JPS6312010B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that serves as both a side support and an armrest for a seat. The present invention relates to a side support and armrest device that functions as an armrest when set in a substantially horizontal state.

For example, in order to protect a child sitting on a seat in a vehicle, there are cases where it is desired to set the armrest attached to the seat back diagonally downward, and there are cases where it is desired to change the setting angle of the armrest depending on the preference of the seated person. be.

In order to meet such demands, the object of the present invention is to provide a seat for which the frame attached to the seat back can be selectively used as a side support and an armrest, and the set angle of the frame can also be adjusted when used as an armrest. This will become clear from the detailed description below with reference to the drawings.

Figure 1, Figure 2, Figure 3, Figure 4, Figure 5A,
B, C, D, E, and F are shown in one embodiment of the present invention, and include a shaft 4, a frame 5, and a cam plate 1.
7, a lever 25, and a guide portion of external teeth 28 attached to the lever 25.

The shaft 4 is attached to a bracket 2, and the bracket 2 is fixed to the seat bag 1 with bolts 3.

The frame 5 is formed into a front type, and one side wall 6 is provided with a mounting hole 8, and the other side wall 7 is formed with a mounting window 9 for a plate 10. In addition to an attachment hole 11 formed concentrically with the attachment hole 8, the plate 10 is provided with an attachment hole for a stopper pin 16, an attachment hole for a lever 25, a spring bracket for a tension spring 30, etc. This plate 10 is the frame 5
After assembling various parts inside, the mounting window 9
The above-mentioned necessary members are also attached to the plate 10 itself, and it is fixed to the other side wall 7 of the frame 5 by welding or screwing.
The frame 5 is rotatably attached to the shaft 4 via bushes 12 and 13 fitted into the mounting holes 8 and 11, and is inserted with a washer 14 in between, and a bent cotter pin 15 is inserted.
This prevents it from escaping from the shaft 4. Further, a stopper pin 16 that projects from the plate 10 into the frame 5 is attached to the frame 5.

The cam plate 17 has an oval-shaped attachment hole 18 formed in the center, a stopper pin guide surface 19 formed on the outer peripheral surface of one half, and first and second stopper pieces 20 and 21 formed on both sides thereof. , an inner tooth 22 attached to the outer end surface, an attachment hole for the leaf spring 31 formed in the vicinity thereof, and a long groove 23 for guiding the claw of the guide piece 33. The cam plate 17 has the mounting hole 18 fitted into the oval-shaped portion of the shaft 4, and is fitted into the frame 5 with a spacer 24 in between, and is fixed so as not to rotate.

A stopper pin 1 protruding within the frame 5
6 and the first and second stopper pieces 20 and 21 formed on the cam plate 17 serve as stopper means for regulating the frame 5 to a functional position as a side support and a reference position O for switching to a functional state as an armrest. It consists of

Note that the reference position O for switching to the functional state as the armrest is set at an arbitrary position away from the functional position as the side support in the circumferential direction with the center of the shaft 4 as the center of the circle.

The lever 25 has a pin 2 protruding from one end.
6. It has a pin 27 provided at the other end, and external teeth 28 which are attached to the working end, which is the other end, and can mesh with the internal teeth 22. Also lever 2
5 is disposed inside the frame 5, and a pin 26 is inserted into a mounting hole formed in the plate 10 of the frame 5, and an E-ring 29 is fitted to the tip of the pin 26. With the coupling structure, the pin 26 is set as the center of rotation. It is mounted so that it can rotate. Furthermore, the lever 25 is operated by inserting another pin 27 into a long hole formed in the plate 10 of the frame 5, and by a tension spring 30 provided between this pin 27 and a spring bracket attached to the plate 10. The external tooth 2 attached to the end side
8 is pulled so that it is positioned inside the internal teeth 22.

The internal teeth 22 and the external teeth 28 mesh with each other when the frame 5 is switched from the reference position O to the functional position as an armrest, and when the frame 5 is set in the functional position as an armrest. It constitutes an engaging means that allows fine adjustment of the angle.

The guide portion of the external tooth 28 is composed of a leaf spring 31 and a guide piece 33. The leaf spring 31
is formed into a side lip type, has a bracket 32, and is placed directly below the internal teeth 22. The guide piece 33 has a triangular shape on its side, and has a claw 3 at one end.
4 and a pin 35 at the other end, the pawl 34 is loosely fitted into the long groove 23 formed in the cam plate 17, and the pin 35 is inserted into the bracket 32 of the leaf spring 31.
The pin 35 is inserted through an attachment hole formed in the cam plate 17 and an attachment hole formed in the cam plate 17, and is attached via a coupling structure in which an E-ring 36 is fitted to the end of the pin 35. When the frame 5 is switched from the reference position O to the functional position as an armrest by cooperation of the leaf spring 31 and the guide piece 33, the external part attached to the lever 25 is rotated. The teeth 28 can be guided on a trajectory that can mesh with the internal teeth 22 attached to the cam plate 17.

In the side support and armrest device configured as described above, the stopper pin 16 attached to the frame 5 comes into contact with the first stopper piece 20 formed on the cam plate 17, and the frame 5 is tilted when viewed from the side as shown in FIG. When set downward, it functions as a side support to prevent a child from falling off the seat, for example.

Then, the frame 5 is rotated from the functional position as the side support in the direction of the arrow in FIG. 1 around the shaft 4, and as shown in FIG. To switch to the functional state, rotate it once to the reference position O.

Next, move frame 5 from the state shown in Figure 5A by arrow a.
When the lever 25 is rotated in the direction shown, the lever 25 remains in the same position with the frame 5 until one end of the external teeth 28 attached to its working end comes into contact with the end of the guide piece 33 on the pawl 34 side. Move around shaft 4 together.

External teeth 2 are provided at one end of the guide piece 33 on the claw 34 side.
When the frame 5 is further rotated in the direction of the arrow a after the ends of the guide pieces 8 come into contact with each other, the guide piece 33 is pushed forward by the external teeth 28, as shown in FIG. 5B, and the guide piece 33
is guided by the long groove 23 formed in the cam plate 17 and the claw 34 of the guide piece 33 fitted therein, and rotates in the direction of arrow A in FIG. 5B with the pin 35 as the center of rotation while compressing the leaf spring 31 be rotated.

Note that when the frame 5 is rotated in the same direction, the guide piece 33 and the external tooth 28 come into a state where the other end of the external tooth 28 is in contact with the end of the guide piece 33, as shown in FIG. 5C. , the moment when the external teeth 28 are slightly moved from the state shown in FIG. 5C due to the rotation of the frame 5,
The guide piece 3 is moved by the elastic force of the compressed leaf spring 31.
3 is rotated in the direction of arrow B as shown in FIG.
It becomes a form that can guide.

When the frame 5 is rotated in the opposite direction from the configuration shown in FIG. 5D, that is, in the direction of the arrow b in FIG.
is moved in the direction of arrow C in the figure, and the external teeth 28 are guided to a position where they can mesh with the internal teeth 22 attached to the cam plate 17. When the frame 5 is further rotated in the direction of arrow b from this state, the fifth As shown in Figure E, the inner teeth 22 and the outer teeth 28 are engaged, and the frame 5 is supported by the tooth shapes of the inner teeth 22 and the outer teeth 28 so as not to be reversed, and is set in a functional position as an armrest.

Next, from the state shown in FIG. 5E, frame 5
By rotating the frame 5 in the direction of arrow b and changing the engagement position between the internal teeth 22 and the external teeth 28 as shown in FIG. be able to.

Further, when the frame 5 is rotated from the functional position as an armrest in the direction of the arrow b to disengage the internal teeth 22 and the external teeth 28, the tension spring 30
The lever 25 rotates under the action of
It is moved to be located inside 2. After preventing the external teeth 28 from meshing with the internal teeth 22 in this way, the frame 5 is rotated in the direction of the arrow a,
By moving the frame 5 to a position where the stopper pin 16 provided on the frame 5 comes into contact with the first stopper piece 20 formed on the cam plate 17, the frame 5 can be returned to its functional position as a side support.

In the present invention, the specific structures of the stopper means and the engaging means are not limited to those shown in the drawings and described above, and depending on the mechanism adopted for the engaging means, the leaf spring 31 and the guide piece 3 constituting the guide portion may be used.
3 may be omitted, and depending on the purpose, only the frame 5 on one side of the seat back 1 may be used as both a side support and an armrest.

According to the present invention described above, the frame can be set diagonally downward on the side of the seat bag and used as a side support, or set in a substantially horizontal direction and used selectively as an armrest.

Furthermore, when the present invention is used as an armrest, the setting angle can be finely adjusted through the engaging means, so the setting angle of the frame can be adjusted according to the user's preference.

It should be noted that the above description merely shows one embodiment of the present invention, and it will be obvious that various modifications and changes can be made without departing from the spirit of the present invention.

[Brief explanation of the drawing]

Fig. 1 is a schematic explanatory diagram of the device of the present invention in use as a side support, Fig. 2 is a schematic explanatory diagram of the device in use as an armrest, and Fig. 3 is an exploded view of the constituent members of an embodiment of the device of the present invention. A perspective view, FIG. 4 is a sectional view taken along a vertical plane along the axial direction of the shaft in an assembled state, and FIGS. 5A, B, C, D, and E.
and F are action explanatory diagrams, respectively. O... Reference position for switching to the functional state as an armrest, 1... Seat back, 4... Shaft, 5... Frame, 16... Stopper pin,
17... Cam plate, 20, 21... First and second stopper pieces, 22... Internal teeth, 25... Lever, 28
... External tooth, 30 ... Tension spring, 31 ... Leaf spring, 33 ... Guide piece.

Claims (1)

[Claims] 1. A side support for a seat, which includes a frame rotatably supported on a shaft protruding from the side of a seat back, and the frame is rotatably held in a position as a side support and a position as an armrest. and a cam plate is fixed to the shaft, first and second stopper pieces are formed on the cam plate, and internal teeth and a guide piece are formed on the cam plate.
A lever having external teeth that meshes with the internal teeth is rotatably supported on one side wall of the frame by a spring bias in a direction that meshes with the internal teeth, and the frame is rotated about the shaft. stopper pins are provided that engage with first and second stopper pieces formed on the cam plate to regulate the positions of the frame between a side support position and an armrest position when the frame is When switching from a position as a side support to a position as an armrest, the lever having the external teeth is guided by the guide piece, and the internal teeth fixed to the cam plate mesh with the external teeth. Features a device that doubles as a side support and armrest for the seat.