JPH0439714Y2 - - Google Patents

Description

[Detailed description of the invention] <<Industrial application field>> The present invention relates to a seat reclining device.
In particular, the present invention relates to a seat reclining device that covers a gap between a foot and a notch provided in a base covering cover that allows an arm to rotate.

<<Prior Art>> This type of seat reclining device includes an arm that is pivotally supported on a base by a shaft and is provided with an adjustable angle, and the tip of the arm is connected to a notch in a cover body that covers the base. It protrudes outward from the seat and connects to the seat back side.

The notch of the cover body is set to a size that allows the arm to pivot, and the gap between the notch and the arm is considerably open. For this reason, dust etc. may enter through the gap, resulting in malfunction of the angle adjustment mechanism, problems caused by dropping small items, and poor appearance.Furthermore, the backward tilt of the arm may cause the hot tooth provided at the bottom of the arm to deteriorate. Although it is located on the side of the notch, at this time, the grease applied to the hot tooth may adhere to clothes or sheets, causing problems.

Therefore, as seen in Japanese Utility Model Application Publication No. 59-34654, Japanese Utility Model Application Publication No. 59-29953, and Japanese Utility Model Application Publication No. 59-44361, a structure that covers the gap has been proposed. has been done.

<<Problems to be solved by the invention>> However, these methods fix an elastic tongue-shaped shielding member to the inner wall of the notch in the cover body (Utility Model Application No. 59-29953, Utility Model Application No. 59-44361). issue)
Alternatively, since a guide is provided on the inner wall of the notch and the cover is connected to the arm, it is necessary to change the design of the cover body and perform post-processing, which complicates the mounting structure and increases costs. It was hot.

The present invention was devised in view of these circumstances, and the purpose of the present invention is to provide a seat reclining device in which a shielding member that covers the gap between the notch and the arm can be easily attached without changing the cover body. shall be.

<Means for Solving the Problems> In order to achieve the above object, the present invention includes an arm that is pivotally supported by a shaft fixed to a base and is provided with an adjustable angle, and the arm is tilted forward. The arm has a return spring that biases it, an upper tooth that engages with a lower tooth that is interlocked with an operating lever to resist the biasing force of the return spring and lock the arm from tilting forward, and a notch that allows the arm to pivot. and a cover body that covers the base with an arm protruding from the notch, the seat reclining device adjusting the tilt of the seat back by connecting the tip of the arm to the seat back side, providing a shielding member that is pivotally supported and rotates due to its own weight to almost follow the forward tilting of the arm, covering a gap opened between the notch and the arm;
At the intersection of the main body and the proximal end of the shielding member, the shielding member contacts one end of the top tooth so that the shielding member covers a gap that is opened between the notch and the arm when the arm tilts backward. The present invention is characterized in that a locking portion is formed in contact with the shielding member to rotate the shielding member substantially following the rotation of the arm.

<<Operation>> Attachment of the shielding member is completed by simply pivoting the arm to the shaft of the base and then pivoting the shielding member coaxially and rotatably in the same manner during or after assembly of the seat reclining device.

<<Embodiment>> FIG. 1 is a perspective view of a seat reclining device shown as an embodiment of the present invention, and FIG. 2 is an exploded perspective view schematically showing an angle adjustment mechanism in the device.

In these figures, the seat reclining device includes an arm 3 and a shielding member 4 that are pivotally supported on a shaft 2 provided on a base 1, a return spring 5 that constantly biases the arm 3 in a forward tilting direction, an upper tooth 6, and a shielding member 4. A lower tooth 7 that engages with the teeth 61 of the atsupatotooth 6, an operating lever 8 that releases the engagement of the lower tooth 7 against an urging force and enables the arm 3 to pivot, and covers the base 1 with the arm 3 protruding. The seatback is provided with a cover body 9, and the tip of the arm 3 is connected to the seatback side to adjust the tilting of the seatback.

Further, the cover body 9 includes an inner cover 91 and an outer cover 92 made of synthetic resin. A recess 92a is formed in the upright base of the outer cover 92, and the tip of the operating lever 8 protrudes from a through-hole 92b provided on the inner wall of the recess 92a. Further, a notch 92c is provided on the inner periphery of the rising upper part of the outer cover 92, and the arm 3 passes through and projects from the notch 92c.
It allows for turning. The main body 41 of the shielding member 4 is located inside the cover body 9 in the notch 92a, and is opened between the notch 92c and the arm 3 following the rotation of the arm 3. The gap is now covered. The shielding member 4 is
As shown in FIG. 3, it is made of a resin molded body and is formed into a generally inverted L shape as a whole. A hole 44 passing through a boss 43 is provided at the base end 42 of the hanging portion,
By inserting the shaft 2 of the base 2 into this hole 44, the shielding member 4 is rotatably supported.
A return spring 5 attached to the coaxial shaft 2 prevents the shielding member 4 from coming off. Further, this base end portion 42 extends to the vicinity of the notch portion 92c and is connected to the main body portion 41 of the horizontal portion. The size of the main body part 41 is set so that at least the top tooth 6 fixed to the base of the arm 3 is not visible from the notch part 92c. A locking part 45 bent at a substantially perpendicular angle from the end of the main body part 41 is provided at the intersection of the main body part 41 with the base end part 42. One end 62 of 6 comes into contact with the locking part 45.

FIG. 4 shows a modification of the shielding member 4. As shown in FIG. That is, the shielding member 40 has a structure in which a part of the hole 44 provided in the shielding member 4 shown in FIG. 3 is cut out, and can be inserted into the shaft 2 of the base 2 using the notch 46 has been done. By providing the notch 46 in this way, even after the seat reclining device is assembled, the shielding member 40 can be easily attached by inserting it into the shaft 2 through the notch 46.

FIGS. 5A and 5B schematically show the function of the shielding member 4, and will be described below with reference to the same figures.

By pulling up the operating lever 8 against the biasing force of a spring (not shown), the lower tooth 7 is swung downward and is disengaged from the upper tooth 6, and the seat back connected to the arm 3 is moved to the position shown in FIG. It is tilted forward by the biasing force of the return spring 5. In this case, the shielding member 4 is rotated by its own weight in the direction of arrow a about the shaft 2 as a fulcrum, and the locking portion 45 is locked against one end 62 of the top tooth 6. In addition, with the upper teeth 6 and lower teeth 7 disengaged, the seat back connected to the arm 3 is pushed backward as shown in FIG. When the operation lever 8 becomes
When the lower tooth 7 is returned to its original position, it is locked by meshing with the upper tooth 6. In this case, since the locking portion 45 is pushed by the one end 62 of the top tooth 6, the shielding member 4 follows the rotation of the arm 3 and is rotated in the direction of arrow b. As the shielding member 4 is rotated following the rotation of the arm 3 in this way, the notch 92 of the outer cover 92
The gap opened between c and the arm 3 is covered by the main body part 41 of the shielding member 4, and when the notch part 92c is viewed from the front, the angle adjustment mechanism part such as the top tooth 6 in the cover body 9 is reliably shielded. That will happen.

Incidentally, as a method for rotating the shielding member 4, for example, a pin or the like is provided upright on the base side of the arm 3 without using one end 61 of the atsupatotooth 6, and the shielding member 4 is pushed by the pin. The rotation of the arm 3 may be followed by the rotation of the arm 3. In addition, the shielding member 4 is provided with an arrow a shown in FIG.
By providing a spring member that biases the shielding member 4 in this direction, the rotation of the shielding member 4 when the arm 3 is tilted forward becomes smoother. As described above, the present invention is not limited to this embodiment, but can be modified in various ways.

<<Effect of the invention>> As is clear from the above embodiments, the seat reclining device of the present invention can cover the gap opened between the notch and the arm without making any design changes to the conventional cover body. The shielding member can be easily assembled. As a result, dust or the like may adhere to the angle adjustment mechanism such as the top tooth located on the side of the notch, or conversely, grease applied to the mechanism may be deposited on the surface of the cover body or on the reclining device of the seat. It is possible to easily prevent the risk of adhesion to the mounting portion or the occupant's clothes, and the appearance can also be improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a seat reclining device according to the present invention, FIG. 2 is an exploded perspective view showing the angle adjustment mechanism of the device, and FIG. 3 is a partially cutaway perspective view showing a shielding member of the device. Fig. 4 is a perspective view showing a modified example of the shielding member, Fig. 5 shows the action of the shielding member, Fig. 4A is a schematic diagram showing the arm pivoted forward, and Fig. 5B is a schematic diagram showing the arm pivoted forward. FIG. 3 is a schematic diagram showing a state where the vehicle is turned backward. 1...Base, 2...Axis, 3...Arm, 4,
40... Shielding member, 41... Main body part, 42... Base end part, 45... Locking part, 5... Return spring, 6... Atsupatotooth, 62... One end part, 7...
...lower arm, 9...cover body, 91...inner cover, 92...outer cover, 92c...notch portion.

Claims (1)

[Scope of utility model registration request] An arm that is pivotably supported by a shaft fixed to a base and is provided so as to be adjustable in angle; a return spring that biases the arm in a forward tilting direction; comprising an upper tooth that locks the arm from tilting forward against an urging force, and a cover body that has a notch that allows the arm to pivot and covers the base with the arm protruding from the notch; The seat reclining device adjusts the tilting of the seat back by connecting the tip of the arm to the seat back side, the seat reclining device being pivotally supported on the shaft and rotating almost following the forward tilting of the arm due to its own weight. At the same time, a shielding member is provided to cover the gap opened between the notch and the arm, and a shielding member is provided at the intersection of the main body and the base end of the shielding member to prevent the gap between the notch and the arm when the arm is tilted backward. The invention is characterized in that a locking part is formed that contacts one end of the atsupatoto so that the shielding member covers a gap opened between them, and rotates the shielding member substantially following the rotation of the arm. Seat reclining device.