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KR-20260067062-A - Side support device of headrest

KR20260067062AKR 20260067062 AKR20260067062 AKR 20260067062AKR-20260067062-A

Abstract

The present invention discloses a side support device for a headrest that can stably support the side portion of the head of a passenger seated on a seat. The side support device of the headrest described above includes a fixed body part installed on the seat back, a movable body part installed pivotably with respect to the fixed body part, a four-bar link part installed between the fixed body part and the movable body part to pivotably support the movable body part with respect to the fixed body part, a trigger link part that restrains or releases the pivoting and linear movement of the movable body part with respect to the fixed body part, and a release operating part that controls the operation of the trigger link part.

Inventors

  • 박두원

Assignees

  • 주식회사 서연이화

Dates

Publication Date
20260512
Application Date
20241105

Claims (20)

  1. Fixed body part installed on the seat back, A movable body part installed pivotably with respect to the above fixed body part, A four-bar linkage member installed between the fixed body part and the movable body part to pivotably support the movable body part with respect to the fixed body part, A trigger link portion that restricts or releases the pivoting and linear movements of the movable body portion relative to the fixed body portion, and A side support device for a headrest including a release operating part that controls the operation of the above-mentioned trigger link part.
  2. In claim 1, A side support device for a headrest, characterized in that the movable body part is installed to pivot forward at at least one of the left and right sides of the fixed body part.
  3. In claim 1, A side support device for a headrest characterized by further including a first elastic member that provides operating force in a pivoting direction to the above-mentioned movable body part.
  4. In claim 3, A side support device for a headrest, characterized in that the first elastic member is configured to provide an operating force in the pivoting direction to the four-bar linkage portion.
  5. In claim 3, The above movable body part A swing body part operating in a pivoting direction relative to the fixed body part, and A side support device for a headrest characterized by having a sliding body part that operates in a straight direction relative to the above-mentioned swing body part.
  6. In claim 5, A side support device for a headrest, characterized by further including a guide portion for guiding the linear movement of the sliding body portion relative to the swing body portion.
  7. In claim 6, The above guide part A first guide plate installed in the swing body portion, and A side support device for a headrest characterized by having a second guide plate that is coupled to the first guide plate so as to be movable in a linear direction and installed in the sliding body portion.
  8. In claim 5, A side support device for a headrest characterized by further including a second elastic member that provides a linear operating force to the above-mentioned sliding body portion.
  9. In claim 8, A side support device for a headrest characterized in that the second elastic member is installed between the swing body part and the sliding body part.
  10. In claim 5, The above four-bar linkage A first arm, having both ends hinge-connected to the fixed body portion and the swing body portion, respectively, and A side support device for a headrest characterized by having a second arm, each having both ends hinge-connected to the fixed body part and the swing body part at a position spaced apart from the first arm.
  11. In claim 10, The above fixed body part A first mount part that hinge-couples a first hinge part provided at one end of the first arm, and A side support device for a headrest characterized by having a second mount portion that hinge-connects a first hinge portion provided at one end of the second arm.
  12. In claim 11, A side support device for a headrest, characterized in that the first elastic member is installed at least one of the first hinge portion of the first arm or the first hinge portion of the second arm and provides elastic force in the pivoting direction to at least one of the first arm or the second arm.
  13. In claim 10, The above swing body part A first mount part that hinge-connects a second hinge part provided at the other end of the first arm, and A side support device for a headrest characterized by having a second mount portion that hinge-connects a second hinge portion provided at the other end of the second arm.
  14. In claim 5, The above trigger link part A main trigger arm hinge-connected to the above swing body, A first trigger arm installed at one end of the main trigger arm and capable of being connected to the fixed body, and A side support device for a headrest characterized by having a second trigger arm installed at the other end of the main trigger arm and capable of being connected to the sliding body.
  15. In claim 14, A side support device for a headrest characterized in that the first trigger arm is installed to be connectable to a first locking part provided in the fixed body part.
  16. In claim 14, A side support device for a headrest characterized in that the second trigger arm is installed to be connectable to a second locking part provided in the sliding body part.
  17. In claim 14, A side support device for a headrest, further comprising a fixed hinge portion that hinge-connects the main trigger arm and the first trigger arm, wherein the fixed hinge portion is installed in the swing body portion and integrally pivotably connects the main trigger arm and the first trigger arm.
  18. In claim 14, A side support device for a headrest, further comprising a movable hinge portion that hinge-connects the main trigger arm and the second trigger arm so as to be linked with the release operating portion, wherein the movable hinge portion is configured such that the hinge position is displaced by pressure from the release operating portion to induce a release operation of the first trigger arm and a release operation of the second trigger arm.
  19. In claim 18, A side support device for a headrest, characterized in that the release operating part is installed to be movable from the outside of the sliding body part toward the inside of the swing body part, and the free end is positioned toward the movable hinge part of the trigger link part.
  20. In claim 14, A side support device for a headrest, characterized in that the swing body portion has an opening that accommodates the free end portion of the first trigger arm so as to be extendable and retractable.

Description

Side support device of headrest The present invention relates to a side support device for a headrest, and more specifically, to a side support device for a headrest that can stably support the side portion of the head of a passenger seated on a seat. Generally, headrests equipped in automobiles are installed on the upper part of the seat back and provide stable support to the occupant's occipital region while driving. By preventing sudden head movements caused by inertia in the event of a collision or rear-end accident, this prevents injury to the neck or cervical spine. In addition, the headrest provides a more comfortable seating experience by stably supporting the back of the head when the occupant is resting. However, conventional headrests have a structure that allows contact only with the back of the occupant's head, so there are limitations in providing a more comfortable seating experience. Accordingly, there is a growing demand for the development of a new type of headrest that allows for a wider contact area with the occupant's head. FIG. 1 is a perspective view illustrating a side support device for a headrest according to an embodiment of the present invention. FIG. 2 is a cross-sectional view illustrating the internal configuration of the side support device of the headrest shown in FIG. 1. Figure 3 is an exploded view of the side support device of the headrest shown in Figure 1. FIG. 4 is a perspective view showing the swing body part illustrated in FIG. 3 from the opposite side. FIG. 5 is a perspective view illustrating the four-bar linkage and trigger linkage shown in FIG. 2. FIG. 6 is a diagram for explaining the process of transitioning from a constrained state to a released state of the trigger link part according to the operation of the release operation part shown in FIG. 2. FIGS. 7 and FIGS. 8 are a perspective view and a cross-sectional view illustrating the state prior to operation of a side support device of a headrest according to an embodiment of the present invention. FIGS. 9 and FIGS. 10 are a perspective view and a cross-sectional view illustrating the pivoting behavior of a movable body part relative to a fixed body part in a side support device of a headrest according to an embodiment of the present invention. FIGS. 11 and FIGS. 12 are a perspective view and a cross-sectional view illustrating the linear movement of the sliding body portion relative to the swing body portion in a side support device of a headrest according to an embodiment of the present invention. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached illustrative drawings. Referring to the drawings, the headrest (1) to which the embodiment of the present invention is applied is installed via a stay rod (3) on the upper part of the seat back (2) and is configured to support mainly the back of the head of the occupant (4). A side support device for a headrest according to an embodiment of the present invention comprises a fixed body part (10), a movable body part (20), a four-bar link part (30), a trigger link part (40), and a release operating part (50). The fixed body part (10) is installed to be fixed to the seat back (2) of the headrest (1) via the stay rod (3). In this case, the fixed body part (10) includes a cushion material (not shown) configured to cover the entire external area. The movable body part (20) is configured to be installed so as to be pivotable toward the front relative to the fixed body part (10). In this case, the movable body part (20) includes a cushioning material (not shown) configured to cover the entire external area in the same way as the fixed body part (10). In particular, it is preferable that the movable body part (20) be installed so as to be pivotable toward the front via the four-bar link part (30) at at least one of the left and right sides of the fixed body part (10). That is, the movable body part (20) may be installed so as to be pivotable toward the front at either the left or right side of the fixed body part (10). To this end, the movable body part (20) is configured to have a swing body part (210) that operates in a pivoting direction with respect to the fixed body part (10) via the four-bar link part (30) and the first elastic member (60) described later, and a sliding body part (220) that operates in a linear direction via the guide part (230) and the second elastic member (70) described later with respect to the swing body part. Additionally, the moving body part (20) is configured to further include a guide part (230) for guiding the linear movement of the sliding body part (220) relative to the swing body part (210). At this time, the guide portion (230) is configured to include a first guide plate (231) installed on the front portion of the swing body portion (210), and a second guide plate (232) which is coupled to the first guide plate (231) so as to be movable in a linear direction and is in