JPH04133753U - Natsukuru - Google Patents

Abstract

(57) [Summary] [Purpose] Regarding the so-called Taumel type knuckle used in vehicle reclining devices, "prying" of the operating shaft
To prevent this and increase knuckle power. [Structure] In a reclining device that is equipped with a Taumel knuckle and tilts the seat back relative to the seat cushion by setting the meshing position between the external gear and the internal gear by rotating the operating shaft, the external gear A step is formed around the support hole of the operating shaft of the internal gear, so that the load point of the operating shaft and the meshing points of the external gear and the internal gear are substantially aligned.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is particularly applicable to the knuckles that constitute the reclining device of a vehicle. Regarding the improvement of Yuru Taumel type knuckles.

0002

[Conventional technology]

Normally, a vehicle is equipped with a reclining device on the seat and the seat back is It is common for seats to be tilted relative to the seat cushion to ensure comfort when sitting. Ru.

0003 For example, in this type of reclining device, an eccentric part is formed on the operating shaft, and the Either an external gear or an internal gear is mounted on the eccentric part of the operating shaft, and the other is mounted on the non-eccentric part of the operating shaft. Support to form a Taumel knuckle and seal the lower bracket with external gears. At the bottom, upper brackets each having an internal gear are fixed to the seat back. The seatback is adjusted by setting the meshing position of the external gear and internal gear by rotating the operating shaft. It is known that the seat is tilted relative to the seat cushion (for example, , see Utility Model Application Publication No. 61-131953).

0004

[Problem that the idea aims to solve]

However, with conventional Taumel type bearings, the lower bracket and upper bracket The external gear and internal gear are stamped into the socket, as shown in Figure 4. As shown in FIG. An offset t occurs between the two, and a bending moment acts on the operating shaft 513, causing ” occurs, and the frictional resistance between the operating shaft 513 and the external gear 56 and internal gear 59 increases. The problem was that it was difficult to secure knuckle power.

[0005] In view of these problems, this invention reduces the "prying" of the operating shaft and provides a knuckle pad. The challenge is to provide a knuckle that can increase the power.

[0006]

[Means to solve the problem]

Therefore, the knuckle according to the present invention rotates either the external gear or the internal gear with the eccentricity of the operating shaft. one part and the other part are externally supported on the non-eccentric part of the operating shaft, respectively. By rotation, the meshing position of the external gear and internal gear is set and the seat back is moved. Knuck of a reclining device that is tilted against the seat cushion forming a step around the support hole of the operating shaft of the external gear and the internal gear; The load point of the operating shaft and the meshing points of the external gear and internal gear are made to approximately match. The gist is:

[0007]

[Effect]

In this invention, a step is formed on the external gear and the internal gear, and the load point of the operating shaft is Since the meshing points of the external gear and internal gear are approximately aligned, it is possible to The bending moment that is applied is small, and there is almost no "prying" on the operating shaft. . As a result, the frictional resistance between the operating shaft and the external and internal gears is reduced. , knuckle power is increased.

[0008]

【Example】

Hereinafter, the present invention will be explained in detail based on specific examples shown in the drawings. Figures 1 to 3 shows a knuckle according to an embodiment of the present invention. In the figure, the vehicle seat 1 is The upper end portion of the seat back 3 is composed of a seat cushion 2 and a seat back 3. is provided with a headrest 4, and the seat cushion 2 and seat back 3 are provided with a headrest 4. A reclining device 5 is provided between the seat back 3 and the seat cushion. It can be tilted relative to 2. In addition, the bottom surface of the seat cushion 2 and the passenger compartment A slider mechanism 6 is provided between the floor and the seat 1. The position is adjustable.

[0009] Here, the structure of the reclining device 5 will be explained. In the lower bracket 50, insert the mounting bolt etc. into the hole 51 on the lower side of the lower bracket 50. The upper bracket 52 is fixed to the seat back 3 through the hole 53 on the upper side. It is fixed by inserting a mounting bolt etc.

0010 An external gear 55 is connected to the lower bracket 50 by a connecting pin 54. An internal gear is connected to the upper bracket 52 by a connecting pin 57. A 58 is connected to the upper bracket 52, and the upper edge of the external gear 55 is connected to the upper bracket 52. A flange portion 517 is formed to support the side of the external gear 55 and and internal gear 58 are located between lower bracket 50 and upper bracket 52. Supported.

[0011] Further, an external gear 56 is formed on the external gear 55 by stamping. At the same time, a recess corresponding to the external gear 56 is formed on the opposite side, and a recess corresponding to the external gear 56 is formed on the opposite side. An internal gear 59 is formed on the internal gear 58 by stamping, and at the same time, A recess corresponding to the internal gear 59 is formed on the opposite side. This internal gear 59 The pitch is set to be equal to that of the external gear 56, and the pitch diameter of the internal gear 59 is set to be the same as that of the external gear 56. is set to have a larger diameter than that of the external gear 56.

0012 Further, the external gear 55 and the internal gear 58 have their own gears. Shaft support holes 510 and 511 are formed in the center of the external gear 55. An operating shaft 513 is rotatably inserted and supported in the shaft support hole 510 . This operating axis 513 is formed with an eccentric portion 514, and the eccentric portion 514 of the operating shaft 513 is It is inserted into and supported by the shaft support hole 511 of the internal gear 58 . In addition, knuckle power In order to further increase the 5 and the shaft support hole 511 of the internal gear 58. It is also possible to interpose a ring.

[0013] Further, a pulley 515 is attached to the operating shaft 513 with a nut 516, Although not shown, the pulley 515 is connected to the shaft of the drive motor by a chain or the like. In this way, the meshing position between the external gear 56 and the internal gear 59 is set, and the seal is set. The seat back 3 is tilted relative to the seat cushion 2.

[0014] Further, the external gear 56 and the internal gear 59 have shaft support holes 510 and 511. Steps 518 and 519 are formed in the surrounding area, thereby connecting the load point A of the operation shaft 513 and the outside. The meshing point B of the toothed gear 56 and the internal gear 59 substantially coincide with each other.

[0015] Next, the effects will be explained.

[0016] When adjusting the inclination angle of the seat back 3, the drive motor is driven and the operating shaft 51 Rotate 3. Then, the non-eccentric part of the operating shaft 513 is the fixed point, which is the seat cushion. Is it supported by the shaft support hole 511 of the external gear 55 on the section 2 side? Therefore, the position of the center line of the non-eccentric part of the operating shaft 513 remains unchanged, and the position of the center line of the non-eccentric part of the operating shaft 513 does not change. 514 rotates around its own center line and rotates around the center line of the non-eccentric part. As the upper bracket 52 tilts, the internal gear 59 and the external tooth rotate. The engagement position with the wheel 56 changes, and thus the seat cushion 2 The inclination angle of the rack 13 is adjusted.

[0017] In the knuckle of this embodiment as described above, the external gear 56 and the internal gear 59 have a step. 518 and 519 are formed, and the load point A of the operation shaft 513, the external gear 56 and the internal gear 59 and the engagement point B of the operating shaft 513, the bending acting on the operating shaft 513 The moment becomes extremely small, and "prying" of the operating shaft 513 can be significantly reduced. . As a result, friction between the operating shaft 513 and the external gear 56 and internal gear 59 It can reduce resistance and greatly increase knuckle power.

[0018] Furthermore, with the knuckle of this embodiment, the "prying" of the operating shaft 513 can be significantly reduced. As a result, structural strength can be increased.

[0019] Here, the knuckle power and strength of the knuckle of this example were measured, and Compared to the knuckles of It was confirmed that

[0020]

[Effect of the idea]

As described above, according to the knuckle according to the present invention, one of the external gear and the internal gear one is externally supported on the eccentric part of the operating shaft, and the other is externally supported on the non-eccentric part of the operating shaft. , the meshing position of the external gear and internal gear is set by rotating the operating shaft. A reclining system in which the seat back is tilted relative to the seat cushion. around the support hole of the operating shaft of the external gear and internal gear. A step is formed to approximately match the load point of the operating shaft and the meshing point of the external gear and internal gear. This reduces the "prying" of the operating shaft and increases knuckle power and strength. This has the effect of increasing the number of employees.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view showing a vehicle seat equipped with a knuckle according to an embodiment of the present invention.

FIG. 2 is a side view showing the knuckle.

FIG. 3 is a sectional view of a main part showing the knuckle.

FIG. 4 is a diagram for explaining the problem to be solved by the present invention.

[Explanation of symbols]

2 seat cushion 3 Seat back 5 Reclining device 56 External gear 59 Internal gear 513 Operation axis 514 Eccentric part 7 Bearing 70 Housing 71 Needle

Claims (1)

[Scope of utility model registration request] Claim 1: One of the external gear 56 and the internal gear 59 is attached to the eccentric portion 514 of the operating shaft 513, and the other is attached to the operating shaft 51.
The external gear 56 and the internal gear 59 are configured to be externally supported on the non-eccentric portions of the external gears 59 and 59 respectively by rotation of the operating shaft 513.
In the knuckle of the reclining device 5 configured to tilt the seat back 3 with respect to the seat cushion 2 by setting the meshing position with the external gear 56 and the internal gear 59, Step 51
8 and 519 are formed, and the load point A of the operating shaft 513 and the meshing point B of the external gear 56 and the internal gear 59 are substantially aligned.