Visor mounting device for a helmet

Abstract

Visor mounting device for a helmet, comprising: a helmet shell which has an opening at the front and recesses on both the left and right sides; and two visor mounting structures arranged on the left and right sides of the helmet shell, comprising: two covers arranged within the recesses of the helmet shell, each of the covers being provided with a through-hole, an elastic element arranged below the through-hole, a rack arranged on one side of each cover, and the rack having elastic extensibility; two sliding blocks arranged below the covers, which rest against the elastic elements, and a first recess and a second recess provided at an upper end of each of the sliding blocks; two rotary control elements arranged in the through-holes of the covers, each rotary control element having at one end an actuating part, in one middle a rotary shaft, on one side of the rotary shaft a projection part, the projection part being engaged with the first recess and the second recess of the sliding blocks, and a rotary knob at one end of the rotary shaft; a visor arranged at a front end of the opening of the helmet shell and joined with the rotary control elements for positioning, wherein the projecting rods are arranged on the inner sides of the left and right ends of the visor and the projecting rods are in contact with the racks of the covers; and Two control knobs are located on the inside of the left and right ends of the visor and engage for positioning.

Description

BACKGROUND OF THE INVENTION

[0001] The present invention relates to a visor fastening device for a helmet and in particular a device that enables quick assembly and disassembly, provides segmented positioning and improves wear resistance and stability. DESCRIPTION OF THE RELATED STATE OF THE ART

[0002] Accordingly, the conventional fastening structure for a helmet visor consists of using a single shaft center in conjunction with fastening toothed or friction elements, allowing the visor to pivot to both sides of the helmet shell. Mounting and dismounting the visor typically requires the use of tools or the removal of screws, which is cumbersome and results in high friction. Furthermore, with a conventional visor, the gap between the visor and the helmet shell is typically fixed when open, and if an anti-fog insert is also attached to the inside of the visor, the anti-fog insert can easily rub against the helmet shell or other components, causing scratches or abnormal noises and thus negatively impacting the user experience and the lifespan of the visor, as described in the prior art according to Taiwan Patent No. I646909.Furthermore, Taiwan patent no. I714972 discloses a structure that allows for quick assembly and disassembly, but does not disclose a segmented positioning function, so wear resistance and stability still require further improvement. SUMMARY OF THE INVENTION

[0003] A main objective of the present invention is to provide a visor fastening device for a helmet that allows for quick assembly and disassembly as well as segmented positioning, thereby achieving the effect of convenient use.

[0004] Another main objective of the present invention is to provide a visor fastening device for a helmet which is able to improve wear resistance and stability and thereby extend the service life of the device.

[0005] To achieve the aforementioned objectives, the present invention comprises a helmet shell having an opening at its front, and two recesses each on the left and right sides of the helmet shell; two visor mounting structures are provided on the left and right sides of the helmet shell, comprising two covers arranged in the recesses of the helmet shell, each cover having a through-hole and an elastic element arranged below the through-hole, as well as a rack with elastic extensibility arranged on one side of the cover; two sliding blocks are arranged on one side of the cover and are provided with a first recess and a second recess;Two rotary control elements are arranged in the through-holes of the covers, each rotary control element having a rotating shaft, a projecting part arranged on one side of the rotating shaft, and a rotary knob arranged at one end thereof; a visor is arranged at a front end of the opening of the helmet shell, with two projecting rods arranged on the inside of each of the left and right ends, and the projecting rods are in contact with the racks of the covers; and two control knobs are arranged on the inside of the two ends of the visor, thereby achieving the effect of quick assembly and disassembly as well as segmented positioning.

[0006] According to the aforementioned visor fastening device for a helmet, the shape of the rack of the cover is arc-shaped, and an upper limiting groove and a lower limiting groove are provided at the upper and lower ends, respectively.

[0007] According to the aforementioned visor mounting device for a helmet, the material of the rotary control element is metal.

[0008] To better understand the technical means for achieving the aforementioned purpose and the effect of the present invention, detailed descriptions are given below with reference to the following exemplary embodiment. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 is a side view showing a visor in a closed state according to the present invention. Fig. Figure 2 is an exploded view of the present invention. Fig. Figure 3 is an enlarged schematic view of the cover structure of the present invention. Fig. Figure 4 is an enlarged perspective view of a rotary control element of the present invention. Fig. Figure 5 is an enlarged schematic side view of the rotary control element of the present invention. Fig. Figure 6 is a partially enlarged schematic view of the sight of the present invention. Fig. Figure 7 is an enlarged schematic view of a control knob of the present invention. Fig. Figure 8 is an enlarged composite schematic view of the visor in the closed state according to the present invention. Fig. Figure 9 is a schematic cross-sectional view showing the visor, the cover and the control knob when the cover is in the closed state according to the present invention. Fig. Figure 10 is a schematic view showing the relative position between the cover and the rotary control element when the visor is in the closed state according to the present invention. Fig. Figure 11 is a schematic view showing the relative position between the rotary control element and the sliding block when the visor is in the closed state according to the present invention. Fig. Figure 12 is a side view showing the visor in a flipped-up position according to the present invention. Fig. Figure 13 is an enlarged composite schematic view showing the visor in the flipped-up position according to the present invention. Fig. Figure 14 is a schematic view showing the relative position between the cover and the rotary control element when the visor is in the flipped-up state according to the present invention. Fig. Figure 15 is a schematic view showing the relative position between the rotary control element and the sliding block when the visor is in the flipped-up state according to the present invention. Fig. Figure 16 is an enlarged schematic view showing a process for removing the visor according to the present invention. DETAILED DESCRIPTION OF FORMATIONS OF THE INVENTION

[0009] With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10 to Fig. The visor fastening device for a helmet of the present invention comprises a helmet shell 1 having an opening 11 on a front side and recesses 12 on its left and right sides, respectively, and two visor fastening structures 20 being provided at the left and right ends of the helmet shell 1. The mechanisms on the left and right sides are symmetrical, and the following description is based on only one side. The visor fastening structure 20 comprises a cover 2 arranged within the recess 12, which is secured by a plurality of fastening elements, such as three rivets or screws, wherein an oval through-hole 21 is provided near the center of the cover 2, at a lower end of the through-hole 21.a notch 22 and a straight groove 23 are provided below the through-hole 21, guide slots 24 are provided on both sides of the straight groove 23, a rack 25 is provided on an outside of the cover 2, which lies on an outside of the through-hole 21, an upper limiting groove 26 and a lower limiting groove 27 are provided at the upper and lower ends of the rack 25, the rack 25 is arcuate and a corresponding arcuate open groove is provided behind the rack 25, giving the rack 25 elastic elongation, and an elastic element 28, such as a spring, is arranged inside the straight groove 23 of the cover.

[0010] Below the through holes 21 of the covers and above the guide slots 24, two sliding blocks 3 are arranged to press against the elastic elements 28, whereby the sliding blocks 3 have elastic sliding blocks that can slide vertically and extend, and at the upper ends of the sliding blocks 3 a first recess 31 and a second recess 32 are provided.

[0011] Two rotary control elements 4 are I-shaped and made of wear-resistant and corrosion-resistant metal materials, such as zinc alloy, aluminum alloy, or titanium alloy. Each rotary control element 4 is arranged in the through-hole 21 of the cover. An actuating element 41 is arranged at one end of the rotary control element 4, and a rotary shaft 42 is arranged in its center. One side of the rotary shaft 42 is provided with a projecting part 43, which engages with the first and second recesses 31, 32 of the sliding block, respectively. A distal end of the rotary shaft 42 is flattened and provided with a long rotary knob 44.

[0012] A visor 5 is convexly curved and arranged at the front end of the opening 11 of the helmet shell. A projection rod 51 and a projection wall 52 are each provided within the left and right ends of the visor 5, and a longitudinal groove 53 is provided within the projection wall 52, wherein the projection rod 51 is able to engage with the rack 25 of the cover, the longitudinal groove 53 is in plug-in connection with the rotary knob 44 of the cover for positioning, and an actuating element 54 is arranged projecting from the lower end outside the visor 5.

[0013] Two control knobs 6 are arranged at the left and right ends inside the visor 5 and are plug-in connected to the visor 5 for positioning. Each control knob 6 is provided with a round frame 61 and a handle 62. The round frame 61 is plug-in connected to the projecting wall 52 of the visor 5, and two detent blocks 63 are provided at the two corresponding ends of the inner sides of the round frame 61. The detent blocks 63 are arranged such that they engage below the two ends of the rotary knob 44 of the rotary control element. The handle 62 rests against the inner side of the visor 5, and a distal end of it projects beyond the lower end of the visor 5, allowing an external force to be applied for pushing or folding.

[0014] According to the structural combination described above, the cover 2 is fixed within the recess 12 of the helmet shell, the sliding block 3 and the elastic element 28 are arranged below the through-hole 21 of the cover, the rotary control element 4 is arranged within the through-hole 21 of the cover, and its rotary knob 44 is in a plug-in connection with the elongated groove 53 of the visor. The projection rod 51 of the visor is in contact with the rack 25 of the cover, the control knob 6 is adapted via the round frame 61 around the projection wall 52 of the visor, whereby the detent blocks 63 engage with and are positioned by the rotary knob 44 of the rotary control element, as shown in Fig. 1 and 8 to 11 are shown, and at the same time the sight 5 is in a downward closed state, in which it covers the opening 11, the projecting part 43 of the rotary control element is engaged with the first recess 31 of the sliding block, and the projecting rod 51 of the sight is located at the lower limit groove 27 of the rack.

[0015] When the sight 5 is folded upwards, the actuating element 54 is raised upwards to simultaneously push the sight 5 upwards. The rotary control element 4 is caused to rotate clockwise around the rotary shaft 42 by an angle via the rotary knob 44 of the rotary control element 4 (plug connection with the elongated groove 53 of the sight), causing the projecting part 43 of the rotary control element to move from the first recess 31 to the second recess 32 of the sliding block. Simultaneously, the projecting rod 51 of the sight is guided along the rack 25 to move until it reaches the upper limit groove 26 at the top end of the rack, thus allowing the sight 5 to be folded upwards and positioned as shown in Fig. 12, Fig. 13, Fig. 14 to Fig. 15 shown. At the same time, the sight 5 is in an upward-folding state in which the opening 11 is open, the projection part 43 of the rotary control element engages with the second recess 32 of the sliding block, and the projection rod 51 of the sight is located at the upper limit groove 26 of the rack.

[0016] Conversely, when the visor 5 is closed, the actuating part 54 is pulled downwards, causing the visor 5 to drive the rotary control element 4 via the rotary knob 44 to rotate counterclockwise around the rotary shaft 42 by an angle, thereby causing the projecting part 43 of the rotary control element to move from the second recess 32 to the first recess 31 of the sliding block, and simultaneously the projecting rod 51 of the visor is guided along the rack 25 to move to the lower limit groove 27 at the lower end of the rack 25, thereby causing the visor 5 to cover the opening 11 to restore the closed state, as shown in Fig. Shown 1 and 8 to 11.

[0017] The actuating part 54 is folded upwards to remove the visor 5, causing the visor 5 to assume the folded-up position, as shown in Fig. 12, Fig. 13, Fig. 14 to Fig. 15 shown, and then the control knob 6 is pressed (handle 62) so that the round frame 61 rotates counterclockwise around the projecting wall 52 of the sight by an angle, causing the detent blocks 63 of the control knob to disengage from the rotary knob 44 of the rotary control element, as shown in Fig. 16 shown, and at the same time the sight 5 can be removed together with the control knob 6 to achieve the purpose of quick disassembly. Conversely, when reassembling the sight, the control knobs 6 are first fitted to the inner surfaces of the two ends of the sight 5 in the manner of the assembly described above, and then the sight 5 is held so that the elongated grooves 53 at its two ends are aligned and fitted with the rotary knob 44 of the rotary control element, furthermore the control knob 6 is pressed upwards clockwise by an angle, causing the detent blocks 63 to engage and be positioned with the rotary knob 4, as shown in Fig. As shown in Figure 13, the visor 5 is finally assembled and positioned, and the purpose of quick assembly is achieved.

[0018] It follows from the above descriptions that the present invention comprises at least the following advantages and effects.

[0019] 1. The lower end of the through-hole 21 of the cover is provided with a notch 22, which allows the protruding part 43 of the rotary control element to pass through the notch 22 when assembling the rotary control element 4, thus achieving the effect of easy assembly.

[0020] 2. The sliding block 3 is arranged below the through hole 21 of the cover and rests against the elastic element 28, and therefore, when the rotary control element 44 rotates, the projecting part 43 of the rotary control element pushes the sliding block 3 downwards so that it moves and changes the detent position of the sliding block, which engages with the first and second recesses 31, 32 of the sliding block, thereby allowing the rotary control element 4 to be positioned via the restoring force of the elastic element 28.

[0021] 3. The rotary control element 4 can be made of metal material, which improves wear resistance and stability.

[0022] 4. The assembly and disassembly of the visor 5 are simple, easy and quick, resulting in the effect of quick disassembly and assembly.

[0023] 5. The sight can be mounted and dismounted without the use of any tools or screws and can be operated by a single component (the handle 62 of the control element), and therefore operation is convenient.

[0024] 6. When the visor 5 is closed downwards, the rotation of the rotary control element 4 enables the visor 5 to assume a first wave center as its pivot center, and also when the projection part 43 of the rotary control element moves from the second recess 32 to the first recess 31 of the sliding block, the projection rod 51 of the visor is guided along the rack 25 to move from the upper limit groove 26 to the lower limit groove 27, thereby retracting the visor 5 and bringing it close to the helmet shell 1.

[0025] 7. When the visor 5 is flipped upwards, the rotation of the rotary control element 4 allows the pivot position of the visor 5 to be changed to a second center of rotation. As the projection 43 of the rotary control element moves from the first recess 31 to the second recess of the sliding block, the projection rod 51 of the visor is guided along the rack 25 to move from the lower limit groove 27 to the upper limit groove 26. This causes the visor 5 to move forward relative to the helmet shell 1, thereby increasing the gap between the visor 5 and the helmet shell 1. This gap not only provides the necessary space for an anti-fog insert attached to the inside of the visor but also prevents friction.

[0026] 8. Regardless of whether the visor 5 is closed downwards or folded upwards, the projection rod 51 is guided along the rack 25 to move, thus enabling segmented positioning of the visor 5 according to the user's needs, thereby achieving the effect of ease of use.

[0027] The aforementioned embodiments are intended to illustrate the applicability of the present invention. Any equivalent structural variations implemented according to the design of the present invention, such as the shape of the cover, the rotational mode of the rotary control element, the plug connection of the visor with the rotary control element or of the visor with the control knob, the snap connection, etc., shall continue to fall within the scope of protection of the present invention. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] TW 646909

[0002] TW 714972

[0002]

Claims

Visor fastening device for a helmet, comprising: a helmet shell having an opening at a front and recesses on its left and right sides; and two visor fastening structures arranged on the left and right sides of the helmet shell, comprising: two covers arranged within the recesses of the helmet shell, each cover having a through-hole, an elastic element arranged below the through-hole, a rack arranged on one side of each cover, and the rack having elastic extensibility; two sliding blocks arranged below the covers, bearing against the elastic elements, and a first recess and a second recess provided at an upper end of each of the sliding blocks;two rotary control elements arranged in the through-holes of the covers, each rotary control element having at one end an actuating part, in the middle a rotary shaft, on one side of the rotary shaft a projecting part, the projecting part being engaged with the first recess and the second recess of the sliding blocks, and a rotary knob at one end of the rotary shaft; a visor arranged at a front end of the opening of the helmet shell and joined with the rotary control elements for positioning, the projecting rods being arranged on the inner sides of the left and right ends of the visor and the projecting rods being in contact with the racks of the covers; and two control knobs arranged on the inner sides of the left and right ends of the visor and engaging for positioning. Visor mounting structure for a helmet according to claim 1, wherein the racks of the covers are arcuate and the upper end and the lower end are each provided with an upper limiting groove and a lower limiting groove. Visor mounting structure for a helmet according to claim 1, wherein the rotary control elements are made of metal materials.

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