CN215382628U - High-reliability chair frame foot telescopic device - Google Patents
High-reliability chair frame foot telescopic device Download PDFInfo
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- CN215382628U CN215382628U CN202120548269.9U CN202120548269U CN215382628U CN 215382628 U CN215382628 U CN 215382628U CN 202120548269 U CN202120548269 U CN 202120548269U CN 215382628 U CN215382628 U CN 215382628U
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- splint
- gyro wheel
- guide rail
- groove
- chair frame
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- 239000002356 single layer Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000019994 cava Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model provides a high-reliability foot chair frame telescopic device which comprises a first connecting piece and a second connecting piece which move relatively, wherein the center of the plate surface of a first connecting rod is provided with a sliding groove, the sliding groove comprises a straight groove and a rotating groove, the bottom of the straight groove is provided with a raised guide rail, and two ends of the straight groove are provided with the rotating grooves; the second links includes first splint, second splint and gyro wheel, and the central authorities at first splint and second splint are installed to the gyro wheel, and first splint and second splint are located the both sides of first even piece respectively, and the gyro wheel is ridden on the guide rail and is followed the guide rail and roll, and when the gyro wheel was located the swivelling chute, the gyro wheel was located the circular arc bottom of swivelling chute and is sunken interior and revolve round its self centre of a circle rotatoryly. The utility model can effectively avoid the problem that the roller derails or falls off due to uneven stress on two sides of the roller, and can realize the function of relative rotation of two connecting pieces besides realizing parallel extension.
Description
Technical Field
The utility model relates to the field of chair frame production, in particular to a high-reliability chair frame foot telescopic device.
Background
The extendable function of sofas and chairs is common to meet the needs of people. The stretching mode can be that many connecting rods are riveted, and two connecting rods that rivet each other can rotate around the rivet each other, realize folding and the purpose that stretches at the pivoted in-process. However, the two connecting rods are easy to loosen only by the rotation of the rivet, and the height of one rotating end of each connecting rod is greatly changed in the rotation process, so that the two connecting rods are folded back and forth in the conventional sofa chair frame, and the two connecting rods are stretched back and forth by sliding through the pulleys and the sliding grooves. However, when the chair frame is extended, the chair frame is generally pressed down by the dead weight of a human body to be extended, the pulley at the extending structure is easily extruded outwards, the sliding groove is formed in the center of the connecting rod, the pulley is generally fixedly arranged on the outer side of the other connecting rod, and the pulley is broken and falls off due to the fact that one side of the pulley is damaged after a long time. In addition, the pedal of the chair frame not only needs to be extended, but also needs to adjust the angle between the two connecting rods frequently, so that the foot position can be adjusted conveniently, the comfort level of the chair frame can be improved, and therefore the traditional extending structure only capable of sliding in parallel can not meet the actual use requirement well, and a high-reliability chair frame foot extending and retracting device is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art and provides a high-reliability foot chair frame telescopic device.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a high-reliability foot chair frame telescopic device comprises a first connecting piece and a second connecting piece which move relatively, wherein the first connecting piece is of a single-layer plate-shaped structure, a sliding groove is formed in the center of the plate surface of a first connecting rod and comprises a straight groove and a rotating groove, the straight groove is a rectangular groove, a raised guide rail is arranged at the bottom of the straight groove, rotating grooves are formed in two ends of the straight groove, the rotating grooves are circular, and the arc bottoms of the rotating grooves are sunken; the second is double-deck platelike structure even, the second is even including first splint, second splint and gyro wheel, first splint with the second splint sets up relatively, install of gyro wheel the central authorities of first splint and second splint, the both sides of gyro wheel are fixed respectively first splint with on the face of second splint, first splint with the second splint are located respectively the both sides of first link, the gyro wheel is ridden on the guide rail and is followed the guide rail rolls, works as the gyro wheel is located during the swivelling chute, the gyro wheel is located in the circular arc bottom of swivelling chute is sunken and the centre of a circle rotation of its self is revolved.
Preferably, the periphery of the roller is in an inverted concave shape, and the concave part in the center of the roller is clamped and fixed on the convex guide rail and rides on the guide rail to roll.
Preferably, the top end of the guide rail is a round and blunt arc-shaped tip.
Preferably, the lowermost end of the rotary trough is located below the bottom end of the straight trough.
Preferably, a smooth circular arc transition structure is arranged between the rotating groove and the straight groove.
Preferably, the rollers are located at ends of the first clamping plate and the second clamping plate.
Preferably, the first clamping plate and the second clamping plate are connected through end welding at two ends.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model relates to a high-reliability foot chair frame telescopic device, which adopts a sliding groove and a roller to realize the extension between two connecting pieces, and divides the sliding groove into a straight groove and a rotating groove. The bottom end of the straight groove is provided with a raised guide rail, the roller rides on the straight groove to roll and apply force downwards, and the problem that two sides of the roller are unevenly stressed and are extruded outwards can be effectively prevented; and the structure design of the second even piece is double-deck plate-type structure, and the gyro wheel is installed between the double-deck plate, is different from common veneer structure, and the gyro wheel both sides all obtain effectual fixed, can effectively prevent gyro wheel skew or fracture. The rotary groove is internally provided with a sunken structure, and the two sides of the roller are clamped and fixed at the sunken part at the bottom of the rotary groove after reaching the rotary groove and rotate 360 degrees around the circle center of the roller in the rotary groove, so that the two connecting pieces rotate relatively, and the purpose of rotating the foot connecting piece of the chair frame is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of a highly reliable leg chair frame extension device;
FIG. 2 is a schematic top view of a highly reliable leg chair frame extension device.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1 and 2 in combination, a high-reliability leg chair frame extension device includes a first connecting piece 1 and a second connecting piece 2 which move relatively, the first connecting piece 1 is a single-layer plate-shaped structure, a sliding groove 11 is formed in the center of the plate surface of a first connecting rod, the sliding groove 11 includes a straight groove 111 and a rotating groove 112, the straight groove 111 is a rectangular groove, a raised guide rail 113 is arranged at the bottom of the straight groove 111, the rotating groove 112 is formed at two ends of the straight groove 111, the rotating groove 112 is circular, and the arc bottom of the rotating groove 112 is concave; the second even 2 is double-deck platelike structure, the second even 2 includes first splint 21, second splint 22 and gyro wheel 23, first splint 21 and second splint 22 set up relatively, the central authorities at first splint 21 and second splint 22 are installed to gyro wheel 23, the both sides of gyro wheel 23 are fixed respectively on the face of first splint 21 and second splint 22, first splint 21 and second splint 22 are located the both sides of first connecting piece 1 respectively, gyro wheel 23 rides on guide rail 113 and rolls along guide rail 113, when gyro wheel 23 is located the swivelling chute 112, gyro wheel 23 is located the circular arc bottom of swivelling chute 112 and caves in and revolves its self centre of a circle rotatoryly. Preferably, the first clamping plate 21 and the second clamping plate 22 are connected by welding at the ends of both ends.
The first connecting piece 1 and the second connecting piece 2 are connected through a roller 23 riding on a guide rail 113 to roll, the two connecting pieces extend or contract along with the forward and backward sliding of the roller 23 on the straight groove 111, when the roller 23 rotates in the rotating groove 112, the second connecting piece 2 rotates relative to the first connecting piece 1, and therefore the use effect that the foot structure of the chair frame can rotate along with the feet of a user when in use is achieved.
The structure design of second even 2 is double-deck plate-type structure, and gyro wheel 23 installs between the double-deck plate, is different from common veneer structure, and gyro wheel 23 both sides all obtain effectual fixed for gyro wheel 23 can keep its rolling gesture and direction when rolling, effectively prevents gyro wheel 23 skew or fracture. The bottom end of the straight groove 111 is provided with a raised guide rail 113, the roller 23 rides on the straight groove 111 to roll and apply force downwards, and the problem that two sides of the roller 23 are unevenly stressed and extruded outwards can be effectively prevented.
In one embodiment, the periphery of the roller 23 is inverted "concave", and the concave part in the center of the roller 23 is clamped on the convex guide rail 113 and rides on the guide rail 113 to roll, so that the roller 23 can be effectively fixed and prevented from derailing in the rolling process.
In one embodiment, the top end of the guide rail 113 is a rounded tip, so that the roller 23 can roll on the guide rail 113 to reduce resistance.
In a preferred embodiment, the lowest end of the rotary slot 112 is located below the bottom end of the straight slot 111, and after the roller 23 rolls from the straight slot 111 into the rotary slot 112 at the end, the height difference between the straight slot 111 and the rotary slot 112 acts as a fiber, which is beneficial to preventing the roller 23 from falling into the straight slot 111 again from the rotary slot 112 when rotating. When a user sits on the chair frame, the weight of the user presses the chair frame downwards, so that the roller 23 presses and extrudes the bottom end of the rotating groove 112 downwards, when the foot of the user slightly lifts up and reduces the pressure on the chair frame with the foot, the roller 23 slightly moves upwards and does not extrude and rub the bottom of the rotating groove 112 any more, and at the moment, when the user pushes the second connecting piece 2 by changing the posture of the foot, the second connecting piece 2 drives the roller 23 to rotate in the rotating groove 112. When the second connecting piece 2 needs to be retracted, the second connecting piece 2 is slightly and forcefully lifted, so that the roller 23 moves back to the straight groove 111 and moves reversely until the rotating groove 112 at the other end.
In an embodiment, a smooth circular arc transition structure is formed between the rotating groove 112 and the straight groove 111, so that the roller 23 can roll smoothly between the straight groove 111 and the rotating groove 112, and friction and scratch on the roller 23 are reduced.
In one embodiment, the rollers 23 are located at the ends of the first clamping plate 21 and the second clamping plate 22, so that the self length of the first connecting piece 1 and the second connecting piece 2 can be effectively utilized to increase the extension length of the chair frame.
From the above, after the structure of the high-reliability foot chair frame telescopic device is improved, the problem that the idler wheels derail or fall off due to uneven stress on the two sides of the idler wheels can be effectively solved, the function of relative rotation of the two connecting pieces can be realized besides parallel extension, the use method is simple, the production cost is low, and the effect is obvious.
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the utility model. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.
Claims (7)
1. The utility model provides a foot chair frame telescoping device of high reliability which characterized in that: the guide rail type rotary table comprises a first connecting piece and a second connecting piece which move relatively, wherein the first connecting piece is of a single-layer plate-shaped structure, a sliding groove is formed in the center of the plate surface of the first connecting piece and comprises a straight groove and a rotary groove, the straight groove is a rectangular groove, a raised guide rail is arranged at the bottom of the straight groove, the rotary grooves are formed in two ends of the straight groove, the rotary grooves are circular, and the arc bottoms of the rotary grooves are sunken; the second is double-deck platelike structure even, the second is even including first splint, second splint and gyro wheel, first splint with the second splint sets up relatively, install of gyro wheel the central authorities of first splint and second splint, the both sides of gyro wheel are fixed respectively first splint with on the face of second splint, first splint with the second splint are located respectively the both sides of first link, the gyro wheel is ridden on the guide rail and is followed the guide rail rolls, works as the gyro wheel is located during the swivelling chute, the gyro wheel is located in the circular arc bottom of swivelling chute is sunken and the centre of a circle rotation of its self is revolved.
2. The highly reliable leg chair frame extension and retraction device according to claim 1, wherein: the periphery of the roller is in an inverted concave shape, and the concave part in the center of the roller is clamped and fixed on the convex guide rail and rides on the guide rail to roll.
3. The highly reliable leg chair frame extension and retraction device according to claim 1, wherein: the top end of the guide rail is a blunt arc-shaped tip.
4. The highly reliable leg chair frame extension and retraction device according to claim 1, wherein: the bottommost end of the rotating groove is located below the bottom end of the straight groove.
5. The highly reliable leg chair frame extension and retraction device according to claim 1, wherein: and a smooth circular arc transition structure is arranged between the rotary groove and the straight groove.
6. The highly reliable leg chair frame extension and retraction device according to claim 1, wherein: the rollers are located at the ends of the first clamping plate and the second clamping plate.
7. The highly reliable leg chair frame extension and retraction device according to claim 1, wherein: the first clamping plate and the second clamping plate are connected through the end parts at two ends in a welding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120548269.9U CN215382628U (en) | 2021-03-17 | 2021-03-17 | High-reliability chair frame foot telescopic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120548269.9U CN215382628U (en) | 2021-03-17 | 2021-03-17 | High-reliability chair frame foot telescopic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215382628U true CN215382628U (en) | 2022-01-04 |
Family
ID=79668970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120548269.9U Expired - Fee Related CN215382628U (en) | 2021-03-17 | 2021-03-17 | High-reliability chair frame foot telescopic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215382628U (en) |
-
2021
- 2021-03-17 CN CN202120548269.9U patent/CN215382628U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220104 |
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| CF01 | Termination of patent right due to non-payment of annual fee |