Sofa backrest armrest rotating mechanism

Abstract

The utility model discloses a sofa backrest armrest rotating mechanism, and relates to the technical field of sofa backrest armrests, the sofa backrest armrest rotating mechanism comprises a sofa seat and a rotating mechanism, the rotating mechanism is arranged above the sofa seat, through the arrangement of the rotating mechanism, a base outer frame is installed on the sofa seat, and then a lower fixing block is installed in the base outer frame; the rotating shaft is limited and fixed through the limiting sleeve, the rotating shaft is prevented from shaking during rotation, meanwhile, the rotating angle of the rotating shaft is limited, the stability of the backrest frame after adjustment is improved, meanwhile, better supporting force is provided for the backrest frame through inclined arrangement of the limiting sleeve, and when the rotating shaft rotates, the rotating shaft can rotate more stably; the positioning pin is blocked through the upper fixing block, the limiting effect is improved, meanwhile, the contact face of the positioning pin and the upper fixing block is increased, the bearing capacity of the backrest frame is improved, and meanwhile the backrest frame is conveniently installed and replaced by connecting the connecting block and the rotating shaft in an inserted mode.

Description

Technical Field

[0001] The utility model relates to the technical field of lamp panel installation, in particular to a sofa backrest armrest rotation mechanism. Background Art

[0002] A sofa mainly includes a sofa armrest and a sofa body. The sofa body mainly includes a seat part standing under the floor and a backrest part arranged at the rear of the seat part. The sofa armrest can provide cushioning for the user's hands. When the user needs to lie down and sleep under the seat part of the sofa, the sofa armrest will cause obstacles to the user lying down and sleeping under the seat part of the sofa, so a sofa backrest armrest rotation mechanism is needed.

[0003] After searching, the patent number "CN212345958U" mentioned "an armrest rotating mechanism, including a first rotating frame, a second rotating frame, a locking member, a first elastic member and a lock releasing operating member linked to the locking member. The first rotating frame and the second rotating frame are pivotally connected by a pivot structure, the first rotating frame is mounted on the sofa armrest, and the second rotating frame is mounted on the sofa body; the locking member is movably arranged on one of the first rotating frame and the second rotating frame, and the other of the first rotating frame and the second rotating frame is provided with at least a first matching lock portion and a second matching lock portion. The locking part can be selectively locked with the first locking part or the second locking part to block the relative rotation between the first rotating frame and the second rotating frame; the first elastic part is arranged between the locking part and the first rotating frame or the second rotating frame where the locking part is located, and the first elastic part always has the tendency to drive the locking part to move to lock with the first locking part or the second locking part, so as to flexibly make the sofa armrest stand up or flatten relative to the sofa body. The structure of this mechanism is complex and has many parts. The overall assembly steps are cumbersome and it is easy to be damaged after long-term use.

[0004] To this end, we provide a sofa backrest armrest rotation mechanism to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a sofa backrest armrest rotation mechanism to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solutions: a sofa backrest armrest rotation mechanism, comprising a sofa seat and a rotation mechanism, wherein the rotation mechanism is arranged above the sofa seat;

[0007] The rotating mechanism comprises a base outer frame, a lower fixed block, a middle fixed block, a limiting sleeve, a rotating shaft, an upper fixed block, a positioning pin, a connecting block, a backrest frame, a positioning installation groove and a positioning block. The top of the sofa seat is equipped with the base outer frame, the middle fixed block is arranged on the upper inner side of the base outer frame, the limiting sleeve is arranged on the inner side of the middle fixed block, the rotating shaft is arranged on the inner side of the limiting sleeve, and the backrest frame is arranged above the rotating shaft.

[0008] Preferably, the base outer frame is connected to the sofa seat by screws, and a lower fixing block is installed at the inner bottom end of the base outer frame, and the lower fixing block is arranged obliquely.

[0009] Preferably, the middle fixing block is connected to the outer frame of the base by screws, the inner diameter of the limiting sleeve is the same as the outer diameter of the rotating shaft, and the limiting sleeve is tightly fitted to the rotating shaft.

[0010] Preferably, the bottom end of the limiting sleeve is sleeved with the lower fixing block, and the limiting sleeve and the lower fixing block are arranged at the same inclination.

[0011] Preferably, the top end of the middle fixing block is screwed to an upper fixing block, the inner side of the upper fixing block is fitted and sleeved with the rotating shaft, and a positioning pin is provided on the outer side of the rotating shaft.

[0012] Preferably, the top slot of the rotating shaft is connected to a connecting block, and the top of the connecting block is fixedly connected to a backrest frame.

[0013] Preferably, a positioning installation groove is provided on the surface of the upper fixing block, and a positioning block is connected to the inner groove of the positioning installation groove.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. Through the setting of the rotating mechanism, the outer frame of the base is installed on the sofa seat, and then the lower fixed block is installed into the outer frame of the base to provide stable support for the whole. The rotating shaft is limited and fixed by the limiting sleeve to prevent the rotating shaft from shaking during rotation and limit the rotation angle of the rotating shaft, thereby improving the stability of the backrest frame after adjustment. At the same time, the inclined setting of the limiting sleeve provides better support for the backrest frame. When the rotating shaft rotates, the positioning pin is blocked by the upper fixed block to improve the limiting effect, increase the contact surface between the positioning pin and the upper fixed block, and improve the bearing capacity of the backrest frame. At the same time, by plugging the connecting block with the rotating shaft, the backrest frame is easy to install and replace;

[0016] 2. By setting the positioning block and installing the positioning block into the positioning installation groove, the limiting angle of the rotating shaft is changed, so that the rotating angle of the backrest frame can be adjusted according to different installation positions of the backrest frame, thereby improving the flexibility of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall appearance structure proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the matching structure of the base outer frame, the middle fixing block and the upper fixing block proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of the matching structure of the base outer frame, the lower fixing block and the limiting sleeve proposed in the utility model;

[0020] Figure 4 This is a schematic diagram of the overall explosion structure proposed by the utility model.

[0021] In the figure: 1, sofa seat; 2, rotating mechanism; 201, base outer frame; 202, lower fixing block; 203, middle fixing block; 204, limiting sleeve; 205, rotating shaft; 206, upper fixing block; 207, positioning pin; 208, connecting block; 209, backrest frame; 210, positioning installation groove; 211, positioning block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 As shown, a sofa backrest armrest rotating mechanism comprises a sofa seat 1 and a rotating mechanism 2, wherein the rotating mechanism 2 is arranged above the sofa seat 1;

[0024] The rotating mechanism 2 includes a base outer frame 201, a lower fixed block 202, a middle fixed block 203, a limiting sleeve 204, a rotating shaft 205, an upper fixed block 206, a positioning pin 207, a connecting block 208, a backrest frame 209, a positioning installation groove 210 and a positioning block 211. The top of the sofa seat 1 is installed with the base outer frame 201, the middle fixed block 203 is arranged on the inner side and upper part of the base outer frame 201, the limiting sleeve 204 is installed on the inner side of the middle fixed block 203, the rotating shaft 205 is installed on the inner side of the limiting sleeve 204, and the backrest frame 209 is arranged above the rotating shaft 205.

[0025] Furthermore, the base outer frame 201 is connected to the sofa seat 1 by screws, and a lower fixing block 202 is installed at the inner bottom end of the base outer frame 201. The lower fixing block 202 is tilted. By installing the base outer frame 201 on the sofa seat 1 and then installing the lower fixing block 202 into the base outer frame 201, stable support is provided for the whole.

[0026] Furthermore, the middle fixed block 203 is connected to the outer frame 201 of the base by screws, the inner diameter of the limiting sleeve 204 is the same as the outer diameter of the rotating shaft 205, the limiting sleeve 204 and the rotating shaft 205 fit tightly together, and the rotating shaft 205 is limited and fixed by the limiting sleeve 204 to prevent the rotating shaft 205 from shaking during rotation and limit the rotation angle of the rotating shaft 205, thereby improving the stability of the backrest frame 209 after adjustment.

[0027] Furthermore, the bottom end of the limiting sleeve 204 is sleeved with the lower fixing block 202 , and the limiting sleeve 204 and the lower fixing block 202 are arranged at the same inclination. The inclined arrangement of the limiting sleeve 204 provides better support for the backrest frame 209 .

[0028] Furthermore, the top end of the middle fixed block 203 is screwed to an upper fixed block 206, the inner side of the upper fixed block 206 is fitted and sleeved with the rotating shaft 205, and a positioning pin 207 is provided on the outer side of the rotating shaft 205. When the rotating shaft 205 rotates, the positioning pin 207 is blocked by the upper fixed block 206, thereby improving the limiting effect and increasing the contact area between the positioning pin 207 and the upper fixed block 206, thereby improving the bearing capacity of the backrest frame 209.

[0029] Furthermore, the top slot of the rotating shaft 205 is connected to a connecting block 208, and the top of the connecting block 208 is fixedly connected to a backrest frame 209. By plugging the connecting block 208 into the rotating shaft 205, the backrest frame 209 can be easily installed and replaced, thereby improving the convenience of installing the backrest frame 209.

[0030] Furthermore, a positioning installation groove 210 is opened on the surface of the upper fixed block 206, and the inner slot of the positioning installation groove 210 is connected to a positioning block 211. By installing the positioning block 211 into the positioning installation groove 210, the limiting angle of the rotating shaft 205 is changed, which makes it easy to adjust the rotation angle of the backrest frame 209 according to the different installation positions of the backrest frame 209, thereby improving the flexibility of use.

[0031] Working principle: When in use, the first step is to first install the base outer frame 201 on the sofa seat 1, and then install the lower fixing block 202 into the base outer frame 201 to provide stable support for the whole. The second step is to limit and fix the rotating shaft 205 through the limiting sleeve 204 to prevent the rotating shaft 205 from shaking when rotating and limit the rotation angle of the rotating shaft 205 to improve the stability of the backrest frame 209 after adjustment. At the same time, the inclined setting of the limiting sleeve 204 provides better support for the backrest frame 209. The third step is to use the upper fixing block 206 when the rotating shaft 205 rotates. The positioning pin 207 is blocked to improve the limiting effect, and the contact surface between the positioning pin 207 and the upper fixing block 206 is increased to improve the bearing capacity of the backrest frame 209. At the same time, by plugging the connecting block 208 with the rotating shaft 205, it is convenient to install and replace the backrest frame 209. In the fourth step, by installing the positioning block 211 into the positioning installation groove 210, the limiting angle of the rotating shaft 205 is changed, which is convenient to adjust the rotation angle of the backrest frame 209 according to the different installation positions of the backrest frame 209, thereby improving the flexibility of use, thereby completing the use of a sofa backrest armrest rotation mechanism.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sofa backrest armrest rotation mechanism, comprising a sofa seat (1) and a rotation mechanism (2), characterized in that: A rotating mechanism (2) is arranged above the sofa seat (1); The rotating mechanism (2) comprises a base outer frame (201), a lower fixed block (202), a middle fixed block (203), a limiting sleeve (204), a rotating shaft (205), an upper fixed block (206), a positioning pin (207), a connecting block (208), a backrest frame (209), a positioning installation groove (210) and a positioning block (211); the top of the sofa seat (1) is provided with the base outer frame (201); the middle fixed block (203) is provided above the inner side of the base outer frame (201); the limiting sleeve (204) is provided inside the middle fixed block (203); the rotating shaft (205) is provided inside the limiting sleeve (204); the rotating shaft (205) is provided above the rotating shaft (205); and the backrest frame (209) is provided above the rotating shaft (205).

2. A sofa backrest armrest rotating mechanism according to claim 1, characterized in that: The base outer frame (201) and the sofa seat (1) are connected by screws, and a lower fixing block (202) is installed at the inner bottom end of the base outer frame (201), and the lower fixing block (202) is arranged in an inclined manner.

3. The sofa backrest armrest rotating mechanism according to claim 1, characterized in that: The middle fixing block (203) is connected to the base outer frame (201) by screws, the inner diameter of the limiting sleeve (204) is the same as the outer diameter of the rotating shaft (205), and the limiting sleeve (204) and the rotating shaft (205) are tightly fitted.

4. The sofa backrest armrest rotating mechanism according to claim 1, characterized in that: The bottom end of the limiting sleeve (204) is sleeved with the lower fixing block (202), and the limiting sleeve (204) and the lower fixing block (202) are arranged at the same inclination.

5. The sofa backrest armrest rotating mechanism according to claim 1, characterized in that: The top end of the middle fixing block (203) is screw-connected to an upper fixing block (206), the inner side of the upper fixing block (206) is fitted and sleeved with the rotating shaft (205), and a positioning pin (207) is arranged on the outer side of the rotating shaft (205).

6. The sofa backrest armrest rotating mechanism according to claim 1, characterized in that: The top end slot of the rotating shaft (205) is connected to a connecting block (208), and the top end of the connecting block (208) is fixedly connected to a backrest frame (209).

7. The sofa backrest armrest rotating mechanism according to claim 5, characterized in that: A positioning installation groove (210) is provided on the surface of the upper fixing block (206), and a positioning block (211) is connected to the inner slot of the positioning installation groove (210).

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