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CN-224219578-U - Adjustable helmet

CN224219578UCN 224219578 UCN224219578 UCN 224219578UCN-224219578-U

Abstract

The adjustable helmet comprises a shell and a buffer structure layer arranged in the shell, wherein a head containing cavity is arranged in the buffer structure layer, two lug containing cavities are arranged in the head containing cavity, mounting holes are formed in the left end and the right end of the shell, each lug containing cavity is communicated with the mounting holes through the corresponding holes, a ventilation seat is correspondingly arranged in each mounting hole and is arranged on the outer side of the shell, one end of the ventilation seat, which faces away from the shell, is provided with a protruding shaft part, a ventilation air duct communicated with the lug containing cavity is arranged in the protruding shaft part, a rotatable ventilation rotating cover is sleeved on the protruding shaft part, a front ventilation hole communicated with the ventilation air duct is formed in the front end of the protruding shaft part, and a rotary air port is formed in the peripheral surface of the ventilation rotating cover. When the rotatory wind gap on the ventilation spiral cover overlaps with the preceding ventilation hole of ventilation seat, outside wind enters into the ear appearance intracavity for the ear appearance intracavity can ventilate ventilatively, reduces the probability that the ear when riding was stuffy, moist scheduling problem takes place, improves the comfort level of riding passerby.

Inventors

  • ZENG WENYU
  • ZENG WENZHAN

Assignees

  • 佛山市天翔运动用品有限公司

Dates

Publication Date
20260512
Application Date
20250729

Claims (10)

  1. 1. The utility model provides an adjustable helmet, includes shell (1), locates the buffer structure layer in shell (1), the inside on buffer structure layer is the head appearance chamber, the head holds the intracavity and is equipped with two ear appearance chambeies, its characterized in that: The device comprises a shell (1), wherein mounting holes (11) are formed in the left end and the right end of the shell (1), each lug accommodating cavity corresponds to one mounting hole (11), each lug accommodating cavity is communicated with the mounting hole (11) through a matching hole (30), each mounting hole (11) corresponds to one ventilation seat (4), the ventilation seats (4) are arranged on the outer side of the shell (1), a protruding shaft part (41) is arranged at one end, facing away from the shell (1), of each ventilation seat (4), and a ventilation air duct (42) communicated with each lug accommodating cavity is arranged in each protruding shaft part (41); The rotary ventilation rotary cover (5) is sleeved on the protruding shaft part (41), a rotary round groove (51) for inserting the protruding shaft part (41) is formed in one end of the ventilation rotary cover (5) facing the shell (1), a front ventilation hole (43) communicated with the ventilation air duct (42) is formed in the front end of the protruding shaft part (41), a rotary air opening (52) penetrating through the circumferential groove surface of the rotary round groove (51) is formed in the outer circumferential surface of the ventilation rotary cover (5), and the rotary air opening (52) can rotate along with the ventilation rotary cover (5) by taking the protruding shaft part (41) as a rotation center and is staggered and overlapped with the front ventilation hole (43).
  2. 2. The adjustable helmet according to claim 1, wherein a matching round hole (44) communicated with the ventilation air duct (42) is formed in the axial end face of the protruding shaft portion (41), a round groove protruding shaft (53) which can be rotatably matched in the matching round hole (44) is protruding on the axial end face of the rotary round groove (51), the round groove protruding shaft (53) is connected with a rotary limiting block (6) which is in sliding pressing contact with the axial end face of the ventilation air duct (42), and the rotary limiting block (6) and the axial end face of the rotary round groove (51) are matched together to limit left and right movement of the ventilation rotary cover (5).
  3. 3. The adjustable helmet according to claim 2, wherein the axial end face of the circular groove protruding shaft (53) is concavely provided with a linkage groove (531), the rotation limiting block (6) is convexly provided with a linkage protruding portion (61) which is matched in the linkage groove (531), and the cross section shapes of the linkage protruding portion (61) and the linkage groove (531) are polygonal.
  4. 4. An adjustable helmet according to claim 1, characterized in that a first waterproof structure is provided between the ventilation seat (4) and the outer shell (1) for preventing rainwater from flowing from between the ventilation seat (4) and the outer shell (1) to the mounting hole (11).
  5. 5. The adjustable helmet according to claim 4, wherein the first waterproof structure comprises a first sealing ring (8), a first annular sealing groove (45) is formed in one side, facing the shell (1), of the ventilation seat (4), a second annular sealing groove (46) is formed in the axial end face of the protruding shaft portion (41), a surrounding ring of the second annular sealing groove (46) axially corresponds to the mounting hole (11), the diameter of the surrounding ring of the first annular sealing groove (45) is larger than the diameter of the mounting hole (11), and the first sealing ring (8) is at least partially embedded into the first annular sealing groove (45).
  6. 6. An adjustable helmet according to claim 1, wherein a second waterproof structure is provided between the axial end face of the protruding shaft portion (41) and the axial end face of the rotary circular groove (51) for preventing rainwater from flowing from the mating circular hole (44) to the ventilation air duct (42).
  7. 7. An adjustable helmet according to claim 6 wherein the second waterproof structure comprises a second sealing ring (9), a second annular sealing groove (46) is formed in an axial end face of the protruding shaft portion (41), the mating round hole (44) is located in an encircling ring of the second annular sealing groove (46), and the second sealing ring (9) is at least partially embedded into the second annular sealing groove (46).
  8. 8. An adjustable helmet according to claim 1, wherein a third sealing ring (10) is arranged on the outer peripheral surface of the protruding shaft portion (41), the front ventilation hole (43) is located in the surrounding ring of the third sealing ring (10), and the third sealing ring (10) is used for being in contact with the circumferential groove surface of the rotary circular groove (51).
  9. 9. An adjustable helmet according to claim 8, wherein a third annular sealing groove (47) is provided on the outer peripheral surface of the protruding shaft portion (41), the front ventilation hole (43) is located in an enclosing ring of the third annular sealing groove (47), and the third sealing ring (10) is at least partially embedded in the third annular sealing groove (47).
  10. 10. An adjustable helmet according to any one of claims 1 to 9, wherein a limit protrusion (48) is provided on the outer peripheral surface of the protruding portion (41), a limit groove (54) is provided on the circumferential groove surface of the rotary circular groove (51), two ends of the limit groove (54) are a first limit surface and a second limit surface, respectively, and the limit protrusion (48) extends into the limit groove (54) and is located between the first limit surface and the second limit surface.

Description

Adjustable helmet Technical Field The utility model relates to the technical field of helmets, in particular to an adjustable helmet. Background The electric bicycle helmet plays an important safety role in the process of riding the electric bicycle, can provide effective protection for the head of a rider when a riding accident occurs, and reduces the risk of head injury. Referring to the technical scheme of publication number CN218500069U and the technical scheme of publication number CN222692816U, the existing 3/4 semi-helmet type helmet generally comprises a shell, a buffer layer, a comfortable pad and the like, a head containing cavity for wrapping the head of a rider is arranged in the buffer layer, and ear containing cavities for containing ears of the rider are arranged at the left end and the right end of the head containing cavity. However, although the electric bicycle helmet realizes limited ventilation through the ventilation seam between the head and the opening of the head cavity, the air inlet quantity is limited, and the air is difficult to flow to the ear cavity, or the air quantity flowing to the ear cavity is small, so that the problems of sultry of the ear and damp caused by sultry sweat in summer or long-time riding are prominent, and skin discomfort is easy to occur. Disclosure of utility model In order to overcome the defects in the prior art, the utility model provides an adjustable helmet. The technical scheme adopted for solving the technical problems is as follows: The utility model provides an adjustable helmet, includes the shell, locates the buffer structure layer in the shell, the inside on buffer structure layer is the head appearance chamber, the head holds the intracavity and is equipped with two ear appearance chambeies, its characterized in that: Mounting holes are formed in the left end and the right end of the shell, each lug accommodating cavity corresponds to one mounting hole, and each lug accommodating cavity is communicated with the mounting hole through a matching hole; each mounting hole is correspondingly provided with a ventilation seat, and the ventilation seats are mounted on the outer side of the shell; a protruding shaft part is arranged at one end of the ventilation seat, which is away from the shell, and a ventilation air duct communicated with the ear accommodating cavity is arranged in the protruding shaft part; The rotary ventilation rotary cover is sleeved on the protruding shaft part, a rotary circular groove for the protruding shaft part to be inserted is formed in one end of the ventilation rotary cover, facing the shell, of the protruding shaft part, a front ventilation hole communicated with the ventilation air duct is formed in the front end of the protruding shaft part, a rotary air port penetrating through the circumferential groove surface of the rotary circular groove is formed in the peripheral surface of the ventilation rotary cover, and the rotary air port can be staggered and overlapped with the front ventilation hole along with rotation of the ventilation rotary cover by taking the protruding shaft part as a rotation center. According to the utility model, the axial end face of the protruding shaft part is provided with the matching round hole communicated with the ventilation air duct, the axial end face of the rotary round groove is provided with the round groove protruding shaft which can be in rotary fit in the matching round hole in a protruding mode, the round groove protruding shaft is connected with the rotary limiting block which is in sliding pressing contact with the axial end face of the ventilation air duct, and the rotary limiting block and the axial end face of the rotary round groove are matched together to limit the ventilation rotary cover to move left and right. In the utility model, a linkage groove is concavely arranged on the axial end face of the circular groove convex shaft, a linkage convex part which is matched in the linkage groove is convexly arranged on the rotation limiting block, and the cross section shapes of the linkage convex part and the linkage groove are polygonal. In the utility model, a first waterproof structure is arranged between the ventilation seat and the shell and used for preventing rainwater from flowing to the mounting hole from the ventilation seat to the shell. In the utility model, the first waterproof structure comprises a first sealing ring, a first annular sealing groove is arranged on one side, facing the shell, of the ventilation seat, a second annular sealing groove is arranged on the axial end face of the protruding shaft part, the surrounding ring of the second annular sealing groove axially corresponds to the mounting hole, the diameter of the surrounding ring of the first annular sealing groove is larger than that of the mounting hole, and the first sealing ring is at least partially embedded into the first annular sealing groove. In the utility model, a second waterproof s