JPH0535736Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention mainly relates to a side lock device for a seat back such as a rear seat of a van-type automobile.

(Prior Art) As a conventional side lock device for a seat bag of this type, there is one shown in, for example, Japanese Utility Model Application No. 61-62636. A striker having a locking hole is fixed to the side of the vehicle interior, while a locking pin is provided on the side of the seat back via a guide sleeve so as to be retractable and opposite to the striker.
In addition, a compression coil spring is provided that constantly biases the lock pin in the protruding direction so as to fit the lock pin in the lock hole, and one end is connected to the tail of the lock pin to lead out the tension wire to the upper part of the seat back.
An operating knob for releasing the lock is provided at the leading end of the seat back.From the locked state in which the lock pin is fitted into the lock hole, by operating the operating knob, the lock pin is retracted from the lock hole via a tension wire, and the seat back is released. It is now possible to unlock the Note that some devices use a link mechanism instead of the wire.

(Problems to be Solved by the Invention) By the way, the conventional seat bag side lock device described above has a compression coil spring that urges the lock pin, and a tension wire or link mechanism that moves the lock pin backward against this spring. ,
Since it is equipped with an operation knob, there are problems in that the number of parts is large, the configuration is complicated, and manufacturing and assembly are troublesome, leading to high costs.

The present invention was conceived in view of the above circumstances, and an object of the present invention is to provide a side lock device for a seat bag, which can be manufactured and assembled easily by reducing the number of parts, and can reduce costs.

[Structure of the idea]

(Means for Solving the Problem) In order to achieve the above-mentioned object, the present invention provides a lock pin on the side of the seat bag so as to be retractable and protrudes from the seat bag, and the seat bag is held at a predetermined angular position by the lock pin projecting and fitting. In a side lock device for a seat bag in which a lock hole is provided on the side of the passenger compartment, a wire spring is provided which engages the tail portion of the lock pin in a state substantially perpendicular to the tail portion of the lock pin, and the wire spring is always directed in the direction in which the lock pin projects. One end side of the wire spring is fixed to the frame of the seat bag in the energized state, and the other free end of the wire spring is extended through a long hole to the back surface of the seat bag, and the extending end is It is characterized by being configured with an operation knob for unlocking.

(Function) With the above configuration, the lock pin is biased by the wire spring, protrudes from the side of the seat bag, and fits into the lock hole, thereby locking and holding the seat bag at a predetermined angular position, and the seat bag can be operated from this locked state. By operating the knob, the wire spring causes the lock pin to retreat from the lock hole, resulting in an unlocked state. In other words, a single wire spring can serve as both a conventional compression coil spring and a tension wire or link mechanism, resulting in a very simple structure with fewer parts and a reduced number of configurations.

(Example) An example of the present invention will be described below with reference to the drawings.
First, in Fig. 3, 1 in the figure is a rear seat installed in the back seat of a van-type vehicle, 2 is the seat cushion, and 3 is a hinge (not shown) attached to the upper rear end of the seat cushion 2. This is a seat back that can be rotated back and forth. Lock pins 4 are provided on both sides of the seat bag 3 (one side not shown) so as to be retractable. On the other hand, a receiving member 6 is fixed to a side portion (wheel house) 5 of the vehicle body facing the lock pin 4. This receiving member 6 is a band-shaped member that is curved in an arc along the locus of movement of the lock pin 4 as the seat back 3 rotates back and forth, and a plurality of lock holes 7 are formed at intervals in the longitudinal direction. By selectively protruding and fitting the lock pins 4 into these, the seat bag 3 can be held at a predetermined angular position.

Here, the lock pin 4 is inserted through a guide sleeve 9 fixed to a side bracket 8a of a frame 8 of the seat bag 3, as shown in FIG. In other words, frame 8 of seat bag 3
As shown in Fig. 2, it consists of a pair of left and right side brackets 8a made of molded material, and a back plate 8b that covers the entire back of the seat back fixed to the back side of the side brackets 8a, and a cylindrical guide is provided in a recessed part in the middle of the left and right side brackets 8a. A sleeve 9 passes through the sleeve 9 and is fixed by welding or the like, and a lock pin 4 is inserted therethrough so as to be retractable as shown in FIG.
The lock pin 4 is inserted into the guide sleeve 9 while being covered with a silencer cover 4a made of synthetic resin from the tip to the proximal end.

An engagement hole 10 is formed in the tail portion of the lock pin 4, which is perpendicular to the axis thereof. A wire spring 11 is provided so as to loosely fit into the engagement hole 10 so as to pass vertically through the lock pin 4 in a state perpendicular to the lock pin 4. This wire spring 1
1 is a pocket-shaped receiving part 12 whose lower end side is bent into a crank shape, and whose lower end side bent part 11a is formed at the lower part of the back plate 8b of the frame 8.
Further, the lower end extending end 11b thereof is fixed by passing through the raised part 13 at the lower part of the back plate 8b, so that the wire spring 11 is prevented from rotating except for elastically bending. , the lock pin 4 is always energized in the protruding direction.

The upper free end 11c of the wire spring 11 is bent toward the back surface and extends to the back surface side of the seat back 3 through an arc-shaped elongated hole 14 formed in the back plate 8b of the frame 8. A lock release operation knob 15 is attached to this extended end, and by pushing and moving this operation knob 15 in the direction of the arrow with a finger, the wire spring 11 is elastically deformed and moves as shown in the imaginary line, thereby locking the lock pin 4. It is starting to make the world go backwards.

Therefore, with the configuration described above, lock pin 4
is energized by a wire spring 11, protrudes from the side of the seat bag 3, and fits into one of the plurality of lock holes 7, thereby locking and holding the seat bag 3 in a predetermined angular position. From this locked state, by pushing and moving the operating knob 15 in the direction of the arrow with your finger from the luggage compartment side on the back of the seat bag 3, the wire spring 11
is elastically deformed and moves as shown in the imaginary line, causing the lock pin 4 to retreat and separate from the lock hole 7, resulting in an unlocked state. In this state, seat back 3
is rotatable and can be tilted back and forth. Further, when returning the seat back 3 to the upright state, raise the seat back 3 to the desired angular position while pressing the operation knob 15 in the same manner as described above.
Then, when the operating knob 15 is released, the wire spring 11 automatically returns to its original state due to its own elastic force, and locks the lock pin 4.
is projected and fitted into the lock hole 7 to be in the locked state.

In other words, the single wire spring 11 acts to urge the lock pin 4 to protrude and to move the lock pin 4 backward in conjunction with the operation of the operation knob 15, and the conventional compression coil spring, tension wire, or link mechanism is not used. This eliminates the need for this, and the number of parts is reduced accordingly, resulting in a very simple structure that can reduce the number of components.

[Effect of idea]

Since the present invention has been made as described above, a single wire spring can serve as both a conventional compression coil spring and a tension wire or link mechanism, thereby reducing the number of parts, simplifying manufacturing and assembly, and reducing costs. This is a side lock device for the seat bag that can be used to lock the seat bag.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a perspective view of the main parts, Fig. 2 is a schematic perspective view of the frame of the seat bag, and Fig. 3 is a perspective view of the rear seat installed in the vehicle interior. FIG. 4 is a perspective view of the seat bag seen from the back side. 1...Rear seat, 2...Seat cushion,
3... Seat back, 4... Lock pin, 5...
Side part of vehicle compartment, 7... Lock hole, 8... Seat back frame, 9... Guide sleeve, 11... Wire spring, 14... Long hole, 15... Operation knob.

Claims (1)

[Scope of utility model registration request] In a side lock device for a seat bag, in which a lock pin is removably provided on the side of the seat bag, and a lock hole is provided on the side of the passenger compartment, the lock pin protrudes and fits to hold the seat bag at a predetermined angular position. A wire spring is provided by engaging in a state substantially orthogonal to the lock pin, and one end side portion of the wire spring is fixed to the frame of the seat bag such that the wire spring is always biased in a direction in which the lock pin projects. A side lock device for a seat bag, characterized in that the other free end of the wire spring extends through a long hole on the back surface of the seat bag, and a lock release operation knob is provided at this extended end.