Pressure sensing backrest adjusting mechanism of intelligent sofa

Abstract

According to the pressure sensing backrest adjusting mechanism of the intelligent sofa provided by the utility model, in the working process of the pressure sensing backrest adjusting mechanism of the intelligent sofa, a user sits on the sofa seat and leans against the sofa backrest. And the two electric spring pins are controlled by the controller to retract into the pin shaft. A user leans on the sofa backrest to drive the sofa backrest to rotate, when the sofa backrest rotates to a required angle, the controller controls the two electric spring pins to pop out the pin shafts, and the pin shafts can be inserted into the corresponding clamping holes after the sofa backrest is slightly moved, so that the relative positions of the sofa backrest and the sofa seat are fixed. The elastic supporting mechanism can elastically support the sofa backrest while rotationally connecting the sofa backrest and the bearing table, so that the rotating angle of the sofa backrest is effectively adjusted in combination with force applied by a user. The pressure sensing backrest adjusting mechanism of the intelligent sofa is good in accuracy of adjusting the angle of the backrest of the sofa, and the accurate requirement of a user can be met without multiple times of adjustment.

Description

Technical Field

[0001] The utility model relates to the field of intelligent sofas, in particular to a pressure-sensing backrest adjusting mechanism for intelligent sofas. Background Art

[0002] "Sofa" is a loanword, transliterated from the English word "sofa". A sofa is a multi-seat chair with cushions. A backrest chair equipped with springs or thick foam plastics, etc., with armrests on both sides, is a kind of soft furniture. Sofas have become essential furniture in many families. Generally, there are three types of sofas sold in the market: low-back sofas, high-back sofas, and ordinary sofas between the former two. Low-back sofas belong to lightweight chairs for rest. It uses one support point to support the user's waist. This kind of sofa has a relatively low backrest height, is relatively convenient and light to move, and occupies a small area. High-back sofas are also called aviation seats. Its characteristic is that it has three support points, allowing people's waists, shoulders, and the back of the head to lean on the curved backrest at the same time. Ordinary sofas are a common type among household sofas. Most of the sofas sold in the market are of this type. It has two support points to support the user's lumbar vertebra and thoracic vertebra, and can obtain the effect of a curved surface that matches the back of the body.

[0003] However, the backrests of sofas generally cannot be adjusted. To meet the needs of different people, sofas with adjustable backrest angles have emerged in the market. However, for traditional sofas with adjustable backrest angles, such as the technical solution disclosed in the patent with the application number CN202321068588.5 and the invention name of a sofa for conveniently adjusting the backrest angle, the method of adjusting the backrest angle has poor accuracy and requires multiple adjustments to meet the precise needs of users. Summary of the Utility Model

[0004] Based on this, in view of the technical problem that the method of adjusting the backrest angle of traditional sofas with adjustable backrest angles has poor accuracy and requires multiple adjustments to meet the precise needs of users, it is necessary to provide a pressure-sensing backrest adjusting mechanism for intelligent sofas.

[0005] A pressure-sensing backrest adjusting mechanism for an intelligent sofa, which includes: a sofa body, a clamping mechanism, and an elastic support mechanism;

[0006] The sofa body includes a sofa seat, a sofa backrest, a receiving platform, and two sofa armrests; one end of the sofa backrest is inserted into a rotating groove opened on the sofa seat and is rotatably connected to the sofa seat through a rotating shaft; the receiving platform is connected to one end of the sofa seat close to the sofa backrest; the two sofa armrests are respectively arranged on both sides of the sofa seat; fixed cavities are opened on both sides of the sofa backrest;

[0007] The clamping mechanism includes a controller, two electric spring pins, and two arc-shaped clamping plates; each of the electric spring pins is correspondingly arranged in a fixed cavity and connected to the sofa backrest; one end of each arc-shaped clamping plate is correspondingly connected to a sofa armrest, and the other end is connected to the receiving platform; a plurality of clamping holes are formed in each arc-shaped clamping plate, and the clamping holes are evenly arranged in an arc shape; the pin shaft of the electric spring pin is adapted to the clamping hole, and the pin shaft of the electric spring pin can be inserted into each clamping hole and clamped with the arc-shaped clamping plate; both of the two electric spring pins are electrically connected to the controller;

[0008] The elastic support mechanism is arranged between the sofa backrest and the receiving platform; two first rotating plates are arranged on one side of the sofa backrest close to the receiving platform, and two second rotating plates are arranged on the receiving platform; the elastic support mechanism includes a first rotating connection block, a sliding tube, a sliding block, a sliding cylinder, a compression spring, a sliding column, and a second rotating connection block; one end of the sliding tube is connected to the first rotating connection block, and the first rotating connection block is rotationally connected to the two first rotating plates through a rotating shaft; the end of the sliding tube far from the first rotating connection block is connected to the sliding block; a sliding hole is formed at one end of the sliding cylinder, and the sliding hole is adapted to the sliding tube, and the sliding tube is inserted into the sliding hole and slidably connected to the sliding cylinder; the sliding block is adapted to the sliding cylinder, and the sliding block is inserted into the sliding cylinder and slidably connected to the sliding cylinder; the sliding column is received in the sliding cylinder, one end of the sliding column is connected to the inner wall of the sealed end of the sliding cylinder, the sliding column is adapted to the sliding tube, and the sliding column is inserted into the sliding tube and slidably connected to the sliding tube; the compression spring is received in the sliding cylinder, one end of the compression spring abuts against the inner wall of the sealed end of the sliding cylinder, the other end of the compression spring abuts against the sliding block, and the compression spring is sleeved on the sliding column; the second rotating connection block is connected to the outer wall of the sealed end of the sliding cylinder, and the second rotating connection block is rotationally connected to the two second rotating plates through a rotating shaft.

[0009] In one embodiment, the controller is arranged on one sofa armrest.

[0010] In one embodiment, the sliding tube is of a cylindrical structure.

[0011] In one embodiment, the sliding column is of a cylindrical structure.

[0012] In one embodiment, the sliding block is of a cylindrical structure.

[0013] In one embodiment, the sliding cylinder is of a cylindrical structure.

[0014] In one embodiment, the first rotation connection block is in a cuboid structure.

[0015] In one embodiment, the second rotation connection block is in a cuboid structure.

[0016] In one embodiment, the first rotation connection block is in a cylinder structure.

[0017] In one embodiment, the second rotation connection block is in a cylinder structure.

[0018] During the working process of the pressure-sensing backrest adjustment mechanism of the above intelligent sofa, the user sits on the sofa seat and leans against the sofa backrest. The controller is used to control the two electric spring pins to retract the pin shafts. The user leans against the sofa backrest to drive the sofa backrest to rotate. When the sofa backrest rotates to the required angle, the controller is used to control the two electric spring pins to eject the pin shafts. After slightly moving the sofa backrest, the pin shafts can be inserted into the corresponding positioning holes, so as to fix the relative positions of the sofa backrest and the sofa seat. The elastic support mechanism can not only rotationally connect the sofa backrest and the receiving platform, but also elastically support the sofa backrest, so as to effectively adjust the rotation angle of the sofa backrest in combination with the force applied by the user. The pressure-sensing backrest adjustment mechanism of the above intelligent sofa has good accuracy in adjusting the angle of the sofa backrest and does not require multiple adjustments to meet the precise needs of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the pressure-sensing backrest adjustment mechanism of the intelligent sofa in one embodiment;

[0020] Figure 2 It is a schematic structural diagram of the elastic support mechanism in one embodiment;

[0021] Figure 3 It is a partial schematic structural diagram of another perspective of the pressure-sensing backrest adjustment mechanism of the intelligent sofa in one embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] To make the above objects, features, and advantages of the present utility model more apparent and understandable, the following describes the specific embodiments of the present utility model in detail with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below. In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0023] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0024] In the present utility model, unless otherwise clearly defined and limited, the terms "mounted", "connected", "connected to", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below", and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0026] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0027] Please refer to Figures 1 to 3 , the present utility model provides a pressure-sensing backrest adjustment mechanism 10 for an intelligent sofa. The pressure-sensing backrest adjustment mechanism 10 of the intelligent sofa includes: a sofa body 100, a clamping mechanism 200, and an elastic support mechanism 300.

[0028] The sofa body 100 includes a sofa seat 110, a sofa backrest 120, a receiving platform 130, and two sofa armrests 140. One end of the sofa backrest 120 is inserted into a rotating groove 101 opened on the sofa seat 110 and is rotatably connected to the sofa seat 110 through a rotating shaft. The receiving platform 130 is connected to one end of the sofa seat 110 close to the sofa backrest 120. The two sofa armrests 140 are respectively arranged on both sides of the sofa seat 110. Fixed cavities 102 are opened on both sides of the sofa backrest 120.

[0029] The clamping mechanism 200 includes a controller 210, two electric spring pins 220, and two arc-shaped clamping plates 230. Each electric spring pin 220 is correspondingly arranged in a fixed cavity 102 and is connected to the sofa backrest 120. One end of each arc-shaped clamping plate 230 is correspondingly connected to a sofa armrest 140, and the other end is connected to the receiving platform 130. A plurality of clamping holes 201 are opened on each arc-shaped clamping plate 230, and the clamping holes 201 are evenly arranged in an arc shape. The pin shaft of the electric spring pin 220 is adapted to the clamping hole 201, and the pin shaft of the electric spring pin 220 can be inserted into each clamping hole 201 and is clamped with the arc-shaped clamping plate 230. The two electric spring pins 220 are both electrically connected to the controller 210. In this embodiment, the controller 210 is arranged on a sofa armrest 140. It should be noted that the controller 210 is a PLC. In another embodiment, the controller 210 is a single-chip microcomputer. In other embodiments, the controller 210 includes a host computer and a slave computer, and the host computer is electrically connected to the slave computer.

[0030] The elastic support mechanism 300 is disposed between the sofa backrest 120 and the receiving platform 130. Two first rotating plates 121 are provided on the side of the sofa backrest 120 close to the receiving platform 130, and two second rotating plates 131 are provided on the receiving platform 130. The elastic support mechanism 300 includes a first rotating connection block 310, a sliding tube 320, a sliding block 330, a sliding cylinder 340, a compression spring 350, a sliding column 360, and a second rotating connection block 370. In this embodiment, the sliding tube 320 is a cylindrical structure. One end of the sliding tube 320 is connected to the first rotating connection block 310, and the first rotating connection block 310 is rotatably connected to the two first rotating plates 121 through a rotating shaft. In this embodiment, the first rotating connection block 310 is a cuboid structure. In another embodiment, the first rotating connection block 310 is a cylindrical structure. The end of the sliding tube 320 away from the first rotating connection block 310 is connected to the sliding block 330. In this embodiment, the sliding block 330 is a cylindrical structure. One end of the sliding cylinder 340 is provided with a sliding hole 301, and the sliding hole 301 is adapted to the sliding tube 320. The sliding tube 320 is inserted into the sliding hole 301 and is slidably connected to the sliding cylinder 340. The sliding block 330 is adapted to the sliding cylinder 340. The sliding block 330 is inserted into the sliding cylinder 340 and is slidably connected to the sliding cylinder 340. The sliding column 360 is received in the sliding cylinder 340. One end of the sliding column 360 is connected to the inner wall of the sealed end of the sliding cylinder 340. The sliding column 360 is adapted to the sliding tube 320. The sliding column 360 is inserted into the sliding tube 320 and is slidably connected to the sliding tube 320. In this embodiment, the sliding column 360 is a cylindrical structure. The compression spring 350 is received in the sliding cylinder 340. One end of the compression spring 350 abuts against the inner wall of the sealed end of the sliding cylinder 340, and the other end of the compression spring 350 abuts against the sliding block 330. The compression spring 350 is sleeved on the sliding column 360. In this embodiment, the sliding cylinder 340 is a cylindrical structure. The second rotating connection block 370 is connected to the outer wall of the sealed end of the sliding cylinder 340, and the second rotating connection block 370 is rotatably connected to the two second rotating plates 131 through a rotating shaft. In this embodiment, the second rotating connection block 370 is a cuboid structure. In another embodiment, the second rotating connection block 370 is a cylindrical structure.

[0031] During the operation of the pressure-sensing backrest adjustment mechanism 10 of the above-mentioned intelligent sofa, the user sits on the sofa seat 110 with the back against the sofa backrest 120. The controller 210 is used to control the two electric spring pins 220 to retract the pin shafts. The user leans against the sofa backrest 120 to drive the sofa backrest 120 to rotate. When the sofa backrest 120 rotates to the required angle, the controller 210 is used to control the two electric spring pins 220 to eject the pin shafts. After slightly moving the sofa backrest 120, the pin shafts can be inserted into the corresponding positioning holes 201, so as to fix the relative positions of the sofa backrest 120 and the sofa seat 110. The elastic support mechanism 300 can elastically support the sofa backrest 120 while playing a role in rotatably connecting the sofa backrest 120 and the receiving table 130, so as to effectively adjust the rotation angle of the sofa backrest 120 in combination with the force applied by the user. The pressure-sensing backrest adjustment mechanism 10 of the above-mentioned intelligent sofa has good accuracy in adjusting the angle of the sofa backrest 120 and does not require multiple adjustments to meet the precise needs of the user.

[0032] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0033] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A pressure-sensing backrest adjustment mechanism for a smart sofa, characterized in that: include: Sofa body, positioning mechanism and elastic supporting mechanism; The sofa body comprises a sofa seat, a sofa backrest, a receiving platform and two sofa armrests; one end of the sofa backrest is inserted into a rotating groove provided on the sofa seat and is rotatably connected to the sofa seat through a rotating shaft; the receiving platform is connected to one end of the sofa seat close to the sofa backrest; the two sofa armrests are respectively arranged on both sides of the sofa seat; both sides of the sofa backrest are provided with fixing cavities; The clamping mechanism comprises a controller, two electric spring pins and two arc-shaped clamping plates; each of the electric spring pins is correspondingly arranged in one of the fixing cavities and connected to the sofa backrest; one end of each of the arc-shaped clamping plates is correspondingly connected to one of the sofa armrests, and the other end is connected to the receiving platform; a plurality of clamping holes are provided on each of the arc-shaped clamping plates, and each of the clamping holes is evenly arranged in an arc shape; the pin shaft of the electric spring pin is adapted to the clamping hole, and the pin shaft of the electric spring pin can be inserted into each of the clamping holes and clamped to the arc-shaped clamping plate; the two electric spring pins are electrically connected to the controller; The elastic support mechanism is arranged between the sofa backrest and the receiving platform; two first rotating plates are arranged on one side of the sofa backrest close to the receiving platform, and two second rotating plates are arranged on the receiving platform; the elastic support mechanism includes a first rotating connection block, a sliding tube, a sliding block, a sliding cylinder, a compression spring, a sliding column and a second rotating connection block; one end of the sliding tube is connected to the first rotating connection block, and the first rotating connection block is rotatably connected to the two first rotating plates through a rotating shaft; the end of the sliding tube away from the first rotating connection block is connected to the sliding block; a sliding hole is opened at one end of the sliding cylinder, and the sliding hole is adapted to the sliding tube, and the sliding tube is inserted in the sliding hole and is slidably connected to the sliding cylinder The sliding block is adapted to the sliding cylinder, the sliding block is inserted in the sliding cylinder and is slidably connected to the sliding cylinder; the sliding column is accommodated in the sliding cylinder, one end of the sliding column is connected to the inner wall of the sealing end of the sliding cylinder, the sliding column is adapted to the sliding tube, the sliding column is inserted in the sliding tube and is slidably connected to the sliding tube; the compression spring is accommodated in the sliding cylinder, one end of the compression spring abuts against the inner wall of the sealing end of the sliding cylinder, the other end of the compression spring abuts against the sliding block, and the compression spring is sleeved on the sliding column; the second rotating connecting block is connected to the outer wall of the sealing end of the sliding cylinder, and the second rotating connecting block is rotatably connected to the two second rotating plates through a rotating shaft.

2. The pressure-sensing backrest adjustment mechanism of the smart sofa according to claim 1, characterized in that: The controller is arranged on one of the sofa armrests.

3. The pressure-sensing backrest adjustment mechanism of the smart sofa according to claim 1, characterized in that: The sliding tube is a cylindrical structure.

4. The pressure-sensing backrest adjustment mechanism of the smart sofa according to claim 1, characterized in that: The sliding column is a cylindrical structure.

5. The pressure-sensing backrest adjustment mechanism of the smart sofa according to claim 1, characterized in that: The sliding block is a cylindrical structure.

6. The pressure-sensing backrest adjustment mechanism of the smart sofa according to claim 1, characterized in that: The sliding cylinder is a cylindrical structure.

7. The pressure-sensing backrest adjustment mechanism of the smart sofa according to claim 1, characterized in that: The first rotating connecting block is a rectangular parallelepiped structure.

8. The pressure-sensing backrest adjustment mechanism of the smart sofa according to claim 1, characterized in that: The second rotating connecting block is a rectangular parallelepiped structure.

9. The pressure-sensing backrest adjustment mechanism of the smart sofa according to claim 1, characterized in that: The first rotating connecting block is a cylindrical structure.

10. The pressure-sensing backrest adjustment mechanism of the smart sofa according to claim 1, characterized in that: The second rotating connecting block is a cylindrical structure.

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