JPH0536601Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an automatic mounting device for a tension spring for suspending a pad receiving member on a seat frame in, for example, a vehicle seat.

[Conventional technology]

BACKGROUND OF THE INVENTION As a cushion structure for a seat of a vehicle, for example, there is a cushion structure as disclosed in ``Kokoku Publication No. 1982-5882''.

That is, as shown in FIG. 6, this cushion structure consists of a plurality of wires 3 stretched between the front and rear frames 1a and 1b of a seat frame 1 disposed inside the seat and between both side members 2a and 2b. A so-called blind-shaped pad receiving member 5 formed by inserting a spacing member 4 between the wires 3 is elastically stretched through a plurality of tension springs S on both sides, and by this elasticity, It is designed to provide a comfortable cushioning effect.

To install the tension spring S of the pad receiving member 5 in the seat frame 1, one of the hooks formed symmetrically at both ends of the tension spring S is engaged with a side member of the pad receiving member 5, and the other is attached to the side member of the pad receiving member 5. First, the required number of screws are attached to either the front or rear side of the seat frame 1 in order from one side by inserting them into the engagement holes 6 as the engagement portions formed in the seat frame 1, and then in the same manner on the other side. A required number of them can also be attached to the sides.

However, installing such tension springs requires an extremely large amount of labor and is inefficient, so in recent years, tension springs have been developed in which multiple tension springs are installed simultaneously using industrial robots. An automatic spring mounting device has been proposed.

[Problem that the invention attempts to solve]

However, when installing multiple tension springs at the same time using such industrial robots, it is difficult to insert the terminal hooks of all the tension springs in a manner that corresponds accurately to the engagement holes in the seat frame, and this problem has to be overcome. In order to do this, it is necessary to ensure that the diameter of the engagement holes is sufficient, the intervals between the engagement holes are equal, and the assembly angles of the tension springs are parallel to each other, and the seat frame and tension springs are It is a necessary condition to almost eliminate dimensional errors, and in order to satisfy all of these conditions, design changes would be required and processing costs would increase, which was actually impossible.

The present invention has been made in view of these points, and an object of the present invention is to provide an automatic tension spring mounting device that has a simple configuration and can easily install a plurality of tension springs at the same time.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention simultaneously captures a plurality of tension springs having hooks at both ends by a moving device, and uses the end hooks as engagement parts formed on the seat frame. The automatic tension spring mounting device is configured to be mounted in a hole, and the tension spring mounting device includes a guide member for regulating the tension spring in the circumferential direction and in the longitudinal direction so as to correspond to the engagement hole. It is made up of.

[Effect]

The measures described above operate as follows.

The plurality of tension springs captured by the moving device are circumferentially and longitudinally restricted by the guide member when being attached to the seat frame, and the end hooks are guided to the engagement holes. As a result, multiple tension springs can be smoothly installed at the same time.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 5.

In the figure, reference numeral 11 indicates the entire automatic installation device for tension springs S that stretches the pad receiving member 5 on the seat frame 1 as shown in FIG. 6, and 12 is a parts feeder. It has a separation mechanism for tension springs S, and a large number of tension springs S fed into this parts feeder 12 are separated individually by the vibration of the parts feeder 12 and are separated from each other in parallel to the linear feeder 13. The tension spring S is discharged onto the guide 13a, and is further sent to the supply chute 14 by the vibration of the linear feeder 13. The tension spring S sent to the supply chute 14 in this way is
Once a certain number of tension springs S have been stocked in the delivery device 15 installed in the middle of the inclined portion of 4, the delivery device 15 is actuated by the detection by the sensor 16, and as a result, the tension springs S are is the required number (4 in this example)
be dropped.

When the tension spring S is dropped in this manner, the cylinder 18a is actuated by the detection of the proximity switch 17, whereby the pusher 18 takes out the tension spring S and transfers it to the supply chute 14 provided in the moving device 19. By repeating this operation, the tension springs S are continuously supplied in an inclined state and aligned (fourth
(see figure).

When the tension spring S is continuously supplied to the continuous supply portion 14a of the supply chute 14 in this way, the cylinder 21 is actuated by the detection of the proximity switch 20 provided at the tip of the supply chute 14, and the ejecting member is removed. 22 is raised, whereby a predetermined number of tension springs S are simultaneously taken out at predetermined intervals from the continuous supply section 14a of the supply chute 14. When the tension springs S are taken out in this manner, the moving device 23 is activated to simultaneously capture a predetermined number of tension springs S and move them to a mounting base, which will be described later, on which the seat frame 1 is placed and fixed.

An industrial robot is used as this moving device 23, and its tip is provided with four manipulators 24 corresponding to the engagement holes 6 of the seat frame 1, and these manipulators 24 actuate the cylinders 24a. opened and closed simultaneously by
The tension spring S is held in a grip portion 24b formed inside the tip portion.

This manipulator 24 is provided in an inclined shape so as to catch the tension spring S taken out at an angle in the orthogonal direction as described above, and one grip has an L-shaped grip located above the grip portion 24b. A shaped contact piece 25 is fixed to support the upper surface of the tension spring S when it is captured, and to maintain a secure capture state in the orthogonal direction.

Additionally, direction regulating members 26 are provided above the continuous supply section 14a of the supply chute 14 so as to correspond to the take-out members 22, respectively. This direction regulating member 26 has guide side walls 26a, 2 facing each other.
6b, its upper and lower ends are formed in an open shape, and the interval between the respective center parts is formed to be slightly larger than the wire diameter of the tension spring S, so that the manipulator 24 of the moving device 23 Therefore, when the tension spring S is captured and lifted, one terminal hook Sf passes between the guide side walls 26a and 26b, and the tension spring S is restricted in the circumferential direction, thereby reducing the inclination of the terminal hook. is vertically corrected.

Tension spring S configured like this
Behind the take-out and moving device 19, that is, at the next stage, there is provided a tension spring mounting device according to the present invention, for example, a device for mounting a pad receiving member on a seat frame using a tension spring.

The tension spring mounting device 30 includes a positioning guide mechanism 32 that is disposed at the front and rear of a mounting base 31 on which the seat frame 1 is placed and fixed, and that holds the seat frame 1 and guides the tension spring S, and a positioning guide mechanism 32 that guides the tension spring S. The pad receiving member tensioning mechanism 33 is arranged at the pad receiving member stretching mechanism 33.

The positioning guide mechanism 32 includes a clamp member 34 that holds the seat frame 1, and a clamp member 34 that holds the seat frame 1.
The clamp member 34 is provided with a guide member 35 that guides the tension spring S, and the clamp member 34 is attached to the front frame 1a and the rear frame 1b of the seat frame 1.
are mounted on bearings 37 erected corresponding to the outside of the mounting blocks 36 on which are mounted at both ends thereof, respectively.
The clamp member 34 is mounted on a shaft 38 so as to be undulated corresponding to the upper surface of the mounting block 36, and the inner end of the clamp member 34 is bent into an L-shape to form an engaging portion 34a.
is formed, and forms a clamping space with an engagement step surface 36a formed on the upper surface side of the mounting block 36, and the outer end is connected to the mounting base 31.
It is connected to a cylinder 39 disposed at , and is raised and lowered by the operation of this cylinder 39 .

Then, the support member 40 is horizontally fixed between the clamp members 34 which are disposed corresponding to both the front and rear ends of the seat frame 1 on the mounting base 31. A plurality of guide members 35 are disposed at 40 in a direction perpendicular to the clamp member 34 and correspond to the engagement holes 6 of the seat frame 1. The guide member 35 is made up of guide side walls 35a, 35b and an inner wall 35c that face each other. The inner wall 35 of the guide member 35 serves as a circumferential regulating surface, and its upper end is open.
c is a longitudinal regulating surface, and an inclined portion 35d is formed on the upper part thereof.

In this example, the guide member 35 is constructed by attaching a pair of guide pieces 41a and 41b to a plate-shaped bracket 42 fixed to the support member 40 in a direction perpendicular to the clamp member 34 while sandwiching them from both sides. The inner surfaces of 41a and 41b are connected to the guide side wall 35.
A and 35b, the inner edge of the plate-shaped bracket 42 is an inner wall 35c, and the upper part of the inner edge of the plate-shaped bracket 42 is inclined outward to form an inclined portion 35d.

Positioning guide mechanism 32 configured in this way
When setting the seat frame 1 on the mounting base 31, the clamp member 34 is kept upright, and the seat frame 1 is placed on the mounting block 36 of the mounting base 31.
By operating the cylinder 39 after setting the clamp member 34, the clamp member 34 is rotated so that the front and rear frames 1a and 1b of the seat frame 1 are connected to the engaging portion 34a of the clamp member 34 and the mounting block 3.
As the clamp member 34 rotates, the guide members 35, which are clamped and held in a fixed state between the engagement step surfaces 36a of the clamp members 34 and 35, which are horizontally laid down when the clamp member 34 is in the upright state, move into the respective engagement holes 6 as the clamp member 34 rotates. It corresponds approximately perpendicularly to .

In addition, the pad receiving member stretching mechanism 33 is mounted on the mounting base 31.
A tension arm 43 is movable by a cylinder (not shown) and is movable in the inward and outward direction, that is, in the direction approaching the front frame 1a of the seat frame 1 on which the seat frame 1 is placed and fixed; A fixed arm 44 is fixed to a portion of the rear frame 1b, that is, a portion close to the rear frame 1b.
Notch-shaped engagement portions 43 are provided on the outer sides of the tips of 3 and 44.
a, 44a are formed.

The pad receiving member stretching mechanism 33 configured in this manner stretches the pad receiving member 5 between both arms 43 and 44 while the tension arm 43 is moved inward.
A tension arm 4 is inserted between the two side members 2a and 2b, respectively.
3, the engaging part 43a and the engaging part 44 of the fixed arm 44
a, and in this state, the side member 2a of the pad receiving member 5 is pulled toward the front frame 1a by moving the tension arm 43 outward by operating a cylinder (not shown). Then, the pad receiving member 5 is placed in a tensioned state, and the spacing between the pad receiving members 5 is set to a spacing that allows the tension spring S to be attached.

A tension spring S is mounted between the seat frame 1 placed and fixed on the mounting base 31 in this manner and the pad receiving member 5 held in tension at the center thereof. To install the tension springs S, as described above, the four tension springs S transferred from the continuous supply section 14a of the supply chute 14 by the moving device 23 are vertically lowered from above the guide member 35, and one The terminal hook Sf is inserted into the engagement hole 6 of the seat frame 1, and the other terminal hook Sf is locked to the side members 2a and 2b of the pad receiving member 5, so that the four terminal hooks are attached at the same time.

In this mounting operation, when one end hook Sf of the tension spring A passes through the guide member 35, circumferential regulation is performed between the guide side walls 35a and 35b, and as a result, the end hook Sf is tilted. has been corrected, and this terminal hook SF
The outer edge of the tension spring S is pressed against the inner wall 35c of the guide member 35 from the inclined portion 35d, so that the tension spring S is moved in the longitudinal direction against the grip force of the manipulator 26, and the tension spring S is restricted in the longitudinal direction. Terminal hook Sf is fixed to seat frame 1 with individual dimensional variations absorbed.
is guided and inserted into the engagement hole 6 of.

When the terminal hook Sf is inserted into the engagement hole 6, the tension spring S is transferred and installed in an inclined state as described above, so that the tip of the terminal hook Sf, which is bent in an arc, are opposed to the engagement hole 6 in a direction that facilitates insertion,
Therefore, the terminal hook Sf can be inserted smoothly.

In this way, when installing the tension spring S, the terminal hook Sf is guided to the engagement hole 6 by the guide member 35, so that multiple tension springs S can be installed smoothly at the same time, thereby reducing work time. It is possible to shorten the time.

When the tension spring S is attached to the seat frame 1 as described above, the moving device 23 returns and the tension arm 43 of the pad receiving member tensioning mechanism 33 is moved inward to extend the pad receiving member 5. In order to release the tension, the pad receiving member 5 is elastically supported by the tension spring S only with respect to the seat frame 1.

With the above operations, the work of constructing the pad receiving member 5 on the seat frame 1 is completed.

[Effect of idea]

As described above, according to the present invention, the tension spring mounting device is provided with a guide member for regulating and guiding the tension spring in the circumferential direction and length direction, thereby engaging the terminal hook of the tension spring. Since the tension spring can be attached to the engagement part accurately, multiple tension springs with varying dimensions can be easily installed at the same time, making it easier to install the tension spring. The work time is significantly reduced compared to conventional tension spring automatic mounting devices, and work efficiency can be improved.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the main parts of the tension spring mounting device according to the present invention, Fig. 2 is a vertical sectional view of the same, and Fig. 3 is an overall view of the automatic tension spring mounting device to which the present invention is applied. , FIG. 4 is a longitudinal sectional view of the tension spring removal and movement part, FIG. 5 is an explanatory view of circumferential direction regulation of the tension spring by the guide member, and FIG. 6 is a plan view of the seat frame. In the figure, 1 is a seat frame, 6 is an engagement hole, 23
is a moving device, 35 is a guide member, and S is a tension spring.

Claims (1)

[Claims for Utility Model Registration] A tension spring in which a plurality of tension springs having hooks at both ends are captured simultaneously by a moving device, and each of the end hooks is attached to an engaging portion formed on a frame member. An automatic spring mounting device, wherein the tension spring mounting device is provided with guide members for regulating the tension spring in the circumferential direction and in the longitudinal direction so as to correspond to the engaging portions, respectively, An automatic tension spring mounting device characterized in that the terminal hook is guided to the engaging portion by the guide member when the tension spring is mounted.