Method for manufacturing office chair seat

Abstract

The present invention discloses a method for manufacturing an office chair seat, comprising the following steps: the first step: selecting a U-shaped frame (1), the second step: manufacturing a soft filling block (9) having the shape of the seat, the third step: selecting a cover matching the shape of the seat, the fourth step: turning the positioning sleeve (14) outward, and the fifth step: wrapping the positioning sleeve (14) outside the filling block (9). The manufacturing method makes the cover better in wrapping, increases the positioning to avoid displacement, makes the cover more positioned with the frame, and avoids the armrest mounting frame from protruding.

Description

Technical Field

[0001] The invention relates to the technical field of office furniture, in particular to a method for manufacturing an office chair seat. Background Art

[0002] As one of the most commonly used office furniture, office chairs have a variety of styles. At present, there is an office chair with padding inside and leather or imitation leather material wrapped outside. The base generally adopts a gas spring that can be raised and lowered and can be rotated at any angle to facilitate angle adjustment. Armrests are provided on both sides of the seat. The backrest generally adopts a structure that can adjust the tilt angle, and there is an integrated headrest on the top of the backrest. At present, in the production of office chairs with this structure, the backrest, seat, armrest and base are processed separately and finally assembled into one. Among them, there are the following disadvantages in the production process of the seat: 1. The wrapping of the outer cover and the internal padding is poor. In long-term use, there is a greater probability that the outer cover will shift. 2. The structure of the internal frame is simple, and there is not much correlation between the positioning structure of the outer cover and the internal frame. 3. The armrest mounting frame protrudes from the side of the seat, which reduces the integrity of the seat. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a method for manufacturing an office chair seat which can improve the wrapping property of the coat, increase the positioning property to avoid displacement, make more positioning of the coat and the frame, and avoid the protrusion of the armrest mounting frame.

[0004] The technical solution of the present invention is to provide a method for manufacturing an office chair seat having the following structural steps, comprising the following steps:

[0005] Step 1: Select a U-shaped frame, and install the first crossbeam, the second crossbeam and the third crossbeam in the middle, the two ends of the first crossbeam, the second crossbeam and the third crossbeam are respectively welded and fixed to the side bars on both sides of the frame, the top edge of the frame is located in the front of the seat, and the two tails of the frame are respectively provided with positioning plates; the top of the positioning plate extends out of the top of the frame, and the outer side also extends out of the side wall of the frame; a first support rod in the X-axis direction and two second support rods in the Y-axis direction are provided near the front of the frame, and a support plate is provided on the second crossbeam and the third crossbeam;

[0006] Step 2: Make a soft filling block with the shape of a seat, the bottom of the filling block is provided with a groove for the frame to be embedded, and notches are provided on both sides of the filling block, and the positioning plates are respectively embedded in the notches on the same side, and the frame does not extend out of the filling block; the two sides of the top surface of the filling block protrude upward near the edge to form a covering part, and the connection between the two sides of the top surface of the filling block and the covering part is provided with positioning grooves;

[0007] Step 3: Select a jacket that matches the shape of the seat, and provide two first positioning sleeves extending along the length direction on the inner side of the top surface of the jacket, and provide an opening on the bottom surface of the jacket, and provide second positioning sleeves on both sides of the opening in the length direction, and the first positioning sleeve is located at the boundary between the covering portion and the top surface of the filling block; provide a third positioning sleeve on the back of the jacket; and provide a fourth positioning sleeve on the front of the jacket;

[0008] Step 4: Turn the first positioning sleeves outward and insert the first rigid positioning strip into each first positioning sleeve; align the top surface of the positioning sleeves with the top surface of the filling block, and then position the first positioning sleeves and the first rigid positioning strip in the positioning groove of the filling block through a plurality of positioning rings; insert the second rigid positioning strip into the end of the second positioning sleeve close to the front of the seat, and the length of the second rigid positioning strip is shorter than the length of the second positioning sleeve;

[0009] Step 5: Wrap the first positioning sleeve around the filling block and install it into the frame at the same time, place a piece of covering cloth at the opening of the sleeve, and then insert the third rigid positioning strip into the end of the second positioning sleeve near the tail. At this time, the two second positioning sleeves and the inner third rigid positioning strip are positioned on the side rods on both sides of the frame through a number of positioning rings; the fourth rigid positioning strip is also inserted into the third positioning sleeve, and the third positioning sleeve and the inner fourth rigid positioning strip are positioned on the first crossbeam through a number of positioning rings; the fifth rigid positioning strip is also inserted into the fourth positioning sleeve, and the fourth positioning sleeve and the inner fifth rigid positioning strip are positioned on the first support rod through a number of positioning rings.

[0010] The sum of the lengths of the second rigid positioning strip and the third rigid positioning strip is consistent with the second positioning sleeve.

[0011] The outer diameters of the outer ends of all the rigid positioning strips are larger than the body, so that the rigid positioning strips are tightly fitted and positioned in the corresponding positioning sleeves.

[0012] The outer sleeve covers the gaps on both sides of the filling block.

[0013] The positioning plate is provided with a plurality of threaded holes, and a bracket for mounting an armrest on the seat is connected to the threaded holes of the positioning plate by passing bolts through the outer sleeve.

[0014] After adopting the above steps, the technology of the present invention has the following significant progress and outstanding substantial features: 1. Add a number of hard positioning strips at the top and bottom of the seat, so that the hard positioning strips are fixed to the internal filling material, so that the outer cover has better wrapping, and the positioning is increased to avoid displacement. 2. Fix multiple positioning sleeves with hard positioning strips to the four sides of the frame, which greatly increases the fixing effect of the two. 3. Notches are provided on both sides of the filling block, and the positioning plates are respectively embedded in the notches on the same side. The frame does not extend out of the filling block, so that the armrest mounting frame does not protrude, making the side look more integrated. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the frame of the office chair seat of the present invention.

[0016] Figure 2 The figure is a schematic diagram of the split body of the office chair seat of the present invention.

[0017] Figure 3 The figure is a schematic diagram of the outer cover of the seat of an office chair of the present invention.

[0018] Figure 4 The figure is a schematic diagram of assembling the frame and filler of the seat of the office chair of the present invention.

[0019] As shown in the figure: 1. frame, 2. first crossbeam, 3. second crossbeam, 4. third crossbeam, 5. positioning plate, 6. first support rod, 7. second support rod, 8. support plate, 9. filling block, 10. groove, 11. notch, 12. covering part, 13. positioning groove, 14. first positioning sleeve. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] like Figure 1-4 As shown, the method for manufacturing the seat of an office chair of the present invention comprises the following steps:

[0022] Step 1: If Figure 1 As shown, a U-shaped frame 1 is selected, and a first crossbeam 2, a second crossbeam 3 and a third crossbeam 4 are installed in the middle, and the two ends of the first crossbeam 2, the second crossbeam 3 and the third crossbeam 4 are respectively welded and fixed to the side bars on both sides of the frame 1. The first crossbeam 2 is fixed at the opening of the U-shaped frame 1, and the two form a ring after being fixed. The second crossbeam 3 and the third crossbeam 4 are fixed in the middle of the frame 1.

[0023] The top edge of the frame 1 is located in front of the seat, and positioning plates 5 are respectively provided at the tails of both sides of the frame 1; the top of the positioning plate 5 extends out of the top of the frame 1, and the outer side also extends out of the side wall of the frame 1; a first support rod 6 in the X-axis direction and two second support rods 7 in the Y-axis direction are provided near the front of the frame 1. One support rod 6 and two second support rods 7 increase the strength of the seat and also provide positioning for the outer cover. A support plate 8 is provided on the second crossbeam 3 and the third crossbeam 4; the support plate 8 is used to provide support.

[0024] Step 2: If Figure 2 and Figure 3As shown, a soft filling block 9 with a seat shape is made. The filling block 9 is made of sponge material. A groove 10 is provided at the bottom of the filling block 9 for the frame 1 to be embedded. During installation, the entire frame 1 is embedded in the groove 10, so that when the outer cover wraps the filling block 9, it avoids the connection with the frame 1.

[0025] There are notches 11 on both sides of the filling block 9, and the positioning plates 5 are respectively embedded in the notches 11 on the same side, and the frame 1 does not extend out of the filling block 9; the positioning plate 5 is used to install the angle adjustment device and the connection hinge with the chair back. There are multiple threaded holes on the positioning plate 5, and the bracket for installing the armrest on the seat is connected to the threaded holes of the positioning plate 5 through bolts passing through the outer sleeve. The two sides of the top surface of the filling block 9 protrude upward near the edge to form a covering part 12, and the covering part 12 protrudes upward at an angle to support the buttocks of the human body, which is more ergonomic. There are positioning grooves 13 at the connection between the two sides of the top surface of the filling block 9 and the covering part 12. One end of the positioning groove 13 is located on the front of the seat, and the other end is located on the back of the seat. The outer sleeve covers the notches 11 on both sides of the filling block 9.

[0026] Step 3: Choose a coat that matches the shape of the seat. Two first positioning sleeves 14 extending along the length direction are provided on the inner side of the top surface of the coat. The first positioning sleeve 14 is made of soft fabric and has a channel inside. There is an opening on the bottom surface of the coat. The four sides of the opening can be wrapped around the bottom of the filler, and positioning sleeves are provided on the four sides. The four side positioning sleeves in this area are formed by edge flanging and sewing. Second positioning sleeves are provided on both sides of the opening in the length direction. The first positioning sleeve 14 is located on the boundary between the covering part 12 and the top surface of the filling block 9; a third positioning sleeve is provided on the back of the coat; and a fourth positioning sleeve is provided on the front of the coat;

[0027] Step 4: Turn the first positioning sleeve 14 inside out and insert the first rigid positioning strip into each first positioning sleeve 14; align the top surface of the first positioning sleeve 14 with the top surface of the filling block 9, and then position the first positioning sleeve 14 and the first rigid positioning strip in the positioning groove 13 of the filling block 9 through a plurality of positioning rings; insert the second rigid positioning strip into the end of the second positioning sleeve close to the front of the seat, and the length of the second rigid positioning strip is shorter than that of the second positioning sleeve; the sum of the lengths of the second rigid positioning strip and the third rigid positioning strip is consistent with that of the second positioning sleeve.

[0028] Step 5: Wrap the first positioning sleeve 14 around the filling block 9, install it into the frame at the same time, and place a piece of covering cloth at the opening of the outer sleeve, and then insert the third rigid positioning strip into the end of the second positioning sleeve near the tail. At this time, the two second positioning sleeves and the internal third rigid positioning strip are respectively positioned on the side rods on both sides of the frame 1 through a number of positioning rings; the fourth rigid positioning strip is also inserted into the third positioning sleeve, and the third positioning sleeve and the internal fourth rigid positioning strip are positioned on the first crossbeam 2 through a number of positioning rings; the fifth rigid positioning strip is also inserted into the fourth positioning sleeve, and the fourth positioning sleeve and the internal fifth rigid positioning strip are positioned on the first support rod 6 through a number of positioning rings.

[0029] The outer diameters of the outer ends of all the rigid positioning strips are larger than the body, so that the rigid positioning strips are tightly fitted and positioned in the corresponding positioning sleeves.

Claims

1. A method for manufacturing an office chair seat, comprising the following steps: The first step: select a U-shaped frame (1), and install a first crossbeam (2), a second crossbeam (3) and a third crossbeam (4) in the middle, the two ends of the first crossbeam (2), the second crossbeam (3) and the third crossbeam (4) are respectively welded and fixed to the side bars on both sides of the frame (1), the top edge of the frame (1) is located on the front side of the seat, and the two tails of the frame (1) are respectively provided with positioning plates (5); the top of the positioning plate (5) extends out of the top of the frame (1), and the outer side also extends out of the side wall of the frame (1); a first support rod (6) in the X-axis direction and two second support rods (7) in the Y-axis direction are provided near the front side of the frame (1), and a support plate (8) is provided on the second crossbeam (3) and the third crossbeam (4); Step 2: A soft filling block (9) having the shape of a seat is produced. The bottom of the filling block (9) is provided with a groove (10) for the frame (1) to be embedded. Notches (11) are provided on both sides of the filling block (9). Each positioning plate (5) is respectively embedded in the notches (11) on the same side. The frame (1) does not extend out of the filling block (9). Both sides of the top surface of the filling block (9) protrude upward near the edge to form a covering portion (12). Positioning grooves (13) are provided at the connection between the two sides of the top surface of the filling block (9) and the covering portion (12). Step 3: Select a jacket that matches the shape of the seat, and provide two first positioning sleeves (14) extending along the length direction on the inner side of the top surface of the jacket, and provide an opening on the bottom surface of the jacket, and provide second positioning sleeves on both sides of the opening in the length direction, wherein the first positioning sleeve (14) is located at the boundary between the covering portion (12) and the top surface of the filling block (9); a third positioning sleeve is provided on the back of the jacket; and a fourth positioning sleeve is provided on the front of the jacket; Step 4: Turn the first positioning sleeve (14) inside out, and insert a first rigid positioning strip into each first positioning sleeve (14); align the top surface of the first positioning sleeve (14) with the top surface of the filling block (9), and then position the first positioning sleeve (14) and the first rigid positioning strip in the positioning groove (13) of the filling block (9) through a plurality of positioning rings; insert a second rigid positioning strip into the end of the second positioning sleeve close to the front of the seat, wherein the length of the second rigid positioning strip is shorter than the length of the second positioning sleeve; Step 5: Wrap the first positioning sleeve (14) around the filling block (9) and install it into the frame at the same time, place a piece of shielding cloth at the opening of the sleeve, and then insert the third rigid positioning strip into the end of the second positioning sleeve near the tail. At this time, the two second positioning sleeves and the inner third rigid positioning strip are positioned on the side rods on both sides of the frame (1) through a plurality of positioning rings; the fourth rigid positioning strip is also inserted into the third positioning sleeve, and the third positioning sleeve and the inner fourth rigid positioning strip are positioned on the first crossbeam (2) through a plurality of positioning rings; the fifth rigid positioning strip is also inserted into the fourth positioning sleeve, and the fourth positioning sleeve and the inner fifth rigid positioning strip are positioned on the first support rod (6) through a plurality of positioning rings.

2. The method for manufacturing an office chair seat according to claim 1, characterized in that: The sum of the lengths of the second rigid positioning strip and the third rigid positioning strip is consistent with the second positioning sleeve.

3. The method for manufacturing an office chair seat according to claim 1, characterized in that: The outer diameters of the outer ends of all the rigid positioning strips are larger than the body, so that the rigid positioning strips are tightly fitted and positioned in the corresponding positioning sleeves.

4. The method for manufacturing an office chair seat according to claim 1, characterized in that: The outer sleeve covers the notches (11) on both sides of the filling block (9).

5. The method for manufacturing an office chair seat according to claim 1, characterized in that: The positioning plate (5) is provided with a plurality of threaded holes, and a bracket for mounting an armrest on the seat is connected to the threaded holes of the positioning plate (5) by means of bolts passing through an outer sleeve.

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