Adjustable lining structure for helmet and helmet thereof

Abstract

The invention relates to the field of helmets, in particular to an adjustable lining structure for a helmet and the helmet thereof.The adjustable lining structure for the helmet comprises a sponge layer arranged in the helmet and an adjustable lining assembly arranged between the sponge layer and the helmet, the sponge layer is fixedly connected with the helmet, and the adjustable lining assembly is arranged between the sponge layer and the helmet. The adjustable lining assembly comprises a plurality of elastic abutting pieces evenly distributed on the sponge layer in the circumferential direction of the helmet and an adjusting driver capable of synchronously adjusting the abutting force of all the elastic abutting pieces on the head of a user, and each elastic abutting piece abuts against the sponge layer. The deformable capacity is provided for the sponge layer through the adjustable lining assembly, if the size of the head of a user is large, the elastic abutting parts can be adjusted in a self-adaptive mode so as to be tightly attached to the head, and otherwise, if the size of the head of the user is small, the user can start the adjusting driver so that all the elastic abutting parts can be gradually matched with the head of the user.

Description

Technical Field

[0001] The invention relates to the field of helmets, in particular to an adjustable lining structure for a helmet, and also to a helmet with an adjustable lining structure. Background Art

[0002] The main features of existing smart helmets are in radio aspects such as voice collection, video imaging, transmission of collected data, GPS positioning and Bluetooth transmission. However, the lining structure inside the existing smart helmets is fixed and cannot be adjusted, and cannot meet the needs of people with different head sizes.

[0003] The currently disclosed Chinese patent CN216983800U discloses an adjustable lining mechanism for a smart helmet, comprising a smart helmet body, wherein a receiving cavity is provided in the smart helmet body; a protective goggles arranged on the front side of the smart helmet body for eye protection; an adjustable lining assembly connected to the inner wall of the receiving cavity for head protection and fixation; the adjustable lining assembly comprises a wrapping ring, wherein two groups of the wrapping rings are provided, and adjacent wrapping rings are rotatably installed by a rotating rod, and an adjustment mechanism is provided on the outer side of the wrapping ring.

[0004] According to the above patent, the above patent changes the effective distance of the wrapping ring through an adjustment mechanism, and further adjusts the fit between the protective plate and the head until the protective plate is completely fixed around the head. However, this method cannot achieve a uniform effect on the pressure applied to the head, which may cause excessive pressure in certain areas, causing discomfort or even pain. Therefore, there is a need for a lining structure that can adapt to the user's head and can adjust the size according to the user's head on this basis to ensure uniform pressure. Summary of the invention

[0005] In view of the problems existing in the prior art, an adjustable lining structure for a helmet is provided. The present invention provides the sponge layer with deformable ability through an adjustable lining component. If the user's head size is large, the elastic pressure piece will adaptively adjust to fit the head tightly. Conversely, if the user's head size is small, the user can start the adjustment drive to make all the elastic pressure pieces gradually adapt to the user's head.

[0006] To solve the problems of the prior art, the present invention provides an adjustable lining structure for a helmet, comprising a sponge layer arranged in the helmet, and an adjustable lining assembly arranged between the sponge layer and the helmet, wherein the sponge layer is fixedly connected to the helmet, and a cavity for installing the adjustable lining assembly is reserved between the sponge layer and the helmet, and the adjustable lining assembly comprises a plurality of elastic pressing members uniformly distributed on the sponge layer along the circumferential direction of the helmet, and an adjusting driver capable of synchronously adjusting the pressing force of all the elastic pressing members on the user's head, wherein each elastic pressing member contacts the sponge layer, and when the user's head is larger than the size normally wrapped by the sponge layer, as the user continues to wear the helmet, all the elastic pressing members are in a state of adapting to the user's head, and conversely, when the user's head is smaller than the size normally wrapped by the sponge layer, as the user controls the adjusting driver, all the elastic pressing members are in a state of squeezing inwards to force the sponge layer to deform and gradually adapt to the user's head.

[0007] Preferably, the elastic pressure piece is specifically an elastic strip structure, and a top plate coaxial with the top plate is fixedly provided on the inner top of the helmet. The elastic pressure piece has an axial connection portion rotatably connected to the top plate, and a pressure portion bent inwardly in contact with the sponge layer. The top plate has a sleeve for rotatably connecting the axial connection portion. A reset connector is also provided between each elastic pressure piece and the helmet. When the user takes off the helmet, each elastic pressure piece is in a reset state under the action of the corresponding reset connector, so that the user can use the helmet next time.

[0008] Preferably, the sponge layer has an outer ring body fixed to the helmet, and a semicircular body for wrapping the user's head, the pressing portion of the elastic pressing piece has an outer arc plate fitted with the outer ring body of the sponge layer, and an inner arc plate fitted with the semicircular body of the sponge layer, and an active space is formed between the inner arc plate and the outer arc plate for the inner arc plate to deform relative to the outer arc plate, and the end of the inner arc plate extending inward is bent toward the active space.

[0009] Preferably, the reset connecting member has a movable connecting portion fixedly arranged on the outer arc plate of the pressing portion and a fixed connecting portion fixedly arranged on the top plate, and a reset spring fixedly arranged between the movable connecting portion and the fixed connecting portion. When the elastic pressing member is in a semicircular body that squeezes the sponge layer inward, the reset spring is in a stretched state. Conversely, when the elastic pressing member is in a semicircular body that squeezes the sponge layer outward, the reset spring is in a compressed state.

[0010] Preferably, the adjustment driver includes a pull rope capable of pulling the pressing portion of the elastic pressing member to rotate inward with the axial connection portion as the center, and a rotating control member for synchronously driving all the pull ropes to drive each elastic pressing member to squeeze the sponge layer inward, one end of the pull rope is fixedly connected to the outer arc plate of the pressing portion, and the other end is transmission-connected to the rotating control member.

[0011] Preferably, the shaft sleeve has a guide sleeve which is sleeved on the pull rope, and the sleeve hole of the guide sleeve is provided with a rubber layer for preventing the pull rope from being worn. When the pull rope pulls the elastic pressure piece, the length of the pull rope between the elastic pressure piece and the guide sleeve is gradually shortened, so that the sponge layer gradually adapts to the user's head.

[0012] Preferably, the rotary control component has a rotating body rotatably arranged on the top plate, and a knob for the user to rotate the rotating body, the knob is fixedly connected to the rotating body, the top of the helmet is provided with an opening for exposing the knob and facilitating the user to rotate the knob, and the rotating body is provided with a force sleeve for connecting each pull rope.

[0013] Preferably, the pull rope and the force sleeve are in a movably connected state, and one end of the pull rope passing through the force sleeve has a force-bearing part with a diameter larger than the inner diameter of the force sleeve. An adaptation space is reserved between the force sleeve and the force-bearing part for the elastic pressure piece to rotate outward to adaptively press the user's head. When the user controls the elastic pressure piece to rotate inward, until the rotating body rotates to make the force sleeve contact the force-bearing part, as the rotating body continues to rotate, the elastic pressure piece is pulled inward to rotate.

[0014] Preferably, a collar sleeved on the knob is fixedly provided on the top plate, the knob is provided with evenly distributed snap-in grooves around a circle, and the collar is provided with snap-in portions cooperating with the snap-in grooves around a circle.

[0015] The present invention also provides a helmet with an adjustable lining structure, including goggles. Both sides of the helmet have ears for the goggles to be rotatably connected, and each ear is also provided with a connecting buckle for mutual cooperation. The surface of the helmet is also provided with a heat dissipation port, and also includes an adjustable lining structure for the helmet.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention provides the sponge layer with a deformable ability through an adjustable lining component, so that the sponge layer can adapt to the user's head and provide soft support. For heads of different sizes, the helmet can provide a consistent comfort experience. If the user's head size is large, the elastic pressure piece will expand outward under pressure and adaptively adjust to fit the head tightly. Conversely, if the user's head size is small, the user can start the adjustment drive to make all the elastic pressure pieces squeeze inward synchronously, forcing the sponge layer to deform inward and gradually adapt to the size of the user's head, so that the helmet can fit the user's head tightly, reducing the risk of the helmet sliding or falling off during exercise or impact.

[0018] 2. The present invention enables the pressing part to adjust the pressing strength in a rotational manner according to the user's head condition through the cooperation of the rotation of the pressing part and the reset connecting piece, so that the sponge layer can adapt to the user's head. After the user takes off the helmet, the reset connecting piece ensures that the elastic pressing part can be automatically reset after each use, which is convenient for the next use. There is no need to manually adjust or reset the elastic pressing part, which simplifies the process of wearing and removing the helmet and improves the durability of the helmet.

[0019] 3. The present invention controls the adjustment driver. If the user's head is smaller than the normal wrapping range of the sponge layer, the position of the elastic pressure member is adjusted by rotating the control member to make it better fit the user's head. The rotating control member drives all the drawstrings synchronously to ensure that the process of each elastic pressure member squeezing the sponge layer inward is uniform and consistent, so that the pressure distribution inside the helmet is more uniform, thereby improving the wearing comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The invention discloses a stereoscopic structure of an adjustable lining structure for a helmet and a top surface orientation of the helmet.

[0021] Figure 2 The invention discloses a stereoscopic structure diagram of an adjustable lining structure for a helmet and the bottom surface orientation of the helmet.

[0022] Figure 3 The invention discloses an adjustable lining structure for a helmet and a partial plane cross-sectional view of the helmet.

[0023] Figure 4 The invention discloses an adjustable lining structure for a helmet and a partial three-dimensional structural cross-sectional view of the helmet.

[0024] Figure 5 yes Figure 4 An enlarged schematic diagram of point A.

[0025] Figure 6 The present invention is a three-dimensional structural schematic diagram of the top surface orientation of an adjustable lining component of an adjustable lining structure for a helmet.

[0026] Figure 7 The present invention is a three-dimensional structural schematic diagram showing the bottom surface orientation of an adjustable lining component of an adjustable lining structure for a helmet.

[0027] Figure 8 The present invention is a planar cross-sectional view of an adjustable lining component of an adjustable lining structure for a helmet.

[0028] Fig. 9 The invention discloses a three-dimensional structural cross-sectional view of an adjustable lining component of an adjustable lining structure for a helmet.

[0029] Fig.10 yes Fig. 9 An enlarged schematic diagram of point B.

[0030] The numbers in the figure are: 1-helmet; 11-ear; 12-heat dissipation port; 2-sponge layer; 21-outer ring body; 22-semicircular body; 3-elastic pressure piece; 31-axial connection part; 311-sleeve; 32-pressure piece; 321-outer arc plate; 322-inner arc plate; 33-reset connector; 331-movable connection part; 332-fixed connection part; 333-reset spring; 4-adjustment driver; 41-pull rope; 411-guide sleeve; 412-rubber layer; 413-force bearing part; 42-rotation control part; 421-rotating body; 4211-force sleeve; 422-knob; 4221-clamping groove; 5-top plate; 51-ring; 511-clamping part. DETAILED DESCRIPTION

[0031] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] See also Figure 1-Figure 5 As shown, an adjustable lining structure for a helmet includes a sponge layer 2 arranged in the helmet 1, and an adjustable lining assembly arranged between the sponge layer 2 and the helmet 1, the sponge layer 2 is fixedly connected to the helmet 1, and a cavity for installing the adjustable lining assembly is reserved between the sponge layer 2 and the helmet 1, the adjustable lining assembly includes a plurality of elastic pressing members 3 uniformly distributed on the sponge layer 2 along the circumferential direction of the helmet 1, and an adjusting driver 4 capable of synchronously adjusting the pressing force of all the elastic pressing members 3 on the user's head, each elastic pressing member 3 is in contact with the sponge layer 2, when the user's head is larger than the size normally wrapped by the sponge layer 2, as the user continues to wear the helmet 1, all the elastic pressing members 3 are in a state of adapting to the user's head, conversely, when the user's head is smaller than the size normally wrapped by the sponge layer 2, as the user controls the adjusting driver 4, all the elastic pressing members 3 are in a state of squeezing inwards to force the sponge layer 2 to deform and gradually adapt to the user's head.

[0033] When the user is wearing the helmet 1, the user picks up the helmet 1 and holds both sides of the helmet 1 with both hands, preparing to put it on the head. The user gently pulls the helmet 1 down from the top of the head to make the sponge layer 2 touch the head. At this time, the sponge layer 2 is in preliminary contact with the user's head but has not yet completely fit. The user continues to pull the helmet 1 downward to cover the entire head and ensure that the position of the helmet 1 is correct. During this process, the sponge layer 2 will gradually fit the user's head. If the user's head size is large and the sponge layer 2 cannot completely wrap the head, the elastic pressure piece 3 will begin to play a role. As the helmet 1 continues to move downward, the elastic pressure piece 3 will be deformed due to pressure. The elastic pressure piece 3 is evenly distributed along the circumferential direction of the helmet 1, and will be adaptively adjusted according to the actual size of the user's head, expanding outward to accommodate a larger head. The elastic pressure piece 3 The adaptive characteristics enable the helmet 1 to fit the user's head tightly, providing good comfort and stability; if the user's head is small, the sponge layer 2 will appear a little loose, and at this time it is necessary to adjust the pressure of the elastic pressure piece 3 by adjusting the driver 4. After the adjustment driver 4 is started, all the elastic pressure pieces 3 will be squeezed inward synchronously, forcing the sponge layer 2 to deform inward and gradually adapt to the size of the user's head. The user can judge whether the appropriate pressure has been adjusted by feeling. After the user completes the above steps, check the position of the helmet 1 again to ensure that it is stable and comfortable. You can gently shake your head to confirm that the helmet 1 will not loosen or slip. If further fine-tuning is required, the user can repeat the above manual adjustment steps until the optimal state is reached. During wearing, the user will feel that the sponge layer 2 inside the helmet 1 provides soft and comfortable support.

[0034] See also Figure 3-Figure 9 As shown, the elastic pressure piece 3 is specifically an elastic strip structure, and a top plate 5 coaxial with the helmet 1 is fixedly provided on the inner top of the helmet 1. The elastic pressure piece 3 has an axial connection portion 31 rotatably connected to the top plate 5, and a pressure portion 32 bent inwardly in contact with the sponge layer 2. The top plate 5 has a sleeve 311 rotatably connected to the axial connection portion 31. A reset connector 33 is also provided between each elastic pressure piece 3 and the helmet 1. When the user takes off the helmet 1, each elastic pressure piece 3 is in a reset state under the action of the corresponding reset connector 33, so as to facilitate the user to use the helmet 1 next time.

[0035] When the user picks up the helmet 1, he holds both sides of the helmet 1 with both hands, and gently puts the helmet 1 down from the top of the head, so that the sponge layer 2 initially contacts the head. As the helmet 1 continues to move downward, the pressing portion 32 of the elastic pressing piece 3 indirectly contacts the user's head through the sponge layer 2. If the user's head size is large, the pressing portion 32 will be subjected to pressure and expand outward, and the pressing portion 32 is rotatably connected with the shaft sleeve 311 on the top plate 5 through the shaft connection portion 31, so that the pressing portion 32 can adapt to the larger head size. The elastic pressing pieces 3 are evenly distributed along the circumferential direction of the helmet 1, and can be adaptively adjusted according to the actual size of the user's head; if the user's head size is small, the user controls all the pressing portions 32 to rotate inward by adjusting the driver 4, thereby forcing the sponge layer 2 to deform and wrap the user's head, so that the helmet 1 is adapted to the user's head. When the user takes off the helmet 1, the elastic pressing pieces 3 lose external pressure, and each elastic pressing piece 3 automatically returns to the initial position under the action of the corresponding reset connector 33, and returns to the unstressed state, ensuring that the elastic pressing piece 3 can return to the initial state after each use, which is convenient for wearing next time.

[0036] See also Figure 3-Figure 9 As shown, the sponge layer 2 has an outer ring body 21 fixed to the helmet 1, and a semicircular body 22 for wrapping the user's head, the pressing portion 32 of the elastic pressing member 3 has an outer arc plate 321 fitted with the outer ring body 21 of the sponge layer 2, and an inner arc plate 322 fitted with the semicircular body 22 of the sponge layer 2, and an activity space is formed between the inner arc plate 322 and the outer arc plate 321 for the inner arc plate 322 to deform relative to the outer arc plate 321, and the end of the inner arc plate 322 extending inward is bent toward the activity space.

[0037] An activity space is formed between the inner arc plate 322 and the outer arc plate 321, allowing the inner arc plate 322 to be deformed relative to the outer arc plate 321, so that the inner arc plate 322 can be slightly adjusted according to the size and shape of the user's head, so as to better fit the user's head. The end of the inner arc plate 322 extending inward is bent toward the activity space, avoiding direct contact between the sharp end and the user's head, reducing the user's discomfort and pressure points, significantly improving the comfort, adaptability and safety of the helmet 1, and providing the user with a better wearing experience.

[0038] See also Figure 3-Figure 9 As shown, the reset connecting member 33 has a movable connecting portion 331 fixedly arranged on the outer arc plate 321 of the pressing portion 32 and a fixed connecting portion 332 fixedly arranged on the top plate 5, and a reset spring 333 fixedly arranged between the movable connecting portion 331 and the fixed connecting portion 332. When the elastic pressing member 3 is in a state of squeezing the semicircular body 22 of the sponge layer 2 inwardly, the reset spring 333 is in a stretched state. Conversely, when the elastic pressing member 3 is in a state of squeezing the outer ring body 21 of the sponge layer 2 outwardly, the reset spring 333 is in a compressed state.

[0039] When the user's head size is larger, the pressing portion 32 of the elastic pressing piece 3 will expand outward, so that the outer arc plate 321 squeezes the outer ring body 21 of the sponge layer 2 outward. In this case, the return spring 333 will be compressed. This is because the movable connection portion 331 moves toward the fixed connection portion 332 as the elastic pressing piece 3 expands outward, causing the return spring 333 to be compressed. When the user's head size is smaller, the pressing portion 32 of the elastic pressing piece 3 will rotate inward, so that the inner arc plate 322 squeezes the semicircular body 22 of the sponge layer 2 inward. In this case, the return spring 333 will be stretched. This is because the movable connection portion 331 moves in the direction away from the fixed connection portion 332 as the elastic pressing piece 3 rotates inward, causing the return spring 333 to be compressed. After the action of the return spring 333, when the user takes off the helmet 1, the elastic pressing piece 3 will automatically return to the initial position under the restoring force of the return spring 333, ensuring that the elastic pressing piece 3 can be restored to a state of no stress after each use, which is convenient for wearing next time.

[0040] See also Figure 3-Figure 9 As shown, the adjustment driver 4 includes a pull rope 41 capable of pulling the pressing portion 32 of the elastic pressing member 3 to rotate inwardly with the axial connection portion 31 as the center, and a rotation control member 42 for synchronously driving all the pull ropes 41 to drive each elastic pressing member 3 to squeeze the sponge layer 2 inwardly, one end of the pull rope 41 is fixedly connected to the outer arc plate 321 of the pressing portion 32, and the other end is transmission-connected to the rotation control member 42.

[0041] When it is necessary to rotate the elastic pressure member 3 inward, the rotating control member 42 will start and drive all the pull ropes 41 to move synchronously. The pull ropes 41 are driven by the rotating control member 42 to pull the outer arc plate 321 fixedly connected thereto. Since the outer arc plate 321 takes the shaft connection portion 31 as the center of the circle, the pulling of the pull ropes 41 will cause the outer arc plate 321 to rotate inward. As the outer arc plate 321 rotates inward, the entire elastic pressure member 3 will also squeeze the semicircular body 22 of the sponge layer 2 inward. The rotating control member 42 ensures that all the pull ropes 41 can move synchronously, thereby ensuring that each elastic pressure member 3 can rotate inward evenly and consistently, so that the pressure distribution inside the helmet 1 is more uniform, avoiding the situation where local pressure is too high.

[0042] See also Figure 3-Figure 9 As shown, the shaft sleeve 311 has a guide sleeve 411 sleeved on the pull rope 41, and the sleeve hole of the guide sleeve 411 is provided with a rubber layer 412 for preventing the pull rope 41 from being worn. When the pull rope 41 pulls the elastic pressure piece 3, the length of the pull rope 41 between the elastic pressure piece 3 and the guide sleeve 411 is in a state of gradually shortening, so that the sponge layer 2 gradually adapts to the user's head.

[0043] When the rotary control part 42 starts and drives the pull rope 41, the pull rope 41 begins to pull the outer arc plate 321 of the elastic pressure part 3, and the pull rope 41 slides in the guide sleeve 411. The rubber layer 412 of the guide sleeve 411 reduces the friction between the pull rope 41 and the sleeve hole, protecting the pull rope 41 from wear. As the pull rope 41 is pulled, the length of the pull rope 41 between the elastic pressure part 3 and the guide sleeve 411 gradually shortens. Due to the pulling of the pull rope 41, the outer arc plate 321 of the elastic pressure part 3 will rotate inward, thereby driving the inner arc plate 322 to squeeze the sponge layer 2, so that it gradually adapts to the user's head shape.

[0044] See also Figure 3-Figure 10 As shown, the rotation control member 42 has a rotating body 421 rotatably set on the top plate 5, and a knob 422 for the user to rotate the rotating body 421, the knob 422 is fixedly connected to the rotating body 421, and an opening is opened on the top of the helmet 1 for exposing the knob 422 and facilitating the user to rotate the knob 422, and the rotating body 421 has a force sleeve 4211 for connecting each pull rope 41.

[0045] When the user manually adjusts the wrapping strength of the sponge layer 2, the user finds the knob 422 through the opening above the head, and the user turns the knob 422, which drives the rotating body 421 to rotate synchronously. As the rotating body 421 rotates, the force sleeve 421 applies tension to each pull rope 41 connected thereto. The pull rope 41 is acted upon by the tension of the force sleeve 4211, and pulls the outer arc plate 321 of the elastic pressure piece 3 connected thereto, so that the elastic pressure piece 3 rotates inward as a whole, squeezing the sponge layer 2 so that it gradually adapts to the shape of the user's head.

[0046] See also Figure 3-Figure 9 As shown, the pull rope 41 and the force sleeve 4211 are in an active connection state, and one end of the pull rope 41 passing through the force sleeve 4211 has a force-bearing portion 413 with a diameter larger than the inner diameter of the force sleeve 4211, and an adaptation space is reserved between the force sleeve 4211 and the force-bearing portion 413 for the elastic pressure piece 3 to rotate outward to adaptively press the user's head. When the user controls the elastic pressure piece 3 to rotate inward, until the rotating body 421 rotates to make the force sleeve 4211 contact with the force-bearing portion 413, as the rotating body 421 continues to rotate, the elastic pressure piece 3 is in a state of being pulled inward to rotate.

[0047] A certain adaptation space is left between the force-applying sleeve 4211 and the force-bearing portion 413, allowing the elastic pressure-bearing member 3 to rotate outwards to adaptively press the user's head without being pulled by the pull rope 41. In the initial state, the elastic pressure-bearing member 3 can rotate outwards freely to adapt to the user's larger head shape. At this time, there is a gap between the force-applying sleeve 4211 and the force-bearing portion 413, and the pull rope 41 does not apply tension to the elastic pressure-bearing member 3. When a user with a smaller head turns the knob 422, the knob 422 is rotated. The rotating body 421 starts to rotate, and the rotation of the rotating body 421 drives the force-applying sleeve 4211 to move. As the rotating body 421 continues to rotate, the force-applying sleeve 4211 gradually approaches and finally contacts the force-bearing portion 413. Once the force-applying sleeve 421 contacts the force-bearing portion 413, continuing to rotate the rotating body 421 will cause the force-applying sleeve 421 to apply tension to the force-bearing portion 413. The pull rope 41 is acted upon by the tension, pulling the elastic pressure piece 3 to rotate inward, squeezing the sponge layer 2 so that it gradually fits the user's head.

[0048] See also Figure 5-Figure 10 As shown, a collar 51 sleeved on the knob 422 is fixedly provided on the top plate 5 , the knob 422 is provided with evenly distributed snap-in grooves 4221 around a circle, and the collar 51 is provided with snap-in portions 511 matching with the snap-in grooves 4221 around a circle.

[0049] When the user turns the knob 422, the engaging groove 4221 on the knob 422 interacts with the engaging portion 511 on the collar 51. The design of the engaging groove 4221 and the engaging portion 511 enables the knob 422 to be caught by the engaging portion 511 each time it is rotated to a specific position, thereby being kept at that position. The user can feel obvious resistance, indicating that the knob 422 has reached and been locked in a new position. By rotating the knob 422, the user can gradually adjust the position of the knob 422. Each rotation passes through a engaging groove 4221. Each cooperation between the engaging groove 4221 and the engaging portion 511 ensures that the knob 422 can stay stably in a certain position and will not slide by itself due to a slight external force. When the wrapping force of the sponge layer 2 is relaxed, the knob 422 is rotated in the opposite direction to relax the user's head.

[0050] See also Figure 1-Figure 4 As shown, a helmet with an adjustable lining structure includes goggles. Both sides of the helmet 1 have ears 11 for rotatably connecting the goggles. Each ear 11 is also provided with a connecting buckle for mutual cooperation. The surface of the helmet 1 is also provided with a heat dissipation port 12, and also includes an adjustable lining structure for the helmet.

[0051] The goggles and the connecting buckles are not shown in the figure. The ears 11 on both sides of the helmet 1 are used to be rotatably connected to the goggles. The goggles can be freely rotated through the connection points on these ears 11 to adapt to different usage requirements. Each ear 11 is respectively provided with connecting buckles that cooperate with each other and can be used to fix the helmet 1 on the user's head. The heat dissipation ports 12 opened on the surface of the helmet 1 are used to increase air circulation and help dissipate heat from the head.

[0052] The present invention provides the sponge layer 2 with a deformable ability through an adjustable lining component, so that the sponge layer 2 can adapt to the user's head and provide soft support. For heads of different sizes, the helmet 1 can provide a consistent comfort experience. If the user's head size is large, the elastic pressure piece 3 will expand outward under pressure and adaptively adjust to fit the head tightly. Conversely, if the user's head size is small, the user can start the adjustment driver 4 to make all the elastic pressure pieces 3 squeeze inward synchronously, forcing the sponge layer 2 to deform inward and gradually adapt to the size of the user's head, so that the helmet 1 can fit the user's head tightly, reducing the risk of the helmet 1 sliding or falling off during movement or impact.

[0053] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. An adjustable lining structure for a helmet, characterized in that: The helmet (1) comprises a sponge layer (2) arranged in the helmet (1), and an adjustable lining component arranged between the sponge layer (2) and the helmet (1), wherein the sponge layer (2) is fixedly connected to the helmet (1), and a cavity for installing the adjustable lining component is reserved between the sponge layer (2) and the helmet (1), wherein the adjustable lining component comprises a plurality of elastic pressing members (3) uniformly distributed on the sponge layer (2) along the circumferential direction of the helmet (1), and an adjusting driver (4) capable of synchronously adjusting the pressing force of all the elastic pressing members (3) on the user's head, wherein each elastic pressing member (3) contacts the sponge layer (2), and when the user's head is larger than the size normally wrapped by the sponge layer (2), as the user continues to wear the helmet (1), all the elastic pressing members (3) are in a state of adapting to the user's head, and conversely, when the user's head is smaller than the size normally wrapped by the sponge layer (2), as the user controls the adjusting driver (4), all the elastic pressing members (3) are in a state of squeezing inwards to force the sponge layer (2) to deform and gradually adapt to the user's head.

2. The adjustable lining structure for a helmet according to claim 1, characterized in that: The elastic pressure piece (3) is specifically an elastic strip structure. A top plate (5) coaxial with the top plate is fixedly provided on the inner top of the helmet (1). The elastic pressure piece (3) has an axial connection portion (31) rotatably connected to the top plate (5), and a pressure portion (32) bent inwardly in contact with the sponge layer (2). The top plate (5) has an axle sleeve (311) rotatably connected to the axial connection portion (31). A reset connector (33) is also provided between each elastic pressure piece (3) and the helmet (1). When the user takes off the helmet (1), each elastic pressure piece (3) is in a reset state under the action of the corresponding reset connector (33), so as to facilitate the user's use of the helmet (1) next time.

3. The adjustable lining structure for a helmet according to claim 2, characterized in that: The sponge layer (2) comprises an outer ring body (21) fixed to the helmet (1), and a semicircular body (22) for wrapping the head of a user; the pressing portion (32) of the elastic pressing member (3) comprises an outer arc plate (321) fitted with the outer ring body (21) of the sponge layer (2), and an inner arc plate (322) fitted with the semicircular body (22) of the sponge layer (2); an activity space is formed between the inner arc plate (322) and the outer arc plate (321) so that the inner arc plate (322) can be deformed relative to the outer arc plate (321); and the end portion of the inner arc plate (322) extending inwardly is in a state of bending toward the activity space.

4. The adjustable lining structure for a helmet according to claim 3, characterized in that: The reset connecting member (33) comprises a movable connecting portion (331) fixedly arranged on the outer arc plate (321) of the pressing portion (32) and a fixed connecting portion (332) fixedly arranged on the top plate (5), and a reset spring (333) fixedly arranged between the movable connecting portion (331) and the fixed connecting portion (332). When the elastic pressing member (3) is in a state of pressing the semicircular body (22) of the sponge layer (2) inwardly, the reset spring (333) is in a stretched state. Conversely, when the elastic pressing member (3) is in a state of pressing the outer ring body (21) of the sponge layer (2) outwardly, the reset spring (333) is in a compressed state.

5. The adjustable lining structure for a helmet according to claim 3, characterized in that: The adjustment driver (4) comprises a pull rope (41) capable of pulling the pressing portion (32) of the elastic pressing member (3) to rotate inwardly with the shaft connection portion (31) as the center, and a rotation control member (42) for synchronously driving all the pull ropes (41) to drive each elastic pressing member (3) to press the sponge layer (2) inwardly, one end of the pull rope (41) is fixedly connected to the outer arc plate (321) of the pressing portion (32), and the other end is transmission-connected to the rotation control member (42).

6. The adjustable lining structure for a helmet according to claim 5, characterized in that: The shaft sleeve (311) is provided with a guide sleeve (411) sleeved on the pull rope (41), and a rubber layer (412) is provided in the sleeve hole of the guide sleeve (411) for preventing the pull rope (41) from being worn. When the pull rope (41) pulls the elastic pressure piece (3), the length of the pull rope (41) between the elastic pressure piece (3) and the guide sleeve (411) is in a state of gradually shortening, so that the sponge layer (2) gradually adapts to the user's head.

7. The adjustable lining structure for a helmet according to claim 5, characterized in that: The rotation control member (42) comprises a rotating body (421) rotatably arranged on the top plate (5), and a knob (422) for facilitating a user to rotate the rotating body (421); the knob (422) is fixedly connected to the rotating body (421); an opening is provided on the top of the helmet (1) for exposing the knob (422) and for facilitating a user to rotate the knob (422); and a force applying sleeve (4211) is provided on the rotating body (421) for connecting each drawstring (41).

8. The adjustable lining structure for a helmet according to claim 7, characterized in that: The pull rope (41) and the force-applying sleeve (4211) are in an active connection state. One end of the pull rope (41) passing through the force-applying sleeve (4211) has a force-bearing portion (413) whose diameter is larger than the inner diameter of the force-applying sleeve (4211). An adaptable space is reserved between the force-applying sleeve (4211) and the force-bearing portion (413) for the elastic pressure member (3) to rotate outwards to adaptively press against the user's head. When the user controls the elastic pressure member (3) to rotate inwards, until the rotating body (421) rotates so that the force-applying sleeve (4211) contacts the force-bearing portion (413), as the rotating body (421) continues to rotate, the elastic pressure member (3) is pulled to rotate inwards.

9. The adjustable lining structure for a helmet according to claim 7, characterized in that: A sleeve (51) sleeved on the knob (422) is fixedly provided on the top plate (5); the knob (422) is provided with evenly distributed clamping grooves (4221) around its periphery; and the sleeve (51) is provided with a clamping portion (511) matching the clamping grooves (4221) around its periphery.

10. A helmet with an adjustable lining structure, comprising goggles, wherein both sides of the helmet (1) are provided with ears (11) for rotatably connecting the goggles, and each ear (11) is provided with a connecting buckle for mutual cooperation, and a heat dissipation port (12) is provided on the surface of the helmet (1), characterized in that: It also includes an adjustable lining structure for a helmet as described in any one of claims 1-9.

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