CN215304322U - Spring mounting structure for seat chassis - Google Patents

Abstract

The utility model discloses a spring mounting structure for a seat chassis, which comprises an elastic resetting device arranged in the chassis, wherein the elastic resetting device comprises a group of springs which are arranged at intervals, the springs are mounted between a bracket and a base of the chassis and are vertically arranged; an upper baffle plate is arranged between the upper end of the spring and the bracket, and a lower baffle plate is arranged between the lower end of the spring and the base; the upper end of the spring is propped against the upper clapboard, and the lower end of the spring is propped against the lower clapboard; the bracket is in hinged fit with the base, and when the bracket rotates around the base, the spring generates corresponding elastic deformation and is limited between the upper partition plate and the lower partition plate; the spring is extruded between the upper partition plate and the lower partition plate, so that the structure is more stable; the spring is separated from the bracket and the spring is separated from the base through the upper partition plate and the lower partition plate; the noise generated by friction between the spring and the sheet metal part during the deformation of the spring can be effectively avoided; the use experience of the user is fully considered, and the design is more humanized.

Description

Spring mounting structure for seat chassis

Technical Field

The utility model relates to the field of seats, in particular to a spring mounting structure for a seat chassis.

Background

The current office chair with adjustable chair back or chair seat on the market is provided with a spring device in a chassis thereof for providing the restoring force after the chair back or the chair seat tilts up; the gravity of the human body on the seat and the elastic force of the spring form opposition, so that the spring can bear larger pressure all the time in the use process; it is very important that the spring can be stably installed in the chassis; the spring is usually connected between the base of the chassis and the bracket, if the connection mode between the spring and the base and the bracket is unreasonable, the installation of the spring is very laborious, and the problems of spring scraping, rotation, dislocation and falling off can occur in the use process of the seat, so that the feeling of customers and the use safety of the seat are influenced; moreover, because the bracket and the base are both sheet metal parts and the spring is also made of metal materials, the spring is mutually extruded with the bracket and the base in the compression process to generate sharp noise, and the use feeling is greatly influenced; therefore, a spring mounting structure for a seat chassis, which is convenient and fast to connect and reasonable in layout, is urgently needed to be designed.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes the defects in the prior art and provides a spring mounting structure for a seat chassis, wherein an upper partition plate is arranged between a bracket and the upper end of a spring, and a lower partition plate is arranged between a bottom plate and the lower end of the spring; when the bracket rotates relative to the base, the spring extrudes between the upper partition plate and the lower partition plate, so that the structure is more stable; the spring is separated from the bracket and the spring is separated from the base through the upper partition plate and the lower partition plate; the noise generated by friction between the spring and the sheet metal part during the deformation of the spring can be effectively avoided; the use experience of the user is fully considered, and the design is more humanized.

The technical scheme of the utility model is realized as follows:

a spring mounting structure for a seat chassis comprises an elastic reset device arranged in the chassis, wherein the elastic reset device comprises a group of springs which are arranged at intervals, the springs are mounted between a bracket and a base of the chassis and are vertically arranged; an upper baffle plate is arranged between the upper end of the spring and the bracket, and a lower baffle plate is arranged between the lower end of the spring and the base; the upper end of the spring is propped against the upper clapboard, and the lower end of the spring is propped against the lower clapboard; the bracket is in hinged fit with the base, and the spring generates corresponding elastic deformation and is limited between the upper partition plate and the lower partition plate in the rotating process of the bracket around the base.

Preferably, the upper partition plate is provided with a resisting column which protrudes downwards into the spring, and the lower partition plate is correspondingly provided with a resisting column which protrudes upwards into the spring; when the bracket rotates, the spring is extruded between the upper partition plate and the lower partition plate, and the resisting column is abutted with the inner part of the spring to limit the deflection of the spring. Through set up the fender post on last baffle and lower baffle, make spring coupling more firm.

Preferably, the spring is a compression spring. Can bear larger pressure.

Preferably, the upper partition plate and the lower partition plate are made of plastic or rubber. The spring is separated from the bracket and the base by adopting a plastic material or a rubber material; eliminate the noise generated by the contact of the spring and the metal plate during the extrusion.

Preferably, the number of the springs is 2-5, and the springs are arranged side by side and are arranged at intervals along the width direction of the chassis; the upper ends of the springs are all abutted to the same upper partition plate, and the lower ends of the springs are all abutted to the same lower partition plate. A plurality of springs are provided to provide sufficient spring force to allow the seat to tilt back.

Preferably, the upper end of the bracket comprises a first connecting plate arranged along the width direction of the bracket, and the base comprises a bottom plate; the upper partition plate is connected to the first connecting plate, and the lower partition plate is connected to the bottom plate.

Preferably, the upper partition plate is in clamping fit with the first connecting plate, and the lower partition plate is in clamping fit with the bottom plate; the spring is always in a compressed state, and the elastic force of the spring acts on the upper partition plate to ensure that the upper partition plate and the first connecting plate are relatively fixed; the elastic force of the spring acts on the lower clapboard to ensure that the lower clapboard and the bottom plate are kept relatively fixed. Adopt the joint mode, need not to keep the joint fixed through screwed connection, the spring provides elasticity and makes and go up baffle and first connecting plate and keep the joint fixed, and lower baffle keeps the joint fixed with the bottom plate, and the structure is retrencied more, design benefit.

Preferably, an upper clamping block protruding upwards is arranged on the upper partition plate, an upper clamping groove is correspondingly arranged on the first connecting plate, and the spring presses the upper partition plate upwards to enable the upper clamping block to be clamped in the upper clamping groove; the lower baffle plate is provided with a lower clamping block protruding downwards, the bottom plate is correspondingly provided with a lower clamping groove, and the spring extrudes the lower baffle plate downwards and clamps the lower clamping block in the lower clamping groove.

Preferably, the length of the spring is between 8 and 25 cm; the length of the abutting column is between 2 and 5 cm.

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

firstly, an upper partition plate is arranged between the bracket and the upper end of the spring, and a lower partition plate is arranged between the bottom plate and the lower end of the spring, so that the spring is extruded between the upper partition plate and the lower partition plate; the upper partition plate and the lower partition plate are made of plastic or rubber; the noise generated by friction between the spring and the sheet metal part during the deformation of the spring can be effectively avoided; the use experience of the user is fully considered, and the design is more humanized.

Secondly, all be equipped with the outstanding support post in the spring on last baffle, the baffle down for when the spring takes place deformation, support the post and will produce the skew with the restriction spring with the spring butt, make the spring can be restricted all the time between last baffle and the baffle down, keep stable in structure. In addition, the spring is a pressure spring, so that the spring always upwards extrudes the upper partition plate to enable the upper partition plate to be fixedly clamped with the first connecting plate, and downwards extrudes the lower partition plate to enable the lower partition plate to be fixedly clamped with the bottom plate; the upper and lower partition plates are respectively kept relatively fixed with the bracket and the base by the elasticity of the spring without screw connection; design benefit when guaranteeing stable in structure, makes the installation of spring convenient and fast more.

Moreover, when the springs are installed, a plurality of springs do not need to be connected between the bracket and the bottom plate in sequence, so that the connection is complicated; at present, a plurality of springs are connected between an upper partition plate and a lower partition plate in advance, then the lower partition plate is connected to a bottom plate, and the upper partition plate is connected to a first connecting plate; thereby the installation of the spring can be completed at one time; the spring mounting steps are quicker, the connection is simpler, and the mounting time is saved.

Drawings

FIG. 1 is a schematic perspective view of the base plate according to an embodiment of the present invention;

FIG. 2 is an exploded view of a base in an embodiment of the utility model;

FIG. 3 is a schematic perspective view of an elastic restoring apparatus between a base and a bracket according to an embodiment of the present invention;

FIG. 4 is a schematic perspective view of the elastic return device connected to the bracket and the base according to an embodiment of the present invention;

FIG. 5 is a perspective view of a spring mount according to an embodiment of the present invention;

FIG. 6 is a schematic perspective view of an embodiment of the present invention showing the initial position of the chassis;

FIG. 7 is a perspective view of the bracket rotated backward relative to the base in an embodiment of the present invention;

fig. 8 is a perspective view of an action lever according to an embodiment of the present invention.

The figures are numbered: a base 1; a bracket 2; an elastic reset device 3; a spring 3 a; a base plate 4; a supporting vertical plate 5; a side plate 6; a first connecting plate 7; a second connecting plate 8; a rotating shaft 9; a convex cap 9 a; a limiting groove 10; a control handle 11; an action lever 12; a locking hole 13; a stopper pin 14; an upper partition 15; an upper latch 15 a; an upper card slot 15 b; a stopper post 16; a lower partition 17; a lower latch 17 a; and a lower card slot 17 b.

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 utility model 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 utility model is as follows:

as shown in fig. 1-8, the present invention provides a spring mounting structure for a seat chassis, the seat chassis includes a base 1 connected with an air rod and a bracket 2 connected with a seat, the front end of the bracket 2 is in hinged fit with the front end of the base 1, so that the seat can be adjusted in tilting when a user uses the seat. The spring mounting structure comprises an elastic resetting device 3 arranged between a base 1 and a bracket 2, the elastic resetting device 3 comprises a group of springs 3a arranged at intervals, the springs 3a are arranged between the bracket 2 and the base 1 of the chassis, and the springs 3a are vertically arranged; an upper partition plate 15 is arranged between the upper end of the spring 3a and the bracket 2, and a lower partition plate 17 is arranged between the lower end of the spring 3a and the base 1; the upper end of the spring 3a is propped against the upper partition plate 15, and the lower end of the spring 3a is propped against the lower partition plate 17; during the rotation of the bracket 2 around the base 1, the spring 3a will generate corresponding elastic deformation and the spring 3a is always limited between the upper and lower partition plates 15, 17.

As shown in fig. 2-4, the base 1 includes a bottom plate 4 horizontally disposed and a vertical supporting plate 5 extending upward along the vertical direction along the left and right sides of the bottom plate 4; the bracket 2 comprises two side plates 6 which are arranged in bilateral symmetry, and the side plates 6 are arranged longitudinally; a first connecting plate 7 which is horizontally arranged is connected between the rear ends of the two side plates 6; a second connecting plate 8 which is horizontally arranged is connected between the front ends of the two side plates 6; the bracket 2 is fixedly connected with the chair seat through a first connecting plate 7 and a second connecting plate 8. When the bracket 2 is connected with the base 1, the base 1 is placed in the bracket 2, so that the two supporting vertical plates 5 are positioned between the two side plates 6, and then a rotating shaft 9 is arranged between the front end of the bracket 2 and the front end of the base 1 in a penetrating manner so that the bracket 2 is in rotating fit with the base 1; the rotating shaft 9 is a long shaft, the rotating shaft 9 penetrates through one side of the bracket 2, and the rotating shaft 9 penetrates through the side plate 6 and the supporting vertical plate 5 in sequence and then penetrates out of the other side of the bracket 2; and the two ends of the rotating shaft 9 are respectively provided with a convex cap 9a, so that the rotating shaft 9 can not be separated from the bracket 2 and the base 1; so that the bracket 2 can rotate around the base 1 through the rotation shaft 9.

As shown in fig. 2 and 6-8, a limiting mechanism for limiting the rotation of the bracket 2 is further arranged between the bracket 2 and the base 1; the limiting mechanism comprises a limiting groove 10 arranged on a side plate 6 on one side of the bracket 2 and an action rod 12 arranged on the base 1 in a penetrating way; the method specifically comprises the following steps: the limiting groove 10 is arranged at the rear end of the side plate 6 and is an arc-shaped groove; a control handle 11 convenient for hands to hold is arranged at the end part of the action rod 12; during connection, the action rod 12 penetrates from one side of the bracket 2 with the limiting groove 10, the action rod 12 sequentially penetrates through the limiting groove 10 and the supporting vertical plate 5 positioned on the same side with the limiting groove 10, and the end part of the action rod 12 continuously penetrates through the supporting vertical plate 5 on the other side of the base 1; then, during the rotation process of the bracket 2 relative to the base 1, the action rod 12 is limited in the limiting groove 10 to limit the rotation of the bracket 2; when the second connecting plate 8 is in a horizontal state in the initial position, the second connecting plate 8 is abutted against the front end of the supporting vertical plate 5 to limit the bracket 2 to rotate forwards relative to the base; when the bracket 2 rotates backwards to the maximum angle, the first connecting plate 7 is abutted with the rear end of the supporting vertical plate 5 to limit the bracket 2 to rotate continuously; and a double-limiting mechanism is adopted, so that the chassis structure is more stable.

The action rod 12 can also lock the bracket 2 in rotation, so that the bracket 2 is kept relatively fixed with the base 1 at the initial position; specifically, the method comprises the following steps: the action rod 12 can move left and right along the width direction of the chassis, and the first connecting plate 7 and the second connecting plate 8 on the bracket 2 are both in a horizontal state at the initial position; a locking hole 13 is arranged on the supporting vertical plate 5 (without a limiting groove 10) on the other side of the bracket 2, when in an initial position, the center of the locking hole 13 is aligned with the axial direction of the action rod 12, the action rod 12 can be inserted into the locking hole 13, so that the bracket 2 and the base 1 are rotationally locked, the two are kept relatively fixed, and the seat on the seat cannot tilt; when the chair needs to be tilted again, the control handle 11 is held to pull the action rod 12 out of the locking hole 13, and the bracket 2 can rotate relative to the base 1 again. Two limiting parts for limiting the moving range of the action rod 12 are arranged on the action rod 12 at intervals; the limiting piece is a limiting pin 14 perpendicular to the action rod 12, and two ends of the limiting pin 14 protrude out of the outer surface of the action rod 12; and the two limit pins 14 are positioned between the two vertical support plates 5 of the base 1; when the action rod 12 is controlled to move towards the direction far away from the chassis until the limit pin 14 is abutted against the supporting vertical plates 5, the action rod 12 just penetrates through the two supporting vertical plates 5 and does not penetrate into the locking hole 13, and the bracket 2 can rotate around the base 1; under initial position, when bracket 2 has not rotated relatively base 1 yet, can control action bars 12 and remove until locating part 14 and support riser 5 butt in the chassis, action bars 12 just insert to locking hole 13 in, and action bars 12 can not wear out bracket 2, bracket 2 then keeps relatively fixed with base 1. The following are specifically mentioned: the action rod 12 is not specially arranged, and the action rod 12 is arranged on the chassis and used for adjusting the lifting of an air rod (not shown); therefore, the function of the action rod 12 is fully utilized, and the rotation of the bracket 2 can be limited and locked; simple structure is reliable, and design benefit makes the structure more retrench, saves the cost.

As shown in fig. 1 to 7, the elastic return means 3 are arranged between the base plate 4 and the first connecting plate 7, in particular: the elastic reset device 3 comprises three springs 3a arranged at intervals along the width direction of the chassis, and the springs 3a are compression springs; the upper partition plate 15 and the lower partition plate 17 are made of plastic materials; the upper partition plate 15 is arranged along the length direction of the first connecting plate 7; the upper partition plate 15 is in clamping fit with the first connecting plate 7, an upper clamping block 15a protruding upwards is arranged on the upper partition plate 15, an upper clamping groove 15b is correspondingly arranged on the first connecting plate 7, and the upper partition plate 15 is clamped on the first connecting plate 7; and a stop column 16 which protrudes downwards is also arranged on the lower surface of the upper clapboard 15; the connection mode of the lower partition board 17 and the bottom board 4 is the same as the connection mode of the upper partition board 15 and the first connecting board 7: a lower clamping block 17a protruding downwards is arranged on the lower partition plate 17, a lower clamping groove 17b is correspondingly arranged on the bottom plate 4, and the lower partition plate 17 is clamped on the bottom plate 4; and the lower partition 17 is also provided with a stopper post 16 protruding upward. In this embodiment, the length of the spring 3a is 15cm, and the length of the abutment post 16 is 2 cm.

Three spring 3a all vertically set up between last baffle 15 and lower baffle 17, the cooperation mode between spring 3a and upper and lower baffle 15, 17 is: the spring 3a is pressed between the upper partition plate 15 and the lower partition plate 17, the upper end of the spring 3a is abutted against the upper partition plate 15, and the lower end of the spring 3a is abutted against the lower partition plate 17; and the resisting columns 16 on the upper and lower partition plates 15 and 17 penetrate into the spring 3a respectively, so that when the spring 3a deforms, the resisting columns 16 are in contact with the spring 3a to limit the spring 3a to generate deviation, the spring 3a can be always limited between the upper partition plate 15 and the lower partition plate 17, and the structure is kept stable. In addition, because the spring 3a is a compression spring, the spring 3a will always press the upper partition plate 15 upwards to keep the upper partition plate clamped and fixed with the first connecting plate 7, and press the lower partition plate 17 downwards to keep the lower partition plate clamped and fixed with the bottom plate 4; the elastic reset device 3 is simply and reliably connected with the base without screw connection; the upper and lower clapboards 15 and 17 are respectively kept relatively fixed with the bracket 2 and the base 1 by the elasticity of the spring 3 a; design benefit when guaranteeing stable in structure, makes spring 3 a's installation convenient and fast more. When the spring 3a is installed, the spring 3a does not need to be connected between the bracket 2 and the bottom plate 1 in sequence, and the connection is too complicated; now, a plurality of springs 3a are connected between the upper partition plate 15 and the lower partition plate 17 in advance, then the lower partition plate 17 is connected to the bottom plate 4, and the upper partition plate 15 is connected to the first connecting plate 7; so that the mounting of the spring 3a can be completed at one time; the mounting steps of the spring 3a are quicker, the connection is simpler, and the mounting time is saved.

Moreover, the upper partition plate 15 and the lower partition plate 17 are made of plastic materials, and the bracket 2 and the base 1 are made of sheet metal parts, so that if the spring 3a is directly connected with the bracket 2 or the base 1, the mutual extrusion of the three parts can generate noise, and the use feeling of a user can be influenced; the spring 3a is spaced apart from the first link plate 7 and the base plate 4 by the provision of the upper and lower partition plates 15, 17; no noise is generated by the extrusion between the spring 3a and the plastic part; the noise can be effectively eliminated, and the design is more humanized.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the utility model, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the utility model.

Claims (9)

1. A spring mounting structure for a seat pan, characterized in that: the elastic resetting device comprises a group of springs which are arranged at intervals, the springs are arranged between a bracket and a base of the chassis, and the springs are arranged vertically; an upper baffle plate is arranged between the upper end of the spring and the bracket, and a lower baffle plate is arranged between the lower end of the spring and the base; the upper end of the spring is propped against the upper clapboard, and the lower end of the spring is propped against the lower clapboard; the bracket is in hinged fit with the base, and the spring generates corresponding elastic deformation and is limited between the upper partition plate and the lower partition plate in the rotating process of the bracket around the base.

2. The spring mounting structure for a seat pan according to claim 1, wherein: the upper partition plate is provided with a resisting column which protrudes downwards into the spring, and the lower partition plate is correspondingly provided with a resisting column which protrudes upwards into the spring; when the bracket rotates, the spring is extruded between the upper partition plate and the lower partition plate, and the resisting column is abutted with the inner part of the spring to limit the deflection of the spring.

3. The spring mounting structure for a seat pan according to claim 2, wherein: the spring is a pressure spring.

4. The spring mounting structure for a seat pan according to claim 2, wherein: the upper partition plate and the lower partition plate are made of plastic or rubber.

5. The spring mounting structure for a seat pan according to claim 1, wherein: the springs are arranged in parallel for 2-5 and are arranged at intervals along the width direction of the chassis; the upper ends of the springs are all abutted to the same upper partition plate, and the lower ends of the springs are all abutted to the same lower partition plate.

6. The spring mounting structure for a seat pan according to claim 1, wherein: the upper end of the bracket comprises a first connecting plate arranged along the width direction of the bracket, and the base comprises a bottom plate; the upper partition plate is connected to the first connecting plate, and the lower partition plate is connected to the bottom plate.

7. The spring mounting structure for a seat pan according to claim 6, wherein: the upper partition plate is in clamping fit with the first connecting plate, and the lower partition plate is in clamping fit with the bottom plate; the spring is always in a compressed state, and the elastic force of the spring acts on the upper partition plate to ensure that the upper partition plate and the first connecting plate are relatively fixed; the elastic force of the spring acts on the lower clapboard to ensure that the lower clapboard and the bottom plate are kept relatively fixed.

8. The spring mounting structure for a seat pan according to claim 7, wherein: an upper clamping block protruding upwards is arranged on the upper partition plate, an upper clamping groove is correspondingly arranged on the first connecting plate, and the spring upwards presses the upper partition plate to enable the upper clamping block to be clamped in the upper clamping groove; the lower baffle plate is provided with a lower clamping block protruding downwards, the bottom plate is correspondingly provided with a lower clamping groove, and the spring extrudes the lower baffle plate downwards and clamps the lower clamping block in the lower clamping groove.

9. The spring mounting structure for a seat pan according to claim 2, wherein: the length of the spring is between 8 and 25 cm; the length of the abutting column is between 2 and 5 cm.

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