JP2530912Y2 - Operation member mounting structure for chair - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a mounting structure of an operating member in a chair, and more particularly, to connecting a height of a seat plate and a tilt angle of a backrest plate to a control lever by using a gas cylinder. The present invention relates to a seat operating member and a back operating member mounting structure in a chair that uses a seat operating member and a back operating member that are rotatably mounted coaxially.

[0002]

2. Description of the Related Art A conventional operation member mounting structure in a chair is formed on side pieces on both sides of a mounting member of a seat plate, as described in Japanese Patent Application No. Hei. At the same time that the shaft is inserted through the mounting hole, the shaft holes of the seat operating member and the back operating member are inserted at both ends of the shaft and the movement of both operating members is restricted. Positioning the side piece of the mounting body in the recess of the formed crank portion, the two operating members are mounted rotatably coaxially, and the operating levers are fitted to the shaft cylinders of both operating members,
By operating the operation levers independently by the operation lever, the operation pins of the seat gas cylinder and the back gas cylinder are operated via the interlocking mechanism.

[0003] However, when such an operation member mounting structure is employed, the mounting strength of the seat operation member and the back operation member is certainly improved, and the rotation operation can be stabilized. And skill. That is, the seat operating member and the back operating member are respectively arranged at predetermined positions of the mounting body of the seat plate, and in this state, the shaft body is formed in the side pieces on both sides of the mounting body, and the seat operating member and the back operating member are provided. This is because the two mounting holes and the shaft holes of the seat operating member and the back operating member must be set coaxially.

[0004]

SUMMARY OF THE INVENTION In view of the above-mentioned situation, the present invention is intended to solve the problem by using a single shaft for the seat operating member and the back operating member as a mounting member for the seat plate. An object of the present invention is to provide an operating member mounting structure for a chair in which the mounting operation is extremely easy.

[0005]

According to the present invention, in order to solve the above-mentioned problems, the height adjustment of the seat plate and the adjustment of the tilt angle of the backrest plate are connected to the operation lever using a gas cylinder and are coaxial. In the chair made with the seat operation member and the back operation member that are rotatably mounted with the head, the head that protrudes from the shaft at the base end is integrally formed in the mounting hole that opens in the side piece on both sides of the mounting body of the seat plate The shaft hole of one operating member is rotatably inserted into the distal end of the shaft body, and one side piece is positioned in the recess of the crank part, and The other operating member is rotatably fitted to a base end of the shaft member from a notch formed along the longitudinal direction of the shaft hole, and the other side piece and the head of the shaft body are positioned in the concave portion of the crank portion. The operation member mounting structure in the chair thus constructed.

[0006]

The operation member mounting structure of the chair according to the present invention having the above-mentioned contents is arranged such that one of the side pieces on both sides of the mounting body of the seat plate is located in the recess of the crank portion of the back operation member. In a state where the mounting hole formed in the side piece and the shaft hole are substantially aligned, the mounting of the shaft hole of one operating member and the one side piece from outside the mounting hole formed in the other side piece of the shaft body. When the head is inserted through the hole and the head of the shaft is located on the outer surface of the other side piece, then the other operating member is positioned with the head of the other side piece and the shaft in the recess of the crank portion. At the same time, it is rotatably fitted and mounted on the shaft portion of the shaft body from the notch formed along the shaft hole. In this state, since the concave portions of the crank portions of both operation members respectively fit the side pieces of the attachment body, the movement to the side is restricted, and the head of the shaft body is in contact with the outer surface of the side piece. The other operation member is stopped by the inner wall on one side in the concave portion of the crank portion, and the lateral movement is restricted.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention;

FIG. 1 is an abbreviated exploded perspective view of a chair according to the present invention as viewed from below, FIGS. 2 to 4 show an assembled state of main parts, and FIGS. 5 to 7 show main members. Reference numeral 1 denotes a seat operating lever, 2 denotes a back operating lever, 3 denotes a seat operating member, 4 denotes a back operating member, 5 denotes a shaft, and 6 denotes a mounting body.

As shown in FIGS. 1 to 4, the chair according to the present invention is configured such that the mounting body 6 is rotatable or non-rotatable on a seat gas cylinder 7 for height adjustment mounted on a support shaft erected on a leg. A seat plate (not shown) is fixed to the upper surface of the mounting body 6, and a backrest receiver 8 to which a backrest plate (not shown) is attached at the rear is pivotally mounted on a fixed support shaft 9 so as to be tiltable back and forth.
Further, the backrest receiver 8 is disposed between the tip of the tilting plate 10 extending obliquely downward from the fixed support shaft 9 of the backrest receiver 8 and an appropriate position of the mounting body 6.
The back gas cylinder 11 for adjusting the tilt angle of the vehicle is pivotally connected.

The present invention is directed to a shaft body in which a disc-shaped head 15 bulging from a shaft portion 14 is integrally formed at a base end with mounting holes 13 opened in side pieces 12 on both sides of the mounting body. 5, the shaft hole 16 of the back operation member 4 is rotatably inserted into the tip of the shaft body 5 and one side piece 12 is positioned in the concave portion 18 of the crank portion 17; The seat operating member 3 is provided at the base end of the shaft 5.
Is inserted rotatably from a notch 20 formed along the length direction of the shaft hole 19, and the other side piece 12 and the head 15 of the shaft body 5 are located in the concave portion 22 of the crank portion 21. It is.

A distal end of the shaft rod 23 of the seat operating member 3 is formed in an axial connecting hole formed in a base end 24 of the seat operating lever 1.
25, the shaft rod
The tip of 23 is a hollow portion 26 that is continuously opened to the connection hole 25.
The abutment is abutted against a step 28 of an axially extending rib 27 protruding inward, and is mounted. On the other hand, the back operation lever 2 having the same shape as the seat operation lever 1 has the tip end of the shaft cylinder 29 of the back operation member 4 non-rotatably inserted into the connection hole 25 so as to prevent the shaft cylinder 29 from slipping. The distal end and the distal end of the shaft body 5 are abutted against the step portion 28 of the rib 27 at the same time so as to be mounted. Here, since the back operation lever 2 is the same as the seat operation lever 1, the reference numerals of the respective parts are the same as those of the seat operation lever 1, and the description thereof will be omitted. Hereinafter, the present invention will be described in more detail.

First, the seat operation lever 1 is shown in FIGS.
As shown in (c) and (d), a base end 24 and a handle 30 bent continuously from the base end 24 are provided, and the base end 24 has a polygonal opening to the base end, in this embodiment, a hexagonal cross section. In addition to forming the connecting hole 25 having a hollow portion 26 continuously opened in the distal direction, a rib 27 extending in the axial direction is protruded from the hollow portion 26, and the connecting hole 25 and the hollow portion 26 are formed. A step 28 of the rib 27 is formed at the boundary of the opening 27, and substantially square engaging holes 31 communicating with the connecting hole 25 are formed on the base end side to face each other. Two slits 32, 32 open to the base end are formed. When the seat operation lever 1 is integrally formed of synthetic resin, the provision of the hollow portion 26 can reduce the amount of resin and prevent sink during molding. Since the back operation lever 2 is the same, the description is omitted.

Next, the seat operating member 3 is shown in FIGS.
As shown in (c), a crank part 21 for bypassing the side piece 12 of the mounting body 6 is formed at the center of the shaft rod 23, and a recess 22 is formed in the crank part 21. A shaft hole 19 through which the shaft portion 14 of the shaft body 5 is rotatably loosely inserted is formed in the axial direction on the base end side of the recess 22 of the shaft 22. That is, the shaft hole 19 is
It is completely open inside. In addition, the tip of the shaft 23 is formed into a solid polygonal pillar, in this embodiment, a hexagonal pillar so as to be non-rotatably fitted into the connection hole 25 of the seat operation lever 1 so as to be fitted therein. Triangular dowels 33, 33, which are fitted to the engaging holes 31 of the seat operating lever 1 so as to prevent them from falling off, are provided on the opposing surfaces. Further, the seat gas cylinder 7 is provided at the base end of the shaft rod 23.
A locking portion 35 that connects one end of a wire 34 that constitutes a seat interlocking mechanism for operating the lever is projected from the side surface. The width of the notch 20 formed along the shaft hole 19 is set to be necessary and sufficient to fit into the shaft portion 14 of the shaft body 5 and not to be easily removed. Further, the position of the notch 20 needs to be set so that when the wire 34 is pulled by the rotation operation of the seat operating lever 1, the seat operating member 3 does not come off the shaft portion 14 due to the reaction force. It is open on the side where you pull 34.

Further, the back operation member 4 is composed of the members (a), (b),
As shown in (c) and (d), a side piece of the mounting body 6 is provided at the center of the barrel 29.
A crank portion 17 for bypassing 12 is formed, and an axial hole 16 through which the shaft body 5 is rotatably loosely inserted is formed in the axial direction,
The shaft hole 16 is completely opened in the concave portion 18 of the crank portion 17. Further, a polygonal pillar is provided so that the tip end of the shaft cylinder 29 can be inserted into the connection hole 15 of the back operation lever 2 in a non-rotatable manner.
In the present embodiment, a hexagonal prism shape is formed, and triangular dowels 34, 34 which are fitted to the engaging holes 31 of the back operation lever 2 so as to prevent slipping out are formed on the side surfaces thereof. Further, a cam 37 for pressing an operation plate 36 constituting a back interlocking mechanism for operating the back gas cylinder 11 is formed at the base end of the shaft cylinder 29, and axial holes are formed at both axial ends of the cam 37. The shaft portion 14 of the shaft body 5 to be inserted into 16 is cut out so as to be completely exposed.

Thus, the seat operating member 3 and the back operating member 4
In order to rotatably attach the back operation member 4 to the coaxial state, first, as shown in FIG. 1, the back operation member 4 is fixed so that one side piece 12 of the attachment body 6 is located in the concave portion 18 of the crank portion 17 thereof. The shaft portion 14 of the shaft body 5 is attached to the mounting hole 13 of the
After that, it is inserted into the shaft hole 16 of the back operation member 4 and at the same time is inserted through the mounting hole 13 of one side piece 12, and the head 15 of the shaft body 5 is brought into contact with the outer surface of the other side piece 12. . Then, the seat operating member 3 is positioned with the other side piece 12 and the head 15 of the shaft 5 in the recess 22 of the crank portion 21, and the shaft 5
The shaft hole 19 is rotatably fitted to the cutout 20 from the notch 20 and mounted.
Then, the connecting hole 25 of the seat operating lever 1 is non-rotatably fitted to the distal end of the shaft rod 23 of the seat operating member 3 so as not to be rotatable, and the engaging hole 31 and the triangular dowel 33 are engaged with the stopper. On the other hand, the connecting hole 25 of the back operation lever 2 is
Is made to be unrotatable and fitted externally, and the engagement hole 31 and the triangular dowel 34 are locked to engage. In this state, the seat operating lever 1 and the seat operating member 3 can rotate integrally, and the back operating lever 2 and the back operating member 4 can integrally rotate. It is possible to rotate independently of the member.

Although the notch 20 is formed in the seat operating member 3 in the present embodiment, it may be formed in the back operating member 4. In this case, the shaft rod 23 of the seat operation member 3 is a shaft cylinder having a hole in the center, and the shaft cylinder 29 of the back operation member 4 is a solid shaft rod. The structure in which the operation lever 1 or 2 and the shaft rod 23 of the seat operation member 3 or the shaft cylinder 29 of the back operation member 4 are non-rotatably connected is not limited to the above-described example. The structure is not limited to the above-described example, and the seat operating lever 1 and the seat operating member 3 and the back operating lever 2 and the back operating member 4 can be integrally formed.

Further, in order to make the rotation of the seat operating lever 1 interlock with the operation of the seat gas cylinder 7, as shown in FIGS. A substantially rectangular shaped driven member which is vertically rotatable.
A wire 34 is stretched between the distal end of the arm 40 of the 39 and the locking portion 35 of the seat operating member 3 and the seat operating lever 1 is rotated to rotate the driven member 39 via the wire 34 as shown in FIG. Then, the operating pin is pressed by the pressing piece 41 of the driven member 39.
It pushes 38 in.

In order to interlock the rotation of the back operation lever 2 with the operation of the back gas cylinder 11, the shaft portion 14 of the shaft body 5 exposed on both sides of the cam 37 is connected to both sides of a connecting member 42 having a substantially U-shaped cross section. The plates 43, 43 are rotatably fitted, and the side plates 43, 43 are
A base end of an operation plate 36 is pivotally mounted on 43, dimensions are set so that an end of the cam 37 abuts on an outer surface of a distal end portion thereof, and an operation pin 44 side of the back gas cylinder 11 is connected to an intermediate portion of the connecting member 42. Board 45
, The operation pin 44 is brought into contact with the center of the inner surface of the operation plate 36, and the back operation lever 2 is rotated,
The operation plate 36 is rotated by the cam 37 as shown in FIGS.
Further, the operation pin 36 is pushed in by the operation plate 36.

The seat gas cylinder 7 and the back gas cylinder 11 employed in the present invention are known in the art, and the piston rod can be extended and retracted with respect to the cylinder, and the operating pin 38 or 44 projecting from the tip of the piston rod is provided. If you press
The rod is automatically protruded when there is no load, the rod can be pushed in when a load is applied, and the rod is locked when the operation pin is protruded.

[0020]

According to the operating member mounting structure of the chair according to the present invention as described above, the height adjustment of the seat plate and the tilt angle adjustment of the backrest plate are connected to the operating lever by using the gas cylinder, and are coaxial. In a chair that is made up of a seat operating member and a back operating member that is rotatably mounted in a state, a head that protrudes from the shaft at the base end is integrated into a mounting hole that is opened in the side piece on both sides of the mounting body of the seat plate. At the same time as inserting the formed shaft, the shaft hole of one operating member is rotatably inserted into the tip of the shaft, and one side piece is positioned in the concave portion of the crank portion. The other operating member is rotatably fitted into the base end of the body from a notch formed along the longitudinal direction of the shaft hole, and the other side piece and the head of the shaft body are inserted into the concave portion of the crank portion. Because it is located in the recess of the crank part of one operation member,
Attachment where one of the side pieces on both sides of the attachment body of the seat plate is positioned, and the shaft body is formed on the other side piece with the mounting hole formed on the side piece and the shaft hole substantially aligned with each other. From the outside of the hole, penetrate the shaft hole of one operating member and the mounting hole of one side piece, position the head of the shaft body on the outer surface of the other side piece, and then move the other operating member to its crank. Since the other side piece and the head of the shaft body are positioned in the recess of the portion, the shaft is rotatably fitted into the shaft portion of the shaft body from the notch formed along the shaft hole and is mounted. First, one of the operating members can be rotatably mounted on the shaft, and then the other operating member can be rotatably mounted on the shaft. The two operating members can be mounted using one shaft. The assembling work is extremely simple, even though it can be mounted rotatably in the coaxial state. Further, in this state, since the concave portions of the crank portions of the both operation members respectively fit the side pieces of the attachment body, the lateral movement of the both operation members can be restricted, and the heads of the shafts can be moved sideways. Since the outer surface of the piece and the inner wall on one side in the recess of the crank portion of the seat operating member are abutted, the shaft body can also be restricted from moving laterally. Further, the length of the shaft body can be shortened, and the weight and cost can be reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a chair according to the present invention as viewed from below.

FIG. 2 is a plan view showing a main part of the present invention in a partial cross section.

FIG. 3 is a plan view showing a main part of a chair and back interlocking mechanism in a partial cross section.

FIG. 4 is a partial longitudinal sectional side view showing a main part of a chair interlocking mechanism of a chair.

5A and 5B show an operation lever, wherein FIG. 5A is a plan view and FIG.
(C) is a cross-sectional view taken along the line BB of (b), (d)
Is a sectional view taken along line CC

6A and 6B show a seat operation member, wherein FIG. 6A is a plan view and FIG.
(C) is a sectional view taken along the line BB of (a).

7 (a) is a plan view, FIG. 7 (b) is a front view, FIG. 7 (c) is a sectional view taken along line AA of FIG. 7 (a), and FIG. 7 (d) is a sectional view taken along line BB of FIG.
Line cross section

FIG. 8 is a vertical side view of the normal state of FIG. 3;

FIG. 9 is a longitudinal sectional side view showing a state where the operation lever of FIG. 3 is rotated.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 seat operating lever 2 back operating lever 3 seat operating member 4 back operating member 5 shaft body 6 mounting body 7 seat gas cylinder 8 back rest receiver 9 fixed support shaft 10 tilting plate 11 back gas cylinder 12 side piece 13 mounting hole 14 shaft Part 15 Head 16 Shaft hole 17 Crank part 18 Recess 19 Shaft hole 20 Notch 21 Crank part 22 Recess 23 Shaft 24 Base end 25 Connection hole 26 Cavity 27 Rib 28 Step 29 Shaft cylinder 30 Handle 31 Engagement hole 32 Slit 33 Triangular dowel 34 Triangular dowel 35 Locking part 36 Operation plate 37 Cam 38 Operation pin 39 Follower member 40 Arm 41 Pressing piece 42 Connecting member 43 Side plate 44 Operation pin 45 Intermediate plate

Claims (1)

(57) [Scope of request for utility model registration] 1. A seat operation member and a back operation member connected to an operation lever and mounted rotatably coaxially to adjust the height of a seat plate and the tilt angle of a backrest plate using a gas cylinder. In a chair to be performed, a shaft body integrally formed with a head swelling from a shaft portion at a base end is inserted into a mounting hole opened on a side piece on both sides of a mounting member of a seat plate, and at the same time, a tip portion of the shaft body is The shaft hole of one operating member is rotatably inserted and one side piece is positioned in the concave portion of the crank portion, and the other operating member is provided at the base end of the shaft body with the length of the shaft hole. An operating member mounting structure for a chair, wherein said operating member is rotatably fitted from a notch formed along the direction and the other side piece and a head of a shaft body are located in a concave portion of the crank portion.