CN111513505A

CN111513505A - Linear telescopic supporting mechanism and furniture

Info

Publication number: CN111513505A
Application number: CN202010446236.3A
Authority: CN
Inventors: 倪良正; 张叙俊; 毛立; 孙杰; 邱裕峰; 高宏杰; 杜修兵
Original assignee: Zhejiang Sunon Furniture Manufacturing Co Ltd
Current assignee: Zhejiang Sunon Furniture Manufacturing Co Ltd
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2020-08-11

Abstract

The invention discloses a linear telescopic supporting mechanism and furniture, wherein the linear telescopic supporting mechanism comprises a first supporting seat, a second supporting seat and a clamping mechanism, wherein the first supporting seat and the second supporting seat are mutually sleeved and are in sliding connection; a furniture comprises a first furniture component, a second furniture component and the linear telescopic supporting mechanism, wherein the first furniture component and the second furniture component are rotatably connected, and the linear telescopic supporting mechanism is connected between the first furniture component and the second furniture component; the invention has the advantages of low cost, high modularization degree, wide application range, simple and rapid assembly and improved production efficiency; the switch is not required to be controlled, and the operation is convenient and quick; the self-modeling is realized, and the aesthetic feeling is better; the gears are more, and when the chair back is adjusted to incline on the chair, the chair is more comfortable to use; when the table top is used for adjusting the inclination of the table top on the table, the angle is more, and the adaptability to different people is stronger.

Description

Linear telescopic supporting mechanism and furniture

Technical Field

The invention relates to the field of furniture, in particular to a linear telescopic supporting mechanism and furniture.

Background

In modern life, adjustable furniture is becoming more popular in order to meet different requirements of people, seats are being taken as examples: although the science and technology liberates the physical labor, people get involved in mental labor of long-time sitting on a desk, the number of groups of long-time sitting in China is increased continuously, the positions of the buttocks of the people in the long-time sitting can be adjusted continuously to ensure the comfort of sitting, and when a user works, the user sits in the front two thirds position of the seat cushion most of the time, and the waist and the back of the user can not be supported by the backrest. With the increase of people, various age-incompatible waist diseases caused by sedentary behaviors are generated.

There is therefore a need for a chair: the chair enables the waist of a user to be comfortably supported and a correct back posture to be maintained, particularly when the user is seated at the front of the chair with his back spaced from the back of the chair.

The chinese utility model patent of cn201820253966.x discloses a chair with adjusting function is leaned on to waist, including the back of the chair, seat support and footing, be equipped with the cavity on the back of the chair, upper portion in the cavity is installed the supporter through lifting the device of rolling over, it includes fixing base and linking arm to lift the device of rolling over, be equipped with the fixed arm on the fixing base, fixed arm and linking arm are articulated, and through the fixed synchronization motion of rigid connection piece with two at least linking arms, the fixing base is fixed with the back of the chair, rigid connection piece is fixed with the supporter. The chair back is provided with the cavity, the supporting piece is arranged in the cavity, the chair back is hinged with the folding device, and the pawl and the ratchet wheel are used for positioning and supporting, so that the lumbar support adjustment of the chair back is realized. According to the invention, the back load is supported by the ratchet mechanism arranged in the ratchet mechanism, the connection between the two arms of the ratchet mechanism and the chair back component is weak, the supporting capability is influenced, the assembly is difficult, and the ratchet mechanism is not suitable for modularized assembly production.

Disclosure of Invention

In order to solve the technical problem, the invention provides a linear telescopic supporting mechanism, which comprises a first supporting seat, a second supporting seat and a clamping mechanism, wherein the first supporting seat and the second supporting seat are sleeved with each other, the clamping mechanism is arranged between the first supporting seat and the second supporting seat, the first supporting seat and the second supporting seat can slide relative to each other, and the clamping mechanism keeps the positions of the first supporting seat and the second supporting seat after relative movement; further provided is a piece of furniture, comprising a first furniture component, a second furniture component and the linear telescopic supporting mechanism, wherein the first furniture component and the second furniture component can generate relative rotation, and the linear telescopic supporting mechanism is connected between the first furniture component and the second furniture component.

The technical scheme of the invention is realized as follows:

a linear telescopic supporting mechanism comprises a first supporting seat and a second supporting seat which are sleeved together, wherein the first supporting seat is connected with the second supporting seat in a sliding manner; a clamping mechanism is arranged between the first supporting seat and the second supporting seat; the clamping mechanism comprises a plurality of clamping grooves distributed along the sliding direction and elastic clamping tongues in clamping fit with the clamping grooves; when the first supporting seat and the second supporting seat slide relatively, the clamping tongue switches positions between the clamping grooves; when the clamping tongue is clamped and matched with the corresponding clamping groove, the first supporting seat and the second supporting seat are relatively fixed.

The telescopic supporting mechanism of the invention realizes the telescopic adjustment of the first supporting seat and the second supporting seat on the premise of linear motion, keeps the first supporting seat and the second supporting seat relatively fixed at a locking position, and further can realize the relative movement between two parts connected with the first supporting seat and support the two parts to keep the two parts in a state after the relative movement, so that the two parts keep different states or relative positions.

Preferably, the clamping mechanism further comprises a rack and a spring, the clamping grooves are formed in the same surface of the rack and distributed along the length direction of the rack, and the clamping tongue rotates around a pivot and keeps the trend of clamping with the clamping grooves under the action of the spring. The first support seat and the second support seat relatively slide along the length direction of the rack, and the stroke is long; the spring acts on the clamping tongue all the time, so that the first supporting seat and the second supporting seat are kept at the position after relative sliding, namely the first supporting seat and the second supporting seat have supporting capacity.

Preferably, the clamping mechanism further comprises a tongue seat, the clamping tongue is connected to the tongue seat, and the tongue seat is connected with the pivot; the rack comprises a clamping tooth section, a plurality of clamping teeth are distributed on the clamping tooth section along the length direction, and a clamping groove is formed between every two clamping teeth; along the length direction, the two ends of the rack at the clamping tooth section are respectively provided with a clamping tongue jacking and holding section and a rotary boss; along the thickness direction of the rack, the heights of the clamping tongue jacking and holding section and the rotary boss are both greater than the height of the clamping tooth section. The latch has a supporting effect in the latch section, the latch rotating angle is larger than that in the latch section when the latch jacks up the holding section, and the latch is locked in an open state through the matching of the limiting part and the locking latch, so that the latch temporarily loses the clamping supporting effect with the clamping groove.

Preferably, the height of the clamping tongue jacking and holding section in the thickness direction of the rack is lower than that of the rotary boss. The latch is locked and kept in the open state separated from the clamping groove when the latch jacks up the holding section, and can directly cross over the latch section to reach the rotary boss, and at the moment, the latch can be jacked back to restore the supporting effect only when the rotary boss is higher than the latch jack-up holding section.

Preferably, the clamping mechanism further comprises a limiting piece, a locking tongue matched with the limiting piece is further arranged on the tongue seat, when the locking tongue is located at the clamping tooth section, the locking tongue is in clamping fit with the clamping groove at the corresponding position, and the limiting piece does not limit the locking tongue; when the clamping tongue abuts against the clamping tongue jacking and maintaining section, the clamping tongue rotates towards the direction leaving the clamping groove, the limiting piece locks the locking tongue and enables the clamping tongue to maintain the unlocking state of being disengaged from the clamping groove, and when the first supporting seat and the second supporting seat move relatively, the limiting piece crosses over the clamping tooth section and touches the rotary boss, so that the clamping tongue rotates reversely to be clamped with the clamping groove, and the locking tongue is disengaged from the limiting piece. The clamping groove is matched with the clamping groove at the corresponding position, and at the moment, the first supporting seat and the second supporting seat can be continuously and relatively separated but can not be relatively jointed, so that the supporting purpose is achieved; after the first supporting seat and the second supporting seat move relatively, the clamping tongue can be clamped with different clamping grooves, so that the back supporting piece is supported and kept at a corresponding position by the supporting and adjusting mechanism; the clamping tongue jacks up the holding section to enable the clamping tongue to excessively rotate, and the limiting piece can lock the locking tongue, so that the first supporting seat and the second supporting seat can be sleeved and folded again but cannot be supported; the rotary boss can unlock the locked clamping tongue, so that the rotary boss is clamped with the clamping groove again, the supporting capability of the first supporting seat and the second supporting seat is recovered, on-off control is not needed, the operation is labor-saving and convenient, and the structure is ingenious.

Preferably, the locking tongue and the limiting part are staggered all the time, and when the locking tongue rotates, the locking tongue goes over the limiting part through elastic deformation and is abutted to the limiting part to be locked or is separated from the limiting part to be unlocked. The locking mode is simple and effective, an independent mechanism is not needed for locking the clamping tongue, the tongue seat and the locking tongue, and cost and assembly time are saved.

Preferably, at least one of the limiting member and the locking tongue is an elastic member.

Preferably, the first supporting seat is a hollow sleeve, the first supporting seat is in sleeve fit with the second supporting seat, and the rack is fixedly arranged in the first supporting seat; the clamping tongue, the tongue seat, the spring and the limiting piece are arranged on the second supporting seat. The first supporting seat realizes the sleeve joint of the first supporting seat and the second supporting seat for the hollow sleeve.

Preferably, the limiting member is a plate-shaped body which is fixedly mounted on the second supporting seat, and one end of the limiting member is suspended to form a limiting part matched with the locking tongue. When the limiting piece locks the clamping tongue, the limiting part props against the locking tongue to resist the elastic force of the spring.

Preferably, the spring is a torsion spring, the tongue base is rotatably connected with the second support base through a pivot, the torsion spring is sleeved on the pivot, the first torsion arm and the second support base of the torsion spring are kept relatively fixed, and the second torsion arm of the torsion spring acts on the tongue base. The torsion spring is used for returning the clamping tongue, so that the clamping tongue can be clamped with the corresponding clamping groove all the time after the first supporting seat and the second supporting seat move relatively.

A piece of furniture comprises a first furniture component, a second furniture component and a linear telescopic supporting mechanism, wherein the first furniture component and the second furniture component can rotate relatively, a first supporting seat is connected to one of the first furniture component and the second furniture component, and a second supporting seat is connected to the other of the first furniture component and the second furniture component. The first and second supports enable the first and second furniture members to have different relative positions, thereby achieving different functions.

Preferably, the first support seat and the second support seat have a rotation shaft or a rotation shaft hole at one end thereof, the first support seat is rotatably connected to one of the first and second furniture members, and the second support seat is rotatably connected to the other of the first and second furniture members.

Preferably, the furniture is a table or a chair.

The design starting point, the idea and the beneficial effects of the invention adopting the technical scheme are as follows:

the invention has the beneficial effects that:

1. the invention provides a novel design of a linear motion-based telescopic supporting mechanism, which can keep a first supporting seat and a second supporting seat at corresponding positions through telescopic motion between the first supporting seat and the second supporting seat which are sleeved together, can be used as independent components for production, processing and manufacturing, can be assembled in furniture with corresponding requirements, can realize different functions of the furniture by changing the relative positions of certain two components on the furniture, and meets different use requirements; that is, by applying the telescopic support mechanism, it is possible to change the relative position between the two members and also to support the two members to maintain the position therebetween at that time, and the furniture can obtain different states and functions by the different relative positions of the two members.

2. The mechanism is low in cost, high in modularization degree, wide in application range, simple and fast to assemble and beneficial to improvement of installation efficiency.

3. The mechanism has self-locking capability by the clamping matching of the clamping tongue and the clamping groove, so that a control switch is not needed, and the operation is convenient and quick.

4. The external shape of the mechanism can be designed according to different occasions and installation environments, and the mechanism is suitable for furniture of different types and styles so as to improve the attractiveness.

5. The mechanism is similar to a ratchet wheel in a clamping and matching mode, and compared with other mechanisms with springs matched with bolts on the market, the mechanism has more gears in the same stroke, is better in use comfort when used for adjusting the inclination of a chair back on a chair, has more angles when used for adjusting the inclination of a table top on a table, and has stronger adaptability to different crowds; the latch compares cylinder bolt, and the contact surface when the joint is wideer, and support performance is just also better, and the structure is more firm.

Drawings

FIG. 1 is a first perspective view of a support adjustment assembly according to the present invention in embodiment 1;

FIG. 2 is a schematic perspective view of a support adjustment assembly according to embodiment 1 of the present invention;

FIG. 3 is a third perspective view of the supporting and adjusting assembly of embodiment 1 of the present invention;

fig. 4 is a schematic perspective view of a locking structure of a locking tongue and a locking groove in embodiment 1 of the present invention;

fig. 5 is a sectional view of the support regulating member of the present invention in embodiment 1 with the latch tongue positioned at the primary card slot;

FIG. 6 is an enlarged view of portion B of FIG. 5;

FIG. 7 is a sectional view of the supporting and adjusting member of the present invention in embodiment 1, when the latch is engaged with the slot;

FIG. 8 is an enlarged view of portion C of FIG. 7;

FIG. 9 is a sectional view of a support adjusting unit after a locking tongue is locked by a stopper in embodiment 1 of the present invention;

FIG. 10 is an enlarged view of portion D of FIG. 9;

FIG. 11 is a sectional view of the support adjustment assembly of the present invention with the latch being backed by a surface of revolution in accordance with example 1;

FIG. 12 is an enlarged view of section E of FIG. 11;

fig. 13 is an exploded view one of the support adjustment assembly of the present invention in example 1;

fig. 14 is an exploded view of the support adjusting assembly of the present invention in embodiment 1;

fig. 15 is a first schematic perspective view illustrating a rack and a second support seat according to embodiment 1 of the present invention;

fig. 16 is a second schematic perspective view illustrating a rack and a second support seat according to embodiment 1 of the present invention;

FIG. 17 is a side view of the back support and support adjustment assembly of the present invention in example 1;

FIG. 18 is a schematic perspective view of the entire learning table of embodiment 2 of the present invention;

FIG. 19 is a sectional view of a body, a tilting table and a support adjustment assembly according to the present invention in embodiment 2;

fig. 20 is a cross-sectional view showing a case where the rear end of the inclined table is lifted and inclined in embodiment 2 of the present invention.

The figures are numbered: a back support 1; a back support 2; a support adjustment assembly 101; a first support 102; a second support seat 103; a rack 104; a latch tongue 105; a card slot 106; a pivot 107; a torsion spring 108; a latch section 109; a latch 110; a self-locking face 111; a sliding surface 112; a tongue base 113; a locking tongue 114; an elastic sheet 115; a stopper portion 116; a latch jack-up retention section 117; a swivel boss 118; a jacking surface 119; a last stage card slot 120; a surface of revolution 121; a primary card slot 122; a first torsion arm 123; a second torque arm 124; a tip 129; an upper surface 130; a lower surface 131; a side 132; a torsion spring mounting hole 133; pivot mounting holes 134; a chute 135; a stop block 136; a limit chute 137; a tongue mount mounting groove 138; a pivot hole 139; a chute 140; a body 141; tilt table 142; an upper support ear 143; a lower support ear 144; an avoidance slot 145; a spindle hole 146; a rotating shaft 147.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, the term "at least one" means one or more than one unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The specific embodiment of the invention is as follows:

example 1: the linear telescopic supporting mechanism of the invention is mainly applied to the field of furniture, namely, is connected between two furniture components to realize a supporting function when in application, in the embodiment, a seat is taken as furniture for example, and a first furniture component and a second furniture component are a back bracket 1 and a back support 2 respectively; the following is a detailed description of the linear telescopic support mechanism of the present invention and its application:

as shown in fig. 1-3 and 17, a linear telescopic supporting mechanism of the present invention includes a first supporting seat 102, a second supporting seat 103 and a clamping mechanism disposed between the first supporting seat and the second supporting seat, wherein the first supporting seat 102 and the second supporting seat 103 are slidably connected and the clamping mechanism keeps the position of the first supporting seat 102 and the position of the second supporting seat 103 after relative movement; the chair comprises a back support 1 and a back support 2 which is arranged at the front side of the back support 1 and is configured to support the waist and the back of a human body; the upper end of the back support piece 2 is rotatably connected with the upper end of the back support frame 1, the first support seat and the second support seat are arranged between the back support piece 2 and the back support frame 1, and the first support seat and the second support seat generate relative movement when the back support piece 2 is opened and closed and change the inclination angle relative to the horizontal plane; this mechanism is a telescopic tube assembly in this embodiment and will be referred to as a support adjustment assembly 101 which acts to support the back support 2 on the chair for back load support.

As shown in fig. 1-4, 13 and 14, specifically, the first supporting seat 102 is a hollow sleeve, the first supporting seat 102 is sleeved outside the second supporting seat 103, and when the first supporting seat 102 and the second supporting seat 103 slide relatively, the supporting and adjusting assembly 101 makes a telescopic motion; further, as shown in fig. 1 and 2, one end of each of the first supporting seat 102 and the second supporting seat 103 is configured with a rotating shaft hole 146, in this embodiment, as shown in fig. 17, the second supporting seat 103 is rotatably connected to the back bracket 1 through a rotating shaft 147, and the first supporting seat 102 is rotatably connected to the back supporting member 2 through the rotating shaft 147 and can slide along the second supporting seat 103; the first support seat 102 and the second support seat 103 are positioned through a clamping mechanism after moving relatively, specifically, the clamping mechanism comprises a rack 104, a clamping tongue 105 and a spring, a plurality of clamping grooves 106 are distributed on the rack 104 along the length direction, and the clamping tongue 105 rotates around a pivot 107 and keeps the trend of clamping with the clamping grooves 106 under the action of the spring; in this embodiment, the spring is a torsion spring 108; the latch mechanism serves a primary function of enabling the prop adjuster assembly 101 to have self-locking capability of the prop adjuster assembly 2 when the lumbar back portion is leaning back on the back support 2, i.e., the prop adjuster assembly self-locks after being extended and refuses to retract in response to a force applied to the back support.

More specifically, as shown in fig. 3-8, 13 and 14, the rack 104 is installed in the first support seat 102 and fixed by screws, and includes a latch section 109, a plurality of latches 110 are distributed on the latch section 109 along the length direction, a slot 106 is formed between every two latches 110, the latches 110 are right-angled trapezoidal, the latches 110 include sliding surfaces 112 and self-locking surfaces 111 perpendicular to the relative movement direction of the first and second support seats, the sliding surfaces 112 are inclined with respect to the self-locking surfaces 111, the included angle between the two is an acute angle, and the sliding surfaces 112 on the same latch 110 are more forward with respect to the self-locking surfaces 111; the latch 105 is in a triangular prism shape and comprises a tip 129, the tip 129 of the latch 105 is clamped into the slot 106 and is in clamping fit with the slot 106, when the back of the waist leans against the back support 2 backwards, the support adjusting assembly 101 has a contraction tendency, that is, the first support seat 102 has a tendency of moving backwards relative to the second support seat 103, at the moment, the self-locking surface 111 abuts against the tip 129 of the latch 105, and the latch 105 prevents the first support seat 102 from moving backwards, that is, self-locking of the support adjusting assembly 101 during contraction is completed; when the back support member 2 is pulled to open by one stage, the support adjusting assembly 101 extends by one stage, that is, the first support seat 102 moves forward by one stage relative to the second support seat 103, and in the process, the sliding surface 112 slides relative to the latch tongue 105 until the latch tongue 105 is latched into the next latch groove; each stage of the back support 2 opening corresponds to one clamping groove 106; the description of this paragraph is shown more clearly in fig. 5-8.

As shown in fig. 4 and 13-16, the latch mechanism further includes a tongue base 113 and a limiting member, the latch 105 is connected to the tongue base 113, the tongue base 113 is sleeved on the pivot 107, the tongue base 113, the latch 105 and the torsion spring 108 are disposed on the second support base 103, and the torsion spring 108 is sleeved on the pivot 107; the tongue seat 113 is provided with a torsion spring mounting hole 133 which radially penetrates through the tongue seat 113 and a pivot mounting hole 134 which axially penetrates through the tongue seat 113, after the torsion spring 108 is mounted in the torsion spring mounting hole 133 and aligned with the pivot mounting hole 134, the pivot 107 is inserted into the pivot mounting hole 134 and the torsion spring 108, the first torsion arm 123 and the second torsion arm 124 of the torsion spring 108 respectively extend out of two sides of the torsion spring mounting hole 133 and abut against the inner wall of the torsion spring mounting hole 133, the first torsion arm 123 and the second support seat 103 of the torsion spring 108 are relatively fixed, and the second torsion arm 124 of the torsion spring 108 acts on the tongue seat 113, so that the tongue seat 113 can restore to the initial position after rotating around the pivot 107; when the support adjusting assembly 101 is extended, the tip 129 of the latch 105 slides on the sliding surface 112, the latch base 113 rotates accordingly, the first torsion arm 123 leaves the inner wall of the torsion spring mounting hole 133, the second torsion arm 124 is lifted by the inner wall of the torsion spring mounting hole 133, the torsion spring 108 stores energy, and when the tip 129 of the latch 108 passes through the self-locking surface 111, the second torsion arm 124 of the torsion spring 108 resets the latch base 113, and the tip 129 of the latch 105 is latched in the latch groove 106.

The tongue base 113 is further provided with a locking tongue 114 matched with the limiting member, the locking tongue 114, the tongue base 113 and the clamping tongue 105 are integrally formed, and in the embodiment, an included angle of 130 degrees is formed between the locking tongue 114 and the clamping tongue 105; in this embodiment, the limiting member is a plate-shaped elastic sheet 115 fixed on the second support seat 103, the elastic sheet 115 and the locking tongue 114 are always in a staggered state, and one end of the elastic sheet 115 is suspended to form a limiting portion 116 engaged with the locking tongue 114.

As shown in fig. 13-16, the second supporting seat 103 is substantially a rectangular body, and has an upper surface 130, a lower surface 131 and two side surfaces 132, the rear portion of the rack 104 is provided with a limiting block 136, the lower surface 131 is upwardly provided with a sliding slot 135 for the rack 104 to slide, and the sliding slot 135 is upwardly provided with a limiting sliding slot 137 for the limiting block 136 to slide, the limiting sliding slot 137 is matched with the limiting block 136 to limit the sliding stroke of the first supporting seat 102 on the second supporting seat 103, i.e. the telescopic stroke of the supporting adjustment assembly 101; the second support seat 103 is provided with a tongue seat mounting groove 138 for mounting the tongue seat 113 and a pivot hole 139 penetrating the tongue seat mounting groove 138 on the side surface 132 along the width direction, the torsion spring 108 is firstly placed in the torsion spring mounting hole 133 of the tongue seat 113, then the torsion spring 108 and the tongue seat 113 are placed in the tongue seat mounting groove 138 together, the torsion spring 108, the pivot mounting hole 134 and the pivot hole 139 are aligned, and finally the pivot 107 is inserted into the three; an inclined groove 140 for mounting the elastic piece 115 is opened in the upper surface 130 behind the tongue seat mounting groove 138, and the elastic piece 115 is fixed in the inclined groove 140 by screws.

As shown in fig. 5 to 14, the rack 104 is formed with a latch jack-up holding section 117 and a rotation boss 118 at both ends of the latch section 109 along the length direction; along the thickness direction of the rack 104, the heights of the clamping tongue jacking and holding section 117 and the rotary boss 118 are both greater than the height of the clamping tooth section 109, and the height of the rotary boss 118 is greater than the height of the jacking and holding section; the latch lifting and holding section 117 comprises a lifting surface 119 parallel to the sliding surface 112, and a final clamping groove 120 is formed between the lifting surface 119 and the last clamping tooth 110 of the clamping tooth section 109; the rotary boss 118 comprises a rotary surface 121 parallel to the self-locking surface 111, and a primary slot 122 is formed between the rotary surface 121 and the first latch 110 of the latch section 109; when the latch tongue 105 is located on the latch section 109, the latch tongue 105 is in clamping fit with the corresponding position of the latch groove 106, and the limiting part 116 of the elastic sheet 115 does not limit the locking tongue 114; when the tip 129 of the latch tongue 105 relatively moves backwards from the last-stage card slot 120, the tip 129 abuts against the jacking surface 119 of the latch tongue jacking and holding section 117 to enable the latch tongue 105 to rotate towards the direction away from the card slot 106, the locking tongue 114 rotates along with the latch tongue 105, passes over the limiting part 116 of the elastic piece 115 and abuts against the elastic piece 115 to be locked, and the latch tongue 105 is enabled to keep the unlocking state of being disengaged from the card slot 106; at this time, the tip 129 of the latch 105 crosses over the latch section 109 when the support adjusting assembly 101 contracts, the tip 129 of the latch 105 touches the revolution surface 121 of the revolution boss 118, the latch 105 is urged to rotate reversely to be latched with the primary latch groove 122, and the locking latch 114 also rotates reversely to pass through the elastic piece 115 and disengage from the limiting part 116 of the elastic piece 115.

As shown in fig. 17, from back to front, the supporting and adjusting assembly 101 is inclined upward between the back support 1 and the back support member 2, and when the lower end of the back support member 2 moves forward, the included angle between the whole supporting and adjusting assembly 101 and the horizontal plane becomes smaller, so that the effective supporting force of the supporting and adjusting assembly 101 to the back support member 2 is larger, and the structure is more stable.

Example 2: in the present embodiment, a learning table is taken as an example of furniture, as shown in fig. 18, the learning table includes an inclined table board 142, a body 141, and the supporting and adjusting assembly 101 in embodiment 1, wherein the first furniture component and the second furniture component are the body 141 and the inclined table board 142, respectively; the internal structure and the working principle of the supporting seat adjusting assembly 101 are unchanged.

As shown in fig. 19 and 20, the front end of the inclined table 142 is rotatably connected to the front end of the main body 141 through a pin, the supporting and adjusting assembly 101 is disposed between the main body 141 and the inclined table 142, the first supporting seat 102 is rotatably connected to the inclined table 142 through an upper supporting lug 143, and the second supporting seat 103 is rotatably connected to the main body 141 through a lower supporting lug 144; an avoiding groove 145 for carrying is formed in the middle position of the rear end of the inclined table 142, when a user lifts the rear end of the inclined table 142 at the avoiding groove 145, the inclined table 142 forms a corresponding inclination angle with the horizontal plane, the first support base 102 slides away from the second support base 103 along with the rotation of the inclined table 142, and the support adjusting assembly 101 extends and supports the inclined table 142 to maintain the current inclination angle.

Claims

1. The utility model provides a linear flexible supporting mechanism which characterized in that: the support device comprises a first support seat and a second support seat which are sleeved together, wherein the first support seat is connected with the second support seat in a sliding manner; a clamping mechanism is arranged between the first supporting seat and the second supporting seat; the clamping mechanism comprises a plurality of clamping grooves distributed along the sliding direction and elastic clamping tongues in clamping fit with the clamping grooves; when the first supporting seat and the second supporting seat slide relatively, the clamping tongue switches positions between the clamping grooves; when the clamping tongue is clamped and matched with the corresponding clamping groove, the first supporting seat and the second supporting seat are relatively fixed.

2. The linear telescoping support mechanism of claim 1, wherein: the clamping mechanism also comprises a rack and a spring, the clamping grooves are arranged on the same surface of the rack and distributed along the length direction of the rack, and the clamping tongue rotates around a pivot and keeps the trend of clamping with the clamping grooves under the action of the spring.

3. The linear telescopic support mechanism according to claim 2, wherein: the clamping mechanism also comprises a tongue seat, the clamping tongue is connected on the tongue seat, and the tongue seat is connected with the pivot; the rack comprises a clamping tooth section, a plurality of clamping teeth are distributed on the clamping tooth section along the length direction, and a clamping groove is formed between every two clamping teeth; along the length direction, the two ends of the rack at the clamping tooth section are respectively provided with a clamping tongue jacking and holding section and a rotary boss; along the thickness direction of the rack, the heights of the clamping tongue jacking and holding section and the rotary boss are both greater than the height of the clamping tooth section.

4. The linear expansion support mechanism according to claim 3, wherein: the height of the clamping tongue jacking and maintaining section along the thickness direction of the rack is lower than that of the rotary boss.

5. The linear expansion support mechanism according to claim 3, wherein: the clamping mechanism also comprises a limiting piece, a locking tongue matched with the limiting piece is further arranged on the tongue seat, when the clamping tongue is positioned on the clamping tooth section, the clamping tongue is in clamping fit with the clamping groove at the corresponding position, and the limiting piece does not limit the locking tongue; when the clamping tongue abuts against the clamping tongue jacking and maintaining section, the clamping tongue rotates towards the direction leaving the clamping groove, the limiting piece locks the locking tongue and enables the clamping tongue to maintain the unlocking state of being disengaged from the clamping groove, and when the first supporting seat and the second supporting seat move relatively, the limiting piece crosses over the clamping tooth section and touches the rotary boss, so that the clamping tongue rotates reversely to be clamped with the clamping groove, and the locking tongue is disengaged from the limiting piece.

6. The linear expansion support mechanism according to claim 5, wherein: the locking tongue and the limiting part are staggered all the time, and when the locking tongue rotates, the locking tongue crosses the limiting part through elastic deformation and is abutted with the limiting part to be locked or is separated from the limiting part to be unlocked.

7. The linear expansion support mechanism according to claim 5, wherein: at least one of the limiting piece and the locking tongue is an elastic piece.

8. The linear expansion support mechanism according to claim 5, wherein: the first supporting seat is a hollow sleeve, the first supporting seat is in sleeve fit with the second supporting seat, and the rack is fixedly arranged in the first supporting seat; the clamping tongue, the tongue seat, the spring and the limiting piece are arranged on the second supporting seat.

9. The linear expansion support mechanism according to claim 5, wherein: the limiting piece is a plate-shaped body and is fixedly arranged on the second supporting seat, and one end of the limiting piece is suspended to form a limiting part matched with the locking tongue.

10. The linear expansion support mechanism according to claim 3, wherein: the spring is a torsion spring, the tongue seat is rotatably connected with the second supporting seat through a pivot, the torsion spring is sleeved on the pivot, the first torsion arm of the torsion spring and the second supporting seat are relatively fixed, and the second torsion arm of the torsion spring acts on the tongue seat.

11. An article of furniture, characterized by: comprising a first furniture member, a second furniture member and a linear telescopic support mechanism according to any of claims 1 to 10, the first and second furniture members being relatively rotatable with respect to each other, the first support base being connected to one of the first and second furniture members and the second support base being connected to the other of the first and second furniture members.

12. The piece of furniture of claim 11, wherein: one end of each of the first support seat and the second support seat is provided with a rotating shaft or a rotating shaft hole, the first support seat is rotatably connected to one of the first furniture member and the second furniture member, and the second support seat is rotatably connected to the other of the first furniture member and the second furniture member.

13. The piece of furniture of claim 11, wherein: the furniture is a table or a chair.