seat pan

Abstract

The application discloses a seat chassis, which comprises a chassis, a movable tail wing and a spring assembly, the chassis is provided with a placing space, the spring assembly is arranged in the placing space in an inclined manner, the spring assembly comprises a fixed elastic end and a movable elastic end, the fixed elastic end is in abutment with the chassis, the movable tail wing is installed on the chassis through a movable supporting point, one end of the movable tail wing is in abutment with the movable elastic end, and the other end serves as a backrest connecting end; the seat chassis has the advantages that the backrest is directly connected with the movable tail wing and the inclination angle of the backrest itself is independently adjusted through the movable tail wing and the spring assembly, the angle of the backrest is large, and the higher comfort requirement of the user is met; in addition, even if the user presses the backrest to make the backrest flip back to a larger angle, the seat can be relatively fixed (in position) while the backrest is flipped back, the whole chair is prevented from being flipped back and falling down, meanwhile, the chassis provides a working space for the spring assembly through the placing space, and the stable working of the spring assembly is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of seats, in particular to a seat chassis. BACKGROUND

[0002] The existing seat chassis, see Chinese utility model patent, patent number: 2020229100102, name: a spring mounting structure for a seat chassis, authorized announcement date: January 11, 2017, its structure includes a spring reset device arranged in the chassis, the spring reset device includes a group of interval arranged springs, the spring is mounted between the bracket and the base of the chassis and the spring is vertically arranged; an upper partition plate is arranged between the upper end of the spring and the bracket, and a lower partition plate is arranged between the lower end of the spring and the base; the upper end of the spring abuts against the upper partition plate, and the lower end of the spring abuts against the lower partition plate; the bracket and the base are hingedly connected, and during the rotation of the bracket around the base, the spring produces corresponding elastic deformation and is limited between the upper and lower partition plates; the spring is pressed between the upper and lower partition plates, so that the structure is more stable; and the spring and the bracket are separated by the upper and lower partition plates, and the spring and the base are separated by the upper and lower partition plates; the noise generated by the friction between the spring and the metal part when the spring deforms can be effectively avoided; the use experience of the user is fully considered, and the design is more humanized; in the above-mentioned seat chassis, the seat chassis includes a base connected with a gas rod and a bracket connected with a seat, the seat can be adjusted in reclining, and the backrest is connected with the seat, so that the seat is adjusted in reclining, and the backrest is also adjusted in reclining.

[0003] The spring mounting structure of the above-mentioned prior art seat chassis still has the following disadvantages: (1) the backrest can only be adjusted in angle by moving forward with the seat, so the backrest does not have an independent angle adjusting mechanism, and cannot meet the higher comfort angle requirements of the user for the backrest; (2) if the user presses the backrest backward with the body to adjust the backward angle of the backrest, since the backrest and the seat are in linkage, the seat will also be tilted backward synchronously when the backrest is tilted backward, which is easy to cause the whole chair to be tilted backward, and has a safety hazard. SUMMARY

[0004] The purpose of the present application is to solve the above-mentioned problems of the prior art, and to provide a seat chassis which can independently adjust the backrest, meet the higher comfort of the user, and improve the safety in use.

[0005] The purpose of the present application is achieved in that:

[0006] The seat chassis comprises a chassis, a movable tail wing and a spring assembly, characterized in that: the chassis is provided with a mounting space, the spring assembly is arranged in the mounting space in an inclined manner, the spring assembly comprises a fixed elastic end and a movable elastic end, the fixed elastic end is in abutment with the chassis, the movable tail wing is mounted on the chassis through a movable supporting point, one end of the movable tail wing is in abutment with the movable elastic end, and the other end serves as a backrest connecting end; the seat chassis has the advantages that one end of the movable tail wing is connected with the spring assembly, the other end serves as the backrest connecting end, the backrest is directly connected with the movable tail wing and independently adjusts the inclination angle of the backrest through the movable tail wing and the spring assembly, the inclination angle of the backrest is large, and the higher comfort requirement of a user is met; in addition, even if the user presses the backrest to make the backrest tilt backward to a larger angle, since the backrest and the seat are respectively connected to the chassis and the movable tail wing, namely, the backrest tilts backward while the seat is relatively fixed (in position), the whole chair cannot be overturned backward, the safety of the chair is greatly improved, meanwhile, the chassis provides a working space for the spring assembly through the mounting space, and the stable working of the spring assembly is ensured.

[0007] The object of the present application can also be solved by the following technical measures:

[0008] In particular, the mounting space is an inclined groove at the bottom of the chassis, the spring assembly is fixed in the inclined groove, and the spring assembly extends from the fixed elastic end to the movable elastic end in a direction from top to bottom.

[0009] In particular, the spring assembly further comprises a spring fixing shaft and a spring, the spring is sleeved on the spring fixing shaft, and the two ends of the spring fixing shaft extend into the fixed elastic end and the movable elastic end respectively, the two ends of the spring are in abutment with the fixed elastic end and the movable elastic end respectively, the fixed elastic end is fixedly connected with the inner wall of the inclined groove, and the movable elastic end is movably connected with the movable tail wing.

[0010] In particular, the fixed elastic end comprises a fixed plate, one end of the spring is in abutment with the front end of the fixed plate, a fixed connection shaft extends outward from the center of the front end of the fixed plate, a fixed connection hole is formed in the fixed connection shaft, and one end of the spring fixing shaft is inserted into the fixed connection hole. This shape of the fixed elastic end has the advantages that the fixed connection shaft and the fixed connection hole at the center of the front end of the fixed plate are easy to be connected with the spring fixing shaft, the spring is sleeved on the fixed connection shaft and then abuts against the front end of the fixed plate, the spring is sleeved and abuts at the same time, and the stability is high.

[0011] Specifically further, the fixed plate rear end extends out a fixed clamping jaw, the inner wall of the inclined slot is provided with a fixed connecting column, and the fixed clamping jaw clamps the fixed connecting column; during installation, the fixed clamping jaw is easily clamped on the fixed connecting column, and the connection is stable.

[0012] Specifically further, the elastic movable end comprises a movable plate, the rear end of the movable plate abuts against the other end of the spring, the center of the rear end of the movable plate extends out a movable connecting shaft, a movable connecting hole is formed in the movable connecting shaft, and the other end of the spring fixing shaft is inserted into the movable connecting hole; the rear end of the elastic movable end of this shape, the movable connecting shaft and the movable connecting hole at the center thereof are easily connected with the spring fixing shaft, the elastic movable end is convenient to assemble and disassemble, and the one end of the spring is first sleeved on the movable connecting shaft, and then the spring is pressed by the movable plate, so that the spring is sleeved and abutted, and the stability is high.

[0013] Specifically further, the rear end of the movable tail wing extends out a pushing arm, the pushing arm is provided with a pushing arm shaft connecting hole, the front end of the movable plate extends out a movable clamping jaw, a circular gap is formed in the movable clamping jaw, the pushing arm shaft is inserted into the pushing arm shaft connecting hole and supported on the circular gap of the movable clamping jaw; the pushing arm shaft serves to connect the pushing arm and the movable plate, so that when the pushing arm rotates, the movable clamping jaw can be pushed through the pushing arm shaft connecting hole and the pushing arm shaft, and then the movable plate is pushed to compress the spring, and the structure is simple and the connection is simple.

[0014] Specifically further, the movable supporting point is a rotating shaft, the rotating shaft is fixed at the front end of the pushing arm, the outer end of the rotating shaft penetrates through the side wall of the bottom disc, and the rear end of the pushing arm is provided with the pushing arm shaft connecting hole; the rotating shaft is used to realize the rotation of the movable tail wing on the base, and the rotating shaft is used as the supporting point, so that the movable tail wing is easily installed on the bottom disc, and the process is simple.

[0015] Specifically further, the pushing arm extends downward, a locking hole is further formed in the middle part of the pushing arm, a locking shaft switch penetrates through the bottom disc made of plastic and extends into the locking hole, and the included angle between the pushing arm 21 and the spring assembly 3 is between 80 degrees and 145 degrees; the included angle between the spring and the pushing arm is beneficial to easy resetting of the spring, reduction of elastic fatigue of the spring, improvement of the service life of the spring, and improvement of the uniform and comfortable degree of backrest pressure and leaning; in addition, the downward extending pushing arm is convenient for the pushing arm to better act on the elastic movable end when the movable tail wing rotates; the locking shaft switch can realize the function of locking the pushing arm, so that the movable tail wing is kept at the rotating angle required by the user and does not rotate any more; in addition, the bottom disc made of plastic has the advantages of low cost, strong plasticity and better appearance.

[0016] Specifically further, two symmetrical said inclined grooves are arranged on the bottom of the chassis, and the spring assembly is arranged on each inclined groove, and the movable tail wing is provided with a push arm matched with the spring assembly corresponding to the position of the two inclined grooves; the elastic adjusting force of the two groups of spring assemblies is larger, can meet more use requirements of users, and the implementation effect is better.

[0017] The beneficial effects of the present application are as follows:

[0018] (1) The one end of the movable tail wing is connected with the spring assembly, and the other end is used as a backrest connecting end. The backrest is directly connected with the movable tail wing and independently adjusts the inclination angle of the backrest through the movable tail wing and the spring assembly. The backrest adjusting angle is large, and the higher comfort requirement of users is met. In addition, even if the user presses the backrest to make the backrest flip back to a larger angle, since the backrest and the seat are connected to the chassis and the movable tail wing respectively, that is, the backrest flips back while the seat is relatively fixed (position), the overall chair is ensured not to flip back and fall, the safety of the chair in use is greatly improved, and meanwhile, the chassis provides a working space for the spring assembly through the installation space, so that the stable work of the spring assembly is ensured.

[0019] (2) The spring assembly is inclined from top to bottom, which can prevent the spring assembly from arching when being deformed under pressure. In addition, in the case of the same spring assembly, the inclined spring assembly occupies less space of the chassis (inclined groove), so that the overall size of the base can be reduced.

[0020] (3) The front end of the elastic fixing end of this shape is easy to be connected with the fixed connection shaft and the fixed connection hole at the center thereof, which is convenient to assemble and disassemble. In addition, the one end of the spring is first sleeved on the fixed connection shaft and then abuts against the front end of the fixed plate, so that the spring has both sleeving and abutting, and the stability is high.

[0021] (4) The push arm shaft serves to connect the push arm and the movable plate, so that when the push arm rotates, the movable clamping jaw can be pushed through the push arm shaft connecting hole and the push arm shaft, and then the movable plate is pushed to compress the spring. The structure is simple and easy to connect.

[0022] (5) The elastic adjusting force of the two groups of spring assemblies is larger, can meet more use requirements of users, and the implementation effect is better. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic view of the seat chassis of the present application.

[0024] Figure 2 It is a sectional view of the seat chassis of the present application.

[0025] Figure 3 It is an exploded view of the seat chassis of the present application.

[0026] Figure 4This is a perspective view of the chassis of the present invention.

[0027] Figure 5 This is a three-dimensional enlarged view of the elastic movable end of the present invention. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0029] Implementation examples, in conjunction with Figures 1 to 5 As shown, a seat chassis includes a chassis 1, a movable tail wing 2, and a spring assembly 3. The chassis 1 has a mounting space 11, and the spring assembly 3 is inclinedly positioned within the mounting space 11. The spring assembly 3 includes an elastic fixed end 31 and an elastic movable end 32. The elastic fixed end 31 abuts against the chassis 1. The movable tail wing 2 is mounted on the chassis 1 via a movable fulcrum 4. One end of the movable tail wing 2 abuts against the elastic movable end 32, and the other end serves as a backrest connection end.

[0030] As a specific solution, the placement space 11 is an inclined groove at the bottom of the chassis 1, the spring assembly 3 is fixed in the inclined groove, and the spring assembly 3 extends from the elastic fixed end 31 to the elastic movable end 32 in a downward direction.

[0031] In this embodiment, the spring assembly 3 further includes a spring fixing shaft 33 and a spring 34. The spring 34 is sleeved on the spring fixing shaft 33, and both ends of the spring fixing shaft 33 extend into the elastic fixed end 31 and the elastic movable end 32, respectively. Both ends of the spring 34 abut against the elastic fixed end 31 and the elastic movable end 32, respectively. The elastic fixed end 31 is fixedly connected to the inner wall of the inclined groove, and the elastic movable end 32 is movably connected to the movable tail fin 2.

[0032] In this embodiment, the elastic fixing end 31 includes a fixing plate 311. The front end of the fixing plate 311 abuts against one end of the spring 34. A fixing connecting shaft 312 extends outward from the center of the front end of the fixing plate 311. A fixing connecting hole 313 is opened on the fixing connecting shaft 312. One end of the spring fixing shaft 33 is inserted into the fixing connecting hole 313. A fixing claw 314 extends from the rear end of the fixing plate 311. A fixing connecting post 12 is provided on the inner wall of the inclined groove. The fixing claw 314 clamps the fixing connecting post 12.

[0033] In this embodiment, the elastic movable end 32 includes a movable plate 321. The rear end of the movable plate 321 abuts against the other end of the spring 34. A movable connecting shaft 322 extends outward from the center of the rear end of the movable plate 321. A movable connecting hole 323 is opened on the movable connecting shaft 322. The other end of the spring fixing shaft 33 is inserted into the movable connecting hole 323.

[0034] As a better implementation, the arm shaft 5 is further included, the arm 21 is extended from the rear end of the movable tail wing 2, the arm shaft connecting hole 22 is arranged on the arm 21, the movable clamping jaw 324 is extended from the front end of the movable plate 321, the circular notch 325 is opened on the movable clamping jaw 324, the arm shaft 5 is inserted into the arm shaft connecting hole 22 and supported on the circular notch 325 of the movable clamping jaw 324.

[0035] As a specific scheme, the movable fulcrum 4 is a rotating shaft, the rotating shaft is fixed at the front end of the arm 21, the outer end of the rotating shaft penetrates through the side wall of the chassis 1, the rear end of the arm 21 is provided with the arm shaft connecting hole 22, the arm 21 extends downward, the middle part of the arm 21 is further provided with the locking hole 23, the locking shaft switch 6 penetrates through the chassis 1 made of plastic and extends into the locking hole 23, and the included angle between the arm 21 and the spring assembly 3 is between 80 degrees and 145 degrees.

[0036] As a better implementation, the bottom of the chassis 1 is provided with two symmetrical inclined grooves, the spring assembly 3 is arranged on each inclined groove, and the arm 21 matched with the spring assembly 3 is arranged on the movable tail wing 2 corresponding to the positions of the two inclined grooves.

[0037] Working principle: the backrest connecting end on the movable tail wing 2 is connected with the backrest of the seat, the user presses the backrest, drives the movable tail wing 2 to rotate along the movable fulcrum 4, so that the arm 21 on the movable tail wing 2 rotates and pushes the elastic movable end 32 to compress the spring 34, when the user needs to keep the backrest at a certain angle, the locking shaft switch 6 is extended into the locking hole 23 of the arm 21, so that the arm 21 is locked and cannot rotate any more.

Claims

1. A seat pan comprising a pan (1), a movable tail fin (2) and a spring assembly (3), characterized in that: The bottom plate (1) is provided with a setting space (11), the spring assembly (3) is arranged in the setting space (11) in an inclined manner, the spring assembly (3) comprises a fixed elastic end (31) and a movable elastic end (32), the fixed elastic end (31) is in abutment with the bottom plate (1), the movable tail wing (2) is installed on the bottom plate (1) through a movable support point (4), one end of the movable tail wing (2) is in abutment with the movable elastic end (32), and the other end serves as a backrest connecting end. The setting space (11) is an inclined groove at the bottom of the bottom plate (1), the spring assembly (3) is fixed in the inclined groove, and the spring assembly (3) extends from the fixed elastic end (31) to the movable elastic end (32) in a direction from top to bottom.

2. The seat pan of claim 1, wherein: The spring assembly (3) further comprises a spring fixing shaft (33) and a spring (34), the spring (34) is sleeved on the spring fixing shaft (33), both ends of the spring fixing shaft (33) extend into the fixed elastic end (31) and the movable elastic end (32) respectively, and both ends of the spring (34) are in abutment with the fixed elastic end (31) and the movable elastic end (32) respectively.

3. The seat pan of claim 2, wherein: The fixed elastic end (31) comprises a fixed plate (311), one end of the spring (34) is in abutment with the front end of the fixed plate (311), a fixed connection shaft (312) extends outward from the center of the front end of the fixed plate (311), a fixed connection hole (313) is formed in the fixed connection shaft (312), and one end of the spring fixing shaft (33) is inserted into the fixed connection hole (313).

4. The seat pan of claim 3, wherein: The rear end of the fixed plate (311) extends out a fixed clamping jaw (314), and the inner wall of the inclined groove is provided with a fixed connection column (12), and the fixed clamping jaw (314) clamps the fixed connection column (12).

5. The seat pan of claim 2, wherein: The movable elastic end (32) comprises a movable plate (321), the other end of the spring (34) is in abutment with the rear end of the movable plate (321), a movable connection shaft (322) extends outward from the center of the rear end of the movable plate (321), a movable connection hole (323) is formed in the movable connection shaft (322), and the other end of the spring fixing shaft (33) is inserted into the movable connection hole (323).

6. The seat pan of claim 5, wherein: A dial arm shaft (5) is further included, the rear end of the movable tail wing (2) extends outwardly to form a dial arm (21), the dial arm (21) is provided with a dial arm shaft connecting hole (22), the front end of the movable plate (321) extends out a movable clamping jaw (324), a circular notch (325) is formed in the movable clamping jaw (324), and the dial arm shaft (5) is inserted into the dial arm shaft connecting hole (22) and supported on the circular notch (325) of the movable clamping jaw (324).

7. The seat pan of claim 6, wherein: The movable support point (4) is a rotating shaft, the rotating shaft is fixed at the front end of the dial arm (21), the outer end of the rotating shaft penetrates through the side wall of the bottom plate (1), and the rear end of the dial arm (21) is provided with the dial arm shaft connecting hole (22).

8. The seat pan of claim 7, wherein: The dial arm (21) extends downward, and a locking hole (23) is formed in the middle of the dial arm (21), a locking shaft switch (6) passes through the bottom plate (1) made of plastic and extends into the locking hole (23), and the included angle between the dial arm (21) and the spring assembly (3) is between 80 degrees and 145 degrees.

9. The seat pan of claim 1, wherein: Two symmetrical inclined grooves are arranged on the bottom of the bottom plate (1), and the spring assembly (3) is arranged on each inclined groove, and the movable tail wing (2) is provided with a dial arm (21) matched with the spring assembly (3) corresponding to the positions of the two inclined grooves.

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