Vehicle seat with easy-entry mechanism

Abstract

The invention relates to a seat, in particular a vehicle seat (100), having a backrest (14) which can be pivoted about a pivot axis (14Y), at least one seat rail pair (200) for longitudinal adjustment of the seat, a locking device (200A) for locking the at least one seat rail pair (200), wherein at least one lockable fitting (15) is provided for articulating the backrest (14) relative to the seat (12) and the backrest (14) can be pivoted from an initial position (AP) into an easy-entry position (II) which can be occupied in order to more easily enter a rear seat, wherein the seat has a compact and easily producible easy-entry mechanism (M).

Description

Technical Field

[0001] This invention relates to an easy-access mechanism for vehicle seats, designed to facilitate entry for people into the rear seats. Background Technology

[0002] An easy-access system for vehicle seats is known from patent document EP 3 325 310 B1, which enables easy access to the second or third row of seats in a vehicle. This easy-access system is operable by an unlocking lever disposed on the backrest of the vehicle seat, thereby pivoting the backrest of the vehicle seat away from the access area. The vehicle seat is also disposed on rails so that, when the unlocking lever is actuated, the vehicle seat can additionally or alternatively move out of the access area in the direction of travel. In this case, the locking device of the seat rail pair is specified to be unlocked by a Bowden line operated by the pivoting movement of the backrest via a forward pivoting of the vehicle seat backrest. A vehicle seat having a rear base for the backrest, the backrest being pivotable about a backrest pivot axis relative to the rear base, is disclosed in detail. The vehicle seat also includes at least one pair of seat rails for longitudinally adjusting the vehicle seat and a locking device for locking the at least one pair of seat rails. At least one lockable fitting is provided for hinged to the backrest onto the rear base, and the backrest is pivotable to an easy-entry position that can be occupied for easier access to the rear seats. Furthermore, the vehicle seat has a pawl arranged on a drive element. When the backrest is pivoted to the easy-entry position, the pawl can be grasped by a drive element arranged on the backrest and thus carried in a manner that follows the movement of the backrest. An operating lever is provided, configured to act on the pawl such that when the backrest is pivoted, the pawl is not grasped by the drive element and the backrest can pivot beyond the easy-entry position.

[0003] Additional references are made to patent documents DE102011101876A1, DE102012015294A1, DE102013221925B3, US2004 / 0239168A1, DE102009035305A1, US7819479B2, US7828382B2, US2013 / 0057041A1, DE102013221132A1, DE102015110808A1, US10286814B2, and DE102017218125A1, which disclose this type of vehicle seat. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to improve the access mechanism of the vehicle seat of the aforementioned type.

[0005] The present invention is a seat, particularly a vehicle seat, having a backrest pivotable about a backrest pivot axis, at least one pair of seat rails for longitudinal adjustment of the vehicle seat, and a locking device for locking the at least one pair of seat rails, wherein at least one lockable fitting is provided for hinged backrest relative to seat, and the backrest is pivotable to an accessible position that can be occupied for easier access to a row of seats, wherein the seat has an access mechanism.

[0006] According to the invention, the easy-access mechanism has a drive element in the form of a connecting rod, which is indirectly or directly supported on the backrest structure and can be manipulated relative to the backrest by reversible manipulation of the first Bowden line.

[0007] According to the invention, the connecting rod applies an action to the central connecting element of the access mechanism when it is manipulated.

[0008] According to the present invention, the central connecting element is connected to the deflection element and the cam element.

[0009] According to the invention, the deflecting element and the cam element are arranged to be indirectly or directly supported on the backrest structure in a manner that allows them to pivot simultaneously about their pivot axis.

[0010] According to the invention, the reversible translational motion of the connecting rod causes a reversible pivoting motion of the cam element about its pivot axis, which strikes the unlocking lever.

[0011] According to the invention, the unlocking lever is connected to the accessory, either indirectly or directly, such that displacement of the unlocking lever causes the accessory to unlock, thereby allowing the backrest to flip from its initial position to an easy-access position.

[0012] According to the present invention, the reversible translational motion of the connecting rod simultaneously causes a reversible pivotal motion of the deflecting element about its pivot axis, which in turn drives a clamping element that can be reversibly translated during its pivotal motion.

[0013] According to the invention, the clamping element is supported indirectly or directly on the backrest structure in a manner that is substantially translatably movable and preferably pivotally movable with a small gap.

[0014] According to the invention, the deflection element and the gripper element are movably connected such that the gripper element can be pre-positioned on the drive element of the second Bowden line.

[0015] According to the invention, the clamping element clamps the drive member only when the backrest is flipped to the easy-access position, wherein the pre-positioned clamping element reversibly drives the drive member and manipulates the second Bowden line, which is connected to the drive member, when the backrest is flipped, thereby reversibly unlocking the locking device of the seat guide pair and causing longitudinal adjustment of the seat.

[0016] The preferred design scheme according to the present invention can be derived from the specification. Attached Figure Description

[0017] The invention is explained below with reference to the accompanying drawings. In the drawings:

[0018] Figure 1A A perspective side view of a vehicle seat with a cushioned structure is shown, which has a main mechanism for adjusting the basic positions I, II, and III of the vehicle seat (I = loading floor position, II = easy entry position, III = seat longitudinal adjustment position).

[0019] Figure 1B Showing according to Figure 1A The vehicle seats, but without cushioning, are shown to illustrate the basic load-bearing structure;

[0020] Figure 1C The design of a split rear seat without a cushion structure is shown to illustrate the basic load-bearing structure of the rear seat.

[0021] Figure 2 A schematic side view of a vehicle seat with a main mechanism is shown to illustrate the basic adjustable positions I, II, and III starting from the initial position AP;

[0022] Figure 3 An exploded view of the components of the easy-entry mechanism belonging to the main mechanism is shown in the initial position AP;

[0023] Figure 4 The initial position AP shows a perspective view of the components of the access mechanism of the main mechanism in the assembled state;

[0024] Figure 5A The components of the easy-access mechanism of the main mechanism are shown from the first side ① in the initial position AP;

[0025] Figure 5B The components of the easy-access mechanism of the main mechanism are shown from the second side ② in the initial position AP;

[0026] Figure 6A The components of the easy-access mechanism of the main structure are shown from the first side ① in the loading floor position I;

[0027] Figure 6B The components of the easy-access mechanism of the main mechanism are shown from the second side ② in the loading floor position I;

[0028] Figure 7A The components of the easy access mechanism of the main mechanism are shown from the first side ① in the activated position AP→II when activating the easy access function from the initial position AP to the easy access position II.

[0029] Figure 7B The components of the easy access mechanism of the main mechanism are shown from the second side ② in the activated position AP→II when activating the easy access function from the initial position AP to the easy access position II.

[0030] Figure 8A The components of the access mechanism of the main mechanism are shown from the first side ① in access position II;

[0031] Figure 8B The components of the access mechanism of the main mechanism are shown from the second side ② in access position II.

[0032] In the figures explained below, the same reference numerals are used for the same components, wherein, if necessary, all components that have been described are not reinterpreted in each figure by reference numerals, or certain components are not reassigned reference numerals if necessary. Detailed Implementation

[0033] The subject of this invention is a seat, particularly a vehicle seat 100, having a backrest 14 pivotable about a pivot axis 14Y and a seat 12 adjustable via seat rails 200, the seat being connected to the backrest 14.

[0034] At least one lockable backrest adjuster 15 (e.g., a stop fitting), also simply referred to as a fitting, is provided for adjusting the position of the backrest 14, thereby enabling the backrest 14 to be adjusted to the closed loading floor position I and the open backrest position as the initial position AP and the easy-access position II, so as to facilitate access to the row of seats arranged behind the seat.

[0035] A control lever 22 is arranged on the accessory 15 (e.g., a stop accessory), which specifies the position of the pawl 22B via a guide groove, such that by activating the control lever 22, the backrest 14 can be adjusted to the loading floor position I, while the adjustment of the seat rail 200 is not activated.

[0036] Without activating the control lever 22, the backrest 14 can be adjusted from the initial position AP to the easy-entry position II by manipulating the easy-entry trigger element 11, especially at the top of the backrest 14. In this position, the backrest 14 is flipped forward to the easy-entry position II, and the adjustment of the seat rail pair 200 is activated so that the vehicle seat 100 as a whole can be pushed forward.

[0037] The control handle 22 and the transmission rod 17 are connected with a preset gap such that the control handle 22 does not move when the accessory 15 is unlocked to perform the easy access function.

[0038] The adjustment of the seat rail 200 can be activated by manipulating the second Bowden line B2 via the drive element M7, which is activated by the clamp element M5 via the connecting rod M3 during the operation of the easy-access trigger element 11.

[0039] During the forward tilting of the backrest 14 to the easy-access position II, the second Bowden line B2 is driven by the drive element M7, thereby causing the seat rail to release from 200.

[0040] The solution according to the present invention will be explained in further detail below with the aid of the accompanying drawings.

[0041] Figure 1A A perspective view of a single vehicle seat 100 (without a seat rail system) with a cushion is shown, which may be equipped with an access mechanism M according to the invention.

[0042] Figure 1B Showing according to Figure 1A A perspective view of the structure of a single vehicle seat 100 with a seat rail system, the vehicle seat being equipped with an access mechanism M according to the invention.

[0043] Figure 1C An embodiment of a split-type rear seat (e.g., a second or third row seat) is shown, which has a vehicle seat 100 shown in the same perspective, wherein only a portion of the backrest 14 can be folded and brought to an easy-entry position II. However, the various sub-elements of this rear seat are generally arranged on a seat rail system. Therefore, this rear seat is also equipped with an easy-entry mechanism M.

[0044] Therefore, the following description of easily accessible mechanisms M is generally applicable. Figures 1A to 1C .

[0045] The arrow with reference numeral ① shown in the figure relates to the first side, or reference numeral ① indicates the first viewing direction of the observer looking at the outer side of the overall structure, which will also be referred to as the door side below.

[0046] The arrow with reference numeral ② shown in the figure refers to the second side, or reference numeral ② indicates the second observation direction of the observer looking at the inner side of the overall structure, which will also be referred to as the channel side below.

[0047] Figure 1C An overview of the adapter-style side member 12B has been shown, which is connected to the seat structure 12A of the seat member 12.

[0048] Figure 1C Also shown is an adapter-style side component 14B, which is connected to the seat structure 14A of the backrest 14.

[0049] Figure 1C and Figure 1A and Figure 1B The diagram shows a seat structure 12A with a backrest 14 pivotable about a backrest pivot axis 14Y relative to the seat member 12, at least one pair of seat rails 200 for longitudinally adjusting the vehicle seat 100, and a locking device 200A for locking the at least one pair of seat rails 200.

[0050] The portion of the vehicle seat 100 or the rear seat can be moved longitudinally along the vehicle via seat rails 201, 202 by unlocking the seat longitudinal adjustment lever 12D and can be relocked.

[0051] Figure 1C The first Bowden line B1 for easy access triggering of the easy access function has been shown.

[0052] exist Figure 1C In the diagram, the second Bowden line used for unlocking the easy-access seat rail is indicated by reference numeral B2. The second Bowden line B2 is... Figure 3 , Figure 4 , Figure 5B , Figure 6B , Figure 7B , Figure 8B It can only be clearly seen in the middle. Unlike some solutions in the prior art, the second Bowden line B2 is arranged on the inner side ② of the seat structure 12A of the seat member 12, which will be discussed later.

[0053] The vehicle seat 100 has at least one lockable accessory 15.

[0054] In order to hinge the backrest 14 relative to the seat 12, a non-lockable backrest bearing or a lockable accessory 15 is arranged on the side of the vehicle seat 100 opposite to the accessory 15 (see [reference]). Figures 1A to 1C ).

[0055] These components 15 are connected to the transmission rod 17 (see...) Figure 1B and Figure 1C They are interconnected, so unlocking one accessory 15 always triggers the unlocking of the corresponding other accessory 15.

[0056] The vehicle seat 100 includes an adjustment lever-shaped control 22 pivotable about a backrest pivot axis 14Y. The control 22 is connected to a transmission rod 17 with a preset gap such that rotational movement of the control 22 is transmitted to the transmission rod 17 only after the gap is overcome. The accessory 15, especially the stop accessory, is reversibly unlocked / unlocked by rotational movement about the backrest pivot axis 14Y.

[0057] Therefore, when the operating lever 22 returns to its original position, the accessory 15 is correspondingly locked by the reverse rotation of the transmission rod 17. When the operating lever 22 is released, the return spring F22 (see...) Figure 3 and Figure 5A , Figure 6A , Figure 7A , Figure 8A Ensure that the control handle 22 returns to its initial position.

[0058] The transmission rod 17 is located on the Y-pivot axis 14A in the assembled state and according to Figure 3 The abbreviated diagram is shown.

[0059] To facilitate operation of the access function, at the upper end of the backrest 14 (see...) Figure 1C ) or on the side (see Figure 2 It is provided with an easy-access trigger element, in particular a handle 11, which is configured to trigger the unlocking of the easy-access mechanism, as explained below.

[0060] Figure 2 A vehicle seat 100 is shown with an access mechanism M in its initial position AP.

[0061] Vehicle seat 100 has at least three basic functions:

[0062] In the first basic function, the backrest 14 can be flipped to the loading floor position I or the cargo position.

[0063] In the second basic function, the easy-access position II of the vehicle seat 100 is possible.

[0064] In the third basic function, the vehicle seat 100 can be longitudinally adjusted to the seat longitudinal adjustment position III via the seat guide rails 200; 201, 202.

[0065] The first basic function is that the backrest 14 flips to the loading floor position I:

[0066] Figure 6A The components of the easy-access mechanism M of the main mechanism are shown from the first side ① in the loading floor position I.

[0067] Figure 6B The components of the easy-access mechanism M of the main mechanism are shown from the second side ② in the loading floor position I.

[0068] According to the diagram, the backrest 14 can be flipped to a floor position, also known as a flat position or cargo position. This floor position is typically used to increase the loading space of a motor vehicle. In the floor position, the backrest 14... Figure 6A Counterclockwise and according to Figure 6BThe seat is folded down completely clockwise onto the seat 12 to achieve the flattest possible loading floor. In this case, the backrest 14 is preferably introduced into the vehicle floor such that its back surface forms the flattest possible surface that transitions into the rest of the loading space floor.

[0069] When occupying the easy-access position II, it is also stipulated that accessory 15 should be unlocked for the purpose of flipping the backrest 14.

[0070] However, in the backrest flip of backrest 14, which is not an easy-access function, the seat rail unlocking of 200 is not specified, unlike the easy-access function.

[0071] In order to enable the unlocking of one or more accessories 15 without correspondingly unlocking the seat rail pair 200, a control handle 22 is provided to occupy the floor position and to unlock one or more accessories 15 according to the direction of operation (see beforehand). Figure 5A and Figure 6A The control lever is operated clockwise around the backrest pivot axis 14Y.

[0072] The reversible operation of the control lever 22 overcomes the preload of the tension spring F22 (see...) Figure 3 The force is applied. Pawl 22B ensures that the control handle 22 can only be pivoted at a predetermined angle.

[0073] The pawl 22B is fastened to the adapter 12B on the seat side and has an elongated hole located on the bend as a guide groove. The end of the elongated hole forms a stop for a pin, which extends from the base plate 22A of the operating handle 22 in the assembled state and is engaged in the elongated hole.

[0074] The initial position AP of the backrest 14 is shown from the door side ①. Figure 5A In the middle, the pin of the control handle 22 is attached to the lower left end of the elongated hole in the pawl 22B.

[0075] The loading floor position I of the backrest 14 is shown from the door side ①. Figure 6A In the middle, after the operating handle 22 has been operated, the pin of the operating handle 22 abuts against the upper right end of the elongated hole in the pawl 22B.

[0076] By manipulating the operating handle 22, the pawl 22B is moved around the pawl connecting element 22C arranged in the adapter 12B on the seat side, especially (see...) Figure 6A The pawl 22B pivots clockwise, thereby disengaging from the pawl stop 14D fixedly arranged on the backrest side, so that the backrest 14 passes by the pawl 22B and is flipped onto the seat 12.

[0077] In the easy-entry position II of the vehicle seat 100, the pawl stop 14D constitutes an end stop for the backrest 14 to be in the flip position II. Because the operating lever 22 is not operated in the easy-entry function, the pawl 22B does not disengage from the movement track of the pawl stop 14D fixedly arranged on the backrest side and the pawl stop 14D blocks the backrest 14 in the easy-entry position II (see...). Figure 8A ).

[0078] By manipulating the control lever 22 (clockwise, see...) Figure 5A and Figure 6A Accessory 15 is unlocked, and backrest 14 can be flipped onto seat 12, wherein accessory 15 is relocked after the control lever 22 is released.

[0079] In order for the control handle 22 to return to its initial position AP, the control handle 22 (see...) Figure 3 and Figure 5A In the control handle 22, one side is suspended in the suspension element F22.1, which is disposed on the base plate 22A of the control handle 22, and the other side is suspended in the angular suspension element F22.2, which is fixedly connected to the adapter 12B on the seat side. Fixed disc 23 (see...) Figure 3 and Figure 5A These components, especially the operating handle 22, are rotatably secured to the door side ① of the easy access mechanism M.

[0080] Of course, if the backrest 14 needs to be flipped from the loading floor position I back to the initial position AP and the accessory 15 needs to be unlocked again, the control lever 22 must be operated again (clockwise, see...). Figures 5A to 6A In this case, accessory 15 is unlocked again and locked back into the initial position I after the control lever 22 is released.

[0081] Figure 6B As described above, the components of the easy-access mechanism M of the main mechanism are shown from the second side ② in the loading floor position I.

[0082] As can be seen, (see Figure 6B and Figure 5B Only the unlocking lever M6 has moved relative to the cam element M4 or relative to the connecting rod M3. This unlocking lever, by actuating the operating handle 22, can move, together with the transmission rod 17, about the pivot axis 14Y, initially clockwise toward the cam element M4 by a specific small amount. Therefore, according to... Figure 5B In the initial position AP, a small distance is constructed between the cam element M4 and the unlocking lever M6 so that the unlocking lever M6 can be applied. Figure 5B The pivotal movement that has not yet been implemented in China.

[0083] When the backrest 14 is stationary, the unlocking lever M6 on the second side ② can only move in two ways relative to the backrest 14. Either the unlocking lever M6... Figure 5B Pivot clockwise toward cam element M4 to lock accessory 15, or unlock lever M6 according to Figure 5B The counterclockwise pivoting motion moves away from the cam element M4 in order to unlock accessory 15.

[0084] During normal backrest adjustment, starting from its initial position AP, the backrest 14 can be moved back a small amount. In this case, the cam element M4... Figure 5B As the backrest 14 pivots counterclockwise, it moves toward the unlocking lever M6. From the perspective of the cam element M4, the unlocking lever M6, together with the transmission rod 17, also moves clockwise toward the cam element M4 by a certain small amount as it is unlocked by the operating handle 11.

[0085] By manipulating the operating handle 22 (beyond its clearance), the transmission rod 17, along with the unlocking lever M6, according to... Figure 6A Rotate clockwise. Through the pivoting motion of the backrest 14, the cam element M4... Figure 6B Stay away from the unlock lever M6, as if in Figure 6B Zhongyu Figure 5B As can be seen. In short, in order to unlock accessory 15, the transmission rod 17, together with the unlocking lever M6 arranged thereon, always moves in the same direction of motion.

[0086] Between cam element M4 and unlocking lever M6 Figure 5B The visible distance is primarily used to achieve normal backrest tilt adjustment starting from the initial position AP of the backrest 14 (rather than flipping the backrest towards the loading floor position I). This distance corresponds to the desired adjustment range and the existing tolerances in the backrest tilt adjustment.

[0087] Subsequently, unlock lever M6 (according to) Figure 6B ) Keep it in its unlocked position and flip the backrest 14 onto the seat 12 (compare ( Figure 6A and Figure 6B As a result, the unlocking lever M6, along with the components M1, M2, M3, M4, M5, M7, and M8 of the easy-access mechanism arranged on the backrest side adapter, moves away from the unlocking lever M6 by a certain large amount in a clockwise direction due to the pivoting of the backrest side adapter 14B.

[0088] During the flipping of the backrest 14 onto the seat 12, the other components of the access mechanism M remain in their initial position AP, as particularly by comparison. Figure 5B and Figure 6B The components can be seen as described.

[0089] The following section will discuss in detail the unlocking lever M6 and the cam element M4 regarding the easy-access mechanism M.

[0090] The second basic function, namely the easy-entry position II of the vehicle seat 100, should make it easy to enter the row of seats behind the vehicle seat when the easy-entry position is flipped and the seat is longitudinally adjusted to the easy-entry position II.

[0091] When the easy-entry function is operated, the unlocking accessory 15 and the seat rail pair 200 set for seat longitudinal adjustment are unlocked. As a result, when viewed from the perspective of the occupant of the vehicle seat 100, the backrest 14 is flipped forward and moved forward a certain amount in the longitudinal direction of the vehicle by the seat longitudinal adjustment until the easy-entry position II is reached, thereby achieving the maximum entry area.

[0092] Contact below Figure 3 and Figure 4 First, let's mention the other components of the easy-access mechanism M, among which... Figures 5A to 8B The text further describes the structure and function of components M1, M2, M3, M4, M5, M6, M7, and M8.

[0093] As can be seen below, see the components of the easy-to-access mechanism M. Figure 3 and Figure 4 In the assembled state, it is positioned to the left of accessory 15 and as shown in Figure 5B , Figure 6B , Figure 7B , Figure 8B As shown, all components are therefore arranged on the second side ② of the accessory, or in this embodiment, on the passage side. This is considered one of the many key advantages, as the components of the access mechanism M are arranged in a well-protected position.

[0094] Of course, these components do not necessarily have to be arranged on one or the second side of the fitting 15, but such an arrangement is considered advantageous. This is explained by example only: when the backrest structure 14A of the backrest 14 allows, the connecting rod M3 can also be positioned / arranged on the opposite side of the fitting 15.

[0095] The access mechanism M designed according to this embodiment (as explained) is located on the left side of accessory 15 (backrest adjuster). Figure 3 and Figure 4 (Viewed from left to right) Includes the following components:

[0096] - Connecting rod return spring M1,

[0097] - Deflection element M2,

[0098] - Connecting rod M3,

[0099] - Cam element M4,

[0100] - Clamping element M5,

[0101] - Unlock lever M6,

[0102] - Drive component M7,

[0103] - Central connecting element M8,

[0104] - Bowden Line B1, B2.

[0105] The Bowden lines B1 and B2, which combine these components M1, M2, M3, M4, M5, M6, M7, and M8 as components of the overall mechanism having basic functions I, II, and III, advantageously constitute an easy-access motion system, wherein, in particular, the easy-access mechanism M does not require complexly manufactured and expensive components, as will be explained below.

[0106] As explained, all components M1, M2, M3, M4, M5, M6, M7, and M8 arranged on the second side ② of the accessory mechanism of accessory 15 are initially in the initial position AP, which is in Figure 5B As shown in the image.

[0107] Easy access is controlled in a known manner by (pulling or pivoting), that is, by manipulating the easy access trigger element 11 (see...). Figure 1C and Figure 2 Especially the handle. This pulls the Bowden wire core B1.3 of the first Bowden wire B1 (see...) Figure 5B and Figure 8B ).

[0108] Connecting rod M3:

[0109] Bowden conductor B1.3 is suspended in connecting rod M3, and particularly in element M1.1, which is movably arranged on backrest-side adapters 14B, 14B'.

[0110] According to the invention, the connecting rod M3 has a guiding device, which is designed and shown in this embodiment as an elongated slot. Of course, other methods for guiding the connecting rod M3 are conceivable and feasible.

[0111] Through this guide, the connecting rod M3 in this embodiment is reversibly translated relative to the connecting rod guide element which is fixedly arranged in the backrest side adapter 14B, 14B', and the connecting rod guide element, in particular, has at least one guide pin according to the embodiment.

[0112] Return spring M1 and connecting rod M3:

[0113] Connecting rod return spring M1 (see) Figures 5B to 8BOn the one hand, it is suspended on the backrest side adapter 14B, 14B' by the suspension element M1.2, and on the other hand, it is suspended on the connecting rod M3 by the first suspension element M1.1. The Bowden wire core M1.1 is also suspended in the first suspension element M1.1.

[0114] Connecting rod M3 and central connecting element M8:

[0115] By manipulating the connecting rod M3, the central connecting element M8 is driven. In one embodiment, the central connecting element is, for example, fixedly arranged on the end side of the connecting rod M3.

[0116] Connecting rod M3, central connecting element M8, deflecting element M2, and cam element M4:

[0117] The central connecting element M8 is rotatably accommodated both in the elongated slot of the first lever arm of the deflecting element M2 and in the opening of the cam element M4. The central connecting element M8 protrudes from the connecting rod M3 on both sides and thus, with its flanged end, is engaged in the elongated slot of the deflecting element M2 on one side and in the opening of the cam element M4 on the other side.

[0118] The central connecting element M8 is preferably a simple pin with opposing pin ends.

[0119] The connection between components M2, M3 and M4 is correspondingly and permanently (not shown), thus creating a central fulcrum (at M8), which is translated relative to the backrest side adapters 14B, 14B' when the connecting rod M3 is pulled during the operation of the easy-access mechanism M.

[0120] The deflection element M2 and therefore the elongated groove of the deflection element M2 are located in the second plane above the connecting rod M3.

[0121] The cam element M4 and therefore the opening of the cam element M4 are located in the first plane below the connecting rod M3.

[0122] Unlock lever M6, cam element M4, and deflection element M2:

[0123] The unlocking lever M6 is located in the plane of the cam element M4. The cam element M4 is rotatably located on the cam connecting element M4.3, which is fixedly arranged in position, and in particular on the pin, which is arranged in the backrest side adapter 14B, 14B'.

[0124] In the assembled state, the cam element M4 is rotatably and permanently secured on the cam connecting element M4.3.

[0125] During the movement of the deflection element M2 around the pivot axis M2Y, the translational movement of the connecting element M3 causes the cam element M4 to move around the pivot axis M4Y.

[0126] The deflection element M2 is rotatably arranged on the fixed deflection connecting element M2.1, in particular a pin, in such a way that it can rotate on the pivot axis M2Y. The pin is fixedly arranged in the backrest side adapter 14B, 14B'.

[0127] Deflection element M2 and clamping element M5:

[0128] In addition to the elongated slot, the deflecting element M2 also has a shorter elongated slot in the second lever arm. This shorter elongated slot is movably connected to the clamping element M5 by an additional deflecting connecting element M2.1, which is fixedly arranged in a secure position in the assembled state and cannot be lost. This additional deflecting connecting element is also a pin. Therefore, during the movement of the deflecting element M2 around the pivot axis M2Y, the shorter elongated slot also moves, thereby activating the clamping element M5, which is translatably arranged in the clamping guide element 14C at the clamping element support end M5.2. The clamping guide element is fixedly arranged on the backrest side adapters 14B and 14B'.

[0129] In other words, once the deflection element M2 moves, the clamping element M5 will translate relative to the deflection element M2, as will be explained later.

[0130] A clamping element hook M5.1 is arranged on the other end of the clamping element M5. The clamping element M5 has a support end M5.2, which is movably arranged in the clamping guide element 14C in the assembled state.

[0131] Looking along the longitudinal extension of the clamping element M5, opposite the support end M5.2, there is a clamping element hook M5.1, which translates at a certain point in time, as will be explained later.

[0132] Furthermore, the clamping element M5 has a region in which the deflection connecting element M5.3, and especially the pin which is also designed as a deflection connecting element, connects the clamping element M5 to the deflection connecting element M5.3 and thus to the deflection element M2 in the region of the shorter elongated slot of the deflection element M2.

[0133] As specified herein, the clamping element M5 can be substantially translated. For this purpose, the deflecting connecting element M5.3, particularly the connecting pin, is connected to the clamping element M5 such that the deflecting connecting element M5.3 has some clearance in the area of ​​the shorter elongated slot of the deflecting element M2, allowing the clamping element M5 to pivot slightly about the longitudinal axis of the deflecting connecting element M5.3. To allow for this slight possible pivoting movement of the clamping element M5, space is correspondingly provided in the clamping guide element 14C. A spring element, not shown, between the clamping guide element 14C and the clamping element M5 ensures that the clamping element M5 is always pressed against the clamping guide element 14C.

[0134] Unlock lever M6 and cam element M4:

[0135] Another important point is that the cam element M4, located in the plane of the unlocking lever M6, is in the initial position AP (see...). Figure 5B The cam M4.2 is aligned with the unlocking lever, and this cam is located at the end of the pivot axis M4Y of the cam element M4, that is, on the pivot axis side (see...). Figure 7B (See attached figures M4Y, M4.1) and the opposite ends of the cam elements (see attached figures). Figure 7B (between the attached diagram mark M8).

[0136] When the easy-access mechanism M is operated, the cam M4.2 substantially contacts the side profile of the unlocking lever M6 located in the first plane of the unlocking lever M6 and the cam element M4, as will be explained later. As the unlocking lever M6 moves about the pivot axis 14Y, the fitting 15 is opened, which coincides with the backrest pivot axis 14Y of the fitting 15.

[0137] The unlocking lever M6 is torsionally connected to the transmission rod 17. In other words, the unlocking lever M6 moves along with the transmission rod 17 with each pivoting motion.

[0138] When cam M4.2 acts on unlocking lever M6, it causes relative movement of unlocking lever M6 relative to backrest side adapters 14B, 14B', wherein cam element M4 has an end connected to central connecting element M8. Cam element M4 has cam element end M4.1 (see...) Figures 5B to 8B The end of the cam element can move about the pivot axis M4Y relative to the backrest side adapters 14B and 14B'.

[0139] The adapter extension element 14B' of the backrest side adapter 14B:

[0140] In this embodiment, the backrest-side adapter 14B includes an adapter extension element 14B', on which the deflection element M2 is pivotally arranged via a deflection connection element M2.1.

[0141] Furthermore, the cam element end M4.1 of the cam element M4 is arranged to be rotatably supported relative to the cam connecting element M4.3 by means of the cam connecting element M4.3, which is fixedly arranged on the adapter extension element of the backrest side adapter 14B'.

[0142] The cam element M4 can pivot about the pivot axis M4Y about the cam connecting element M4.3 so that the rotatable cam element M4, the rotatable deflector element M2, and the translational connecting rod M3 are movable relative to each other.

[0143] The adapter extension element 14B' also includes a clamp guide element 14C (see Figure 3 and Figures 5B to 8B The clamping element M5 is substantially translatably supported within the clamping guide element. The adapter extension element 14B' is fixedly connected to the backrest-side adapter 14B. The adapter extension element 14B' disclosed herein represents only one possible design. Components arranged on the adapter extension element 14B' can still be components of the integrally designed backrest-side adapter 14B.

[0144] How the easy-to-access mechanism M works:

[0145] Other Figure 5A , Figure 5B ; Figure 7A , Figure 7B ; Figure 8A , Figure 8B The working principle of the access mechanism M is discussed in relation to describe the kinematic relationships of components M1, M2, M3, M4, M5, M6, M7, and M8, and thus their functions.

[0146] according to Figure 5A The component of the main mechanism's easy-access mechanism M, shown from the first side ①, is in its initial position AP.

[0147] Viewed from the first side ① Figure 5A In the middle, only the first Bowden line B1 of the easy-entry mechanism M is visible in its initial position AP.

[0148] according to Figure 5B The components M1, M2, M3, M4, M5, M6, M7, and M8 of the main mechanism's easy-entry mechanism M, shown from the second side ②, are also in their initial positions AP.

[0149] Figure 7A When activating the easy access function from the initial position AP to the easy access position II, the component B1 of the easy access mechanism M of the main mechanism is shown from the first side ① in the activated position AP→II.

[0150] Viewed from the first side ① Figure 5A In the middle, only the first Bowden line B1 of the easy-entry mechanism M in its initial position AP is visible.

[0151] Figure 7B When activating the easy-entry function from the initial position AP to the easy-entry position II, the components M1, M2, M3, M4, M5, M6, M7, M8 and B1, B2 of the easy-entry mechanism of the main mechanism are shown from the second side ② in the activated position AP→II.

[0152] First, the connecting rod M3 is manipulated by translating the Bowden wire core B1.3 of the first Bowden wire B1 (see...). Figure 7B (The arrow in the connecting rod M3) thereby drives the central connecting element M8, which is arranged on the end side of the connecting rod M3 and, according to this embodiment, is arranged in a fixed position, for example.

[0153] Therefore, the translational movement of connecting element M8 simultaneously drives deflection element M2 to pivot around M2Y (see...). Figure 7B (The arrow in the middle) and cam element M4 around M4Y (see arrow) Figure 7B (The arrow in the middle) pivots, and the translational movement of the connecting element is introduced by the connecting rod M3 by pulling the Bowden line B1 after operating the handle 11.

[0154] During the movement of connecting element M8, cam element M4, located in the plane of unlocking lever M6, moves from its initial position AP with cam M4.2 (see...). Figure 5B and Figure 7B The lever 16 is struck, especially the end of the lever 16, causing the lever 16 to rotate around 14Y and the transmission rod 17 to rotate, thereby unlocking the accessory 15.

[0155] This unlocking mechanism allows the backrest 14 to flip onto the seat 12 (while the unlocking lever M6 does not move with it), but only to a certain extent until the pawl 22B contacts the pawl stop 14D fixedly arranged on the backrest side on the pawl 22B's movement track. In the easy-access function, the pawl 22B is not operated by the lever 22 and thus remains in its initial blocking position.

[0156] exist Figure 7B As can be seen from the arrow at the gripper element M5, the gripper element M5, with its supporting end M5.2, has been translated relative to the gripper guide element 14C (in... Figure 7B (Move downwards from the middle).

[0157] The support end M5.2 of the clamp guide element 14C of the clamp element M5 is located opposite the clamp element hook M5.1.

[0158] The clamping element M5 is movably connected to the clamping element M2 in the region of the shorter elongated slot of the deflecting element M2. The clamping element M5 is translated via the deflecting connecting element M5.3, which is also designed as a pin (see...). Figure 7B The arrow in the diagram moves in such a way that the gripper element hook M5.1 is brought to the position in front of / on top of the drive element M7, but is not yet engaged in the drive element M7, as will be explained below.

[0159] Figure 8A From the first side ①, the first Bowden line B1 of the access mechanism M of the main mechanism in the easy-access position II is shown.

[0160] Viewed from the first side ① Figure 8A In the middle, only the first Bowden line B1 of the easy-entry mechanism M in easy-entry position II is visible, which is the same as the initial position AP (see Figure 5A The difference lies in the Bowden wire core B1.3 that is now pulled out.

[0161] Figure 8B From the second side ②, the components M1, M2, M3, M4, M5, M6, M7, and M8 of the access mechanism M of the main mechanism in the access position II are shown.

[0162] After unlocking accessory 15 of backrest 14, the operator of backrest 14 begins to flip backrest 14 within the easy-access function of easy-access mechanism M, as if by means of the backrest side adapters 14B, 14B'. Figure 8A The counter-clockwise arrow in the middle and in Figure 8B As shown by the clockwise arrow in the image.

[0163] As long as the backrest 14 is in the free pivoting area, the unlocking lever M6 remains in its unlocked position, which is ensured by corresponding measures within the fitting 15, which are not the subject of this invention.

[0164] When the backrest 14 returns to its initial position AP, that is, when the backrest 14 is no longer in the free pivoting region between the initial position AP and the easy-entry position II, the transmission rod 17 and therefore the unlocking lever M6 return to their original positions. Figure 5B The initial position AP.

[0165] Since the central connecting element M8 is rotatably accommodated in both the elongated slot of the first lever arm of the deflecting element M2 and the opening of the cam element M4, the deflecting element M2 and the cam element M4 move together with the backrest side adapters 14B and 14B' during the pivoting motion of the backrest 14 about the pivot axis 14Y.

[0166] Therefore, according to Figure 7BThe pre-positioned drive element M7 is now engaged in the drive element M7 because when the backrest 14 pivots clockwise around the pivot axis 14Y, the gripper element hook M5.1 of the gripper element M5 drives the drive element, thereby pulling the Bowden wire core B2.3 of the second Bowden wire B2. Thus, when the second Bowden wire B2 has been manipulated, the vehicle seat 100 or the rear seat or a part of the rear seat can finally be adjusted longitudinally.

[0167] The locking device 200A is opened by the second Bowden line B2, and the upper guide rail 201 (and therefore the vehicle seat 100) can move a certain amount relative to the lower guide rail 202 fixed to the vehicle body in the longitudinal direction of the vehicle.

[0168] If the operator releases the control lever 11, the connecting rod return spring M1 ensures the return of the connecting rod M3 and the components M2, M4, M5, M6, M7, and M8 of the easy-access mechanism. This connecting rod return spring is connected to the suspension elements M1.1 and M1.2 (see...). Figures 5B to 8B On one hand (M1.2) it is suspended on the backrest side adapter 14B, 14B' and on the other hand (M1.1) it is suspended on the connecting rod M3.

[0169] When the backrest 14 returns to its initial position AP, the connecting rod M3 and the components M; M2, M4, M5, M6, M7, and M8 of the easy-access mechanism return to their original positions.

[0170] As long as the gripper element hook M5.1 of the gripper element M5 is connected to the drive element M7, the gripper element M5 cannot be retracted, and therefore the connecting rod M3 cannot return to its initial position. Thus, as long as the easy-access function is activated, the operating handle 11 and therefore the accessory 15 also remain in their open, adjustable position.

[0171] The return force required by the connecting rod return spring M1 to retract the connecting rod M3 is obtained by the previous pulling of the connecting rod M3 (see...). Figure 7B This tension is generated by the return spring M1 of the connecting rod. When the backrest 14 returns to its initial position AP as described above, especially after the gripper element hook M5.1 of the gripper element M5 is no longer connected to the drive element M7, the return force acts on the connecting rod M3 and the components M2, M3, M4, M5, M6, M7, and M8 of the easy-access mechanism in a return manner.

[0172] The third basic function is the longitudinal adjustment of the vehicle seat 100 to seat longitudinal adjustment position III:

[0173] In the third basic function, the vehicle seat 100 can be adjusted longitudinally via seat rails 200; 201, 202.

[0174] The vehicle seat 100 includes a pair of seat rails 200, which includes an upper rail 201 and a lower rail 202 fixed to the vehicle body.

[0175] Within the first adjustment range, the seat longitudinal adjustment lever 12D is used for seat longitudinal adjustment independently of the backrest 14 adjustment function and easy-access adjustment. The locking device 200A is opened by manipulating the seat longitudinal adjustment lever 12D (see...). Figure 1C And the upper guide rail 201 (and therefore the vehicle seat 100) can move relative to the lower guide rail 202 fixed to the vehicle body in the longitudinal direction of the vehicle by a determined amount.

[0176] When the second Bowden line B2 is operated, additional longitudinal seat adjustment becomes possible, thereby opening the locking device 200A and allowing the upper guide rail 201 (and thus the vehicle seat 100) to move relative to the lower guide rail 202 fixed to the vehicle body in the longitudinal direction of the vehicle. The operation of the second Bowden line B2 is part of the accessibility function of the access mechanism M, as explained previously.

[0177] Comparison of easily accessible mechanism M with existing technologies:

[0178] Patent document EP 3 325 310 B1 describes an easy-access mechanism that requires a drive element, a pawl, and an actuating element to flip the backrest and unlock the locking device of the seat rail pair.

[0179] According to the patent document, a vehicle seat has a pawl on a drive element rotatably supported about an axis. When the backrest is pivoted to an easy-entry position, the pawl can be engaged by a drive element arranged on the backrest, which is carried by the movement of the backrest. The drive element has a cam that engages with the pawl. The pawl has a first profile at which the drive element contacts the pawl when the backrest is pivoted forward to the easy-entry position. Furthermore, the pawl has a second and a third profile. When the backrest is flipped downwards, the drive element contacts the pawl at a first contact point in its basic position, particularly the first profile of the pawl, and drives the pawl in its movement until the pawl, particularly the second profile of the pawl, strikes a first end stop integrated into the rear base. This first end stop defines a first boundary of the pivoting area of ​​the backrest in the easy-entry position. During the pawl's actuation, the pawl is supported on the cam of the drive element via a section away from the drive element through the second contact point and drives the drive element according to the pivoting movement of the backrest. If the drive element and the pull element connected to the drive element are rotated according to the pivoting motion of the backrest, the Bowden line is actuated. The Bowden line acts on and unlocks the locking device of the seat rail pair. As can be seen from this description, the contact between the pawl and the drive element is affected by the profile of the corresponding element; therefore, precise design of the components during manufacturing is necessary to ensure the uninterrupted interlocking of components according to the prior art's access mechanism. Furthermore, the drive element is an annular component with a cam designed to project laterally out of the ring. The manufacture of such an annular drive element is also very costly and expensive, as it is typically a laser-manufactured component. The annular drive element must be precisely guided within the overall mechanism and therefore must be manufactured with high precision, as explained. For this purpose, the annular drive element is specifically supported on the base plate of the overall mechanism, which is also a complex component and can only be manufactured expensively and laboriously.

[0180] In the solution according to patent document DE 2017 218 125 A1, the rotating ring 50 is also supported on the substrate in a manner that allows it to rotate about the pivot axis of the backrest. Furthermore, a complex access control element is required within the access mechanism, which is connected to a pawl similar to the pawl according to the patent document.

[0181] The overall mechanism proposed according to the invention, and especially the access mechanism M or its components M1, M2, M3, M4, M5, M6, M7, and M8 proposed according to the invention, can all be constructed significantly simpler and therefore manufactured more inexpensively. Components M2, M3, M4, M5, M6, M7, and M8 can be manufactured with particularly high manufacturing tolerances, wherein, despite this, the desired function is still reliably guaranteed. In particular, no ring-shaped element is required within the access mechanism M.

[0182] Unlike existing technologies, the triggering for activating the easily accessible mechanism M is based on a simple method. Figure 7A and Figure 7B This occurs through the translational movement of the connecting rod M3, which drives the deflection element M2 and the cam element M4 in the manner described above. The cam element M4 manipulates the unlocking lever M6, which releases the easy-access mechanism M in order to release the backrest 14 that is to be rotated around the pivot axis 14A.

[0183] Therefore, the event that triggers the easy-access mechanism M in the main mechanism by flipping the backrest 14 (after manipulating the handle in the area of ​​the easy-access trigger element 11, especially the backrest 14, via the connecting rod M3) ultimately occurs through the mechanical contact of the cam M4.2 of the cam element M4 with the unlocking lever M6, which rotates about the pivot axis 14Y in the process.

[0184] The triggering event for longitudinal seat adjustment, namely the manipulation of the second Bowden line B2, first occurs through the translational movement of the clamp element M5 and the pre-positioning of the clamp element M5 on the drive member M7, and finally (after mechanically contacting the cam M4.2 of the cam element M4 with the unlocking lever M6 and moving the unlocking lever M6 to release the pivoting movement from the initial position AP of the backrest 14 to the easy-access position II of the backrest 14) occurs through the pivoting movement of the backrest 14 about the pivot axis 14Y, thereby the clamp element hook M5.1 ultimately actuates the drive member M7, and the locking device 200A of the seat guide 200 is reversibly released.

[0185] List of reference numerals

[0186] 100 vehicle seats

[0187] M Easy Access Organization

[0188] M1 connecting rod return spring

[0189] M1.1 suspension elements

[0190] M1.2 suspension elements

[0191] M2 deflection element

[0192] M2Y pivot axis

[0193] M2.1 deflection connection element

[0194] M3 connecting rod

[0195] M4 Cam Element

[0196] M4.1 Cam Element End

[0197] M4.2 Cam

[0198] M4.3 Cam Connector

[0199] Pivot axis of M4Y cam element

[0200] M5 clamping components

[0201] M5.1 clamping element hook

[0202] M5.2 clamping element support end

[0203] M5.3 deflection connection element

[0204] M6 unlock lever

[0205] M7 drive components

[0206] M8 Central Connector

[0207] AP initial position

[0208] I Loading Floor Position

[0209] II. Easy-to-access location

[0210] III. Seat longitudinal adjustment position

[0211] 11 Easy-to-use trigger elements, handles

[0212] 12-seater

[0213] 12A Seat Structure

[0214] 12B seat side adapter

[0215] 12D Seat Longitudinal Adjustment Lever

[0216] 14 backrests

[0217] 14A Backrest Structure

[0218] 14B Backrest Side Adapter

[0219] 14B' adapter expansion element

[0220] 14C gripper guide element

[0221] 14D ratchet stop

[0222] 14Y Backrest Pivot Axis

[0223] 15 accessories

[0224] 17 transmission rods

[0225] 22 control handles

[0226] F22 First Spring Element

[0227] F22.1 suspension elements

[0228] F22.2 suspension elements

[0229] 22A substrate

[0230] 22B pawl

[0231] 22C ratchet connector

[0232] 23 Fixed disc

[0233] B1 First Bowden Line, Easy Access Trigger Device

[0234] B1.1 Bowden Components

[0235] B1.2 Bowden Fastening Device

[0236] B1.3 Bowden wire core

[0237] B2 Second Bowden Line, Easy Access Seat Rail Unlocking Device

[0238] B2.1 Bowden component

[0239] B2.2 Bowden Fastening Device

[0240] B2.3 Bowden wire core

[0241] 200 seat rails

[0242] 201 Seat Upper Rail

[0243] 202 Seat Lower Guide Rail

[0244] 200A Locking Device

[0245] ①First side and first viewing direction of accessory 15

[0246] ②Second side and second observation direction of accessory 15

Claims

1. A seat having a backrest (14) pivotable about a backrest pivot axis (14Y), at least one pair of seat rails (200) for longitudinal adjustment of the seat, and a locking device (200A) for locking the at least one pair of seat rails (200), wherein, The seat includes at least one lockable fitting (15) for hinged to the backrest (14) relative to the seat (12), and the backrest (14) is pivotable from an initial position (AP) to an easy-entry position (II) that can be occupied for easier access to the rear seat, wherein the seat has an easy-entry mechanism (M). The easy-access mechanism (M) is characterized by having a drive element in the form of a connecting rod (M3), which is indirectly or directly supported on the backrest structure (14A) and can be translated relative to the backrest (14) by reversible manipulation of the first Bowden line (B1), wherein the connecting rod (M3) acts on a central connecting element (M8) when manipulated, which is connected to a deflecting element (M2) and a cam element (M4), which are arranged to be indirectly or directly supported on the backrest structure (14A) in a manner that allows them to pivot simultaneously about their respective pivot axes. • The reversible translational motion of the connecting rod (M3) causes a reversible pivoting motion of the cam element (M4) about its pivot axis (M4Y), which strikes the unlocking lever (M6), which is connected indirectly or directly to the fitting (15), such that displacement of the unlocking lever (M6) causes the fitting (15) to unlock, allowing the backrest (14) to flip from its initial position (AP) to the easy-access position (II), wherein • The reversible translational movement of the connecting rod (M3) simultaneously causes the reversible pivoting movement of the deflecting element (M2) about its pivoting axis (M2Y). During its pivoting movement, the deflecting element drives a reversibly movable clamping element (M5), which is indirectly or directly supported on the backrest structure (14A) in a translationally movable and pivotably movable manner with a small gap. • The deflection element (M2) is movably connected to the gripper element (M5) such that the gripper element (M5) is pre-positioned on the drive member (M7) of the second Bowden line (B2), wherein • The clamping element (M5) clamps the drive member (M7) only when the backrest (14) is flipped to the easy-access position (II), wherein • The prepositioned clamping element (M5) reversibly drives the drive member (M7) and manipulates the second Bowden line (B2) connected to the drive member (M7) when the backrest (14) is flipped, thereby reversibly unlocking the locking device (200A) of the seat rail pair (200) and causing longitudinal adjustment of the seat.

2. The seat according to claim 1, characterized in that, When the unlocking of the accessory (15) occurs via the unlocking lever (M6) which is pivotable about the backrest pivot axis (14Y), the clamping element (M5) is completed by a translational movement of the deflection element (M2) operated by the connecting rod (M3) and thus the clamping element (M5) is prepositioned on the drive member (M7).

3. The seat according to claim 1, characterized in that, The central connecting element (M8) is a through pin or fixing pin on the connecting rod (M3), the pin end of which is located on both sides of the end of the connecting rod (M3) opposite to the end of the connecting rod (M3) on the Bowden line side, along the direction of the backrest pivot axis (14Y).

4. The seat according to claim 3, characterized in that, The first lever arm of the deflecting element (M2) has an elongated slot, in which the end of a pin of the central connecting element (M8) is fitted into the elongated slot so that the rotatable deflecting element (M2) and the translationally movable connecting rod (M3) are movably arranged relative to each other.

5. The seat according to claim 4, characterized in that, The second lever arm of the deflecting element (M2) has a shorter elongated slot than the elongated slot in the first lever arm, wherein the end of the deflecting connecting element (M5.3) of the gripper element (M5) is fitted into the shorter elongated slot so that the rotatable deflecting element (M2) and the translationally movable gripper element (M5) are movably arranged relative to each other.

6. The seat according to claim 1, characterized in that, The cam element (M4) has two cam element ends (M4.1). When viewed along the longitudinal extension of the cam element, a cam (M4.2) is arranged between the two cam element ends. The cam is arranged on the cam element (M4) such that the cam (M4.2) is aligned with the unlocking lever (M6) in the assembled state.

7. The seat according to claim 6, characterized in that, The end of the cam element (M4) opposite to the cam element pivot axis (M4Y) on the back side of the cam element (M4) has a receiving opening, into which the other pin end of the central connecting element (M8) is inserted, so that the rotatable deflector element (M2) and the rotatable cam element (M4) are movably arranged relative to each other.

8. The seat according to claim 6, characterized in that, The cam element end (M4.1) of the cam element (M4) is rotatably supported by a cam connecting element (M4.3), which is fixedly and indirectly arranged on the backrest side adapter (14B, 14B') connected to the backrest structure (14A) or directly arranged on the backrest structure (14A). Thus, the cam element (M4) can pivot about the cam element pivot axis (M4Y) about the cam connecting element (M4.3), so that the rotatable cam element (M4), the rotatable deflector element (M2), and the translational connecting rod (M3) are movable relative to each other.

9. The seat according to claim 6, characterized in that, When the cam element (M4) pivots about the cam element pivot axis (M4Y) from its initial position (AP) to the easy-access position (II), the cam (M4.2) reversibly acts on the unlocking lever (M6) so that the unlocking lever (M6) causes the accessory (15) to unlock in the easy-access position (II).

10. The seat according to claim 1, characterized in that, The connecting rod (M3), the deflection element (M2), the cam element (M4), and the clamping element (M5) are directly connected to the backrest structure (14A), or indirectly connected to the backrest structure (14A) through backrest side adapters (14B, 14B') that are directly connected to the backrest structure (14A).

11. The seat according to claim 1, characterized in that, The cam element (M4), the unlocking lever (M6), and the clamping element (M5) are arranged in a first plane between the connecting rod (M3) and the backrest structure (14A) or between the connecting rod (M3) and the backrest side adapters (14B, 14B') arranged on the backrest structure (14A).

12. The seat according to claim 1, characterized in that, The deflection element (M2) is arranged in a second plane above the connecting rod plane of the connecting rod (M3), and the connecting rod (M3) moves in the connecting rod plane.

13. The seat according to claim 1, characterized in that, The connecting rod (M3) has an elongated groove so that the connecting rod (M3) can be reversibly translated relative to the connecting rod guide element, which is fixedly arranged on the backrest structure (14A) or on the backrest side adapter (14B, 14B').

14. The seat according to claim 1, characterized in that, The clamping element (M5) is arranged such that its supporting end (M5.2) is translatably supported in the clamping guide element (14C) extending longitudinally along the clamping element (M5), the supporting end of the clamping element being opposite to the clamping element hook (M5.1), wherein the clamping guide element (14C) is directly arranged on the backrest structure (14A) or indirectly arranged on the backrest side adapter (14B, 14B') connected to the backrest structure (14A).

15. The seat according to claim 1, characterized in that, All components (M1, M2, M3, M4, M5, M6, M7, M8) of the access mechanism (M) are arranged on one side (②) of the accessory (15).

16. The seat according to claim 1, characterized in that, The seat is a vehicle seat (100).

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