Guiding device for a holding rod of a headrest and headrest arrangement with a headrest

Abstract

The invention relates to a guide device for a holding rod of a headrest, having a guide structure configured as a channel for guiding and supporting the holding rod, and a locking device comprising a locking element which can be moved between a locked position and a released position, the locking element cooperating with a locking structure of the holding rod in order to prevent relative movement of the holding rod with respect to the guide structure in at least one direction, the locking element engaging with the locking structure in the locked position and disengaging from the locking structure in the released position, the locking device having a locking-out device which can be moved between a locked-out position and a released position, the locking-out device having a locking-out structure which, in the locked-out position, is arranged in the movement path of the locking element such that movement from the locked position to the released position is not possible, and, in the released position, enables movement of the locking element into the released position. The invention also relates to a headrest device having a headrest, having a guide device.

Description

Technical Field

[0001] This invention first relates to a guiding device for a retaining rod of a headrest. This invention also relates to a headrest device having a headrest. Background Technology

[0002] This guiding device is known from prior public use. The guiding device has a channel for receiving a retaining rod. A locking device, comprising a locking member in the form of a box-shaped slider, is used. The locking member has a locking area arranged on the slider and is adjustable between a locked position and a released position. In the locked position, the locking member is arranged such that it can move to engage with a slot in a groove of the retaining rod. In the released position, the locking member disengages from the slot. The locking member is spring-loaded into the released position.

[0003] Under adverse force conditions acting on the guiding device, the locking element may unintentionally move from the locked position to the released position. This could happen, for example, in the event of an accident due to a strong acceleration force.

[0004] Then the retaining rod of the headrest supported in the guide device can no longer fulfill its safety function. Therefore, the locking mechanism of the guide device needs improvement. Summary of the Invention

[0005] The objective of this invention is to provide a guiding device whose guiding structure improves upon its locking mechanism. In particular, it is intended to prevent unintentional movement into the released position.

[0006] This task is solved by a guide device for a retaining rod of a headrest, the guide device having a guide structure that forms a channel for guiding and supporting the retaining rod, the guide device having a locking device including a locking member movable between a locked position and a released position, the locking member being configured to cooperate with a locking structure of the retaining rod to prevent relative movement of the retaining rod with respect to the guide structure about at least one direction, wherein, in the locked position of the locking device, the locking member is arranged to engage with the locking structure of the retaining rod supported in the guide structure, and in the released position, the locking member is arranged to disengage from the locking structure, the locking device having a locking mechanism movable between a locked position and a released position, the locking mechanism having a locking structure arranged in a movement track of the locking member in the locked position such that the locking member cannot move from the locked position to the released position, and in the released position, the locking member can move from the locked position to the released position.

[0007] A guide device is provided for guiding the retaining rod of the headrest. The guide device includes a guide structure. This guide structure may be configured as a sleeve, or alternatively, have individual guide devices, and is configured in such a way that a guide channel is adapted to guide and support the retaining rod.

[0008] The locking device of the guide includes at least one locking element movable between a locked position and a released position. The locking element is configured to cooperate with a locking structure of the retaining rod. At least one locking structure is constructed on the retaining rod. The at least one locking element and the locking structure can be any structure suitable for preventing movement of the retaining rod in at least one direction.

[0009] For example, a locking structure is a retaining rod structure having at least one locking surface arranged substantially perpendicular to the direction of movement of the retaining rod. The locking element may include, for example, a locking line or at least one surface adapted to cooperate with the locking structure to prevent relative movement of the retaining rod relative to the guide structure.

[0010] In the locked position of the locking device, the locking element is arranged to engage with the locking structure of the retaining rod, and in the released position, the locking element is arranged to disengage from the locking structure.

[0011] The locking device has a locking mechanism movable between a locked position and a disengaged position. This locking mechanism has a locking structure arranged in a movement track of the locking member in the locked position, making it impossible to disengage from the locking structure in the direction of the released position. In the disengaged position, the locking device moves out of the movement track. The locking member can then move to the released position or is already in the released position.

[0012] The advantage of the feature combination according to the invention is that the locking device will not unintentionally move into the released position. The locking member will not move out of engagement with the mating device due to forces acting, for example, in the event of an accident, overcoming the spring force. Therefore, the reliability of locking is significantly improved, and thus the security of the guide is significantly improved.

[0013] The locking element, for example, has a load-bearing area. In the context of this invention, a load-bearing area means that the locking element, for example, has both a locking area and a load-bearing area. For example, the structural assembly constructs the locking element and simultaneously has a support device for the locking element and, if necessary, a guide device. The load-bearing area can be a pivotable or translatably movable unit, particularly a component that carries the locking element. The locking element, for example, is fastened to a carrier. Alternatively, the locking element is constructed on the carrier. The locking element, for example, is formed integrally with the locking element.

[0014] The bearing area, for example, has a first guide device that cooperates with a second guide device of the guide structure to allow the locking member to move between a locked position and a released position. The locking member is guided by the second guide device, for example, in a drawer-like manner.

[0015] The locking structure cooperates with both the locking element and the support structure, wherein the support structure forms a support for forces acting on the locking structure, the forces pointing in the releasing direction of the locking element. In the locked position of the locking device, the locking structure is positioned within the movement track of the locking element. For example, a first surface of the locking structure cooperates with the locking element, and a second surface of the locking structure cooperates with the support structure.

[0016] At least one locking element is disposed, for example, on a pivotable element. For example, an element having a locking element is pivotally held on a guide structure. Alternatively, an elastic element, for example, is held on the guide structure using a free locking region, wherein the free locking region constitutes the locking element. Alternatively, the locking element may also be fastened to the free locking region.

[0017] Locking elements can alternatively be provided, for example, to translationally movable elements. For example, the locking element may be constructed or fastened to a sliding element. For example, a deformable element that carries or constructs the locking element may also be movably guided between two positions on a track.

[0018] The locking device, for example, has an actuating mechanism movable between an unoperated position and an operated position, by means of which the locking device can be adjusted between the locked position and the released position. For example, at least one spring element is provided, which loads the locking device back into the locked position. As long as there is a motional coupling between the locking device and the actuating mechanism, the actuating mechanism can also have a spring element that loads the actuating mechanism into the unoperated position and the locking device into the released position. The locking device is then automatically reset to the locked position.

[0019] The locking mechanism may be arranged, for example, between the outer surface of the locking element and the surface of the receiving portion of the vehicle structure. The guiding device is typically secured in the receiving portion of the vehicle structure, particularly the seat structure. This receiving portion provides a surface from which a support structure for the locking mechanism can be formed.

[0020] The locking structure is arranged, for example, between the outer surface of the locking member and the guide structure. In this case, the support structure is formed by the guide structure. When a force is applied to the locking member toward the released position, the surface of the guide prevents the locking structure from moving in the direction of movement of the locking member.

[0021] The locking structure can, for example, be composed of a grooved component, in which the locking element's plug is engaged in the groove and guided by the groove's arch, such that the locking element is prevented from undesirably moving out of the set position in the locked position. The central axis of the groove extends, for example, perpendicular to the direction of movement of the locking element, in the region where the locking element's plug is arranged in the locked position. In this way, the force applied to the locking element toward the released position can be received by the groove's arch. The grooved component is guided, for example, by a guide structure that simultaneously forms a support, preventing the grooved component from moving along the direction of movement of the locking element.

[0022] A locking structure is provided, for example, with an adjusting member. Using the adjusting member, which is part of the adjusting device, the locking structure can move between a locked position and a disengaged position. The adjusting device can be constructed separately from the operating device and, for example, movably connected to the operating device such that the locking structure is moved to the disengaged position simultaneously or sequentially, and the locking member is moved to the released position. In certain cases, it is necessary to first adjust the locking structure to the disengaged position and then move the locking member to the released position. In the case of motion coupling, for example, when the operating device is operated, the adjusting device moves to the disengaged position simultaneously or ahead of time. Motion coupling occurs, for example, by means of a connection between the operating device and the adjusting device, or in the case of constructing a carrying element.

[0023] According to the alternative implementation plan, the operating device also constitutes the regulating device.

[0024] For example, the operating device has an operating component that is configured as a slide. The slide may, for example, be guided parallel to the longitudinal axis of the retaining rod. The slide may, for example, be guided on a guide structure.

[0025] For example, the operating component can move approximately perpendicular to the direction of movement of the locking component.

[0026] The locking element is, for example, constructed as a ring with a recess through which a retaining rod can pass. The ring can be, for example, completely closed or alternatively, merely U-shaped in one area. The outer surface of the locking element has, for example, a rectangular shape. This allows for advantageous guidance of the carrier. The locking element is, for example, arranged on the arch of the recess. For example, the locking element is formed by the arch of the recess of the carrier. The recess is, for example, constructed such that the carrier can move between a locked position and a released position. For example, the recess is constructed as an elongated hole.

[0027] The locking structure, for example, is movable into the recess and engages with the outer surface of the retaining rod and the arch of the recess. When the locking structure is positioned in the recess, the locking device is in the locked position. If the locking structure moves out of the recess, the locking device is in the disengaged position. The movement of the locking structure is, for example, perpendicular to the direction of movement of the locking element.

[0028] According to a second aspect, the present invention relates to a headrest device.

[0029] Such a headrest device is known from the prior art described above. Refer to the description of the prior art above.

[0030] The objective of this invention is to provide a headrest device that offers enhanced security in its guiding mechanism to prevent accidental unlocking.

[0031] This task is also accomplished by a headrest device having a headrest, the headrest device including a head component and a retaining device having at least one retaining rod, wherein the retaining rod is supported in a guide device configured as a guide device according to the invention.

[0032] The headrest device according to the invention includes a headrest having a head member that forms a head resting surface, and a retaining device having at least one retaining rod for supporting the head member. The retaining rod may be configured as an arcuate member. Alternatively, the retaining device may include one or two separate retaining rods.

[0033] The retaining rod is supported in the guiding device. The guiding device is supported on the vehicle structure, particularly on the seat structure of the vehicle seat. In the context of this invention, the vehicle seat refers to the seat of a land vehicle, air vehicle, or water vehicle. The guiding device is constructed according to the first aspect of the invention. To avoid repetition, reference is made to the explanation of the first aspect of the invention regarding advantages.

[0034] Embodiments of the invention are described exemplarily with reference to the accompanying drawings in the following description. Here, for clarity (wherever different embodiments are involved), the same or similar parts, elements, or areas are indicated by the same reference numerals, partially with lowercase letters.

[0035] Within the scope of this invention, features described, shown, or disclosed only with respect to one embodiment may also be provided in each other embodiment of the invention. Such modified embodiments (although not shown in the drawings) are included together with the present invention.

[0036] All disclosed features are essential to this invention. The disclosure herein also fully includes the disclosures of cited documents and described prior art devices, and is intended to encompass one or more features of the subject matter disclosed therein in one or more solutions of this application. Modified embodiments (although not shown in the drawings) are also included in this invention. Attached Figure Description

[0037] It is shown that:

[0038] Figure 1 The image shows a headrest device on the back of a vehicle seat.

[0039] Figure 2 Showing according to Figure 1 The cross-sectional view of the section line AA in the diagram.

[0040] Figure 3 A side view of the backrest with headrest is shown.

[0041] Figure 4 Showing according to Figure 3 The cross-sectional view of the section line BB in the diagram.

[0042] Figure 5 Showing according to Figure 4 The cross-sectional view of the section line EE in the diagram.

[0043] Figure 6 This is a view of the headrest assembly from the first side, where the head unit is not shown.

[0044] Figure 7 This is a view of the headrest assembly viewed from a second side opposite the first side, wherein the headrest element is not shown.

[0045] Figure 8 Showing according to Figure 7 The view with arrow I in the view,

[0046] Figure 9 Showing according to Figure 8 The cross-sectional view of the section line CC in the diagram.

[0047] Figure 10 Showing according to Figure 9 The cross-sectional view of the section line FF in the diagram.

[0048] Figure 11 Provided by Figure 6 The headrest device, wherein the operating device is in the operating position,

[0049] Figure 12 Provided by Figure 7 The headrest device, wherein the operating device is in the inactive position.

[0050] Figure 13 Showing according to Figure 12 The view with arrow J in the view,

[0051] Figure 14 Showing according to Figure 13 The cross-sectional view of the section line DD in the diagram.

[0052] Figure 15 shows the following according to Figure 14 Sectional view of section line GG in the middle

[0053] Figure 16 shows the following according to Figure 14 The cross-sectional view of the section line HH in the diagram.

[0054] Figure 17 Provided by Figure 10 A cross-sectional view of the second embodiment.

[0055] Figure 18 Provided by Figure 10 A cross-sectional view of the third embodiment.

[0056] Figure 19 A side view of the headrest device according to the fourth embodiment is shown, wherein the head component is not shown and the locking device is arranged in the locked position.

[0057] Figure 20 A side view of a headrest device according to a fourth embodiment is shown, wherein the head component is not shown and the locking device is arranged in the released position. Detailed Implementation

[0058] The headrest device as a whole is indicated by reference numeral 10 in the figure.

[0059] according to Figures 1 to 4 The headrest device 10 includes a headrest 11 having a head component 12 and retaining rods 13a and 13b. The retaining rods 13a and 13b can be a single retaining rod or the free end of a retaining rod bow. The retaining rods 13a and 13b are supported in a guide device 14 and can be locked in a predetermined position using a locking device 20. Figure 1 and Figure 2 The headrest device 10 is supported on the backrest 55 of the vehicle seat.

[0060] Since the two retaining rods 13a and 13b are supported in the same way, the support and locking of retaining rod 13b will be described below.

[0061] Locking device 20 according to Figure 4 and Figure 5 Includes a locking member 17. In this embodiment, the locking member 17 includes a locking region 18 and a bearing region 21. The locking member 17 has a recess 19. Furthermore, the locking member 17 has a guide surface 22 that slidably engages with a mating surface 23, so that the locking member 27, according to… Figure 5 The device moves between the locked position and the released position according to Figure 15. The mating surface 23 is constructed at the guide structure 15 of the guide device 14. The spring 24 loads the locking member 17 into the locked position.

[0062] In the locked location (see example) Figure 5 , Figure 9 and Figure 10The retaining rod 13b is immovable with respect to directions z1 and z2. The locking member 17 engages with the locking structure 25 of the retaining rod, which has opposing locking surfaces 33 extending perpendicular to the directions of movement z1 and z2. In the released position, the locking member 17 disengages from the locking structure 25. The retaining rod 13a can then move in directions z1 and z2.

[0063] Locking device 30 includes locking element 26 (see...) Figure 9 The locking element can move between a locked position and a released position. In the locked position of the locking device 30, the locking element 26 is arranged in the movement track of the locking member 17, thus preventing the locking member 17 from moving from the locked position along direction y1 to the released position. The locking element 26 contacts the outer surface 34 of the arched portion 19 of the locking member 17 via a first surface 27, and the locking element 26 contacts the outer surface 29 of the retaining rod 13b via a second surface 28 arranged opposite to the first surface 27, which forms a support structure for the locking element 26. Therefore, when a force is applied to the locking member 17 to put it into the released position, the locking member 17 cannot move out of the locked position.

[0064] The locking device 30 is movably connected to the locking device 20 such that when the locking device 20 is in the locked position, the locking device 30 is arranged in the locked position and when the locking device 20 is in the released position, the locking device 30 is arranged in the disengaged position.

[0065] The motion connection is performed, for example, in a staggered manner, such that when the locking device 20 moves to the released position, the locking structure 26 is first moved to the disengaged position and then the locking member 17 moves from engagement with the mating device to the released position.

[0066] The locking device 20 includes an actuating device 40 for moving the locking device 20 between a locked position and an unlocked position. The actuating device 40 has an operating element 31 by means of which the actuating device 40 can be adjusted by a user. In this embodiment, the operating element 31 is the pad 16 of the guide device 14. Alternatively, but equally possible, a separate operating element 31 may be provided on the guide device 14.

[0067] The pad 16 includes a recess 48 having a sliding surface 50, which contacts the guide surface 49 of the guide structure 15. The pad 16 is positioned in this manner... Figure 9 The unmanipulated position shown in the figure and Figure 14 The manipulated positions shown in the figure are movable.

[0068] In addition, the control device 40 has a control element 32 (see Figures 6 to 8The actuating element operates the locking device 30 and the locking device 20 when the actuating element 31 is operated. Alternatively, it is also possible to provide separate actuating elements for operating the locking device 30 and the locking device 20. The pad 16 is connected to the actuating element 32, so that when the pad 16 moves in the direction z2, the actuating element 32 also moves in the direction z2. Since the locking structure 26 is held on the actuating element 32, the locking structure 26 also moves in the direction z2.

[0069] In this embodiment, the actuating element 32 is configured as a plate-shaped slider, the slider being, for example, in... Figures 6 to 8 As can be clearly seen, the control element 32 can move in directions z1 and z2. The control element has a structure with an elongated hole 51 on its opposite side, into which the protrusion 52 of the guide structure 15 is fitted, so as to restrict the movement of the control element 32 in directions z1 and z2 in this way.

[0070] according to Figure 8 and Figure 9 The locking device is in the locked position. The locking member 17 is engaged with the locking structure 25. The locking device 30 is arranged in the locked position, wherein the locking structure 26 is positioned in the movement track of the locking member 17, which is capable of moving in directions y1 and y2.

[0071] according to Figure 10 It is evident that in the locked position of the locking device 30, the locking member 17 cannot be unintentionally moved to the released position along the direction y1.

[0072] If the operating element 31 is now manipulated in direction z2, the operating element 32 also moves in direction z2. The operating element 32 is connected to the locking element 26 and causes the locking element 26 to move out of the movement track of the locking member 17 in direction z2. An operating structure (not shown) is constructed offset on the operating element 32 in direction z1. After the locking device 30 is in the disengaged position, this operating structure, by means of a cooperating ramp, causes the locking member 17 to move against the spring force of the spring 24 in direction y1 and disengage from the locking structure 25 (see [link to relevant documentation]). Figures 14 to 1 6). Then, the retaining rod 13b can be removed from the guide structure 15.

[0073] The retaining rod 13b can be installed by inserting it through the opening 53 of the pad 16 into the guide channel 54 of the guide structure 15. The operating element 31 is actuated, causing the locking device 20 to move to the released position and the locking device 30 to the disengaged position. As long as the locking structure 25 of the retaining rod 13b is in the same z-position as the locking member 17, the locking member can be moved by the spring 24 to engage with the locking structure 25 of the retaining rod 13b after the operating element 31 is unloaded. The operating element 31 is loaded along the z1 direction by a spring (not shown). Therefore, the operating element moves in the z1 direction after unloading, and here also causes the operating element 32 to move in the z1 direction. Here, the locking device 30 moves back to the locked position.

[0074] exist Figure 17 In China, according to Figure 10 A second embodiment is shown, which differs from the first embodiment only in that the first surface 27 of the locking element 26 contacts the outer surface 34 of the locking member 17 in the locked position, and the opposing second surface 28 contacts the wall 35 of the guide structure 15, which forms a support structure. Furthermore, the actuating element 32 must perform a pulling motion to move the locking member 17 from the locked position to the released position, which can also be achieved through the inclined surfaces of the actuating element 32 and the locking member 17 working together.

[0075] Figure 18 A third embodiment is shown. This third embodiment is related to... Figure 17 The difference in the embodiment is that, in the locked position, the first surface 27 of the locking element 26 contacts the outer surface 34 of the locking member 17 and the opposite second surface 28 contacts the wall 36 of the receiving portion 37 of the seat structure.

[0076] exist Figure 19 and Figure 20 The fourth embodiment is shown. The slide member 38, having a slide groove 39, can move along directions z1 and z2 via the operating element 31 and the manipulating element 32. The slide member 38 has support surfaces 41 that engage with the guide surfaces 42 of the support structure 43 arranged on the guide structure 15. Therefore, the slide member 38 only has degrees of freedom in directions z1 and z2. The motion unit consisting of the operating element 31, the manipulating element 32, and the slide member 38 is loaded into an unoperated position along direction z1 by a spring 44.

[0077] The plug 45 is connected to the locking element 17, and the plug is engaged in the groove 39. When the plug 45 is in the locked position, it is located in the lower region 46 of the groove 39 (see...). Figure 19When the locking member 17 is engaged with the locking structure 25 of the retaining rod 13b, the lower region 46 is oriented approximately parallel to the z-axis. In this position of the slide member 38, the locking member 17 cannot move in the y2 direction because the arch of the slide 39 prevents the plug 45 from moving in the y2 direction. The slide member 38 transmits the force acting in the y1 direction to the guide surface 42 of the support structure 43.

[0078] If based on Figure 20 When the plug 45 is in the upper region 47, the locking member 17 moves out of engagement with the locking structure 25. The longitudinal center axis of the slide 39 forms an angle ≠ 0 with the Z-axis in the upper region 47.

[0079] In all four embodiments, the direction of movement of the locking member 17 is different from the direction of movement of the locking element 26. In this case, a right angle is formed between the directions of movement of the locking member 17 and the locking element 26. Alternatively, the directions of movement can be different from each other.

Claims

1. A guide device for a retaining rod of a headrest, the guide device having a guide structure forming a channel for guiding and supporting the retaining rod, the guide device having a locking device (20) comprising a locking member movable between a locked position and a released position, the locking member being configured to cooperate with a locking structure (25) of the retaining rod (13a, 13b) to prevent relative movement of the retaining rod (13a, 13b) with respect to the guide structure (15) about at least one direction (z1, z2), wherein, In the locked position of the locking device (20), the locking member (17) is arranged to engage with the locking structure (25) of the retaining rod (13a, 13b) supported in the guide structure (15), and in the released position, the locking member (17) is arranged to disengage from the locking structure (25). The locking device (20) is characterized by having a locking device (30) movable between the locked position and the released position, the locking device having a locking structure (26) arranged in the movement track of the locking member (17) in the locked position such that the locking member (17) cannot move from the locked position to the released position, and in the released position, the locking member (17) can move from the locked position to the released position.

2. The guiding device according to claim 1, characterized in that, The locking element has a locking area (18) and a bearing area (21).

3. The guiding device according to claim 1 or 2, characterized in that, The locking structure (26) works in conjunction with the locking element (17) and the support structure.

4. The guiding device according to claim 1 or 2, characterized in that, The locking element (17) can be adjusted between a locked position and an unlocked position by means of a control device (40).

5. The guiding device according to claim 1 or 2, characterized in that, The locking element (17) is configured as a pivotable lever or as a translational element.

6. The guiding device according to claim 1 or 2, characterized in that, The locking structure (26) and the locking element (17) are guided on motion tracks, each of which forms a non-zero angle with respect to the other.

7. The guiding device according to claim 6, characterized in that, The described motion trajectories are perpendicular to each other.

8. The guiding device according to claim 1 or 2, characterized in that, The locking structure is arranged on the seat structure using the outer surface (34) of the locking member (17) and using a support structure in the form of a receiving portion (37) for fastening the guide structure (15).

9. The guiding device according to claim 1 or 2, characterized in that, The locking structure (26) is arranged between the outer surface (34) of the locking member (17) and the guide structure (15), the guide structure forming a support structure.

10. The guiding device according to claim 1 or 2, characterized in that, The locking structure (26) is composed of a groove component (38) having a groove (39), wherein the plug of the locking member (17) is engaged in the groove and guided by the arch of the groove (39) so that the locking member (17) cannot be unintentionally moved out of the set position in the locked position.

11. The guiding device according to claim 1, characterized in that, An operating device (40) is provided for adjusting the locking device (20) between a locked position and a released position.

12. The guiding device according to claim 11, characterized in that, The operating device (40) also has a means for adjusting the locking device (30) between the locked position and the disengaged position.

13. The guiding device according to claim 11 or 12, characterized in that, The control device includes a control component, which is configured as a slide.

14. The guiding device according to claim 1 or 2, characterized in that, The locking element (17) is constructed as a ring and has a recess (19) through which the retaining rod (13a, 13b) can pass.

15. The guiding device according to claim 14, characterized in that, The locking structure (26) is arranged in the recess (19) in the locked position and engages with the outer surface (29) of the retaining rod (13a, 13b) and the arch of the recess (19).

16. A headrest device (10) having a headrest (11), the headrest device comprising a head part (12) and a retaining device having at least one retaining rod (13a, 13b), wherein, The retaining rods (13a, 13b) are supported in the guide device (14), characterized in that the guide device (14) is configured as the guide device according to any one of claims 1 to 15.

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