Iron stand of seat
By introducing a hinged structure of the support rod group into the seat iron frame, the seat plate is moved forward and the backrest bracket is tilted backward, the problem of the backrest bracket easily collapse when the seat is folded, and effective support for the backrest bracket is achieved to ensure that The safety and comfort of users during their nap.
Patent Information
- Application Number
- CN202420996938.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-05-09
AI Technical Summary
Existing seats are prone to collapse when the backrest is under heavy stress, which cannot be effectively prevented.
A seat iron frame is designed, including a bottom frame, seat plate, backrest bracket and drive mechanism. Through the hinged structure of the support rod group, the seat plate is moved forward in the lying position and the backrest bracket is tilted back to an approximate horizontal state. , the second end of the support rod group moves downward to the support ground, thereby supporting the backrest bracket to prevent collapse.
It effectively prevents the backrest bracket from collapse when under excessive stress in the lying position, ensuring the safety and comfort of the user during nap.
Smart Images
Figure CN222149482U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of seat iron frames, and in particular relates to a seat iron frame. Background Art
[0002] The chair comprises a seat portion and a backrest. When a user needs to take a nap, the tilted backrest is not conducive to rest. According to relevant technologies, in order to solve this problem, the backrest of the current chair can be laid down to form a plane with the seat portion to facilitate the user to take a nap.
[0003] However, during the implementation of the above solution, when the folded backrest is subjected to a large force, it is easy to collapse.
[0004] Therefore, how to prevent the collapsed backrest from falling down is a technical problem that those skilled in the art need to solve urgently. Utility Model Content
[0005] In order to solve the technical problems mentioned in the background technology, the utility model provides a chair iron frame, which includes: a bottom frame; and a seat plate, which is slidably arranged on the bottom frame; a pair of backrest brackets, which are hinged to the rear part of the seat plate; and a driving mechanism; wherein a support rod group is arranged on the backrest bracket, and the first end of the support rod group is hinged to the seat plate; the chair iron frame can be transformed at least between a sitting position and a lying position under the action of the driving mechanism; in the lying position, the driving mechanism drives the seat plate to move forward so that the backrest bracket tilts backward to an approximately horizontal state, and the second end of the support rod group moves downward until it supports the ground.
[0006] In one embodiment, in the lying position, the seat plate is moved forward 300 mm to 600 mm relative to the sitting position.
[0007] In one embodiment, in the lying position, the seat plate is moved forward 400 mm to 450 mm relative to the sitting position.
[0008] In one embodiment, in the lying position, the backrest support is tilted backwards by a maximum of 70° relative to the sitting position.
[0009] In one embodiment, in the lying position, the backrest support is tilted backwards by a maximum of 65° relative to the sitting position.
[0010] In one embodiment, the middle portion of the backrest bracket is hinged to the bottom frame via a backrest connecting rod; in the lying position, the hinge point N between the backrest bracket and the backrest connecting rod is moved forward 235 mm to 335 mm relative to the sitting position.
[0011] In one embodiment, the middle portion of the backrest bracket is hinged to the bottom frame via a backrest connecting rod; in the lying position, the hinge point N between the backrest bracket and the backrest connecting rod is moved forward 275 mm to 300 mm relative to the sitting position.
[0012] In one of the embodiments, the support rod group includes: a first support rod and a second support rod; wherein the middle portion of the first support rod is hinged to the backrest bracket, and the first end of the first support rod is hinged to the seat plate through the second support rod; during the process of the chair iron frame changing from a sitting position to a lying position, the second end of the first support rod moves downward until it supports the ground; the second end of the first support rod is provided with a support wheel.
[0013] In one embodiment, in the lying position, the hinge point of the first support rod and the backrest bracket is lowered by 125 mm to 155 mm relative to the sitting position.
[0014] In one embodiment, in the lying position, the hinge point between the first support rod and the backrest bracket is moved forward 450 mm to 500 mm relative to the sitting position.
[0015] The beneficial effect of the utility model is that when the iron frame of the chair changes from a sitting position to a lying position, the second end of the first support rod moves downward until it supports the ground, thereby supporting the backrest bracket and preventing the backrest bracket from collapsing due to excessive force.
[0016] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures particularly pointed out in the description and the drawings.
[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 It is a three-dimensional structural diagram of the iron frame of the chair in the sitting position;
[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the iron frame of the chair when it is in a lying position;
[0021] Figure 3 This is a schematic diagram comparing the forward movement of the seat plate when the iron frame of the chair is in the sitting position and the lying position;
[0022] Figure 4 1. It is a comparative schematic diagram of the forward movement of the backrest support when the iron frame of the chair is in the sitting position and the lying position;
[0023] Figure 5 It is a structural schematic diagram of the support rod group.
[0024] In the figure:
[0025] Bottom frame 1, slide rail 11;
[0026] Sitting board 2, first pulley block 21, second pulley block 22;
[0027] Backrest bracket 3, backrest connecting rod 31;
[0028] Driving mechanism 4, screw rod 41, screw rod nut 42;
[0029] Support rod group 5, first support rod 51, second support rod 52, support wheel 53;
[0030] Outer frame 6;
[0031] The seat forward movement distance L, the backward tilt angle α of the backrest bracket, the hinge point M between the first support rod and the backrest bracket, the hinge point N between the backrest bracket and the backrest connecting rod, the forward movement distance H of the hinge point M, and the forward movement distance D of the hinge point N. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0033] like Figure 1 , Figure 2As shown, at least one embodiment provides a chair iron frame, which includes: a base frame 1; and a seat plate 2, which is slidably arranged on the base frame 1; a pair of backrest brackets 3, which are hinged to the rear part of the seat plate 2; and a driving mechanism 4; wherein a support rod group 5 is arranged on the backrest bracket 3, and the first end of the support rod group 5 is hinged to the seat plate 2; the chair iron frame can be transformed at least between a sitting position and a lying position under the action of the driving mechanism 4; in the lying position, the driving mechanism 4 drives the seat plate 2 to move forward so that the backrest bracket 3 tilts backward to an approximately horizontal state, and the second end of the support rod group 5 moves downward until it supports the ground.
[0034] In some embodiments, the bottom frame 1 is the base of the seat iron frame, which is connected to the outer frame 6 of the seat. The outer frame 6 is placed on the ground. When the seat iron frame is adjusted in posture, the outer frame 6 and the bottom frame 1 do not move.
[0035] In some embodiments, the seat board 2 is slidably arranged on the bottom frame 1; wherein the front part of the seat board 2 is supported on the ground by a first pulley set 21, and the rear part is slidably arranged on the bottom frame 1 by a second pulley set 22; when the seat board 2 is subjected to force, it can slide; specifically, two sets of slide rails 11 are arranged on the bottom frame 1, which are respectively located on both sides of the seat board 2; the first pulley set 21 is located at the front part of the seat board 2, and the second pulley set 22 is located at the rear part of the seat board 2 and is placed in the corresponding slide rail 11, so that the seat board 2 is supported by the pulley set.
[0036] In some embodiments, a pair of backrest brackets 3 are symmetrically arranged on both sides of the rear of the seat board 2; the two backrest brackets 3 are used to install the backrest board, and the backrest board realizes posture adjustment through the backrest brackets 3; specifically, the backrest bracket 3 is hinged to the rear of the seat board 2, and the middle part of the backrest bracket 3 is hinged to the bottom frame 1 through the backrest connecting rod 31; at this time, when the seat board 2 moves forward, the bottom frame 1 will pull the backrest bracket 3 to rotate backward around the intersection with the seat board 2 through the backrest connecting rod 31 to realize backward tilt.
[0037] In some embodiments, the support rod group 5 is arranged on the backrest bracket 3, and the first end of the support rod group 5 is hinged to the seat plate 2; wherein the support rod group 5 includes: a first support rod 51 and a second support rod 52; the middle part of the first support rod 51 is hinged to the backrest bracket 3, and the first end of the first support rod 51 is hinged to the seat plate 2 through the second support rod 52; in the process of the seat iron frame changing from a sitting position to a lying position, the second end of the first support rod 51 moves downward until it supports the ground, thereby supporting the backrest bracket 3 and preventing the backrest bracket 3 from collapsing due to excessive force.
[0038] In some embodiments, a support wheel 53 is disposed at the second end of the first support rod 51 .
[0039] like Figure 5As shown, in some embodiments, the driving mechanism 4 includes: a screw rod 41 and a screw nut 42; wherein the screw nut 42 is arranged on the bottom frame 1, the first end of the screw rod 41 is connected relative to the seat plate 2, and the second end is passed through the screw nut 42. When the screw rod 41 rotates, the screw nut 42 can be moved away from or close to the first end of the screw rod 41, thereby realizing the movement of the seat plate 2, that is, driving the seat iron frame to change at least between a sitting position and a lying position.
[0040] like Figure 3 As shown, in some embodiments, L is the forward distance of the seat board 2 when it changes from a sitting position to a lying position; in the lying position, the seat board 2 moves forward 300mm to 600mm relative to the sitting position, preferably 400mm to 450mm, and more preferably 433mm.
[0041] like Figure 3 As shown, in some embodiments, angle α is the angle at which the backrest bracket 3 is tilted backward to the horizontal; in the lying position, the backrest bracket 3 is tilted backward at most 70° relative to the sitting position, preferably, it is tilted backward at most 65°, and more preferably, it is tilted backward at most 63°; wherein, in the lying position, the backrest bracket 3 is in a horizontal state, so that the soft bag installed thereon can achieve seamless gap with the seat cushion and be in the same horizontal plane.
[0042] like Figure 3 As shown, in some embodiments, in the lying position, the hinge point M between the first support rod 51 and the backrest bracket 3 is lowered by 125 mm to 155 mm relative to the sitting position, preferably by 135 mm to 145 mm.
[0043] like Figure 3 As shown, in some embodiments, in the lying position, the hinge point M between the first support rod 51 and the backrest bracket 3 is moved forward by 450 mm to 500 mm relative to the sitting position.
[0044] like Figure 4 As shown, in the lying position, the hinge point N between the backrest bracket 3 and the backrest connecting rod 31 moves forward 235mm to 335mm relative to the sitting position, preferably, moves forward 275mm to 300mm, and more preferably, moves forward 287mm; the distance that the hinge point N moves forward is the distance that the backrest bracket 3 moves forward. The backrest bracket 3 will move forward during the process of adjusting from the sitting position to the lying position, thereby achieving zero wall contact of the seat iron frame.
[0045] In some embodiments, hinges may be replaced by rivets, bolts, etc., but are not limited to these.
[0046] In summary, when the iron frame of the chair changes from a sitting position to a lying position, the second end of the first support rod 51 moves downward until it reaches the ground, thereby supporting the backrest bracket 3 and preventing the backrest bracket 3 from collapsing due to excessive force.
[0047] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.
[0048] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0049] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0050] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A seat iron frame, characterized in that: include: Bottom frame (1); and A seat plate (2) is slidably arranged on the bottom frame (1); a pair of backrest brackets (3) hinged to the rear of the seat plate (2); and A driving mechanism (4); wherein The backrest bracket (3) is provided with a support rod group (5), and the first end of the support rod group (5) is hinged to the seat plate (2); The seat iron frame can be transformed at least between a sitting position and a lying position under the action of a driving mechanism (4); In the lying position, the driving mechanism (4) drives the seat plate (2) to move forward so that the backrest bracket (3) tilts backward to a nearly horizontal state, and the second end of the support rod group (5) moves downward until it supports the ground.
2. The seat iron frame according to claim 1, characterized in that: In the lying position, the seat plate (2) is moved forward by 300 mm to 600 mm relative to the sitting position.
3. The seat iron frame according to claim 1, characterized in that: In the lying position, the seat plate (2) is moved forward by 400 mm to 450 mm relative to the sitting position.
4. The seat iron frame according to claim 1, characterized in that: In the lying position, the backrest frame (3) is tilted backwards by a maximum of 70° relative to the sitting position.
5. The seat iron frame according to claim 1, characterized in that: In the lying position, the backrest support (3) is tilted backwards by a maximum of 65° relative to the sitting position.
6. The seat iron frame according to claim 1, characterized in that: The middle part of the backrest bracket (3) is hinged to the bottom frame (1) via a backrest connecting rod (31); In the lying position, the hinge point N between the backrest bracket (3) and the backrest connecting rod (31) is moved forward by 235 mm to 335 mm relative to the sitting position.
7. The seat iron frame according to claim 1, characterized in that: The middle part of the backrest bracket (3) is hinged to the bottom frame (1) via a backrest connecting rod (31); In the lying position, the hinge point N between the backrest bracket (3) and the backrest connecting rod (31) is moved forward by 275 mm to 300 mm relative to the sitting position.
8. The seat iron frame according to claim 1, characterized in that: The support rod group (5) comprises: a first support rod (51) and a second support rod (52); wherein The middle part of the first support rod (51) is hinged to the backrest bracket (3), and the first end of the first support rod (51) is hinged to the seat plate (2) through the second support rod (52); When the iron seat frame changes from a sitting position to a lying position, the second end of the first support rod (51) moves downward until it supports the ground; A supporting wheel (53) is provided at the second end of the first supporting rod (51).
9. The seat iron frame according to claim 8, characterized in that: In the lying position, the hinge point M between the first support rod (51) and the backrest bracket (3) is lowered by 125 mm to 155 mm relative to the sitting position.
10. The seat iron frame according to claim 8, characterized in that: In the lying position, the hinge point M between the first support rod (51) and the backrest bracket (3) is moved forward by 450 mm to 500 mm relative to the sitting position.