JPH0537302Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is used to operate control means in furniture, such as gas springs used to raise and lower the seat of a chair, the top of a table, etc. The present invention relates to the structure of an attachment device for attaching an operation wire to a connecting body such as an operation lever in a detachable and length-adjustable manner.

[Conventional technology]

In order to remotely control a control means such as a control valve for a gas spring that moves the seat plate of a chair up and down, it is conceivable to connect the control valve and a control lever with a control wire.

In that case, as one of the prior art techniques for connecting the end of the operating wire to the operating lever in a detachable and length-adjustable manner, for example,
As shown in Publication No. 26228, an insertion groove through which the axis of the operating wire can be inserted is formed in the fixture body of the operating lever, and an eccentric cam with a lever is pivotally attached to the insertion groove with a pin to rotate the lever. A configuration is disclosed in which the operating wire is pressed against the inner wall of the insertion groove by the pressing end surface of the eccentric cam and fixed.

[The problem that the idea aims to solve]

According to this configuration, the length of the operating wire can be adjusted steplessly, but if the bulging portion is provided at the end of the operating wire, it is difficult to pass that portion into the gap between the insertion groove and the eccentric cam pressing end surface. The end of the operating wire is straight.
must be done.

In addition, when this type of operating wire is operated, a force is applied in the direction along the axis of the operating wire, so if the pressing force is insufficient due to wear or deformation of the pressing end surface of the eccentric cam, the operating wire will There is an inconvenience that it may slip out of the insertion groove.

Furthermore, a space for rotating the lever attached to the eccentric cam is also required, which poses the problem that a compact attachment device cannot be achieved.

SUMMARY OF THE INVENTION An object of the present invention is to provide a mounting device which eliminates the drawbacks of the prior art and also allows easy operation of mounting the operating wire.

[Means to solve the problem]

To achieve this objective, the present invention provides a mounting device for removably connecting one end of an operating wire for operating a control means such as a gas spring in furniture such as a chair to a connecting body such as an operating lever. , a non-slip portion is provided on one side of the connecting body which is removably engaged with the cable end fitting of the operating wire, and a slip preventing portion for the non-slip portion of the connecting body is provided on the connecting body to prevent the slipping. A pair of left and right elastic holding parts are provided on both left and right sides of the part to hold the connecting body in a manner that it cannot be removed.

[Functions and effects of the idea]

According to this configuration, the cable end fitting at the end of the operating wire and the connecting body are removably engaged, so compared to the conventional straight one without a bulge at the end of the operating wire. The connection between the connecting body and the operating wire is strong.

In addition, the connecting body of the operating lever etc. is provided with a pair of elastic holding parts on both the left and right sides of the slip prevention part.
If the connecting body is inserted against the elastic force of this elastic holding part, it will not be able to be removed, and the non-slip part provided on one side of the connecting body will come into contact with the slip preventing part provided on the connecting body. Since they do not slip against each other in the closed state, the connecting body can be attached to the connecting body with a so-called one-touch operation, and the removal work is similarly easy.

Since the anti-slip portion provided on one side of the connecting body and the anti-slip portion provided on the connecting body are configured so that they do not slip against each other when they are in contact with each other, the installation length of the operating wire is This has the effect of making adjustment extremely easy.

Moreover, the height of the elastic holding part provided on the connecting body only needs to be high enough to prevent the connecting body from coming off, and the work space required for attachment and detachment is small, which also has the effect of making the entire attachment device more compact. It is.

〔Example〕

Next, an embodiment in which the present invention is applied to a chair will be described. The chair 1 shown in FIG. 1 has a cylindrical support 2a.
The chair is made up of a leg 2 having a control means 3 which is a gas spring for raising and lowering the leg 2, a mounting frame 4 which is raised and lowered by the control means 3, and a backrest support frame 7 which is rotatably attached to the rear of the mounting frame 4.

The mounting frame 4 supports the upper outer periphery of the lifting control means 3 at five fitting holes, and the front part of the top plate 6 and the front of the mounting frame 4 are located above the upper part with an appropriate gap between them. The rear part of the mounting frame 4 and the lower end of the backrest support frame 7 are connected via a link 9 and connecting pins 10, 11, and the The rear end of the top plate body 6 and the base of the backrest support frame 7 are connected by a support pin 12, the front end is attached to a bracket 14 rotatably attached to the pivot shaft 8, and the rear end is connected to the backrest support frame 7. The rear end of the top plate 6 rotates upward due to the extension of the rocking gas spring 13 attached to the connecting pin 11 on the support frame 7 side, and at the same time the backrest support frame 7
is constructed so that it rotates upward (see Figure 3).

On the top surface of the top plate body 6, there is a seat plate 1 with a cushion.
The cover body 17 covers the mounting frame body 4 from below.

A cylindrical fitting hole 5 is formed in the mounting frame 4 so that the upper outer periphery of the control means 3 for lifting and lowering is inserted from below and tightly fitted, and the control means 3 is fitted into the fitting hole 5. A push rod 18, which is a push rod for a control valve, projects upward from the upper end of the control valve.

Between the top surface of the mounting frame body 4 and the bottom surface of the top plate body 6,
A space is provided in which an operating rod 19 for pressing the control valve push portion 18 of the control means 3 can be disposed, and either the mounting frame 4 or the top plate 6 is provided with an operating rod 19. A mounting device 16 having a structure described later is provided for this purpose.

As shown in FIGS. 4, 5, and 7, the operating rod 19 is formed to have an L-shape in side view with a longitudinal axis 19a and a tip 19b, and the tip 19b is connected to the pusher 18. The other end is formed as a wire engaging portion 19c. This wire engaging portion 19
In c, one end engaging part (spherical shape) 22a of the operating wire 22, which will be described later, has a recess 23 into which it fits and engages, and a notched groove that communicates with the recess 23 and allows the operating wire 22 to be inserted at right angles to its axis. 24.

Further, in the continuous portion between the longitudinal axis 19a and the tip portion 19b of the operating rod 19, there are rotating support shafts 20, 2 having circular cross sections on both left and right sides perpendicular to the longitudinal axis.
0 is integrally provided in a protruding manner.

A retaining portion 21, 21 having a substantially semicircular cross section is integrally provided at the tip of each of the pivot shafts 20, 20, respectively. Each of the retaining portions 21 in this embodiment is located approximately in the upper half of the circular cross section of each rotation support shaft 20 (see FIG. 7).

One embodiment of the mounting device 16 includes a control means 3 in the mounting frame 4, as shown in FIGS.
A pair of left and right bearing portions 25, 25 that are upwardly open and approximately semicircular are provided on the sides of the fitting hole 5, and the tip of the operating rod is sandwiched between the left and right bearing portions 25, 25. 19b, and a cutout-shaped guide portion 26 having a circumferential surface of an approximately quarter-circular arc facing downward on both left and right outer sides of the bearing portions 25, 25;
It consists of 26.

Therefore, the notch portion of each of the guide portions 26 forms a communication portion of approximately a quarter arc with respect to the upwardly open substantially semicircular bearing portion 25, and in the communication portion, the above-mentioned Although it is possible to insert and remove the locking portion 21 of the operating rod 19, which has a substantially semicircular cross section, along the narrow side (radius side of the circle), it is impossible to insert and remove the locking portion 21 on the wide side (diameter side of the circle). Become.

As shown in FIG. 6, the mounting frame 4 has a square hole 28 passing through it vertically so as to communicate with the insertion passage 27 between the left and right bearings 25, 25 in the mounting device 16. When the longitudinal axis 19a of the operating rod 19 is dropped downward into the mounting device 16, the rotation support shaft 20 fits into the bearing portion 25 at right angles to the axis thereof, and the same fitting The retaining part 21 can be inserted into the inner peripheral side of the guide part 26 from the notch-like communication part of each guide part 26 in the matching direction.

Reference numeral 29 denotes a guide tube for the operating wire 22, and one end of this flexible guide tube 29 is inserted upward into a mounting seat 30 that is recessed in the upper surface near the square hole 28 in the mounting frame 4. A passage groove 31 is provided in which the operating wire 22 passes.

Therefore, the operating rod 19 mounted on the mounting device 16
The longitudinal axis 19a extends from the square hole 28 toward the lower surface of the mounting frame 4, and the operating wire 22, one end of which is engaged with the recess 23 of the longitudinal axis 19a, extends upward as shown in FIG.

The guide tube 29 has two holes 32 in the top plate 6,
Arm portions 6a and 6b extend diagonally forward from both left and right sides of the front portion of the top plate.
On the lower surface of one of the arm portions 6a, a downward open engagement groove 34 is provided on the back side and an upward open engagement groove 35 is provided adjacently on the outside, and the guide tube 29 is fitted into both open grooves 34 and 35. Insert the upward open groove 35.
A protrusion 36 is provided on the outer edge of the guide tube 29 so that the other end surface of the guide tube 29 comes into contact with the guide tube 29 so that it cannot be removed outwardly.

Furthermore, a pair of left and right bearing grooves 38, 38 that support the left and right rotation shafts 39, 39 of the operating lever 37 are formed in the one arm portion 6a in an upwardly open shape, and the seat plate 15 is attached from above. In this state, the operating lever 37 is configured so that it cannot be removed (the eighth
(see figure), the other end of the operating wire 22 protruding from the 35 upward open grooves is detachably attached to the operating lever 37, which is the connecting body, via the connector 40, and the operating lever 37 is rotated upward. When the operation lever 1 is moved, the operation wire 22 is pulled out and the operation rod 1
Rotate the longitudinal axis 19a of 9 upward, and the tip portion 19
In this configuration, the push portion 18 of the control means 3 is pressed from above at step b.

12 to 14 show a connecting body 40, and one end of the connecting body 40 has an operating wire 22.
A recessed engagement portion 42 that can detachably engage a cable end fitting 41 fixed to the other end, such as a spherical cable end fitting 41;
A wire groove 43 through which the operating wire 22 can pass is provided on the other end of the connecting body, and the wide surface of the other end of the connecting body has a sawtooth-like cross section that is uneven at appropriate regular intervals in the axial direction of the operating wire 22. A stop portion 44 is integrally provided.

9 to 11 show the operating lever 37,
The operation lever 37 is provided with a through hole 45 through which the connecting body 40 can be inserted in the longitudinal direction,
A slip preventing portion 46 is provided on the upper surface of the operating lever at a position adjacent to the through hole 45 to correspond to the slip preventing portion 44 of the connecting body 40. Therefore, the cross section of the slip prevention portion 46 is also sawtooth (see FIG. 11).

On the upper surface of the operating lever 37, a pair of left and right elastic holding parts 47, 47 are provided on both the left and right sides of the slip prevention part 46 to hold the connecting body 40 so that it cannot be removed.
After the connecting body 40 is fitted, a locking hook portion 48 is integrally provided at the upper end of each elastic holding portion 47 in order to hold the left and right sides of the upper surface of the connecting body 40 and prevent it from coming off. It is provided.

In the embodiment, the operating lever 37 is made of semi-hard synthetic resin, and the pair of elastic holding parts 47, 47 are integrally formed, but in other embodiments, the slip prevention part 46 and the pair of elastic holding parts 47 are integrally formed. The component consisting of the elastic holding parts 47, 47 may be molded separately from the operating lever 37, and both may be fixed with adhesive or the like.

With this configuration, when the operating rod 19 is inserted into the square hole 28 with the longitudinal axis 19a facing vertically downward, as shown in FIG. At the same time, the right and left rotational support shafts 20, 20 in the left and right sides of 19 fit into the upwardly open bearing parts 25, 25, and at the same time, the left and right retaining parts 21, 21 pass through the edges of the guide parts 26, 26 into the guide parts 26. inserted into.

Then, the tip portion 19b of the operating rod 19 is rotated so as to approach the pusher portion 18 projecting upward from the mounting frame 4, and in this state, the lengths of the operating wire 22 and the guide tube 29 are aligned, The ends of the operating wire 22 and the guide tube 29 are set at the corresponding locations as indicated by the solid lines in FIG. 4.

On the other hand, the other end of the guide tube 29 is fitted into the open grooves 34 and 35 on the lower surface of the arm portion 6a, and the end surface of the guide tube 29 is brought into contact with the protrusion 36 so that it cannot be pulled out. In a state where the cable end fitting 41 is fitted and engaged with the engaging part of the connecting body 40, the first
The operating lever 3 as shown by the dashed line in the figure and FIG.
7 through the through hole 45 and push the connecting body 40 between the left and right elastic holding parts 47, 47 against the elastic force, the non-slip part 4 on the lower surface of the connecting body 40
4 and the slip prevention part 46 of the operation lever 37 are joined so as to mesh with each other, and the pair of elastic holding parts 47, 47 prevent the connecting body 40 from coming off upwardly. The connecting body 40 can be attached to the operating lever 37 very easily while adjusting the tension.

When the operating lever 37 is rotated upward, the operating wire 22 is pulled through the connecting body 40, and when the tip 19b of the operating rod 19 is rotated downward, the push portion 18 of the gas spring 13 is rotated.
can be pressed.

In this way, by simply pushing the connecting body 40 between the pair of elastic holding parts 47, 47 of the operating lever 37, which is the connecting body, the non-slip part 44 of the connecting body 40 can be prevented from sliding against the slip preventing part 46 between them. The operation wire 22 can be easily attached to the operation lever 37 via the connection body 40, and the connection body 40 can be easily attached to and removed from the operation lever 37. Adjusting the length is also extremely easy.

Further, the connecting body 40 and even the operating wire 22 after being attached will not fall off or come off inadvertently.

When the longitudinal axis 19a of the operating rod 19 is rotated upward, the tip 19b presses the push part 18, and the control means 3, which is a gas spring for lifting, becomes free, and a load is applied to the seat plate 15 from above. When it is not engaged, the mounting frame 4 rises.

Therefore, the seat plate 15 can be adjusted depending on the sitting height of the person sitting.
After adjusting the height by holding down, press the operating lever 3.
All you have to do is take your finger off 7.

Further, reference numeral 49 indicates the rocking gas spring 1
This is an operating lever for pressing and operating the push rod No. 3, and is attached to the other arm portion 6b of the top plate 6. An operating wire is connected to this operating lever 49 with the same configuration as in the previous embodiment. 50 can be detachably connected via the connecting body 51.

Furthermore, although not shown in the drawings, the connection body for operating the push part of the control means such as a gas spring is provided with a slip prevention part for the slip prevention part of the connection body to which one end of the operation wire is removably engaged. It goes without saying that a pair of left and right elastic holding parts can be provided on both the left and right sides of the slip prevention part to hold the connecting body in an unremovable manner.

Furthermore, in each of the embodiments described above, the anti-slip portion in the connecting body and the anti-slip portion in the connecting body such as the operating lever are formed by using one of the hook pieces having a mushroom-shaped bulge at the tip and the other being the hook piece. Of course, it is also possible to use a hook-and-loop fastener consisting of so-called male and female members, which are soft fiber-like loop members that are entangled and locked.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a side view of the chair, Fig. 2 is an enlarged plan view of the top plate, mounting frame, etc., Fig. 3 is a side view of Fig. 2, and Fig. 4 is a side view of the chair. is the second
5 is a partially cutaway plan view of the mounting frame, FIG. 6 is a sectional view of FIG. 5, FIG. 7 is a perspective view of the operating lever, and FIG. 4 is a - side view, FIG. 9 is a plan view of the operating lever,
Fig. 10 is a side view, Fig. 11 is - of Fig. 9.
A cross-sectional view, Fig. 12 is a plan view of the connecting body, Fig. 13
The figure is a partially cutaway side view of FIG.
Fig. 14 is a side view, Fig. 15 is - of Fig. 11.
FIG. 3 is an enlarged cross-sectional view. 1...Chair, 2...Legs, 3...Control means, 1
3... Rocking gas spring, 4... Mounting frame body, 5... Fitting hole, 6... Top plate body, 7... Back support frame, 15... Seat plate, 16... Mounting device, 18
... Push section, 19 ... Operation rod, 19b ... Tip part, 20, 20 ... Rotation shaft, 21, 21 ...
Retaining part, 25, 25...Bearing part, 26, 26
...Guiding part, 27...Insertion path, 28...Square hole, 2
2,50... Operating wire, 29... Guide tube, 3
7, 49... Operating lever, 40, 51... Connecting body, 41... Cable end fitting, 42... Engaging portion, 43...
...Wire groove, 44...Slip prevention part, 45...Through hole, 46...Slip prevention part, 47, 47...Elastic holding part, 48...Latching hook part.

Claims (1)

[Scope of utility model registration request] In a mounting device for detachably connecting one end of an operating wire for operating a control means such as a gas spring in furniture such as a chair to a connecting body such as an operating lever, the cable end fitting of the operating wire is attached. A non-slip part is provided on one side of the connecting body that is removably engaged, and a slip preventing part for the non-slip part of the connecting body is provided on the connecting body, and the connecting body is provided on both left and right sides of the sliding preventing part. A device for attaching a wire for operating a control means, characterized in that it is provided with a pair of left and right elastic holding portions that hold it so that it cannot be removed.