CN86107652A

CN86107652A - Folding table

Info

Publication number: CN86107652A
Application number: CN86107652.4A
Authority: CN
Inventors: 乔治·L·麦克纳马拉; 维尔吉尔·D·彼特森
Original assignee: Sico Inc
Current assignee: Sico Inc
Priority date: 1985-11-07
Filing date: 1986-11-07
Publication date: 1987-07-29
Also published as: YU188986A; SE8604728L; FR2589698A1; CH672404A5; KR870004688A; SE8604728D0; DD252312A5; IN164664B; ES2002899A6; MX168741B; JPH0339685B2; YU44600B; AU584253B2; CN1019740B; FR2589698B1; NZ218215A; AU6486686A; DE3636979A1; KR910002485B1; SU1480752A3

Abstract

Folding table has the flap that is hinged on the desktop opposed edge.Linkage comprises first hinge components and second hinge components, and first hinge components is fixed on the flap, and second hinge components and desktop are slidingly connected.First, second element is by a pin hinge, and this bearing pin is arranged on slidably on second hinge components and is installed in the slotted hole of first hinge components.A retainer is fixed on second hinge components, and the distance between it and bearing pin is greater than the first end of the slotted hole radius to the first hinged member tongue tray end, and less than the distance of slotted hole the second end to the tongue tray end.

Description

Folding table

The present invention relates to have the folding table of flap, particularly a kind of improved being used for is rotatably connected to a linkage on the desktop with flap.

In the prior art, the folding table with flap is well-known.Such desk generally is used in the hotel industry, and the flap of desk has two or three positions to place.Flap can horizontal positioned, and the concordant operating position that is in desktop also can turn to position up or down, makes desk be convenient to pass, and passes corridor and harvesting.When the flap of desk turns to upright position above the desktop, can play certain containment role to the plate vessel food that transports above the desktop.Except rotatable flap was arranged, the desktop of such desk all was contained on the bearing support usually, and can rotate between horizontal level and upright position.When desk time spent not, desktop can tilt to be placed on the bearing support, so that harvesting.In the prior art, an example of such desk is a United States Patent (USP) 4,446,769.This United States Patent (USP) is that the inferior people of grade of Weir (Wilson et al) obtained on May 8th, 1984.

Though the described folding table of verified above-mentioned United States Patent (USP) is very useful in hotel industry, find that also such desk exists some shortcomings in some cases.Flap as the described desk of above-mentioned United States Patent (USP) is connected with desktop by some linkages.These linkages comprise the fixed pivot axi and the sliding members that is fixed on the flap that are fixed on the desk.Sliding members can slide with respect to pivot, presses against together but these two elements are connected spring by one.When will be when a position concordant with desktop be removed the flap of desk, flap need be pulled away from open desktop one segment distance, simultaneously, it is turned to a position downward or upward, but no matter in the position that is still making progress downwards, when flap is pulled away from out desktop, all can expose linkage.Such desk is the normal tablecloth of shop white in use, and therefore, when flap was pulled away from out desktop, tablecloth may be filled in the linkage and be made dirty.In addition, when flap turned back to horizontal level, tablecloth also may be clamped.The related problem of another of prior art is, when the flap of desk when the position that makes progress turns to the position concordant with desktop, the thrust that must overcome spring just can be rotated, and therefore, flap is turned to the position concordant with desktop relatively require great effort.Usually, such operation all is in the guest room, restaurant, carries out in the presence of guests' face.At this moment, the aspect, restaurant wishes very all generally that when laying the table the dignity of trying one's best is tranquil, avoids guests are felt under the weather.Another problem of existing desk is, when flap turns to upper/lower positions, in fact is in the position away from desktop, and like this, transporting or receiving and keeping of desk just needs additional space.

According to a most preferred embodiment of the present invention, the consisting of of folding table a: bearing support; A desktop that is connected with bearing support; One by linkage and the pivotally connected flap of desktop, and this flap can turn to the second place that is approximately perpendicular to desktop from the primary importance concordant with desktop; Linkage comprises first hinge components and second hinge components that is connected with desktop that are fixed on the flap.First, second hinge components connects together rotationally, and second hinge components is connected with desktop slidably.

More precisely, according to embodiments of the invention, a pair of flap is pivotally connected on the opposed edge of desktop by some linkages.Linkage comprises first hinge components that is connected with plate and second hinge components that is connected with desktop slidably.Opposed slide hinge element is placed in the channel-section steel slidably on desktop, and is connected with each other by a spring.A slide hinge element and first hinge components that matches interconnect by a bearing pin, and this bearing pin is placed in the slotted hole of first hinge components.A retainer is fixed on second hinge components near the part of bearing pin and the segment distance of being separated by with it, when the first end of the slotted hole of first hinge components is near bearing pin, flap can be rotated, the second end of the slotted hole of first hinge components is near bearing pin the time, and retainer can prevent that flap from rotating.

Fig. 1 is the axonometric drawing that embodies folding table of the present invention;

Fig. 2 is the front view that embodies folding table of the present invention, and in the figure, desktop is placed on stowed position;

Fig. 3 is the front view that embodies folding table of the present invention, and in the figure, desktop is in the use location,

Fig. 4 is the side view of an end of folding table, and in the figure, desktop is on the use location, and its flap is then on the position that vertical desktop makes progress;

Fig. 5 is the shaft side figure that linkage amplifies;

Fig. 6 is the shaft side figure of a channel-section steel, and in the figure, a pawl is plugged in the channel-section steel;

Fig. 7 is the turning cylinder of a frame and the shaft side figure of locking mechanism;

Fig. 8 to 10 is vertical views, has represented that successively flap turns to the process of upright position below the desktop from upright position on desktop.

With reference to the accompanying drawings, desk 20 consists of a bearing support 22; A desktop 24, desktop 24 is rotatably mounted on the bearing support 22, will be for a more detailed description below about this point; A pair of

flap

26 and 26 ' by

linkage

30,30a, 30 ' and 30a ' be separately fixed at desktop opposed edges 28 and 28 ' on.

Bearing support 22 comprise the alternate longitudinal beam of pair of parallel 32 and 32 ', have

castor

34,34a, 34 ' and 34 ' a on it, these castors are

longitudinal beam

32 and 32 ' be supported on the common horizontal plane of horizontal plane 36 tops.Bearing support 22 also comprise a pair of

vertical column

38 and 38 '.These columns are separately fixed at

longitudinal beam

32 and 32 ' go up and from

longitudinal beam

32 and 32 ' extend upward.

Column

38 and 38 ' interconnect by horizontal gird 40.

The lower surface 240 of desktop 24 have the alternate channel-section steel of pair of parallel 42 and 42 '.This to channel-section steel respectively near desktop edge 28 and 28 ' and parallel with it.Channel-section steel 42 and 42 ' between distance greater than

column

38 and 38 ' between distance.Shown in Figure 4 and 5, channel-section steel 42 and 42 ' the same, therefore, to channel-section steel 42(shown in Fig. 4 and 6) description be applicable to fully channel-section steel 42 '.Channel-section steel 42 is an extrusion, its structure is: U type slot part 44, a vertical dividing plate 46 link to each other flute profile part 44 with the flange 48 of a level, this flange 48 can such as using several screws, be fixed on the 24a of bottom surface by any suitable mode.Channel-section steel 42 and 42 ' be fixed on the 24a of bottom surface in the mode of flute profile part 44 and 44 ' put toward each other.

See Fig. 1,2 and 5; Bar 52 be fixed to

column

38 and 38 ' the top, the size of this bar 52 make its free end 54 and 54 ' can extend to

column

38 and 38 ' outside, enter respectively

flute profile part

44 and 44 '.Free end 54 and 54 ' all have respectively

plastic slide block

56 and 56 '.The size of these two plastic slide blocks can make they slip into respectively

flute profile part

44 and 44 '.A pair of supporting arm 58 become with 58 ' respectively an end 60 and 60 ' locate to be pivotally connected to channel-section steel 42 and 42 ' on, the other end 62 and 62 ' locate to be pivotally connected to

column

38 and 38 ' on.

As shown in Figure 5 and Figure 6, a locking member 64 is fixed on the channel-section steel 42, and this locking member has a lock face 66.This lock face generally leans against on the outer surface of channel-section steel 42, and a sweep 66a who outwards protrudes links to each other lock face 66 with handle portion 68.This handle portion leaves outer surface one segment distance of channel-section steel.Locking member 64 is pivotally connected on the channel-section steel 32 by a bolt 67 that passes channel-section steel 42.Between channel-section steel 42 and nut 65, a spring 69 is enclosed within on the bolt 67.With flute profile part 44 that lock face 66 leans on mutually on excavate a part so that a through hole 70 that passes flute profile part 44 is provided on flute profile part 44.Being arranged so that when desktop turns to as shown in Figure 5 horizontal level of through hole 70 can be exposed plastics sliding part 56 by channel-section steel 42.Have a pawl 72 on the lock face 66, the size of this pawl 72 allows it to pass hole 70 to be meshed with the lock-in edge 74 of plastics sliding part 56.When holding handle portion 66 and pushing it against channel-section steel 42, handle is rotated on bolt 67, just from skidding off with lock-in edge 74 position engaged, during engagement releasing, desktop 20 just can forward the upright position of being convenient to deposit to pawl.

Flap 26 and 26 ' link to each other with desktop by

linkage

30,30a, 30 ' and 30a '.Hinge 30,30a, 30 ' and 30a ' are the same, so the description of hinge 30 is equally applicable to other hinge.Except additional letter " a " or an apostrophe ", " with expression relevant with a hinge that refers in particular to beyond, the same section of each hinge all is that identical label is arranged.Shown in Fig. 5 and 8-10, hinge 30 or, one first hinge components 80 of the hinge 30 of Fig. 8-10 ' have, this element has an installing plate 82 on the bottom surface that is fixed to flap, a ligulate element 84 vertically stretches out from installing plate 82, and its garden shape free end 86 extends to outside the installing plate 82 at longitudinal direction.Have a slotted hole 88 on the ligulate element 84, this slotted hole 88 is vertically arranged, and is paralleled with installing plate 82.The first end 87 of slotted hole 88 is away from installing plate 82, and the centre point of this end overlaps with the garden heart point of free end 86 outlines.

One second hinge components 90 will be described below with desktop 24() bottom surface 24a be connected.Part 90 is stocks of a square-section, and the size of this bar can slip into and flute profile part 44 ' measure-alike flute profile part it.Second hinge components 90 has a bearing pin to rotate end 92, and this end has a through hole that receives bearing pin 96.This bearing pin axis generally is parallel to desktop edge 28, and perpendicular with the tongue-shaped member 84 of first hinge components 80.Bearing pin 96 passes said hole and slotted hole 88 is hinged with first hinge components 80 and second hinge components 90, and by a nuts and washers 98 fix in position.The retainer that is made of a steel shoe 100 is fixed on second hinge components 90, is in bearing pin 96 next doors and holds 92 relative sides with the pivot rotation.When second hinge components 90 as following will as described in when being fixed on the desktop, retainer forms a vertical stop surfaces 102 on second hinge components 90.This stop surfaces from the distance of bearing pin 96 only less times greater than the free-ended radius of garden shape of first hinge components 80.Bearing pin 96 to the distance of stop surfaces 102 less than radius size from the second end 89 of ligulate element 84 slotted holes 88 to plate end 86.

The alternate channel-

section steel

104 and 104 of pair of parallel ' be basically perpendicular to desktop edge 28 and 28 ' lay, and on whole length of desktop 24 bottom surfaces, extend.Linkage and flap 26 and 26 ' align, like this, the first hinge tongue spare 80 and the 80a of hinge means 30 and 30a just can be fixed on the flap 26.Similarly, linkage 30 ' and first hinge components 80 of 30a ' ' and 80a ' be fixed to flap 26 ' on.These linkages are fixed on the corresponding separately flap, and therefore second hinge components 90 and second hinged member, 90 ' conllinear are opposed.Equally, the second hinge components 90a and second hinge components 90a ' conllinear are opposed.

Channel-section steel 104 and 104 ' structurally the same with channel-section steel 42, and each channel-section steel have respectively a

flute profile part

106 and 106 '.

Second hinge components

90,90a, 90 ' and the size of 90a ' make its can be slidably mounted on channel-section steel 104 and 104 ' in.Therefore, second hinge components 90 and 90 ' be placed on the respectively slidably both ends of the flute profile part 106 of channel-section steel 104.Equally, the

second hinge components

90a and 90a ' also by be placed on respectively slidably channel-section steel 104 ' flute profile part 106 ' both ends.

Second hinge components

90,90a, 90 ' and 90a ' have pin 108,108a, 108 ' and 108a ' respectively.Spring 110 and 110 ' with pin 108 and 108 ', 108a and 108a ' couple together respectively, and second hinge components that they are connected has trend close to each other.

As shown in Figure 9, to leave the distance of folding desk board bottom surface the same for the slotted hole 88 of the distance of flute profile part 106 and 106 ' leave desktop bottom surface and first hinge components 80.Therefore, when folding desk board when horizontal level aligns with desktop, the just alignment and being close together mutually of the opposed edge of desktop and flap.It should be noted that from figure the opposed edge of desktop and flap is the garden arc at the upper surface of desktop and flap, and slope inwardly.

Preferably see Fig. 2, a pair of flap bracing or strutting arrangement 112 and 112 ' respectively is on

flap

26,26 ' be supported on and desktop 24 positions aligning.This doubling plate supporting device is the same.So, for the description of flap supporting arrangement 112 be applicable to fully flap support 112 '.

Flap bracing or strutting arrangement 112 comprises a channel-section steel element 114, this channel-section steel element extrusion the same that be a cross section with channel-section steel 42, and the installation site of channel-section steel 114 makes its channel-shaped portion branch substantially vertically extend with respect to flap 26 and desktop 24 opposed edges.Flap bracing or strutting arrangement 112 has a support bar 118, the size of this support bar makes it can slip into channel-section steel 114, and pass through hole 120 on the channel-section steel 42, the free end of support bar 118 has a handle 122, and this handle curves inwardly with 90 ° of angles (or other suitable angle) free end from support bar.Support bar 118 can slide between the primary importance in the channel-section steel 114 and the second place.When support bar 118 during in primary importance, handle 122 be positioned at desktop 24 below, flap 26 can freely be rotated, when support bar 118 during in the second place, handle 122 be positioned at flap 26 below.When support bar 118 be drawn out one section support flap necessary apart from the time, determine its accurate positions of stretching out by a retainer 124, retainer 124 is fixed on the end face inboard of support bar 118.At above-mentioned extended position, handle 122 leans against on the pad 126, and this spacers is on the bottom surface of flap 26.Pad 126 is spaced a distance with surface and flap 26 that handle 122 leans on mutually, and this segment distance is supported on the position concordant with desktop flap.Pad 126 has an inclined-plane 128 towards channel-section steel 42.Flap 26 has handle 130, same flap 26 ' have handle 130 ' and, handle 130 and 130 ' the be separately fixed at outer peripheral central authorities of flap bottom surface.

Bracing frame 22 have a pair of shelf 140 and 140 ', shelf 140 and 140 ' in pillar 38 both sides is relative and put.Preferably referring to Fig. 1 and 7, shelf 140 and 140 ' the same, so to the description of shelf 140 be suitable for fully shelf 140 '.Shelf 140 has the alternate side frame of pair of parallel 142 and 144,

side frame

142 and 144 by

bearing pin

146 and 148 be rotatably fixed to

longitudinal beam

32 and 32 ' on.As shown in the figure, bearing

146 and 148 is contained in respectively in the elongated hole 150 and 152 of

side frame

142 and 144, bearing

146 and 148 with

column

38 and 38 ' between distance make that when bearing pin engages with the first end 151 and 153 of elongated hole 150 and 152

side frame

142 and 144 can be around bearing

146 and 148 rotations.When bearing

146 and 148 engaged with the second end 155 and 157 of elongated hole 150 and 152, therefore

side frame

142 and 144 and

column

38 and 38 ' draw close can prevent that frame from rotating.

Frame

142 and 144 is connected to each other by first crossbeam 149 and one second crossbeam 158.There is a bending section 160 at the middle part of second crossbeam 158, and when shelf turned to downward position, the horizontal flanges 162 of castor top can support

side frame

142 and 144.

Below by description, advantage of the present invention will be become apparent to a most preferred embodiment operating process.

When folding table in the guest room, restaurant, when being in the position of use, with

flap

26 and 26 ' expansion, and make them concordant with desktop 24, shelf 140 and 140 ' can be by turning to a position up or down like that shown in the arrow among Fig. 3, when will be when the position that makes progress turns to downward position with shelf, at first catch crossbeam 158, then it is lifted to bearing

146 and 148 positions that engage with the first end 151 and 152 of elongated hole 150 and 152, then it is turned to downward position, in this position, side frame 142 is supported on the flange 162.Should be noted that when transporting desk, shelf can remain on this downward position, because bending section 160 provides a suitable space of taking a step for the operator that the promotion desk passes the corridor.

During use, flap launches concordant with desktop, at this moment, the ligulate element 84 of first hinge components 80 generally is in the horizontal level consistent with second hinge components 90, on this position, spring 110 reinforcings are in connected hinge components 90 and bearing pin 96 below desktop 24, desktop is relative with flap and shape edge, garden that put is close together each other, the handle 122 of cramp bar 118 leans against on the pad 126, make flap concordant just with desktop, simultaneously, when desktop is horizontal, the pawl of locking member 64 is meshed with the lock-in edge 74 of plastics sliding members 56, is in the lock state.Fig. 9 has represented the linkage 30a ' when flap 26 ' when being deployed into desktop 24 flush position.

Flap position from above can turn to a position up or down.For example, will be with the downward position of flap 26 ' turn to, as shown in figure 10, the operator with a hand catch the handle 130 of flap ', with the another hand catch support bar 118 ' handle 122 ', and with below support bar 118 ' and handle 122 ' shift onto desktop 24, gravity makes then not have the flap 26 of support ' around bearing pin 96 ' and 96a ' turn to the position of approximate vertical.Because run-on point is below desktop, so flap edge at this moment desktop edge 28 ' below, flap when above-mentioned position, slide hinge element 90 ' and 90a ' slip into fully channel-section steel 104 and 104 ' in, therefore, retainer 100 ' and the end face of 100a ' and channel-section steel fit.

When flap will be rotated above the desktop approximate vertical position (as shown in Figure 8, the subvertical position of flap 26 ' be in the figure), the operator need hold flap handle 130 ', around bearing pin 96 ' and 96a ' rotation flap, when flap during near horizontal level, the edge of flap lean shape edge, garden 28 relative on the desktop with it ' on, be rotated further flap, shape edge, opposed garden just rolls toward each other, in such a way, the edge of flap and desktop is the part of linkage.When flap 26 ' when being rotated further the approximate vertical position, flap 26 ' rotate in opposed edge, simultaneously, ligulate element 84 ' and 84a ' with slide hinge element 90 ' and 90a ' from channel-section steel 104 and 104 ' pull out.Hinge components 90 ' and the sliding motion of 90a ' by spring 110 and 110 ' adjusting, when flap is in vertical position, sliding members 90 ' and 90a ' be the position of stretching out fully at them, at this moment, ligulate element 84 ' and 84a ' on slotted hole 88 ' and 88a ' be in vertical position.Fig. 5 is illustrated in the linkage that is in complete upright position on the desktop.When bearing pin 96 and 96a cooperate with the second end 89 of slotted hole 88, tongue tray and flap vertically downward, at this moment, the edge of flap 26 is lower than relative desktop edge 28, when this position, retainer 100 and 100a and ligulate element are fitted to prevent that hinge components from further rotating.For flap 26 is rotated back into horizontal level, the operator will hold flap handle 130, and whole flap 26 lifted up to tongue tray move, make first end 87 of slotted

hole

88 and 88a engage with bearing pin 96 and 96a, the interval between bearing pin 96 and 96a and retainer 100 and the 100a is enough to make the shape edge, garden of tongue tray to rotate at this moment.When the operator went back to horizontal level with flap, flap and desktop opposed edges were rotated each other with leaning, and the sliding members 90 of linkage and 90a by spring 110 and 110 ' be withdrawn into channel-section steel 104 and 104 ' in.

If desired desktop is turned to the upright position from horizontal level, the operator need hold the handle 68 of locking member 64, and to the direction driving handle 68 of channel-section steel 42.Because locking member is to connect rotatingly, so the pawl 72 of locking member is pushed and portals 70, therefore, flute profile part 44 and plastic slide block 56 can be free to slide relative to one another.

This shows that the present invention has many advantages compared with prior art. The first, flap be turned to the position concordant with desktop from the table upright position, the operator only need overcome the weight of desktop, and does not need to overcome the required additional power that is applied by spring that overcomes of prior-art devices that resembles. The structure of folding table of the present invention so that the operation that flap is launched can carry out than being easier to peace quietly, therefore, the desk of use in the noiselessness ground development chamber honorably. The second, because when flap upright position from the desktop turned to the concordant horizontal plane of the opposed edge of a desktop and flap, the opposed edge of desktop and flap provided for such rotation A rotating fulcrum so linkage can not made tablecloth dirty in such operation, simultaneously, can not make guests see ugly linkage yet. When flap turns to upper/lower positions, compacter than the flap in the prior art, like this, also facilitate desk and move in crowded, narrow corridor, restaurant, also reduced desk required space when harvesting simultaneously. The 3rd, owing to all channels can extract from the same extrusion, so desk low cost of manufacture of the present invention.

Therefore, the present invention has the advantage that prior art never had. Although the present invention is described by a most preferred embodiment,, the present invention is not limited to this, it also comprise for those skilled in the art the embodiment that is equal to of apparent those improvement. Therefore, scope of the present invention is only limited by the scope of claims.

Claims

1, folding table, it consists of:

A bearing support;

A desktop;

Be used for said desktop is connected to jockey on the said bearing support;

A flap that is used for said desktop;

Linkage, this linkage are used for said flap is turned to a second place from the primary importance concordant with said desktop.This linkage comprises one first hinge components, and this hinge components is fixed on the said flap; One second hinge components, this hinge components is connected with said desktop; Pin shaft device connects said first and second hinge components rotationally; Slide mechanism is connected said second hinge components on the said desktop slidably; Locking mechanism, this mechanism is used for said flap is locked in the second place.

2, press the folding table of claim 1, it is characterized in that, the opposed edge of said desktop and said flap is connected to each other by said hinge means, when said flap when said primary importance turns to the second place, joint each other rolls on the surface of above-mentioned phase opposed edge.

3, according to the folding table of claim 1, it is characterized in that, be used for the locking mechanism of said flap in its second place locking comprised a retainer, this retainer is fixed on said second hinge components, in a side that deviates from first element of said pin shaft device; Ligulate element on said first hinge components, this ligulate element has a slotted hole, when said bearing pin engages with first end of said slotted hole, ligulate element and the said retainer segment distance of being separated by, the ligulate element can be rotated around bearing pin, when second termination of said bearing pin and said slotted hole fashionable.Said spacing is less than making the ligulate element rotate required distance.

4, according to the folding table of claim 3, it is characterized in that, said desk has two flaps, these two flaps are placed in respectively on the opposed edge of said desktop, and it being articulated in said desktop with linkage, second hinge components of said linkage is connected with said desktop slidably; Second hinge components of first flap in one plane aligns mutually with second hinge components of second flap, this plane overlaps with the slip plane of said second hinge components and spring assembly, and this spring assembly connects together said opposed sliding members.