JPS58206428A - Adjustable double latch assembly - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seat assembly for a motor vehicle, in which the height of the front and rear parts of the seat support relative to the base can be vertically adjusted. Concerning solids.

The prior art discloses manually adjustable seat assemblies in which the height of the front and rear seats of the seat support member can be adjusted independently. For example, Po5h p U.S. Pat.
an assembly in which the angular position of each lever arm adjusts the height between either the front or the rear of the seat support with respect to the base; The lever arm can be latched in the desired angular position by a latching member, and the entire latching assembly is selectively engaged with a notch in the inner end of the lever arm. A pair of substantially horizontal hooks that are pivotable about substantially vertical axes to meet each other include metal plates. The kake has a gold plate, but can be selectively detached from the paddle arm: the kake, the kake, and the metal plate can be selectively detached from each other.

Similarly, Hom1sr $ U.S. Patent No. 5.692.
No. 271 includes at least a pair of arms pivotally connected to each other and extending inwardly between the base and the seat support, and at least a pair of arms extending inwardly from each other so as to circulate around the base. A pair of latches are pivotally connected to the seat support and on the inside of the arm, with a mating end and an optional latching opening, adapted to permit its rotation when activated. A seat assembly having a metal plate is disclosed. 1rIl@
The link is pivoted with an ijM support and moves from the linkage part? Through the hook is connected to the metal plate, therefore, the rotation of the control link around the Shin; The hook can be pivoted to effect the removal of one of the metal plates from the associated lever arm. The lever arm has a notch or slot with a date/4, and each hook has a metal plate that fits into the notch so that rotation of the metal plate moves the teeth from the Q-4 slot. Robinson rice 74mg3,669,598
No. 5,993,902 discloses an adjustable seat assembly having two levers on each side of the assembly. The locking link and the hook are such that the lever pivots and thereby selectively allows the vertical position of the seat support member to be adjusted.
Fixed to opposite sides of the seat assembly. A torsion bar is connected to a lever at the rear of the canopy. The rear lever is energized to pivot in such a manner as to raise the rear portion of the seat support member.

Other common seat assemblies of the type to which this invention relates are U.S. Pat. No. 5,662,984 (Roblnson et al.);
No. 5.572,624 (Holdampf et al.), No. 5
, No. 109, 622 (Hsyl Jr.), No. 3.1
81.8!11 (Po5h) s No. 3.405.9
No. 011 (Roblnson), and No. 5.055,
No. 627 (Homler).

The purpose of the present invention is to provide a hook that is simple to manufacture, assemble and operate, and that produces a large amount of frictional resistance when engaged and a small amount of frictional resistance when disengaged, and that the hook includes a complete mechanism. It is to provide an improved adjustable seating area throughout.

Another object of the present invention is to provide a hook that is inexpensive and has few moving parts, yet at the same time has the strength and locking ability necessary to provide effective operation of the seat assembly. An object of the present invention is to provide an improved adjustable seat assembly that includes.

Another object of the present invention is to provide an improved adjustable seat assembly including a full hook mechanism that is relatively easy to adjust. In order to achieve this, a 21-seat solid body constructed according to the present invention can be constructed in accordance with the present invention.
It includes a base, a seat support, and first and second sector-shaped lever arms, each lever arm being pivotally coupled to the base at one end for rotation about an axis transverse to the base. The west ends of the lever arms extend inwardly from each other. The transverse rod means are connected to the first and second levers for independently adjusting the height between the base and a longitudinally spaced point along the seat support by rotation of the lever arm. Each of the arms is axially connected to the seat support at a point midway between its 2i portions. The first and second lever plates are pivotally coupled to the seat support for rotation about their respective lateral transverse lines and are selectively connected to the other ends of the first and second lever arms, respectively. It is engageable and prevents its rotation when engaged. First, second and second camming plates
are pivoted to the seat support for rotation about their respective transverse axes at a point midway between their ends, and the first and second latches are adapted to transport the metal to the first and second lever arms, respectively. The first and second latches are selectively bondable to gold for positive locking. A single IvlJ instantaneous IJ link is pivotally connected to the seat support and has a lost motlon connection to the first and second camming plates.
s) An actuator is coupled to the control link such that the control link pivots 41 to selectively disengage both metal plates from the lever arm. Each of the other ends of the lever arm has fc formed thereon.
a first plurality of teeth, each of the metal plates having a second plurality of teeth formed thereon;
It is capable of selectively engaging any one of the first four levers on the lowering lever arm. Each of the first and second lever arms can be latched with a third number of angular positions.

Preferably, the first and second lever arms are disposed and recessed on one side of the base, and the third and fourth lever arms correspond laterally to the first and second lever arms. disposed adjacent to the other side of the base in relationship. Each of the third and fourth lever arms is pivotally coupled to the base at one end for rotation about the base axis. The preloaded first and second torque members are connected to the first and second torque members.
The upper lever arm of the lever arm is coupled to the third and fourth lever arms, respectively, so as to synchronize their rotations.

Preferably, spring balancing means are coupled to the second torque member to balance the rotation of the second torque member.

The objects, features, and advantages of the present invention will become readily apparent from the following detailed description of the best mode, taken in conjunction with the accompanying drawings, which refer to FIGS.
The A-sided seat assembly shown includes a base or pace portion 10 adapted to be mounted above the floor 11 of a motor vehicle. Seat support 12 encircles a seat 14 having a back support portion 16 . Seat support 1
The height between the front and rear parts of 2 and the base 10 is determined by the ratio adjustment mechanism 1 disposed between the base 10 and the seat support 12.
By 8? A is possible.

- The J4s machine groove 18 is connected to a pair of fan-shaped lever arms 20 and 2.
Includes 2. The lever arm 20 is bent and has a narrow outer end that is coupled to the rebase 10 with a pin or rivet 23KA through a bracket 24, and the mounting bracket 24 has a pin receiving groove 25 formed therein.
and has a base 10 around the base 10 that cuts off the base 10.
The lever arm 200 is designed to allow angular displacement with respect to the lever arm 200. The lever arm 20 is independently pivoted to the seat support 12 at 28 by a pin 29 as shown in FIG. The inwardly facing arcuate end of the lever arm 20 has a series of preferably 15 teeth formed thereon, which allows the lever arm 20 to be moved in any one of a plurality of angular positions with respect to the base 10. The aT function is to hang money on the arm 20.

Similarly, the lever arm 22 is pivotally coupled to the base 10 in an outer groove by a pin or rivet 31 through a bent mounting bracket 32, the mounting bracket 32 having a groove for receiving a beveled bin 31 formed therein. i1 has $33. The lever arm 22 is also independently pivoted to the seat support 12 at a hinge 35' by a pin or rivet 34, as shown in FIG. Lever arm 22
has a plurality of teeth 36 formed on its arcuate O inwardly facing end, which teeth 36 correspond to the teeth 30 of the lever arm 20.
corresponds to

Each of the lever arms 20 and 22 has a respective pivot 28 and 3.
It carries a pin 37 intermediate between 5 and the inwardly facing end of the arc. The associated latches, detailed below, allow the pins 37 to be lowered through the lever arms 20 and 22 to the sides of the seat support 12 in order to stabilize and limit the movement of the lever arms 20 and 22 with respect to the metal plate. It moves in an arcuate groove (not shown) formed in the.

The pivot connections between the lever arms 20 and 22 and the five-seat support 12 are longitudinally interlayered. Thus, the lever arm 20 adjusts the height of the front portion of the seat support 12, and the Δ-arm 22 adjusts the height of the rear portion of the seat support 12.

In order to latch the lever arm 20 in the desired angular configuration, the latch plate 40 is coupled to the seat support 12 by a rivet 42 for angular rotation about an axis at a pace of 10 t-m. There is. The latch has a metal plate 40 formed thereon with a plurality of teeth 44, preferably 5 H [1], which engage any of the similar teeth on the lever arm 20. That is, they are adapted to interlock.

A similar hook is pivotally connected to the seat support 12 at 45 so that a metal plate 46 is capable of angular rotation about a horizontal transverse axis. The latch plate 46 carries five teeth 50 adapted to engage either set of teeth 36 on the lever arm 22 so as to prevent the rotation of the lever arm 22 when so engaged. It has become. Preferably, the teeth 30 and 36 have a chi/4' of approximately 55 degrees, the spacing between the teeth has an angle of about 60 degrees, and the particular lever arm and latch have an angle between the metal plate combinations. When disengagement is desired, teeth 44 and 5
0 can be easily extracted from teeth 30 and 36, respectively.

By providing five hook teeth on the metal plate, the size of the surface area that performs the function of hanging the metal is substantially increased, and the surface area between the hook and the arm as a metal plate is substantially increased. to ensure positive locking.

The hook is gold, the lever arm 20.22 corresponds to the plate 40.46.
The engagement between them is positively fixed by camming plates 49 and 51, respectively. A camming plate 49 is pivotally connected to the seat support 12 at 53 for rotation about a transverse axis. Similarly, the camming plate 51 is pivoted to the seat support 12 at 55 for rotation about a tank slit line spaced one distance from the transverse axis 53.

Each of the latches 40 and 46 includes a pair of interleaved fingers 57 and 59 for receiving the ends of its corresponding camming plate. If the camming plates 49, 51 and their corresponding fingers 57 engage with each other, the locking will result in the disengagement, but the camming plates 49.51 and their corresponding fingers 59 Sliding engagement between the latches results in costly latching.

The engagement between the metal plate 4'0.46 and the lever arm 2o, 22 and the camming plate 49.51 is, respectively, pivoted at 54 to the seat support 12 for rotation about a transverse axis. controlled by a flat control link 52. Control link 52 has a pair of outwardly extending elongated arms 56 and 58 formed thereon for engaging camming plates 49 and 51, respectively. The rivet 60 is connected to the control link 5
2 to form a pivot connection between one end of actuator arm 66 and control link 52, which will be discussed in more detail below.

As best shown in FIG.
and 51 include curved arms 63 and 65, respectively, which extend upwardly and inwardly from the corresponding yk'heads 53 and 55. Tension coil spring 64 has its ends engaged with arms 6-3 and 65, biasing the camming plate into engagement with the corresponding finger 59 of latch metal plate 40.46. It looks like this. Thus, the latch plates 40 and 46 are urged outwardly away from each other into engagement with their associated lever arms. Rotation of the control link 52 in one direction about the pivot 54 causes one of the camming plates to rotate about its transverse axis so that its associated latch cams into engagement with the metal plate fingers 57. , the hook tends to disengage the metal plate from the associated lever arm. At the same time, the other camming plate constricts to t-4 with its latch engaging the fingers of the metal plate, while the latch remains engaged with its associated lever arm. control link 5
The pivot movement of the actuator arm 6 is determined by the operator's control of the actuator arm 66.
6 is attached to the seat support 12 by a rivet 42.
It extends upward from the outside so that the occupant of the seat can get close to it. The inner 111I end of the actuator arm 66 has a pivot point S? provided by the rivet 42? The control link 52 is rotated around the pivot shaft 54 in the viewing direction based on the pivoting of the arm 66 around the i-junction 9 .

During operation of the assembly shown in FIGS. 1-3, regulator 418
id, seat support for Pace 10] It is possible to cool the front and rear elevations of the vehicle independently. The seat support 12 is adjustable between a lowered altitude position as shown in FIG. 1 and a raised altitude position as shown in FIG. To enable this adjustment, actuator arm 66F! s”
! First, it can be rotated counterclockwise around the rivet 42. For example, if control link 52 is rotated clockwise about pivot 54, the deflection f? The knee cam action plate 49 is removed, and the cam action plate 49 is now brought into cam engagement with the finger-like portions 57 of the metal plate 40.

m7 above the teeth 30 on the lever arm 20: Jh Ram m4
4 rotates the metal plate 40 out of engagement with the lever arm 20. The lever arm 20 is therefore free to pivot around the circumference of the mounting bracket 24 by means of a pin and groove combination, and thus with the aid of the forward riding rod 70, which will be discussed in more detail below.

It becomes possible to lift the front part of the seat support 12. The seat occupant can also assist in this maneuver by simply leaning his back against the backrest portion 16.

After the seat support 12 is energized to the desired height with respect to pace 1 OVC, the actuator arm 66 is released and the spring 64 biases the camming plate 49 into camming engagement against the fingers 5,9. The latch plate 40 is then cammed outwardly into engagement with the properly selected set of teeth on the lever arm 20, and the Wt 18 is again moved, for example as shown in FIG. Money can be put on the hook.

The counterclockwise rotation of the actuator arm 6G around the periphery 9 of the rivet 42 is due to the free movement coupling between the control link 52 and the cam action plate 51 between the latch plate 46 and the lever arm 2.
The shape and groove do not affect the fit between the two. Clockwise rotation of actuator arm 660 performs a corresponding function so that the rear portion of seat support 12 can be raised or lowered as desired with the aid of rear torsion rod 72, which will be described in more detail.

The seat occupant can also assist in this maneuver by leaning forward on the seat.

As shown in FIG. 3, the second surface r4 structure 18' is 0@
It is disposed on a laterally opposite side of the seat support 12 from the knot mechanism 18 . The adjustment groove 18' is connected to the mounting bracket 2.
a second pair of lever arms 20' and 22' having outer ends pivotally connected to pace portion 10' by 4' and 32';
includes. The intermediate portions of the lever arms 20' and 22' are pivoted to opposite sides of the seat support 12 by pins 29' and 34'. In order to synchronize the operation of the adjustment mechanisms 18 and 18', the lever arm 20 and 20'
L/HA arms 20 and 20' are connected to each other by a chrono door (JVc). A suitable IC is mounted on the seat support 12 and pivoted on the pins 28 and 28' in the manner described above.
allows for the aforementioned pivot joints 28 on both sides.

Similarly, lever arm 22.22' and pin 34°34
'ff are also interconnected by similar torque members or reinforcement rods 72.

Thus, when the control arm 66 is rotated to pivot the control link 52, the camming plates 49 and 51 cause their corresponding latches to disengage the metal plates, thus causing both sides of the apparatus shown in FIG. The lever end rotates. lever arm 2
The upward rotation of 2 and 22' is assisted by the preloaded drilled rod 72.

A pair of spaced apart spring retaining arms or spring hands are -74
and 76 are mounted on the corner rod 72. Opposite ends of torsion springs 78 and 80 are mounted on mounting brackets 75 and 77 and hangers -74 and 76 located on opposite sides of seat support 12 near the front of the seat. Gears 78 and 80 balance the rotation of the shaft 7.2 so that the seat assemblies, and particularly the rear of the seat assembly, can be vertically adjusted in a smooth and efficient manner.

Although not shown, pace parts 0 and 10' can be provided with track means for imparting a longitudinal hA section of the seat support 12 with respect to the floor 11 of the motor vehicle on which it is mounted. To facilitate longitudinal clearance between the upper and lower track members, a suitable low friction support material may be disposed therebetween.

In summary, the height relative to the front and rear seat supports can be adjusted relative to the seat pace by selective operation of a single actuator arm that serves to latch and unhook the mechanism supporting the seat relative to the pace. The invention has been described in terms of an independently adjustable motor vehicle seat assembly. In addition, the seat assembly is longitudinally adjustable by a track mounted on the seat of the motor vehicle. Having shown and described in detail the preferred embodiment B of the adjustable seat assembly, the technical field Those skilled in the art will recognize a variety of possible designs and implementations for implementing the invention as defined by the claims.

[Brief explanation of the drawing]

Figure 1 is a side view of an exemplary embodiment of the assembly of the present invention in the lowered position. Figure 2 is a side view of the assembly of Figure 1 in the raised position. FIG. 3 is a plan view of one exemplary implementation. 10...pace, 12...seat support', 20,2
2..., lever arm, 28.35... pivot, 23
．． 31... Pin, 40.46... Hanging is a metal plate, 49.
51...Cam action plate, 52...Control link, 66
...Actuator arm, 18...Adjuster: Jo,
30.36...teeth, 44.45...teeth, 64...
Spring, 57.59... Finger, 70.72... Torque member/my rod OFig, / , / Fig, 2 Fig, 3

Claims (1)

[Scope of Claims] (1) Pace; Seat Support: The first and second fan-shaped lever arms are arranged such that each lever arm rotates about an axis transverse to the pace. the other ends of the first and second sector-shaped lever arms extending inwardly of each other; a traverse for pivotally coupling each of the first and second lever arms to the seat support at a point midway between its ends for independently adjusting the height by rotation of the lever arms; rod means; pivotally coupled to the seat support for rotation about their respective transverse axes and selectively engageable with the other ends of the first and second lever arms, respectively, and configured to be engaged in case of engagement; The first and second hooks, which are adapted to prevent the lever arm from turning, are attached to the seat support at a point midway between its ends. The first and second latches can be selectively engaged with the metal plate so as to lock the metal plate to the Jl and second lever arms, respectively. , the first and second cam action F! i: a single control link type-coupled to the seat support and slidably coupled to the first and second camming plates; an actuator mechanism coupled to the control link for pivoting the link, each of the other ends of the lever arm having a first plurality of teeth formed thereon; and each of the metal plates of the hook has a second plurality of teeth formed thereon, and the second 7J! The number teeth are
any of the first plurality of teeth on the associated lever arm;
The first and second lever arms are each selectively engageable, and each of the first and second lever arms is latched by a third plurality of angular devices. Being able to be multiplied: including la, As
Possible seat assembly. (2J) A patent claim characterized in that, in order to lock the metal plate to the lever arm and the lever arm, the hook includes a spring means for causing the cam action plate to be deflected by one position and the hook to engage with the metal plate. (3) The control link pivots about the full axis, and the transverse axis of the camming plate is 111 above the transverse line of the V-link. (4) each of said camming plates includes an arm extending therefrom; the arms are spaced apart, and the spring bias means is configured to cam the teeth of the latch into locking engagement with the teeth of the first and second levers; Claim 2, characterized in that the K-cam working plates are coupled to each other so as to bias the cam working plate.
Assemblies described in Section. (5) said first and second hooks each include a pair of interleaved fingers for receiving one end of said respective camming plate; Claim 1 characterized in that during rotation, the hook cam engages with the metal plate.
Assemblies described in Section. (6) a lever arm is disposed adjacent to and adjacent to one side of the pace, and an assembly is disposed adjacent to the other side of the pace in a laterally corresponding relationship to the first and second lever arms; further including third and fourth lever arms, each of the third and fourth lever arms being pivoted to the pace at one end for rotation about the transverse axis I. and that the assembly includes third and fourth lever arms that independently adjust the height between vertically spaced points along the seating body and the pace by rotation of the lever arms. each seat support at said spaced points. means for pivotally coupling the first and second lever arms to the fifth lever arm and first and second torque members for rotationally synchronizingly coupling the first and second lever arms to the fourth lever arm; The claim 's1 is characterized in that it includes
The assembly according to paragraphs 1, 2, 3, 4 or 5. 7. The assembly of claim 6, further comprising a spring balance means coupled to said second torque member for balancing the rotation of said second torque member. 18) Pace; seat support; first and second sector-shaped lever arms, each lever arm being pivotally coupled to the Pace at one end for rotation in a line transverse to the Pace; the other ends extending inwardly of each other; a mechanism for independently adjusting (by rotation of the lever arm) the height between the pace and a point longitudinally connected θ to the seat support; transverse rod means for pivotally coupling each of the first and second four-arms to the seat support at a point intermediate the ends thereof; for rotation about respective transverse axes; a first member pivotally coupled to the seat support and selectively securable to the other end of the first and second arm, respectively, and adapted to be engaged and prevent rotation thereof; and the second hook is a metal plate: pivotally connected to the seat support at a point midway between its ends for rotation about the respective 1th line, the first and second hooks connecting the metal plate to the first and a second latch--first and second cam actuating plates, the first and second hooks being selectively engageable with metal plates, respectively, so as to cumulatively lock onto the arms; said cam; Each of the working plates includes an arm extending therefrom, said arm being a single unit pivotally connected to the seat support and slidably connected to the first and second five-way plates. Control link: The hook is an actuator mechanism coupled to the control link to pivot the control link to selectively disengage both metal plates from the lever arm. a first plurality of teeth formed thereon, each of the hooks having a second number of teeth formed thereon; selectively engaging any of the first plurality of teeth on the associated lever arm, whereby each of the first and second lever arms;
in a fifth plurality of angular configurations, the latch can be gilded; and the latch is cammed to cam the teeth of the metal plate into locking engagement with the first and second lever teeth. An adjustable seat assembly comprising: spring means for biasing the arm of the camming plate to bias the arm of the camming plate; (9) Base; Seat Support: first and second sector-shaped lever arms, each lever arm being pivotally coupled to the base at one end for rotation about an axis transverse to the base; The other layers extend inwardly from each other, with the lever arm one on one side of the pace.
Adjacently Disposed: third and fourth lever arms disposed adjacently on the other side of the pace in a laterally corresponding relationship to the first and second lever arms; $3 and the fourth lever arm each have rA? ! fr - pivoted and clamped to the base at one end for rotation about a thin wire, with the curved ends of the lever arm extending inwardly from each other: the previously longitudinally spaced points on the seat support; Each of the third and fourth lever arms is pivoted to the seat support at said spaced point so that the height between the seats is adjusted independently of the rotation of the lever arms. 5 means for coupling the first and second lever arms to the third and fourth lever arms, respectively, for synchronizing their rotation; torque members spaced laterally along the seat support; The height between the seat point and the pace is adjusted independently by rotation of the first and second lever arms. The transverse rod members pivot at said one point to the body; rotate about their respective transverse axes! a first lever arm pivotally coupled to the seat support and selectively engageable with the other ends of the first and second lever arms, respectively, so as to prevent the rotation of the lever arm when engaged; and the second hook is a metal plate: The first and second lever arms are used to deflect the force acting plate with one force so as to lock the metal plate in a product term, and the hook engages the metal plate with a spring. means; pivotably coupled to the seat support at a point midway between its ends for rotation about their respective transverse axes, the first and second hooks pivoting the metal plate onto the first and second lever arms; first and second camming plates, the first and second latches being selectively engageable with the respective latches to positively lock each other; and a control link slidably coupled to a second cam-actuating plate; and a control link pivoting to selectively disengage both metal plates from the first and second lever arms. an actuator mechanism coupled to the control link so as to cause: each of the other ends of the first and second lever arms has a plurality of teeth formed thereon; , a second plurality of teeth formed thereon, the second plurality of teeth being selectively engageable with any of the first plurality of teeth on the associated lever arm; Thereby, the first and second
An adjustable seat assembly comprising: each lever arm of the lever arm being latched in a third plurality of angular configurations. The set as set forth in claim 9 of the Patent Claims 1, further comprising a spring balancing means coupled to the second torque member for balancing the rotation of the second torque member. Three-dimensional.