CN104369682B - Chair headrest verts tunable arrangement - Google Patents

Abstract

The invention discloses a seat headrest tilting adjustable device, which comprises two headrest rods, an "n" shaped bending tube, a rotating shaft, a side support plate, a limit bracket, a rotating shaft return torsion spring, an outer plate, a support Plate, lower tooth plate, upper tooth plate and lower tooth plate return springs. In the initial state, the upper tooth plate and the lower tooth plate mesh together, and the horizontal guide column is located at the front end of the arc surface at the top of the guide window, pushing the bending tube forward , the bending tube drives the upper tooth plate to move forward relative to the lower tooth plate. After each tooth is moved, the lower tooth plate resets under the action of the return spring of the lower tooth plate, and then meshes with the last tooth of the upper tooth plate until it is horizontally guided The column is located at the rear end of the arc surface at the top of the guide window. At this time, the upper tooth plate and the lower tooth plate are still meshed together; continue to push the bending tube forward, and the horizontal guide column moves down along the rear inclined surface in the guide window, and the upper tooth plate The tooth plate is separated from the lower tooth plate, and the bending tube automatically returns to the initial state under the action of the return torsion spring of the rotating shaft, and can be adjusted at any angle within a certain range.

Description

Seat headrest tilting adjustable device

technical field

The invention relates to the technical field of seat headrests, in particular to a tilting and adjustable device for rotating seat headrests.

Background technique

The seat headrest is set on the "n" shaped bending pipe, and the two ends of the bending pipe are respectively installed on the respective corresponding headrest rods, and the lower ends of the headrest rods are inserted into the backrest of the car seat. The existing seat headrest usually can only be turned over as a whole, and cannot be tilted to any desired angle according to the user's choice, and the adjustability is poor.

Contents of the invention

The present invention improves on the above technical problems, and intends to provide an adjustable tilting device for the headrest of a seat, which can be adjusted at any angle within a certain range to meet the requirements of different passengers.

For this reason, the technical solution adopted by the present invention is: a seat headrest tilting adjustable device, including two headrest rods, an "n" shaped bending tube and a rotating shaft, characterized in that: the bending tube The right end is welded with a side support plate, the headrest rod on the right is hinged to the right end of the rotating shaft with the flattened part and the side support plate, the left end of the bent pipe is welded with a limit bracket, and the upper end of the left headrest rod passes through the flattened part A support plate is welded, the limit bracket and the support plate are hinged at the left end of the rotating shaft, and the limit bracket, support plate and outer plate are sequentially fitted on the rotating shaft from inside to outside, and the gap between the limit bracket and the outer plate The lower tooth plate and the upper tooth plate are installed, the lower end of the lower tooth plate is provided with a circular hinge joint, and the support plate is provided with a hinge gap matching the circular hinge joint, and the circular hinge joint is placed in the hinge gap , so as to realize the hinge connection between the lower tooth plate and the support plate, and the hinge point of the lower tooth plate and the support plate is located behind the rotating shaft, the lower tooth plate meshes with the upper tooth plate, and the lower tooth plate is installed between the lower tooth plate and the support plate The return spring, the upper tooth plate, the outer plate, and the limit bracket are riveted and fixed by at least two riveting pins arranged at horizontal intervals, and the inner side of the lower tooth plate is provided with a horizontal guide column, which is inserted into the limit bracket In the guide window opened, the top of the guide window is an arc surface, and the height of the rear end of the guide window is gradually reduced to form a slope. On the hanging pin vertically arranged on the rotating shaft, the other end is hung on the front of the limit bracket;

In the initial state, the upper tooth plate and the lower tooth plate mesh together, and the horizontal guide column is located at the front end of the arc surface at the top of the guide window, pushing the bending tube forward, and the bending tube drives the upper tooth plate to move forward relative to the lower tooth plate. After moving one tooth, the lower tooth plate resets under the action of the return spring of the lower tooth plate, and then meshes with the last tooth of the upper tooth plate until the horizontal guide column is located at the rear end of the top arc surface of the guide window. At this time, the upper tooth plate and The lower tooth plates are still meshed together; continue to push the bending tube forward, the horizontal guide column moves down along the rear slope in the guide window, the upper tooth plate breaks away from the lower tooth plate, and the bending tube returns under the position of the torsion spring on the rotating shaft. Automatically return to the initial state under the action.

Preferably, the return spring of the lower tooth plate is also a torsion spring, but the torsion spring has less than one turn. One end of the torsion spring is hung in the gap on the top of the support plate, and the other end of the torsion spring is hung on the front end of the lower tooth plate. in the bottom notch. The lower tooth plate only needs a small restoring force to return to its position.

The shaft return torsion spring is covered with a noise-absorbing net, and the headrest foam that is usually attached to the shaft return torsion spring is EPP hard foam. The EPP hard foam is separated from the shaft return torsion spring by a sound-absorbing net, which can eliminate friction noise , to play a muffler effect.

The hanging pin is made of a scroll spring, and the rotating shaft is provided with a hanging pin hole. After the scroll spring is wrapped tightly, it can be directly inserted into the hanging pin hole to install and fix it. The scroll spring is fixed in the hanging pin hole by its own spring force. Compared with the traditional hanging pin installation, the welding process is omitted and the firmness of the installation can be guaranteed.

When in use, the user can push the bending tube forward according to the need, and let go after pushing it to any angle in the middle. The upper tooth plate cannot continue to slide forward due to the action of the torsion spring for the return of the rotating shaft, and the lower tooth plate meshed with the upper tooth plate The tooth plate limits that the upper tooth plate can only move forward but not backward, so the upper tooth plate can neither move forward nor backward; when the angle is still inappropriate, you can continue to push forward, and every time you push a tooth, you can hear When you hear the "click" sound, push it to the end position, and then continue to push forward, the upper tooth plate will be separated from the lower tooth plate, and the "click" sound will not be heard. At this time, you can let go, and the bending tube will return to its position on the shaft Under the spring force of the torsion spring, the upper tooth plate is driven back to the initial state, and meshed with the lower tooth plate again.

The beneficial effect of the present invention is that the concept is novel, the design is ingenious, and any angle can be adjusted within a certain range, which meets the requirements of different passengers and improves the comfort of the headrest.

Description of drawings

Fig. 1 is an axonometric view one of the present invention.

Fig. 2 is the second isometric view of the present invention.

Figure 3 is the first axonometric view of the initial position.

Figure 4 is the second isometric view of the initial position (remove the outer panel).

Figure 5 is the first isometric view of the termination position (with the outer panel removed).

Figure 6 is the second isometric view of the termination position.

Figure 7 is the state where the upper tooth plate is separated from the lower tooth plate (the outer side plate is removed).

detailed description

Below by embodiment and in conjunction with accompanying drawing, the present invention will be further described:

As shown in Figure 1-Figure 4, a seat headrest tilting adjustable device mainly consists of two headrest rods 1, "n"-shaped bending tube 2, rotating shaft 3, side support plate 4, and limit bracket 5. Shaft return torsion spring 6, outer plate 7, support plate 8, lower tooth plate 9, upper tooth plate 10, lower tooth plate return spring 11, hanger pin 12, riveting pin 13, noise reduction net 14, etc. The front, back, left, and right orientations described below are all subject to the orientation during use.

The right end of bending pipe 2 is welded with side support plate 4, and the headrest bar 1 upper end of the right side is provided with the flattening part, and side support plate 4 and the headrest bar 1 flattening part of the right side are hinged on the right end of rotating shaft 3.

The left end of the bending tube 2 is welded with a limit bracket 5, and the headrest rod 1 upper end on the left side is first flattened and then welded with a support plate 8, and the limit bracket 5 and the support plate 8 are hinged on the left end of the rotating shaft 3. The limit bracket 5, the support plate 8 and the outer plate 7 are sequentially sleeved on the rotating shaft 3 from the inside to the outside, and the lower tooth plate 9 and the upper tooth plate 10 are installed in the gap between the limit bracket 5 and the outer plate 7.

The lower end of the lower tooth plate 9 is hinged with the support plate 8 , and the hinge point between the lower tooth plate 9 and the support plate 8 is located behind the rotating shaft 3 . The lower end of the lower tooth plate 9 is provided with a circular hinge 9a, and the support plate 8 is provided with a hinge notch 8a matching the circular hinge 9a, and the circular hinge 9a is placed in the hinge notch 8a, thus realizing the lower tooth plate 9 and the hinge of support plate 8.

The lower tooth plate 9 meshes with the upper tooth plate 10, and the thickness of the two is equal. The upper tooth plate 10 is located above the lower tooth plate 9, and the bottom of the upper tooth plate 10 is provided with meshing teeth, and the top of the lower tooth plate 9 is provided with meshing teeth. The meshing teeth are one-way teeth. After the lower tooth plate 9 meshes with the upper tooth plate 10, the upper tooth plate 10 can only be pushed forward relative to the lower tooth plate 9. A lower tooth plate return spring 11 is installed between the lower tooth plate 9 and the support plate 8 to make the lower tooth plate 9 return automatically. Preferably, the return spring 11 of the lower tooth plate is a torsion spring, but the torsion spring is less than one turn, and one end of the torsion spring is hung in the gap at the top of the support plate 8, and the other end of the torsion spring is hung on the front end of the lower tooth plate 9 In the bottom gap of the bottom, the lower tooth plate 9 can be reset only with a small force. The lower tooth plate return spring 11 is not limited to torsion springs, as long as other springs that can make the lower tooth plate 9 return smoothly can also be adopted.

The upper tooth plate 10, the outer plate 7, and the limit bracket 5 are riveted and fixed together by at least two riveting pins 13 arranged at horizontal intervals, and the rotation is prevented while being installed and fixed.

The inner side of the lower tooth plate 9 is provided with a horizontal guide column 9b. Preferably, the lower tooth plate 9 is a stamped plate, and the horizontal guide column 9b and the lower tooth plate 9 are integrally formed by stamping. Of course, the horizontal guide post 9b can also be arranged separately, and then welded on the inner side of the lower tooth plate 9 .

A guide window 5 a is opened on the limit bracket 5 , and a horizontal guide post 9 b is inserted into the guide window 5 a provided on the limit bracket 5 . The top of the guide window 5a is an arc surface. When the upper tooth plate 10 moves forward relative to the lower tooth plate 9, and when the upper tooth plate 10 and the lower tooth plate 9 are in a meshing state, the horizontal guide column 9b moves along the guide window 5a. The top arc gradually moves backwards. The height of the rear end of the guide window 5a gradually decreases to form a slope. When the upper tooth plate 10 moves to the end position, the horizontal guide column 9b is located at the junction of the top arc surface and the rear end slope in the guide window 5a. If it continues to push forward, Then make the horizontal guide column 9b continue to move backward along the rear end inclined surface, because the height of the rear end inclined surface gradually decreases, the lower tooth plate 9 sinks and separates from the upper tooth plate 10 .

A rotating shaft return torsion spring 6 is sleeved on the rotating shaft 3 . One end of the rotating shaft return torsion spring 6 is hung on the hanging pin 12 vertically arranged on the rotating shaft 3 , and the other end is hung on the front of the spacer bracket 5 . Preferably, a sound-absorbing net 14 is also covered outside the rotating shaft return torsion spring 6 .

Preferably, the hanging pin 12 is made of a scroll spring, and the rotating shaft 3 is provided with a hanging pin hole, and the scroll spring can be directly inserted into the hanging pin hole after wrapping tightly and can be installed and fixed. Certainly also can adopt common hanging pin, welding is fixed on the rotating shaft 3.

In addition, the outer plate 7 is a stamped plate, on which an arc-shaped rib 7a facing inward is punched, and the outer plate 7 is bonded to the lower tooth plate 9 through the arc-shaped rib 7a. The side support plate 4 and the spacer bracket 5 all adopt stamping plates, and the upper ends of the side support plate 4 and the spacer bracket 5 are half-wrapped on the corresponding bent pipe 2 through a “U”-shaped section.

In the initial state (as shown in FIG. 3 and FIG. 4 ), the upper tooth plate 10 and the lower tooth plate 9 mesh together, and the horizontal guide column 9b is located at the front end of the arc surface at the top of the guide window 5a.

Push the bending tube 2 forward, and the bending tube 2 drives the upper tooth plate 10 to move forward relative to the lower tooth plate 9. After each tooth is moved, the lower tooth plate 9 resets under the action of the lower tooth plate return spring 11, and then contacts with the lower tooth plate 9. The last tooth of the upper tooth plate 10 meshes, and every time a tooth is pushed, a "click" sound can be heard. The relative position with the lower tooth plate 9 is fixed, thereby realizing the adjustment of any angle. Push the bending pipe 2 forward until the horizontal guide column 9b is located at the rear end of the top arc surface of the guide window 5a (as shown in Figures 5 and 6), at this time the upper tooth plate 10 and the lower tooth plate 9 are still engaged together, It is the end position, which is also the critical state of the upper tooth plate 10 and the lower tooth plate 9 from meshing to separation.

If the bending pipe 2 continues to be pushed forward, the horizontal guide column 9b moves downward along the rear end slope in the guide window 5a (as shown in Figure 7). When the sound of "click" is heard, the applied external force is released, and the bending tube 2 automatically returns to the initial state under the action of the rotating shaft return torsion spring 6 .

Claims (4)

1. chair headrest verts a tunable arrangement, including two head rest poles (1), the bending tube (2) of " n " shape With rotating shaft (3), it is characterised in that: the right-hand member of described bending tube (2) is welded with collateral fagging (4), right The head rest pole (1) of side uses flattening portion and described collateral fagging (4) to be hinged on the right-hand member of rotating shaft (3), The left end of bending tube (2) is welded with limited support (5), and head rest pole (1) upper end in left side is by flattening Portion is welded with gripper shoe (8), and described limited support (5) and gripper shoe (8) are hinged on rotating shaft (3) Left end, and limited support (5), gripper shoe (8) and outer panel (7) the most successively be sleeved on turn On axle (3), described limited support (5) is provided with lower tooth plate (9) in the crack of outer panel (7) With upper tooth plate (10), the lower end of described lower tooth plate (9) is provided with circular articulated joint (9a), described support The hinged breach (8a) mated with circular articulated joint (9a), circular articulated joint (9a) it is provided with on plate (8) In being placed in hinged breach (8a), it is achieved thereby that lower tooth plate (9) and gripper shoe (8) is hinged, and The pin joint of lower tooth plate (9) and gripper shoe (8) is positioned at the rear of rotating shaft (3), lower tooth plate (9) with Upper tooth plate (10) engages, equipped with lower tooth plate return spring between lower tooth plate (9) and gripper shoe (8) (11), described upper tooth plate (10) and outer panel (7), limited support (5) are by being horizontally spaced about At least two rivet pin (13) riveting fixing, the inner side of described lower tooth plate (9) is provided with horizontally-guided Post (9b), horizontally-guided post (9b) inserts in the pilot notched (5a) offered on limited support (5), The top of described pilot notched (5a) is cambered surface, and the rear height of pilot notched (5a) is gradually lowered shape Become inclined-plane, described rotating shaft (3) is set with rotating shaft return torsion spring (6), described rotating shaft return torsion spring (6) One end hang over that rotating shaft (3) is upper the most vertically disposed hangs on pin (12), the other end hangs over limited support (5) Front；

During original state, upper tooth plate (10) meshes together with lower tooth plate (9), horizontally-guided post (9b) Being positioned at the front end of pilot notched (5a) top cambered surface, promote forward bending tube (2), bending tube (2) carries Dynamic upper tooth plate (10) lower tooth plate (9) relatively moves forward, after often moving a tooth, and lower tooth plate (9) Reset under the effect of lower tooth plate return spring (11), then engage with the later tooth of upper tooth plate (10), Until horizontally-guided post (9b) is positioned at the rear end of pilot notched (5a) top cambered surface, now go up tooth plate (10) Still mesh together with lower tooth plate (9)；Continue to promote forward bending tube (2), horizontally-guided post (9b) Moving down along inclined-plane, rear end in pilot notched (5a), upper tooth plate (10) departs from lower tooth plate (9), Bending tube (2) automatically returns to original state under the effect of rotating shaft return torsion spring (6).

2. vert tunable arrangement according to the chair headrest described in claim 1, it is characterised in that: under described Tooth plate return spring (11) is also torsion spring, but this torsion spring encloses less than one, and one end of this torsion spring hangs over support In the breach at plate (8) top, the other end of this torsion spring hangs in the bottom notch of lower tooth plate (9) front end.

3. vert tunable arrangement according to the chair headrest described in claim 2, it is characterised in that: described turn Axle return torsion spring (6) is covered with silencing net (14).

4. vert tunable arrangement according to the chair headrest described in claim 1, it is characterised in that: described extension Pin (12) uses scrollwork spring to make, and rotating shaft (3) is provided with extension pin-and-hole, and scrollwork spring is directly inserted after wrapping Can install fixing in entering to hang pin-and-hole.