Pressing type tightness adjuster and adjusting type lining of helmet

Abstract

The utility model relates to the field of tightness adjusters of helmets, in particular to a pressing type tightness adjuster of a helmet, which comprises an adjusting rack, a knob cover, a pawl, a button, a bottom shell and an upper cover, a limiting column and a sinking groove are arranged in the center of the inner side of the bottom shell, the upper cover is provided with an upper cavity and a lower cavity through a partition board with a through hole, and limiting teeth matched with the pawl are annularly arranged on the inner wall of the upper cavity. The button is sleeved on the limiting column, a spring is arranged between the button and the limiting column, the knob cover is rotatably buckled on the outer side of the upper cavity, the button comprises a fluted disc section, a multilateral conical table section and an operation section, the pawl is sleeved on the multilateral conical table section through conical surface fit, and the knob cover can rotate together with the pawl and the button; the adjusting rack penetrates through the lower cavity and is meshed with the fluted disc section. The pressing type tightness adjuster is reasonable in structure, the tightness degree of the lining can be effectively adjusted, the lining can reach the size most suitable for the head of a user, and the use experience of the user on the helmet is improved.

Description

Technical Field

[0001] The utility model relates to the field of tightness adjusters for helmets, in particular to a press-type tightness adjuster and an adjustable lining for a helmet. Background Art

[0002] A helmet is a piece of equipment for protecting the head, which mainly includes an outer shell and an inner lining. An ordinary helmet outer shell and inner lining are integrated, and the inner lining is fixed and cannot be adjusted. Therefore, the size of the helmet lining cannot be adjusted according to different users. Although the helmet can be worn, it cannot fit the user's head best, which reduces the user experience of the helmet. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the above-mentioned technology and provide a push-type tightness adjuster and an adjustable liner for a helmet which can be used to adjust the size of the helmet liner.

[0004] A push-type tension adjuster comprises an adjusting rack, a knob cover, a ratchet, a button, a bottom shell and an upper cover fixed relative to the bottom shell;

[0005] A limiting column is provided at the center of the inner side of the bottom shell, and a sink groove is provided around the limiting column;

[0006] The upper cover is divided into an upper cavity away from the bottom shell and a lower cavity close to the bottom shell by a partition, a through hole is provided at the center of the partition, the button is provided in the through hole, and the pawl is provided in the upper cavity;

[0007] The inner wall of the upper cavity is provided with a limiting tooth, and the ratchet pawl cooperates with the limiting tooth;

[0008] The button is sleeved on the limiting column, a spring sleeved on the limiting column is provided on the inner side of the button, and the knob cover is rotatably buckled on the outer side of the upper cavity;

[0009] The button includes a toothed disc section, a polygonal conical platform section and an operating section, the toothed disc section is close to the limiting column, the pawl is sleeved on the polygonal conical platform section through a conical surface, the operating section passes through the knob cover, the knob cover and the pawl are connected through a clamping block and a clamping groove, and the knob cover can rotate together with the pawl and the button;

[0010] The adjusting rack passes through the lower cavity and meshes with the toothed disc segment;

[0011] When the button is pressed, the button moves toward the sink, the spring is compressed, the polygonal conical stage section is separated from the pawl, and the button rotates relative to the knob cover and the pawl.

[0012] Furthermore, an anti-dropping hook is provided at the end of the adjusting rack, and an anti-dropping plate cooperating with the anti-dropping hook is provided at the lower cavity.

[0013] Furthermore, a limiting block is provided in the lower cavity for cooperating with the anti-falling plate to limit the adjusting rack.

[0014] Furthermore, a snap ring is provided on the inner side of the knob cover, and a snap edge cooperating with the snap ring is provided on the outer wall of the upper cover located in the upper cavity.

[0015] An adjustable lining for a helmet comprises the aforementioned push-type tension adjuster, wherein the bottom shell is connected to a lining frame, the end of the lining frame away from the bottom shell is provided with a first connecting piece for connecting the lining frame to the inner wall of the helmet, and the end of the adjusting rack away from the bottom shell is provided with a second connecting piece connected to the inner wall of the helmet.

[0016] Advantages of the utility model: The push-type tightness adjuster of the utility model has a reasonable structure and can effectively adjust the tightness of the lining so that the lining can reach the size that best fits the user's head, thereby increasing the user's experience of the helmet;

[0017] When the push-type tension adjuster is not pressed, the rack cloth is adjusted to move back, ensuring the stability of the adjusted size;

[0018] One-touch unlocking allows quick release of the adjuster, making it more user-friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an exploded schematic diagram of a push-type tightness adjuster for a helmet of the utility model;

[0020] Figure 2 It is a schematic diagram of a knob cover of a push-type tightness adjuster of a helmet according to the utility model;

[0021] Figure 3 It is a schematic diagram of a ratchet of a push-type tightness adjuster of a helmet according to the utility model;

[0022] Figure 4 It is a schematic diagram of a button of a push-type tightness adjuster of a helmet according to the utility model;

[0023] Figure 5 It is a schematic diagram of an upper cover of a push-type tightness adjuster of a helmet according to the utility model;

[0024] Figure 6 It is a cross-sectional schematic diagram of a push-type tightness adjuster for a helmet according to the utility model;

[0025] Figure 7 It is a schematic diagram of the cooperation between the ratchet and the limiting tooth of a push-type tightness adjuster of a helmet of the utility model;

[0026] Figure 8 It is a schematic diagram of the cooperation between the adjusting rack and the toothed disc section of a push-type tightness adjuster of a helmet of the utility model;

[0027] Fig. 9 The utility model is a schematic diagram of an adjustable inner lining of a helmet.

[0028] As shown in the figure: 1. Adjustment rack; 2. Knob cover; 3. Ratchet; 4. Push button; 5. Limiting tooth; 6. Bottom shell; 7. Upper cover; 8. Limiting column; 9. Sink; 10. Partition; 11. Through hole; 12. Spring; 13. Block; 14. Slot; 15. Anti-falling hook; 16. Anti-falling plate; 17. Limiting block; 18. Snap ring; 19. Card edge; 20. Liner frame; 21. First connecting piece; 22. Second connecting piece; 401. Toothed disc section; 402. Polygonal conical table section; 403. Operating section; 701. Upper cavity; 702. Lower cavity. DETAILED DESCRIPTION

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] In the description of the embodiments of the present utility model, if a feature is referred to as being "set", "fixed", "connected" or "installed" on another feature, it may be directly set, fixed, connected to another feature, or indirectly set, fixed, connected, or installed on another feature.

[0032] In the description of the embodiments of the present utility model, if "several" is involved, it means more than one, if "multiple" is involved, it means more than two, if "greater than", "less than" or "exceed" is involved, it should be understood as not including the number itself, if "above", "below" or "within" is involved, it should be understood as including the number itself. If "first" or "second" is involved, it should be understood as being used to distinguish technical features, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0033] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0034] Example 1

[0035] A push-type tightness adjuster for a helmet, comprising an adjusting rack 1, a knob cover 2, a ratchet 3, a button 4, a bottom shell 6 and an upper cover 7 fixed relative to the bottom shell 6;

[0036] A limiting column 8 is provided at the inner center of the bottom shell 6, and a sink groove 9 is provided around the limiting column 8;

[0037] The upper cover 7 is divided into an upper cavity 701 away from the bottom shell 6 and a lower cavity 702 close to the bottom shell 6 by a partition 10. A through hole 11 is provided at the center of the partition 10. The button 4 is provided in the through hole 11. The pawl 3 is provided in the upper cavity 701. The knob cover 2 is rotatably buckled on the outer side of the upper cavity 701.

[0038] The inner wall of the upper cavity 701 is provided with a limiting tooth 5, and the ratchet 3 cooperates with the limiting tooth 5;

[0039] The button 4 is sleeved on the limiting column 8, and a spring 12 sleeved on the limiting column 8 is provided on the inner side of the button 4;

[0040] The button 4 includes a toothed disc section 401, a polygonal conical platform section 402 and an operating section 403, wherein the toothed disc section 401 is close to the limiting column 8, the pawl 3 is sleeved on the polygonal conical platform section 402 through a conical surface, and the operating section 403 passes through the knob cover 2;

[0041] The knob cover 2 and the pawl 3 are connected by a clamping block 13 and a clamping slot 14, so that the knob cover 2 can rotate together with the pawl 3 and the button 4;

[0042] The adjusting rack 1 passes through the lower cavity 702 and meshes with the toothed disc segment 401;

[0043] When the button 4 is pressed, the button 4 moves toward the sink 9, the spring 12 is compressed, the polygonal conical stage 402 is separated from the pawl 3, and the button 4 rotates relative to the knob cover 2 and the pawl 3.

[0044] The end of the adjusting rack 1 is provided with an anti-dropping hook 15, and the lower cavity 702 is provided with an anti-dropping plate 16 cooperating with the anti-dropping hook 15. The anti-dropping hook 15 can be hung on one end of the anti-dropping plate 16 to effectively prevent the adjusting rack 1 from falling off.

[0045] The lower cavity 702 is also provided with a limiting block 17 that cooperates with the anti-falling plate 16 to limit the position of the adjusting rack 1, so as to limit the position of the adjusting rack 1.

[0046] A snap ring 18 is provided on the inner side of the knob cover 2 , and a clamping edge 19 cooperating with the snap ring 18 is provided on the outer wall of the upper cover 7 located at the upper cavity 701 , so that the knob cover 2 can be rotatably buckled on the outer side of the upper cavity 701 .

[0047] When the utility model is in use, it can be divided into two forms: tightening and loosening:

[0048] When tightening, the button 4 is not operated, the pawl 3 can only move in one direction, and the knob cover 2 is rotated to rotate the knob cover 2 in the direction in which the pawl 3 can rotate, such as Figure 7 As shown, the pawl 3 rotates in the clockwise direction, and the button 4 is driven to rotate by cooperating with the polygonal conical stage section 402 of the button 4, so that the toothed disc section 401 of the button 4 rotates, and the two adjusting racks 1 meshed with the toothed disc section 401 move toward the approaching direction, thereby achieving tightening, which is also a size contraction;

[0049] When relaxing, do not operate the knob cover 2, press the button 4, the button 4 moves to the sink 9, the spring 12 is compressed, the polygonal conical stage 402 disengages from the pawl 3, and the rotation of the button 4 is not restricted by the pawl 3. At this time, the adjustment rack 1 can be moved outward to achieve relaxation, and the size is also enlarged to achieve push-type one-button unlocking.

[0050] Example 2

[0051] like Figure 8 As shown, an adjustable lining of a helmet includes the push-type tightness adjuster of the helmet described in Example 1, the bottom shell 6 is connected to a lining frame 20, the end of the lining frame 20 away from the bottom shell 6 is provided with a first connecting piece 21 for connecting the lining frame 20 to the inner wall of the helmet, the end of the adjusting rack 1 away from the bottom shell 6 is provided with a second connecting piece 22 connected to the inner wall of the helmet, the adjustable lining can be set on the rear side of the inside of the helmet when used, the first connecting piece 21 at the top of the inner frame 20 is connected to the top of the helmet, the second connecting piece 22 at the end of the adjusting rack 1 is connected to the inner side of the helmet, and in addition, the bottom shell 6 and the upper cover 7 can be designed in shape and size according to the requirements of the lining.

[0052] The push-type tension adjuster of the utility model is also highly expansible, and can be used not only for adjusting the tension of helmet linings, but also for adjusting binding ties, adjusting the tension of shoelaces, etc., and is worthy of promotion.

[0053] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A push-type tightness adjuster for a helmet, characterized in that: It comprises an adjusting rack (1), a knob cover (2), a ratchet (3), a button (4), a bottom shell (6), and an upper cover (7) fixed relative to the bottom shell (6); A limiting column (8) is provided at the inner center of the bottom shell (6), and a sink groove (9) is provided around the limiting column (8); The upper cover (7) is divided into an upper chamber (701) away from the bottom shell (6) and a lower chamber (702) close to the bottom shell (6) by a partition (10); a through hole (11) is provided at the center of the partition (10); the button (4) is provided in the through hole (11); the pawl (3) is provided in the upper chamber (701); and the knob cover (2) is rotatably buckled on the outside of the upper chamber (701); The inner wall of the upper cavity (701) is provided with a limiting tooth (5), and the ratchet pawl (3) cooperates with the limiting tooth (5); The button (4) is sleeved on the limiting column (8), and a spring (12) sleeved on the limiting column (8) is provided on the inner side of the button (4); The button (4) comprises a toothed disc section (401), a polygonal conical platform section (402) and an operating section (403); the toothed disc section (401) is close to the limiting column (8); the pawl (3) is sleeved on the polygonal conical platform section (402) through a conical surface; and the operating section (403) passes through the knob cover (2); The knob cover (2) and the ratchet (3) are butted against each other via a clamping block (13) and a clamping groove (14), and the knob cover (2) can rotate together with the ratchet (3) and the button (4); The adjusting rack (1) passes through the lower cavity (702) and meshes with the toothed disc segment (401); When the button (4) is pressed, the button (4) moves toward the sink (9), the spring (12) is compressed, the polygonal conical stage (402) is separated from the pawl (3), and the button (4) is rotated relative to the knob cover (2) and the pawl (3).

2. A push-type tightness adjuster for a helmet according to claim 1, characterized in that: An anti-drop hook (15) is provided at the end of the adjusting rack (1), and an anti-drop plate (16) cooperating with the anti-drop hook (15) is provided in the lower cavity (702).

3. A push-type tightness adjuster for a helmet according to claim 2, characterized in that: The lower cavity (702) is also provided with a limiting block (17) for cooperating with the anti-falling plate (16) to limit the position of the adjusting rack (1).

4. The push-type tightness adjuster for a helmet according to claim 1, characterized in that: A snap ring (18) is provided on the inner side of the knob cover (2), and a snap edge (19) matching with the snap ring (18) is provided on the outer wall of the upper cover (7) located in the upper cavity (701).

5. An adjustable liner for a helmet, characterized in that: It comprises the push-type tension adjuster according to any one of claims 1 to 4, wherein the bottom shell (6) is connected to an inner lining frame (20), and the inner lining frame (20) is provided with a first connecting piece (21) for connecting the inner lining frame (20) to the inner wall of the helmet at one end away from the bottom shell (6), and the adjusting rack (1) is provided with a second connecting piece (22) connected to the inner wall of the helmet at one end away from the bottom shell (6).

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