Quick adjusting type rear hoop structure of safety helmet

Abstract

The utility model discloses a quick adjusting type rear hoop structure of a safety helmet, and relates to the technical field of safety helmets, the quick adjusting type rear hoop structure of the safety helmet is characterized in that the outer wall of the safety helmet is fixedly connected with a helmet brim, the outer wall of the safety helmet is provided with an adjusting mechanism, and the adjusting mechanism comprises a connecting box. A rubber knob is rotated to drive a connecting column to rotate and drive a gear to rotate, and meanwhile, a plurality of second gears are meshed with the gear, so that the second gears are driven to rotate through rotation of the gear, a second connecting column connected with the second gears is made to rotate, a connecting belt wound around the second connecting column is loosened, and the length of a soft adjusting belt is increased; and a gear rotates to drive a second gear to rotate, so that a second connecting column loosens a wound connecting belt to increase the length of a soft adjusting belt, and the situation that the belt is inconvenient to adapt to different people due to the fact that the length of the adjusted belt is inconvenient to increase is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of safety helmets, in particular to a quick-adjustable rear hoop structure of a safety helmet. Background Art

[0002] A hard hat is a protective device used to prevent the head from being injured by impact objects. It consists of a helmet shell, a hat lining, a lower cheek strap and a back hoop. Existing back hoop is mostly fixed with a buckle, which is unstable during use and easily becomes loose after long-term use. It is also troublesome to remove the buckle for adjustment. Therefore, this paper proposes a quick-adjustable back hoop structure for a hard hat.

[0003] When using existing equipment, it is not easy to adjust the length of the strap, which makes it difficult to adapt to different people. At the same time, because the safety helmet only simply protects parts of the human body, it is not easy to protect parts that are easily injured. Therefore, we propose a quick-adjustable back hoop structure for the safety helmet. Utility Model Content

[0004] The purpose of the utility model is to provide a quick-adjustable rear hoop structure for a safety helmet. Through the adjustment mechanism and the protection mechanism, the problem that the length of the adjustable strap is not easy to increase, which makes it inconvenient to adapt to different people, and the problem that the safety helmet only simply protects parts of the human body, which makes it inconvenient to protect parts that are easily injured, is solved.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The utility model is a quick-adjustable rear hoop structure for a safety helmet, comprising a safety helmet, wherein the outer wall of the safety helmet is fixedly connected to a brim;

[0007] The outer wall of the safety helmet is provided with an adjustment mechanism, and the adjustment mechanism includes a connecting box, the outer wall of the connecting box is rotatably connected to a rubber knob, the outer wall of the rubber knob is fixedly connected to a connecting column, the outer wall of the connecting column is fixedly connected to a gear, the inner wall of the connecting box is rotatably connected to a plurality of second connecting columns, the outer walls of the plurality of second connecting columns are fixedly connected to a second gear, the outer wall of the second gear is meshed with the outer wall of the gear, the outer wall of the second connecting column is rotatably connected to a connecting belt, the outer wall of the connecting belt is fixedly connected to a soft adjustment belt, the outer wall of the soft adjustment belt is slidably connected to the inner wall of the connecting box, and the inner wall of the safety helmet is provided with a protective mechanism.

[0008] Through the above technical solution, the connecting column is driven to rotate by rotating the rubber knob, and the gear connected to the connecting column is driven to rotate, and at the same time the gear is engaged with the second gear, so that the second gear is driven by the gear, and at the same time the second connecting column connected to the second gear rotates, and the connecting belt connected to the second connecting column is loosened while increasing the length of the soft adjustment belt.

[0009] Furthermore, the protection mechanism includes a fixed column, an outer wall of the fixed column is fixedly connected to the outer wall of the connection box, and the outer walls of several fixed columns are rotatably connected to the rear side guard plate.

[0010] Furthermore, an outer wall of the soft adjustment belt is fixedly connected to an external protection block, an outer wall of the external protection block is fixedly connected to a plurality of positioning rings, and an outer wall of the positioning ring is rotatably connected to a connecting block.

[0011] Through the above technical solution, the rear side guard plate is rotated on the fixed column to make the safety helmet fit the back of the head more closely, and the external protection block is clamped on the outer wall of the soft adjustment belt by sliding the connecting block on the outer wall of the positioning ring, so that the external protection block fits the forehead.

[0012] Furthermore, a plurality of fixing plates are fixedly connected to the outer wall of the soft adjustment belt, and a sliding groove is provided on the inner wall of the fixing plate.

[0013] Furthermore, the inner wall of the slide groove is slidably connected with two layers of connecting plates, and the outer wall of the support block is fixedly connected with a positioning block.

[0014] Furthermore, the outer wall of the positioning block is rotatably connected to a connecting rod, and the outer wall of the connecting rod is rotatably connected to a positioning column.

[0015] Furthermore, the outer wall of the positioning column is fixedly connected to the outer wall of the top plate, and the outer wall of the top plate is fixedly connected to the inner wall of the safety helmet.

[0016] Through the above technical solution, the second-layer connecting plate slides through the sliding groove opened on the inner wall of the support block, so that the second-layer connecting plate can better wrap the head, and the connecting rod can rotate around the positioning column and the positioning block respectively, so that the connecting rod is more tightly attached to the top of the head.

[0017] The utility model has the following beneficial effects:

[0018] 1. The utility model is provided with a gear and a second gear. Rotating the rubber knob drives the connecting column to rotate and drives the gear to rotate. At the same time, multiple second gears are engaged with the gear. Therefore, the rotation of the gear drives the multiple second gears to rotate, and the second connecting column connected to the second gear is rotated, thereby loosening the connecting belt wrapped around the second connecting column, thereby increasing the length of the soft adjustment belt. The rotation of the gear drives the rotation of the second gear, thereby loosening the wound connecting belt around the second connecting column to increase the length of the soft adjustment belt, thereby preventing the situation where it is inconvenient to increase the length of the adjustable belt, resulting in inconvenience in adapting to different people.

[0019] 2. The utility model sets a rear side guard plate and an external protection block, rotates the connection block and slides along the positioning ring, so that the external protection block is stuck on the outer wall of the soft adjustment belt, and then the safety helmet is put on the head, and then the rubber knob is rotated in the opposite direction to tighten the connection belt with multiple second connection columns and make the external protection block connected to the outer wall of the soft adjustment belt fit the forehead, and multiple rear side guard plates rotate around multiple fixed columns connected to the outer wall of the connection box, and make the rear side guard plates fit the back of the head, so as to achieve the rotation of the rear side guard plate on the fixed column and the clamping of the external protection block on the soft adjustment belt through the second connection column, thereby preventing the problem that the safety helmet only simply protects the human body parts and is inconvenient to protect the parts that are easily injured.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a cross-sectional view of the overall structure of the utility model;

[0024] Figure 3 This is a cross-sectional view of the protective structure of the utility model;

[0025] Figure 4 This is a cross-sectional view of the adjustment structure of the utility model;

[0026] Figure 5 For this utility model Figure 4 Enlarged view of point A in the middle.

[0027] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0028] 1. Safety helmet; 101. Brim; 2. Adjustment mechanism; 201. Connecting box; 202. Rubber knob; 203. Connecting column; 204. Gear; 205. Second gear; 206. Second connecting column; 207. Soft adjustment strap; 208. Connecting strap; 3. Protection mechanism; 301. External protection block; 302. Positioning ring; 303. Connecting block; 304. Fixing plate; 305. Support block; 306. Second-layer connecting plate; 307. Positioning block; 308. Connecting rod; 309. Positioning column; 310. Top plate; 311. Slide groove; 312. Fixing column; 313. Rear side guard plate. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1-5 As shown, the utility model is a quick-adjustable rear hoop structure for a safety helmet, comprising a safety helmet 1, the outer wall of which is fixedly connected to a brim 101;

[0031] The outer wall of the helmet 1 is provided with an adjustment mechanism 2, which includes a connecting box 201. The outer wall of the connecting box 201 is rotatably connected to a rubber knob 202. The outer wall of the rubber knob 202 is fixedly connected to a connecting column 203. The outer wall of the connecting column 203 is fixedly connected to a gear 204. By rotating the rubber knob 202, the connecting column 203 is driven to rotate, thereby rotating the transmission gear 204. The inner wall of the connecting box 201 is rotatably connected to a plurality of second connecting columns 206. The outer walls of the plurality of second connecting columns 206 are fixedly connected to a second gear 205. The second gear 205 The outer wall is meshed with the outer wall of the gear 204, and the rotation of the gear 204 drives the multiple second gears 205 to rotate, and the outer wall of the second connecting column 206 is loosened with the connecting belt 208 connected thereto. The outer wall of the second connecting column 206 is rotatably connected with the connecting belt 210, and the outer wall of the connecting belt 210 is fixedly connected with the soft adjusting belt 207, which is loosened by the second connecting column 206 through the connecting belt 208, thereby increasing the length of the soft adjusting belt 207. The outer wall of the soft adjusting belt 207 is slidably connected to the inner wall of the connecting box 201, and the inner wall of the safety helmet 1 is provided with a protective mechanism 3.

[0032] By rotating the rubber knob 202, the connecting column 203 connected to the rubber knob 202 is driven to rotate, and the gear 204 connected to the connecting column 203 is driven to rotate, and at the same time, multiple second gears 205 connected to the outer wall of the gear 204 are driven to rotate, thereby driving the second connecting column 206 connected to the outer wall of the second gear 205 to rotate in the connecting box 201, and at the same time loosening the connecting belt 208 connected to the outer wall of the second connecting column 206, thereby increasing the length of the soft adjustment belt 207.

[0033] The protection mechanism 3 includes a fixed column 312, the outer wall of the fixed column 312 is fixedly connected to the outer wall of the connecting box 201, and the outer walls of several fixed columns 312 are rotatably connected to the rear side guard plate 313, and the rear side guard plate 313 is rotated on the outer wall of the fixed column 312, so that the rear side guard plate 313 can quickly fit the back of the human head, and the outer wall of the soft adjustment belt 207 is fixedly connected to the external protection block 301, and the outer wall of the external protection block 301 is fixedly connected to several positioning rings 302, and the outer wall of the positioning ring 302 is rotatably connected to the connecting block 303, and the connecting block 303 slides on the outer wall of the positioning ring 302, so that the external protection block 301 is fixed on the soft adjustment belt 207 to protect the forehead.

[0034] By rotating the rear side guard plate 313 on the fixing column 312, the rear side guard plate 313 fits the back of the head for protection, and an external protection block 301 is connected to the outer wall of the soft adjustment belt 207. Then, the rubber knob 202 is rotated in the opposite direction to rewind the connecting belt 208 and fix the safety helmet 1 on the head. The external protection block 301 is fixed to the soft adjustment belt 207 by sliding along the positioning ring 302 through multiple connecting blocks 303, and the external protection block 301 fits the forehead.

[0035] The outer wall of the soft adjustment strap 207 is fixedly connected to several fixing plates 304, and the inner wall of the fixing plates 304 is provided with a slide groove 311. The inner wall of the slide groove 311 is slidably connected to the second-layer connecting plate 306. The second-layer connecting plate 306 slides in the slide groove 311 provided in the positioning block 307, thereby fitting the second-layer connecting plate 306 to the head. The outer wall of the support block 305 is fixedly connected to the positioning block 307. The outer wall of the positioning block 307 is rotatably connected to the connecting rod 308, and the outer wall of the connecting rod 308 is rotatably connected to the positioning post 309. The connecting rod 308 rotates around the positioning post 309 and the positioning block 307, thereby changing the inclination angle of the connecting rod 308, so that it fits the head more closely. The outer wall of the positioning post 309 is fixedly connected to the outer wall of the top plate 310, and the outer wall of the top plate 310 is fixedly connected to the inner wall of the safety helmet 1.

[0036] When the worker wears the safety helmet 1, the shape of the head changes, and the connecting rod 308 rotates along the positioning column 309 and the positioning block 307, thereby changing the inclination angle of the connecting rod 308, and then the second-layer connecting plate 306 slides along the slide groove 311 opened inside the fixed plate 304, so that the second-layer connecting plate 306 can quickly fit the head.

[0037] A specific application of this embodiment is:

[0038] When the staff needs to use the device, they first turn the rubber knob 202 to drive the connecting column 203 to rotate, and drive the gear 204 to rotate. At the same time, multiple second gears 205 are engaged with the gear 204. Therefore, through the rotation of the gear 204, multiple second gears 205 are driven to rotate, and the second connecting column 206 connected to the second gear 205 is rotated, thereby loosening the connecting belt 208 wound around the second connecting column 206, thereby increasing the length of the soft adjustment belt 207, and putting the external protection block 301 on the soft adjustment belt 207. Then, by rotating the connecting block 303 and sliding along the positioning ring 302, the external protection block 301 is stuck on the outer wall of the soft adjustment belt 207, and then the safety helmet 1 is put on the head. Then, the rubber knob 202 is rotated in the opposite direction, so that the multiple second connecting columns 206 tighten the connecting belt 208 and the soft adjustment belt 207 wraps the head, and at the same time, the external protection block 301 is fitted with the forehead, and the multiple rear side guard plates 313 rotate around the multiple fixed columns 312 connected to the outer wall of the connecting box 201, so that the rear side guard plates 313 are fitted to the back of the head. The top of the head will push the top plate 310 and drive the connecting rod 308 to move through the connected positioning columns 309, and allow the connecting rod 308 to rotate around the outer wall of the positioning block 307, thereby changing the angle of the connecting rod 308 to fit the top of the head, and allow the multiple second-layer connecting plates 306 to slide along the slide groove 311 opened on the inner wall of the support block 305, so that the support block 305 is fitted to the side of the head.

[0039] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0040] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A quick-adjustable rear hoop structure for a safety helmet, comprising a safety helmet (1), characterized in that: The outer wall of the safety helmet (1) is fixedly connected with a brim (101); The outer wall of the safety helmet (1) is provided with an adjustment mechanism (2), the adjustment mechanism (2) comprises a connection box (201), the outer wall of the connection box (201) is rotatably connected to a rubber knob (202), the outer wall of the rubber knob (202) is fixedly connected to a connection column (203), the outer wall of the connection column (203) is fixedly connected to a gear (204), the inner wall of the connection box (201) is rotatably connected to a plurality of second connection columns (206), the plurality of second connection columns (206) are fixedly connected to the outer wall of the rubber knob (202), and the plurality of second connection columns (206) are fixedly connected to the outer wall of the connection column (203). The outer wall of the column (206) is fixedly connected to a second gear (205), the outer wall of the second gear (205) is meshed with the outer wall of the gear (204), the outer wall of the second connecting column (206) is rotatably connected to a connecting belt (210), the outer wall of the connecting belt (210) is fixedly connected to a soft adjustment belt (207), the outer wall of the soft adjustment belt (207) is slidably connected to the inner wall of the connecting box (201), and the inner wall of the safety helmet (1) is provided with a protective mechanism (3).

2. The quick-adjustable rear hoop structure of a safety helmet according to claim 1, characterized in that: The protection mechanism (3) comprises a fixed column (312), the outer wall of the fixed column (312) is fixedly connected to the outer wall of the connection box (201), and the outer walls of several fixed columns (312) are rotatably connected to rear side guard plates (313).

3. The quick-adjustable rear hoop structure of a safety helmet according to claim 2, characterized in that: The outer wall of the soft adjustment belt (207) is fixedly connected to an external protection block (301), the outer wall of the external protection block (301) is fixedly connected to a plurality of positioning rings (302), and the outer wall of the positioning ring (302) is rotatably connected to a connection block (303).

4. The quick-adjustable rear hoop structure of a safety helmet according to claim 3, characterized in that: The outer wall of the soft adjustment belt (207) is fixedly connected to a plurality of fixing plates (304), and the inner wall of the fixing plate (304) is provided with a sliding groove (311).

5. The quick-adjustable rear hoop structure of a safety helmet according to claim 4, characterized in that: The inner wall of the sliding groove (311) is slidably connected to a second layer of connecting plates (306), and the outer wall of the supporting block (305) is fixedly connected to a positioning block (307).

6. The quick-adjustable rear hoop structure of a safety helmet according to claim 5, characterized in that: The outer wall of the positioning block (307) is rotatably connected to a connecting rod (308), and the outer wall of the connecting rod (308) is rotatably connected to a positioning column (309).

7. The quick-adjustable rear hoop structure of a safety helmet according to claim 6, characterized in that: The outer wall of the positioning column (309) is fixedly connected to the outer wall of the top plate (310), and the outer wall of the top plate (310) is fixedly connected to the inner wall of the safety helmet (1).

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