Helmet rigidity detection device

Abstract

The utility model discloses a helmet rigidity detection device which comprises a base, a frame body is installed on the top of the base, a partition strip is installed on the inner side face of the frame body, a cover door is installed on the front side of the bottom end of the frame body in a hinged mode, the surface of the cover door is of a partition net structure, and transparent glass is arranged on the two sides and the rear end of the bottom end of the partition strip. A helmet tester is installed on the top of the frame body, a connecting rod is fixedly connected to the bottom end of the helmet tester, and a fixing block is fixedly connected to the bottom end of the connecting rod. A to-be-detected helmet is fixed and limited through the supporting mold, the elastic block is manually pressed to be in limited clamping connection with different positioning holes according to different depths in different helmets, so that the telescopic rod is pulled out of the sleeve rod to achieve height adjustment, the fixing effect is improved, meanwhile, the screw rod is controlled by the handle to rotate, and the detection precision is improved. The placing frame is driven to adjust the height, and the support height change of the helmet structure is completed, so that different height intervals can be detected.

Description

Technical Field

[0001] The utility model relates to the technical field of helmet detection, in particular to a helmet stiffness detection device. Background Art

[0002] As head protection, helmets can prevent or reduce body injuries during short-term or long-term exercise. They can also be used as head protection tools when riding motorcycles or electric vehicles. When driving a motor vehicle, due to the high speed, if there is no helmet to protect the head, it is easy to endanger the personal safety of the driver or athlete in the event of an accident. After the helmet is produced, its rigidity needs to be tested to ensure whether its protective ability meets the standard and can play a protective role. Most of the existing rigidity tests are carried out through helmet-related testers.

[0003] In the prior art, a head mold is usually used to fix the helmet. However, the depth inside the existing helmet is inconsistent, resulting in shaking when fixed. At the same time, the existing structure uses a drop weight free fall to test the stiffness. However, the test results are different for different heights. The prior art cannot adjust the height of the tested helmet, resulting in a single test data. In view of the above problems, a helmet stiffness detection device is provided herein. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a helmet stiffness detection device, which has a height-adjustable support seat and an adjustable support mold for different inner depths to meet the needs of fixing helmets of different sizes.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model discloses a helmet stiffness detection device, comprising a base, a frame body is installed on the top of the base, a partition bar is installed on the inner side surface of the frame body, a cover door is hingedly installed on the front side of the bottom end of the frame body, and the surface of the cover door is arranged as a partition net structure, transparent glass is arranged on both sides of the bottom end and the rear end of the partition bar, a helmet tester is installed on the top of the frame body, a connecting rod is fixedly connected to the bottom end of the connecting rod, a fixing block is fixedly connected to the bottom end of the fixing block, a drop weight is installed on the bottom end of the fixed block, a support seat is installed on the inner bottom end of the frame body, and the top center of the support seat is designed as an opening.

[0007] As a preferred technical solution of the utility model, a driven rod is connected through one side of the support seat, one end of the driven rod passes through the transparent glass and is connected to a turntable, a handle is fixedly installed at one edge of the turntable, a rotating shaft is sleeved at the connection between the driven rod and the support seat, locking knobs are connected through both sides of the surface of the rotating shaft, and the rotating shaft is locked to the support seat through the locking knobs.

[0008] As a preferred technical solution of the utility model, one end of the driven rod is fixedly sleeved with a first bevel gear, the outer surface of the first bevel gear is meshingly transmitted with a second bevel gear, the interior of the second bevel gear is fixedly sleeved with a screw rod, both ends of the screw rod are sleeved with bearing seats, and the bearing seats are respectively fixedly installed on the internal top and bottom of the support seat.

[0009] As a preferred technical solution of the utility model, a slider is threadedly connected to the outer surface of the screw rod, a support rod is fixedly connected to one side of the slider, and a column is fixedly installed on the top of one end of the support rod.

[0010] As a preferred technical solution of the utility model, a support plate is fixedly connected to the top of the column, support rods are installed on both sides of the top of the support plate, and a placement frame is installed on the top of the support rods.

[0011] As a preferred technical solution of the utility model, a supporting mold is fixedly installed at the top center of the placement frame, and force sensors are provided between the placement frame and the supporting mold.

[0012] As a preferred technical solution of the utility model, the supporting mold includes a telescopic rod, a sleeve rod, a positioning hole, a spring block and an arc plate. The telescopic rod is sleeved inside the sleeve rod, and a plurality of positioning holes are provided on the outer surface of the sleeve rod. A spring block is fixedly installed on the outer surface of the telescopic rod, and the telescopic rod is clamped with the positioning hole through the spring block, and the top of the telescopic rod is fixedly connected with an arc plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model fixes and limits the helmet to be tested by supporting the mold, and according to the different depths inside the helmets, the spring block is manually pressed to make it engage with different positioning holes for limiting, so that the telescopic rod is pulled out of the sleeve rod to achieve height adjustment, thereby improving the fixing effect, and at the same time, the handle is used to control the rotation of the screw rod to drive the placement frame to adjust the height, thereby completing the change of the support height of the helmet structure, so that different height ranges can be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a cross-sectional view of the support seat structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the supporting mold structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the rotating shaft positioning structure of the utility model;

[0020] In the figure: 1. base; 2. frame; 3. partition bar; 4. cover door; 5. transparent glass; 6. helmet tester; 7. connecting rod; 8. fixing block; 9. drop hammer; 10. support seat; 11. driven rod; 12. turntable; 13. handle; 14. first bevel gear; 15. second bevel gear; 16. screw rod; 17. bearing seat; 18. slider; 19. support rod; 20. column; 21. support plate; 22. support rod; 23. placement frame; 24. support mold; 2401. telescopic rod; 2402. sleeve rod; 2403. positioning hole; 2404. spring block; 2405. arc plate; 25. rotating shaft; 26. locking knob. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. The same reference numerals in the accompanying drawings all refer to the same components.

[0022] In addition, if a detailed description of a known technology is not necessary for illustrating the features of the present invention, it will be omitted. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0023] Example 1

[0024] like Figure 1-4As shown, the utility model provides a helmet stiffness detection device, including a base 1, a frame 2 is installed on the top of the base 1, a partition bar 3 is installed on the inner side of the frame 2, a cover door 4 is hingedly installed on the front side of the bottom end of the frame 2, and the surface of the cover door 4 is arranged as a partition net structure, transparent glass 5 is arranged on both sides of the bottom end and the rear end of the partition bar 3, a helmet tester 6 is installed on the top of the frame 2, a connecting rod 7 is fixedly connected to the bottom end of the helmet tester 6, a fixing block 8 is fixedly connected to the bottom end of the connecting rod 7, a drop hammer 9 is installed on the bottom end of the fixing block 8, a support seat 10 is installed on the inner bottom end of the frame 2, and the top center of the support seat 10 is designed as an opening.

[0025] Furthermore, a driven rod 11 is connected to one side of the support seat 10, one end of the driven rod 11 passes through the transparent glass 5 and is connected to a turntable 12, a handle 13 is fixedly installed on one edge of the turntable 12, a rotating shaft 25 is sleeved at the connection between the driven rod 11 and the support seat 10, and locking knobs 26 are connected to both sides of the surface of the rotating shaft 25, and the rotating shaft 25 is locked to the support seat 10 through the locking knobs 26.

[0026] One end of the driven rod 11 is fixedly sleeved with a first bevel gear 14, the outer surface of the first bevel gear 14 is meshed with a second bevel gear 15, the interior of the second bevel gear 15 is fixedly sleeved with a screw rod 16, both ends of the screw rod 16 are sleeved with bearing seats 17, and the bearing seats 17 are fixedly installed on the top and bottom of the inner part of the support seat 10 respectively.

[0027] The outer surface of the screw rod 16 is threadedly connected with a slider 18 , one side of the slider 18 is fixedly connected with a support rod 19 , and a column 20 is fixedly installed on the top of one end of the support rod 19 .

[0028] A support plate 21 is fixedly connected to the top of the column 20 , support rods 22 are installed on both sides of the top of the support plate 21 , and a placement frame 23 is installed on the top of the support rods 22 .

[0029] A supporting mold 24 is fixedly installed at the top center of the placement frame 23 , and force sensors are provided between the placement frame 23 and the supporting mold 24 .

[0030] The supporting mold 24 includes a telescopic rod 2401, a sleeve rod 2402, a positioning hole 2403, a spring block 2404 and an arc plate 2405. The telescopic rod 2401 is sleeved inside the sleeve rod 2402. A plurality of positioning holes 2403 are provided on the outer surface of the sleeve rod 2402. The spring block 2404 is fixedly installed on the outer surface of the telescopic rod 2401, and the telescopic rod 2401 is clamped with the positioning hole 2403 through the spring block 2404. The top of the telescopic rod 2401 is fixedly connected with the arc plate 2405.

[0031] Specifically, a helmet is placed on the support module 24, and the arc plate 2405 extends into the interior of the helmet for support. According to the different specifications and sizes of the helmet, the spring block 2404 is manually pressed to separate it from the positioning block 2403, and then it is clamped and fixed in the corresponding positioning hole 2403 at a suitable height, so that the telescopic rod 2401 drives the arc plate 2405 to move to complete the adaptation and matching limit, and the cover door 4 is used to cover the structure, and the transparent glass 5 is used to block the surroundings of the support seat 10 to prevent the helmet from breaking and the fragments from scattering and threatening personal safety. The handle 13 is manually held to drive the turntable 12 to rotate, and the turntable 12 drives the first bevel gear 14 to rotate through the driven rod 11. The wheel 14 drives the second bevel gear 15 to rotate through meshing transmission, and the second bevel gear 15 drives the screw 16 to rotate through the bearing seat 17, and the screw 16 drives the slider 18 to move up and down on its surface, and the slider 18 drives the support plate 21 to move and adjust through the support rod 19 and the column 20, thereby completing the height placement adjustment of the helmet structure. After the adjustment is completed, the locking knob 26 is manually rotated to lock the rotating shaft 25 to complete the height limit, and the falling hammer is electrically controlled by the QB-8800 helmet tester 6 to make the free fall hit the helmet, and the stiffness is tested by the DBSL-30T force sensor between the placement frame 23 and the support mold 24.

[0032] The utility model fixes and limits the helmet to be tested by supporting the mold 24. According to the different depths inside the helmets, the spring block 2404 is manually pressed to limit and engage with different positioning holes 2403, so that the telescopic rod 2401 is pulled out of the sleeve rod 2402 to achieve height adjustment, thereby improving the fixing effect. At the same time, the handle 13 is used to control the rotation of the screw rod 16 to drive the placement frame 23 to adjust the height, thereby completing the change of the support height of the helmet structure, so that different height ranges can be tested.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A helmet stiffness detection device, comprising a base (1), It is characterized in that A frame (2) is installed on the top of the base (1), a partition bar (3) is installed on the inner side of the frame (2), a cover door (4) is hingedly installed on the front side of the bottom end of the frame (2), and the surface of the cover door (4) is arranged as a partition net structure, transparent glass (5) is arranged on both sides and the rear end of the bottom end of the partition bar (3), a helmet tester (6) is installed on the top of the frame (2), a connecting rod (7) is fixedly connected to the bottom end of the helmet tester (6), a fixing block (8) is fixedly connected to the bottom end of the connecting rod (7), a drop hammer (9) is installed on the bottom end of the fixing block (8), and a support seat (10) is installed on the inner bottom end of the frame (2), and the top center of the support seat (10) is designed to be open.

2. A helmet stiffness detection device according to claim 1, It is characterized in that A driven rod (11) is connected through one side of the support seat (10); one end of the driven rod (11) passes through the transparent glass (5) and is connected to a turntable (12); a handle (13) is fixedly mounted on one edge of the turntable (12); a rotating shaft (25) is sleeved at the connection between the driven rod (11) and the support seat (10); locking knobs (26) are connected through both sides of the surface of the rotating shaft (25); and the rotating shaft (25) is locked with the support seat (10) via the locking knobs (26).

3. A helmet stiffness detection device according to claim 2, It is characterized in that One end of the driven rod (11) is fixedly sleeved with a first bevel gear (14), the outer surface of the first bevel gear (14) is meshed with a second bevel gear (15), the interior of the second bevel gear (15) is fixedly sleeved with a lead screw (16), both ends of the lead screw (16) are sleeved with bearing seats (17), and the bearing seats (17) are respectively fixedly mounted on the top and bottom of the interior of the support seat (10).

4. A helmet stiffness detection device according to claim 3, It is characterized in that The outer surface of the screw rod (16) is threadedly connected to a slider (18), one side of the slider (18) is fixedly connected to a support rod (19), and a column (20) is fixedly installed on the top of one end of the support rod (19).

5. A helmet stiffness detection device according to claim 4, It is characterized in that A support plate (21) is fixedly connected to the top of the upright column (20), support rods (22) are installed on both sides of the top of the support plate (21), and a placement frame (23) is installed on the top of the support rods (22).

6. A helmet stiffness detection device according to claim 5, It is characterized in that A supporting mold (24) is fixedly installed at the top center of the placement frame (23), and force sensors are provided between the placement frame (23) and the supporting mold (24).

7. A helmet stiffness detection device according to claim 6, It is characterized in that The supporting mold (24) comprises a telescopic rod (2401), a sleeve rod (2402), a positioning hole (2403), a spring block (2404) and an arc plate (2405); the telescopic rod (2401) is sleeved inside the sleeve rod (2402); a plurality of positioning holes (2403) are provided on the outer surface of the sleeve rod (2402); a spring block (2404) is fixedly mounted on the outer surface of the telescopic rod (2401); the telescopic rod (2401) is clamped with the positioning hole (2403) through the spring block (2404); and the top of the telescopic rod (2401) is fixedly connected with the arc plate (2405).

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