CN212325911U - Office chair chassis locking mechanism - Google Patents
Office chair chassis locking mechanism Download PDFInfo
- Publication number
- CN212325911U CN212325911U CN202020309224.1U CN202020309224U CN212325911U CN 212325911 U CN212325911 U CN 212325911U CN 202020309224 U CN202020309224 U CN 202020309224U CN 212325911 U CN212325911 U CN 212325911U
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- locking block
- locking
- bracket
- base
- office chair
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Abstract
The utility model discloses an office chair chassis locking mechanism, which comprises a base, a bracket for fixing a chair seat and a locking device, wherein the bracket is arranged above the base and is rotatably connected with the base, the locking device comprises a pull rod and a locking block positioned between the base and the bracket, the locking block comprises a first locking block and a second locking block, the pull rod slides in one of the base or the bracket and drives the second locking block to move synchronously, and the first locking block is fixed on the other of the bracket or the base; the base and the bracket are in a locking state and an unlocking state, and in the locking state, the first locking block and the second locking block are mutually abutted to prevent the movement trend of the bracket and the base; and in the unlocking state, the first locking block and the second locking block are staggered in position. By means of the locking mechanism, the base and the bracket can be easily and stably locked, so that the human body feels more comfortable when in use.
Description
Technical Field
The utility model relates to a thing to sit on field, in particular to office chair chassis locking mechanical system.
Background
The common office chair functional chassis consumers are not strange and can realize the tilting function, the lower end of the common office chair chassis is connected with an air rod, the upper end of the common office chair chassis supports the chair seat part, the tilting adjustment is realized through a pull rod arranged at the bottom of the side end of the chassis, the tilting locking of most office chairs on the market is realized only by inserting the head of the pull rod into a locking hole on a bracket, so that the movement of the bracket is limited, and the chassis is in a locking state; when the air rod slides rightwards to enable the head of the pull rod to leave the locking hole on the bracket, the bracket can move freely, and the chassis is in a tiltable state; however, in this structure, the locking hole on the bracket is a little far away from the left and right center positions, so that the left and right shaking gaps of the backrest and the seat cushion of the whole chair are different, and the right side is much larger than the left side; secondly in order to realize quick locking, the locking hole on the bracket can set up the size that is bigger than the pull rod more than 1mm, leads to the locking back fit clearance bigger than normal, can not make the human body realize the sensation of stable locking, and the people sits and can feel the back rock the clearance great on the chair, influences the comfort.
The Chinese utility model of CN201620791751.4 discloses a chair back wane locking mechanism for an office chair chassis, which comprises a locking plate, a bolt and a bolt seat, wherein the locking plate is provided with a row of lockholes, the locking plate synchronously rotates along with the wane of the office chair chassis, the bolt seat is arranged beside the locking plate and fixedly connected with a base of the office chair chassis, the bolt is slidably inserted on the bolt seat and matched with the lockholes, the bolt is connected with an elastic wire which generates elasticity when the form is changed, the elasticity of the elastic wire enables the bolt to be automatically inserted into the corresponding lockhole, and the elastic wire is connected with a driving device which drives the elastic wire; the utility model discloses an elastic wire controls the bolt and removes, and elastic wire is by drive arrangement control deformation, when drive arrangement drive elastic wire produced the change, makes elastic wire become the tilt state and produces elasticity from this, and the bolt keeps the situation of inserting the lockhole under the effect of elastic force, and when the lockplate rotated to the lockhole along with the wane and aligned with the bolt, the bolt inserted corresponding lockhole under the effect of elastic force, because the great difficult lockhole that inserts of bolt that makes of elastic resetting means power when having avoided the bolt directly along with adjusting lever simultaneous movement. Although the chassis locking structure can enable the bolt to be smoothly inserted into the lock hole, the locking of the chair back is realized by the insertion and matching of the bolt and the lock hole, the locking stability is not sufficient, and the structure is not simple enough.
Disclosure of Invention
The utility model overcomes exist not enough among the above-mentioned prior art, provide an office chair chassis locking mechanical system, this chassis locks through setting up first, second locking piece motion between to base and bracket on bracket and base, and this chassis simple structure and the stability after the locking are better.
The technical scheme of the utility model is realized like this:
a chassis locking mechanism of an office chair comprises a base, a bracket and a locking device, wherein the bracket is used for fixing a chair seat, the bracket is arranged above the base, the bracket is rotatably connected with the base, the locking device comprises a pull rod and a locking block positioned between the base and the bracket, the locking block comprises a first locking block and a second locking block, the pull rod slides in one of the base or the bracket and drives the second locking block to move synchronously, and the first locking block is fixed on the other of the bracket or the base; the base and the bracket are in a locking state and an unlocking state, and in the locking state, the first locking block and the second locking block are mutually abutted to prevent the movement trend of the bracket and the base; and in the unlocking state, the first locking block and the second locking block are staggered in position. By means of the locking mechanism, the base and the bracket can be easily and stably locked, so that the human body feels more comfortable when in use.
Preferably, the first locking block is connected and fixed on the bracket, the pull rod comprises an action rod arranged in the base in a penetrating mode and a control handle exposed out of the base, and the second locking block is installed on the action rod. The second locking block is controlled by the control handle, so that the use is rapid and convenient.
Preferably, the bracket comprises a fixed plate and connecting side plates extending downwards along two sides of the fixed plate, and the upper end of the first locking block is fixedly connected to the lower surface of the fixed plate; the second locking block is arranged below the first locking block, and the top surface of the second locking block and the bottom surface of the first locking block are inclined surfaces which can be mutually abutted and matched. The design that the butt joint face is the inclined plane can be better eliminated the locking clearance, improves the locking travelling comfort.
Preferably, the top surface of the second locking block and the slope surface on the bottom surface of the first locking block have the same slope, and the slope ranges from 2 degrees to 8 degrees. The slope of the inclined plane is small, so that the locking cannot be automatically released after locking, and the unlocking can be only operated by people.
Preferably, the base comprises a bottom plate and supporting side plates extending upwards along two sides of the bottom plate, a supporting flat plate is arranged at the front end of the bottom plate, and the bottom of the second locking block is located on the supporting flat plate. The supporting flat plate is arranged, so that the effect is better when the locking block is controlled.
Preferably, the second locking block is sleeved on the action rod, and the second locking block and the action rod are kept relatively fixed in the axial direction. The locking block and the action rod are relatively fixed in the axial direction, synchronous movement is achieved through pull control of the action rod, and the locking block is more convenient to use.
Preferably, the action rod is fixedly provided with a pressing sheet for controlling the air rod, the pressing sheet is provided with an avoiding groove, and the second locking block is positioned in the avoiding groove. By means of the arrangement of the avoiding groove, the second locking block is effectively compatible, and the avoiding groove can limit sliding of the second locking block.
Preferably, through holes are formed in the two supporting side plates, the two ends of the action rod penetrate through the through holes, and the supporting side plates support the action rod in a sliding mode.
Preferably, a through hole is formed in one of the supporting side plates, a supporting seat is correspondingly arranged on the bottom plate, the action rod penetrates through the through hole and then penetrates into the supporting seat, and the supporting side plates and the supporting seat jointly support the action rod in a sliding mode.
Preferably, the first and second locking blocks are made of plastic or metal. The material is easy to select, and the processing cost is saved.
Preferably, the first locking block is connected and fixed on the base, the pull rod penetrates through the bracket, and the pull rod slides in the bracket and drives the second locking block to move synchronously.
Adopted above-mentioned technical scheme the utility model discloses a design departure point, theory and beneficial effect are:
the utility model arranges the first locking block on the bracket and the second locking block which can slide under the control of the pull rod on the base, when the backrest can not lean against the bracket, namely the bracket needs to be locked, the pull rod is pushed to butt the second locking block and the first locking block, and the first locking block and the second locking block interact with each other to limit the rotation between the base and the bracket; the tilting locking is more stable, the shaking gap is eliminated, the sitting comfort of the human body is improved, and the whole structure is simple and easy to install; when the backrest is required to tilt, the pull rod is pulled out to enable the second locking block and the first locking block to be staggered in position, and the first locking block and the second locking block are not in contact any more when the bracket rotates, so that the bracket is not limited in rotation.
Drawings
Fig. 1 is a schematic perspective view of the base and the bracket in an inclined and locked state according to an embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is a schematic perspective view of the chassis and the bracket in an unlocked state according to embodiment 1 of the present invention;
FIG. 4 is an enlarged view of the portion B in FIG. 3;
fig. 5 is a schematic perspective view of the connection between the second locking block and the pull rod and the base in embodiment 1 of the present invention;
fig. 6 is a schematic perspective view of the lower chassis and the bracket of the present invention at another angle in an unlocked state according to embodiment 1;
FIG. 7 is an enlarged view of the portion C of FIG. 6;
fig. 8 is a schematic perspective view of a second locking block connected to a pull rod and a base according to embodiment 2 of the present invention;
FIG. 9 is an enlarged view of the portion D of FIG. 8;
the figures are numbered: a base 1; a bracket 2; a locking device 3; a fixed plate 4; connecting the side plates 5; a bottom plate 6; a support side plate 7; a pull rod 8; the first locking piece 9 a; a second locking block 9 b; an action lever 10; a control handle 11; a through hole 12; tabletting 13; a reinforcing bar 131; an avoidance slot 14; a support plate 15; a bevel 16; a support seat 17.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. 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 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 implementation manner of the utility model is as follows:
example 1:
as shown in fig. 1-9, the present invention provides a chassis locking mechanism for office chair, which comprises a base 1, a bracket 2 and a locking device 3.
First, the reference orientation of each component of the present embodiment is defined, and when the chassis and the office chair are normally installed and used, the chassis is in a horizontal position, and the base 1 is located below the bracket 2.
As shown in fig. 1-4, the bracket 2 and the base 1 are rotatably connected, specifically: the bracket 2 comprises a fixed plate 4 and connecting side plates 5 extending downwards along two sides of the fixed plate 4, and the base 1 comprises a bottom plate 6 and supporting side plates 7 extending upwards along two sides of the bottom plate 6; during installation, the bracket 2 is arranged above the base 1, the base 1 is arranged in the bracket 2, and the connecting side plate 5 is rotatably connected with the supporting side plate 7 through a rotating shaft.
As shown in fig. 1-7, the locking device 3 is disposed between the bracket 2 and the base 1, and the locking device 3 includes a pull rod 8 and first and second locking blocks 9a and 9b located between the base 1 and the bracket 2; the first locking block 9a is connected and fixed on the bracket 2, specifically: the upper end of the first locking block 9a is fixed on the lower surface of the fixing plate 4 through screw connection, and the first locking block 9a is positioned in the middle of the front end of the fixing plate 4; the pull rod 8 comprises an action rod 10 arranged in the base 1 in a penetrating way and a control handle 11 exposed out of the base 1, through holes 12 are formed in the two supporting side plates 7, the action rod 10 is arranged in the through holes 12 in a penetrating way, and the supporting side plates 7 play a role of sliding support on the action rod 10, so that the action rod 10 can slide on the base 1; second locking block 9b be located the below of first locking block 9a, second locking block 9b cover is established on action rod 10, and second locking block 9b and action rod 10 keep relatively fixed in the axial direction, specifically mean: firstly, the second locking block 9b is sleeved on the action rod 10, a pressing sheet 13 for controlling the air rod is fixed on the action rod 10, an avoiding groove 14 is pre-arranged at the middle position of the pressing sheet 13, during installation, namely, when one end of the pressing sheet 13 is contacted with the action rod 10, the second locking block 9b is just clamped in the avoiding groove 14, and at the moment, one end of the pressing sheet 13 is fixedly connected with the action rod 10 in a welding mode and the like, so that the second locking block 9b is limited to move axially along the action rod 10, and the second locking block 9b and the action rod 10 can move synchronously; while the second locking piece 9b and the action lever 10 can be allowed to rotate relative to each other in the circumferential direction, so that the action lever 10 does not interfere with the state of the second locking piece 9b when rotated.
Reinforcing bars 131 extend from the left side and the right side of the pressing sheet 13, and the reinforcing bars 131 are also welded and fixed with the action rod 10; and a supporting plate 15 is arranged at the front end of the bottom plate 6, the bottom of the second locking block 9b is positioned on the supporting plate 15, and the supporting plate 15 provides good supporting effect for the second locking block 9 b.
As shown in fig. 2, 4 and 7, the bottom surface of the first locking block 9a and the top surface of the second locking block 9b are provided with inclined surfaces 16 which can be mutually abutted and matched, and the inclined surfaces 16 on the top surface of the second locking block 9b and the bottom surface of the first locking block 9a have the same inclination, so that the gap between the locked bracket 2 and the base 1 can be effectively eliminated, and the overall comfort after locking is improved; usually, the inclination range is set to be 2 degrees to 8 degrees, a smaller inclination of the inclined plane is set, so that in a locking state, the first locking block 9a and the second locking block 9b cannot be automatically separated, the first locking block and the second locking block can be unlocked only through manual operation, machining errors of the chassis can be eliminated, the first locking block 9a and the second locking block 9b are usually made of plastics or metal, the first locking block and the second locking block have higher hardness, and a good locking effect can be provided.
As shown in fig. 1-4, when the base 1 and the bracket 2 need to be locked to prevent the seat from tilting, the control handle 11 is pushed to slide the action rod 10, so as to drive the second locking block 9b, so that the second locking block is located right below the first locking block 9a, as shown in fig. 1 and 2, the inclined surfaces 16 on the first and second locking blocks 9a and 9b are abutted against each other, and the interaction between the first and second locking blocks 9a and 9b can limit the base 1 from rotating upwards around the bracket 2; when unlocking is needed, only the control handle 11 needs to be pulled out, as shown in fig. 3 and 4, at this time, the second locking block 9b is staggered with the first locking block 9a, and the base 1 can rotate upwards around the bracket 2.
Example 2: the present embodiment is different from embodiment 1 in that: as shown in fig. 8 and 9, a through hole 12 is formed in one of the supporting side plates 7, a supporting seat 17 is correspondingly formed on the bottom plate 6, the supporting seat 17 includes a vertical plate 171, the bottom of the vertical plate 171 is fixedly connected to the bottom plate 6, a through hole 12 capable of being matched with the action rod 10 is formed in the vertical plate 171, and the action rod 10 is inserted into the through hole 12 of the supporting side plate 7 and the supporting seat 17; the supporting side plate 7 and the supporting seat 17 together have a sliding supporting function on the action rod 10, so that the action rod 10 can slide on the base 1.
Example 3: the present embodiment is different from embodiment 1 in that: pull rod 8 wear to establish in bracket 2, and pull rod 8 slides in bracket 2, specifically refer to: the pull rod 8 comprises an action rod 10 arranged in the bracket 1 in a penetrating way and a control handle 11 exposed out of the bracket 1, through holes 12 are formed in the two connecting side plates 5, the action rod 10 is arranged in the through holes 12 in a penetrating way, and the connecting side plates 7 play a role of sliding support on the action rod 10, so that the action rod 10 can slide on the bracket 1; meanwhile, the position of the action rod 10 is arranged to avoid the base 1, so that the action rod 10 is prevented from colliding with the base 1 when the bracket 2 rotates; the second locking block 9b is positioned above the first locking block 9a, the second locking block 9b is sleeved on the action rod 10, and the second locking block 9b and the action rod 10 are relatively fixed; the lower end of the first locking block 9a is fixed on the upper surface of the bottom plate 4 through screw connection.
Claims (11)
1. The office chair chassis locking mechanism is characterized by comprising a base, a bracket and a locking device, wherein the bracket is used for fixing a chair seat, the bracket is arranged above the base, the bracket is rotatably connected with the base, the locking device comprises a pull rod and a locking block positioned between the base and the bracket, the locking block comprises a first locking block and a second locking block, the pull rod slides in one of the base or the bracket and drives the second locking block to synchronously move, and the first locking block is fixed on the other of the bracket or the base; the base and the bracket are in a locking state and an unlocking state, and in the locking state, the first locking block and the second locking block are mutually abutted to prevent the movement trend of the bracket and the base; and in the unlocking state, the first locking block and the second locking block are staggered in position.
2. An office chair chassis locking mechanism according to claim 1, wherein: the first locking block is connected and fixed on the bracket, the pull rod comprises an action rod arranged in the base in a penetrating mode and a control handle exposed out of the base, and the second locking block is arranged on the action rod.
3. An office chair chassis locking mechanism according to claim 2, wherein: the bracket comprises a fixed plate and connecting side plates extending downwards along two sides of the fixed plate, and the upper end of the first locking block is fixedly connected to the lower surface of the fixed plate; the second locking block is arranged below the first locking block, and the top surface of the second locking block and the bottom surface of the first locking block are inclined surfaces which can be mutually abutted and matched.
4. An office chair chassis locking mechanism according to claim 3, wherein: the top surface of the second locking block and the inclined surface on the bottom surface of the first locking block have the same inclination, and the inclination ranges from 2 degrees to 8 degrees.
5. An office chair chassis locking mechanism according to claim 2, wherein: the base include the bottom plate and along the upwards support curb plate that extends of bottom plate both sides, the bottom plate front end be equipped with a support flat board, the bottom of second locking block be located support flat board.
6. An office chair chassis locking mechanism according to claim 2, wherein: the second locking block is sleeved on the action rod, and the second locking block and the action rod are kept relatively fixed in the axial direction.
7. An office chair chassis locking mechanism according to claim 6, wherein: the action rod is fixedly provided with a pressing sheet for controlling the air rod, the pressing sheet is provided with an avoiding groove, and the second locking block is positioned in the avoiding groove.
8. An office chair chassis locking mechanism according to claim 5, wherein: all be equipped with the through-hole on two support curb plates, action bar both ends wear to establish in the through-hole, support the curb plate and carry out the slip support to the action bar.
9. An office chair chassis locking mechanism according to claim 5, wherein: the through hole is formed in one of the supporting side plates, the supporting seat is correspondingly arranged on the bottom plate, the action rod penetrates through the through hole and then penetrates into the supporting seat, and the supporting side plates and the supporting seat jointly support the action rod in a sliding mode.
10. An office chair chassis locking mechanism according to claim 1, wherein: the first locking block and the second locking block are made of plastic or metal materials.
11. An office chair chassis locking mechanism according to claim 1, wherein: the first locking block is connected and fixed on the base, the pull rod penetrates through the bracket, and the pull rod slides in the bracket and drives the second locking block to move synchronously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020309224.1U CN212325911U (en) | 2020-03-12 | 2020-03-12 | Office chair chassis locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020309224.1U CN212325911U (en) | 2020-03-12 | 2020-03-12 | Office chair chassis locking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212325911U true CN212325911U (en) | 2021-01-12 |
Family
ID=74085727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020309224.1U Active CN212325911U (en) | 2020-03-12 | 2020-03-12 | Office chair chassis locking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212325911U (en) |
-
2020
- 2020-03-12 CN CN202020309224.1U patent/CN212325911U/en active Active
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