CN201029635Y - Armrest linked with office chair - Google Patents

Abstract

The utility model relates to an armrest (4) linked with an office chair, characterized in that it comprises a crossbeam (41) and a support rod (42) which are rotatably connected to each other, and the other end of the crossbeam (41) is designed as a movable connection end which is rotatably connected to the side plate of the backrest (1) of the office chair, and the other end of the support rod (42) is designed as a movable connection end which is rotatably connected to the side plate of the seat (2) of the office chair. Compared with the prior art, the armrest linked with the office chair of the utility model can be linked with the change of the angle between the backrest and the seat of the office chair, so that the user can stretch the sitting posture on the office chair and obtain a better rest and comfort feeling.

Description

Armrest linked with office chair

Technical Field The utility model relates to accessories of chairs, in particular to armrests linked with office chairs.

Background Art In the prior art two-point armrest office chair, as shown in Figure 1A, the two-point armrest is generally formed in one piece, lacks movable joints in the middle, and the two ends of the armrest are respectively connected to the back and seat of the office chair. It is fixed and cannot be relatively rotated. Therefore, the angle between the back and the seat of the office chair is completely fixed and cannot be adjusted. When the user is tired from work and needs to rest and adjust, even if the reclining mechanism of the office chair is opened to make the office chair recline, the angle between the back of the office chair and the seat seat cannot be changed. As shown in Figure 1B, the back of the chair and the seat The seats are in one state for a long time and cannot be stretched relatively, which cannot give the user a better sense of rest and comfort.

The content of the utility model The technical problem to be solved by the utility model is to avoid the shortcomings of the above-mentioned prior art and propose an armrest linked with the office chair. During the process, the armrests can be linked with changes in the angle between the chair back and the seat seat, so that the user's sitting posture can be stretched and a better rest comfort can be obtained.

The utility model solves the technical problem and can realize by adopting the following technical solutions:

Designing and using an armrest linked with an office chair, including crossbeams and support rods that are rotatably connected to each other, and the other end of the crossbeam is designed to be a movable connection end that is rotatably connected to the side panels of the back of the office chair, The other end of the support rod is designed as an active connection end that is rotatably connected to the side plate of the seat of the office chair.

The movable connecting end of the beam and the back side panel of the office chair is a connecting boss integrally formed with the beam, and the support rod is designed to be rotatably connected with the side panel of the office chair seat. The connecting end is a connecting boss integrally formed with the support rod; two connecting pieces are also matched, and the connecting piece includes a disc and a cylinder 52 vertically erected from the disc, and the inner wall of the cylinder is cut with a female thread.

A tapered gasket is placed between the connecting boss and the cylinder.

Among the two connecting bosses, at least one of the connecting bosses is provided with at least one arc-shaped positioning groove, and at least one arc-shaped positioning protrusion is provided on the disc corresponding to the connecting piece, and the positioning protrusion is placed in the positioning groove and The length is less than the length of the positioning groove.

Compared with the prior art, the technical effect of the handrail linked by the utility model and the office chair is: 1. The handrail includes a crossbeam and a support rod which are rotatably connected to each other and is rotatably connected with the back of the chair and the seat seat, so that the office chair can recline During the process, the armrest can be linked with the back of the chair and the seat, so that the angle between the back of the chair and the seat can change, so that the user's sitting posture can be stretched, and a better rest comfort can be obtained; 2. Conical cushion The design of the piece makes the end of the armrest tightly combined with the back of the chair and the seat seat and can ensure free rotation; 3. The matching design of the arc positioning groove and the arc positioning protrusion ensures accurate and safe positioning when the chair back is reclined reliable.

Description of drawings

Fig. 1 is a structural schematic diagram of a two-point armrest office chair in the prior art, including Fig. 1A and Fig. 1B;

Fig. 2 is a schematic front view of an office chair equipped with an armrest linked with the office chair according to the present invention, wherein Fig. 2A is a schematic front view of the office chair when it is not reclined, and Fig. 2B is a schematic front view of the office chair when it is reclined;

Fig. 3 is an exploded schematic diagram of the handrail of the utility model linked with the office chair;

Fig. 4 is a schematic top view of the armrest linked with the office chair;

Fig. 5 is a schematic front view of the armrest linked with the office chair;

FIG. 6 is a schematic cross-sectional view of A-A in FIG. 5 .

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Below in conjunction with the preferred embodiments shown in the drawings, further details will be given.

The handrail 4 of the utility model linked with the office chair, as shown in Figure 3 to Figure 5 and with reference to Figure 2, includes a crossbeam 41 and a support rod 42 that are rotatably connected to each other, and the other end of the crossbeam 41 is designed to be compatible with One side panel of the back of the office chair is used as a movable connection end for rotatable connection, and the other end of the support rod 42 is designed as a movable connection end for rotatable connection with the two side panels of the office chair seat. In the present utility model, the specific way that the armrest 4 is rotatably connected with the chair back 1 and the seat seat 2 is as follows: as shown in Figure 2 to Figure 5, the crossbeam 41 is rotatably connected to the side panel of the office chair back 1. The movable connecting end of the connection is the connecting boss 411 integrally formed with the crossbeam 41, and the movable connecting end designed to be rotatably connected with the side panels of the office chair seat 42 is integrally formed with the supporting rod 42 Connecting boss 421; two connecting pieces 5 are also provided as a set, and the connecting piece 5 includes a disc 51 and a cylinder 52 vertically erected from the disc 51, and the inner wall of the cylinder 52 is cut with female threads; the two The cylinder 52 of the connector 5 passes through the through holes 413, 423 on the connecting bosses 411, 421 and the openings on the side plates of the chair back 1 and seat 2 respectively, and then connects to the inner sides of the respective side plates. It is fixed by means of bolts 6 screwed into said cylinder 52 . When the bolt 6 is used to fasten the armrest connection boss and the connector, a conical gasket 8 is placed between the connection boss 411, 421 and the cylinder 52, and the outer surface of the conical gasket 8 is conical. , corresponding to the openings of the through holes 413, 423 on the connecting bosses 411, 421, there is a tapered slope to form a bell mouth. When the bolt 6 is fully screwed into the female thread of the cylinder 52, the tapered gasket 8 The outer surface just coincides completely with the tapered slopes at the openings of the through holes 412, 422, so that the connection between the armrest and the chair back 1 and the seat can be fastened, and the crossbeam 41 and the support rod 42 of the armrest can be made The surface of the cylinder 52 surrounding the connecting piece 5 is free to rotate, so that the angle of the armrest 4 can be varied according to the needs of the seat back 1 .

In order to better explain the working principle and function of the armrest of the utility model linked with the office chair, the following will be combined with FIG. 2, and referring to FIG. 3 to FIG. Linkage process:

As shown in Figure 2, the office chair equipped with the armrest of the utility model includes a seat back 1, a seat seat 2 and a reclining mechanism 3 below the seat seat 2, and two connecting devices connected to the seat back 1 and the seat seat 2. Point armrest 4; the reclining mechanism 3 includes an adjustment part 31 and a support part 32, the seat 2 is fixed on the support part 32, and a steel sheet 11 is fixed on the back and bottom of the chair back 1, and the steel sheet 11 is bent at the bottom of the chair back and then connected to the supporting part 32 by means of the support steel part 9. The armrest 4 includes a crossbeam 41 and a support rod 42 that are rotatably connected to each other, and the other end of the crossbeam 41 is connected to the The side panels of the chair back 1 are rotatably connected, and the other end of the support rod 42 is rotatably connected with the side panels of the seat 2 . In the present utility model, the specific method for rotationally connecting the armrest 4 with the chair back 1 and the seat seat 2 is as follows: as shown in Figure 2 to Figure 5, the end of the beam 41 connected to the chair back 1 is formed with a connecting boss 411, the end of the support rod 42 connected to the seat 2 is formed with a connecting boss 421; and two connecting pieces 5 are also matched, and the connecting piece 5 includes a disc 51 and a circle vertically erected from the disc 51 cylinder 52, the inner wall of the cylinder 52 is cut with female threads; the cylinders 52 of the two connectors 5 respectively pass through the through holes 413, 423 on the connecting bosses 411, 421 and the chair back 1 and seat 2 The perforations on the side plates are screwed into the cylinder 52 by bolts 6 on the inner sides of the respective side plates and fixed. When the bolt 6 is used to fasten the armrest connection boss and the connector, a conical gasket 8 is placed between the connection boss 411, 421 and the cylinder 52, and the outer surface of the conical gasket 8 is conical. , corresponding to the openings of the through holes 413, 423 on the connecting bosses 411, 421, there is a tapered slope to form a bell mouth. When the bolt 6 is fully screwed into the female thread of the cylinder 52, the tapered gasket 8 The outer surface just coincides completely with the tapered slopes at the openings of the through holes 412, 422, so that the connection between the armrest and the chair back 1 and the seat can be fastened, and the crossbeam 41 and the support rod 42 of the armrest can be made The surface of the cylinder 52 around the connecting piece 5 is free to rotate, so that the angle of the armrest 4 can be changed according to the needs of the seat back 1, thereby realizing the linkage with the reclining mechanism 3 and the supporting steel part 9. The supporting steel part 9 is actually an accessory of the reclining mechanism 3, which can be reclined synchronously with the reclining mechanism 3, but the reclining angle is larger than that of the reclining mechanism 3, which belongs to the prior art. Its principle and structure will not be repeated here. Comparing Fig. 2 and Fig. 1 respectively, when the reclining mechanism 3 is opened, the office chair reclines as a whole, because the chair back 1 and the supporting steel part 9 are connected and fixed by means of the steel sheet 11, and the reclining angle of the supporting steel part 9 is related to the inclination angle. The reclining angle of the reclining mechanism 3 is different, which causes the reclining angles of the chair back 1 and the seat 2 to be different. See Figure 1A and 1B. Since the two ends of the armrest are fixed to the chair back and the seat seat, the office chair reclines forward. The included angle between the back of the chair and the seat seat after reclined is unchanged and is 71°, so that the sitting posture of the sitter cannot be stretched; the utility model designs the armrest 4 as a crossbeam 41 and a support rod 42 that are mutually rotatably connected. , and are respectively connected to the chair back 1 and the seat 2 in rotation, so that the requirement that the reclining angles of the chair back 1 and the seat 2 are different, as shown in Fig. 2A and Fig. The angle between the seats is larger than the angle between the back of the chair and the seat when the office chair is reclined. The reclined front is 71°, and the reclined rear is 76°, so that the sitting posture of the sitter can be stretched and feels comfortable.

As shown in Figures 2 to 6, two arc-shaped positioning grooves 412, 422 are provided on the two connecting bosses 411, 421 respectively, and two arc-shaped positioning slots are provided on the disk 51 of the corresponding connecting piece 5 respectively. The protrusion 53 is placed in the positioning groove and has a length shorter than that of the positioning groove. The chair back steel sheet 11 has a certain elasticity, and permanent deformation will occur if the force is too strong. When the armrest 4 was in the normal state and the office chair was not reclined, the lower limit of the two positioning protrusions 53 at the chair back 1 just touched the lower limit of the two positioning grooves 412 to ensure that the armrest 4 would not be under the heavy pressure of the human body or external force. Deformation occurs, so as to prevent the deformation of the chair back steel sheet 11, and the positioning protrusions 53 at the seat seat 2 respectively withstand the two ends of the two positioning grooves 422. When the reclining mechanism 3 is opened, the seat back 1 1. The seat 2 is reclined as a whole, and the armrest 4 is in a moving state. There is a gap and an angle difference between the positioning protrusion 53 at the seat back 1 and the positioning groove 412, so that the positioning protrusion 53 can slide in the positioning groove 412 , when the reclining angles of the reclining mechanism 3 and the supporting steel part 9 reach the limit, the upper limit of the positioning protrusion 53 at the seat back 1 just withstands the upper limit of the positioning groove 412, thereby assisting the seat back steel sheet 11 to bear the rear to prevent the permanent deformation of the back steel sheet 11 due to excessive receding force, and increase the safety and service life of the product; while the two positioning protrusions 53 at the seat 2 are relatively rotated to withstand the two positioning positions respectively. The other two ends of the groove 422 play a very good positioning role like this.

It is worth mentioning that Fig. 6 is only a sectional view of the combination of the connecting boss 421 at the end of the armrest, the connecting piece 5, the bolt 6 and the conical washer 8. After the armrest 4 is assembled and connected with the seat 2 and the seat back 1, the Between the connecting boss 421 or connecting boss 411 and the inner end surface of the bolt head of the bolt 6, there is a side plate of the seat 2 or the seat back 1. In FIG. 6 , the side plate of the seat 2 or the seat back 1 Not drawn.

Claims (5)

1. handrail (4) with office chair interlock, it is characterized in that: comprise the crossbeam (41) and the support bar (42) that are rotatably connected mutually, and, the other end of described crossbeam (41) is designed to do the flexible connection end that is rotatably connected with the office chair chair back (1) avris plate, and the other end of described support bar (42) is designed to do the flexible connection end that is rotatably connected with office chair seat support (2) avris plate.

2. the handrail (4) that links with office chair as claimed in claim 1, it is characterized in that: described crossbeam (41) is done the flexible connection end that is rotatably connected with the office chair chair back (1) avris plate and is and the integrated boss (411) that is connected of crossbeam (41), described support bar (42) be designed to do the flexible connection end that is rotatably connected and be and the integrated boss (421) that is connected of support bar (42) with office chair seat support (2) avris plate; Also supporting two connectors (5) that are provided with, this connector (5) comprise disk (51) and the vertical cylinder of holding up (52) from disk (51), and the cutting of this cylinder (52) inwall has negative thread.

3. the handrail (4) that links with office chair as claimed in claim 2 is characterized in that: be lined with taper pad (8) between described connection boss (411,421) and the cylinder (52).

4. as claim 2 or the 3 described handrails (4) that link with office chair, it is characterized in that: described two connect in the boss (411,421), at least one connects on the boss offers at least one arc positioning groove, (51) are provided with at least one arc positioning convex (53) on the disk of corresponding connector (5), this positioning convex (53) place in the described locating slot and length less than the length of locating slot.

5. the handrail (4) that links with office chair as claimed in claim 4, it is characterized in that: all offer the twice arc positioning groove on the described two connection boss (411,421), the disk (51) of corresponding connector (5) is provided with at least one arc positioning convex (53).

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