Waist support headrest stretching mechanism of sofa

Abstract

The utility model discloses a waist support headrest stretching mechanism of a sofa, and relates to the technical field of intelligent sofas. The waist support headrest stretching mechanism of the sofa comprises a left side plate and a right side plate, the stretching mechanism is arranged between the left side plate and the right side plate, the stretching mechanism is divided into an installation unit and a stretching unit, the stretching mechanism is provided with an upper area and a lower area, the stretching mechanism is composed of the installation unit and the stretching unit, and the stretching unit comprises a cross beam supporting rod. Rotary installation openings are symmetrically distributed in the two ends of the cross beam supporting rod, rotary installation plates are arranged in the rotary installation openings, an opening area is arranged in the middle of the cross beam supporting rod, a meshing gear is arranged in the opening area, and a drawing caliper is arranged below the meshing gear. Through the design of the electric push rod in the extension unit and the overall extension of the overall frame, the bearing capacity of the sofa waist support headrest is increased, the time for disassembly and assembly is reduced, the rigidity is enhanced, regular maintenance and frequent maintenance by a user are reduced, and the economic benefit is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent sofas, in particular to a lumbar support and headrest extension mechanism for a sofa. Background Art

[0002] Sofas are commonly used daily necessities in people's daily lives, but sitting for a long time can easily make people feel tired. With the gradual improvement of people's living standards, people have higher and higher requirements for the comfort of sofas. Therefore, electric sofas have emerged in the market that can automatically adjust the working position and angle of each component of the sofa according to the actual needs of users. Compared with traditional sofas, electric sofas have become more and more popular and respected by people because of their unique and powerful diversified functionality and comfort.

[0003] However, the headrest of the existing electric sofa cannot respond and adjust to the head support in real time, which is not only time-consuming and labor-intensive to operate, but also has a cumbersome and complicated structure. In addition, the lumbar support is fixed in position and cannot fit and support the waist, and cannot adapt to different people. At the same time, it cannot support the legs, and the body cannot fit closely to the sofa, so that the sofa cannot be used as a reclining chair to support various parts of the body and relax them.

[0004] For example, Chinese patent publication number CN217243400U discloses a sofa with a headrest that rotates forward, a lumbar support that extends forward, and can support the legs. The sofa adjusts the angles of the headrest, lumbar support, and leg support through head, waist, and leg extension devices. However, the above-mentioned device adopts a whole-frame detachable connection method in the setting of the head and waist extension mechanism. Therefore, during the actual disassembly and assembly process, too many connections such as bolts make installation difficult, and the loosening of fasteners during subsequent maintenance causes abnormal noise when the user lies down. In addition, the sofa is not rigid and is more prone to bending and deformation. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides a lumbar support and headrest extension mechanism for a sofa, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a lumbar support and headrest extension mechanism for a sofa, comprising a left side panel and a right side panel, an extension mechanism being provided between the left side panel and the right side panel, the extension mechanism being divided into a mounting unit and an extension unit, and the extension mechanism being provided with an upper area and a lower area, the upper area being a headrest area and the lower area being a lumbar support area, the headrest area and the lumbar support area both being composed of a mounting unit and an extension unit;

[0007] The extension unit includes a beam support rod, and rotation mounting openings are symmetrically distributed at both ends of the beam support rod. A rotation mounting plate is arranged in the rotation mounting opening. An opening area is arranged in the middle of the beam support rod, and a meshing gear is arranged in the opening area. A pull-out caliper is arranged below the meshing gear.

[0008] A further improvement to the technical solution of this utility model is that the crossbeam support rod is located between the left and right panels, with both ends abutting against the left and right panels. The swivel mounting plate is clipped onto the crossbeam mounting rod via a swivel mounting opening. The meshing gear is fixedly connected to the crossbeam support rod, and the pull-out caliper meshes with the meshing gear. The present utility model extends the sofa lumbar support and headrest by pushing the pull-out caliper, which causes the meshing gear to rotate, thereby completing the rotation of the entire crossbeam support rod between the left and right panels.

[0009] A further improvement to the technical solution of this utility model is that the mounting unit comprises a first stabilizing plate welded to the left and right panels and a second stabilizing plate detachably connected to the left and right panels. The first and second stabilizing plates are located at the front and rear ends of a caliper seat provided at the bottom of the drawer caliper. The caliper seat slides with the drawer caliper via an internal sliding slot. The first stabilizing plate is connected to increase the support rigidity of the lumbar support headrest, while the second stabilizing plate is connected to facilitate assembly and disassembly.

[0010] A further improvement to the technical solution of this utility model is that the upper and lower portions of the left and right panels are provided with hinged rods, which are fixedly connected to meshing gears and fixedly connected to the rotating mounting plate via a rotating mounting opening. The crossbeam support rod is hingedly connected to the abutting left and right panels via the hinged rod. The utility model utilizes an electric push rod design and an integral extension of the overall frame, which increases the bearing capacity of the sofa lumbar support and headrest, reduces assembly and disassembly time, and enhances rigidity. Furthermore, the electric push rod has a simpler management process than a pneumatic cylinder, reducing regular maintenance and frequent repairs for users. The push rod control process is also controllable, resulting in improved economic benefits.

[0011] A further improvement to the technical solution of this utility model is that the two ends of the crossbeam support rod are symmetrically fixed with fixing posts, each of which has a notch formed in it, and a spring is sleeved in the notch. The other end of the spring is connected to a traction plate, which is vertically installed in the middle of the left and right panels. This utility model integrates the extension of the headrest area and the lumbar support area within the extension unit through the installation unit, and is assembled uniformly during the installation process, making the sofa assembly more convenient and eliminating the need for frequent mold changes during production, allowing for rapid production of the entire sofa.

[0012] A further improvement of the technical solution of the present invention is that the left side plate and the right side plate have the same shape, material and structure, an electric push rod is symmetrically fixedly installed on the first stable plate, and the electric push rod is detachably connected to the pull-out caliper through an extended connecting piece.

[0013] Beneficial effects

[0014] The utility model provides a lumbar support and headrest extension mechanism for a sofa. Compared with the prior art, it has the following advantages:

[0015] 1. The lumbar support and headrest extension mechanism of the sofa increases the bearing capacity of the lumbar support and headrest through the design of the electric push rod in the extension unit and the overall extension of the overall frame, reduces the time for disassembly and assembly, and enhances the rigidity. In addition, the management procedure of the electric push rod is relatively simple, which reduces the user's regular maintenance and frequent repairs. The control of the push rod process is also controllable, which also improves the economic benefits and is not prone to bending and deformation.

[0016] 2. The lumbar support and headrest extension mechanism of the sofa integrates the extension of the headrest area and the lumbar support area in the extension unit through the installation unit, and is assembled uniformly during the installation process, making the assembly of the sofa more convenient. At the same time, there is no need to frequently change the mold during production and processing to complete the overall rapid production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 is a schematic diagram of the stretching unit of the present invention;

[0019] Figure 3 This is a schematic diagram of the installation unit of the utility model;

[0020] Figure 4 It is a structural diagram of the extension mechanism of the utility model.

[0021] In the figure: 101, left side plate; 102, right side plate; 201, crossbeam support rod; 202, rotating mounting port; 203, rotating mounting plate; 204, meshing gear; 205, pull-out caliper; 206, hinged rod; 207, electric push rod; 208, connecting piece; 301, first stabilizing plate; 302, second stabilizing plate; 303, caliper seat; 304, fixing column; 305, spring; 306, traction plate. DETAILED DESCRIPTION

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

[0023] This utility model provides two technical solutions:

[0024] Figure 1-3 The first embodiment is shown: a lumbar support and headrest extension mechanism for a sofa, comprising a left side panel 101 and a right side panel 102. An extension mechanism is provided between the left side panel 101 and the right side panel 102. The extension mechanism is divided into a mounting unit and an extension unit. The extension mechanism has an upper area and a lower area. The upper area is a headrest area and the lower area is a lumbar support area. Both the headrest area and the lumbar support area are composed of the mounting unit and the extension unit.

[0025] The extension unit includes a beam support rod 201, and a rotating mounting opening 202 is symmetrically distributed at both ends of the beam support rod 201. A rotating mounting plate 203 is arranged in the rotating mounting opening 202. An opening area is arranged in the middle of the beam support rod 201, and an engaging gear 204 is arranged in the opening area. A pull-out caliper 205 is arranged below the engaging gear 204.

[0026] The crossbeam support rod 201 is located between the left and right panels 101, 102, with both ends abutting against the left and right panels 101, 102. The swivel mounting plate 203 is clipped onto the crossbeam support rod 201 through the swivel mounting opening 202. The meshing gear 204 is fixedly connected to the crossbeam support rod 201, and the pull-out caliper 205 meshes with the meshing gear 204. The present invention extends the sofa lumbar support and headrest by pushing the pull-out caliper 205, thereby rotating the meshing gear 204, thereby completing the rotation of the crossbeam support rod 201 between the left and right panels 101, 102.

[0027] Figure 1-2 Figures 4 and 5 illustrate a second embodiment, which differs from the first embodiment primarily in that the mounting unit comprises a first stabilizing plate 301 welded to the left and right panels 101, 102, and a second stabilizing plate 302 detachably connected to the left and right panels 101, 102. The first and second stabilizing plates 301, 302 are located at the front and rear ends of a caliper seat 303 disposed at the bottom of the drawer caliper 205. The caliper seat 303 slides with the drawer caliper 205 via an internal sliding slot. The first stabilizing plate 301 is connected to increase the rigidity of the lumbar support headrest, while the second stabilizing plate 302 is connected to facilitate assembly and disassembly.

[0028] The left and right panels 101 and 102 are provided with hinged rods 206 at their upper and lower portions. The hinged rods 206 are fixedly connected to the meshing gears 204. The hinged rods 206 are fixedly connected to the rotating mounting plate 203 via the rotating mounting opening 202. The crossbeam support rod 201 is hingedly connected to the left and right panels 101 and 102, which are in contact with each other, via the hinged rods 206. The present invention utilizes the design of an electric push rod 207 and the overall extension of the overall frame, which increases the bearing capacity of the sofa lumbar support and headrest, reduces assembly and disassembly time, and enhances rigidity. Furthermore, the electric push rod 207 has a simpler management process than a pneumatic cylinder, reducing regular maintenance and frequent repairs for users. The push rod control process is also controllable, which also improves economic benefits.

[0029] A fixing post 304 is symmetrically mounted on each end of the crossbeam support rod 201. The fixing post 304 has a notch in which a spring 305 is mounted. The other end of the spring 305 is connected to a traction plate 306, which is vertically positioned between the left and right panels 101 and 102. This utility model integrates the headrest and lumbar support areas within the extension unit through the installation unit, allowing for unified assembly during installation. This makes sofa assembly more convenient and eliminates the need for frequent mold changes during production, allowing for rapid production of the entire unit.

[0030] The left side plate 101 and the right side plate 102 have the same shape, material and structure. The electric push rod 207 is symmetrically fixedly installed on the first stabilizing plate 301. The electric push rod 207 is detachably connected to the pull-out caliper 205 through an extended connecting piece 208.

[0031] At the same time, the contents not described in detail in this specification belong to the existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used.

[0032] During use, when adjusting and extending the angle of the headrest, the electric push rod 207 in the upper area is adjusted, and the pull-out caliper 205 connected by the connecting piece 208 slides in the sliding groove in the caliper seat 303. Due to the meshing transmission relationship, the meshing gear 204 rotates, thereby rotating the crossbeam support rod 201 abutting between the left plate 101 and the right plate 102, that is, the rotating mounting plate 203 of the rotating mounting port 202 rotates, thereby changing the angle of the headrest. The same is true for the extension of the lumbar support. During the extension and reset process, the headrest and lumbar support are quickly reset due to the elastic force of the spring and the contraction of the electric push rod 207.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lumbar support and headrest extension mechanism for a sofa, comprising a left side panel (101) and a right side panel (102), characterized in that: An extension mechanism is provided between the left side plate (101) and the right side plate (102), the extension mechanism being divided into a mounting unit and an extension unit, and the extension mechanism being provided with an upper area and a lower area, the upper area being a headrest area and the lower area being a lumbar support area, the headrest area and the lumbar support area both being composed of the mounting unit and the extension unit; The extension unit comprises a crossbeam support rod (201), rotational mounting openings (202) are symmetrically distributed at both ends of the crossbeam support rod (201), a rotational mounting plate (203) is arranged in the rotational mounting opening (202), an opening area is arranged in the middle of the crossbeam support rod (201), a meshing gear (204) is arranged in the opening area, and a pull-out caliper (205) is arranged below the meshing gear (204).

2. The lumbar support and headrest extension mechanism for a sofa according to claim 1, characterized in that: The crossbeam support rod (201) is located between the left side plate (101) and the right side plate (102), and both ends abut against the left side plate (101) and the right side plate (102); the rotary mounting plate (203) is clamped on the crossbeam support rod (201) through the rotary mounting opening (202); the meshing gear (204) is fixedly connected to the crossbeam support rod (201), and the pull-out caliper (205) meshes with the meshing gear (204).

3. The lumbar support and headrest extension mechanism for a sofa according to claim 1, characterized in that: The mounting unit comprises a first stabilizing plate (301) welded to a left side plate (101) and a right side plate (102) and a second stabilizing plate (302) detachably connected to the left side plate (101) and the right side plate (102), wherein the first stabilizing plate (301) and the second stabilizing plate (302) are located at the front and rear ends of a caliper seat (303) provided at the bottom of the draw-out caliper (205), and the caliper seat (303) slides with the draw-out caliper (205) via a sliding groove provided therein.

4. The lumbar support and headrest extension mechanism for a sofa according to claim 3, characterized in that: The upper and lower parts of the left side plate (101) and the right side plate (102) are provided with hinged rods (206), the hinged rods (206) are fixedly connected to the meshing gear (204), the hinged rods (206) are fixedly connected to the rotating mounting plate (203) through the rotating mounting opening (202), and the crossbeam support rod (201) is hinged to the abutting left side plate (101) and right side plate (102) through the hinged rods (206).

5. The lumbar support and headrest extension mechanism for a sofa according to claim 1, characterized in that: The two ends of the crossbeam support rod (201) are symmetrically fixed with fixed columns (304), the fixed columns (304) are provided with notches, a spring (305) is sleeved on the notches, the other end of the spring (305) is connected to a traction plate (306), and the traction plate (306) is vertically set in the middle of the left plate (101) and the right plate (102).

6. The lumbar support and headrest extension mechanism for a sofa according to claim 3, characterized in that: The left side plate (101) and the right side plate (102) are identical in shape, material and structure; an electric push rod (207) is symmetrically fixedly mounted on the first stabilizing plate (301); the electric push rod (207) is detachably connected to the pull-out caliper (205) via an extended connecting piece (208).

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