Perimeter adjusting device and helmet

Abstract

The utility model relates to the technical field of helmet equipment, and discloses a circumference adjusting device and a helmet. The circumference adjusting device is used for adjusting the circumference of the helmet and comprises an annular air bag, an inflation part, an air pipe and an exhaust part, a connecting opening is formed in the annular air bag, one end of the air pipe is communicated with the connecting opening, the other end of the air pipe is connected with the inflation part, the inflation part is configured to supply air to the air pipe, and the exhaust part is arranged on the air pipe and used for exhausting air in the air pipe. According to the circumference adjusting device, the circumference of the helmet can be adjusted by controlling the hole diameter of the inner hole of the annular air bag, adjustment is convenient and fast, and the production cost of the helmet and the complexity of circumference adjustment of the helmet are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of helmet equipment technology, and in particular relates to a girth adjustment device and a helmet. Background Technology

[0002] A helmet, as a type of head protection device, is typically used to prevent head injuries from impacts, compression, or other forms of injury in accidents or incidents. To accommodate different head shapes and ensure comfort and safety, helmets are usually equipped with circumference adjustment.

[0003] Currently, helmet circumference adjustment primarily relies on two devices: a rotary adjustment knob and an air conditioning system. The air conditioning system adjusts the amount of gas within the airbags by inflating and deflating them, thus regulating the helmet circumference. However, existing air conditioning systems typically contain multiple interconnected airbags, but only one airbag has both an inlet and an outlet. Gas must be transferred between the airbags via tubing, resulting in slow adjustment speeds. Furthermore, because the airbag inlets and outlets are located in different positions, users must operate them separately, increasing the complexity of the adjustment process. In addition, some helmets' air conditioning systems also serve as safety protection functions, distributing airbags throughout the helmet's interior. This not only increases the complexity of the air conditioning system but also significantly raises the helmet's production cost.

[0004] Therefore, there is an urgent need for a girth adjustment device and helmet to solve the above problems. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a girth adjustment device and helmet, which can adjust the girth of the helmet by controlling the inner hole diameter of the annular airbag. The adjustment is convenient and quick, reducing the production cost of the helmet and the complexity of its girth adjustment.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] On the one hand, a circumference adjustment device is provided for adjusting the circumference of a helmet, including...

[0008] The annular airbag, inflator, air tube, and venting device are provided. The annular airbag is provided with a connection port. One end of the air tube is connected to the connection port and the other end is connected to the inflator. The inflator is configured to supply air to the air tube. The venting device is provided on the air tube to expel the gas in the air tube.

[0009] Optionally, the inner diameter of the first end of the annular airbag is smaller than the inner diameter of the second end of the annular airbag, and the inner diameter of the annular airbag transitions smoothly from the first end to the second end, with the first end and the second end being the two ends of the annular airbag along its extension direction, respectively.

[0010] Optionally, a connecting sleeve is provided at the connection port, and the air tube is detachably fitted onto the connecting sleeve.

[0011] Optionally, the outer wall of the connecting cylinder is provided with an external thread, and the inner wall of the air pipe is provided with an internal thread that mates with the external thread.

[0012] Alternatively, the connecting tube is provided with a slot, and the inner cavity of the air tube is provided with a locking block, which is locked in the slot.

[0013] Optionally, the venting component includes a venting body, a sealing component, an operating component, and a connecting component. The venting body is provided with a gas channel and an vent that communicates with the gas channel. One end of the gas channel is connected to a gas pipe, and the other end is connected to the air outlet of the inflation component. The sealing component is movably disposed at the vent and has a sealing state for sealing the vent and a venting state for releasing the vent. The operating component is movably disposed on the venting body. One end of the connecting component is connected to the sealing component, and the other end is connected to the operating component, driving the operating component to move. The operating component drives the sealing component to switch between the sealing state and the venting state through the connecting component.

[0014] Optionally, an air pump can be used for inflation.

[0015] On the other hand, a helmet is provided, including a shell and the aforementioned girth adjustment device, wherein the shell is provided with a wearing space, the girth adjustment device is detachably disposed in the wearing space, and an annular airbag is connected to the shell.

[0016] Optionally, the helmet also includes fasteners that pass through the inflator and are secured to the shell; the inner wall of the shell is provided with a mounting groove, in which the annular airbag is engaged.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention provides a girth adjustment device and a helmet. The annular airbag is designed to fit snugly against the head, effectively preventing head impact during wear and ensuring comfort. When the helmet girth needs to be reduced, the inflation device is activated, supplying air to the air tube. The air enters the annular airbag through the connection port, increasing its volume. One side of the annular airbag is constrained by the shell and cannot deform, so its inner diameter decreases as air enters. Once the inner diameter reaches a suitable size, the inflation device is deactivated. When the helmet girth needs to be increased, the exhaust device releases air from the air tube. As air is released, air from the annular airbag enters the air tube under pressure and exits, reducing its volume and increasing its inner diameter. Once the inner diameter reaches a suitable size, the exhaust device stops releasing air. Compared with the prior art, the circumference adjustment device provided by this utility model only has one annular airbag and one air tube, which significantly reduces the number of parts and lowers the production cost of the helmet. The helmet circumference can be adjusted by controlling the amount of gas in the annular airbag, making the adjustment convenient and quick. Moreover, the air inlet and outlet of the annular airbag are both through the air tube, so the user only needs to operate at the air tube when adjusting the helmet circumference, which reduces the complexity of helmet circumference adjustment. Attached Figure Description

[0019] Figure 1 A schematic diagram of the girth adjustment device provided by this utility model;

[0020] Figure 2 Exploded view of the girth adjustment device provided by this utility model;

[0021] Figure 3 A schematic diagram of the structure of the helmet provided by this utility model.

[0022] in:

[0023] 100. Helmet; 101. Shell; 102. Wearing space;

[0024] 1. Annular airbag; 11. Connecting cylinder; 111. Slot;

[0025] 2. Inflatable components;

[0026] 3. Trachea;

[0027] 4. Exhaust components; 41. Exhaust body; 42. Gas passage; 43. Operating components. Detailed Implementation

[0028] It should be understood that in the description of this utility model, the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] It should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] Example 1

[0032] like Figures 1 to 3 As shown, this embodiment provides a girth adjustment device, which can adjust the girth of the helmet 100 by controlling the inner diameter of the annular airbag 1. The adjustment is convenient and quick, reducing the production cost of the helmet 100 and the complexity of its girth adjustment.

[0033] See Figure 1 , Figure 2 and Figure 3 The girth adjustment device is used to adjust the girth of the helmet 100. It includes an annular airbag 1, an inflator 2, an air tube 3, and an exhaust device 4. The annular airbag 1 is provided with a connection port. One end of the air tube 3 is connected to the connection port, and the other end is connected to the inflator 2. The inflator 2 is configured to supply air to the air tube 3. The exhaust device 4 is provided on the air tube 3 and is used to exhaust the gas in the air tube 3.

[0034] The girth adjustment device provided in this embodiment features an annular airbag 1, which fits snugly against the human head, effectively preventing head impact with the helmet 100 during wear and ensuring comfort. When the girth of the helmet 100 needs to be reduced, the inflation component 2 is activated, supplying air to the air pipe 3. The air enters the annular airbag 1 through the connection port, increasing its volume. One side of the annular airbag 1 is constrained by the shell 101 and cannot deform. Therefore, when air enters the annular airbag 1, its inner diameter decreases. Once the inner diameter of the annular airbag 1 has decreased to a suitable size, the inflation component 2 is deactivated. When the circumference of the helmet 100 needs to be increased, the gas in the air pipe 3 is discharged using the exhaust device 4. When the gas in the air pipe 3 is discharged, the gas in the annular airbag 1 will enter the air pipe 3 and be discharged from the air pipe 3 under the influence of air pressure, so that the volume of the annular airbag 1 can be reduced and the inner diameter of the annular airbag 1 can be increased. When the inner diameter of the annular airbag 1 has increased to a suitable size, the exhaust device 4 can be controlled to stop venting. Compared with the prior art, the circumference adjustment device provided in this embodiment only has one annular airbag 1 and one air pipe 3, which significantly reduces the number of components and reduces the production cost of the helmet 100. The circumference of the helmet 100 can be adjusted by controlling the amount of gas in the annular airbag 1, and the adjustment process is convenient and quick. Moreover, the air inlet and outlet of the annular airbag 1 are both through the air pipe 3, and the user only needs to operate at the air pipe 3 when adjusting the circumference of the helmet 100, which reduces the complexity of the circumference adjustment of the helmet 100. The appropriate size refers to the position in which the inner wall of the annular airbag 1 can fit snugly against the human head, adapt to different head shapes, and ensure the comfort and safety of wearing the helmet 100.

[0035] Optionally, see Figure 1 and Figure 3 The inner diameter of the annular airbag 1 at its first end is smaller than the inner diameter of the annular airbag 1 at its second end, and the inner diameter of the annular airbag 1 transitions smoothly from the first end to the second end. The first end and the second end are respectively the annular airbag 1 along its extension direction ( Figure 1 The ring-shaped airbag 1 is positioned at both ends in the X direction. The human head has a structure that is wider at the bottom and narrower at the top. This design allows the ring-shaped airbag 1 to fit better against the user's head when wearing the helmet 100, ensuring comfort. Furthermore, the ring-shaped airbag 1 also functions as a safety airbag, protecting the head from injury to a certain extent.

[0036] For example, the first end of the annular airbag 1 is the upper end, and the second end of the annular airbag 1 is the lower end.

[0037] Optionally, see Figure 2 and Figure 3A connecting sleeve 11 is provided at the connection port, and the air tube 3 is detachably sleeved on the connecting sleeve 11. The connecting sleeve 11 facilitates the quick connection of the air tube 3 to the annular airbag 1. This allows the operator to separate the air tube 3 from the connecting sleeve 11, i.e., separate the annular airbag 1 from the air tube 3, and replace the faulty part when the air tube 3 or the annular airbag 1 malfunctions, thus improving the convenience of maintenance of the circumference adjustment device.

[0038] For example, the connecting cylinder 11 is a valve.

[0039] In this embodiment, see Figure 2 and Figure 3 The connecting cylinder 11 is provided with a slot 111, and the inner cavity of the air tube 3 is provided with a locking block (not shown in the figure). The locking block is engaged with the slot 111 to achieve a detachable connection between the connecting cylinder 11 and the air tube 3. The air tube 3 is connected to the connecting cylinder 11 through the locking block and the slot 111, which can ensure the stability of the connection between the air tube 3 and the connecting cylinder 11 and prevent the air tube 3 from separating from the annular airbag 1 during the wearing of the helmet 100. This ensures that the inner diameter of the annular airbag 1 will not change during the use of the helmet 100, that is, the circumference of the helmet 100 will not change.

[0040] In other embodiments, the outer wall of the connecting cylinder 11 is provided with external threads, and the inner wall of the air pipe 3 is provided with internal threads that mate with the external threads. By screwing the air pipe 3, the air pipe 3 can be connected or disconnected from the connecting cylinder 11, which is convenient and quick to operate; moreover, the threaded connection between the air pipe 3 and the connecting cylinder 11 can also ensure the sealing after connection, effectively preventing the leakage of gas in the annular airbag 1, and ensuring that the inner diameter of the annular airbag 1 will not change during the use of the helmet 100, and the circumference of the helmet 100 will not change.

[0041] Optionally, see Figure 2 and Figure 3The exhaust component 4 includes an exhaust body 41, a sealing component (not shown in the figure), an operating component 43, and a connecting component (not shown in the figure). The exhaust body 41 is provided with a gas channel 42 and an exhaust port connected to the gas channel 42. One end of the gas channel 42 is connected to the air pipe 3, and the other end is connected to the air outlet of the inflation component 2. The sealing component is movably disposed at the exhaust port and has a sealing state for sealing the exhaust port and an exhaust state for releasing the exhaust port. The operating component 43 is movably disposed on the exhaust body 41. One end of the connecting component is connected to the sealing component, and the other end is connected to the operating component 43, driving the operating component 43 to move. The operating component 43 drives the sealing component to switch between the sealing state and the exhaust state through the connecting component. When it is necessary to reduce the helmet circumference by 100 or keep the helmet circumference by 100, simply switch the sealing component to the sealing state, so that the gas can only flow between the air tube 3 and the annular airbag 1 and will not leak to the outside of the circumference adjustment device; when it is necessary to increase the helmet circumference by 43, the sealing component is switched to the exhaust state, the exhaust port is opened, and the gas in the annular airbag 1 can be discharged from the air tube 3, thereby realizing the adjustment of the volume of the annular airbag 1, i.e. the helmet circumference by 100.

[0042] For example, the exhaust component 4 is an exhaust valve, the exhaust body 41 is the valve body of the exhaust valve, the sealing component is the valve disc or float of the exhaust valve, the operating component 43 is the operating handle of the exhaust valve, and the connecting component is the valve stem of the exhaust valve.

[0043] Optionally, see Figure 1 The inflation component 2 uses an air pump.

[0044] Example 2

[0045] like Figure 3 As shown, this embodiment provides a helmet 100, including a shell 101 and a girth adjustment device as described in Embodiment 1. A wearing space 102 is provided on the shell 101, and the girth adjustment device is detachably disposed within the wearing space 102. An annular airbag 1 is connected to the shell 101. The girth of the helmet 100 can be adjusted by controlling the air intake and exhaust of the annular airbag 1. The operation is convenient and quick, and the annular airbag 1 also provides a certain degree of safety protection.

[0046] In this embodiment, the helmet 100 also includes a fastener that passes through the inflator 2 and is fastened to the shell 101, thereby realizing a detachable connection between the inflator 2 and the shell 101.

[0047] For example, the fastener is a bolt.

[0048] In this embodiment, the inner wall of the housing 101 is provided with an installation groove, and the annular airbag 1 is locked in the installation groove, realizing the detachable connection between the annular airbag 1 and the housing 101, and the connection operation is simple.

[0049] The above description is only a specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model fall within the protection and disclosure scope of the present utility model.

Claims

1. A girth adjustment device for adjusting the girth of a helmet (100), characterized in that, It includes an annular airbag (1), an inflatable component (2), an air tube (3), and an exhaust component (4). The annular airbag (1) is provided with a connection port. One end of the air tube (3) is connected to the connection port, and the other end is connected to the inflatable component (2). The inflatable component (2) is configured to supply air to the air tube (3). The exhaust component (4) is provided on the air tube (3) and is used to exhaust the gas in the air tube (3). The exhaust component (4) includes an exhaust body (41), a sealing component, an operating component (43), and a connecting component. The exhaust body (41) is provided with a gas channel (42) and an exhaust port communicating with the gas channel (42). One end of the gas channel (42) is connected to the air pipe (3), and the other end is connected to the air outlet of the inflation component (2). The sealing component is movably disposed at the exhaust port and has a sealing state of sealing the exhaust port and an exhaust state of unsealing the exhaust port. The operating component (43) is movably disposed on the exhaust body (41). One end of the connecting component is connected to the sealing component, and the other end is connected to the operating component (43), driving the operating component (43) to move. The operating component (43) drives the sealing component to switch between the sealing state and the exhaust state through the connecting component.

2. The girth adjustment device according to claim 1, characterized in that, The inner diameter of the first end of the annular airbag (1) is smaller than the inner diameter of the second end of the annular airbag (1), and the inner diameter of the annular airbag (1) transitions smoothly from the first end to the second end. The first end and the second end are the two ends of the annular airbag (1) along its extension direction, respectively.

3. The girth adjustment device according to claim 1, characterized in that, A connecting tube (11) is provided at the connection port, and the air tube (3) is detachably sleeved on the connecting tube (11).

4. The girth adjustment device according to claim 3, characterized in that, The outer wall of the connecting cylinder (11) is provided with an external thread, and the inner wall of the air pipe (3) is provided with an internal thread that is threaded with the external thread. Alternatively, the connecting cylinder (11) is provided with a slot (111), and the inner cavity of the air pipe (3) is provided with a locking block, which is locked in the slot (111).

5. The girth adjustment device according to any one of claims 1-4, characterized in that, The inflation component (2) is an air pump.

6. A helmet (100), characterized in that, The device includes a housing (101) and a girth adjustment device as described in any one of claims 1-5, wherein the housing (101) is provided with a wearing space (102), the girth adjustment device is detachably disposed in the wearing space (102), and the annular airbag (1) is connected to the housing (101).

7. The helmet (100) according to claim 6, characterized in that, The helmet (100) also includes fasteners that pass through the inflatable component (2) and are fastened to the housing (101); the inner wall of the housing (101) is provided with a mounting groove, and the annular airbag (1) is engaged in the mounting groove.

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