Adjustable fixing structure of sofa iron stand

Abstract

The utility model discloses an adjustable fixing structure of a sofa iron stand, which comprises a main frame and a backrest frame, the bottom of the main frame is fixedly connected with a front supporting leg and a rear supporting leg, the main frame is rotatably connected with the backrest frame through a front mute rotating structure and a rear mute rotating structure, and the left sides of the supporting legs are provided with stepless adjusting locking mechanisms. The stepless adjustment locking mechanism is used for locking the position of the backrest frame after the backrest frame is adjusted at any angle; comprising a front fixing plate and a rear fixing plate, the two fixing plates are fixedly connected with the left sides of the front supporting leg and the rear supporting leg respectively, and a middle rod is rotationally connected between the opposite sides of the two fixing plates. According to the adjustable fixing structure of the sofa iron stand, when the angle of the backrest frame on the sofa iron stand is adjusted, locking is carried out through the stepless adjustment locking mechanism and through cooperation of the guide rails and the stop levers, so that the effect of adjusting at any angle is achieved, and the practicability of the device in use is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sofa iron frame technical field, concretely is adjustable fixed structure of sofa iron frame. BACKGROUND

[0002] The sofa as a kind of furniture, has played very important role in people's life, whether it is beautifying home environment, or provide comfortable rest environment for people, it is a kind of furniture that is indispensable. In home life, whether people are at home entertainment or rest, like using sofa this soft and comfortable furniture, sofa has backrest, can rest comfortably on backrest when sitting on sofa.

[0003] Reference patent announcement No. "CN117898574A" discloses a kind of adjustable fixing device of sofa iron frame, comprising: a pair of mounting plate, mounting plate is fixedly connected with sofa iron frame;A pair of connecting plate, connecting plate is fixedly connected with mounting plate, connecting plate is L-shaped structure;A pair of rotating plate, rotating plate is fixedly connected with connecting plate;Locking mechanism, two rotating plates are connected by locking mechanism between them;Locking mechanism includes first support and second support, respectively fixedly connected on two rotating plates, first support is fixedly connected with shaft rod on it.

[0004] As shown in the above technology, the existing sofa iron frame usually has backrest angle adjustment function, is completed by locking mechanism when angle adjustment is carried out, is locked after angle adjustment is completed, but the angle of existing adjustment is mostly fixed angle adjustment, cannot reach the effect of arbitrary angle adjustment. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of prior art, the utility model provides an adjustable fixing structure of sofa iron frame, solves the problem that the adjustable fixing structure of existing sofa iron frame cannot reach arbitrary angle adjustment.

[0006] To achieve the above object, the utility model is realized by the following technical scheme: an adjustable fixing structure of sofa iron frame includes main frame and backrest frame, the bottom of main frame is fixedly connected with two support legs in front and back, main frame and backrest frame are rotationally connected by two groups of mute rotation structure in front and back, the left side of support leg is provided with stepless adjustment locking mechanism, and stepless adjustment locking mechanism is used for position locking after backrest frame is adjusted at arbitrary angle;

[0007] The stepless adjustment locking mechanism includes two fixed plates in front and back, two fixed plates are fixedly connected with the left side of two support legs in front and back respectively, intermediate rod is rotationally connected between the opposite side of two fixed plates, the surface of intermediate rod is fixedly connected with two discs in front and back, the side, which is away from each other, of two discs is fixedly connected with two blocking rods in up and down, the inner side of backrest frame is fixedly connected with two guide rails in front and back.

[0008] Preferably, the inner part of the disc is provided with an arc-shaped through slot, and the intermediate rod passes through the arc-shaped through slot in the inner part of the disc.

[0009] Preferably, the surface of the intermediate rod is fixedly connected with a fixing disc, a torsion spring is sleeved on the surface of the intermediate rod between the fixing disc and the fixing plate, one end of the torsion spring is fixedly connected with the fixing plate, and the other end of the torsion spring is fixedly connected with the fixing disc.

[0010] Preferably, one end of the intermediate rod penetrating through the fixing plate and extending to the rear of the fixing plate is fixedly connected with an L-shaped rod, and one side of the L-shaped rod is fixedly connected with a pedal.

[0011] Preferably, the mute rotating structure comprises a fixing seat and a screw rod, the fixing seat is fixedly connected with the left side of the inner wall of the main frame, the inner part of the backrest frame is provided with a insertion hole, a rubber sleeve is inserted into the insertion hole, the rubber sleeve is in the shape of a T-shaped hollow sleeve, and at least four limiting strips are fixedly connected with the surface of the rubber sleeve at equal distances, and the shape of the insertion hole is consistent with the shape of the rubber sleeve.

[0012] Preferably, the screw rod penetrates through the fixing seat and the limiting strips in sequence, and the surface of one end of the screw rod penetrating out of the fixing seat is threadedly connected with a nut.

[0013] Beneficial effects

[0014] The adjustable fixing structure of the sofa iron frame has the following beneficial effects compared with the prior art:

[0015] 1. The adjustable fixing structure of the sofa iron frame comprises two fixing plates, two fixing plates are fixedly connected with the left sides of two supporting legs respectively, an intermediate rod is rotatably connected between the opposite sides of the two fixing plates, and the stepless adjustment locking mechanism is used for angle adjustment of the backrest frame on the sofa iron frame, and the backrest frame is locked through cooperation of the guide rail and the blocking rod, so that the effect of adjustment at any angle is achieved, and the practicability of the device during use is improved.

[0016] 2. The adjustable fixing structure of the sofa iron frame comprises a mute rotating structure, the mute rotating structure comprises a fixing seat and a screw rod, the fixing seat is fixedly connected with the left side of the inner wall of the main frame, the inner part of the backrest frame is provided with a insertion hole, a rubber sleeve is inserted into the insertion hole, the screw rod is used for the rotating connection between the backrest frame and the main frame, and the rubber sleeve is arranged between the screw rod and the backrest frame, so that the noise during rotation is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic view of the appearance of the utility model;

[0018] Figure 2 It is a partial view of the utility model;

[0019] Figure 3 It is a stepless adjustment locking mechanism of the utility model;

[0020] Figure 4 It is an exploded view of the mute rotating structure of the utility model.

[0021] In the figure: 1, main frame; 2, mute rotating structure; 21, fixed seat; 22, screw rod; 23, nut; 24, insertion hole; 25, rubber sleeve; 26, limiting strip; 3, backrest frame; 4, support leg; 5, stepless adjustment locking mechanism; 51, fixed plate; 52, intermediate rod; 53, guide rail; 54, disc; 55, stop rod; 56, fixed disc; 57, torsional spring; 58, L-shaped rod; 59, pedal. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Please refer to Figures 1-4 The adjustable fixing structure of the sofa iron frame provides two technical solutions:

[0024] The first embodiment: including main frame 1 and backrest frame 3, the bottom of main frame 1 is fixedly connected with two front and rear support legs 4, the left side of support leg 4 is provided with stepless adjustment locking mechanism 5, and stepless adjustment locking mechanism 5 is used for position locking after backrest frame 3 is adjusted at any angle;

[0025] The stepless adjustment locking mechanism 5 comprises two fixed plates 51 fixedly connected to the left sides of the front and rear support legs 4, respectively, an intermediate rod 52 rotatably connected between the opposite sides of the two fixed plates 51, two circular discs 54 fixedly connected to the surface of the intermediate rod 52, two blocking rods 55 fixedly connected to the opposite sides of the two circular discs 54, two guide rails 53 fixedly connected to the inner side of the backrest frame 3, an arc-shaped through slot formed in the interior of the circular disc 54, the intermediate rod 52 passing through the arc-shaped through slot in the interior of the circular disc 54, the circular disc 54 rotating and causing the two blocking rods 55 to press on the upper and lower sides of the guide rails 53 to lock the position of the backrest frame 3, a fixed disc 56 fixedly connected to the surface of the intermediate rod 52, a torsional spring 57 sleeved on the surface of the intermediate rod 52 between the fixed disc 56 and the fixed plate 51, one end of the torsional spring 57 being fixedly connected to the fixed plate 51 and the other end of the torsional spring 57 being fixedly connected to the fixed disc 56, and an L-shaped rod 58 fixedly connected to one end of the intermediate rod 52 penetrating through the fixed plate 51 and extending to the rear of the fixed plate 51, and a pedal 59 fixedly connected to one side of the L-shaped rod 58.

[0026] When the angle of the backrest frame 3 on the sofa iron frame is adjusted, the stepless adjustment locking mechanism 5 is used for adjustment and locking through the cooperation of the guide rails 53 and the blocking rods 55, so that the effect of adjustment at any angle is achieved, and the practicability of the device during use is improved.

[0027] The second embodiment mainly differs from the first embodiment in that the main frame 1 and the backrest frame 3 are rotatably connected through two groups of mute rotating structures 2, the mute rotating structure 2 comprises a fixed seat 21 and a screw rod 22, the fixed seat 21 is fixedly connected to the left side of the inner wall of the main frame 1, the interior of the backrest frame 3 is provided with a bushing 24, the bushing 24 is provided with a rubber sleeve 25, the shape of the rubber sleeve 25 is a T-shaped hollow sleeve, at least four limiting strips 26 are fixedly connected to the surface of the rubber sleeve 25 at equal distances, the shape of the bushing 24 is consistent with the shape of the rubber sleeve 25, and the screw rod 22 penetrates through the fixed seat 21 and the limiting strips 26 in sequence, and the surface of one end of the screw rod 22 penetrating out of the fixed seat 21 is threadedly connected with a nut 23.

[0028] The part where the backrest frame 3 and the main frame 1 are rotatably connected is through the screw rod 22, and the rubber sleeve 25 is arranged between the screw rod 22 and the backrest frame 3, so as to reduce the noise during rotation.

[0029] When the angle of the backrest frame 3 is adjusted, the pedal 59 is stepped down to rotate the intermediate rod 52, the intermediate rod 52 rotates and drives the blocking rods 55 to rotate through the circular disc 54, the blocking rods 55 rotate and move away from the guide rails 53, at this time, the backrest frame 3 can be adjusted in angle, after the angle adjustment of the backrest frame 3 is completed, the pedal 59 is released, the intermediate rod 52 rotates back under the reaction force of the torsional spring 57, and then the two blocking rods 55 press on the two sides of the guide rails 53, and then the position locking is completed.

[0030] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0031] While embodiments of the present application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since the scope of the application is defined with respect to the appended claims.

Claims

1. An adjustable fixing structure of a sofa iron frame, comprising a main frame (1) and a backrest frame (3), characterized in that: The bottom of the main frame (1) is fixedly connected with two support legs (4) in front and back, the main frame (1) and the backrest frame (3) are rotatably connected through two groups of mute rotating structures (2), the left side of the support leg (4) is provided with a stepless adjustment locking mechanism (5), and the stepless adjustment locking mechanism (5) is used for locking the position of the backrest frame (3) after adjustment at any angle; The stepless adjustment locking mechanism (5) comprises two fixed plates (51), the two fixed plates (51) are fixedly connected with the left sides of the two support legs (4) in front and back respectively, and an intermediate rod (52) is rotatably connected between the opposite sides of the two fixed plates (51). The surface of the intermediate rod (52) is fixedly connected with two disc-shaped plates (54) in front and back, the opposite sides of the two disc-shaped plates (54) are fixedly connected with two blocking rods (55) in up and down, and the inner side of the backrest frame (3) is fixedly connected with two guide rails (53) in front and back.

2. The adjustable fixing structure of a sofa iron frame according to claim 1, characterized in that: An arc-shaped through groove is formed in the disc-shaped plate (54), the intermediate rod (52) passes through the arc-shaped through groove in the disc-shaped plate (54), the disc-shaped plate (54) is rotated to press the two blocking rods (55) on the upper and lower sides of the guide rail (53) to lock the position of the backrest frame (3).

3. The adjustable fixing structure of a sofa iron frame according to claim 1, characterized in that: The surface of the intermediate rod (52) is fixedly connected with a fixed disc (56), a torsion spring (57) is sleeved on the surface of the intermediate rod (52) between the fixed disc (56) and the fixed plate (51), one end of the torsion spring (57) is fixedly connected with the fixed plate (51), and the other end of the torsion spring (57) is fixedly connected with the fixed disc (56).

4. The adjustable fixing structure of a sofa iron frame according to claim 1, characterized in that: One end of the intermediate rod (52) penetrating through the fixed plate (51) and extending to the rear of the fixed plate (51) is fixedly connected with an L-shaped rod (58), and one side of the L-shaped rod (58) is fixedly connected with a pedal (59).

5. The adjustable fixing structure of a sofa iron frame according to claim 1, characterized in that: The mute rotating structure (2) comprises a fixed seat (21) and a screw rod (22), the fixed seat (21) is fixedly connected with the left side of the inner wall of the main frame (1), the backrest frame (3) is provided with a bushing (24) in the inside, the rubber sleeve (25) is inserted into the inside of the bushing (24), the shape of the rubber sleeve (25) is a T-shaped hollow sleeve, and at least four limiting strips (26) are fixedly connected with the surface of the rubber sleeve (25) at equal distances, and the shape of the bushing (24) is consistent with the shape of the rubber sleeve (25).

6. The adjustable fixing structure of a sofa iron frame according to claim 5, characterized in that: The screw rod (22) penetrates through the fixed seat (21) and the limiting strips (26) in sequence, and the surface of one end of the screw rod (22) penetrating out of the fixed seat (21) is threadedly connected with a nut (23).

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