Sofa iron stand
By designing clearance gaps and linkage rod structures in the sofa frame, the problem of friction noise between the backrest assembly and the seat cushion upholstery was solved, achieving a silent effect during posture changes.
Patent Information
- Application Number
- CN202423085220.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-13
AI Technical Summary
During the posture changes of the existing sofa frame, the backrest component comes into contact with and rubs against the seat cushion on the seat frame mounting plate, causing noise.
Design a sofa frame structure that allows for a clearance between the front end of the backrest assembly and the upholstery mounting position when the backrest assembly is shifted to a reclining position, thus avoiding contact and friction. The clearance is maintained during posture changes through the cooperation of the linkage rod and hinge point.
This effectively avoids contact and friction between the backrest components and the seat cushion, reducing noise generation and improving the user experience.
Smart Images
Figure CN223653550U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to electric sofa iron stand technical field, specifically related to a sofa iron stand. BACKGROUND
[0002] At present, in order to improve the comfort, the posture of sofa will be designed as adjustable, namely setting sofa iron stand in the interior of sofa, thereby driving sofa iron stand to transform between sitting position and lying position.
[0003] Sofa iron stand at least includes two symmetrical setting telescopic mechanisms, two telescopic mechanisms all at least include seat frame mounting plate and backrest assembly hinged on seat frame mounting plate, wherein two seat frame mounting plates are used to install seat frame.
[0004] In the related art, in the process that sofa iron stand transforms from sitting position to lying position, backrest assembly will move forward relative to seat frame mounting plate, when posture transforms to lying position, backrest assembly often contacts with cushion soft package installed on seat frame mounting plate, resulting in friction sound.
[0005] Therefore, how to avoid friction with seat frame on seat frame mounting plate in the process of posture transformation is a technical problem that the person skilled in the art needs to solve urgently.
[0006] It should be noted that the above information disclosed in the background technology part of the present application is only used to understand the background technology of the concept of the present application, therefore, the above description is not considered as the information of prior art. CONTENT OF THE UTILITY MODEL
[0007] The embodiment of the present application at least provides a sofa iron stand, which comprises: a base; two telescopic mechanisms, symmetrically arranged on both sides of the base, and each comprising: a seat frame mounting plate and a backrest assembly; wherein the seat frame mounting plate is provided with a soft package mounting position for mounting a cushion soft package, and the backrest assembly is located at the rear side of the soft package mounting position; a driving mechanism adapted to drive the sofa iron stand to transform between at least a sitting position and a lying position; wherein, in the process that the sofa iron stand transforms from the sitting position to the lying position, the backrest assembly moves forward relative to the seat frame mounting plate; and in the lying position, an avoidance gap is left between the front end face of the backrest assembly and the soft package mounting position, and the width H of the avoidance gap is not more than 20mm.
[0008] In an optional embodiment, the backrest assembly comprises: a first linkage rod and a second linkage rod; wherein the first linkage rod is hinged with the seat frame mounting plate at a first hinge point; the first linkage rod is hinged with the second linkage rod at a hinge point A; in the lying position, the hinge point A and the soft package mounting position form the avoidance gap.
[0009] In an alternative embodiment, the distance L between the first articulation point and the soft bag mounting position ranges from 65mm to 95mm.
[0010] In an alternative embodiment, the forward movement distance M of the articulation point A ranges from 220mm to 260mm when the sofa iron frame is transformed from the sitting position to the lying position.
[0011] In an alternative embodiment, the angle a between the straight line where the articulation point A and the first articulation point are located and the mounting surface of the seat frame mounting plate ranges from 55° to 75° in the sitting position.
[0012] In an alternative embodiment, the angle a between the straight line where the articulation point A and the first articulation point are located and the mounting surface of the seat frame mounting plate ranges from 25° to 45° in the lying position.
[0013] In an alternative embodiment, the backrest assembly further comprises a third linkage rod and an extension rod; wherein the extension rod is fixedly connected with the seat frame mounting plate; the third linkage rod is articulated with the extension rod at a second articulation point, and articulated with the second linkage rod at a third articulation point; the lower end of the third linkage rod is articulated with the bottom plate through a bottom plate connecting rod; the seat frame mounting plate moves forward relative to the bottom plate when the sofa iron frame is transformed from the sitting position to the lying position.
[0014] In an alternative embodiment, the backrest assembly further comprises a backrest plate and a backrest connecting rod; wherein the front end of the backrest plate is articulated with the second linkage rod at a fourth articulation point, and the rear end of the backrest plate is articulated with the third linkage rod at a fifth articulation point through the backrest connecting rod.
[0015] In an alternative embodiment, the backrest plate inclines backward by an angle β ranging from 25° to 40° when the sofa iron frame is transformed from the sitting position to the lying position.
[0016] In an alternative embodiment, a waist-shaped limiting hole is formed on the first linkage rod; and a limiting column inserted into the waist-shaped limiting hole is arranged on the seat frame mounting plate.
[0017] The sofa iron frame of the present application has the following beneficial effects: during the transformation of the sofa iron frame from the sitting position to the lying position, the backrest assembly moves forward relative to the seat frame mounting plate, and in the lying position, a clearance is left between the front end surface of the backrest assembly and the soft bag mounting position, thereby avoiding the contact and friction between the backrest assembly and the cushion soft bag.
[0018] The other features and advantages of the present application will be more apparent from the following description and will be partially apparent from the description or will be learned through practice of the present application. The objects and other advantages of the present application will be achieved and obtained by means of the structures particularly pointed out in the description, the claims, and the accompanying drawings.
[0019] In order to make the above objectives, features and advantages of the present application more apparent, a preferred embodiment is described in detail below, and the accompanying drawings are described. The detailed description is as follows. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor.
[0021] Figure 1 A structural schematic diagram of a sofa iron frame provided by the embodiment of the present disclosure is provided.
[0022] Figure 2 A structural schematic diagram of a sitting position of a sofa iron frame provided by the embodiment of the present disclosure is provided.
[0023] Figure 3 A structural schematic diagram of a lying position of a sofa iron frame provided by the embodiment of the present disclosure is provided.
[0024] Figure 4 A structural schematic diagram of a sitting position structure provided by the embodiment of the present disclosure and installed with a cushion soft package is provided.
[0025] Figure 5 A structural schematic diagram of a lying position structure provided by the embodiment of the present disclosure and installed with a cushion soft package is provided.
[0026] Figure 6 A structural schematic diagram of a hinge point A in a sitting position and a lying position provided by the embodiment of the present disclosure is provided.
[0027] Figure 7 A connection structural schematic diagram of a third linkage rod provided by the embodiment of the present disclosure is provided.
[0028] Figure 8 A structural schematic diagram of a backrest assembly provided by the embodiment of the present disclosure is provided.
[0029] In the drawings:
[0030] Base 1;
[0031] The telescopic mechanism 2, the seat frame mounting plate 21, the soft bag mounting position 211, the limiting column 212, the backrest assembly 22, the first linkage rod 221, the waist-shaped limiting hole 2211, the second linkage rod 222, the third linkage rod 223, the extension rod 224, the backrest plate 225, the backrest connecting rod 226;
[0032] The first hinge point 41, the second hinge point 42, the third hinge point 43.
[0033] The bottom plate 5, the bottom plate connecting rod 51.
[0034] The cushion soft bag 6.
[0035] The width H of the avoidance gap, the hinge point A of the first linkage rod and the second linkage rod, the distance L between the first hinge point and the soft bag mounting position, the forward movement distance M of the hinge point A, the included angle a between the straight line where the hinge point A and the first hinge point are located and the mounting surface of the seat frame mounting plate, and the included angle β of the backrest plate backward inclination. DETAILED DESCRIPTION
[0036] To make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0037] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, in the drawings, in order to effectively describe the technical content, the thickness of the components can be exaggerated or reduced.
[0038] Some embodiments of the present application will be described in detail below in conjunction with the drawings. In the case of no conflict, the following embodiments and the features in the embodiments can be combined with each other.
[0039] As Figures 1 to 5As shown, at least one embodiment provides a sofa iron frame, which comprises: a base 1; two telescopic mechanisms 2, symmetrically arranged on both sides of the base 1, and each comprising: a seat frame mounting plate 21 and a backrest assembly 22; wherein the seat frame mounting plate 21 is provided with a soft package mounting position 211 for mounting a seat cushion soft package 6, and the backrest assembly 22 is located at the rear side of the soft package mounting position 211; a driving mechanism (not shown in the figure, which can adopt a linear air cylinder) adapted to drive the sofa iron frame to change at least between a sitting position and a lying position; wherein during the change of the sofa iron frame from the sitting position to the lying position, the backrest assembly 22 will move forward relative to the seat frame mounting plate 21; and in the lying position, there is an avoidance gap between the front end face of the backrest assembly 22 and the soft package mounting position 211, and the width H of the avoidance gap is not more than 20 mm.
[0040] Specifically, the seat cushion soft package 6 is installed in the soft package mounting position 211 of the seat frame mounting plate 21, and during the change of the sofa iron frame from the sitting position to the lying position, the backrest assembly 22 will move forward relative to the seat frame mounting plate 21; when the backrest assembly 22 extends into the soft package mounting position 211 and contacts the seat cushion soft package 6, it will generate sound due to friction, in order to avoid the sound, the sofa iron frame leaves an avoidance gap between the front end face of the backrest assembly 22 and the soft package mounting position 211 in the lying position, thereby avoiding the contact and friction between the backrest assembly 22 and the seat cushion soft package 6.
[0041] As shown in the figure, Figure 2 In some embodiments, the backrest assembly 22 comprises: a first linkage rod 221 and a second linkage rod 222; wherein the first linkage rod 221 is hinged with the seat frame mounting plate 21 at a first hinge point 41; the first linkage rod 221 is hinged with the second linkage rod 222 at a hinge point A; and in the lying position, the hinge point A and the soft package mounting position 211 form the avoidance gap.
[0042] Specifically, the hinge point A is the frontmost end of the backrest assembly 22, and the forward movement of the hinge point A will drive the backrest plate 225 to move forward.
[0043] As shown in the figure, Figure 7 In some embodiments, the backrest assembly 22 further comprises: a third linkage rod 223 and an extension rod 224; wherein the extension rod 224 is fixedly connected with the seat frame mounting plate 21; the third linkage rod 223 is hinged with the extension rod 224 at a second hinge point 42, and the third linkage rod 223 is hinged with the second linkage rod 222 at a third hinge point 43; the lower end of the third linkage rod 223 is hinged with the bottom plate 5 through a bottom plate connecting rod 51; and during the change of the sofa iron frame from the sitting position to the lying position, the seat frame mounting plate 21 will move forward relative to the bottom plate 5.
[0044] As shown in the figure, Figure 8As shown, in some embodiments, the backrest assembly 22 further includes a backrest plate 225 and a backrest link 226; wherein the front end of the backrest plate 225 is hinged to the second linkage 222 at the fourth hinge point 44, and the rear end of the backrest plate 225 is hinged to the third linkage 223 at the fifth hinge point 45 via the backrest link 226.
[0045] Specifically, a linkage mechanism is formed between the first linkage rod 221, the second linkage rod 222, the third linkage rod 223, the extension rod 224, the seat frame mounting plate 21, the base plate connecting rod 51, and the base plate 5. During the process of the sofa frame changing from a sitting position to a reclining position, it drives the backrest 225 to move forward and tilt backward.
[0046] like Figure 8 As shown, in some embodiments, the first linkage rod 221 is provided with a waist-shaped limiting hole 2211; the seat frame mounting plate 21 is provided with a limiting post 212 that is inserted into the waist-shaped limiting hole 2211; the forward movement distance of the hinge point A on the first linkage rod 221 is limited by the limiting post 212 and the waist-shaped limiting hole 2211.
[0047] like Figure 2 As shown, in some embodiments, in order to leave a clearance, the distance L between the first hinge point 41 and the soft-pack mounting position 211 is set to a range of 65mm to 95mm; preferably, the distance L is set to a range of 78mm to 85mm; specifically, the distance L of the iron frame of this sofa is 82mm.
[0048] like Figure 6 As shown, in some embodiments, when the sofa frame changes from a sitting position to a reclining position, the forward movement distance M of the hinge point A ranges from 220mm to 260mm; preferably, the distance M is set to 230mm to 250mm; specifically, the distance M of this sofa frame is 242mm.
[0049] like Figure 7 As shown, in some embodiments, in the seated position, the angle α between the straight line containing hinge point A and the first hinge point 41 and the mounting surface of the seat frame mounting plate 21 ranges from 55° to 75°; preferably, in the seated position, the angle α ranges from 60° to 70°; specifically, in the seated position, the angle α of the sofa frame is 65°.
[0050] like Figure 8 As shown, in some embodiments, in the reclining position, the angle α between the straight line containing hinge point A and the first hinge point 41 and the mounting surface of the seat frame mounting plate 21 ranges from 25° to 45°; preferably, in the reclining position, the angle α ranges from 30° to 40°; specifically, in the sitting position, the angle α of the sofa frame is 34°.
[0051] like Figure 7 As shown, in some embodiments, when the sofa frame changes from a sitting position to a reclining position, the included angle β of the backrest 225 tilting backward ranges from 25° to 40°; preferably, the included angle β ranges from 25° to 35°; specifically, the included angle β of this sofa frame is 30°.
[0052] In summary, during the process of changing from a sitting position to a reclining position, the backrest assembly 22 will move forward relative to the seat frame mounting plate 21. In the reclining position, a clearance is left between the front end of the backrest assembly 22 and the soft cushion mounting position 211, thereby avoiding contact and friction between the backrest assembly 22 and the seat cushion soft cushion 6.
[0053] In this document, when it is said that the first component is located on the second component, this can mean that the first component can be directly formed on the second component, or that the third component can be inserted between the first component and the second component.
[0054] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.
[0055] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.
[0056] In the description of the embodiments of the utility model, unless another explicit provision and limitation, the term "mount", "connect", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication.For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0057] Spatially relative terms, such as "inner", "outer", "below", "below", "lower", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms can be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, the element(s) described as "below" or "beneath" the other element(s) or feature(s) would then be oriented "above" the other element(s) or feature(s). Thus, the example term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
[0058] In the above discussion, unless otherwise stated, the term "about", "approximately", "substantially" and the like, when used in describing a numerical value, means a + / - 10% variation of the value.
[0059] With the above ideal embodiments according to the utility model as the inspiration, through the above description, the relevant staff can make various changes and modifications without deviating from the technical idea of the utility model. The technical scope of the utility model is not limited to the contents in the specification, and the technical scope must be determined according to the scope of claims.
Claims
1. A sofa frame, characterized in that, The sofa iron frame comprises: a base (1); two telescopic mechanisms (2) symmetrically arranged on two sides of the base (1), each comprising a seat frame mounting plate (21) and a backrest assembly (22); wherein the seat frame mounting plate (21) is provided with a soft bag mounting position (211) for mounting a cushion soft bag (6), and the backrest assembly (22) is located at the rear side of the soft bag mounting position (211); a driving mechanism adapted to drive the sofa iron frame to change at least between a sitting position and a lying position; wherein during the change of the sofa iron frame from the sitting position to the lying position, the backrest assembly (22) moves forward relative to the seat frame mounting plate (21); and in the lying position, a clearance is left between the front end face of the backrest assembly (22) and the soft bag mounting position (211), and the width H of the clearance is not more than 20 mm.
2. The sofa iron frame of claim 1, wherein the backrest assembly (22) comprises a first linkage rod (221) and a second linkage rod (222); wherein the first linkage rod (221) is hinged to the seat frame mounting plate (21) at a first hinge point (41); the first linkage rod (221) is hinged to the second linkage rod (222) at a hinge point A; in the lying position, the hinge point A and the soft bag mounting position (211) form the clearance.
3. The sofa iron frame of claim 2, wherein the distance L between the first hinge point (41) and the soft bag mounting position (211) ranges from 65 mm to 95 mm.
4. The sofa iron frame of claim 2, wherein during the change of the sofa iron frame from the sitting position to the lying position, the forward movement distance M of the hinge point A ranges from 220 mm to 260 mm.
5. The sofa iron frame of claim 2, wherein in the sitting position, the included angle α between the straight line where the hinge point A and the first hinge point (41) are located and the mounting surface of the seat frame mounting plate (21) ranges from 55° to 75°.
6. The sofa iron frame of claim 2, wherein in the lying position, the included angle α between the straight line where the hinge point A and the first hinge point (41) are located and the mounting surface of the seat frame mounting plate (21) ranges from 25° to 45°.
7. The sofa iron frame of claim 2, wherein the backrest assembly (22) further comprises a third linkage rod (223) and an extension rod (224); wherein the extension rod (224) is fixedly connected to the seat frame mounting plate (21); the third linkage rod (223) is hinged to the extension rod (224) at a second hinge point (42), and the third linkage rod (223) is hinged to the second linkage rod (222) at a third hinge point (43); the lower end of the third linkage rod (223) is hinged to the bottom plate (5) through a bottom plate connecting rod (51); during the change of the sofa iron frame from the sitting position to the lying position, the seat frame mounting plate (21) moves forward relative to the bottom plate (5).
8. The sofa iron frame of claim 7, wherein The backrest assembly (22) further comprises a backrest plate (225) and a backrest connecting rod (226); wherein The front end of the backrest plate (225) is hinged with the second connecting rod (222) at a fourth hinge point (44), and the rear end of the backrest plate (225) is hinged with the third connecting rod (223) at a fifth hinge point (45) through the backrest connecting rod (226).
9. The sofa iron frame of claim 8, wherein When the sofa iron frame is transformed from the sitting position to the lying position, the backrest plate (225) is inclined backward at an angle β in the range of 25°-40°.
10. The sofa iron frame of claim 2, wherein The first connecting rod (221) is provided with a waist-shaped limiting hole (2211); The seat frame mounting plate (21) is provided with a limiting column (212) inserted into the waist-shaped limiting hole (2211).