JPH0576345U - Both sides reclining device - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] To provide a low weight, low cost double-sided reclining device. [Structure] Upper arm 33 is fixed to lower arm 31 fixed to the seat cushion side via hinge pin 32.
And an arm hinge pin 45 for tilting the pole 38 to press the back of the pole 38 to engage with the ratchet 35, and one end of the arm hinge pin 45 locked to the lower arm 31 and the other end of the release arm 41.
, The arm hinge pin presses the back part of the pole with a spring, and the movement of one release arm is transmitted to the other release arm via the connecting pipe 47 rotatably provided between the hinge pins. In the device, the connection between the release arm 41 and the connecting pipe 47 is made by connecting the connecting pipe 4
The base end portion is fixed to 7, and the rotating end portion is configured to use the connecting plate 44 with which the arm hinge pin 45 is engaged.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is directed to a lower arm fixed to a seat cushion side, an upper arm tiltably provided to the lower arm via a hinge pin, a ratchet that rotates integrally with the upper arm, and a pin to the lower arm. A rotatably provided pole that can be engaged with and disengaged from the ratchet, a release arm having a base end portion rotatably provided on the hinge pin, and a rotary portion of the release arm that is fixed to the back portion of the pole. The arm hinge pin that presses the pole to engage the ratchet, one end is locked to the lower arm, the other end is locked to the release arm, and the arm hinge pin is connected to the back of the pole. A spring that urges in the direction to press is provided on both sides, and the movement of one release arm can be rotated between the hinge pins. It relates both side reclining apparatus for transmitting to the other Rerizua over arm through a connecting pipe provided in the.

[0002]

[Prior Art]

 Next, a conventional example will be described with reference to the drawings. FIG. 3 is a side view showing one of the conventional double-sided reclining devices, and FIG. 4 is a sectional view taken along line AA in FIG.

First, reference numeral 1 is a lower arm fixed to the seat cushion side, and an upper arm 3 is pivotally supported on the lower arm 1 by a hinge pin 2 so as to be tiltable. The upper part of the upper arm 3 is fixed to the seat back side, and is biased in the forward tilt direction by the spiral spring 4. A ratchet 5 is fixed to the upper arm 3 and rotates integrally with the upper arm 3. A pin 7 whose one end is inserted into an arc-shaped long hole 6 of the lower arm 1 is fixed to the ratchet 5. The maximum rotation angle of the upper arm 3 is determined by the rotation range of the pin 7.

Reference numeral 8 denotes a pole that engages with the ratchet 5, and is rotatably attached to the lower arm 1 with a pin 9. A pin 10 is planted in the pole 8. Reference numeral 11 denotes a release arm pivotally attached to the hinge pin 2 and biased counterclockwise in FIG. 3 by a tension spring 20. The pin 10 is inserted into a cam hole 12 of the release arm. The extended portion of the release arm 11 is a handle 13.

In this conventional example, no hand is formed on the other release arm. An arm plate 14 has a base end pivotally attached to the hinge pin 2 and a rotary end fixed to the release arm 11 by an arm hinge pin 15 which is loosely fitted in a circular arc guide groove 1a formed in the lower arm 1. Is. The arm plate 14 is prevented from coming off by an E ring 23 that engages with the hinge pin 2.

A spacer 16 that contacts the back of the pole 8 is inserted through the large-diameter portion of the arm hinge pin 15. Reference numeral 17 is a connecting pipe having a hook plate 18 fixed to the end portion by welding or the like, and the small diameter portion of the hinge pin 2 is inserted at one end side.

Further, the tip portion of the hook plate 18 is inserted into the connecting hole 19 of the arm plate 14. The width W1 of the tip portion of the hook plate 18 is selected to be smaller than the width W2 of the connecting hole 19 of the arm plate 14. The size of W1-W2 is such that there is some play, and is determined according to the above-mentioned variation in the lock position. The play is selected to be larger than the so-called lock position shift amount between the release arm 11 and the release arm of the other reclining device. Usually, it is about 2 to 5 mm.

Reference numeral 21 denotes a substantially triangular sub-plate arranged between the release arm 11 and the pole 8, one end of which engages with the hinge pin 2 and the other two ends of which are lower arm. It is locked with a pin. The sub-plate 21 covers the meshing portion between the pole 8 and the ratchet 5, and regulates the axial displacement of the hinge pin 2 at the meshing between the pole 8 and the ratchet 5.

Further, the lower arm 1, the ratchet 5, the upper arm 3, the sub plate 21, and the release arm 11 are prohibited from moving in the axial direction of the hinge pin 2 by the flange portion 2 a of the hinge pin 2 and the E ring 22 engaging with the hinge pin 2. Has been done.

Next, the operation of the above configuration will be described. When the handle 13 (release arm 11) is rotated clockwise in FIG. 3 against the biasing force of the tension spring 20, the pawl 8 is guided by the cam hole 12 and rotated counterclockwise to move the ratchet. The engagement with the upper arm 3 is released, and the upper arm 3 becomes tiltable with respect to the lower arm 1.

On the other hand, the rotational force of the handle 13 is transmitted to the inner reclining device via the hook plate 18 inserted into the connecting hole 19 of the arm plate 14 and the connecting pipe 17 to which the hook plate 18 is fixed. ..

Then, when the upper arm 3 is tilted and a desired reclining angle is obtained, the force for rotating the handle 13 is released. Then, the pawl 8 is again engaged with the ratchet 5 by the urging force of the tension spring 20 to be in the locked state.

[0013]

[Problems to be solved by the device]

 In recent years, there has been a great demand for weight reduction of reclining devices. However, in the double-sided reclining device having the above-described configuration, since the mechanical components for interlocking one movement of the release arm 11 are the arm plate 14 and the hook plate 18, it is difficult to reduce the weight of the reclining device.

Further, since the number of parts is large, the cost is high. The present invention has been made in view of the above problems, and an object thereof is to provide a double-sided reclining device having a low weight and a low cost.

[0015]

[Means for Solving the Problems]

 The invention according to claim 1 for solving the above-mentioned problems, the lower arm fixed to the seat cushion side, the upper arm tiltably provided via the hinge pin with respect to the lower arm, and the upper arm rotate integrally. Ratchet, a pole that is rotatably provided on the lower arm by using a pin, and can be engaged with and disengaged from the ratchet, a release arm having a proximal end portion rotatably provided on the hinge pin, and a rotating portion of the release arm. And an arm hinge pin that presses the back of the pawl to engage the pawl and the ratchet, one end of which is locked to the lower arm and the other end of which is locked to the release arm. A spring for biasing the arm hinge pin in the direction of pressing the back of the pole is provided on both sides, and one release arm's In a two-sided reclining device that transmits motion to the other release arm via a connecting pipe rotatably provided between the hinge pins, the connection between the release arm and the connecting pipe is a base end portion of the connecting pipe. Is fixed, and a connecting plate with which the arm hinge pin is engaged is used at the rotating end.

The invention according to claim 2 is such that an elongated hole is formed in the rotating end portion of the connecting plate according to claim 1, and the arm hinge pin is loosely fitted in the elongated hole. ..

[0017]

[Action]

 In the two-sided reclining device according to the first aspect of the present invention, the movement of one of the release arms is such that the arm hinge pin fixed to the one release arm, the one release plate, and the connecting plate of the other via the connecting pipe. Transmitted to the other arm hinge pin and the other release arm.

In the double-sided reclining device according to the second aspect of the present invention, since the arm hinge pin is loosely fitted in the long hole of the connecting plate, it is possible to absorb variations in the reclining locks on both sides.

[0019]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing one of the two-sided reclining devices of one embodiment of the present invention, which is a sectional view taken along the line BB in FIG. 2, and FIG. Is.

In the figure, reference numeral 31 is a lower arm fixed to the seat cushion side, and an upper arm 33 is pivotally supported by a hinge pin 32 on the lower arm 31 so as to be tiltable. The upper part of the upper arm 33 is fixed to the seat back side, and is biased in the forward tilt direction by a spiral spring 34. A ratchet 35 is fixed to the upper arm 33 and rotates integrally with the upper arm 33. A pin 37 is fixed to the ratchet 35, one end of which is inserted into an arc-shaped long hole 36 of the lower arm 31. The maximum rotation angle of the upper arm 33 is determined by the rotation range of the pin 37.

Reference numeral 38 denotes a pole that engages with the ratchet 35, and is rotatably attached to the lower arm 31 with a pin 39. A pin 40 is planted on the pole 38. Reference numeral 41 denotes a release arm pivotally attached to the hinge pin 32 and biased counterclockwise in FIG. 1 by a tension spring 50. The pin 40 is inserted into a cam hole 42 of the release arm. The extended portion of the release arm 41 is a handle 43.

A handle is not formed on the other release arm of the present embodiment. A connecting pipe 47 is rotatably fitted to the hinge pins 32 on both sides. The base end of the connecting plate 44 is fixed to the connecting pipe 47 by a method such as welding. An elongated hole 44a is formed at the rotating end of the connecting plate 44.

A base end portion of an arm hinge pin 45 is attached to a tip end portion of the release arm 41, and a middle diameter portion 45 a of the arm hinge pin 45 is inserted with a spacer 46 that abuts against a back portion of the pole 38. , Is loosely fitted in a circular arc guide groove 31a formed in the lower arm 31. A large-diameter portion 45b that functions as a spacer and a small-diameter portion 45c that loosely fits in the long hole 44a of the connecting plate 44 are formed on the tip end side of the arm hinge pin 45.

The relationship between the diameter R2 of the small diameter portion of the arm hinge pin 45 and the major diameter R1 of the elongated hole 44a (R1> R2) is such that there is some play, and how much the above-mentioned variation in the lock position occurs. It is determined according to. It is selected so that a play larger than the so-called shift amount of the lock position occurs between the release arm 41 and the release arm of the other reclining device. Usually, it is about 2 to 5 mm.

An E-ring 60 is attached to the tip of the arm hinge pin 45 to prevent it from coming off. Reference numeral 51 denotes a substantially triangular sub-plate arranged between the release arm 41 and the pole 38, one end of which engages with the hinge pin 32, and the other two ends of which are pinned to the lower arm 31. It is locked. The sub-plate 51 covers the meshing portion between the pole 38 and the ratchet 35, and regulates the axial displacement of the hinge pin 32 when the pole 38 and the ratchet 35 mesh.

Further, the lower arm 31, the ratchet 35, the upper arm 33, the sub plate 51, and the release arm 41 are prevented from moving in the axial direction of the hinge pin 32 by the flange portion 32 a of the hinge pin 32 and the E ring 52 engaged with the hinge pin 32. Has been.

Next, the operation of the above configuration will be described. When the handle 43 (release arm 41) is rotated clockwise in FIG. 2 against the biasing force of the tension spring 50, the pawl 38 is guided by the cam hole 42 and rotated counterclockwise, thereby rotating the ratchet. The engagement with 35 is released, and the upper arm 33 becomes tiltable with respect to the lower arm 31.

On the other hand, the rotational force of the handle 43 is transmitted to the inner reclining device via the arm hinge pin 45, the connecting plate 44, and the connecting pipe 47 to which the base ends of the connecting plates 44 are fixed. ..

Then, when the upper arm 33 is tilted and a desired reclining angle is obtained, the force for rotating the handle 43 is released. Then, the pawl 38 is again engaged with the ratchet 35 by the urging force of the tension spring 50, and the pawl 38 is locked.

According to the above configuration, in the mechanical component that transmits the rotational force of the handle 43 to the other reclining device, the hook plate and the arm plate in the conventional example are configured by one connecting plate 44 in this example. I chose Therefore, the weight and cost of the reclining device can be reduced.

[0031]

[Effect of the device]

 As described above, according to the present invention, a low-weight, low-cost double-sided reclining device can be realized.

[Brief description of drawings]

FIG. 1 is a side view showing one of the two-sided reclining devices of one embodiment of the present invention, which is a sectional view taken along line BB in FIG.

FIG. 2 is a side view showing one of the two-sided reclining devices according to one embodiment of the present invention.

FIG. 3 is a side view showing one of conventional double-sided reclining devices.

4 is a cross-sectional view taken along the line AA in FIG.

[Explanation of symbols]

 31 Lower Arm 32 Hinge Pin 33 Upper Arm 35 Ratchet 38 Pole 41 Release Arm 44 Connecting Plate 44a Slot 45 Arm Hinge Pin 47 Connecting Pipe

Claims (2)

[Scope of utility model registration request] 1. A lower arm (31) fixed to a seat cushion side, an upper arm (33) tiltably provided to the lower arm (31) via a hinge pin (32), and the upper arm (33). ) And the lower arm (3)
1) is a rotatably provided pin (37), and a pawl (38) that can be engaged with and disengaged from the ratchet (35), and a release arm (base end of which is rotatably provided on the hinge pin (32)). 41) and an arm hinge pin (45) fixed to the rotating part of the release arm (41) and pressing the back part of the pawl (38) to engage the pawl (38) with the ratchet (35). And one end of the arm hinge pin (4) is locked to the lower arm (31) and the other end is locked to the release arm (41).
5) springs for urging the back of the pole (38) in a pressing direction are provided on both sides, and the movement of one release arm (41) is rotatably provided between the hinge pins (32). In a two-sided reclining device that transmits to the other release arm (41) via a pipe (47), the release arm (41) and the connecting pipe (47) are connected to each other at a base end portion of the connecting pipe (47). The two-sided reclining device is characterized in that a connecting plate (44) to which the arm hinge pin (45) is engaged is used at the rotating end. 2. An elongated hole (44a) is formed in a rotating end portion of the connecting plate (44), and the arm hinge pin (45) is loosely fitted in the elongated hole (44a). Item 2. The double-sided reclining device according to item 1.