Vehicle seat with locking element
The segmented design, which utilizes a joystick and locking elements in cooperation, solves the problem of unintentional movement of the vehicle seat when it is in an easy-to-access position, achieving stability and safety control of the seat, simplifying the structure and preventing misuse.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BROSE FAHRZEUGTEILE GMBH & CO KG
- Filing Date
- 2021-02-19
- Publication Date
- 2026-07-14
AI Technical Summary
Existing vehicle seats are prone to unintentional movement when in a convenient access position, which can lead to occupants being trapped or parts being damaged, and the control structure is complex.
The segmented design, which combines a joystick and a locking element, uses a rotatable locking device to control the longitudinal adjustment mechanism, ensuring the stability and safety of the seat in its functional position.
It simplifies the control of vehicle seats, avoids unintentional misuse, improves seat stability and safety, and prevents occupants from being trapped and parts from being damaged.
Smart Images
Figure CN116829407B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a vehicle seat. Background Technology
[0002] This vehicle seat includes: a seat portion having seat portion elements; a base including a first guide rail; a longitudinal adjustment device formed by at least the first guide rail and a second guide rail, the first and second guide rails being longitudinally adjustable relative to each other; and a lever through which the seat portion elements are movably connected to the base relative to the base.
[0003] Such a vehicle seat is described in DE 10 2019 101 551 A1. In this vehicle seat, a lock is mounted on a lever to lock the vehicle seat in a usable, occupant position. The lock can be released to move the vehicle seat to an easy-entry position, which serves as a functional position. In the easy-entry position, the seat portion and backrest move forward to facilitate passenger access to the row of vehicle seats behind the vehicle seat.
[0004] Vehicle seats, as described above, are typically prone to unintentional misuse. For example, when a vehicle with a seat is parked on a steep street, the seat may tend to move from an easy-access position back to a usable position, posing a risk of occupant entrapment. When the vehicle seat is adjustable and / or can be moved to more than one functional position (such as an easy-access position and a fold-down position), there is a risk that the user may activate another function while the seat is in one functional position. Depending on the vehicle seat's structure, this could again lead to the risk of entrapment and / or damage to vehicle seat components. Typically, corresponding countermeasures require complex construction. Summary of the Invention
[0005] The purpose of this invention is to provide an improved vehicle seat.
[0006] This objective is achieved through vehicle seats with the following characteristics.
[0007] The specification stipulates that the joystick has segments suitable for cooperating with a locking element, wherein the locking element is rotatably mounted on a base, is configured to operate the locking device of the longitudinal adjustment device to unlock the first guide rail relative to the second guide rail, and is configured to engage with a latch to restrict the movement of the first guide rail relative to the second guide rail.
[0008] This allows for improved control of the vehicle seat with a particularly simple structure. In turn, this allows for mitigation of the potential effects of misuse of the vehicle seat. Furthermore, it provides the additional benefit of the joystick. The joystick itself can control the movement of components of the vehicle seat. This also allows for the prevention of accidental misuse of the vehicle seat, and in particular, the prevention of unintentional movement of the vehicle seat or its components. The first guide rail can be an upper guide rail, and the second guide rail can be a lower guide rail. For example, at least some seat components are supported on the base by means of the joystick, and when an occupant occupies the vehicle seat in a usable seating position, the occupant's weight is transmitted via the seat components to the joystick and from the joystick to the base.
[0009] The vehicle seat includes a kinematic arrangement that includes a joystick. The vehicle seat can be configured via the kinematic arrangement into at least one commutable use position and at least one functional position. This allows for flexible use of the vehicle seat. Optionally, the kinematic arrangement includes a four-bar linkage. The four-bar linkage may include a base, a joystick, another joystick, and a seat portion. The four-bar linkage offers very high stability and can precisely define the kinematics of the seat portion.
[0010] The segment of the joystick may be adapted to cooperate with a locking element in the at least one functional position and may be spaced apart from the locking element in the at least one rideable use position.
[0011] For example, the at least one functional position includes a convenient access position and / or a folded-down position. Vehicle seats define a designed seating position, in which an occupant occupying the vehicle seat in that designed position appears to have a front and a rear. For example, the backrest of the vehicle seat is arranged at the rear or rear side of the vehicle seat, allowing the occupant to lean back against the backrest. Many vehicles include more than one row of vehicle seats, such as two or three rows. Some vehicles have two (or three) rows of vehicle seats, but only one (or two) doors on each side. To facilitate occupant access to the row of vehicle seats following the row with the vehicle seats described herein, the vehicle seat, or at least a portion thereof, can be moved forward in the convenient access position, and thus the vehicle seat is configured to be forward-facing in the convenient access position. Because the kinematic arrangement supports the seat portion, the seat portion moves forward and can provide particularly comfortable access to the next row.
[0012] For example, starting from a seated position, rotation of the kinematically arranged lever can first unlock the locking mechanism of the longitudinal adjustment device through the cooperation of the lever segments and the locking element, and then move the locking element into the locked position for engagement with the latch. The longitudinal adjustment device allows the vehicle seat to be longitudinally adjusted in the seated position and / or allows longitudinal displacement to present an easy entry position. This multi-stage movement can be achieved after unlocking only one lock (e.g., a lock that releasably locks a portion of the seat to the upper rail).
[0013] It can be specified that, by longitudinally adjusting the first guide rail relative to the second guide rail, the locking element (in the locked position) can engage behind the latch to lock the first guide rail relative to the second guide rail. This allows for particularly simple use.
[0014] The locking element and latch can be arranged to lock the first guide rail relative to the second guide rail at the forward end position of the first guide rail relative to the second guide rail. This allows the vehicle seat to be secured in a position that allows easy access and allows for improved anti-pinch protection to prevent, for example, the feet of a user behind the vehicle seat from being trapped.
[0015] For example, the latch is rotatably mounted on or at the second guide rail, for example, to facilitate smooth locking. For example, the latch is rotatably mounted on a portion fixed to and / or relative to the second guide rail.
[0016] The locking device of the longitudinal adjustment device can be movable relative to the latch (e.g., translational movement). For example, the locking device is mounted on a first guide rail, and the distance between the locking device and the latch can be adjustable, for example, by moving the first guide rail relative to a second guide rail.
[0017] The locking element can be rotatable relative to the base to a locked position for engaging with the latch (e.g., in the easy access position) and rotatable relative to the base to a released position to disengage from the latch. This allows the vehicle seat to be releasably secured in the easy access position. Therefore, to move the vehicle seat to the easy access position, the seat portion can be rotated forward using the aforementioned kinematic arrangement and then moved longitudinally forward until it is locked by the locking element and the latch.
[0018] The locking element can be configured to operate the locking device of the longitudinal adjustment mechanism via a rotatable rocker arm. The locking element and the rocker arm can be rotatable about the same pivot axis. The locking element may include a slot that engages with a pin on the rocker arm. The rocker arm can be rotated by the locking element and / or by a manual release lever.
[0019] Alternatively, the latch can be pre-tensioned via a spring, for example, pre-tensioned to the locked position. This allows for easy engagement with a locking element.
[0020] The segment of the joystick can be adapted to cooperate with the locking element by rotating it against the spring force. This allows ensuring that the locking element will not unlock the first rail relative to the second rail when no external force is applied. Attached Figure Description
[0021] The foregoing and other advantages of this solution will be apparent to those skilled in the art in light of the following description and figures. Wherein:
[0022] Figure 1 The seat portion of the vehicle seat is shown in its folded-flat position.
[0023] Figure 2 The seat portion of the vehicle seat is shown in an easy-access position.
[0024] Figure 3 A perspective view of the seat portion of a vehicle seat in an easy-access position is shown.
[0025] Figures 4A-4E This illustrates the various stages of the kinematic arrangement of the vehicle seat's levers and locking mechanism during the transition from a seating position to an easy-access position; and
[0026] Figure 5 A rear view of the vehicle seat in an easy-access position is shown. Detailed Implementation
[0027] Figure 1 This is a cross-sectional view of vehicle seat 1, showing the interior left side of vehicle seat 1. Vehicle seat 1 also includes a corresponding right side, which may include, for example, a portion that is the same as or a mirror image of the left side.
[0028] Generally, the vehicle seat 1 includes a seat portion 10 on which an occupant can sit, a base 11 supporting the seat portion 10, and a kinematic arrangement 12 movably connecting the seat portion 10 to the base 11. The vehicle seat 1 further includes a longitudinal adjustment device 13 that allows the seat portion 10 to move longitudinally relative to the vehicle floor VF. The vehicle seat 1 can be mounted on the vehicle floor VF via the longitudinal adjustment device 13.
[0029] The vehicle seat 1 further includes a lock 14 and a backrest 15, the lock 14 locking the seat portion 10 to the longitudinal adjustment device 13 in a releasable manner, and the backrest 15... Figure 1 Not shown in the text butFigure 5 As can be seen. A pair of recliners 16 (see...) Figure 5 The seat portion 10 is connected to the backrest 15, allowing adjustment of the tilt of the backrest 15 relative to the seat portion 10. The backrest 15 is mounted on the seat portion 10. Therefore, movement of the seat portion 10 relative to the vehicle floor VF also causes movement of the backrest 15 relative to the vehicle floor VF.
[0030] The vehicle seat 1 can be adjusted to present one of multiple positions. In particular, the vehicle seat 1 can be configured into multiple usable seating positions. Figure 1 A seating position SU is shown in dashed lines. In this seating position SU, an occupant can sit in the vehicle seat 1; that is, this seating position SU is designed for sitting. Different seating positions SU may differ from each other due to factors such as the inclination of the backrest 15 relative to the seat portion 10, the longitudinal adjustment position via the longitudinal adjustment device 13, etc.
[0031] Furthermore, vehicle seat 1 can be configured in an easy-access position EE. In this example, the vehicle seat can be configured in one of two functional positions, namely... Figure 1 The folded and flattened position FF is shown in solid line in the middle, and Figure 2 The convenient access position EE is shown in the diagram. In other words, the vehicle seat 1 offers both a fold-flat function and convenient access. However, it should be noted that the fold-flat function is optional.
[0032] Below, the main references are as follows: Figure 1 Describe the optional fold-flattening function, and then refer to... Figure 2 and Figures 4A-4E Describe the convenient access function.
[0033] The seat portion 10 of the vehicle seat 1 includes two seat portion elements 100 (one on each side, one of which is in...) Figure 1 (as shown in the image) and seat plate 101. Figure 1The following description of the visible seat component 100 corresponds to another seat component of the vehicle seat 1, and also applies to the components of the kinematic arrangement 12. Each seat component 100 is supported on the base 11 by two levers of the kinematic arrangement 12, which, for ease of reference, are referred to as the first access lever 120 and the second access lever 121. The first access lever 120 is positioned in front of the second (rear) access lever 121. The first access lever 120 is pivotally mounted on the base 11 via pivot axis A1. The seat component 100 is pivotally mounted on the first access lever 120 via pivot axis A2. The second access lever 121 is pivotally mounted on the base 11 via pivot axis A3. The seat component 100 is pivotally mounted on the second access lever 121 via pivot axis A4.
[0034] The base 11, the access levers 120 and 121, and the seat components 100 together form a four-bar linkage. Each of the access levers 120 and 121 is formed as a single piece.
[0035] Seat plate 101 includes two side portions 104 ( Figure 1 One of them is shown in the figure. The two side portions 104 are connected to each other by several crossbars 102, 103. The seat plate 101 is adapted to support the seat cushion. The seat plate 101 is supported by the seat component element 100. In the front portion, the seat plate 101 is movably connected to the seat component element 100 by a lever (hereinafter referred to as the folding lever 122) of the kinematic arrangement 12. The folding lever 122 is pivotally connected to the seat component element 100 via a pivot axis A5 and pivotally connected to the seat plate 101 via another pivot axis A6. At the rear end, the seat plate 101 includes arms 105 (on each of the left and right sides). The arms 105 are pivotally connected to the backrest 15 and spaced apart from the tilt axis (above) of the tilt adjuster 16 (see figure). Figure 5 Therefore, folding the backrest 15 forward (backward) causes the folding lever 122 to pivot forward (backward). As a result, when the backrest 15 folds forward, the seat plate 101 moves forward and lowers to... Figure 1 The folded-flat position FF is shown. This allows the backrest 15 to be folded into a horizontal or near-horizontal arrangement, for example, to be used as a table and / or to increase cargo space.
[0036] Lock 14 is locked in the seated position SU and the folded-flat position FF.
[0037] The folding function can be activated in the seat position SU by folding the backrest 15 onto the seat portion 10, for example by releasing the tilt adjuster 16 and manually folding the backrest 15, or by using an actuation device.
[0038] The longitudinal adjustment device 13 includes an upper guide rail 130 and a lower guide rail 131. The upper guide rail 130 is guided longitudinally on the lower guide rail 131. A base 11 is fixed to the upper guide rail 130 (or alternatively, the upper guide rail 130 serves as the base 11). The lower guide rail 131 is fixed to the vehicle floor VF.
[0039] Figure 2 and Figure 3 The vehicle seat is shown in the easy-access position EE. Lock 14 is released, i.e., hook 140 mounted on seat portion element 100 disengages from pin 141 mounted on upper guide rail 130 of longitudinal adjustment device 13. This allows seat portion 10 (and backrest 15) to move relative to base 11 via kinematic arrangement 12. Starting from the décor position SU, after releasing lock 14, seat portion 10 and backrest 15 can move forward, wherein easy-access levers 120, 121 pivot forward on base 11 about their pivot axes A1, A3. Therefore, not only does backrest 15 fold forward, but seat portion also moves forward to allow particularly easy access to the row of seats behind vehicle seat 1.
[0040] In the rideable position SU, the convenient access function is activated by unlocking the lock 14.
[0041] Now go to Figures 4A to 4E The details of the second convenient access lever 121 will be described.
[0042] It is worth noting that the second convenient access lever 121 has a segment 125 adapted to cooperate with the locking element 132 described below, wherein the locking element 132: (a) is rotatably mounted on the base 11; (b) is configured to operate the locking device 134 of the longitudinal adjustment device 13 to unlock the upper rail 130 relative to the lower rail 131; and (c) is configured to engage with the latch 138 to limit (e.g., block) the movement of the upper rail 130 relative to the lower rail 131.
[0043] A segment 125 of the second access lever 121 protrudes laterally from the rest of the second access lever 121. Specifically, the segment 125 protrudes between the pivot axes A3 and A4 of the second access lever 121. The segment 125 is arranged to be closer to the pivot axis A3 of the second access lever 121 at the base 11 than to the pivot axis A4 of the second access lever 121 near the seat portion element 100.
[0044] Locking element 132 is pivotally mounted on upper guide rail 130 via pivot axis A7. Rocker arm 136 is also pivotally mounted on upper guide rail 130 at pivot axis A7. Rocker arm 136 engages with bolt 135, which is guided in a slot in upper guide rail 130. Bolt 135 is secured to locking device 134, which releasably locks upper guide rail 130 to lower guide rail 131. In the locked position, teeth of locking device 134 engage with holes in lower guide rail 131. In the unlocked position, the teeth are removed from the holes. By rotating rocker arm 136, bolt 135 can be raised or lowered to unlock or lock locking device 134, respectively. A manual handle or release lever (which may be referred to as a towel bar) may be adapted to rotate the rocker arm for longitudinal adjustment of vehicle seat 1.
[0045] The pin of the rocker arm 136 engages a slot in the locking element 132, allowing the rocker arm 136 to rotate from the locked position to the unlocked position without rotating the locking element 132. On the other hand, when the locking element 132 rotates from the locked position to the unlocked position, the end of the slot collides with the pin, and the rocker arm 136 rotates together with the locking element 132 from the locked position to the unlocked position.
[0046] Spring 137B pretensions locking element 132 to the locked position.
[0047] Figure 4A The usable seating position SU is shown. Figure 4B The middle position is shown, and Figures 4C to 4E The convenient access positions of the seat portion 10 relative to the base 11 are shown at different longitudinal positions of the upper guide rail 130 relative to the lower guide rail 131.
[0048] When the vehicle seat 1 is switched from the usable seating position SU to the easy access position EE, after the lock 14 is unlocked and the easy access levers 120 and 121 are rotated forward, segment 125 of the second easy access lever 121 contacts the locking element 132. (See attached image) Figure 4B To provide an enlarged contact surface, the locking element 132 includes a flange 133A that contacts the segment 125 of the second easy-access lever 121 (see, in particular). Figure 3 ).
[0049] By moving the levers 120 and 121 further forward, the second convenient access lever 121 presses the locking element 132 (overcoming the force of the spring 137B) on segment 125, thereby raising the bolt 135 located in its slot and releasing the locking device 134. See also Figure 4CNow, the kinematic arrangement 12 and the seat portion 10 are positioned relative to the base 11 in a convenient access position EE. To further free up space for occupants to enter the rear of the vehicle seat 1, the vehicle seat 1 can be adjusted forward longitudinally via an unlocked longitudinal adjustment device 13.
[0050] In the forward position, latch 138 is positioned at lower guide rail 131, see details. Figure 1 , Figure 2 , Figure 3 and Figure 4D The latch 138 is pivotally mounted on the lower guide rail 131 via a pivot axis A8, and more specifically, on a bracket 139 fixed to the lower guide rail 131. The latch 138 is supported by a spring 137A (see example...). Figure 1 Pre-tensioned to the locking position (e.g.) Figure 4D and Figure 4E (As shown in the diagram). In this locked position, the latch 138 of the illustrated example has a portion resting on the bracket 139. In particular, the latch 138 has a locking surface and an introduction chamfer, which are arranged such that the locking element 132 can slide along the introduction chamfer in the position of releasing the locking device 134, thereby overcoming the force of the spring 137A and causing the latch 134 to rotate. Once the locking edge of the locking element 132 has moved longitudinally beyond the introduction chamfer, the latch 134 engages back to its locked position and locks into engagement with the locking edge of the locking element 132. For improved reliability, the locking element 132 includes a flange 133B (opposite to the flange 133A of the segment 125 for the second convenient access lever 121 described above). The flange 133B at least partially forms the locking edge.
[0051] Figure 4E The locking position shown can be the foremost position of the upper guide rail 130 relative to the lower guide rail 131.
[0052] exist Figure 4E In the locked position shown, the upper guide rail 130 is locked in cooperation with another component (i.e., locking element 132) via the second convenient access lever 131, preventing rearward movement relative to the lower guide rail 131. As a result, the (e.g., the foremost) convenient access position EE is locked to prevent unintentional rearward movement of the seat portion 10 and backrest 15, such as due to misuse or when the vehicle is on a sloping street. This improves comfort when entering the rear seats and reduces the risk of an occupant being trapped or pinned, particularly the risk of his or her feet being trapped or pinned in the area at the rear end of the lower guide rail 131 of the vehicle seat 1, see [link to relevant documentation]. Figure 5 .
[0053] When the vehicle seat 1 is moved from the locked easy-access position EE back to the usable seating position SU, the seat portion 10 is first (e.g., manually) moved rearward to pivot the easy-access levers 120, 121. This releases segment 125 of the second easy-access lever 121 from the locking element 132. Due to spring force, the locking element 132 rotates to disengage from the latch 138. The bolt 135 can be held in the unlocked position by a memory device that locks it in the previous longitudinal adjustment position before activating the easy-access function, or by manually unlocking the bolt 135.
[0054] The use of locking elements 132 and latches 138 is particularly simple, modular, and can be easily added to existing designs. Locking elements 132 and latches 138 can be arranged on both sides of the vehicle seat 1, i.e., on the two longitudinal adjustment devices 13. Alternatively, locking elements 132 and latches 138 can be arranged on only one side, for example, on the (inner) side of the vehicle seat 1 facing the nearest door to the vehicle. This arrangement allows for improved protection against misuse and is virtually invisible.
[0055] List of reference numerals
[0056] 1. Vehicle Seats
[0057] 10 Seating Section
[0058] 100 Seat components
[0059] 101 Seat Plate
[0060] 102 crossbars
[0061] 103 Horizontal bar
[0062] 104 Side Part
[0063] 105 arms
[0064] 11. Base
[0065] 12. Kinematic Arrangement
[0066] 120 (First) Easy access to the joystick
[0067] 121 (Second) Convenient access to the joystick
[0068] 122 Folding and flattening control lever
[0069] 125 segments
[0070] 13. Longitudinal adjustment device
[0071] 130 Upper guide rail (first rail)
[0072] 131 Lower guide rail (second rail)
[0073] 132 Locking element
[0074] 133A and 133B flanges
[0075] 134 Locking device
[0076] 135 bolts
[0077] 136 joystick
[0078] 137A and 137B springs
[0079] 138 latch
[0080] 139 stent
[0081] 14 locks
[0082] 140 hooks
[0083] 141 sales
[0084] 15 Backrest
[0085] 16 Tilt Adjuster
[0086] A1-A8 Pivot Axis
[0087] VF vehicle floor
[0088] EE Easy Access Location
[0089] FF Folded flat position
[0090] SU (Suitable Seat)
Claims
1. A vehicle seat (1), comprising: - Seat portion (10), the seat portion (10) having seat portion element (100). - Base (11), the base (11) includes a first guide rail (130). - A longitudinal adjustment device (13), said longitudinal adjustment device (13) being formed of at least a first guide rail (130) and a second guide rail (131), the first guide rail and the second guide rail being adjustable longitudinally relative to each other, and - A joystick (121), the seat component (100) is movably connected to the base (11) relative to the base (11) via the joystick. Its features The lever (121) has a segment (125) adapted to cooperate with a locking element (132), wherein the locking element (132) is rotatably mounted on the base (11), configured to operate a locking device (134) of the longitudinal adjustment device (13) to unlock the first guide rail (130) relative to the second guide rail (131), and configured to engage with a latch (138) to restrict movement of the first guide rail (130) relative to the second guide rail (131), and the vehicle seat also Includes: a kinematic arrangement (12) including the joystick (121), wherein the vehicle seat (1) can be configured by the kinematic arrangement (12) in at least one décorable use position (SU) and at least one functional position (EE, FF), and wherein the segment (125) of the joystick (121) is adapted to cooperate with the locking element (132) in the at least one functional position (EE) and not cooperate with the locking element (132) in the at least one décorable use position (SU).
2. The vehicle seat (1) according to claim 1, characterized in that, The at least one functional location (EE, FF) includes a convenient access location (EE).
3. The vehicle seat (1) according to claim 1, characterized in that, Starting from the rideable position (SU), rotation of the joystick (121) of the kinematic arrangement (12) first unlocks the locking device (134) of the longitudinal adjustment device (13) through the cooperation of the segment (125) of the joystick (121) and the locking element (132), and then moves the locking element (132) to the locked position to engage with the latch (138).
4. The vehicle seat (1) according to claim 1, characterized in that, By longitudinally adjusting the first guide rail (130) relative to the second guide rail (131), the locking element (132) in the locked position where the locking element (132) is locked into the latch (138) can engage behind the latch (138) to lock the first guide rail (130) relative to the second guide rail (131).
5. The vehicle seat (1) according to claim 1, characterized in that, The locking element (132) and the latch (138) are arranged to lock the first guide rail (130) relative to the second guide rail (131) at the front end position of the first guide rail (130) relative to the second guide rail (131).
6. The vehicle seat (1) according to claim 1, characterized in that, The latch (138) is rotatably mounted on the second guide rail (131).
7. The vehicle seat (1) according to claim 1, characterized in that, In the unlocked position, the locking device (134) of the longitudinal adjustment device (13) is movable relative to the latch (138) by moving the first guide rail (130) relative to the second guide rail (131).
8. The vehicle seat (1) according to claim 1, characterized in that, The locking element (132) is rotatable relative to the base (11) into a locked position for locking engagement with the latch (138), and is rotatable into a released position for disengaging from the latch (138).
9. The vehicle seat (1) according to claim 1, characterized in that, The locking element (132) is configured to operate the locking device (134) of the longitudinal adjustment device (13) by means of a rotatable rocker arm (136).
10. The vehicle seat (1) according to claim 1, characterized in that, The latch (138) is pre-tensioned by means of a spring (137A).
11. The vehicle seat (1) according to claim 1, characterized in that, The segment (125) of the lever (121) is adapted to cooperate with the locking element (132) by rotating the locking element (132) against the spring force.
12. The vehicle seat (1) according to claim 1, characterized in that, The segment (125) of the joystick (121) is spaced apart from the locking element (132) in the at least one rideable use position (SU).