A method of quick installation of a sofa armrest

Abstract

The application provides a quick installation method of a sofa armrest, which comprises the following steps: firstly, fixing and installing a first connecting piece and a second connecting piece on a sofa frame and an armrest frame respectively; secondly, moving the armrest frame so that a locking pin on the first connecting piece enters an avoiding hole on the second connecting piece; thirdly, moving the armrest frame downward so that the locking pin is locked with a limiting groove, a locking buckle on the first connecting piece is locked with a buckle hole of the second connecting piece, and inclined pieces on both sides of the limiting groove are pried open by a main body of the locking pin and are pressed against a head of the locking pin, so that the armrest frame is tightly attached to the sofa frame; the installation method is not only simple and quick, but also locks the armrest frame and the sofa frame from the upper and lower direction, the left and right direction and the front and back direction, and has higher stability.

Description

Technical Field

[0001] This invention relates to the field of furniture, and in particular to a method for quickly installing sofa armrests. Background Technology

[0002] Sofas are a type of comfortable seating for relaxation in daily life. In addition to the basic seat and backrest, they also have single-piece upright armrests for aesthetic and overall appearance. Since the armrests of sofas are generally large and not conducive to packaging and transportation, manufacturers usually disassemble the sofa before packaging and shipping to reduce costs. The armrests are often packaged separately, and consumers need to install them themselves after receiving the goods.

[0003] Traditionally, armrests were installed using a plug-in method, where plugs were placed on the armrests and sockets were installed on the sofa frame. During installation, the armrests were moved from top to bottom to insert the plugs into the sockets. The problem with this method is that, because the socket slots are V-shaped and open from top to bottom, when the armrests bear heavy weight, such as when a person sits directly on the armrest, the force is transmitted to the plugs, which can easily cause the plugs to protrude from the socket. The socket slots are also V-shaped and open from top to bottom, which can deform the socket and cause the plugs to detach from the socket. Therefore, this traditional installation method results in an unstable connection, poor load-bearing capacity, and easy damage. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a quick installation method for sofa armrests. The steps are as follows: first, fix the first connecting piece and the second connecting piece to the sofa frame and the armrest frame respectively; then, move the armrest frame so that the locking pin on the first connecting piece enters the clearance hole on the second connecting piece; subsequently, move the armrest frame downwards so that the locking pin locks with the limiting groove, and the latch on the first connecting piece locks with the buckle hole on the second connecting piece. At the same time, the inclined pieces on both sides of the limiting groove are opened by the main body of the locking pin and press against the head of the locking pin, so that the armrest frame and the sofa frame are tightly fitted. This installation method is not only simple and quick, but also locks the armrest frame and the sofa frame in the vertical, horizontal, and front-back directions, resulting in stronger stability.

[0005] The technical solution of this invention is implemented as follows:

[0006] A quick installation method for sofa armrests, the steps are as follows:

[0007] S1: Fix the first connector to the sofa frame and fix the second connector to the armrest frame;

[0008] S2: Move the armrest frame up and down to align the clearance hole of the second connector with the locking pin on the first connector. Move the armrest again to bring the armrest frame closer to the sofa frame until the first connector and the second connector are close together and the locking pin enters the clearance hole.

[0009] S3: Move the armrest frame downwards so that the locking pin enters the limiting groove. The elastic inclined plates on both sides of the limiting groove are opened by the main body of the locking pin and push against the head of the locking pin, pushing the second connector against the first connector, so that the two press against each other, restricting the relative movement of the armrest frame and the sofa frame in the front-back direction and the left-right direction; at the same time, the buckle on the first connector abuts against the second connector, the second connector bends, and after the buckle enters the buckle hole on the second connector, the second connector returns to its deformation and restricts the relative movement of the armrest frame and the sofa frame in the up-down direction.

[0010] First, this installation method retains the simplicity and speed of the insert-type installation method, requiring only the movement of the armrest frame to install it onto the sofa frame. Second, compared to the insert-type method, this installation method features a more secure fit between the locking pin and the limiting groove, preventing deformation of the insert structure. While the locking pin and limiting groove engage, the angled piece ensures the armrest frame and sofa frame fit together horizontally, increasing lateral restraint. Simultaneously, the locking buckle and buckle hole further enhance vertical restraint, preventing the armrest frame and sofa frame from moving or separating in any direction, resulting in superior stability and safety.

[0011] Preferably, the second connector is moved towards the armrest frame, deforming it and disengaging the latch from the buckle hole. Then, the armrest frame is moved upwards to disengage the locking pin from the limiting groove. The sofa frame and armrest frame connected using this method cannot be directly disassembled; the latch and buckle hole provide a locking mechanism. However, disassembly can be achieved by moving the second connector to disengage the latch from the buckle hole.

[0012] Preferably, in step S1, the first connector is first welded to the longitudinal bar of the sofa frame, and then fixedly connected to the seat frame of the sofa frame by screws; welding positioning holes are opened on both the longitudinal bar and the first connector; the second connector is installed on a mounting rod, and fixing plates are provided at both ends of the mounting rod, and the fixing plates are fixedly connected to the armrest frame by screws.

[0013] Preferably, the upper end of the second connector is a flexible tab, and the buckle hole is located on the flexible tab. A transition section exists between the upper and lower parts of the flexible tab, bending upwards towards the first connector. This transition section gives the flexible tab an S-shaped form. Due to the shape of the flexible tab, during installation, the buckle will press against the flexible tab, causing it to deform. Once the buckle enters the buckle hole, the flexible tab returns to its original shape, preventing the buckle from loosening in the buckle hole. This restricts the vertical movement of the armrest frame and the sofa frame, and locks their installation, preventing separation.

[0014] Preferably, the transition section has a window to increase the elastic deformation capability. The window further increases the deformation capability of the elastic lever, making the assembly of the latch and buckle hole smoother during installation, easier to move the armrest frame, and easier to operate the elastic lever during disassembly.

[0015] Preferably, the two inclined plates are symmetrically arranged, and the distance between the two inclined plates is less than the width of the limiting groove; the locking pin includes a body and a head, with the head located on the side away from the first connector. The position of the head relative to the locking pin ensures that after the inclined plate reaches the head, the armrest frame naturally conforms to the sofa frame.

[0016] Preferably, the diameter of the main body is greater than the distance between the two inclined plates, and the diameter of the head is greater than the diameter of the main body. In step S3, when the locking pin enters the limiting groove, the inclined plates are opened by the main body and pushed against the head. The diameter of the main body must be greater than the distance between the inclined plates to open the inclined plates, and the diameter of the head must be greater than the diameter of the main body to allow the inclined plates to abut against it.

[0017] Preferably, the lower part of the inclined plate is gradually tapered from top to bottom towards the outer side of the limiting groove to form an inverted V-shaped opening. The V-shaped opening facilitates the main body to enter between the two inclined plates, making installation easier and smoother.

[0018] Preferably, the inclined plate is tilted toward the side away from the first connector.

[0019] The design starting point, concept, and beneficial effects of the present invention, which adopts the above technical solution, are as follows:

[0020] First, this installation method retains the simplicity and speed of the insert-type installation method, requiring only the movement of the armrest frame to install it onto the sofa frame. Second, compared to the insert-type method, this installation method features a more secure fit between the locking pin and the limiting groove, preventing deformation of the insert structure. While the locking pin and limiting groove engage, the angled piece ensures the armrest frame and sofa frame fit together horizontally, increasing lateral restraint. Simultaneously, the locking buckle and buckle hole further enhance vertical restraint, preventing the armrest frame and sofa frame from moving or separating in any direction, resulting in superior stability and safety. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the sofa in an embodiment of the present invention;

[0022] Figure 2 This is a side view of the sofa component and sofa frame during installation in an embodiment of the present invention;

[0023] Figure 3 This is a three-dimensional structural diagram of the first and second mounting structures in the sofa according to an embodiment of the present invention;

[0024] Figure 4 This is a three-dimensional structural diagram of the locking pin entering the clearance hole in an embodiment of the present invention;

[0025] Figure 5 This is a three-dimensional structural diagram of the elastic paddle in an embodiment of the present invention;

[0026] Figure 6 This is a three-dimensional structural diagram of the second connector in an embodiment of the present invention;

[0027] Figure 7 This is a three-dimensional structural diagram of the first connector in an embodiment of the present invention;

[0028] Figure 8 This is a flowchart illustrating the installation method of the present invention in an embodiment.

[0029] The attached figures are labeled as follows: sofa frame 1; mechanical extension device 101; seat frame 102; longitudinal bar 103; armrest frame 2; mounting rod 21; fixing plate 22; locking pin 3; main body 31; head 32; limiting groove 4; lock buckle 5; buckle hole 6; first connector 7; second connector 8; welding positioning hole 9; clearance hole 10; inclined plate 11; elastic lever 12; transition part 121; window 13. Detailed Implementation

[0030] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0032] In the description of this invention, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] The specific embodiments of the present invention are as follows:

[0034] like Figure 1 , 2 As shown in Figure 8, this invention provides a quick installation method for sofa armrests, the steps of which are as follows:

[0035] S1: Fix the first connector 7 to the sofa frame 1 and fix the second connector 8 to the armrest frame 2;

[0036] S2: Move the armrest frame 2 up and down, align the clearance hole 10 of the second connector 8 with the locking pin 3 on the first connector 7, and move the armrest again to bring the armrest frame 2 closer to the sofa frame 1 until the second connector 8 and the first connector 7 are close together and the locking pin 3 enters the clearance hole 10.

[0037] S3: Move the armrest frame 2 downwards so that the locking pin 3 enters the limiting groove 4. The inclined pieces 11 on both sides of the limiting groove 4 are opened by the main body of the locking pin 3 and push against the head 32 of the locking pin 3, pushing the second connecting piece 8 towards the first connecting piece 7, so that the two press against each other, restricting the relative movement of the armrest frame 2 and the sofa frame 1 in the front-back direction and the left-right direction; at the same time, the latch 5 on the first connecting piece 7 abuts against the second connecting piece 8, the second connecting piece 8 bends, and after the latch 5 enters the latch hole 6 on the second connecting piece 8, the second connecting piece 8 restores its deformation and restricts the relative movement of the armrest frame 2 and the sofa frame 1 in the up-down direction.

[0038] Step S1 is completed by the manufacturer:

[0039] The first connector 7 is first welded to the longitudinal rod 103 of the sofa frame 1, and then fixedly connected to the seat frame 102 of the sofa frame 1 with screws; both the longitudinal rod 103 and the first connector 7 have welding positioning holes 9. The longitudinal rod 103 is fixedly connected to the mechanical extension mechanism with screws. The second connector 8 is installed on the mounting rod 21, and the mounting rod 21 has fixing plates 22 at both ends, which are fixedly connected to the armrest frame 2 with screws.

[0040] When disassembling the armrest frame 2 and the sofa frame 1, move the elastic lever 12 towards the armrest frame 2. The elastic lever 12 will deform and cause the latch 5 to disengage from the buckle hole 6. Then move the armrest frame 2 upward to disengage the locking pin 3 from the limiting groove 4.

[0041] like Figure 1-3 As shown, this installation method is applied to a sofa, which includes a sofa frame 1 for sitting and leaning against. An armrest frame 2 is installed on the side of the sofa frame 1. The armrest frame 2 is installed on the sofa frame 1 through a first installation structure and a second installation structure. The first installation structure includes a locking pin 3 and a limiting groove 4. The locking pin 3 is located on one of the sofa frame 1 or the armrest frame 2, and the limiting groove 4 is located on the other of the sofa frame 1 or the armrest frame 2. The second installation structure includes a latch 5 and a latching hole 6. The latch 5 is located on one of the sofa frame 1 or the armrest frame 2, and the latching hole 6 is located on the other of the sofa frame 1 or the armrest frame 2. The locking pin 3 and the limiting groove 4 engage and restrict the relative movement of the armrest frame 2 and the sofa frame 1 in the left-right direction. At the same time as the locking pin 3 and the limiting groove 4 engage, the latch 5 and the latching hole 6 engage and restrict the relative movement of the armrest frame 2 and the sofa frame 1 in the up-down direction.

[0042] Compared to the insert-type installation structure, the installation operation is basically the same: the sofa parts are installed onto the sofa frame 1 from top to bottom, which is quick and convenient. In terms of the effect after installation, while preventing the armrest frame 2 from separating from the sofa frame 1 in the left and right directions, a second installation structure is added for upper and lower limit. Even if the armrest frame 2 is subjected to greater gravity, the second installation structure can still provide rigid support to the armrest frame 2, resulting in stronger load-bearing capacity, better stability and safety, and a longer service life.

[0043] A first connector 7 and a second connector 8 are provided between the armrest frame 2 and the sofa frame 1. The first connector 7 is fixedly mounted on the sofa frame 1, and the second connector 8 is fixedly mounted on the armrest frame 2. The sofa frame 1 includes a mechanical extension device 101, a seat frame 102, and a longitudinal rod 103 located between the seat frame 102 and the mechanical extension device 101. The seat frame 102 is located above the mechanical extension device 101. The first connector 7 is first welded to the longitudinal rod 103 of the sofa frame 1, and then fixedly connected to the seat frame 102 of the sofa frame 1 by screws. Welding positioning holes 9 are provided on both the longitudinal rod 103 and the first connector 7 to facilitate welding. The longitudinal rod 103 is fixedly connected to the mechanical extension device 101 by screws. The frame 2 is equipped with a mounting rod 21, and the mounting rod 21 has fixing plates 22 at both ends. The fixing plates 22 are fixedly connected to the armrest frame 2 by screws. The second connecting piece 8 is fixedly installed on the mounting rod 21. The locking buckle 5 and locking pin 3 are set on the first connecting piece 7 and protrude from the first connecting piece 7 towards the second connecting piece 8. The buckle hole 6 and limiting groove 4 are set on the second connecting piece 8. The first mounting structure and the second mounting structure are set on the first connecting piece 7 and the second connecting piece 8. There is no need to specially change the original structure of the sofa frame 1 and the armrest frame 2. It is only necessary to install the first connecting piece 7 and the second connecting piece 8 onto the sofa frame 1 and the armrest frame 2. It has strong adaptability and is simpler and more convenient for manufacturers.

[0044] like Figure 7 As shown, the first connector 7 is vertically mounted on the sofa frame 1. There are two locking pins 3, which are distributed vertically on the first connector 7 and protrude from the first connector 7 toward the second connector 8. The locking pin 3 includes a body 31 and a head 32. The head 32 is farther away from the first connector 7 than the body 31, and the diameter of the head 32 is larger than the diameter of the body 31. The latch 5 is located at the upper end of the first connector 7 and is integrally formed with the first connector 7. The latch 5 is hook-shaped and bends toward the second connector 8. The cooperation of multiple locking pins 3 with the limiting groove 4 can increase the stability of the connection between the armrest frame 2 and the sofa frame 1.

[0045] like Figure 4As shown, the second connector 8 is vertically mounted on the handrail frame 2. The second connector 8 has two limiting grooves 4, which are distributed vertically and are separated from each other. The lower limiting groove 4 has a downward opening for the locking pin 3 to enter, and the upper limiting groove 4 has a clearance hole 10 communicating with it. The diameter of the clearance hole 10 is larger than the width of the limiting groove 4 and is used to avoid the locking pin 3, so that the locking pin 3 can enter the limiting groove 4 without an opening. When installing the handrail frame 2, the locking pin 3 needs to enter the clearance hole 10 first, so that the locking pin 3 in different positions can smoothly enter the limiting groove 4 during installation.

[0046] like Figure 5 , 6 As shown, a wedge 11 is provided on each side of the limiting groove 4. The two wedges 11 are symmetrically arranged, and the distance between the two wedges 11 is less than the width of the limiting groove 4. The wedges 11 are slightly raised towards the side away from the first connector 7. When the locking pin 3 enters the limiting groove 4, the wedges 11 are opened by the main body 31 and pushed against the head 32. After the armrest frame 2 and the sofa frame 1 are installed, the main body 31 is located in the limiting groove 4, and the head 32 protrudes from the limiting groove 4. The distance between the wedges 11 is less than the width of the limiting groove 4. The diameter is smaller than that of the main body 31, so the main body 31 can open the inclined plate 11, deform it, and push it against the head 32. After the head 32 is tightened, the first connector 7 and the second connector 8 are pressed together, that is, the armrest frame 2 and the sofa frame 1 are pressed together, realizing the function of restricting movement in the left and right directions; the lower part of the inclined plate 11 is gradually cut off from top to bottom towards the outside of the limiting groove 4 to form an inverted V-shaped opening; the V-shaped opening facilitates the main body 31 to enter between the two inclined plates 11, making the installation easier and smoother.

[0047] like Figure 6 As shown, the upper end of the second connector 8 is a flexible lever 12 fixedly connected to it. The buckle hole 6 is provided on the flexible lever 12. The thickness of the flexible lever 12 is less than the thickness of the second connector 8. There is a transition part 121 between the upper and lower parts of the flexible lever 12. The transition part 121 bends from bottom to top near the first connector 7. The transition part 121 makes the shape of the flexible lever 12 similar to an S-shape. Due to the shape of the flexible lever 12, during installation, the buckle 5 will push against the flexible lever 12, causing it to deform. When the buckle 5 enters the buckle hole 6, the flexible lever 12 returns to its original shape, so that the buckle 5 will not loosen in the buckle hole 6, thus restricting the movement of the armrest frame 2 and the sofa frame 1 in the vertical direction. A window 13 is provided on the transition part 121 to increase the elastic deformation capability. The presence of the window 13 can increase the deformation capability of the flexible lever 12, making the fit between the buckle 5 and the buckle hole 6 smoother during installation and easier to move the lever during disassembly.

Claims

1. A method of quick installation of a sofa arm, characterized in that, The steps are: S1: fixing and installing the first connecting piece on the sofa frame and fixing and installing the second connecting piece on the armrest frame; S2: moving the armrest frame up and down, aligning the escape hole of the second connecting piece with the locking pin on the first connecting piece, moving the armrest frame again to make the armrest frame close to the sofa frame until the first connecting piece and the second connecting piece abut and the locking pin enters the escape hole; S3: the second connecting piece is provided with a limiting groove, two symmetrical and elastic inclined plates are arranged on both sides of the limiting groove, the inclined plates are inclined and raised away from the first connecting piece, the two inclined plates are symmetrically arranged and the distance between the two inclined plates is less than the groove width of the limiting groove, the lower part of the inclined plate is gradually reduced from top to bottom to the outside of the limiting groove to form a reverse V-shaped opening; the locking pin includes a main body and a head, the head is located away from the first connecting piece, the diameter of the main body is greater than the distance between the two inclined plates, and the diameter of the head is greater than the diameter of the main body; moving the armrest frame downward, the main body enters between the two inclined plates from the reverse V-shaped opening, the main body spreads the inclined plates to make the inclined plates deform and top the head, the extrusion between the head and the inclined plates pushes the second connecting piece to the first connecting piece, so that the two abut and limit the relative movement of the armrest frame and the sofa frame in the front-back direction and the left-right direction; at the same time, the lock catch on the first connecting piece abuts against the second connecting piece, the second connecting piece bends, and after the lock catch enters the buckle hole on the second connecting piece, the second connecting piece restores the deformation and limits the relative movement of the armrest frame and the sofa frame in the up-down direction.

2. The method of quick installation of a sofa armrest according to claim 1, characterized in that: Push the second connecting piece towards the armrest frame direction, the second connecting piece deforms and makes the lock catch and the buckle hole separate, and then move the armrest frame upward to make the locking pin and the limiting groove separate.

3. The method of quick installation of a sofa armrest according to claim 1, characterized in that: In step S1, the first connecting piece is first welded on the longitudinal rod of the sofa frame, and then fixedly connected with the seat frame of the sofa frame through screws; the longitudinal rod and the first connecting piece are both provided with welding positioning holes; the second connecting piece is installed on an installation rod, and the installation rod is provided with fixed plates at both ends, and the fixed plates are fixedly connected with the armrest frame through screws.

4. The method of quick installation of a sofa armrest according to claim 1, characterized in that: The upper end of the second connecting piece is an elastic tab, and the buckle hole is arranged on the elastic tab; the elastic tab has a transition part between the upper part and the lower part, and the transition part is curved from bottom to top towards the connecting seat.

5. The method of quick installation of a sofa armrest according to claim 4, characterized in that: A window for increasing the elastic deformation capacity is arranged on the transition part.

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