CN220384683U - Mounting structure for realizing adjustment of seat backrest - Google Patents
Mounting structure for realizing adjustment of seat backrest Download PDFInfo
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- CN220384683U CN220384683U CN202321821588.8U CN202321821588U CN220384683U CN 220384683 U CN220384683 U CN 220384683U CN 202321821588 U CN202321821588 U CN 202321821588U CN 220384683 U CN220384683 U CN 220384683U
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- 230000007246 mechanism Effects 0.000 claims abstract description 40
- 210000001503 joint Anatomy 0.000 claims description 3
- 230000001771 impaired effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 206010005963 Bone formation increased Diseases 0.000 description 1
- 208000028571 Occupational disease Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
Abstract
The utility model discloses a mounting structure for realizing the adjustment of a seat backrest, which comprises a foot rest, a middle supporting tube, an adjusting mechanism and a back frame, wherein the adjusting mechanism is connected with a handle, the handle is connected with a control arm, and the adjusting mechanism is mounted at the tail end of the middle supporting tube; the adjusting mechanism comprises a shell, a movable connecting piece, a fixed connecting piece and a control piece, wherein the movable connecting piece, the fixed connecting piece and the control piece are arranged in the shell, the fixed connecting piece is fixedly connected with the middle supporting tube, and the back frame is fixedly connected with the movable connecting piece; the movable connecting piece is installed in a pair of fixed covers, and fixed cover and movable connecting piece assemble with fixed connecting piece together through a fixed axle, and the control arm is also installed on fixed connecting piece through the fixed axle in order to realize rotatablely. So the atress of swing joint spare can not transmit for the casing for structural strength is higher, and the casing is difficult to impaired, and life is longer. And only a set of adjusting mechanism is arranged in the middle, so that the stress is balanced, the cost is lower, and misoperation of the handle is not easy to occur in the middle.
Description
Technical Field
The utility model relates to the technical field of seat products, in particular to an adjustable seat back frame mounting structure.
Background
The seat is an important furniture in life, work and study of people, and the traditional seat has no special function and is only used for sitting. The sitting posture can be uncomfortable for a long time, and some direct occupational diseases such as lumbar vertebra hyperosteogeny and the like can be generated. Therefore, people invent some seats capable of adjusting the angle of the back frame, and some seats can also be used as reclining chairs by putting the back frame down. However, most of the existing back frame angle-adjustable mounting structures adopted by such seats have the following problems: the first adjusting mechanism and the adjusting mechanism are generally arranged on one side or two sides of the seat, stress is not uniform when the adjusting mechanism is arranged on one side, operation is laborious, and loss of each stress part is large. The two sides of the device are provided with the support, so that the device can be uniformly stressed, is more labor-saving to operate, and can increase the cost by about one time. In addition, the adjusting mechanism is arranged on the side surface, so that misoperation is easy to occur, especially when the adjusting mechanism is used in schools; second, be used for realizing through rotatory angle modulation's swing joint spare only through the casing spacing, structural strength is lower, damages the casing easily and influences regulatory function and the steadiness of seat.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model provides the mounting structure for realizing the adjustment of the backrest of the seat, which has more reasonable structural design, more balanced cost and operation convenience, higher stability, less possibility of damaging the shell and less possibility of misoperation.
In order to solve the technical problems, the utility model adopts the following technical scheme: the mounting structure for realizing the adjustment of the backrest of the seat comprises a foot rest, a middle supporting tube, an adjusting mechanism and a back frame, wherein the middle supporting tube is arranged on the foot rest and positioned at the longitudinal middle position of the seat, and the back frame is arranged through the adjusting mechanism so as to realize the adjustment; the adjusting mechanism is connected with a handle, the handle is connected with a control arm, the control arm is connected with the adjusting mechanism, and the back frame is controlled to be adjusted through the operation handle, and the adjusting mechanism is characterized in that: the adjusting mechanism comprises a set of adjusting mechanisms which are arranged at the tail end of the middle supporting tube; the adjusting mechanism comprises a shell, a movable connecting piece, a fixed connecting piece and a control piece, wherein the movable connecting piece, the fixed connecting piece and the control piece are arranged in the shell, the fixed connecting piece is fixedly connected with the middle supporting tube, and the back frame is fixedly connected with the movable connecting piece; the movable connecting piece is arranged in the pair of fixed covers, the fixed covers and the movable connecting piece are assembled into a rotatable structure together through a fixed shaft and the fixed connecting piece, and the control arm is also arranged on the fixed connecting piece through the fixed shaft so as to realize rotation; the movable connecting piece is provided with a clamping tooth part which is integrally arc-shaped and extends out of the fixed cover from the side face;
the control piece is arranged into a rotatable structure opposite to the movable connecting piece through a rotating shaft, and is provided with an arc-shaped rack which is opposite to and clamped with the clamping tooth part of the movable connecting piece; the control arm is in butt joint with the control piece, and the arc-shaped rack of the control piece is pushed by the control arm to be separated from the latch part of the movable connecting piece so as to realize the rotation of the back frame; the control piece is connected with a spring, and the arc-shaped rack of the control piece is clamped with the clamping tooth part of the movable connecting piece through the elasticity of the spring to fix the back frame.
Further, the fixed cover comprises a left half and a right half, the two halves of the fixed cover are oppositely combined to clamp the movable connecting piece in the middle to form an integral assembly, and the back frame is simultaneously connected and fixed with the fixed cover and the movable connecting piece; a notch is arranged at the bottom of the fixed cover, and the latch part extends out of the notch.
Further, a pushing pin is arranged on the side face of the control piece, a strip-shaped movable hole and a strip-shaped pushing hole are respectively arranged at the positions of the fixed connecting piece and the control arm, which are opposite to the pushing pin, the pushing pin penetrates into the pushing hole through the movable hole, the pushing pin is pressed down by the control arm through the handle, so that the control piece and the latch part of the movable connecting piece are separated from each other, and the back frame can be rotated backwards or forwards to adjust the back angle.
Further, the front end of the control arm is connected with the fixed shaft, a fixed pin is arranged between the front end of the control arm and the pushing hole, one end of the spring is connected with the fixed pin, and the other end of the spring is connected with the rotating shaft.
Further, the rotating shaft and the fixed connecting piece are assembled into a rotatable structure, the rotating shaft is provided with a hinge shaft seat, and the tail end of the control piece is connected with the rotating shaft and clamped by the hinge shaft seat.
Further, an arc-shaped guide hole is formed in the fixed connecting piece, a guide pin is arranged on the fixed cover and inserted into the guide hole to form a guide limiting structure when the movable connecting piece rotates, so that the back frame can be adjusted within a limited range and cannot fall forwards or backwards.
Further, the arc angle corresponding to the latch portion is 70-90 degrees, such as 85 degrees, so that the back frame can be adjusted between approximately vertical and lying.
Further, a fixing connector is respectively arranged at the left side and the right side of the fixing cover so as to further improve the stability of the rotation adjusting process, and the control arm is arranged at the outer side of the fixing connector at one side.
Further, the control arm and the fixed connecting pieces at two sides are covered inside the shell, the handle is arranged outside the shell, and the fixed shaft and the rotating shaft are respectively connected with the shell.
Further, the teeth of the latch part are ratchet teeth inclined to one side.
According to the utility model, through the mutual matching of the movable connecting piece, the fixed connecting piece, the control arm, the control piece and other parts, the movable connecting piece and the control piece are mutually clamped or separated, so that the positioning or stepless rotation adjustment of the back frame can be realized, and the use is convenient. The movable connecting piece is clamped inside by the fixed cover to form a whole capable of synchronously rotating, so that the stress of the movable connecting piece is not transmitted to the shell, the structural strength is higher, the shell is not easy to damage, and the service life is longer. Meanwhile, only one set of adjusting mechanism is arranged in the middle, so that the cost is lower on the premise of balancing the stress, and misoperation of the handle in the middle is difficult to occur, so that the chair is particularly suitable for being used as a student chair in schools.
Drawings
FIG. 1 is a main block diagram of the present utility model;
FIG. 2 is a block diagram showing an assembled state of the adjusting mechanism and the intermediate support tube;
FIG. 3 is a block diagram of the adjustment mechanism with the intermediate support tube assembled and the one side housing removed;
FIG. 4 is an assembly block diagram of the fixed connection within the adjustment mechanism;
FIG. 5 is a diagram showing the configuration of the movable connector and the control arm in the adjusting mechanism;
fig. 6 is an exploded view of the internal control member and the movable connecting member of the adjusting mechanism.
In the figure, 1 is a foot rest, 2 is a middle supporting tube, 3 is an adjusting mechanism, 31 is a shell, 32 is a movable connecting piece, 321 is a latch part, 33 is a fixed connecting piece, 331 is a movable hole, 332 is a guide hole, 34 is a control piece, 341 is a pushing pin, 35 is a fixed cover, 36 is a hinge shaft seat, 37 is a spring, 4 is a back frame, 5 is a handle, 51 is a control arm, 52 is a pushing hole, 53 is a fixed pin, 61 is a fixed shaft, 62 is a rotating shaft, and 63 is a guide pin.
Detailed Description
In this embodiment, referring to fig. 1 to 6, the installation structure for realizing the adjustment of the backrest of the chair comprises a foot rest 1, a middle supporting tube 2, an adjusting mechanism 3 and a back frame 4, wherein the middle supporting tube 2 is installed on the foot rest 1 and is positioned at the longitudinal middle position of the chair, the back frame 4 is installed through the adjusting mechanism 3 to realize the adjustment, and the backrest is installed through the back frame 4; the adjusting mechanism 3 is connected with a handle 5, the handle 5 is connected with a control arm 51, the control arm 51 is connected with the adjusting mechanism 3, and the back frame 4 is controlled to be adjusted by operating the handle 5; the adjusting mechanism 3 comprises a set of adjusting mechanisms which are arranged at the tail end of the middle supporting tube 2, so that the stress on the left and right sides of the backrest can be considered, and misoperation caused by collision of others when passing by is avoided; the adjusting mechanism 3 comprises a shell 31, a movable connecting piece 32, a fixed connecting piece 33 and a control piece 34, wherein the movable connecting piece 32, the fixed connecting piece 33 and the middle supporting tube 2 are connected and fixed, and the back frame 4 and the movable connecting piece 32 are connected and fixed; the movable connecting piece 32 is installed in a pair of fixed covers 35, the fixed covers 35 and the movable connecting piece 32 are assembled together into a rotatable structure with the fixed connecting piece 33 through a fixed shaft 61, and the control arm 51 is also installed on the fixed connecting piece 33 through the fixed shaft 61 so as to realize rotatability; the movable connector 32 has a latch portion 321 having an arc shape integrally, and the latch portion 321 extends from the side surface to the outside (bottom surface) of the fixed cover 35;
the control member 34 is installed to be a rotatable structure opposite to the movable connecting member 32 through a rotation shaft 62, and the control member 34 is provided with an arc-shaped rack which is opposite to and engaged with the latch portion 321 of the movable connecting member 32; the control arm 51 is in butt joint with the control piece 34, and the arc-shaped rack of the control piece 34 is pushed by the control arm 51 to be separated from the latch part 321 of the movable connecting piece 33 so as to realize the rotation of the back frame 4; the control piece 34 is connected with a spring 37, and the arc-shaped rack of the control piece 34 is clamped with the clamping tooth portion 321 of the movable connecting piece 32 through the elastic force of the spring 37 to fix the back frame 4, so that the backrest can be positioned at a certain angle.
The fixed cover 35 comprises a left half and a right half, the two halves of the fixed cover 35 are oppositely combined to clamp the movable connecting piece 32 in the middle to form an integral assembly, the movable connecting piece can synchronously rotate, and the back frame 4 is simultaneously connected and fixed with the fixed cover 35 and the movable connecting piece 32; a notch is provided at the bottom of the fixed cover 35, and a latch 321 protrudes from the notch. This prevents the casing 31 from being damaged by the force of the movable connector 32 being directly transmitted to the casing 31.
A pushing pin 341 is disposed on the side of the control member 34, a strip-shaped movable hole 331 and a pushing hole 52 are disposed at the positions of the fixed connection member 33 and the control arm 51 opposite to the pushing pin 341, the pushing pin 341 penetrates into the pushing hole 52 through the movable hole 331, the pushing pin 341 is pressed down by the control arm 51 by the handle 5 to separate the control member 34 from the latch portion 321 of the movable connection member 32, and the back frame 4 can be rotated backward or forward to adjust the backrest angle.
The front end of the control arm 51 is connected to the fixed shaft 61, a fixed pin 53 is provided between the front end of the control arm 51 and the push hole 52, one end of the spring 37 is connected to the fixed pin 53, and the other end is connected to the rotary shaft 62.
The rotating shaft 62 and the fixed connecting piece 33 are assembled into a rotatable structure, the hinge shaft seat 36 is arranged on the rotating shaft 62, and the tail end of the control piece 34 is connected with the rotating shaft 62 and clamped in the middle by the hinge shaft seat 36, so that the control piece 34 is smoother and is not easy to skew when rotating up and down.
The fixed connector 33 is provided with an arc-shaped guide hole 332, the fixed cover 35 is provided with a guide pin 63, and the guide pin 63 is inserted into the guide hole 332 to form a guide limit structure when the movable connector 32 rotates, so that the back frame 4 (backrest) can be adjusted within a limited range and cannot fall forward or backward.
The latch 321 corresponds to an arc angle of 70-90 degrees, such as 85 degrees, so that the back frame 4 can be adjusted between approximately vertical and lying.
A fixing link 33 is provided at each of the left and right sides of the fixing cover 35 to further improve the stability of the rotation adjusting process, and a control arm 51 is provided at the outside of the fixing link 33 at one side thereof.
The housing 31 houses the control arm 51 and the fixed links 33 on both sides, the handle 5 is provided outside the housing 31, and the fixed shaft 61 and the rotary shaft 62 are connected to the housing 31.
The teeth of the latch 321 are ratchet teeth inclined toward one side, for example, inclined forward, so that the backrest can be adjusted forward without pressing the handle 5, and the backrest is pushed backward without moving, and the handle 5 is pressed first.
The utility model is particularly suitable for schools as student seats, and can provide comfortable noon break environment for students.
The foregoing detailed description of the utility model has been presented for purposes of illustration and description, but is not intended to limit the scope of the utility model, i.e., the utility model is not limited to the details shown and described.
Claims (10)
1. The mounting structure for realizing the adjustment of the backrest of the seat comprises a foot rest, a middle supporting tube, an adjusting mechanism and a back frame, wherein the middle supporting tube is arranged on the foot rest and positioned at the longitudinal middle position of the seat, and the back frame is arranged through the adjusting mechanism so as to realize the adjustment; the adjusting mechanism is connected with a handle, the handle is connected with a control arm, the control arm is connected with the adjusting mechanism, and the back frame is controlled to be adjusted through the operation handle, and the adjusting mechanism is characterized in that: the adjusting mechanism comprises a set of adjusting mechanisms which are arranged at the tail end of the middle supporting tube; the adjusting mechanism comprises a shell, a movable connecting piece, a fixed connecting piece and a control piece, wherein the movable connecting piece, the fixed connecting piece and the control piece are arranged in the shell, the fixed connecting piece is fixedly connected with the middle supporting tube, and the back frame is fixedly connected with the movable connecting piece; the movable connecting piece is arranged in the pair of fixed covers, the fixed covers and the movable connecting piece are assembled into a rotatable structure together through a fixed shaft and the fixed connecting piece, and the control arm is also arranged on the fixed connecting piece through the fixed shaft so as to realize rotation; the movable connecting piece is provided with a clamping tooth part which is integrally arc-shaped and extends out of the fixed cover from the side face;
the control piece is arranged into a rotatable structure opposite to the movable connecting piece through a rotating shaft, and is provided with an arc-shaped rack which is opposite to and clamped with the clamping tooth part of the movable connecting piece; the control arm is in butt joint with the control piece, and the arc-shaped rack of the control piece is pushed by the control arm to be separated from the latch part of the movable connecting piece so as to realize the rotation of the back frame; the control piece is connected with a spring, and the arc-shaped rack of the control piece is clamped with the clamping tooth part of the movable connecting piece through the elasticity of the spring to fix the back frame.
2. The mounting structure for effecting seat back adjustment as recited in claim 1, wherein: the fixed cover comprises a left half and a right half, the two halves of the fixed cover are oppositely combined to clamp the movable connecting piece in the middle to form an integral assembly, and the back frame is simultaneously connected and fixed with the fixed cover and the movable connecting piece; a notch is arranged at the bottom of the fixed cover, and the latch part extends out of the notch.
3. The mounting structure for effecting seat back adjustment as recited in claim 1, wherein: the side of the control piece is provided with a pushing pin, the positions of the fixed connecting piece and the control arm, which are opposite to the pushing pin, are respectively provided with a strip-shaped movable hole and a pushing hole, the pushing pin penetrates into the pushing hole through the movable hole, and the pushing pin is pressed down by the control arm through the handle to separate the control piece from the latch part of the movable connecting piece.
4. A mounting structure for effecting seat back adjustment as in claim 3, wherein: the front end of the control arm is connected with the fixed shaft, a fixed pin is arranged between the front end of the control arm and the pushing hole, one end of the spring is connected with the fixed pin, and the other end of the spring is connected with the rotating shaft.
5. The mounting structure for effecting seat back adjustment as recited in claim 4, wherein: the rotary shaft and the fixed connecting piece are assembled into a rotatable structure, the rotary shaft is provided with a hinge shaft seat, and the tail end of the control piece is connected with the rotary shaft and clamped in the middle by the hinge shaft seat.
6. The mounting structure for effecting seat back adjustment as recited in claim 2, wherein: the fixed connecting piece is provided with an arc-shaped guide hole, the fixed cover is provided with a guide pin, and the guide pin is inserted into the guide hole to form a guide limiting structure when the movable connecting piece rotates.
7. The mounting structure for effecting seat back adjustment as recited in claim 1, wherein: the arc angle corresponding to the latch part is 70-90 degrees.
8. The mounting structure for effecting seat back adjustment as recited in claim 6, wherein: the left side and the right side of the fixed cover are respectively provided with a fixed connecting piece, and the control arm is arranged at the outer side of the fixed connecting piece at one side.
9. The mounting structure for effecting seat back adjustment as recited in claim 8, wherein: the shell covers the control arm and the fixed connecting pieces at two sides inside, the handle is arranged outside the shell, and the fixed shaft and the rotating shaft are respectively connected with the shell.
10. The mounting structure for effecting seat back adjustment as recited in claim 1, wherein: the teeth of the latch part are ratchets inclined towards one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321821588.8U CN220384683U (en) | 2023-07-11 | 2023-07-11 | Mounting structure for realizing adjustment of seat backrest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321821588.8U CN220384683U (en) | 2023-07-11 | 2023-07-11 | Mounting structure for realizing adjustment of seat backrest |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220384683U true CN220384683U (en) | 2024-01-26 |
Family
ID=89603086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321821588.8U Active CN220384683U (en) | 2023-07-11 | 2023-07-11 | Mounting structure for realizing adjustment of seat backrest |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220384683U (en) |
-
2023
- 2023-07-11 CN CN202321821588.8U patent/CN220384683U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |