JPH0440519Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a foot-operated reclining device, and is particularly used for the front seat of a vehicle seat such as an automobile, and the front seat is connected to the rear seat. This invention relates to a seat back that is configured to be able to fall forward so that a person seated in the vehicle can get on and off the vehicle without any trouble.

[Prior Art] Generally, when a seat equipped with a reclining device is adopted in a so-called two-door car or a three-door car,
For example, in order to prevent the front seat from getting in the way when a passenger in the rear seat gets in or out of the vehicle, a configuration is adopted in which the seat back can be tilted forward by an operation from the rear seat side. This type of reclining device usually uses a so-called latch type device that can change the inclination angle of the seat back in multiple stages, and as shown in FIG.
An arm 4 fixed to the seat bag 5 is urged by a return spring 7 and rotatably supported on the rotation shaft 3, and the arm 4 has an arm 4 positioned on the circumference around the rotation shaft 3. An upper tooth 8 having teeth formed thereon is attached to the base plate 2, and a lower tooth 9 partially formed with a tooth portion that meshes with the teeth of the upper tooth 8 is rotatably supported by a shaft 10. An operating lever 13 that engages with and rotates the lower teeth 9 is biased and pivoted by a coil spring 14. Therefore, in order to enable the forward tilting operation of the seat back 5 from the rear seat, a holder plate 6 and a lower tooth 9 are arranged opposite to the base plate 2 to support shaft parts such as the rotating shaft 3.
In between, the pedal 15 is supported by the shaft 10, and
A link 18 connects the pedal 15 and the operating lever 13.
Connected with. Therefore, when the pedal 15 is depressed with the foot, the operating lever 13 rotates in conjunction with the operating lever 13, and the rotation of the operating lever 13 causes the lower teeth 9 to rotate, and the engagement between the lower teeth 9 and the upper teeth 8 is released.
The upper tooth 8 rotates, and as a result, the arm 4 that fixes the seat back 5 rotates forward by the force of the return spring 7 and falls down. Can be operated independently by a seated person.

[Problems to be solved by the invention] However, according to the conventional foot-operated reclining device, the lower teeth 9 and the pedal 1 are disposed between the base plate 2 and the holder plate 6.
5 sandwiched between the coaxial shafts 10, the structure is disadvantageous for the engagement strength between the lower teeth 9 and the upper teeth 8, which is the basic function of reclining. Since the assembly structure is different from standard reclining devices, it is inevitable that the line process for assembling the foot-operated reclining device will be branched or differentiated from the middle of the line process for assembling standard reclining devices. This has resulted in an increase in the cost of the device itself, making the foot-operated reclining device relatively expensive.

In view of the above circumstances, this invention aims to improve the assembly structure of the foot-operated reclining device in order to reduce its cost.

[Means for solving the problem] An arm for fixing the seat bag is supported rotatably under pressure on a base plate for fixing the seat cushion, and an upper tooth is fixed to the arm and meshes with the upper tooth. A lower tooth partially formed with a tooth portion is rotatably supported on the base plate, and an operating lever equipped with a cam that engages with the lower tooth is rotatably supported, and the arm, upper tooth, and In a reclining device that is provided with a holder plate that holds a lower tooth opposite to a base plate, the shaft of the lower tooth projects outward from the holder plate, and one of the rear seat levers consisting of a pedal and a link is attached to the shaft. A reclining device was constructed in which the other end was pivoted to the operating lever and set on the same plane as the holder plate.

[Function] According to the above structure of this invention, when the person in the rear seat depresses the pedal when activating the forward folding function of the front seat, the pedal rotates via the link and rotates the operating lever. Separate the lower tooth from the upper tooth and use the spring that biases the arm to rotate it forward and knock it down.

[Example] An example of this invention will be described below with reference to the drawings.

Figure 1 shows the first embodiment of this invention.
In the drawing, an arm 4 is rotatably supported on a base plate 2 fixed to a seat cushion 1 so as to be rotatable about a rotation shaft 3. As shown in FIG. A seat bag 5 is fixed to the arm 4 and the base plate 2
and a holder plate 6, and a return spring 7 is elastically loaded on the rotation shaft 3 on the holder plate 6 to bias the arm 4 to rotate in the counterclockwise direction shown in the figure. An upper tooth 8 is integrally fixed to the arm 4, and the upper tooth 8 is formed with a tooth portion 8a located on a circumference of a constant radius around the rotation axis 3.
A lower tooth 9 partially formed with a tooth portion 9a that can mesh with the tooth portion 8a is supported by a shaft 10 on the base plate 2. The lower tooth 9 includes a cam convex portion 9b and a cam concave portion 9c. This cam convex portion 9b
A cam 11 that engages and disengages from the cam recess 9c is supported by the base plate 2 via a shaft 12. The cam 11 is fixed integrally with the operating lever 13 and rotates around the shaft 12 together with the operating lever 13.
The operating lever 13 is biased to rotate counterclockwise in the drawing via a coil spring 14. A holder plate 6 rotatably supports the rotating shaft 3 and shafts 10, 12, and a foot pedal 15 is rotatably supported at the end of the shaft 10 projecting onto the holder plate 6. A link 18 has one end connected to the pedal 15 with a pin 17, and the other end is rotatably connected to the operating lever 13 with a pin 19.
A push nut 20 is attached to the pin 19 as a retaining member. This pedal 15 and link 18 constitute a rear seat lever. Furthermore, when the arm 4 falls forward, it hits the hook pin 4a of the return spring 7 and falls down as a unit.
(Walk-in) One end is connected to the lever 29,
A wire whose other end is connected to a lock part of a seat slide mechanism (not shown) passes through a tube 23 fixed to the holder plate 6 and base plate 2 via mounting brackets 22, 22, and this wire is connected to the arm 4. When the seat slides forward, the wire 21 is pulled and a so-called walk-in function is activated to unlock the seat slide mechanism.

Therefore, to explain the operation of the above embodiment,
When the seatback 5 is folded forward, when a person seated in the rear seat depresses the pedal 15 with their foot, the pedal 15 rotates clockwise about the shaft 10, and the link 18 pushes the operating lever 13, causing the operating lever 13 to rotate.
is rotated clockwise around the shaft 12. The cam 11, which rotates together with the operating lever 13, moves into the cam recess 9c of the lower tooth 9 and rotates the lower tooth 9 counterclockwise about the shaft 10. Therefore, the lower tooth 9 separates from the upper tooth 8, and the teeth 8a, 9a are disengaged from each other, so that the arm 4 can freely rotate around the rotation axis 3, and is moved forward by the action of the return spring 7. It turns and falls. When the arm 4 falls forward, the wire 21 is pulled, the seat slide mechanism is unlocked, and the entire front seat moves forward along the slide rail.

Figure 2 shows a second embodiment of this invention.
In this example, a reclining device having the same configuration as the previous example is used, and the pedal 24 is the operating lever 1.
A link 27 is long enough to be directly connected to the pedal 24 with a pin 25, and one end of the link 27 is connected to the pedal 24 with a pin 26. The rear seat lever is rotatably attached to the end of the lever, and is connected with a push nut 16 to prevent it from coming off. Since the other configurations are the same as those of the previous embodiment, the same parts will be denoted by the same reference numerals and redundant explanation will be omitted.

To explain the operation of the second embodiment, when the pedal 24 is depressed, the operating lever 13 rotates clockwise about the shaft 12 and rotates via the cam 11, as in the first embodiment. The lower tooth 9 rotates counterclockwise around the shaft 10, the engagement between the upper tooth 8 and the lower tooth 9 is released, and the arm 4 rotates forward under the force of the return spring 7, causing the seat back 5 to fall down. There is no difference. The difference between the second embodiment and the first embodiment is that in the foot pedal operation, the contact point between the foot and the pedal 24 initially has a radius equal to the distance R ₂ connecting the shaft 28 and the contact point P (see FIG. 2). After that, the shaft 26 is pushed by the pedal 24 and moves diagonally forward and downward in a substantially straight line. Therefore, in the first embodiment, the pedal 15 only has a radius around the shaft 10.
This is different from taking only the circular motion of R ₁ .
Therefore, in the second embodiment, even if the pedal 24 initially rotates slightly about the shaft 28 when an unexpected force is applied to the pedal 24, the pedal 24 moves straight downward diagonally. The operating lever 13 does not move unless further force is applied to move the seat bag 5 to the seat back 5, thereby preventing the seat bag 5 from inadvertently falling forward. In other words, the rotation operation of the operating lever 13 via the pedal 24 requires two consecutive actions, so that it has a so-called fail-safe effect.

[Effects of the invention] According to the invention described above, the arm for fixing the seat back is biased and rotatably supported on the base plate for fixing the seat cushion, and the upper tooth is fixed to the arm. A lower tooth having a tooth portion that engages with the upper tooth is rotatably supported on the base plate, and an operating lever including a cam that engages with the lower tooth is rotatably supported, and further, In the reclining device provided with a holder plate that holds the arm, upper tooth, and lower tooth in opposition to the base plate, the shaft of the lower tooth projects outward from the holder plate, and a rear seat lever consisting of a pedal and a link is attached to the shaft. Since we constructed a reclining device in which one of the pedals is pivotally supported, and the other is pivotally attached to the operating lever and set on the same plane as the holder plate, the pedals are placed outside the holder plate, so the lower tooth and upper tooth are separated. The engagement strength is not affected by the pedal, which is advantageous from a structural standpoint. The foot-operated reclining device and the standard reclining device have a common assembly structure, and after assembling the standard reclining device, the foot-operated reclining device can be completed by attaching the pedals and links. Therefore, there is no need to change or branch out the manufacturing or assembly process of the reclining device,
A low-cost foot-operated reclining device can be provided. Furthermore, by changing the location of the pedal and the link, foot pedal operability is improved, and safety is achieved by adopting a fail-safe structure that prevents the pedal from rotating in response to unexpected force. In addition to being taller, the pedal or link that is pivoted to the operating lever is set on the same plane as the holder plate, so the thickness is increased by the amount of the pedal or link that is pivoted to the shaft of the lower tooth compared to a standard reclining device. There are no effects.

[Brief explanation of drawings]

FIG. 1 is a front view of main parts showing a first embodiment of this invention, FIG. 2 is a front view of main parts showing a second embodiment of this invention, and FIG. 3 is a front view of main parts of a conventional example. 1... Seat cushion, 2... Base plate, 3... Rotating shaft, 4... Arm, 5... Seat back, 6... Holder plate, 7... Return spring, 8... Upper tooth, 9... Lower teeth , 10... shaft, 11... cam, 12...
Shaft, 13...Operation lever, 14...Coil spring, 15, 24...Pedal, 16, 20...Push nut, 17, 19, 25, 26...Pin, 18, 27...Link.

Claims (1)

[Scope of utility model registration request] An arm for fixing the seat back is biased and rotatably supported on a base plate for fixing the seat cushion, and an upper tooth is fixed to the arm, and a lower tooth is formed with a part of the tooth to mesh with the upper tooth. is rotatably supported on the base plate, and an operating lever equipped with a cam that engages with the lower tooth is rotatably supported, and further includes a holder plate that holds the arm, the upper tooth, and the lower tooth opposite to the base plate. In the reclining device, the shaft of the lower teeth projects outward from the holder plate, one of the rear seat levers consisting of a pedal and a link is pivotally supported on the shaft, and the other is pivotally supported on the operating lever. A foot-operated reclining device, characterized in that the device is placed on the same plane as the holder plate.