CN213330203U

CN213330203U - Automatic folding metal stand with extensible seat

Info

Publication number: CN213330203U
Application number: CN202021906247.7U
Authority: CN
Inventors: 董修建
Original assignee: Jiangxi Mingchuan Infrastructure Co ltd
Current assignee: Jiangxi Mingchuan Infrastructure Co ltd
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2021-06-01
Anticipated expiration: 2030-09-03

Abstract

The utility model provides an automatic folding metal stand that seat can extend, including metal stand and seat, the seat is connected with the top surface of metal stand, the seat is including extension subassembly, supporting component and power component, the extension subassembly is including the gear, the bilateral symmetry of gear is equipped with sawtooth rack, two sawtooth rack all meshes with the gear mutually, every the one end of sawtooth rack has all alternate the tensioning roller, the supporting component is including four supporting seats, with one side two the supporting seat is fixed in respectively with one side tensioning roller both ends, with one side two be fixed with the material loading roller, two between the supporting seat be connected with seat cloth between the material loading roller, seat cloth both ends twine respectively in two on the material loading roller. The utility model discloses an extension subassembly, supporting component and power component's cooperation to adjust the width of seat, enlarged the suitability of seat, improved spectator's viewing experience.

Description

Automatic folding metal stand with extensible seat

Technical Field

The utility model mainly relates to the technical field of metal stands, in particular to an automatic folding metal stand with an extensible seat.

Background

The stand generally refers to a support stand and a seat that are provided to viewers for viewing during large collective activities such as sports and entertainment.

According to the patent document with the application number of CN202010453413.0, an automatic folding type movable metal stand with a turnover plate type seat and an awning is provided, and the automatic folding type movable metal stand comprises a chassis, an upper stand, a lower stand, a turnover type seat, the awning, a safety guardrail, rubber tires and an energy storage type power unit; go up stand, lower stand and pass through the relevant linkage of pneumatic cylinder and triangular supports connecting piece, intermediate junction spare, supporting leg gangbar, first seat gangbar, second seat gangbar, third seat linkage piece, make portable metal stand possess full-automatic folding function, need not the substep operation, this product installation supporting leg, stability is good, and can realize full-automatic board-turning type seat and the sunshade of receiving and releasing in this product of function, automatic folding is opened and is used, normal use under the adaptation many climatic conditions.

However, the metal stand has drawbacks, for example, although the metal stand has the advantages of being suitable for different climates, the seat of the metal stand is difficult to adjust the width, so that the seat is difficult to adapt to audiences with different sizes, and the viewing experience of the audiences is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model mainly provides an automatic folding metal stand with an extensible seat for solving the technical problem provided in the background technology.

The utility model provides a technical scheme that above-mentioned technical problem adopted does:

an automatic folding metal stand with an extensible seat comprises a metal stand and a seat, wherein the seat is connected with the top end surface of the metal stand, the seat comprises an expansion assembly, a supporting assembly and a power assembly, the expansion assembly comprises a gear, the gear is rotatably connected with the top end surface of the metal stand through a rotating shaft, saw-toothed strips are symmetrically arranged on two sides of the gear, the two saw-toothed strips are meshed with the gear, the bottom end surface of each saw-toothed strip is abutted to the top end surface of the metal stand, one end of each saw-toothed strip is provided with a tensioning roller in an inserted mode, the tensioning rollers are arranged symmetrically by taking the gear as a central shaft, the supporting assembly comprises four supporting seats, the bottom end of each supporting seat is abutted to the top end surface of the metal stand, the supporting seats are arranged symmetrically by taking the gear as two central shafts, with one side two the supporting seat is fixed in respectively with one side tensioning roller both ends are with one side two be fixed with the material loading roller between the supporting seat, two be connected with the seat cloth between the material loading roller, the seat cloth both ends twine respectively in two on the material loading roller.

Furthermore, power component is including the worm wheel, the worm wheel is located the gear bottom and with the coaxial setting of gear, one side meshing of worm wheel is connected with the worm, the both ends of worm all through the bearing frame with the top surface meshing of metal stand is connected.

Furthermore, the worm rotates through the subassembly of exerting oneself, the subassembly of exerting oneself includes the telescopic link, the telescopic link is fixed in the one end peripheral face of worm, the telescopic link is kept away from the one end of worm is fixed with the handle.

Furthermore, a ball joint is embedded in the surface of one side of the handle, and a handle is fixed at one end of the ball joint.

Furthermore, a groove matched with the handle is formed in the surface of one side, close to the handle, of the handle.

Furthermore, each feeding roller is sleeved with a coil spring and connected with seat cloth through the coil spring.

Furthermore, four top angles on the bottom surfaces of the supporting seat and the sawtooth racks are rotatably connected with rotating wheels through rotating shafts.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses can adjust the width of seat, thereby the suitability of seat has been enlarged, spectator's viewing experience has been improved, through extension subassembly, supporting component and power component's cooperation, when making the great spectator of size drive the gear among the extension subassembly through the handle among the power component and rotate, because gear and two sawtooth racks mesh mutually, thereby drive two sawtooth racks and slide on the top surface of metal stand towards the mutually opposite directions of carrying on the back each other, because the tensioning roller on the sawtooth rack is connected with the material loading roller through the supporting seat among the supporting component, make the part of seat cloth both ends winding on the material loading roller constantly pull out, until the seat cloth stretches tight to the limit, thereby utilize the seat cloth that stretches tight to provide the support for spectator.

The present invention will be explained in detail with reference to the drawings and specific embodiments.

Drawings

Fig. 1 is a schematic overall structure diagram of the present invention;

FIG. 2 is a schematic structural view of the chair of the present invention;

fig. 3 is an exploded view of the seat of the present invention;

fig. 4 is a schematic structural view of the force application assembly of the present invention.

In the figure: 1. a metal stand; 2. a seat; 21. an expansion component; 211. a gear; 212. a sawtooth strip; 213. a tension roller; 22. a support assembly; 221. a supporting seat; 222. a feeding roller; 223. A rotating wheel; 224. a seat cloth; 225. a coil spring; 23. a power assembly; 231. a worm gear; 232. A worm; 24. a force application assembly; 241. a telescopic rod; 242. a handle; 243. a ball joint; 244. A grip; 245. and (4) a groove.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully with reference to the accompanying drawings, in which several embodiments of the present invention are shown, but the present invention can be implemented in different forms, and is not limited to the embodiments described in the text, but rather, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the use of the term knowledge in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-4, an automatic folding metal stand with an extendable seat includes a metal stand 1 and a seat 2, the seat 2 is connected to a top end surface of the metal stand 1, the seat 2 includes an expansion assembly 21, a support assembly 22 and a power assembly 23, the expansion assembly 21 includes a gear 211, the gear 211 is rotatably connected to the top end surface of the metal stand 1 through a rotating shaft, two sawtooth strips 212 are symmetrically disposed on two sides of the gear 211, both the sawtooth strips 212 are engaged with the gear 211, bottom end surfaces of the two sawtooth strips 212 are abutted to the top end surface of the metal stand 1, one end of each sawtooth strip 212 is inserted with a tension roller 213, the two tension rollers 213 are symmetrically disposed with the gear 211 as a central axis, the support assembly 22 includes four support seats 221, bottom ends of each support seat 221 are abutted to the top end surface of the metal stand 1, it is a plurality of the supporting seat 221 uses gear 211 to set up as two bisymmetry of center pin, with one side two the supporting seat 221 is fixed in respectively with one side tensioning roller 213 both ends, with one side two be fixed with material loading roller 222 between the supporting seat 221, two be connected with seat cloth 224 between the material loading roller 222, seat cloth 224 both ends twine respectively two on the material loading roller 222.

Embodiment 3, referring to fig. 3, each of the feeding rollers 222 is sleeved with a coil spring 225, each of the feeding rollers 222 is connected with the seat cloth 224 through the coil spring 225, and since the feeding rollers 222 are connected with the seat cloth 224 through the coil springs 225, both ends of the seat cloth 224 are automatically wound on the two feeding rollers 222 through the energy storage of the coil springs 225.

In embodiment 3, please refer to fig. 3 again, the supporting seat 221 and the sawtooth rack 212 are rotatably connected with the rotating wheels 223 at four top corners of the bottom end surfaces thereof through the rotating shafts, so that the supporting seat 221 and the sawtooth rack 212 roll on the top end surface of the metal stand 1 through the rotating wheels 223 embedded at the bottom ends thereof, thereby preventing dry friction between the supporting seat 221 and the sawtooth rack 212 and the metal stand 1.

In an embodiment, referring to fig. 3 again, the power assembly 23 includes a worm wheel 231, the worm wheel 231 is located at the bottom end of the gear 211 and is coaxially disposed with the gear 211, a worm 232 is engaged and connected to one side of the worm wheel 231, and both ends of the worm 232 are engaged and connected to the top end surface of the metal stand 1 through a bearing seat, so that when the worm 232 rotates, the worm 232 is engaged with the worm wheel 231, so as to provide torque to the worm wheel 231 and drive the worm wheel 231 to rotate, and since the worm wheel 231 is coaxially disposed with the gear 211, the gear 211 is driven to rotate.

In an embodiment, please refer to fig. 3 and 4 again, the worm 232 is rotated by the power assembly 24, the power assembly 24 includes a telescopic rod 241, the telescopic rod 241 is fixed on the outer circumferential surface of one end of the worm 232, one end of the telescopic rod 241 far away from the worm 232 is fixed with a handle 242, since the handle 242 is connected with the worm 232 through the telescopic rod 241, when the handle 242 rotates, the handle 242 drives the worm 232 to rotate, and by the extension and contraction of the telescopic rod 241, the handle 242 can be retracted into the bottom end of the seat cloth 224 to be hidden when not in use, one side surface of the handle 242 is embedded with a ball joint 243, one end of the ball joint 243 is fixed with a handle 244, so that when the handle 244 is held by a viewer, and revolves around the telescopic rod 241 on the handle 242, the handle 244 is allowed to drive the handle 242 to rotate, and since the handle 244 is connected with the ball joint 243 embedded in the handle 242, therefore, the ball joint 243 is utilized to rotate on the handle 242, so as to prevent the wrist of the audience from being turned over to drive the grip 244 to revolve, a groove 245 matched with the grip 244 is formed on the surface of one side, close to the grip 244, of the handle 242, and therefore, the grip 244 is embedded into the groove 245 formed in the handle 242, so that the occupied space of the grip 244 is reduced.

The utility model discloses a concrete operation as follows:

when a large audience uses the seat 2 on the metal stand 1, the audience firstly rotates the handle 242 through the grip 244, the handle 242 is connected with the worm 232 through the expansion link 241 to drive the worm 232 in the power assembly 23 to rotate, the worm 232 is meshed with the worm wheel 231 to drive the worm wheel 231 to rotate, the worm wheel 231 is coaxially arranged with the gear 211 through the worm wheel 231 to drive the gear 211 to rotate, when the gear 211 rotates, the gear 211 is meshed with the two sawtooth racks 212 to drive the two sawtooth racks 212 to slide on the top end surface of the metal stand 1 in the opposite directions, the tension roller 213 on the sawtooth rack 212 is connected with the feeding roller 222 through the support seat 221 in the support assembly 22 to enable the two feeding rollers 222 to displace along with the tension roller 213, and two ends of the seat cloth 224 are respectively wound on the two feeding rollers 222, the part of the seat cloth 224 wound around the feeding roller 222 at both ends is continuously pulled out until the coil spring 225 connected between the seat cloth 224 and the feeding roller 222 is tightened to the limit, at which time the seat cloth 224 is tightly attached to the tension roller 213 and straightened, thereby providing support for the audience by the tightened seat cloth 224.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, if the method and the technical solution of the present invention are adopted, the present invention can be directly applied to other occasions without substantial improvement, and the present invention is within the protection scope of the present invention.

Claims

1. An automatic folding metal stand with an extensible seat comprises a metal stand (1) and a chair (2), it is characterized in that the seat (2) is connected with the top end surface of the metal stand (1), the seat (2) comprises an expansion component (21), a support component (22) and a power component (23), the expansion component (21) comprises a gear (211), the gear (211) is rotationally connected with the top end surface of the metal stand (1) through a rotating shaft, sawtooth strips (212) are symmetrically arranged on two sides of the gear (211), the two sawtooth strips (212) are meshed with the gear (211), the bottom end surfaces of the two sawtooth strips (212) are abutted to the top end surface of the metal stand (1), one end of each sawtooth strip (212) is inserted with a tensioning roller (213), and the two tensioning rollers (213) are symmetrically arranged by taking the gear (211) as a central shaft;

supporting component (22) are including four supporting seats (221), every the bottom of supporting seat (221) all with the top surface looks butt of metal stand (1), a plurality of supporting seat (221) use gear (211) to set up as two bisymmetry of center pin, with one side two supporting seat (221) are fixed in respectively with one side tensioning roller (213) both ends, with one side two be fixed with material loading roller (222) between supporting seat (221), two be connected with seat cloth (224) between material loading roller (222), seat cloth (224) both ends twine in two respectively on material loading roller (222).

2. The automatic folding metal stand capable of being extended in seat as claimed in claim 1, wherein the power assembly (23) comprises a worm wheel (231), the worm wheel (231) is located at the bottom end of the gear (211) and is coaxially arranged with the gear (211), a worm (232) is meshed with one side of the worm wheel (231), and both ends of the worm (232) are meshed with the top end surface of the metal stand (1) through bearing seats.

3. The extendable automatic folding metal stand of claim 2, wherein the worm (232) is rotated by the force application assembly (24), the force application assembly (24) comprises a telescopic rod (241), the telescopic rod (241) is fixed on the outer circumference of one end of the worm (232), and a handle (242) is fixed on one end of the telescopic rod (241) far away from the worm (232).

4. The extendable automatic folding metal stand of claim 3, wherein a ball joint (243) is embedded in one side surface of the handle (242), and a handle (244) is fixed to one end of the ball joint (243).

5. The extendable automatic folding metal stand of claim 4, wherein a side surface of the handle (242) near the grip (244) is provided with a groove (245) matching with the grip (244).

6. The extendable automatic folding metal stand of claim 1, wherein each of said feeding rollers (222) is sleeved with a coil spring (225), and each of said feeding rollers (222) is connected to the seat cloth (224) by the coil spring (225).

7. The extendable automatic folding metal stand of claim 1, wherein the supporting base (221) and the four corners of the bottom surface of the sawtooth rack (212) are rotatably connected with rotating wheels (223) through rotating shafts.