CN106913104B - Pedal device of enclasping mechanism and chair - Google Patents
Pedal device of enclasping mechanism and chair Download PDFInfo
- Publication number
- CN106913104B CN106913104B CN201511034324.8A CN201511034324A CN106913104B CN 106913104 B CN106913104 B CN 106913104B CN 201511034324 A CN201511034324 A CN 201511034324A CN 106913104 B CN106913104 B CN 106913104B
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- China
- Prior art keywords
- sleeve
- pressing block
- rubber sheet
- outer sleeve
- inner sleeve
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/50—Supports for the feet or the legs coupled to fixed parts of the chair
- A47C7/506—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
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- Chairs Characterized By Structure (AREA)
Abstract
The invention discloses a clasping mechanism and a pedal device of a chair, wherein the clasping mechanism comprises a main shaft, an inner sleeve and an outer sleeve; the upper end of the inner sleeve is provided with a plurality of grooves to form a plurality of fins distributed in the circumferential direction, two sides of the outer surface of each fin are respectively provided with grooves, a pressing block is arranged in each groove, the left side and the right side of each pressing block are respectively provided with a clamping foot which is clamped in each groove, the inner surface of each pressing block is embedded with a rubber sheet, and the outer surface of each pressing block has a gradient; the outer sleeve is provided with an inclined plane inner hole matched with the gradient of the outer surface of the pressing block, the upper end of the inner sleeve is inserted into the inner hole of the outer sleeve, and when the inner sleeve moves upwards or the outer sleeve moves downwards, the outer sleeve can squeeze the pressing block, so that the pressing block inwards presses the rubber sheet, and the rubber sheet is tightly attached to the main shaft. The pressing block is not rooted in the inner sleeve, the movement of the pressing block is more free, and the whole pressing block and the rubber sheet are forced to move in parallel to the center when being matched with the inclined plane, so that the upward and downward holding force of the pressing block and the rubber sheet is uniform.
Description
Technical Field
The invention relates to the technical field of swivel chairs and office chairs, in particular to a clasping mechanism and a pedal device of a chair.
Background
Existing chairs, in particular children chairs, are generally provided with a circular pedal connected to a central sleeve by means of a bracket, the central sleeve being fastened to a gas lever (also called a spindle) by means of a single-point compression fastening, i.e. by means of the central sleeve being fitted to a C-shaped sleeve and a threaded hole being made in the central sleeve, a knob with a threaded rod being inserted into the threaded hole and screwed gradually, when the knob is screwed, pressing the C-shaped sleeve, forcing it to be fastened to the gas lever, this fastening being not only complicated and laborious in terms of rotary locking, but also having the following drawbacks: the C-shaped sleeve is made of rubber materials, the air rod can be tightly tied only by adopting the rubber material design, when the knob is used for tightly pressing the C-shaped sleeve, the surface of the C-shaped sleeve is damaged, and the tightening function can be lost after the C-shaped sleeve is used for a long time; moreover, the air rod is indirectly pressed, so that the air rod is deformed, and the lifting function of the circular pedal ring is further affected; furthermore, the circular pedals and the bracket can incline and shake, and the use is dangerous.
U.S. Pat. No. 5, 4948149 discloses a net post for a net, which is composed of hollow tubes 11 and 12 in a sleeved mode, wherein the hollow tube 11 can be lengthened or contracted to adjust the whole height, a clasping mechanism is arranged at the connecting position of the two hollow tubes 11 and 12, the clasping mechanism comprises a linear pressing element 21 and an outer sleeve 22, a plurality of grooves are formed in the linear pressing element 21 to form a plurality of pressing plates 213 separated at intervals, the pressing plates 213 can elastically deform, the linear pressing element 21 is in threaded connection with the outer sleeve 22 and are in inclined plane fit with the outer sleeve 22, after the height is adjusted, the inner surface of the outer sleeve 22 is screwed tightly to press the pressing plates 213, so that the pressing plates 213 press the hollow tube 11 to achieve the purpose of clasping, and the positions of the hollow tubes 11 and 12 are relatively fixed.
The clasping mechanism can also be applied to a pedal device of a chair, so that the pedal device is changed from a single-point compressing mode to a circumferential clasping mode, but compared with a hollow pipe, the pedal device is obviously heavy in weight born by the foot and the leg of a person, and the air rod is smooth, so that the friction force between the pressing plate 213 and the air rod is insufficient, and the pedal device can fall off, so that the requirements of testing and use can not be met; the rubber sheet is additionally arranged on the inner surface of the pressing plate to increase friction force, but the effect is still not ideal, because one end of the pressing plate is long on the linear pressing element and is fixed, the other end of the pressing plate is a free end, when the pressing plate is in pressing fit with the inclined surface of the outer sleeve, the pressing plate deforms up and down differently, namely, the free end deforms more than the fixed end, so that the holding force of the fixed end is smaller than that of the free end, the holding force is uneven up and down, the holding effect is not good enough, and the pressing plate is not very stable in use.
Disclosure of Invention
The invention overcomes the defects in the prior art, and provides the clasping mechanism which can lead the rubber sheet to be tightly attached up and down and the pedal device of the chair, the clasping mechanism skillfully utilizes the gap of the groove, the movable pressing block with the rubber sheet is arranged in the groove, the pressing block is hung on the inner sleeve through the clamping feet at the two sides, the thickness of the pressing block and the positions of the clamping feet and the grooves can be flexibly arranged according to actual needs, and the pressing block is not planted on the inner sleeve, so that the activity degree is high, the whole pressing block and the rubber sheet are integrally parallel to move towards the center in a forced manner when being matched on an inclined plane, the pressing block and the rubber sheet are tightly attached to the main shaft, the clasping force up and down is even, the clasping effect is better, the clasping effect is greatly exerted in actual use, and the pedal device can firmly clasp the air bar.
The technical scheme of the invention is realized as follows:
a hugging mechanism comprises a main shaft, an inner sleeve and an outer sleeve; the upper end of the inner sleeve is provided with a plurality of grooves to form a plurality of fins distributed in the circumferential direction, grooves are respectively arranged on two sides of the outer surface of each fin, a pressing block is arranged in each groove, clamping feet are respectively arranged on the left side and the right side of each pressing block, the clamping feet are clamped in the grooves, a rubber sheet is inlaid on the inner surface of each pressing block, and the outer surface of each pressing block has a gradient; the outer sleeve is provided with an inner hole with an inclined plane matched with the gradient of the outer surface of the pressing block, the upper end of the inner sleeve is inserted into the inner hole of the outer sleeve, and when the inner sleeve moves upwards or the outer sleeve moves downwards, the outer sleeve with the inclined plane inner hole can squeeze the pressing block, so that the pressing block inwards presses the rubber sheet, the rubber sheet is tightly attached to the main shaft, and the purpose of holding and fixing is achieved.
Preferably, two grooves are symmetrically arranged on two sides of the outer surface of each fin, two clamping feet are symmetrically arranged on the left side and the right side of the pressing block, and the clamping feet and the pressing block are integrally formed. The pressing block is matched with the grooves of the fins through the clamping pins, and the inner sleeve is hung in the axial direction, so that the inner sleeve is synchronously fixed in the axial direction when the pressing block presses the main shaft.
Preferably, the rubber sheet has a width equal to the width of the groove.
Preferably, the width of the rubber sheet is larger than that of the groove, and the two sides of the rubber sheet are staggered with the fins on the two sides of the groove. The mode can enable the inner side of the pressing block to be clamped on the fins through the two ends of the rubber sheet, and the outer side of the pressing block to be clamped in the groove through the clamping pin, so that the purpose of being fixed in the groove is achieved, the pressing block is not easy to fall off during assembly, and the pressing block is quite convenient.
Preferably, the outer surface of the fins is also sloped for easier engagement with the beveled inner bore of the outer sleeve.
The press block deforms when being pressed, so that enough space is reserved for the clamping legs to extend, and preferably, the width of the groove is larger than that of the clamping legs.
In order to facilitate the installation of the rubber sheet and enable the rubber sheet to be stably fixed on the pressing block, preferably, a positioning hole is formed in the pressing block, a positioning column is arranged on the rubber sheet, and the positioning column is inserted into the positioning hole and in interference fit with the positioning hole.
In order to reduce the cost and the weight, the inner sleeve and the outer sleeve are preferably made of plastics.
The invention further provides a pedal device of a chair, which comprises a circular pedal ring, a bracket, a central sleeve and the enclasping mechanism, wherein the central sleeve is cylindrical, the diameters of the inner holes of the central sleeve from top to bottom are the same, the outer sleeve is arranged in the central sleeve and is axially and fixedly connected with the central sleeve, the lower end of the central sleeve is provided with an internal thread, the lower end of the inner sleeve is provided with an external thread, and the inner sleeve is upwards inserted into the central sleeve and is in threaded connection with the central sleeve; when the inner sleeve rotates to move upwards or the central sleeve rotates to move downwards, the outer sleeve with the inclined inner hole can squeeze the pressing block, so that the pressing block inwards presses the rubber sheet, the rubber sheet is tightly attached to the main shaft, and the purpose of holding and fixing is achieved.
Preferably, the axially fixed connection of the outer sleeve and the central sleeve means: the upper end of the central sleeve is provided with an inward flanging, the upper end of the outer sleeve is provided with a plurality of outward-flanging elastic claws, the pipe edge of the upper end of the outer sleeve butts against the lower end face of the inward-flanging, and the elastic claws hook the upper end face of the inward-flanging.
Preferably, a screwing handle is formed at the bottom end of the inner sleeve.
The design theory and beneficial effects of the invention adopting the technical scheme are as follows:
the invention adopts a mode of circumferentially enclasping the inner sleeve, namely an average compaction mode of the whole annular surface instead of single-point compaction, so that the inner sleeve and the main shaft are not damaged, the service life of the inner sleeve can be prolonged, the stability of the circular pedal ring is increased, and the phenomenon of inclination or shaking is avoided.
More importantly, the movable pressing block with the rubber sheet is arranged in the groove, the inner sleeve is hung by the clamping feet on two sides of the pressing block, the thickness of the pressing block, the clamping feet and the positions of the grooves can be flexibly arranged according to actual needs, the pressing block is not planted in the inner sleeve, the movement is more free, the whole pressing block and the rubber sheet are forced to move in parallel when the inclined planes are matched, the parallel movement means that the pressing block moves up and down with the same distance, so that the pressing block and the rubber sheet have even up and down cohesion, the cohesion effect is better, the cohesion effect is greatly exerted in actual use, and the pedal device can firmly clasp the main shaft.
Further, the support comprises a plurality of connecting rods, one ends of the connecting rods are connected with the circular pedal ring through bolts, the other ends of the connecting rods are welded and fixed with the central sleeve, deformation is easy to occur in the central sleeve during welding and fixing, and if the inclined plane inner hole is directly arranged on the central sleeve, the precision of the inclined plane inner hole is affected, and the taper fit is affected; the invention separates the central sleeve from the outer sleeve with the inclined inner hole, the central sleeve plays the role of connecting and fixing the circular pedal ring, the outer sleeve plays the role of matching with the inclined surface of the inner sleeve, and the phenomenon of unsmooth matching caused by deformation generated during welding of the central sleeve is avoided.
Still further, the rubber sheet on the briquetting is crisscross with the fin of briquetting place slot both sides to set up, and this kind of mode can make the briquetting inboard pass through the rubber sheet both ends card on the fin, and the briquetting outside passes through the card foot card in the recess, has reached the purpose of fixing in the slot, also be difficult for droing when the assembly, and is very convenient.
By adopting the structural design of the invention, the outer surface of the fin can have a gradient or can have no gradient, and the fin can jointly play a role with the pressing block to hold the main shaft when the fin has a gradient; and in the non-gradient design, the function of hanging the pressing block is exerted.
The screw-on handle is formed at the bottom end of the inner sleeve, so that the screw-on handle is convenient for a person to operate, and the circular pedal ring can be kept motionless and rotate the inner sleeve during operation; the inner sleeve can be fixed and the circular pedal ring can be rotated; the method is very convenient, provides two different operation choices for different crowds, and fully meets the operation requirements of various crowds.
Drawings
FIG. 1 is a schematic view of the structure of an inner sleeve according to the present invention;
FIG. 2 is a schematic diagram of the split structure of the inner sleeve and a single pressing block, and a rubber sheet;
FIG. 3 is a schematic diagram of a separation structure of a pressing block and a rubber sheet;
FIG. 4 is an assembly view of the inner sleeve and the press block, and the rubber sheet;
FIG. 5 is an exploded view of the inner sleeve and the briquette, rubber sheet;
FIG. 6 is a schematic view of the mating state of the clasping mechanism of the present invention;
FIG. 7 is a schematic view of the pedal apparatus of the present invention in a released state;
FIG. 8 is a schematic view of the pedal apparatus of the present invention in a tightened state;
FIG. 9 is a schematic view of the mating structure of the outer sleeve and the center sleeve;
FIG. 10 is a schematic view of the mating structure of the circular tread ring, the bracket, the center sleeve and the outer sleeve;
FIG. 11 is an exploded view of the pedal apparatus of the present invention.
Detailed Description
The specific embodiments of the present invention are as follows:
examples: firstly, defining the direction, the description of the direction of the invention is based on the description that the clasping mechanism and the pedal device are arranged on the chair in a normal use state, and the inner sleeve is positioned at the lower end of the outer sleeve and the two are spliced together.
1-6, including the main shaft 1, inner sleeve 2 and outer sleeve 3, when applied to the chair, the main shaft 1 is also referred to as the air bar, the inside and outside are relative, in the invention, the inner sleeve is not completely sleeved in the outer sleeve, only the upper end of the inner sleeve is inserted in the outer sleeve; the inner sleeve 2 and the outer sleeve 3 are made of nylon materials, a plurality of grooves 4 are formed in the upper end of the inner sleeve 2, a plurality of fins 5 which are distributed circumferentially and can generate elastic deformation are formed, two basically square grooves 6 are symmetrically formed in the left side and the right side of the outer surface of each fin 5, a pressing block 7 is arranged in each groove 4, two clamping feet 8 are symmetrically arranged in the left side and the right side of each pressing block 7, the clamping feet 8 and the pressing blocks 7 are integrally formed, the clamping feet 8 are clamped in the grooves 6, and in the horizontal direction, the width of each groove 6 is larger than that of each clamping foot 8, so that the clamping feet 8 can extend to two sides when the pressing blocks 7 deform under pressure; the inner surface of the pressing block 7 is embedded with a rubber sheet 9, and the outer surface of the pressing block 7 is provided with a slope 22; the outer sleeve 3 is provided with an inner hole 11 with an inclined surface 10 matched with the slope 22 on the outer surface of the pressing block 7, the upper end of the inner sleeve 2 is inserted into the inner hole 11 of the outer sleeve and matched with the inclined surface 10, when the inner sleeve 2 moves upwards or the outer sleeve 3 moves downwards, the outer sleeve 3 with the inner hole of the inclined surface can squeeze the pressing block 7, and then the pressing block 7 inwards presses the rubber sheet 9, so that the rubber sheet is tightly attached to the main shaft 1, and the purpose of holding and fixing is achieved.
Specifically, as shown in fig. 4, the width of the rubber sheet 9 is larger than the width of the groove 4, and two sides of the rubber sheet 9 are staggered with the fins 5 at two sides of the groove 4; the pressing block 7 is provided with a positioning hole 12, the rubber sheet 9 is provided with a positioning column 13, and the positioning column 13 is inserted into the positioning hole 12 and is in interference fit with the positioning hole 12.
7-11, including circular pedal ring 13, support 14, central sleeve 15 and above-mentioned clasping mechanism, support 14 is made up of multiple connecting rods 23, one end of the connecting rod 23 couples to circular pedal ring 13 through the bolt, another end of the connecting rod 23 welds fixedly with central sleeve 15, the said central sleeve 15 takes the form of cylinder, the hole from top to bottom central sleeve 15 has the same diameter everywhere, the outer tube 3 is set up in the upper portion of the central sleeve 15 and fixedly connected with central sleeve 15 axially, the lower end of the central sleeve 15 has internal screw threads 16, the lower end of the inner tube 2 has external screw threads 17, the inner tube 2 is inserted into the central sleeve 15 and screwed with central sleeve 15 upwardly; the bottom end of the inner sleeve 2 is formed with a screwing handle 18.
As shown in fig. 9 and 10, the axial fixed connection between the outer sleeve 3 and the central sleeve 15 means: the upper end of the center sleeve 15 is provided with an inward flanging 19, the upper end of the outer sleeve 3 is provided with a plurality of outward-turned elastic claws 20, a pipe edge 21 at the upper end of the outer sleeve 3 abuts against the lower end face of the inward-flanging 19, and the elastic claws 20 hook the upper end face of the inward-flanging 19 so that the upper end of the outer sleeve 3 is fixedly clamped with the inward-flanging 19 of the center sleeve 15 without separating from the center sleeve 15.
In specific application, as shown in fig. 8, the circular pedal ring 13 is fixed, the inner sleeve 2 rotates and moves upwards, the outer sleeve 3 with the inclined plane inner hole 11 can squeeze the pressing block 7, so that the pressing block 7 presses the rubber sheet 9 inwards to be tightly attached to the main shaft 1, the purpose of holding tightly and fixing is achieved, and the pressing block 7 is used for hanging the inner sleeve 2 through the clamping pin 8, and meanwhile, the inner sleeve 2 is in threaded connection with the central sleeve 15, so that the circular pedal ring 13 and the central sleeve 15 are integrally fixed at a certain position of the main shaft 1; on the contrary, as shown in fig. 7, when the height of the circular pedal ring 13 needs to be adjusted, the inner sleeve 2 is screwed in the opposite direction, so that the inner sleeve 2 drives the pressing block 7 and the rubber sheet 9 to move downwards integrally and gradually separate from the inclined plane inner hole 11 of the outer sleeve 3, the inclined plane of the inner hole 11 does not exert the pressing action, the pressing block 7 and the rubber sheet 9 are reset, the main shaft 1 is not held tightly, and the height of the circular pedal ring 13 can be adjusted at the moment.
Claims (5)
1. A hugging mechanism, which is characterized in that: comprises a main shaft, an inner sleeve and an outer sleeve; the upper end of the inner sleeve is provided with a plurality of grooves to form a plurality of fins distributed in the circumferential direction, grooves are respectively arranged on two sides of the outer surface of each fin, a pressing block is arranged in each groove, clamping feet are respectively arranged on the left side and the right side of each pressing block, the clamping feet are clamped in the grooves, a rubber sheet is inlaid on the inner surface of each pressing block, and the outer surface of each pressing block has a gradient; the outer sleeve is provided with an inner hole with an inclined plane matched with the gradient of the outer surface of the pressing block, the upper end of the inner sleeve is inserted into the inner hole of the outer sleeve, and when the inner sleeve moves upwards or the outer sleeve moves downwards, the outer sleeve with the inclined plane inner hole can squeeze the pressing block, so that the pressing block inwards presses the rubber sheet, and the rubber sheet is tightly attached to the main shaft, so that the purpose of holding and fixing is achieved; the clamping foot and the pressing block are integrally formed, the width of the rubber sheet is larger than that of the groove, the two sides of the rubber sheet and the fins on the two sides of the groove are arranged in a staggered mode, the outer surface of each fin is also provided with a slope, the width of the groove is larger than that of the clamping foot, the pressing block is provided with a positioning hole, the rubber sheet is provided with a positioning column, and the positioning column is inserted into the positioning hole and in interference fit with the positioning hole.
2. A clasping mechanism in accordance with claim 1 wherein: the inner sleeve and the outer sleeve are both made of plastic.
3. The pedal device of the chair is characterized by comprising a circular pedal ring, a bracket, a central sleeve and the enclasping mechanism as claimed in any one of claims 1-2, wherein the central sleeve is cylindrical, the diameters of the inner holes of the central sleeve from top to bottom are the same, the outer sleeve is arranged in the central sleeve and is axially and fixedly connected with the central sleeve, the lower end of the central sleeve is provided with an internal thread, the lower end of the inner sleeve is provided with an external thread, and the inner sleeve is upwards inserted into the central sleeve and is in threaded connection with the central sleeve; when the inner sleeve rotates to move upwards or the central sleeve rotates to move downwards, the outer sleeve with the inclined inner hole can squeeze the pressing block, so that the pressing block inwards presses the rubber sheet, the rubber sheet is tightly attached to the main shaft, and the purpose of holding and fixing is achieved.
4. A footrest apparatus for a chair according to claim 3, wherein: the outer sleeve and the central sleeve are axially and fixedly connected: the upper end of the central sleeve is provided with an inward flanging, the upper end of the outer sleeve is provided with a plurality of outward-flanging elastic claws, the pipe edge of the upper end of the outer sleeve butts against the lower end face of the inward-flanging, and the elastic claws hook the upper end face of the inward-flanging.
5. A footrest apparatus for a chair according to claim 3, wherein: the bottom end of the inner sleeve is provided with a screwing handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511034324.8A CN106913104B (en) | 2015-12-26 | 2015-12-26 | Pedal device of enclasping mechanism and chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511034324.8A CN106913104B (en) | 2015-12-26 | 2015-12-26 | Pedal device of enclasping mechanism and chair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106913104A CN106913104A (en) | 2017-07-04 |
| CN106913104B true CN106913104B (en) | 2023-07-25 |
Family
ID=59456302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511034324.8A Active CN106913104B (en) | 2015-12-26 | 2015-12-26 | Pedal device of enclasping mechanism and chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106913104B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110897407A (en) * | 2019-10-10 | 2020-03-24 | 东莞濠文塑胶五金制品有限公司 | Pedal ring height adjusting and locking mechanism |
| IT202000014356A1 (en) * | 2020-06-16 | 2021-12-16 | Donati Spa | HEIGHT-ADJUSTABLE FOOTRESTS FOR A CHAIR, AN ARMCHAIR OR A STOOL |
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| US7387343B1 (en) * | 2007-02-22 | 2008-06-17 | Kun-Yu Hsieh | Constricting device for the footrest ring of a chair |
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| Publication number | Publication date |
|---|---|
| CN106913104A (en) | 2017-07-04 |
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