CN213154918U

CN213154918U - Seat depth adjusting mechanism and seat thereof

Info

Publication number: CN213154918U
Application number: CN202021809562.8U
Authority: CN
Inventors: 孙文龙; 陈哲; 徐康; 杨润强
Original assignee: Zhejiang Hutong Ergonomics Technology Co Ltd
Current assignee: Zhejiang Hutong Ergonomics Technology Co Ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-05-11
Anticipated expiration: 2030-08-26

Abstract

The utility model relates to the technical field of seats, in particular to a seat depth adjusting mechanism; comprises a fixed seat, a sliding frame capable of axially reciprocating relative to the fixed seat and a locking assembly; the locking assembly comprises a lock pin and a handle, the lock pin and the handle are connected through a pull rope, the lock pin penetrates through a reset elastic piece and is movably connected to the side wall of the sliding frame, and two ends of the reset elastic piece are respectively abutted against the side wall of the sliding frame and the outer wall of the lock pin; the locking pin is placed in or pulled out of the fixed seat by stretching the handle, and when the locking pin is placed in the fixed seat, the adjusting assembly is locked and positioned relative to the fixed seat; the locking mode is simple and lighter than the weight of other locking assemblies, and is more favorable for transportation and assembly.

Description

Seat depth adjusting mechanism and seat thereof

Technical Field

The utility model relates to a seat technical field, concretely relates to seat depth adjustment mechanism and seat thereof.

Background

The seat is an indispensable furniture in modern life, and especially when modern people begin to pursue quality life, the seat has high requirements on various aspects such as comfort, convenience, adjustability and safety. However, in many existing chairs, particularly student chairs, the height of the chair seat of the chair can be adjusted, but the depth of the chair seat cannot be adjusted or the adjusted length is limited, and the chair seat cannot be adjusted to the most satisfactory depth according to the requirements of users. Especially for students, various aspects of a seat such as seat height, seat depth and back height largely determine the sitting posture of the student when the student uses the seat. Some health problems such as vertebra caused by poor sitting posture are not few in real life.

Therefore, research on the aspect of adjusting the depth of the chair seat is carried out, and researches show that the weight of the chair seat also influences the depth adjustment smoothness of the chair seat, at present, a pressing type adjusting assembly is adopted for adjusting a plurality of chair seats, the adjusting assembly is specifically a handle and a lock tooth is arranged at one end of the handle, the handle is enabled to be relatively overturned and unlocked by pressing the handle, and then the height or the depth of the chair seat is adjusted; however, the press-type structure has several significant problems: firstly, most of the adjusting components are made of sheet metal parts, and the whole weight is heavier, so that the installation is not facilitated; II, secondly: the fault tolerance rate of the structure is low, and the requirement on the degree of matching of parts is high; and thirdly, the seat cannot be hidden and is often exposed outside the seat, so that the situation that personnel are damaged by collision frequently occurs.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a dark adjustment mechanism of seat and seat that light in weight and fault-tolerant ratio are low.

To achieve the above object, the main technical solution of the present invention is a seat depth adjusting mechanism, which comprises a fixed seat, a sliding frame axially reciprocating relative to the fixed seat, and a locking assembly; the locking assembly comprises a lock pin and a handle, the lock pin and the handle are connected through a pull rope, the lock pin penetrates through a reset elastic piece and is movably connected to the side wall of the sliding frame, and two ends of the reset elastic piece are respectively abutted against the side wall of the sliding frame and the outer wall of the lock pin; the lock pin is placed in or pulled out of the fixed seat by stretching the handle, and when the lock pin is placed in the fixed seat, the adjusting component is locked and positioned relative to the fixed seat.

In some examples, the fixed seat comprises a guide part along the seat depth direction, a plurality of adjusting hole positions arranged along the sliding direction of the sliding frame are arranged on one side wall of the guide part, and the lock pin is positioned on one side of the adjusting hole positions; the lock pin is locked into the adjusting hole positions at different positions to realize the adjustment of different depths of the seat cushion.

In some examples, the guide is an inner tube, the carriage is a sleeve, and the sleeve is sleeved outside the inner tube; the side wall of the sleeve is provided with a through hole for one end of the adjusting piece to penetrate through, and the through hole passes through each adjusting hole position along with the sliding of the sleeve along the seat depth direction.

In some examples, the upper surface and the lower surface of the end part of the fixed seat are provided with a stop sleeve for preventing the sliding frame from moving excessively to be separated from the fixed seat.

In some examples, the upper side wall and the lower side wall of the fixed seat are provided with limiting sleeves which are used for facilitating the sliding of the sliding part relative to the fixed seat.

In some examples, the sliding frame is a sliding plate, sliding rails are arranged on two radial side walls of the guide part, and the sliding plate is erected on the sliding rails; the lock pin is movably connected to the side wall of the sliding plate on the same side of the adjusting hole position.

In some examples, the two sides of the sliding plate are folded to form a C-shaped edge covering, and the sliding rail is positioned in an inner cavity enclosed by the edge covering.

Still provide a seat, the seat include the supporting framework and the seat deep adjustment mechanism, the connection is fixed with the seat support on the carriage, the fixing base is connected on the supporting framework and can carry out the oscilaltion along the supporting framework.

In some examples, the seat comprises a lining plate, a chassis and a seat cushion, wherein the lining plate is fixedly connected to the sliding frame, and the seat cushion is fixedly connected to the lining plate; the base plate is fixedly connected with the bottom of the lining plate and forms an inner cavity, the pull rope and the lock pin are hidden in the inner cavity, and the handle penetrates out of the inner cavity and is exposed out of the front end of the chair seat

The utility model discloses owing to adopted above technical scheme to realize following effect:

firstly, the method comprises the following steps: the locking mode is simple, the weight is lighter than that of other locking assemblies, and the transportation and the assembly are facilitated;

II, secondly: on the basis of not complicated structure, the adjustment of different degrees of the seat depth can be effectively realized, and the stability is strong; the fault tolerance rate is low, and the requirement on the degree of adaptability is not high;

thirdly, the method comprises the following steps: the chair seat can be hidden in the chair seat, so that the collision of people caused by passing can be avoided; the safety and the aesthetic degree are improved.

Drawings

Figure 1 is a schematic structural view of an embodiment of the present invention,

figure 2 is a schematic view of a seat structure incorporating the seat depth adjusting mechanism according to the first embodiment,

figure 3 is a schematic view of the seat construction of figure 2,

figure 4 is a schematic view of the internal cross-sectional structure of the seat depth adjustment mechanism in combination with the seat,

figure 5 is a schematic view of another carriage and guide configuration,

in the figure: the locking device comprises a fixed seat 1, a fixed part 11, a guide part 12, an adjusting hole position 13, a locking assembly 2, a lock pin 21, a reset elastic piece 22, a pull rope 23, a handle 24, a lock seat 25, a sliding frame 3, a through hole 31, a cross beam 32, a beam arm 321, a U-shaped groove 322, a covered edge 33, a seat 4, a seat cushion 41, a lining plate 42, a chassis 43, a seat 5, a supporting framework 51, a limiting sleeve 6, a spigot sleeve 7 and a slide rail 8.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purpose of limitation.

It is to be understood that the terms "a" and "an" are to be interpreted as meaning that a number of one element may be one in one embodiment or multiple in another embodiment, and the terms "a" and "an" are not to be interpreted as limiting the number.

Implementing one step:

referring to fig. 1 to 5 of the drawings attached to the present specification, a seat depth adjusting mechanism according to a preferred embodiment of the present invention is illustrated, which includes a fixed seat 1, a carriage 3 capable of axially reciprocating with respect to the fixed seat 1, and a locking assembly 2; the locking assembly 2 comprises a lock pin 21 and a handle 24, the lock pin 21 and the handle 24 are connected through a pull rope 23, the lock pin 21 penetrates through a reset elastic piece 22 and is movably connected to the side wall of the sliding frame 3, and two ends of the reset elastic piece 22 are respectively abutted against the side wall of the sliding frame 3 and the outer wall of the lock pin 21; the lock pin 21 is placed in or pulled out of the fixed seat 1 by stretching the handle 24, and when the lock pin 21 is placed in the fixed seat 1, the adjusting component is locked and positioned relative to the fixed seat 1; the advantage of this solution is that, compared to the use of other locking assemblies 2, the locking is simple and lighter than the other locking assemblies 2, which is more convenient for transport and installation; and on the basis that the structure is not complicated, the adjustment of different degrees of the seat depth can be effectively realized, and the stability is strong.

Specifically, in this embodiment, the fixing base 1 includes a guiding portion 12 and a fixing portion 11 along a base depth direction, a side wall of the guiding portion 12 is provided with a plurality of adjusting holes 13 arranged along a sliding direction of the sliding frame 3, and the lock pin 21 is located on one side of the adjusting holes 13; the lock pin 21 is locked into the adjusting hole positions 13 at different positions to realize the adjustment of different depths of the seat cushion 41; the sliding frame 3 is slidably connected to the guide part 12, and the options of the sliding connection mode include two types: one of them is that the guide 12 is implemented as an inner tube, the carriage 3 is a sleeve, the sleeve is sleeved outside the inner tube, and the sleeve and the inner tube can slide relatively; in another alternative, the guiding part 12 is implemented as an inner pipe, the sliding frame 3 is a sliding plate, sliding rails 8 are laid on two side walls of the guiding pipe, and the sliding plate is erected on the sliding rails 8 and slides along the laying direction of the sliding rails 8; both the two modes have the advantages that the advantages are more obvious in the former mode, and the sleeve sleeving mode is more beneficial to ensuring that the sliding stability between the sliding frame 3 and the guide part 12 is higher in the sliding process; the center of gravity shift due to the sliding is prevented, and the carriage 3 and the guide portion 12 are prevented from derailing or breaking.

Taking the first way as an example, more specifically, a through hole 31 for one end of the adjusting member to penetrate through is formed in the side wall of the sleeve, the through hole 31 passes through each adjusting hole 13 along with the sleeve sliding in the seat depth direction, the locking assembly 2 further comprises a lock seat 25, the lock pin 21 penetrates through a resetting elastic member 22 and is installed in the lock seat 25, the lock seat 25 is connected and fixed on the side wall of the sleeve, and the lock pin 21 and the through hole 31 can be positioned on a coaxial line, one end of the resetting elastic member 22 abuts against the lock pin 21, the other end of the resetting elastic member abuts against the lock seat 25, and the lock pin 21 penetrates through the lock seat 25 and the through hole 31 and is placed in the adjusting hole 13; the sliding frame 3 comprises a frame body and two beams 32, connecting holes are formed in two ends of each beam 32, the seat 4 is fixedly connected to the sliding frame 3 through butt joint with the connecting holes, an inward-concave U-shaped groove 322 is formed in the center of each beam 32, the top of the frame body can be embedded into the U-shaped groove 322, beam arms 321 of the beams 32 are triangular, and the connecting strength between the seat 5 and the sliding frame 3 is enhanced; in addition, in order to prevent the sliding frame 3 from moving excessively to disengage from the fixed seat 1 and prevent the lifting sliding member from sliding smoothly relative to the fixed seat 1, in the embodiment, the upper and lower surfaces of the end portion of the guide portion 12 are provided with the stop sleeve 7 and the stop sleeve 6, the stop sleeve 7 is used for limiting the sliding frame 3 to slide only along the axial direction of the guide portion 12 and not to slide out of the fixed seat 1 on the guide portion 12, so that the displacement distance is limited and the sliding friction is reduced; the surface of the spigot sleeve 7, which is in contact with the inner wall of the sleeve, is provided with a plurality of convex blocks, the surface of each convex block is in contact with the inner wall of the sleeve to slide in the sliding process, and the convex blocks are used for reducing the contact area between the guide part 12 and the inner wall of the sleeve, so that the friction force is reduced, and the smoothness is improved; similarly, the limiting sleeve 6 is provided with a limiting column which can abut against the inner wall of the sleeve to limit the sliding frame 3 from moving excessively, so that the sliding frame 3 is prevented from being separated from the guide part 12.

Taking the second mode as an example, more specifically, the sliding frame 3 is a sliding plate, the two radial side walls of the guide part 12 are both provided with sliding rails 8, and the sliding plate is erected on the sliding rails 8; the lock pin 21 is movably connected to the side wall of the sliding plate on the same side of the adjusting hole position 13; the two sides of the sliding plate are turned over to form C-shaped edges 33, the sliding rails 8 are positioned in an inner cavity formed by the enclosing of the edges 33, the C-shaped edges 33 can better grasp and slide, and the sliding frame 3 and the guide part 12 are not tilted to derail due to gravity center shift caused by sliding; the four corner ends of the sliding plate are respectively provided with connecting holes, and the chair seat 4 is connected and fixed on the sliding plate through butt joint with the connecting holes.

In addition, this embodiment adopts the mode that the handle 24 is pulled and the stay cord 23 is drawn to pull out the lockpin 21 from the regulation hole site 13 and unlock, of course, in some other embodiments, the mode of plug-in can be adopted, that is, the handle 24 is connected with the lockpin 21 through the connecting rod, the lockpin 21 is pulled out from the regulation hole site 13 through pulling the handle 24, the principle and the pull-out are the same, and the structure is different.

Example two:

the embodiment provides a seat 5, where the seat 5 includes a supporting framework 51 and a seat depth adjusting mechanism according to the first embodiment, and the fixing portion 11 of the fixing seat 1 is sleeved on the supporting framework 51 and can be lifted up and down along the supporting framework 51; the sliding frame 3 is fixedly connected with a seat 4, the seat 4 comprises a lining plate 42, a chassis 43 and a seat cushion 41, the lining plate 42 is fixedly connected with the sliding frame 3, and the seat cushion 41 is fixedly connected with the lining plate 42; the chassis 43 is fixedly connected to the bottom of the lining plate 42 and forms an inner cavity, the pull rope 23 and the lock pin 21 are hidden in the inner cavity, and the handle 24 penetrates out of the inner cavity and is exposed out of the front end of the seat 4; because the weight of whole seat depth adjustment mechanism is light for the whole weight of this seat 5 is also comparatively light, and adopt pull formula simple structure be convenient for hide with in the seat 5, make the holistic pleasing to the eye promotion of seat 5.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention.

The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims

1. A seat depth adjusting mechanism is characterized by comprising a fixed seat (1), a sliding frame (3) which axially reciprocates relative to the fixed seat (1), and a locking assembly (2); the locking assembly (2) comprises a lock pin (21) and a handle (24), the lock pin (21) and the handle (24) are connected through a pull rope (23), the lock pin (21) penetrates through a resetting elastic piece (22) and is movably connected to the side wall of the sliding frame (3), and two ends of the resetting elastic piece (22) are respectively abutted against the side wall of the sliding frame (3) and the outer wall of the lock pin (21); the lock pin (21) is placed in or pulled out of the fixed seat (1) by stretching the handle (24), and when the lock pin (21) is placed in the fixed seat (1), the adjusting component is locked and positioned relative to the fixed seat (1).

2. The seat depth adjusting mechanism according to claim 1, wherein the fixed seat (1) comprises a guide portion (12) along the seat depth direction, a plurality of adjusting hole positions (13) arranged along the sliding direction of the sliding frame (3) are arranged on one side wall of the guide portion (12), and the lock pin (21) is positioned on one side of the adjusting hole positions (13); the lock pin (21) is locked into the adjusting hole positions (13) at different positions, so that the different depth adjustment of the seat cushion (41) is realized.

3. The seat depth adjusting mechanism according to claim 2, wherein the guide portion (12) is an inner tube, and the sliding frame (3) is a sleeve which is sleeved outside the inner tube; the side wall of the sleeve is provided with a through hole (31) for one end of the adjusting piece to penetrate through, and the through hole (31) passes through each adjusting hole position (13) along with the sliding of the sleeve along the seat depth direction.

4. Seat depth adjusting mechanism according to claim 1, characterized in that the upper and lower faces of the end of the fixed seat (1) are provided with a stop sleeve (7) for preventing the sliding seat (3) from moving excessively to be separated from the fixed seat (1).

5. The seat depth adjusting mechanism according to claim 1, wherein the upper and lower side walls of the fixed seat (1) are provided with a stop collar (6) for facilitating the sliding of the sliding member relative to the fixed seat (1).

6. The seat depth adjusting mechanism according to claim 2, wherein the sliding frame (3) is a sliding plate, sliding rails (8) are arranged on two radial side walls of the guide part (12), and the sliding plate is erected on the sliding rails (8); the lock pin (21) is movably connected to the side wall of the sliding plate on the same side of the adjusting hole position (13).

7. The seat depth adjusting mechanism according to claim 6, wherein the two sides of the sliding plate are folded to form C-shaped edges (33), and the sliding rail (8) is positioned in an inner cavity enclosed by the edges (33).

8. A chair, characterized in that the chair comprises a supporting framework (51) and the seat depth adjusting mechanism of any one of claims 1 to 7, a chair seat (4) is fixedly connected to the sliding frame (3), and the fixed seat (1) is connected to the supporting framework (51) and can be lifted up and down along the supporting framework (51).

9. The chair according to claim 8, wherein the seat (4) comprises a lining (42), a chassis (43) and a cushion (41), the lining (42) is fixedly connected to the sliding frame (3), and the cushion (41) is fixedly connected to the lining (42); the base plate (43) is fixedly connected with the bottom of the lining plate (42) and forms an inner cavity, the pull rope (23) and the lock pin (21) are hidden in the inner cavity, and the handle (24) penetrates out of the inner cavity and is exposed out of the front end of the seat (4).