Aerodynamic adjustment device for the side of a vehicle seat
By using a pneumatic control system that combines a swing lever and a spring on the side of the vehicle seat, the problems of high cost and slow adjustment in the prior art are solved, achieving fast, reliable side matching and stability, and reducing equipment cost and complexity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- FAURECIA AUTOMOTIVE SEATING LLC
- Filing Date
- 2021-02-10
- Publication Date
- 2026-07-24
AI Technical Summary
Existing vehicle seat side adjustment devices suffer from high costs, slow adjustment, and insufficient speed and reliability. In particular, pneumatic adjustment devices are slow when pump power is limited.
It employs a swingable lever system, combined with single or multi-chamber airbags and spring devices, to achieve rapid adjustment by pneumatically manipulating the inner lever arm, to achieve rapid matching of the side by using spring preload, and to ensure the stability of the basic position by using a locking device to avoid long-term pneumatic pressure loading.
It enables rapid and reliable adjustment of the side, reduces hardware costs, improves adjustment speed and equipment lifespan, simplifies the control and monitoring process, and increases customer acceptance.
Smart Images
Figure CN113246826B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an adjustment device for the side (Seitenwange, sometimes also called sidewall) of a vehicle seat and a vehicle seat of that kind. Background Technology
[0002] In vehicle seats with cushions and backrests, occupants are typically housed between laterally extending side sections (side bulges), which thus provide lateral support for the occupant. Some vehicle seats allow for this lateral alignment of the occupant's side sections.
[0003] Therefore, adjustment devices are provided, for example, in the seat components or backrest, making it possible to adjust the outer side inwards to better accommodate and laterally support the seat occupant. This adjustment can also be used to improve the safety of the seat occupant in dangerous or emergency driving situations. Thus, for example, when driving through a curve, adjusting the side allows for better support of the seat occupant relative to the inertial forces acting on their body. Here, vehicle seats typically have a basic position with outwardly adjustable sides to facilitate easy accommodation of seat occupants, especially those of different sizes. When the side adjustment device is activated, it is usually adjusted inwards, that is, towards the center of the seat.
[0004] For lateral adjustment, electromechanical adjustment devices are known, but they are very heavy and expensive. In addition, pneumatic adjustment devices are known, which typically have air bubbles, air chambers, or air bladders that can be inflated via, for example, a pump and pneumatic tubing located in the center of the vehicle seat. This allows for adjustment at different positions of the seat with relatively low hardware costs, where the adjustment feels soft and pneumatic overload protection is possible. Pneumatic air cushions or bubbles are often directly located in the sides; for inward adjustment of the sides, the air cushion is inflated and compresses the sides inward, for example, via a centrally placed plastic plate.
[0005] Such regulation, however, is usually relatively slow, especially when multiple bubbles are regulated via pumps with limited pump power and corresponding pneumatic pipes.
[0006] Furthermore, pneumatic adjustment with spring preload is known. EP 0 343 025 A1 discloses a side adjustment device for a backrest, wherein a support plate is securely connected to a backrest frame and a housing is pivotally disposed at the backrest frame. An inflatable bag is disposed between the support plate and the housing, and the housing pivots inward when the bag is filled, thereby enabling inward adjustment of the side. For return adjustment, a return spring is advantageously provided between the housing and the support plate.
[0007] US 2010 / 117412 A1 describes an adjustment device with an adjustment element fixed to a side guard. A support unit is provided for mechanically supporting the adjustment element, wherein a pneumatically operable positioning unit is provided for positioning the adjustment element relative to the support unit; this adjustment unit may be, in particular, an inflatable air bubble. DE 10 2007 009 891A1 describes an apparatus and method for adjusting the side position of a vehicle seat, wherein an adjustment element to be connected to the side and a support device for mechanically supporting the adjustment element are provided. The adjustment element is positioned accordingly by a pneumatically operable positioning device, wherein a spring is provided as an energy storage device for pre-tensioning the adjustment element to a rest position.
[0008] DE 10 2014 201 663 A1 discloses a device for pneumatic adjustment of a seat in a vehicle, particularly a motor vehicle, having at least one adjustment device with a pneumatic operating device and a triggering device for generating adjustment of the seat by means of pneumatic pressure.
[0009] DE 10 2015 223 226 A1 discloses a motor vehicle seat assembly with a pre-collision control unit that generates a control signal in the event of an impending collision and thereby manipulates an actuator that acts on a lever arm of a swing element. The actuator includes an inflatable element and a support element.
[0010] DE 10 2009 041 457 A1 describes a device for adjusting the side of a seat.
[0011] GB 2 255 905 A describes another adjustable vehicle seat with an air cushion and a pair of X-shaped connecting devices for adjusting the seat components.
[0012] US 2005 / 0161921 A1 describes an occupant protection device for installation in a vehicle. Summary of the Invention
[0013] The present invention is based on the objective of creating an adjustment device for adjusting the sides of a vehicle seat and a vehicle seat that enables reliable and rapid side matching with relatively little expense.
[0014] This task is accomplished by an adjustment device as described in claim 1 and a vehicle seat with such an adjustment device. The dependent claims describe preferred improvements.
[0015] Therefore, a lever is oscillatingly mounted, which can be hinged, particularly along the oscillation axis, in the frame of the vehicle seat, such as the backrest frame. The lever oscillates its outer lever arm, that is, the outwardly extending lever arm, inwardly and outwardly; the lever is operated via its inner lever arm, which is acted upon by an air-blowing device, that is, particularly a single-chamber or multi-chamber bubble or air bladder, and by a spring device. Here, the air-blowing device presses the inner lever arm into its basic position, that is, in particular, presses it inward, i.e., the outer lever arm is oscillated outward and thus the side or lateral support of the side is adjusted to the open position. For this purpose, the air-blowing device can be directly mounted between the inner lever arm and the support (Gegenlager) or the seat fixing support (e.g., the backrest frame). The spring device reacts to the air-blowing device and preloads the inner lever arm into the operating position.
[0016] A spring device can, in principle, be any device that stores energy and applies force, that is, stores energy particularly through deformation, compression, or stretching / expansion. For this purpose, a spring device can be particularly mechanical, meaning it can be elastically tensioned, particularly through torsional or tensile stress. Therefore, a spring device can be, for example, a helical spring or a torsion bar. Here, the spring device can be, for example, a metal spring, but it can also be a rubber spring, a composite spring made of multiple materials, a plastic spring, or a combination thereof. Therefore, according to one embodiment, the spring device can also be pneumatically constructed, that is, as a spring-blowing device that reacts to the first air-blowing device.
[0017] Spring devices can be tensioned, in particular, between the inner lever arm and the seat-fixed support (e.g., the backrest frame).
[0018] Rapid adjustment from the side to the operating position can be achieved by spring preload; this adjustment direction is independent of pneumatic actuation of the air bubbles via the pump and supply unit (Zuleitung) or relatively slow filling. Therefore, rapid and reliable inward adjustment from the side can be achieved despite the limited dimensions of the blowing device, pneumatic supply unit, and pneumatic pump or compressor.
[0019] In order to return to the adjustment, the air device is refilled, so that its relative spring action swings the inner lever arm back to its basic position (that is, inward), thereby swinging the outer lever arm that extends into the side outward.
[0020] Therefore, the adjustment speed from the basic position to the operating position can be achieved by electromechanical adjustment, and the hardware cost of such a structure with corresponding electromechanical components in the side is unnecessary.
[0021] Therefore, a significant advantage of the present invention is the shorter reaction time and the rapid adjustment of the side, which is independent of the size of the pneumatic device.
[0022] According to the invention, a locking device is further provided to lock the basic position. Therefore, the blowing device is initially configured to tension the spring device from the operating position to the basic position; that is, the blowing device reacts to the spring device during filling, swinging the lever and thus tensioning the spring device. After reaching the basic position, the locking device locks this position, primarily as a mechanical lock. Therefore, the lever and thus its side remain in the basic position until the locking device is adjusted from its locked position to its unlocked position, and thus the spring device is released. The tensioned, now released spring device can then be relaxed, and the inner lever arm is adjusted to the operating position.
[0023] Several advantages are achieved through additional locking devices:
[0024] In the absence of a locking device, an air-blowing device is first installed to hold the spring device in its tensioned position. Therefore, the air-filled air-blowing device operates continuously relative to the tensioned spring device in its basic position. However, the pneumatic air-blowing device may, in principle, have some leakage, which may occur over a long period either within the air-blowing device itself or similarly in the pneumatic supply unit or in the connection between the air-blowing device and the pneumatic conduit. Because the basic position is held for a longer period and the air-blowing device is initially loaded by the tensioned spring device—that is, slightly overpressure may occur due to spring stress if necessary—air loss may occur in the air-blowing device over a longer period, which can be compensated for by refilling in the unlocked basic position.
[0025] In order to achieve a long-term reliable basic position with low cost and high reliability, a locking device is provided according to the present invention.
[0026] Because the basic position is thus locked, that is, especially the lever and / or spring mechanism is locked in the basic position, it is no longer necessary to maintain the basic position after the air blowing device has been adjusted to it. Therefore, the air blowing device can then be completely or partially emptied again. In principle, it is not necessary to empty the air blowing device after locking; the valve to the pneumatic supply section of the air blowing device can then be released, thereby allowing the air blowing device to be emptied again.
[0027] Locking devices can lock levers, especially inner lever arms, and / or spring devices. Locking devices can be, in particular, mechanical locking devices, that is, devices that perform mechanical adjustment and mechanically lock levers and / or spring devices.
[0028] This locking can be achieved, in particular, by form-fitting and / or by a rear grip. Thus, a locking device with a locking pin (e.g., a mechanical locking arm) can engage, for example, with the inner lever arm and / or with the spring device, thereby preventing adjustment of the lever arm and / or spring device to the operating position. Higher reliability is achieved through such mechanical locking or a mechanical rear grip; in the absence of a locking device for adjustment to the unlocked position, the spring device and / or lever arm are not released and therefore cannot be adjusted to the operating position.
[0029] The locking device can be adjusted pneumatically or non-pneumatically. The locking device can be, for example, oscillatingly housed or oscillatingly hinged, for example, at the backrest frame. Thus, the locking device (such as a lever or inner lever arm) can be securely supported at the backrest frame, so that the support (Lager, sometimes also called bearing) of the locking device is not affected by adjustment between the basic position and the operating position.
[0030] According to the present invention, several advantages are achieved:
[0031] Reliable accommodation in the basic position is achieved by using a pre-tensioned spring device without the need for a continuous force to hold the tensioned spring device in place via an air blowing device.
[0032] The following are not necessary: monitoring or measuring the pressure in the blowing equipment; in addition, the following are not necessary: detecting possible leaks during the basic position.
[0033] The air blowing device and its pneumatic supply unit should be designed reliably enough to enable the air blowing device to be used for adjusting the lever arm and for filling the tension spring device; however, leakage in the long term is not a problem in principle.
[0034] Refilling or re-filling to maintain the basic position is not necessary; therefore, control is simplified in principle as well.
[0035] Repeated positioning of the side is made possible because there is a reliable locking after adjustment.
[0036] The air blowing device and its pneumatic supply unit are protected because they are not continuously pressured in the basic position; only the adjustment process for adjusting the lever and spring device to the basic position is necessary. Therefore, the lifespan of the air blowing device and other pneumatic components is extended.
[0037] Locking devices can, in principle, be constructed in a standardized manner for different systems. They can be configured such that mechanical locking is possible regardless of the size, volume, and shape of the blowing equipment used, and, if necessary, the air pressure employed. Thus, the locking device can be constructed in a standardized manner, making a universal solution possible.
[0038] Customer acceptance is improved because reliable mechanical locking avoids the need for sustained pneumatic pressure to fix the basic position.
[0039] Furthermore, the air blowing device, the pneumatic piping to the air blowing device, and the pneumatic valves can be optimized to allow the air blowing device to fill during the filling process, that is, to adjust it to the basic position, similarly regarding the pneumatic delivery volume. This makes a rapid filling process possible, which in turn makes rapid adjustment possible.
[0040] Furthermore, the adjustment from the basic position to the operating position can also be accelerated, because in this adjustment, the spring device no longer needs to press the air blowing device.
[0041] The locking device is adjusted by a locking adjustment device, which can be formed by a pneumatic locking adjustment device, particularly by locking a bubble. This pneumatic locking adjustment device can, in principle, be defined in size significantly smaller than the air-blowing device used to adjust the inner lever arm and for tensioning the spring; for the pneumatic locking adjustment device, the application of force, as in the case of the air-blowing device used to adjust the inner lever arm, is not necessary.
[0042] Here, the pneumatic locking adjustment device, especially the pneumatic locking bubble, makes pneumatic control possible not only for the air blowing device used to adjust the inner lever arm but also for the pneumatic locking adjustment device itself. Therefore, in principle, a common pneumatic control device can be provided, for example, with multiple pneumatic valves, which can be housed in a common housing. This achieves higher cost efficiency and a lower component share. Here, reliable control of different processes, especially between the basic position and the operating position, as well as the adjustment from the operating position back to the basic position, and further, locking after adjustment from the operating position back to the basic position, is possible. Therefore, a common valve body can be provided to ensure the entire function and adjustment.
[0043] In principle, a common pneumatic pump can be installed here, which, for example, supplies air to a common valve body, and then supplies air or compressed air for different pneumatic applications, not only for the blowing device for adjusting the inner lever arm and tension spring device, but also for the pneumatic locking adjustment device.
[0044] Alternatively, an additional pump can be provided for, for example, actively adjusting the inner lever arm, thereby enhancing the adjustment capability. Thus, adjustment of the lever and side can be achieved directly via the additional pump, eliminating the need for airflow to be directed through the valve body.
[0045] According to the invention, the adjustment device can be located in the backrest and / or in the seat cushion, that is, the side correspondingly used to support the seat occupant is placed inward and then outward to return to the external position for adjustment. Therefore, vehicle seats can also have such an adjustment device not only in the backrest but also in the seat components, which is particularly operated by a common pump with a corresponding pneumatic supply. Here, the relatively slow return adjustment via the common pump is not important.
[0046] The construction according to the invention can be used in cases where the sides of the backrest and seat cushion have different shapes, wherein a corresponding lever with an external lever arm extending into the side can be provided accordingly. Therefore, a cost-effective, uniform construction can be used for different types of seats.
[0047] The weight increase of vehicle seat adjustment devices is relatively small because, for example, air bubbles and pneumatic tubes can be constructed with less mass and volume. Similarly, mechanical reset devices can be constructed with simple springs (such as tension or torsion springs) and do not have a significant weight. In particular, multiple such adjustment devices can also be installed in the vehicle seat. Likewise, locking devices and their operating mechanisms cannot be constructed with minimal weight.
[0048] Furthermore, the packaging or structure of the device can be adjusted so that it extends from the side area and is fitted into the interior of the seat cushion or backrest; thus, the inner lever arm, spring device, and air blowing device can be located in the interior area, so that only the outer lever arm (e.g., with side supports that are adjusted by it) extends into the side area. As a result, the design freedom and packaging of the side are improved. Attached Figure Description
[0049] The present invention will be described in more detail below with reference to one embodiment, using the accompanying drawings. Wherein:
[0050] Figure 1 The vehicle seats are shown in a perspective front view;
[0051] Figure 1 and 2The pneumatic adjustment device and its adjustment are shown, firstly without the functionality of a locking device;
[0052] Figure 2 Showing along from Figure 1 A cross-sectional view of the side of the backrest in its basic position, with line AA pointing towards it.
[0053] Figure 3 The corresponding settings after the control side is set are displayed. Figure 2 The illustration;
[0054] Figure 4 The illustration shows an implementation of a locking device for locking the basic position, in the unlocked position of the locking device;
[0055] Figure 5 Displays the corresponding position in the locking device Figure 4 The illustration;
[0056] Figure 6 It shows a relative [device / system] with an additional power pump for actively adjusting the blowing device to a basic position. Figure 4 ,5. Implementation forms of transformation. Detailed Implementation
[0057] Vehicle seat 1 according to Figure 1 The seat has a seat cushion (seat component) 2 with a seat component side 2a and a backrest 3 with a backrest side 3a. A feature for... Figure 2 and 3 The figure shows the adjustment or matching device 4 at the seat occupant 5. The attached figure shows the corresponding structure of the adjustment device 4 in the backrest 3 for adjusting the backrest side 3a.
[0058] The adjustment can be achieved, for example, when the seat occupant 5 is seated; furthermore, it can be achieved, for example, in dangerous driving situations and / or in situations involving cornering and the corresponding inertial load of the seat occupant 5. Here, the two lateral backrest sides 3a are swung laterally, that is, in the Y direction or in the -Y direction. The adjustment device 4 is in Figure 2 The side adjustment device 4a on the left and the side adjustment device 4b on the right are shown more precisely in section 3. They are constructed in principle similarly or as mirror images of each other, so only the side adjustment device 4a on the left will be described below. The side adjustment device 4a has a lever 7 with an inner lever arm 7a and an outer lever arm 7b, wherein the lever 7 is housed in the backrest frame 8 with its pivot axis 7c and is therefore substantially rigid. The outer lever arm 7b is housed in, for example, a side support 6 formed of plastic or an adjustment side support 6 extending into the backrest side 3a; when the outer lever arm 7b is... Figure 2The position comes out and swings inward to Figure 3 When in the correct position, the side support 6 is adjusted inward together and presses inward against the backrest side 3a.
[0059] The side adjustment devices 4a and 4b are correspondingly pre-tensioned into their open or open receiving positions. For this purpose, a spring 9 is provided at the left-side side adjustment device 4a, which acts as a tension spring acting on the internal lever 7a and pre-tensioning the lever relative to the backrest frame 8. Furthermore, an inflatable bubble 10 is provided between the internal lever 7a and the backrest frame 8, which is located on the side of the backrest 3a... Figure 2 The air bubble 10 is inflated, that is, filled with air, in its open basic position as shown. Through the inflation of the air bubble 10, the internal lever 7a is adjusted away from the backrest frame 8, that is, laterally towards the interior of the seat; correspondingly, the external lever 7b, extending forward into the side portion 4a, is swung outward, thus placing the side portion 4a in its open receiving position. The spring 9 is thus adjusted to its tensioned position, that is, it pulls the internal lever 7a outward, that is, in… Figure 2 To the left, the bubble 10 is tensioned accordingly by the internal lever 7a, which is pre-tensioned by a spring. Thus, the two side adjustment devices 4a, 4b are adjusted to the outwardly open receiving position or basic position by their respective bubbles 10 and via their internal levers 7a, and are pre-tensioned to the closed adjustment position by their respective springs 9.
[0060] In the activated state, air is introduced into the bubble 10 via a pump or compressor and the pneumatic conduit 11 shown here (which serves as both a supply and discharge point for air to the bubble 10). Here, spring tension is caused by the tensioned spring 9, and the inner lever arm 7a is rapidly or abruptly adjusted to the spring preload. Figure 3 The manipulated adjustment position is shown in the image. Here, as in... Figure 3 As indicated by the arrow, the external lever 7b, extending into the backrest side 3a along with the side support 6, is adjusted laterally inward, thus enabling a fit for the seat occupant 5 seated between the backrest sides 3a. The adjustment speed is therefore determined, in particular, by the spring tension of the spring 9. Figure 2 In the location of the container Figure 3 The return adjustment is achieved in such a way that the pump (not shown) inflates the bubble 10 via the pipe 11, and the bubble 10 is thus filled with air relative to the action of the spring 9 and swings inward against the internal lever 7a.
[0061] Depend on Figure 2 The starting position to Figure 3The adjustment speed of the position is therefore not determined by the pump power and is especially higher than that of the pump. Figure 2 In the location of the container Figure 3 The return adjustment reset speed.
[0062] Here, the adjustment device 4 with side adjustment devices 4a, 4b can be provided not only in the backrest 3 but also in the seat cushion 2 for adjusting the side 2a of the seat component.
[0063] according to Figure 2 These adjustments in ,3 are also in principle Figures 4 to 6 The embodiment shown is provided. A locking device 12 is provided for locking each of the side adjustment devices (i.e., in each side). The two locking devices 12 can therefore be constructed identically or similarly, and will be described subsequently, for example, with reference to the construction shown on the left.
[0064] The locking device 12 is configured as a pneumatic lock according to the shown embodiment and here has a swingable locking lever 14, which is supported in the locking support 15. The locking support 15 can be fixed in particular, for example, with the swing axis 7c of the lever 7; the locking support 15 is not adjusted by adjusting the lever 7, that is, particularly by the swing of the inner lever arm 7a.
[0065] Furthermore, the locking lever 14 has a locking pin 16 (locking arm), which is configured to grip or engage and lock the rear of the inner lever arm 7a and / or the spring 9; the locking lever 14 can be swung by a relatively small swing distance, in Figure 4 The unlocked position shown in the diagram, where the locking pin 16 is not engaged and therefore not yet functional, is different from the position shown in the diagram. Figure 5 Between the locked positions shown in the image. Figure 4 and 5 This shows that therefore with Figure 2 The corresponding basic position; the bubble 10 is filled and the spring 9 is tensioned, thus the inner lever arm 7a is swung to the right in its basic position in the left side 2a. In the unlocked position of the locking device 12, the inner lever arm 7a is therefore held in place by the action of the tensioned spring 9 via the bubble 10.
[0066] The locking device 12 has a locking bubble 18, which acts as a locking adjustment device for swinging the locking lever 14. The locking bubble 18 may be installed, in particular, at or in the locking lever 14 and in… Figure 4 The filled state shown is, for example, supported at the backrest frame, that is, as the locking support 15 is in the area not involved by the swinging process of the inner lever arm 7a and thus forming a reliable support.
[0067] Additionally, a locking spring is advantageously provided, which preloads the locking lever 14 into its locked position and thereby tensions it by the locking bubble 18.
[0068] Figure 5 The subsequent locking is shown, that is, the adjustment of the locking lever 14 to the locked position, in which the locking pin 16 engages or is held in a form-fitting manner at the rear. Advantageously, the locking pin 16 can be held directly after the inner lever arm 7a; however, in principle, it can also be provided with engagement with the spring 9, thereby locking the spring 9, for example. In addition, additional mechanically coupled devices can also be locked by the locking pin 16.
[0069] The locking is thus advantageously achieved by a rear grip, so that the spring force of spring 9 acts on the locking lever 14 without adjustment.
[0070] exist Figure 5 In the locked position, bubble 10 can then be emptied. It may also be gradually emptied due to leakage, for example. Alternatively, it can be configured such that bubble 10 is emptied via an active control signal, thus... Figure 5 and 2 The basic position shown in the image is to Figure 3 Subsequent adjustments in the operating position are not braked by bubble 9. However, it is also possible to configure bubble 9 to be fully or partially filled in order to slightly cushion the adjustment movement.
[0071] according to Figure 4 The pneumatic control of the 5-type device involves a valve body 20 that is not only configured to fill the bubble 10 but also to fill and lock the bubble 18. Here, the valve body 20 may have a corresponding number of valves 21 and pneumatic outlets 22 to facilitate corresponding operation of the pneumatic device on each of the two sides. Figure 4 The embodiment shown here of ,5 is provided with a single pneumatic pump 24 for valve body 20, which can therefore be used for all adjustments. Pneumatic conduit 130 extends from valve body 20 not only to air blowing device 10 but also to locking bubble 18; via pneumatic conduit 130 and valve body 20, not only air blowing device 10 but also locking bubble 18 can be filled, and similarly can be emptied via a corresponding valve in valve body 20.
[0072] The left and right side controls can be implemented simultaneously, especially through the same pneumatic supply unit 130 with the lower branch, as shown, thereby reducing hardware and control costs.
[0073] exist Figure 6 The implementation form shown in the document is the same as Figure 4The difference lies in the following: an auxiliary pump 124 or air pump 124 is provided, which is provided in addition to the pneumatic pump 24 and is especially used for the rapid adjustment of the two bubbles 9. Here, additionally as shown, a check valve device (check valve) 125 may be provided, which thus prevents the backflow of the bubbles 9 to the auxiliary pump 124.
[0074] according to Figure 6 The implementation form thus achieves higher performance or efficiency, in which the internal lever is clearly adjustable to the customer and therefore the adjustment between the operating position and the basic position is directly achieved by the auxiliary pump 124 without the pneumatic flow through the valve body 20 that could slow down the adjustment.
[0075] List of reference numerals
[0076] 1. Vehicle Seats
[0077] 2 seat cushions
[0078] 2a Seat components - side
[0079] 3 Backrest
[0080] 3a Backrest - Side
[0081] 4. Adjust the equipment
[0082] 4a, 4b Side adjustment devices
[0083] 5. Seat occupants
[0084] 6. Side support, adjustable via outer lever arm 7b
[0085] 7. Lever
[0086] 7a Inner lever arm
[0087] 7b Outer lever arm
[0088] 7c The axis of swing of lever 7
[0089] 8 Backrest Frame
[0090] 9. Springs, such as tension springs or torsion springs.
[0091] 10 Inflatable Bubbles
[0092] 11 Pneumatic piping
[0093] 12 Locking devices
[0094] 14 Locking lever
[0095] 15 Locking support
[0096] 16 Locking pins, locking arms
[0097] 18. Lock the bubble and lock the adjustment device.
[0098] 20 Locked Body
[0099] 21 valve
[0100] 22 Pneumatic outlet
[0101] 24 Pneumatic Pump
[0102] 124 Pneumatic Auxiliary Pump
[0103] 125 Check Valve Equipment
[0104] 130 Pneumatic pipe.
Claims
1. An adjustment device (4) for adjusting the side (3a) of a vehicle seat (1) from a basic position to an operating position, wherein, The adjustment device (4) has: A double-arm lever (7) with an outer lever arm (7b) and an inner lever arm (7a) for adjusting the side (3a), An inflatable air-blowing device (10) for adjusting the inner lever arm (7a), and The spring device (9) for adjusting the inner lever arm (7a) in, The air blowing device (10) is filled in the basic position of the adjusting device (4). The spring device (9) is tensioned in the basic position and preloads the inner lever arm (7a) into the operating position. The spring device (9) presses against the air blowing device (10) in the operating position, and A locking device (12) is provided, which can be adjusted between an unlocked position and a locked position, and locks the basic position in its locked position. The characteristic feature is that the locking device (12) in its locked position is fixed in the basic position relative to the spring action of the spring device (9) even in the case of an unfilled air blowing device (10).
2. The adjustment device (4) according to claim 1, characterized in that, The locking device (12) grips from behind and / or forms a shape fits the double-arm lever (7) or the element connected to the double-arm lever (7) or the spring device (9) with a locking pin (16) in its locked position.
3. The adjustment device (4) according to claim 1 or 2, characterized in that, The locking device (12) has a locking adjustment device for adjusting the mechanical locking pin (16) between the unlocked position and the locked position.
4. The adjustment device (4) according to claim 3, characterized in that, The locking device (12) is pre-tightened to the locking position by a locking spring and can be unlocked by the locking adjustment device.
5. The adjustment device (4) according to claim 3, characterized in that, The locking adjustment device can be pneumatically operated.
6. The adjustment device (4) according to claim 5, characterized in that, The locking device (12) has a locking adjustment device for adjusting a swingable locking lever (14) with the locking pin (16) between the unlocked position and the locked position, wherein the locking adjustment device can be pneumatically operated as a locking bubble (18) for swinging the locking lever (14).
7. The adjustment device (4) according to claim 6, characterized in that, The locking bubble (18) is inflatable for unlocking the locking device (12) and deflatable for locking the locking device (12).
8. The adjustment device (4) according to claim 6 or 7, characterized in that, The locking bubble (18) and the blowing device (10) can be pneumatically controlled together.
9. The adjustment device (4) according to claim 1 or 2, characterized in that, It has the following characteristics: The locking device (12) and the blowing device (10) are pneumatically controlled by a pump (24) via a common valve body (20), and An additional auxiliary pump (124) or power pump operates the air blowing device (10) by bypassing the valve body (20).
10. The adjustment device (4) according to claim 1 or 2, characterized in that, The air blowing device (10) is single-chambered or multi-chambered, and in the case of inflation, the distance between the inner lever arm (7a) and the support is increased.
11. The adjustment device (4) according to claim 1 or 2, characterized in that, In the basic position, the inner lever arm (7a) is adjusted inward toward the center of the seat and the outer lever arm (7b) is adjusted outward.
12. The adjustment device (4) according to claim 1 or 2, characterized in that, The air blowing device (10) and the spring device (9) act directly on the inner lever arm (7a).
13. The adjustment device (4) according to claim 1 or 2, characterized in that, The spring device is a mechanical spring device, which is disposed between the inner lever arm (7a) and the support.
14. The adjustment device (4) according to claim 1 or 2, characterized in that, The double-arm lever (7) is firmly supported at the support in the swing axis (7c) constructed between the inner lever arm (7a) and the outer lever arm (7b), and A side support (6) is fixed at the outer lever arm (7b), which is either part of the side (3a) or provided in the side (3a).
15. The adjustment device (4) according to claim 1 or 2, characterized in that, It has two side adjustment devices (4a, 4b) for adjusting one of the sides (3a) and (2a), wherein each side adjustment device (4a, 4b) has a double-arm lever (7), an air blowing device (10) and a spring device (9).
16. The adjustment device (4) according to claim 2, characterized in that, The locking device (12) grips and / or shapes-fits the inner lever arm (7a) from behind in its locked position.
17. The adjustment device (4) according to claim 3, characterized in that, The locking device (12) has a locking adjustment device for adjusting the swingable locking lever (14) with the locking pin (16) between the unlocked position and the locked position.
18. The adjustment device (4) according to claim 8, characterized in that, The locking bubble (18) and the blowing device (10) can be pneumatically operated together via the same pneumatic pump (24) and / or via a common pneumatic valve body (20).
19. The adjustment device (4) according to claim 9, characterized in that, An additional auxiliary pump (124) or power pump can operate the air blowing device (10) by means of a check valve device (125) bypassing the valve body (20).
20. The adjustment device (4) according to claim 10, characterized in that, The blowing device (10) is constructed as a single-chamber bubble.
21. The adjustment device (4) according to claim 10, characterized in that, The air blowing device (10) increases the distance between the inner lever arm (7a) and the backrest frame (8) when inflated.
22. The adjustment device (4) according to claim 13, characterized in that, The spring device is a tension spring (9), a helical spring, and / or a torsion spring.
23. The adjustment device (4) according to claim 13, characterized in that, The spring device is disposed between the inner lever arm (7a) and the backrest frame (8).
24. The adjustment device (4) according to claim 14, characterized in that, The double-arm lever (7) is firmly supported on the backrest frame (8) in the swing axis (7c) constructed between the inner lever arm (7a) and the outer lever arm (7b).
25. A vehicle seat (1) having: Seat cushion (2), Backrest (3), and The adjustment device (4) according to any one of the preceding claims is configured to adjust the side (3a) of the backrest (3) and / or the side (2a) of the seat cushion (2) in the lateral (y) direction, both internally and externally.
26. The vehicle seat (1) according to claim 25, characterized in that, Adjustment devices (4) with two side adjustment devices are provided not only in the seat cushion (2) but also in the backrest (3) for adjusting not only the side (3a) but also the side (2a), wherein a common pump for the adjustment devices (4) is provided.