CN110584362A - Sitting and lying switching frame of sitting and lying seat - Google Patents

Abstract

The sitting and lying switch frame of a sitting and reclining seat according to the present invention is mainly composed of oblique pieces, horizontal pieces, side pieces and elastic locking pieces. The upper fulcrums of the part I and the oblique part II are rotatably connected with the front left and right side parts and the rear left and right side parts of the mobile pair combination respectively. When the sitting position is switched to the lying position, the person sits on the seat and operates the elastic locking part. Under the action of the backrest force and the body's gravity, it overcomes the constant force of the elastic locking part. The upper and lower fulcrums of the inclined part I and inclined part II simultaneously Pull it apart to move the front left and right side parts/seat parts forward, so that the contact area between the lower fulcrum and the ground is enlarged, and the lying position is stable. On the contrary, the switch from lying down to sitting is realized. Sit and lie switch stepless adjustment. The present invention adopts the method of reverse thinking and achieves the same effect as the three technical proposals with a simpler structure. Therefore: to create better conditions for alleviating the "all kinds of harms caused by sedentary sitting" and to bring "all kinds of benefits of afternoon nap" to various groups; to promote the realization of mass consumption.

Description

Sitting and lying switching frame for a sitting and lying seat

technical field

The present invention relates to the technical field of furniture, and specifically relates to a sit-and-reclining switch frame for a sit-and-recliner seat.

Background technique

The seat referred to in this article is a general term for chairs and sofas.

The patent number is ZL201721517914.0 "telescopic sitting and reclining office and study chair", the patent number is ZL201820336205.0 "a telescopic sitting and reclining chair" and the application number is 201910637925.X "a sitting and reclining chair". The three technical solutions of the "sitting and reclining switching mechanism for sitting and reclining" (hereinafter referred to as "the three technical solutions"), try to realize the popular consumption of sitting and reclining chairs, and change the use limitations of existing reclining chairs , to create conditions for efforts to alleviate the "all kinds of harms caused by sedentary sitting" and to create conditions for groups such as office workers and students to bring "all the benefits of afternoon naps". The main mechanisms of the seat frames of these three technical solutions are all parallelogram mechanisms, and all make full use of the movement characteristics of the parallelogram mechanisms to realize the sitting and lying switching of the seat under the cooperation of the locking device. In the process of switching from a sitting position to a lying position, when the center of gravity of the human body gradually moves backwards, there are auxiliary supports that move backwards to increase the contact area between the seat and the ground to ensure that the seat does not turn backwards and the lying position is stable. In the process of switching from the lying position to the sitting position, the back of the seat is turned forward, and the auxiliary support is then retracted forward, so as to ensure that the auxiliary support does not get in the way. This kind of seat has convenient, reliable, stepless adjustment and high-grade switching between sitting and lying down. When lying down, rest your feet on the ground.

There is a consensus in the design community that using the simplest possible structure to achieve the same product function and effect is a good design, and its product is a good product. This technical solution expects to try to reform the main body of the three technical solutions through another simpler structure/organization by applying the method of reverse thinking, so as to achieve the same product functions and effects of the three technical solutions, and even surpass them in some aspects It, complementing it, makes sitting and lying seats applicable to a wider range.

Contents of the invention

The main purpose of the present invention is to provide a sitting and lying switch frame for sitting and lying, which tries to adopt a reverse thinking method in the process of switching between sitting and lying, and tries to use another simpler structure/mechanism without using auxiliary In the case of supports, while expanding and reducing the contact area between the seat and the ground, the direction of the center of gravity of the human body moving backward and forward during the switching of sitting and lying of the three technical solutions is changed, and the center of gravity of the adult moves forward and backward, increasing the lying position The length ensures the stability and use of sitting and lying positions, achieves the same product functions and effects of the three technical solutions, and even surpasses it in some aspects, and complements it, making sitting and lying seats applicable to a wider range.

In order to achieve the above-mentioned main purpose, the present invention is achieved through the following technical solutions. The sitting and lying switching frame is mainly composed of oblique parts, horizontal parts, side parts and elastic locking parts. The oblique parts are oblique parts I and oblique parts II, and the horizontal parts are horizontal parts I and horizontal parts II. The oblique piece I is composed of the horizontal piece I, the left oblique piece I and the right oblique piece I, one end of the horizontal piece I is fixedly connected with the left oblique piece I, and the horizontal piece I The other end is fixedly connected to the right oblique piece I, the oblique piece II is composed of the horizontal piece II, the left oblique piece II and the right oblique piece II, one end of the horizontal piece II is connected to the The left oblique piece II is fixedly connected, the other end of the horizontal piece II is fixedly connected with the right oblique piece II, and the appropriate position of the left oblique piece I is connected with the appropriate position of the left oblique piece II Rotational connection, the appropriate position of the right oblique piece I and the appropriate position of the right oblique piece II are rotationally connected, through the rotational connection, the oblique piece I and the oblique piece II form a cross shape, Described side piece is left side piece I and right side piece I, and described left side piece I is made up of front left side piece I and rear left side piece I, and described front left side piece I and rear left side piece I forms the left moving kinematic pair, and described right side part I is made up of front right side part I and rear right side part I, and described front right side part I and rear right side part I form right moving kinematic pair, described One end of the rear left part I is rotatably connected with the upper end of the left slant part I, one end of the rear right part I is rotatably connected with the upper end of the right slant part I, and the front left side Part I is rotatably connected to the upper end of the left slanting part II, one end of the front right part I is rotatably connected to the upper end of the right slanting part II, and one end of the elastic locking part is connected to the On the proper position of the oblique piece I mentioned above, the other end of the elastic locking piece is connected to the proper position of the oblique piece II.

The length of the oblique piece I is the same as that of the oblique piece II, and the rotational connection position of the left oblique piece I and the left oblique piece II is the same as that of the right oblique piece I and the The swivel connection position of the right oblique piece II is the same.

The horizontal piece II of the oblique piece II is non-linear.

The elastic locking part is a controllable gas spring.

The controllable gas spring is provided with a damper.

A positioning piece is provided at a suitable position of the inclined piece.

A pulley is provided at a suitable part of the lower part of the sit-to-lie switch frame.

With the above-mentioned structure, the operation and action of the sit-to-recliner switch frame of the sit-to-recumbent seat are as follows.

In order to clearly describe its operation and action, assume: 1. sit and lie on the front left part I and the front right side part I of the switch frame to be provided with a seat part. ②The back assembly is connected with the sitting-lying switching frame in an appropriate way.

When sitting, the sitting and reclining seat is locked by a controllable gas spring. When the sitting and reclining seat is to be gradually switched from the sitting position to the lying position, the person sits on the seat and operates the control button I of the controllable gas spring, the controllable gas spring loses the locking force, but still has a constant force. The back leans against the back assembly, the back force and body weight overcome the constant force of the controllable gas spring, the back assembly gradually tilts back, and the upper fulcrums of the cross-shaped oblique piece I and oblique piece II are pulled apart and set on the front left side The seat part on the part 1 and the front right side part 1 translates downward when sliding forward. Simultaneously, the lower fulcrums of the inclined part I and the inclined part II are also pulled apart, which increases the contact area with the ground. When it needs to be locked at a certain position, the control button I of the controllable gas spring is operated, and the controllable gas spring restores the locking force, and the back assembly and the seat are locked at this position. When the inclined part is provided with a positioning part, when positioned by the positioning part, the back assembly is locked at the most inclined position by the controllable gas spring, and the seat part is locked at the lowest and frontmost position by the controllable gas spring. These linkages of the sitting-lying switching frame make the center of gravity of the human body move forward to the front position, the length of the lying position increases to the longest position, and the contact area with the ground increases to the maximum position, ensuring the stability and use of the lying position.

When the sitting and reclining seat is to be switched from the lying position to the sitting position, the person leaves the sitting and reclining seat and operates the control button, the controllable gas spring loses the locking force, and the sitting and reclining seat is pushed by a constant force to form a cross-shaped inclined part I and The upper fulcrum and the lower fulcrum of the inclined part II shrink inwardly, the back assembly swings forward and upward gradually, and the seat part moves backward and upward in translation and shrinks back, and the height gradually increases. When the seat reaches the highest point, operate the control button, the controllable gas spring restores the locking force, and the sitting and reclining seat returns to the sitting state. The sitting and reclining seat can be adjusted steplessly during the process of sitting and reclining. If the controllable gas spring is provided with a damper (such as a compression spring), the switch between sitting and lying becomes more stable. If a universal pulley is arranged under the switch frame for sitting and lying down, the seat can realize flexible universal movement.

To sum up, the present invention adopts the method of reverse thinking, with another more concise structure/mechanism, without using auxiliary supports, while expanding and reducing the contact area between the seat and the ground, the three technical solutions The backward and forward movement of the human body's center of gravity is changed to the opposite direction of the forward and backward movement of the human body's center of gravity. As a result, the length of the lying position is increased, the stability and use of the sitting and lying positions are ensured, and the same product functions and effects as the three technical solutions are achieved, even surpassing it in some aspects and complementing it, making the sitting and lying seat Applicable to a wider range. Therefore: ① Create better conditions for alleviating the "all kinds of harms caused by sedentary sitting" and create better conditions for office workers and students to bring "all kinds of benefits of afternoon nap"; ② Promote better sitting and lying chairs to achieve mass consumption.

Description of drawings

The best embodiment of the present invention will be described below in conjunction with the accompanying drawings.

Fig. 1 is a schematic diagram of a left view of a best implementation example of a sitting and lying switching frame of a sitting and reclining seat;

FIG. 2 is a schematic view along the direction A of FIG. 1 .

Detailed ways

The examples of the present invention will be described in detail below in conjunction with the accompanying drawings.

See Figures 1 and 2. In order to describe this example clearly, in Fig. 1 we will represent with double-dot-dash line A with the seat member relevant with sitting and lying switching frame, back assembly is represented with double-dot-dash line B. Double-dashed line C represents the state of this example when lying down. This example is mainly composed of oblique piece 1, horizontal piece 2, side piece 3 and elastic locking piece 4, oblique piece 1 is oblique piece I 1-1 and oblique piece II 2-1, horizontal piece 2 is horizontal piece I 1- 2 and horizontal piece II 2-2, oblique piece I 1-1 is composed of horizontal piece I 1-2, left oblique piece I 1-1-1 and right oblique piece I 2-1-1, horizontal piece I 1-2 It is the lower horizontal piece I 1-1-2 and the upper horizontal piece I 2-1-2 (shown in dotted line in Figure 1), one end of the lower horizontal piece I 1-1-2 and the left oblique piece I 1-1-1 The lower end is fixedly connected, the other end of the lower horizontal piece I 1-1-2 is fixedly connected with the lower end of the right oblique piece I 2-1-1, one end of the upper horizontal piece I 2-1-2 is connected with the left oblique piece I 1-1 The upper part of -1 is fixedly connected, the other end of the upper horizontal piece I 2-1-2 is fixedly connected with the upper part of the right oblique piece I 2-1-1, and the oblique piece II 2-1 is composed of the horizontal piece II 2-2, Composed of left oblique piece II 1-2-1 and right oblique piece II 2-2-1, the middle part of horizontal piece II 2-2 is concave, one end of horizontal piece II 2-2 and left oblique piece II 1-2-1 The lower end of the horizontal piece II 2-2 is fixedly connected with the lower end of the right oblique piece II 2-2-1, the length of the left oblique piece I 1-1-1 and the left oblique piece II 1-2-1 The same, the center position of the left oblique piece I 1-1-1 and the center position of the left oblique piece II 1-2-1 are rotationally connected, the length of the right oblique piece I 2-1-1 and the right oblique piece II2-2-1 are the same , the center position of the right oblique piece I 2-1-1 is rotationally connected with the central position of the right oblique piece II 2-2-1, through the rotational connection, the oblique piece I 1-1 and the oblique piece II 2-1 form a cross shape, Side piece 3 is left side piece I 1-3 and right side piece I 2-3, and left side piece I 1-3 is made up of front left side piece I 1-1-3 and rear left side piece I 2-1-3 , the front left part I 1-1-3 and the rear left part I 2-1-3 form a left moving motion pair, and the right part I 2-3 is composed of the front right part I 1-2-3 and the rear right side Part I 2-2-3 forms, and front right side part I 1-2-3 and rear right side part I 2-2-3 form right movement pair, and one end of rear left side part I 2-1-3 and left The upper end of the oblique piece I 1-1-1 is rotatably connected, one end of the rear right side I 2-2-3 is rotatably connected with the upper end of the right oblique piece I 2-1-1, and the front left side I 1-1-3 It is rotatably connected with the upper end of the left oblique piece II 1-2-1, one end of the front right side I 1-2-3 is rotatably connected with the upper end of the right oblique piece II 2-2-1, and the elastic locking piece 4 is controllable Gas spring 1-4, the damper 2-4 provided on the controllable gas spring 1-4 is a compression spring 1-2-4, and one end of the controllable gas spring 1-4 is movably connected to the middle part of the crosspiece II 2-2 In the lower recess, the other end of the controllable gas spring 1-4 is flexibly connected to the upper cross member I 2-1-2. Positioning pieces 5 are arranged on the left oblique piece I 1-1-1 and the right oblique piece I 2-1-1. Pulley 6 is a universal pulley 1-6, two universal pulleys 1-6 are connected on the lower cross member I 1-1-2, and another two universal pulleys 1-6 are connected on the cross member II 2-2. With the above structure, the example operation and actions of the sit-to-lay switch frame of the sit-to-lay seat are as follows.

When sitting, the sitting and reclining seat is locked by the controllable gas spring 1-4. When the sitting and reclining seat is to be gradually switched from the sitting position to the lying position, the person sits on the seat part A and operates the control button I (not shown in the figure) of the controllable gas spring 1-4, and the controllable gas spring 1-4 loses the lock Tight force, but also has a constant force. The back leans against the back component B, the back force and the body weight overcome the constant force of the controllable gas spring 1-4, the back component B gradually tilts backward, forming a cross-shaped oblique piece I 1-1 and oblique piece II 2-1 The upper fulcrum is pulled away, and the seat part A arranged on the front left part I 1-1-3 and the front right part I 1-2-3 slides forward and translates downward. Simultaneously, the lower fulcrums of the oblique piece I 1-1 and the oblique piece II 2-1 are also pulled apart, increasing the contact area with the ground. When needing to be locked in a certain position, operate the control button 1 of the controllable gas spring 1-4, the controllable gas spring 1-4 restores the locking force, and the back assembly B and the front seat part A are locked on this position. The positioning part 5 provided on the left oblique part I 1-1-1 and the right oblique part I 2-1-1 positions the back assembly B at the most inclined position, and positions the seat part A at the lowest lying position. Locked by controllable gas spring 1-4. These linkages of the sitting-lying switch frame move the center of gravity of the human body forward to the front position, the length of the lying position increases to the longest position, and the contact area with the ground increases to the maximum position, ensuring the stability and use of the lying position.

When switching the sitting and reclining seat from the lying position to the sitting position, the person leaves the sitting and reclining seat and operates the control button, the controllable gas spring 1-4 loses the locking force, and the sitting and reclining seat is pushed by a constant force to form a cross-shaped oblique The upper fulcrum and the lower fulcrum of part I 1-1 and oblique part II 2-1 shrink inwardly, the back component B swings forward and upward gradually, the seat part A translates and retracts backward and upward, and the height gradually increases. When the seat part A reaches the highest point, operate the control button, the controllable gas spring 1-4 restores the locking force, and the sitting and reclining seat returns to the sitting position. The compression spring 1-2-4 arranged on the controllable gas spring 1-4 makes the switching between sitting and lying down more stable. The four universal pulleys 1-6 arranged under the switch frame for sitting and lying realize the flexible universal movement of the seat. The sitting and reclining seat realizes the stepless adjustment of the position of the sitting and reclining seat through the sitting and reclining switch frame.

To sum up, the present invention adopts the method of reverse thinking, with another more concise structure/mechanism, without using auxiliary supports, while expanding and reducing the contact area between the seat and the ground, the three technical solutions The backward and forward movement of the human body's center of gravity is changed to the opposite direction of the forward and backward movement of the human body's center of gravity, increasing the length of the lying position. Thus, the stability and use of the sitting and lying positions are guaranteed, and the same product functions and effects of the three technical solutions are achieved, and even surpass it in some aspects, complementing it, so that the sitting and lying seats are applicable to a wider range. Therefore: ① Create better conditions for alleviating the "all kinds of harms caused by sedentary sitting" and create better conditions for office workers and students to bring "all kinds of benefits of afternoon nap"; ② Promote better sitting and lying chairs to achieve mass consumption.

Claims (7)

1. A sitting and lying switching frame of sitting and lying furniture mainly comprises an inclined piece, a transverse piece, a side piece and an elastic locking piece, and is characterized in that the inclined piece (1) comprises an inclined piece I (1-1) and an inclined piece II (2-1), the transverse piece (2) comprises a transverse piece I (1-2) and a transverse piece II (2-2), the inclined piece I (1-1) comprises the transverse piece I (1-2), a left inclined piece I (1-1-1) and a right inclined piece I (2-1-1), one end of the transverse piece I (1-2) is fixedly connected with the left inclined piece I (1-1-1), the other end of the transverse piece I (1-2) is fixedly connected with the right inclined piece I (2-1-1), and the inclined piece II (2-1) comprises the transverse piece II (2-2), A left inclined part II (1-2-1) and a right inclined part II (2-2-1), wherein one end of the transverse part II (2-2) is fixedly connected with the left inclined part II (1-2-1), the other end of the transverse part II (2-2) is fixedly connected with the right inclined part II (2-2-1), the proper position of the left inclined part I (1-1-1) is rotatably connected with the proper position of the left inclined part II (1-2-1), the proper position of the right inclined part I (2-1-1) is rotatably connected with the proper position of the right inclined part II (2-2-1), the inclined part I (1-1) and the inclined part II (2-1) are crossed through the rotary connection, and the side part (3) is a left side part I (1-3) and a right side part I (2-3), the left side part I (1-3) consists of a front left side part I (1-1-3) and a rear left side part I (2-1-3), the front left side part I (1-1-3) and the rear left side part I (2-1-3) form a left moving kinematic pair, the right side part I (2-3) consists of a front right side part I (1-2-3) and a rear right side part I (2-2-3), the front right side part I (1-2-3) and the rear right side part I (2-2-3) form a right moving kinematic pair, one end of the rear left side part I (2-1-3) is rotationally connected with the upper end of the left inclined part I (1-1-1), one end of the rear right side part I (2-2-3) is rotationally connected with the upper end of the right inclined part I (2-1-1) The upper ends of the front left part I (1-1-3) and the left inclined part II (1-2-1) are rotatably connected, one end of the front right part I (1-2-3) is rotatably connected with the upper end of the right inclined part II (2-2-1), one end of the elastic locking part (4) is connected to the proper position of the inclined part I (1-1), and the other end of the elastic locking part (4) is connected to the proper position of the inclined part II (2-1).

2. The sit-lie switch rack of the sit-lie seat of claim 1, wherein the length of the incline I (1-1) is the same as that of the incline II (2-1), and the rotational connection position of the left incline I (1-1-1) and the left incline II (1-2-1) is the same as that of the right incline I (2-1-1) and the right incline II (2-2-1).

3. The sit-lie switch frame of the sit-lie seat according to claim 1, wherein the cross member II (2-2) of the inclined member II (2-1) is non-linear.

4. The sitting and lying switching frame of sitting and lying furniture according to claim 1, characterized in that the elastic locking piece (4) is a controllable gas spring (1-4).

5. The sitting and lying switching frame of sitting and lying furniture according to claim 1, characterized in that the controllable gas spring (1-4) is provided with a damper (2-4).

6. The sitting and lying switching frame of sitting and lying furniture according to claim 1, characterized in that a positioning piece (5) is arranged at a proper position of the inclined piece (1).

7. The sitting and lying switching frame of sitting and lying furniture according to claim 1, characterized in that a pulley (6) is arranged at a proper position of the lower part of the sitting and lying switching frame.