Safety helmet tightening structure convenient to adjust

Abstract

The utility model discloses a safety helmet tightening structure convenient to adjust, and belongs to the field of safety helmet tightening structures, the safety helmet tightening structure convenient to adjust comprises a mounting bracket arranged in a safety helmet, two connecting mechanisms are symmetrically arranged between the mounting bracket and the safety helmet, and a fixing frame, a supporting rod, a third spring, a sliding frame, a first fixing block and a second fixing block are arranged; the size of the mounting bracket is adjusted by pulling the tightening belt, the sliding frame is limited by the fixed frame, the sliding frame is supported by the third spring, the tightening belt is supported by the sliding frame, and a second fixed block on the surface of the tightening belt abuts against a first fixed block in the fixed frame to limit the tightening belt. And then the supporting rod is pressed to enable the sliding frame to move in the fixing frame to relieve supporting on the tightening belt, and then the tightening belt is pulled to adjust the size of the mounting bracket, so that the problems that a knob needs to be rotated when tightening adjustment is performed on a traditional safety helmet, but the size of the knob is large are solved, and the practicability is improved.

Description

Technical Field

[0001] This application relates to the technical field of safety helmet tightening structures, and particularly to a safety helmet tightening structure that is convenient to adjust. Background Art

[0002] A safety helmet refers to a hat that protects the human head from injuries caused by falling objects and other specific factors. A safety helmet consists of a hat shell, a hat liner, a chin strap, and accessories, etc.

[0003] Currently, when adjusting the tightening of traditional safety helmets, a knob needs to be rotated. However, the knob is relatively large in size, which affects the internal structure and safety of the safety helmet. Summary of the Utility Model

[0004] In view of the deficiencies of the prior art, the present utility model provides a safety helmet tightening structure that is convenient to adjust, overcomes the deficiencies of the prior art, and aims to solve the problems in the background art.

[0005] To achieve the above object, this application adopts the following technical solution: A safety helmet tightening structure that is convenient to adjust, including a mounting bracket arranged inside the safety helmet. Two connecting mechanisms are symmetrically arranged between the mounting bracket and the safety helmet. One side of the mounting bracket is fixedly connected with a tightening belt. A limiting mechanism is arranged on the side of the mounting bracket away from the tightening belt. The limiting mechanism includes a fixed frame fixedly connected with the mounting bracket. A sliding frame is slidably connected inside the fixed frame. The top of the sliding frame is fixedly connected with a support rod. A third spring is fixedly connected to the outside of the support rod. A second fixing block is fixedly connected to the surface of the tightening belt. A first fixing block is fixedly connected to one side of the fixed frame close to the second fixing block. An elastic binding belt is fixedly connected to the top of the mounting bracket. A baffle is fixedly connected to the top of the elastic binding belt. A buffer mechanism is arranged between the baffle and the safety helmet.

[0006] As a preferred embodiment, the connecting mechanism includes an insertion block fixedly connected with the mounting bracket. A second spring is fixedly connected inside the insertion block. One side of the second spring is fixedly connected with a limiting block that is slidably connected with the insertion block.

[0007] By adopting the above technical solution, the mounting bracket and the safety helmet are connected by inserting the insertion block into the inside of the safety helmet. Then, the second spring supports the limiting block, and the limiting block limits the insertion block, so as to better connect the mounting bracket and the safety helmet.

[0008] As a preferred embodiment, a chute is opened inside the fixed frame, and the chute is adapted to the sliding frame.

[0009] By adopting the above technical solution, a slide groove is opened inside the fixed frame, the slide groove is matched with the sliding frame, and the sliding frame is limited by the slide groove, so that the sliding frame can be better moved inside the fixed frame.

[0010] As a preferred embodiment, the buffer mechanism includes a first magnet, which is fixedly connected to the baffle, a second magnet is provided on the top of the first magnet, the second magnet is fixedly connected to the mounting bracket, a first spring is provided between the second magnet and the first magnet, the two ends of the first spring are respectively fixedly connected to the baffle and the mounting bracket, and the relative surface poles of the first magnet and the second magnet repel each other.

[0011] By adopting the above technical solution, the impact force on the safety helmet is buffered by the first spring, and the relative surface magnetic poles of the first magnet and the second magnet repel each other, further buffering the impact force on the safety helmet, which can better buffer the impact force on the safety helmet.

[0012] As a preferred implementation, a limit slot is fixedly connected to the surface of the mounting bracket, and the limit slot is adapted to the tightening belt.

[0013] By adopting the above technical solution, the limiting slot is fixedly connected to the surface of the mounting bracket, and the limiting slot is adapted to the tightening belt, so that the tightening belt can be better limited.

[0014] As a preferred embodiment, a plurality of air holes are opened on the surface of the safety helmet, and the plurality of air holes are evenly distributed on the surface of the safety helmet.

[0015] By adopting the above technical solution, a plurality of air holes are opened on the surface of the safety helmet, and the plurality of air holes are evenly distributed on the surface of the safety helmet. The air permeability inside the safety helmet is then enhanced by the air holes, so that the air permeability inside the safety helmet can be better enhanced.

[0016] As a preferred implementation, a receiving groove is provided on the surface of the insert block, and the receiving groove is matched with the limiting block.

[0017] By adopting the above technical solution, a receiving groove is opened on the surface of the insertion block, and the receiving groove is adapted to the limit block. The limit block is then pressed to allow the limit block to enter the interior of the receiving groove, and the insertion block is then pulled to allow the insertion block to be detached from the interior of the safety helmet to disassemble the mounting bracket, thereby making it easier to disassemble the mounting bracket.

[0018] As a preferred implementation, a rubber pad is fixedly connected inside the mounting bracket.

[0019] By adopting the above technical solution, a rubber soft pad is fixedly connected inside the mounting bracket, and the rubber soft pad enhances the comfort of the user during use, which can better enhance the comfort of the user during use.

[0020] Advantages of the present application:

[0021] 1. For the easily adjustable tightening structure of the safety helmet, by setting a fixing frame, a support rod, a third spring, a sliding frame, a first fixing block and a second fixing block, the size of the mounting bracket is adjusted by pulling the tightening belt. Then, the fixing frame limits the sliding frame, the third spring supports the sliding frame, the sliding frame supports the tightening belt, the second fixing block on the surface of the tightening belt abuts against the first fixing block inside the fixing frame to limit the tightening belt, and then by pressing the support rod, the sliding frame moves inside the fixing frame to release the support for the tightening belt, and then the size of the mounting bracket is adjusted by pulling the tightening belt, avoiding the problem that when adjusting the tightening of the traditional safety helmet, it is necessary to rotate a knob, but the knob has a large volume, and improving the practicality.

[0022] 2. For the easily adjustable tightening structure of the safety helmet, by setting an insertion block, a second spring and a limiting block, the mounting bracket and the safety helmet are connected by inserting the insertion block into the safety helmet. Then, the second spring supports the limiting block, and the limiting block limits the insertion block, avoiding the problem that the traditional safety helmet cannot quickly disassemble the mounting bracket, and improving the practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a front structural schematic diagram of the present application;

[0024] Figure 2 is a bottom structural schematic diagram of the present application;

[0025] Figure 3 is a front structural sectional view of the present application;

[0026] Figure 4 is of the present application Figure 2 enlarged schematic diagram of the structure at A.

[0027] Reference numerals in the figures: 1, mounting bracket; 2, safety helmet; 3, buffer mechanism; 31, first magnet; 32, first spring; 33, second magnet; 4, connecting mechanism; 41, insertion block; 42, second spring; 43, limiting block; 5, limiting mechanism; 51, fixing frame; 52, support rod; 53, third spring; 54, sliding frame; 55, first fixing block; 56, second fixing block; 6, ventilation hole; 7, sliding groove; 8, tightening belt; 9, limiting card slot; 10, elastic binding belt; 11, baffle; 12, receiving groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0029] Refer to Figures 1 - 3 , a tightening structure for a safety helmet that is easy to adjust, including an installation bracket 1 provided inside the safety helmet 2. Two connecting mechanisms 4 are symmetrically provided between the installation bracket 1 and the safety helmet 2. The connecting mechanism 4 includes an insertion block 41, the insertion block 41 is fixedly connected to the installation bracket 1, a second spring 42 is fixedly connected inside the insertion block 41, a limiting block 43 is fixedly connected to one side of the second spring 42, and the limiting block 43 is slidably connected to the insertion block 41; by inserting the insertion block 41 into the inside of the safety helmet 2 to connect the installation bracket 1 and the safety helmet 2, then the second spring 42 supports the limiting block 43, and then the limiting block 43 limits the insertion block 41, which can better connect the installation bracket 1 and the safety helmet 2.

[0030] Refer to Figures 2 - 4 , a tightening belt 8 is fixedly connected to one side of the installation bracket 1, and a limiting mechanism 5 is provided on the side of the installation bracket 1 away from the tightening belt 8. The limiting mechanism 5 includes a fixed frame 51, the fixed frame 51 is fixedly connected to the installation bracket 1, a sliding frame 54 is slidably connected inside the fixed frame 51, a support rod 52 is fixedly connected to the top of the sliding frame 54, a third spring 53 is fixedly connected to the outside of the support rod 52, a second fixing block 56 is fixedly connected to the surface of the tightening belt 8, a first fixing block 55 is fixedly connected to one side of the fixed frame 51 close to the second fixing block 56, and an elastic binding band 10 is fixedly connected to the top of the installation bracket 1. A chute 7 is opened inside the fixed frame 51, and the chute 7 is adapted to the sliding frame 54; by opening the chute 7 inside the fixed frame 51, the chute 7 is adapted to the sliding frame 54, and then the chute 7 limits the sliding frame 54, which can better make the sliding frame 54 move inside the fixed frame 51.

[0031] Refer to Figure 3A baffle 11 is fixedly connected to the top of the elastic band 10, and a buffer mechanism 3 is provided between the baffle 11 and the safety helmet 2. The buffer mechanism 3 includes a first magnet 31, the first magnet 31 is fixedly connected to the baffle 11, a second magnet 33 is provided on the top of the first magnet 31, the second magnet 33 is fixedly connected to the mounting bracket 1, a first spring 32 is provided between the second magnet 33 and the first magnet 31, and the two ends of the first spring 32 are respectively fixedly connected to the baffle 11 and the mounting bracket 1, and the relative surface poles of the first magnet 31 and the second magnet 33 repel each other; the impact force exerted on the safety helmet 2 is buffered by the first spring 32, and then the relative surface poles of the first magnet 31 and the second magnet 33 repel each other, so as to further buffer the impact force exerted on the safety helmet 2, so as to better buffer the impact force exerted on the safety helmet 2.

[0032] Reference Figures 1 - 3 The surface of the mounting bracket 1 is fixedly connected with a limiting slot 9, and the limiting slot 9 is adapted to the tightening belt 8; by fixing the surface of the mounting bracket 1 with the limiting slot 9, and the limiting slot 9 is adapted to the tightening belt 8, the tightening belt 8 can be better limited.

[0033] Reference Figures 1 - 3 A plurality of ventilation holes 6 are provided on the surface of the safety helmet 2, and the plurality of ventilation holes 6 are evenly distributed on the surface of the safety helmet 2; a plurality of ventilation holes 6 are provided on the surface of the safety helmet 2, and the plurality of ventilation holes 6 are evenly distributed on the surface of the safety helmet 2, and the ventilation holes 6 enhance the air permeability inside the safety helmet 2, which can better enhance the air permeability inside the safety helmet 2.

[0034] Reference Figures 2 - 3 The surface of the insertion block 41 is provided with a receiving groove 12, and the receiving groove 12 is adapted to the limit block 43; the surface of the insertion block 41 is provided with a receiving groove 12, and the receiving groove 12 is adapted to the limit block 43, and then the limit block 43 is pressed to make the limit block 43 enter the interior of the receiving groove 12, and then the insertion block 41 is pulled to make the insertion block 41 detach from the interior of the safety helmet 2 to disassemble the mounting bracket 1, so that the mounting bracket 1 can be disassembled better.

[0035] Reference Figures 1 - 3 The mounting bracket 1 is internally fixedly connected with a rubber pad; the mounting bracket 1 is internally fixedly connected with a rubber pad, and the rubber pad enhances the comfort of the user when using it, which can better enhance the comfort of the user when using it.

[0036] Working principle: The size of the mounting bracket 1 is adjusted by pulling the tightening belt 8, and then the sliding frame 54 is limited by the fixed frame 51, and then the sliding frame 54 is supported by the third spring 53, and then the tightening belt 8 is supported by the sliding frame 54, and then the second fixed block 56 on the surface of the tightening belt 8 and the first fixed block 55 inside the fixed frame 51 are in conflict to limit the tightening belt 8, and then the support rod 52 is pressed to make the sliding frame 54 move inside the fixed frame 51 to release the support for the tightening belt 8, and then the tightening belt 8 is pulled to move the tightening belt 8 inside the fixed frame 51, and then the insertion block 41 is inserted into the interior of the safety helmet 2 to connect the mounting bracket 1 and the safety helmet 2. Then, the second spring 42 supports the limit block 43, and the limit block 43 limits the insertion block 41, so as to better connect the mounting bracket 1 and the safety helmet 2. A receiving groove 12 is provided on the surface of the insertion block 41, and the receiving groove 12 is matched with the limit block 43. The limit block 43 is pressed to make the limit block 43 enter the interior of the receiving groove 12, and the insertion block 41 is pulled to make the insertion block 41 detach from the interior of the safety helmet 2 to disassemble the mounting bracket 1. The first spring 32 buffers the impact force on the safety helmet 2, and the relative surface magnetic poles of the first magnet 31 and the second magnet 33 repel each other, so as to further buffer the impact force on the safety helmet 2.

[0037] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed in the present application according to the technical solution and utility model concept of the present application, which should be covered by the protection scope of the present application.

Claims

1. A helmet tightening structure that is easy to adjust, comprising a mounting bracket (1) disposed inside a helmet (2), characterized in that: Two connecting mechanisms (4) are symmetrically arranged between the mounting bracket (1) and the safety helmet (2); a tightening belt (8) is fixedly connected to one side of the mounting bracket (1); a limiting mechanism (5) is arranged on a side of the mounting bracket (1) away from the tightening belt (8); the limiting mechanism (5) comprises a fixing frame (51); the fixing frame (51) is fixedly connected to the mounting bracket (1); a sliding frame (54) is slidably connected to the interior of the fixing frame (51); and a support rod (54) is fixedly connected to the top of the sliding frame (54). 52), the outside of the support rod (52) is fixedly connected to a third spring (53), the surface of the tightening belt (8) is fixedly connected to a second fixing block (56), the inside of the fixing frame (51) is fixedly connected to a first fixing block (55) on a side close to the second fixing block (56), the top of the mounting bracket (1) is fixedly connected to an elastic band (10), the top of the elastic band (10) is fixedly connected to a baffle (11), and a buffer mechanism (3) is provided between the baffle (11) and the safety helmet (2).

2. The adjustable helmet tightening structure according to claim 1, characterized in that: The connection mechanism (4) comprises an insertion block (41), the insertion block (41) being fixedly connected to the mounting bracket (1), a second spring (42) being fixedly connected inside the insertion block (41), a limiting block (43) being fixedly connected to one side of the second spring (42), and the limiting block (43) being slidably connected to the insertion block (41).

3. The adjustable helmet tightening structure according to claim 1, characterized in that: A slide groove (7) is provided inside the fixed frame (51), and the slide groove (7) is adapted to fit the sliding frame (54).

4. The adjustable helmet tightening structure according to claim 1, characterized in that: The buffer mechanism (3) comprises a first magnet (31), the first magnet (31) being fixedly connected to the baffle (11), a second magnet (33) being provided on the top of the first magnet (31), the second magnet (33) being fixedly connected to the mounting bracket (1), a first spring (32) being provided between the second magnet (33) and the first magnet (31), two ends of the first spring (32) being fixedly connected to the baffle (11) and the mounting bracket (1), respectively, and the opposite surface magnetic poles of the first magnet (31) and the second magnet (33) repel each other.

5. The adjustable helmet tightening structure according to claim 1, characterized in that: A limit slot (9) is fixedly connected to the surface of the mounting bracket (1), and the limit slot (9) is compatible with the tightening belt (8).

6. The adjustable helmet tightening structure according to claim 1, characterized in that: A plurality of air holes (6) are provided on the surface of the safety helmet (2), and the plurality of air holes (6) are evenly distributed on the surface of the safety helmet (2).

7. The easily adjustable helmet tightening structure according to claim 2, characterized in that: A receiving groove (12) is provided on the surface of the insertion block (41), and the receiving groove (12) is adapted to fit the limiting block (43).

8. The adjustable helmet tightening structure according to claim 1, characterized in that: A rubber cushion is fixedly connected inside the mounting bracket (1).

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