CN203818922U - Caster and desk - Google Patents

Abstract

The utility model discloses a caster and a desk employing the caster. The caster comprises an inner cap, at least one running wheel assembly, a running wheel controller, a control mechanism, a first spring and a second spring, wherein the running wheel assembly comprises a first running wheel and a brake disc which rotates or stops synchronously along with the first running wheel; the running wheel controller is located under the inner cap and can move up and down relative to the inner cap between a first height and a second height; when the running wheel controller is located at the first height, the first running wheel is under a free rotation status; when the running wheel controller is pressed down to the second height, the first running wheel is under a brake status; the control mechanism comprises a sliding positioning assembly which comprises a guide rod capable of penetrating through the inner cap and the running wheel controller to move up and down; the first spring can push the running wheel controller to descend when the guide rod moves down; the second spring enables the running wheel controller to return to the first height from the second height.

Description

A kind of castor and desk

Technical field

The utility model relates to field of furniture, particularly a kind of castor and training table.

Background technology

Castor is a kind of common product, and it is of a great variety, is conventionally connected in the bottom of furniture (for example desk or chair), for facilitating the movement of furniture.General when furniture move complete after, needs are static could be for user, therefore, it is very important that the brake action of castor just seems.

The most of castor providing in the market does not provide the function of braking, and minority provides the castor of braking function, also there are some problems in the mode of its braking, the rotation of such as castor is dumb, it is unstable to support, load-bearing is limited and structure is very complicated causes assembling inconvenient etc.

The kind of amounting to training table furniture is more and more, emerges in an endless stream, and wherein application is that hand is lifted table Folding structure comparatively widely.Its Folding structure major part is more complicated, cumbersome, comparatively costliness of cost all.

Utility model content

For defect of the prior art, the purpose of this utility model is to provide a kind of castor and has the desk of this castor.

Provide a kind of castor according to an aspect of the present utility model, it is characterized in that, comprising: inner cap; At least one castor assembly, this castor assembly comprises the first castor and the brake disc that rotates or stop of synchronizeing with this first castor that are rotatably mounted in this inner cap bottom, this brake disc has the first clip engine part; Castor control, below this inner cap and can with respect to this inner cap first height and the second height between move up and down, this castor control has the second clip engine part, at this castor control in first when height, this second clip engine part not with the first clip engine part phase clamping of brake disc, this first castor is in free rotary state; Be pressed down to the second height at this castor control, this second clip engine part can with the first clip engine part phase clamping of brake disc, make this first castor in braking mode; And control mechanism, comprising: slip positioning component, has the guide rod that can move up and down with this castor control through this inner cap; The first spring, is sheathed on this guide rod and this castor control of lower end butt, and this first spring compresses along with moving down of this guide rod, declines thereby promote this castor control; And second spring, two ends are fixed between this inner cap bottom and castor control, so that this castor control is highly back to the first height from second.

Preferably, this slip positioning component comprises: slideway fixed block, with respect to this inner cap location; Resilience fixed frame, comprising: housing, is connected in the outside of this slideway fixed block; This guide rod, this outer frame bottom extends downwards and passes this slideway fixed block certainly; Spacing fastener, this spacing fastener is installed in this resilience fixed frame pivotly.

Preferably, this slideway fixed block comprises: the 5th projection, be arranged at a side of this slideway fixed block, and the bottom of the 5th projection has second recess upwards; The first chute, around the 5th projection, this first chute is divided into the slideway of the two articles of connections in left and right by the 5th projection; The 6th projection, is arranged at the another side of this slideway fixed block, and the bottom of the 6th projection has the 3rd recess upwards; The second chute, around the 6th projection, this second chute is divided into the slideway of the two articles of connections in left and right by the 6th projection; And the 7th projection, being arranged at intervals at the 6th projection below, the top of the 7th projection is an inclined-plane.

Preferably, this spacing fastener comprises: department of assembly, is installed in this resilience fixed frame pivotly; Two elastic arms, these two ends, department of assembly are respectively to downward-extension certainly, and are positioned at the outside of this slideway fixed block; The first positive stop end and the second positive stop end, extended and mutually across a certain distance in opposite directions by the end of two elastic arms, and this first positive stop end is movably located in this first chute, and this second positive stop end is movably located in this second chute.

Preferably, this resilience fixed frame also comprises: the first opening, is opened in the top of this housing, for assembling the department of assembly of spacing fastener; Stopper section, is arranged at the first side of this first opening, and inwardly gives prominence to; Backstop platform, is arranged at the below of this first opening, corresponding with this stopper section; Guide portion, is arranged at the second side of this first opening, and tilts to this backstop platform, is convenient to this spacing fastener and enters this first opening, and then can micro-ly be assemblied in rotationally between this stopper section and backstop platform.

Preferably, the lateral surface of this slideway fixed block is all also provided with the 3rd chute, and it has tilting section and is positioned at upper vertical section of two ends up and down and lower vertical section of tilting section; This castor also comprises indication mechanism, and this indication mechanism comprises: show slide block, be assemblied in the outside of this resilience fixed frame and can move with respect to this slideway fixed frame, this demonstration slide block comprises: upper wall, and the upper surface of this upper wall is provided with the first mark and the second mark; Two side, by the both sides of this upper wall to downward-extension; Two the 8th projections, are protruded in opposite directions by the inwall of two side respectively and mutually across a certain distance, the 8th projection is movably located in the 3rd chute, and is positioned at the below of this resilience fixed frame; Upper cover, with this slideway fixed block clamping, and be assemblied in this demonstration slide block outside, and the top of this upper cover is also provided with one second opening; Wherein, in the time that castor control is positioned at the first height, the first mark is shown in this second opening part, and in the time that castor control is positioned at the second height, the second mark is shown in this second opening part.

Preferably, this brake disc has circumferential multiple tooth portion and the first recess between adjacent teeth portion; This second clip engine part is outstanding second projection downwards of this castor control, the first recess that this first clip engine part is this brake disc, and the first recess phase clamping of this second projection and this brake disc, makes this first castor in braking mode; Or a groove of the bottom surface that this second clip engine part is this castor control, the tooth portion that this first clip engine part is this brake disc, the tooth portion phase clamping of this groove and this brake disc, makes this first castor in braking mode.

Preferably, this castor comprises a pair of castor assembly, and this is symmetrically arranged in this castor control both sides to castor assembly.

Preferably, this castor control is elongated, the first end end face of this castor control is provided with the annular boss for connecting this second spring, and the second end of this castor control is provided with the 4th outwards outstanding projection, to guide this castor control to move up and down along the guiding groove of this inner cap.

Preferably, this castor assembly also comprises: axis of revolution, is fixed on the bottom of this inner cap; Rotating shaft limiting device, comprising: adapter shaft, is rotatably sheathed on this axis of revolution; This brake disc, is fixed on the periphery of this adapter shaft; Two the first projections, symmetry is based in the periphery of this adapter shaft and is connected with the lateral surface of this brake disc; Wherein, this first castor is sheathed on the periphery of this adapter shaft and is positioned at the outside of this brake disc, and this first castor comprises: the second through hole, wears for this adapter shaft; Two grooves, coordinate with two the first projections.

Preferably, this castor assembly also comprises the second castor, and this second castor is connected in this inner cap.

Preferably, this castor also comprises rotating mechanism, and this rotating mechanism comprises: enclosing cover, is arranged at the outside of this inner cap; Multiple balls, are circle-shaped and are distributed between this enclosing cover and this inner cap, so that this enclosing cover can rotate relatively with this inner cap.

Provide a kind of desk with this castor according to another aspect of the present utility model, it comprises: at least one pin assembly, and table assembly, can and selectively be positioned the first expanded position and first fold co-bit is put with respect to the rotation of this pin assembly; At least one described castor, this castor is installed on this pin assembly.

Preferably, this desk also comprises connection bracket assembly, this connection bracket assembly comprises: the second link block, be fixedly connected with this pin assembly, it comprises a S. A., this S. A. is rotatably connected with this table assembly, and this table assembly can be rotated between the first expanded position and first fold co-bit put with respect to this pin assembly.

Preferably, this second link block also comprises the first locking column and the second locking column, and the distance between this first locking column and this S. A. equals the distance between this second locking column and this S. A., and the second locking column is positioned at the top of the first locking column; This desk also comprises lockout mechanism, and this table assembly is positioned to the first expanded position and the first stowed position, and this lockout mechanism comprises: locking plate, be installed on this table assembly, and can be with respect to this table assembly rotation; Torsion spring, one end of this torsion spring connects this locking plate, and the other end connects this table assembly, and it produces torsion between this locking plate one end and table assembly; Wherein, in the time that this table assembly is positioned at the first expanded position or the first stowed position, one end of this locking plate can contrarotation under the twisting force of torsion spring, its other end catches on this first locking column or the second locking column, to locate this table assembly, in the time being rotated in the forward under the effect in external force of one end of this locking plate, its other end departs from this first locking column or the second locking column, to remove the location of described table assembly.

Preferably, the other end of this locking plate is a L-type kink, and the end of this kink is a hook groove, in order to catch on this first locking column or the second locking column.

Preferably, this second link block is also provided with the 3rd locking column, be positioned at taking this S. A. as the center of circle, taking this S. A. to the distance between this first locking column or the second locking column on the circular arc of radius, and between this first locking column or the second locking column, in the time that the 3rd locking column is caught in one end of this locking plate, by this table assembly location.

Preferably, this lockout mechanism also comprises handle, and this handle is fixed in one end of this locking plate.

Preferably, this table assembly comprises: table; And first link block, being fixed on the lower surface of this table, can be connected with the relative rotation with the S. A. of the second link block, and this locking plate can be connected with this first link block with the relative rotation by a connecting pin.

Preferably, this pin assembly comprises: cross bar, is fixedly connected with this castor; Montant, the upper end of this montant is fixedly connected with this second link block, and the lower end of this montant is fixedly connected on this cross bar.

Preferably, this desk also comprises baffle plate assembly, and this baffle plate assembly comprises: baffle plate; Second connecting rod, one end of this second connecting rod is rotatably connected with this table assembly, and its other end is fixedly connected with this baffle plate; And third connecting rod, being positioned at the below of this second connecting rod, its one end is rotatably connected with this baffle plate, and the other end is rotatably connected with this pin assembly; In the time that this table assembly is positioned at the first expanded position, this baffle plate assembly is positioned at the second expanded position; In the time that this table assembly rotates to the first stowed position, this baffle plate assembly turns to the second stowed position by this second connecting rod and third connecting rod.

Preferably, this first expanded position is level attitude, and the first stowed position is vertical position, and this second expanded position and the second stowed position are vertical position, and this second expanded position is positioned at the back upper place of this second stowed position; Wherein, in the time that this table assembly is positioned at the first stowed position, this baffle plate assembly and is positioned at the second stowed position, this table assembly is positioned at the back upper place of this baffle plate assembly.

Preferably, this desk comprises two table pin assemblies; This connection bracket assembly comprises two the second link blocks, and two these the second link blocks are fixedly connected with two table pin assemblies respectively; This table assembly comprises two the first link blocks, and two the first link blocks are individually fixed in the both sides of this table, and is rotatably connected with the S. A. of two these the second link blocks respectively; At least one side of this table assembly is provided with this lockout mechanism.

Preferably, the both sides of this table assembly are equipped with this lockout mechanism, and the lockout mechanism of both sides is connected by a first connecting rod, and the two ends of this first connecting rod are fixedly connected with two these connecting pins of the both sides that are positioned at this table assembly respectively; Wherein, this connecting pin is fixedly connected with this locking plate, in the time being positioned at the locking plate rotation of this table assembly one side, is positioned at the locking plate synchronous rotary of this table assembly opposite side, realizes the lockout mechanism synchronous operation of both sides.

Preferably, this connection bracket assembly also comprises a crossbeam, and this crossbeam is fixed between two the second link blocks.

The castor that the utility model provides and desk have ensured the harmony of appearance and modeling and the collocation of each part, and synchronism and steadiness are provided, and each parts, are framing members, are also parts for modelling element; Meanwhile, this reasonable in design, novelty, hommization, firm and durable, elegant in appearance, Applicable scope is comparatively extensive.

Brief description of the drawings

By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present utility model will become:

Fig. 1 is the three-dimensional exploded view of the castor of the utility model embodiment;

Fig. 2 is the three-dimensional combination figure of the castor of the utility model embodiment;

Fig. 3 is the upward view of the castor of the utility model embodiment;

Fig. 4 is the structural representation of the inner cap of the castor of the utility model embodiment;

Fig. 5 is the structural representation of the rotating shaft limiting device of the castor of the utility model embodiment;

Fig. 6 is the structural representation of the first castor of the castor of the utility model embodiment;

Fig. 7 is the structural representation of the second castor of the castor of the utility model embodiment;

Fig. 8 a and Fig. 8 b are the structural representation of the castor control of the castor of the utility model embodiment;

Fig. 9 a is the structural representation of control mechanism one side of the castor of utility model embodiment;

Fig. 9 b is the structural representation of the control mechanism opposite side of the castor of the utility model embodiment;

Fig. 9 c is the birds-eye view of the control mechanism of the castor of the utility model embodiment;

Figure 10 a is the structural representation of slideway fixed block one side of the castor of the utility model embodiment;

Figure 10 b is the structural representation of the slideway fixed block opposite side of the castor of the utility model embodiment;

Figure 10 c is the birds-eye view of the slideway fixed block of the castor of the utility model embodiment;

Figure 11 is the structural representation of the resilience fixed frame of the castor of the utility model embodiment;

Figure 12 is the structural representation of the spacing fastener of the castor of the utility model embodiment;

Figure 13 is the structural representation of the demonstration slide block of the castor of the utility model embodiment;

Figure 14 is demonstration slide block and the control mechanism annexation schematic diagram of the castor of the utility model embodiment;

Figure 15 is the annexation schematic diagram between demonstration slide block and control mechanism and castor control and the castor assembly of castor of the utility model embodiment;

Figure 16 is the three-dimensional exploded view of the training table of the utility model embodiment;

Figure 17 is the annexation schematic diagram of table pin assembly and the castor of the training table of the utility model embodiment;

Figure 18 is the structural representation of the second link block of the training table of the utility model embodiment;

Figure 19 a is the front view of the table assembly of the training table of the utility model embodiment;

Figure 19 b is the vertical section structure schematic diagram at the B-B place of the table assembly shown in Figure 19 a;

Figure 20 a is the annexation schematic diagram between table assembly, connection bracket assembly and the lockout mechanism of the training table of the utility model embodiment;

Figure 20 b is the vertical section structure schematic diagram at the C-C place of the table assembly shown in Figure 20 a, connection bracket assembly and lockout mechanism;

Figure 21 is the structural representation of the lockout mechanism of the training table of the utility model embodiment;

Figure 22 a is the lateral plan of the state one of the training table of the utility model embodiment;

Figure 22 b is the perspective view of the state one of the training table of the utility model embodiment; And

Figure 22 c is the perspective view of the state two of the training table of the utility model embodiment.

Detailed description of the invention

According to the design of the utility model purport, castor comprises inner cap, at least one castor assembly, castor control and control mechanism.This castor assembly comprises the first castor and the brake disc that rotates or stop of synchronizeing with this first castor that are rotatably mounted in this inner cap bottom, and this brake disc has the first clip engine part.This castor control below this inner cap and can with respect to this inner cap first height and the second height between move up and down, this castor control has the second clip engine part, at this castor control in first when height, this second clip engine part not with the first clip engine part phase clamping of brake disc, this first castor is in free rotary state; Be pressed down to the second height at this castor control, this second clip engine part can with the first clip engine part phase clamping of brake disc, make the first castor in braking mode.This control mechanism comprises: slip positioning component, has the guide rod that can move up and down with this castor control through this inner cap; The first spring, is sheathed on this guide rod and this castor control of lower end butt, and this first spring compresses along with moving down of this guide rod, declines thereby promote this castor control; And second spring, two ends are fixed between this inner cap bottom and castor control, so that this castor control is highly back to the first height from second.

Taking the castor of pleiotaxy as example, in conjunction with the accompanying drawings and embodiments technology contents of the present utility model is described further below.

Refer to Fig. 1 to Fig. 3, it shows respectively three-dimensional exploded view, three-dimensional combination figure and the upward view of the castor of the utility model embodiment.In preferred embodiment of the present utility model, castor 1 comprises: inner cap 10, castor control 11, a pair of castor assembly that is installed in symmetrically castor control 11 both sides, the rotating mechanism 16 of realizing castor universal rotational, the control mechanism 17 of braking this castor assembly and indication mechanism 18.

Please also refer to Fig. 4, it shows the block diagram of the inner cap of the castor of the utility model embodiment.Inner cap 10 is roughly rounded, and its central authorities have the first through hole 100.The bottom of inner cap 10 has: generally along diametric the first storage tank 101 of inner cap 10, for accommodating castor control 11; The second storage tank 102 that is laid in symmetrically these the first storage tank 101 both sides and is communicated with it, for accommodating a pair of castor assembly.This second storage tank 102 has first end 1021 and the second end 1022.On the spaced walls inner side between the second end 1022 and first storage tank 101 of this second storage tank 102, be also formed with the guiding groove 103 perpendicular to inner cap 10 bottom surfaces.

Castor assembly comprises and is rotatably mounted in the first castor 14 of these inner cap 10 bottoms and synchronizes the brake disc 132 rotating or stop with this first castor 14, and this brake disc has the first clip engine part (detailed description sees below).

Please also refer to Fig. 5 to Fig. 7, it shows rotating shaft limiting device, first castor of the castor of the utility model embodiment, the structural representation of the second castor.In the present embodiment, synchronize and rotate or stop with brake disc in order to realize the first castor, between brake disc and the first castor, can adopt structure connection mode as shown in Figure 5 and Figure 6.Also, each castor assembly comprises the axis of revolution 12, rotating shaft limiting device 13, the first castor 14, the second castor 15 that are fixed on inner cap 10 bottoms.

Rotating shaft limiting device 13 comprises two the first projections 133 that the adapter shaft 131 that is rotatably sheathed on axis of revolution 12, the brake disc 132, the symmetry that are fixed on adapter shaft 131 peripheries are based in adapter shaft 131 peripheries and are connected with brake disc 132 lateral surfaces.Brake disc 132 has circumferential multiple tooth portion 1320 and the first recess 1321 between adjacent teeth portion.Like this, can be conducive to stably rotational force and braking force are passed to the first castor 14.

The first castor 14 is sheathed on adapter shaft 131 peripheries and is positioned at the outside of brake disc 132.The first castor 14 has the second through hole 141 wearing for adapter shaft 131 and two grooves 142 that coordinate with two the first projections 133.

Realizing the first castor synchronizes the mode of rotating or stop and being not limited to Fig. 5 and embodiment illustrated in fig. 6 with brake disc, can also be for example: the first castor is rotatably arranged on axis of revolution that brake disc is directly integrally formed at (not shown) inside the first castor.For the castor that only has first castor, brake disc also can be positioned at the outside of the first castor.

In the present embodiment, these 1021, two the second castors 15 of first end that two of castor assembly the first castors 14 are connected in to the second storage tank 102 of inner cap 10 together with axis of revolution 12, rotating shaft limiting device 13 are connected in the second end 1022 of the second storage tank 102 of inner cap.The size of the second castor 15 is less than the first castor 14, the second castors 15 in use can play supplemental support effect.Change in example at some, castor 1 also can not arrange the second castor 15.

Please also refer to Fig. 8 a and Fig. 8 b, it shows the structural representation of the castor control of the castor of the utility model embodiment.Castor control 11 below this inner cap 10 and can with respect to this inner cap 10 first height and the second height between move up and down, this castor control 11 has one second clip engine part, at this castor control 11 in first when height, this second clip engine part not with the first clip engine part phase clamping of brake disc, this first castor 14 is in free rotary state; Be pressed down to the second height at this castor control 11, this second clip engine part can with the first clip engine part phase clamping of brake disc, make the first castor 14 in braking mode.

In the present embodiment, castor control 11 is elongated, is arranged at central authorities' (also, this is symmetrically arranged in castor control both sides to castor assembly) of a pair of castor assembly.The first end end face of castor control 11 is provided with the annular boss 111 for connecting the second spring 175, bottom surface is provided with the second projection 112 given prominence to as the second clip engine part downwards, using with the first recess 1321 phase clampings as the first clip engine part of brake disc 132, make the first castor 14 in braking mode.As a modified example, the second clip engine part of bottom surface can be also a groove, with the tooth portion phase clamping of brake disc.The middle part of castor control 11 is also provided with third through-hole 113 vertically, is also provided with two the 3rd projections 114 of the outstanding and each interval certain interval of opposite tilt in the opposing sidewalls of third through-hole 113.

The second end of castor control 11 is provided with the 4th outwards outstanding projection 115, and it moves up and down along the guiding groove 103 of inner cap for boot activity wheel control 11.

Please refer to Fig. 1.Rotating mechanism comprises: enclosing cover 161 and ball 162, the bottom of enclosing cover 161 is hollow shape, matches with inner cap 10, is arranged at the outside of inner cap 10.Enclosing cover 161 center is provided with fourth hole 1611 vertically.On the end face of enclosing cover 161 inner bottom surfaces or inner cap 10, be provided with the circuit orbit that holds ball 162, multiple balls 162 are circle-shaped and are distributed between enclosing cover 161 and inner cap 10, be positioned at the below of enclosing cover 161, the top of inner cap 10, thereby by the relative rotation between scrolling realization enclosing cover 161 and the inner cap 10 of ball 162.

Please also refer to Fig. 9 a to Fig. 9 c, it shows the keystone configuration of control mechanism.Control mechanism 17 comprises: slip positioning component (detailed description sees below), has the guide rod 1722 that can move up and down through inner cap 10 and castor control 11; The first spring 174, upper end fixed cover is located on guide rod 1722 and lower end butt castor control 11, the first springs 174 compress along with moving down of guide rod 1722, declines thereby promote castor control 11; And second spring 175 (referring to Fig. 1 and Figure 15), two ends are fixed between inner cap 10 bottoms and castor control 11, so that castor control 11 is highly back to the first height from second.

Please also refer to Figure 10 a to Figure 12.In the present embodiment, the slip positioning component of control mechanism 17 comprises: the slideway fixed block 171 of locating with respect to inner cap 10, there is the resilience fixed frame 172 of guide rod, and be installed in pivotly the spacing fastener 173 in this resilience fixed frame.

Slideway fixed block 171 is fixed on enclosing cover 161 tops.One side of slideway fixed block 171 is provided with the 5th projection 1712 and the first chute 1711 around the 5th projection 1712.The bottom of the 5th projection 1712 has second recess 1713 upwards, and the first chute 1711 is divided into the slideway 1711 ' and 1711 that left and right is communicated with ".The another side of slideway fixed block 171 is provided with the 6th projection 1715 and around the second chute 1714 of the 6th projection 1715 and be arranged at intervals at the 7th projection 1716 of the 6th projection 1715 belows.The bottom of the 6th projection 1715 has the 3rd recess 1717 upwards, and by the second chute 1714 be divided into the slideway 1714 that left and right is communicated with ' and 1714 ".The top of the 7th projection 1716 is one to extend to right slideway 1714 from left slideway 1714 ' downward-sloping " inclined-plane.The middle part of slideway fixed block 171 is also provided with the guide 1719 of up/down perforation.

Resilience fixed frame 172 comprises: be connected in the housing 1721 of slideway fixed block 171 outsides and the guide rod 1722 to downward-extension from housing 1721 bottoms.Guide rod 1722 can be through guide 1719, the fifth hole 1611 of enclosing cover 161, the first through hole 100 of inner cap 10 and the third through-hole 113 of castor control 11 of slideway fixed block 171.The size of guide rod 1722 bottoms is greater than the size in gap between two the 3rd projections 114, thereby after assembling, the bottom of guide rod 1722 is positioned at the below of two the 3rd projections 114.Guide rod 1722 outsides are fixed in the upper end that is also arranged with the first spring 174, the first springs 174 on guide rod 1722, and lower end is connected to the 3rd projection 114 of castor control 11.

The first side that the top of housing 1721 also offers the first opening 1723, the first openings 1723 for assembling spacing fastener 173 is provided with inwardly outstanding 1724, the first opening 1723 belows, stopper section and is provided with the backstop platform 1725 corresponding with this stopper section 1724.The second side of the first opening 1723 is provided with the guide portion 1726 of inclination, is convenient to spacing fastener 173 and enters this first opening 1723 and and then can micro-ly be assemblied in rotationally between this stopper section 1724 and backstop platform 1725.Like this, be both convenient to spacing fastener 173 to be assemblied in resilience fixed frame 172, and can well spacing fastener 173 be limited between stopper section 1724, backstop platform 1725, guide portion 1726 again, prevented that it from coming off.

Spacing fastener 173 comprises: the department of assembly 1731 and self-assembly portion 1731 two ends that are assemblied between this stopper section 1724 and backstop platform 1725 are formed with and extend in opposite directions and phase the first positive stop end 1734 and the second positive stop end 1733 across a certain distance to the end of elastic arm 1732, two elastic arms 1732 of downward-extension.This first positive stop end 1734 is movably located in this first chute 1711, and this second positive stop end 1733 is movably located in this second chute 1714.

Below in conjunction with Figure 15, the operating process while adopting the castor 1 of the present embodiment to carry out brake operating and brake off operation is described.It should be noted that in operating process, the height of castor assembly, inner cap 10, rotating mechanism 16 and slideway fixed block 171 remains constant.In the time that castor control 11 is positioned at the first height, the second projection 112 of castor control 11 not with the first recess 1321 phase clampings of brake disc 132, the first castor 14 is in free rotary state, now, if user will realize castor braking, need the application of force to press down resilience fixed frame 172, start brake operating.

Pressing down in the process of resilience fixed frame 172, spacing fastener 173 declines, and its first positive stop end 1734 is along slideway 1711 ' move down, and its second positive stop end 1733 is along slideway 1714 ' move down.Meanwhile, the guide rod 1722 of resilience fixed frame 172 declines, and the first spring 174 is compressed, and the first spring 174 promotes the relative inner cap 10 of castor control 11 and moves down, and the second spring 175 continues to be stretched.When the first positive stop end 1734 of spacing fastener 173 is along its bottom of slideway 1711 ' drop to, and be roughly positioned at the below of the second recess 1713 of the 5th projection 1712, simultaneously, the second positive stop end 1733 of spacing fastener 173 is during along its bottom of slideway 1714 ' drop to (can be referring to Fig. 9 a and Fig. 9 b), the second projection 112 of castor control 11 snaps in the first recess 1321 of brake disc 132 completely, the first castor 14 stops operating, thereby castor 1 is in braking mode.

Unclamp after resilience fixed frame 172, under the elastic force of the first spring 174 and the pulling force effect of the second spring 175, resilience fixed frame 172 moves on slightly.The radian of 1734 of first positive stop ends of spacing fastener 173 along the second recess 1713 slides into its top, and is connected in wherein; Correspondingly, the second positive stop end 1733 of spacing fastener 173, in company with the motion track of the first positive stop end 1734, slides into the top of the 3rd recess 1717, and is connected in wherein.Under this state, resilience fixed frame 172 and castor control 11 that the second recess 1713 and the 3rd recess 1717 limit spacing fastener 173, assemble mutually with spacing fastener 173 continue to move up.Castor control 11 is in the second height, and its second projection 112 is still connected in the first recess 1321 of brake disc 132, makes the first castor in braking mode.

When again pressing down 172 operating process that enter brake off of resilience fixed frame.In this process, first, the second positive stop end 1733 of spacing fastener 173 moves down and enters slideway 1714 along the inclined-plane at the 7th projection 1716 tops " bottom; Meanwhile, the first positive stop end 1734 of spacing fastener 173 enters slideway 1711 in company with the motion track of the second positive stop ends 1733 " bottom.And the guide rod 1722 of resilience fixed frame 172 declines slightly, the first spring 174 is compressed, promote castor control 11 and move down, until its second projection 112 snaps in the first recess 1321 of brake disc 132 again completely.

Again unclamp after resilience fixed frame 172, resilience fixed frame 172 and spacing fastener 173 rise under the elastic force effect of the first spring 174, and its first positive stop end 1734 is along slideway 1711, and " move up, its second positive stop end 1733 " moves up along slideway 1714.Meanwhile, castor control 11 rises under the effect of the second spring 175 pulling force.Until resilience fixed frame 172 is got back to the height before brake operating, the first positive stop end 1734 of spacing fastener 173 skids off slideway 1711 " return slideway 1711 ' in, its second positive stop end 1733 skids off slideway 1714 " return slideway 1714 ' in.11 of castor controls return to the first height, its second projection 112 not with the first recess 1321 phase clampings of brake disc 132, the first castor 14 is in free rotary state.

Describe in detail below for showing the indication mechanism of castor status and the relation that connects with miscellaneous part thereof.

Two sides of slideway fixed block 171 are also equipped with the 3rd chute 1718, and it has tilting section and is positioned at upper vertical section of two ends up and down and lower vertical section of tilting section.

Indication mechanism 18 comprises demonstration slide block 181 and upper cover 182.Show that slide block 181 is assemblied in the outside of this resilience fixed frame and can moves with respect to this slideway fixed frame.Show that slide block 181 comprises a upper wall 1811 and two sidewalls 1812 to downward-extension from upper wall 1811 both sides.On the inwall of two sidewalls 1812, be respectively provided with one to the 8th projecting inward projection 1813.Two the 8th projections 1813 are movably located on respectively in the 3rd chute 1718 of both sides of slideway fixed block 171, and are positioned at the below of resilience fixed frame 172.

The upper surface of upper wall 1811 shows the first mark (for example " FREE ") and the second mark (for example " LOCK ").Upper cover 182 is connected in the outside of resilience fixed frame 172, and wherein the top of upper cover 182 is also provided with one second opening 1821.

The castor of the present embodiment is carrying out before brake operating, resilience fixed frame 172 supports and shows slide block 181, make two the 8th projection 1813 be arranged in upper vertical section of the 3rd chute 1718, now, the first mark " FREE " on upper wall 1811 is shown in the second opening 1821 places of upper cover 182, to represent that the first castor 14 is in free rotary state.

When starting after brake operating, show that slide block 181 declines together with resilience fixed frame 172, meanwhile, two the 8th projection 1813 starts to move down by upper vertical section along the 3rd chute 1718.Enter after tilting section, the 8th projection 1813 starts tiltedly to move down, and occurs horizontal displacement.The second opening 1821 places demonstration of upper cover 182 starts to be changed to the second mark " LOCK " by the first mark " FREE ".In the time of the second projection 112 of castor control 11 and the first recess 1321 clamping of brake disc 132, the 8th projection 1813 enters lower vertical section, the second opening 1821 places of upper cover 182 show the second mark " LOCK ", to represent that the first castor 14 is in braking mode.

In the operating process of brake off, the contrary operation of indication mechanism 18, until indication mechanism 18 returns to the state before brake operating, does not repeat them here.And then the first mark that user can show by second opening 1821 places at upper cover 182 tops or second marker for judgment the first castor 14 are in free rotary state or braking mode.

Castor 1 of the present utility model can be applied to needs mobile object below, and for example bottom of all desks or chair, to facilitate it to move.Castor 1 of the present utility model is particularly useful for the roving training table of needs.

Figure 16 shows the three-dimensional exploded view of the training table of the utility model embodiment.As shown in figure 16, in preferred embodiment of the present utility model, this training table comprises: two table pin assemblies 4, be fixed on two connection bracket assemblies 3 on table pin assembly 4, the table assembly 2 that can rotate with respect to connection bracket assembly 3, for make table assembly 2 be positioned the first expanded position and the first stowed position lockout mechanism 5, can be with respect to table pin assembly 4 mobile baffle plate assembly 6 and castor 1 between the second expanded position and the second stowed position.

Please refer to Figure 17, table pin assembly 4 comprises a cross bar 41 and a montant 42.The upper end of montant 42 is provided with two screws 421, and the middle part of montant 42 is provided with one the 3rd link block 422, and the lower end of montant 42 is fixedly connected on the middle part of cross bar 41.

Please also refer to Figure 16, Figure 18, Figure 20 a and Figure 20 b, connection bracket assembly 3 comprises two the second link blocks 31 and a crossbeam 32.The two ends of crossbeam 32 connect respectively two the second link blocks 31, with the integral structure stability of enhancement training table.It will be appreciated by those skilled in the art that at some and change in example, connection bracket assembly 3 also can not comprise crossbeam 32.

It is corresponding that the second link block 31 is provided with two screw 421 positions on the position of 314, two the 6th through holes 314 of two the 6th through holes and the montant 42 of table pin assembly 4.And then, be connected in two screws 421 through two the 6th through holes 314 by two screws, the second link block 31 is fixedly connected on to a top for pin assembly 4.

On the medial surface of the second link block 31, be also provided with S. A. 311, one first locking columns 312 and one second locking column 313.Wherein, the distance R between the first locking column 312 and S. A. 311 equals the distance R between the second locking column 313 and S. A. 311.The second locking column 313 is positioned at the top of the first locking column 312.

Please also refer to Figure 16, Figure 18, Figure 19 a, Figure 19 b and Figure 20 b, table assembly 2 comprises table 21 and two the first link blocks 22.Two the first link blocks 22 are connected to the both sides of table 21 lower surfaces.The first link block 22 is provided with the 7th through hole 221, the eight through holes 222 and the 9th through hole 223.The 7th through hole 221 is between the 8th through hole 222 and the 9th through hole 223.S. A. 311 in the second link block 31 of connection bracket assembly 3 is hinged and connected through the 7th through hole 221 and the first link block 22 of table assembly 2, the first link block 22 can be rotated around the S. A. of the second link block 31 311, thereby table assembly 2 can be overturn between the first expanded position and the first stowed position.

Please also refer to Figure 16, Figure 20 a, Figure 20 b and Figure 21, lockout mechanism 5 comprises handle 51, locking plate 52, torsion spring 53, connecting pin 54.One end of locking plate 52 is fixedly connected with handle 51, its other end is the kink 521 of a L-type, the end of kink 521 has a hook groove 522, the size that hooks groove 522 and the first locking column 312 and the second locking column 313 adapts, and can catch on any one in the first locking column 312 or the second locking column 313.The middle part of locking plate 52 is also provided with 1 the tenth through hole 523.Connecting pin 54 passes the 8th through hole 222 of the first link block 22 that is positioned at table assembly 2 one sides, the tenth through hole 523 and the torsion spring 53 of locking plate 52, is connected with three.One end of torsion spring 53 connects locking plate 52, and the other end connects the first link block 22 (not shown)s, and it connects between one end of handle 51 and table 21 and produce torsion at locking plate 52.

When table 2, in the first expanded position, (described the first expanded position is the level attitude for showing in the present embodiment for example, as shown in Figure 20 b; But can be also the required obliquity of user) time, the hook groove 522 of locking plate 52 catches on the first locking column 312 under the twisting force of torsion spring 53, now, table assembly 2 is blocked by the first locking column 312 because of connected locking plate 52, so can not be rotated, thereby locking table assembly 2.And when user is upwards after pulling handle 51, the locking plate 52 being connected with handle 51 will be taking connecting pin 54 as centre of gration, be rotated in the forward (in Figure 20 b, being clickwise), the hook groove 522 of locking plate 52 departs from the first locking column 312, removed the locking of table assembly 2, table assembly 2 and connected lockout mechanism 5 can be together around S. A. 311 forward rotation.And when table assembly 2 rotates to the first stowed position, (described the first stowed position is for example the vertical position showing in the present embodiment, can be referring to Figure 22 c; But can be also other obliquities) time, user unclamps handle 51, one end that locking plate 52 connects handle 51 by under the twisting force due to torsion spring 54 away from table 21, simultaneously, locking plate 52 is taking connecting pin 54 as centre of gration, contrarotation (being left-hand revolution in Figure 20 b), the hook groove 522 of locking plate 52 catches on the second locking column 313, and table assembly 2 is locked in to the first stowed position.Otherwise, after table assembly 2 can being unlocked by the first stowed position and rotate equally by similar mode, be locked in the first expanded position, it will not go into details herein.Be understandable that, the angle that the line between the line between the first locking column 312 and S. A. 311 and the second locking column 313 and S. A. 311 forms is exactly table 21 turn to the first stowed position angle of rotation from the first expanded position.

Further, it will be appreciated by those skilled in the art that at one of the present utility model and change in example, in the second link block 31, can also be provided with one the 3rd locking column.Described the 3rd locking column is positioned at taking S. A. 311 as the center of circle, taking the distance R between S. A. 311 to first locking columns 312 or the second locking column 313 on the circular arc of radius, and between the first locking column 312 and the second locking column 313.In the time that the hook groove 522 of described locking plate 52 catches on described the 3rd locking column, table assembly 2 is locked.By the 3rd locking column is set, table assembly 2 can be locked in to a position in the process of overturning between the first expanded position and the first stowed position, increase the locking angle of table assembly 2, strengthen the application of training table.

Further, it will be appreciated by those skilled in the art that handle 51 can be so that therefore trip lock stator 52, changes in example at some, lockout mechanism 5 also can not possess handle 51, and these variation examples also can be achieved, and it will not go into details herein.

Further, in preference of the present utility model, the both sides of table assembly 2 are equipped with lockout mechanism 5.In this embodiment, the lockout mechanism 5 of both sides is connected by a first connecting rod 55, and more specifically, the two ends of first connecting rod 55 are fixedly connected with the connecting pin 54 of lockout mechanism 5 of the both sides that are positioned at table assembly 2 respectively.Connecting pin 54 passes one end of the rear insertion first connecting rod 55 of torsion spring 53 and is fixedly connected with it.In this embodiment, in the time being positioned at the locking plate 52 of table assembly 2 one sides and rotating, be positioned at locking plate 52 synchronous rotaries of these table assembly 2 opposite sides, make the lockout mechanism 5 of the both sides of table assembly 2 realize synchronous operation (i.e. locking simultaneously or release simultaneously) by first connecting rod 55.

Please also refer to Figure 16, Figure 22 a, Figure 22 b and Figure 22 c, baffle plate assembly 6 comprises baffle plate 61, connects two second connecting rods 62 on baffle plate 61 tops and connects two third connecting rods 63 of baffle plate 61 bottoms.Two second connecting rods 62 and two third connecting rods 63 are positioned at the both sides (both sides that are baffle plate 61 are respectively provided with a second connecting rod 62 and a third connecting rod 63) of baffle plate 61 respectively.Wherein, the 9th through hole 223 of one end of second connecting rod 62 and the first link block 22 is hinged and connected by a screw, and its other end is fixed on baffle plate 61 tops.One end of third connecting rod 63 is articulated with baffle plate 61 bottoms; The 3rd link block 422 at the middle part of the other end of third connecting rod 63 and montant 42 is hinged and connected.

Further, as shown in Figure 22 a and Figure 22 b, in the time training table in the first state, be table assembly 2 when the first expanded position (level attitude), baffle plate assembly 6 is in the second expanded position, now, baffle plate 61 is positioned at the below of table 21, and roughly perpendicular with table 21.When table assembly 2 is in the time that S. A. 311 rotates, baffle plate assembly 6 tiltedly moves down the rotation by second connecting rod 62 and third connecting rod 63 to the direction of the montant 42 near table pin assembly 4; In the time that table assembly 2 turn to the first stowed position (vertical position), baffle plate assembly 6 moves to the second stowed position, now, table 21 turn to the back upper place of baffle plate 61, between table 21 and baffle plate 61, roughly parallel, training table is in the second state, as shown in Figure 22 c.This interlock design of table 21 and baffle plate 61, not only make training table launch back shield 61 away from table pin assembly 4, when use, user's leg has enough extending spaces, and this training table table 21 and baffle plate 61 after entirety folds are all pressed close to a pin assembly 4, the minimum that takes up space.

Please also refer to Figure 16, Figure 17, Figure 22 a, Figure 22 b and Figure 22 c, castor 1 is connected in the arbitrary end in the two ends of cross bar 42.In the embodiment shown in the utility model, one end of cross bar 42 is the castor 1 that the utility model previous embodiment is installed, the upper cover of the indication mechanism of castor 1 is revealed in cross bar 42 tops, judge that castor is in braking mode or free rotary state so that user directly checks, and press when needed brake operating.The other end of cross bar 42 can be common castor, and changes in example at one, and the two ends of cross bar 42 can all arrange the castor 1 of the utility model previous embodiment, and it will not go into details herein.

More further, in conjunction with the embodiment shown in above-mentioned Figure 16 to Figure 22, those skilled in the art understand, training table of the present utility model has succinct, stable Folding structure, modern design, it is opened and the mode of amounting to two states by forward type handlebar locked and release table, uses more convenient, more humane.

More further, in conjunction with the embodiment shown in above-mentioned Fig. 1 to Figure 22, those skilled in the art understand, the specific folding mechanism that training table of the present utility model has and castor have ensured the harmony of appearance and modeling and the collocation of each part, and synchronism and steadiness are provided, and each parts, be framing member, be also a part for modelling element; Meanwhile, this reasonable in design, novelty, hommization, firm and durable, elegant in appearance, Applicable scope is comparatively extensive.

Although the utility model discloses as above with preferred embodiment, but it is not in order to limit the utility model.The utility model person of ordinary skill in the field, not departing from spirit and scope of the present utility model, when doing various changes and amendment.Therefore the scope that, protection domain of the present utility model ought define depending on claims is as the criterion.

Claims (25)

1. a castor, is characterized in that, comprising:

Inner cap;

At least one castor assembly, this castor assembly comprises the first castor and the brake disc that rotates or stop of synchronizeing with this first castor that are rotatably mounted in this inner cap bottom, this brake disc has the first clip engine part;

Castor control, below this inner cap and can with respect to this inner cap first height and the second height between move up and down, this castor control has the second clip engine part, at this castor control in first when height, this second clip engine part not with the first clip engine part phase clamping of brake disc, this first castor is in free rotary state; Be pressed down to the second height at this castor control, this second clip engine part can with the first clip engine part phase clamping of brake disc, make this first castor in braking mode; And

Control mechanism, comprising:

Slip positioning component, has the guide rod that can move up and down with this castor control through this inner cap;

The first spring, is sheathed on this guide rod and this castor control of lower end butt, and this first spring compresses along with moving down of this guide rod, declines thereby promote this castor control; And

The second spring, two ends are fixed between this inner cap bottom and castor control, so that this castor control is highly back to the first height from second.

2. castor according to claim 1, is characterized in that, this slip positioning component comprises:

Slideway fixed block, with respect to this inner cap location;

Resilience fixed frame, comprising:

Housing, is connected in the outside of this slideway fixed block;

This guide rod, this outer frame bottom extends downwards and passes this slideway fixed block certainly;

Spacing fastener, this spacing fastener is installed in this resilience fixed frame pivotly.

3. castor according to claim 2, is characterized in that, this slideway fixed block comprises:

The 5th projection, is arranged at a side of this slideway fixed block, and the bottom of the 5th projection has second recess upwards;

The first chute, around the 5th projection, this first chute is divided into the slideway of the two articles of connections in left and right by the 5th projection;

The 6th projection, is arranged at the another side of this slideway fixed block, and the bottom of the 6th projection has the 3rd recess upwards;

The second chute, around the 6th projection, this second chute is divided into the slideway of the two articles of connections in left and right by the 6th projection; And

The 7th projection, is arranged at intervals at the 6th projection below, and the top of the 7th projection is an inclined-plane.

4. castor according to claim 3, is characterized in that, this spacing fastener comprises:

Department of assembly, is installed in this resilience fixed frame pivotly;

Two elastic arms, these two ends, department of assembly are respectively to downward-extension certainly, and are positioned at the outside of this slideway fixed block;

The first positive stop end and the second positive stop end, extended and mutually across a certain distance in opposite directions by the end of two elastic arms, and this first positive stop end is movably located in this first chute, and this second positive stop end is movably located in this second chute.

5. castor according to claim 4, is characterized in that, this resilience fixed frame also comprises:

The first opening, is opened in the top of this housing, for assembling the department of assembly of spacing fastener;

Stopper section, is arranged at the first side of this first opening, and inwardly gives prominence to;

Backstop platform, is arranged at the below of this first opening, corresponding with this stopper section;

Guide portion, is arranged at the second side of this first opening, and tilts to this backstop platform, is convenient to this spacing fastener and enters this first opening, and then can micro-ly be assemblied in rotationally between this stopper section and backstop platform.

6. castor according to claim 2, is characterized in that, the lateral surface of this slideway fixed block is all also provided with the 3rd chute, and it has tilting section and is positioned at upper vertical section of two ends up and down and lower vertical section of tilting section;

This castor also comprises indication mechanism, and this indication mechanism comprises:

Show slide block, be assemblied in the outside of this resilience fixed frame and can move with respect to this slideway fixed frame, this demonstration slide block comprises:

Upper wall, the upper surface of this upper wall is provided with the first mark and the second mark;

Two side, by the both sides of this upper wall to downward-extension;

Two the 8th projections, are protruded in opposite directions by the inwall of two side respectively and mutually across a certain distance, the 8th projection is movably located in the 3rd chute, and is positioned at the below of this resilience fixed frame;

Upper cover, with this slideway fixed block clamping, and be assemblied in this demonstration slide block outside, and the top of this upper cover is also provided with one second opening; Wherein, in the time that castor control is positioned at the first height, the first mark is shown in this second opening part, and in the time that castor control is positioned at the second height, the second mark is shown in this second opening part.

7. castor according to claim 1, is characterized in that, this brake disc has circumferential multiple tooth portion and the first recess between adjacent teeth portion;

This second clip engine part is outstanding second projection downwards of this castor control, the first recess that this first clip engine part is this brake disc, and the first recess phase clamping of this second projection and this brake disc, makes this first castor in braking mode; Or a groove of the bottom surface that this second clip engine part is this castor control, the tooth portion that this first clip engine part is this brake disc, the tooth portion phase clamping of this groove and this brake disc, makes this first castor in braking mode.

8. according to the castor described in any one in claim 1 to 7, it is characterized in that, this castor comprises a pair of castor assembly, and this is symmetrically arranged in this castor control both sides to castor assembly.

9. according to the castor described in any one in claim 1 to 7, it is characterized in that, this castor control is elongated, the first end end face of this castor control is provided with the annular boss for connecting this second spring, the second end of this castor control is provided with the 4th outwards outstanding projection, to guide this castor control to move up and down along the guiding groove of this inner cap.

10. according to the castor described in any one in claim 1 to 7, it is characterized in that, this castor assembly also comprises:

Axis of revolution, is fixed on the bottom of this inner cap;

Rotating shaft limiting device, comprising:

Adapter shaft, is rotatably sheathed on this axis of revolution;

This brake disc, is fixed on the periphery of this adapter shaft;

Two the first projections, symmetry is based in the periphery of this adapter shaft and is connected with the lateral surface of this brake disc;

Wherein, this first castor is sheathed on the periphery of this adapter shaft and is positioned at the outside of this brake disc, and this first castor comprises:

The second through hole, wears for this adapter shaft;

Two grooves, coordinate with two the first projections.

11. according to the castor described in any one in claim 1 to 7, it is characterized in that, this castor assembly also comprises the second castor, and this second castor is connected in this inner cap.

12. according to the castor described in any one in claim 1 to 7, it is characterized in that, this castor also comprises rotating mechanism, and this rotating mechanism comprises:

Enclosing cover, is arranged at the outside of this inner cap;

Multiple balls, are circle-shaped and are distributed between this enclosing cover and this inner cap, so that this enclosing cover can rotate relatively with this inner cap.

13. 1 kinds of desks, is characterized in that, comprising:

At least one pin assembly,

Table assembly, can and selectively be positioned the first expanded position and first fold co-bit is put with respect to the rotation of this pin assembly;

At least one castor as described in any one in claim 1 to 12, this castor is installed on this pin assembly.

14. desks according to claim 13, is characterized in that, this desk also comprises connection bracket assembly, and this connection bracket assembly comprises:

The second link block, is fixedly connected with this pin assembly, and it comprises a S. A., and this S. A. is rotatably connected with this table assembly, and this table assembly can be rotated between the first expanded position and first fold co-bit put with respect to this pin assembly.

15. desks according to claim 14, it is characterized in that, this second link block also comprises the first locking column and the second locking column, distance between this first locking column and this S. A. equals the distance between this second locking column and this S. A., and the second locking column is positioned at the top of the first locking column;

This desk also comprises lockout mechanism, and this table assembly is positioned to the first expanded position and the first stowed position, and this lockout mechanism comprises:

Locking plate, is installed on this table assembly, and can be with respect to this table assembly rotation;

Torsion spring, one end of this torsion spring connects this locking plate, and the other end connects this table assembly, and it produces torsion between this locking plate one end and table assembly;

Wherein, in the time that this table assembly is positioned at the first expanded position or the first stowed position, one end of this locking plate can contrarotation under the twisting force of torsion spring, its other end catches on this first locking column or the second locking column, to locate this table assembly, in the time being rotated in the forward under the effect in external force of one end of this locking plate, its other end departs from this first locking column or the second locking column, to remove the location of described table assembly.

16. desks according to claim 15, is characterized in that, the other end of this locking plate is a L-type kink, and the end of this kink is a hook groove, in order to catch on this first locking column or the second locking column.

17. desks according to claim 15, it is characterized in that, this second link block is also provided with the 3rd locking column, be positioned at taking this S. A. as the center of circle, taking this S. A. to the distance between this first locking column or the second locking column on the circular arc of radius, and between this first locking column or the second locking column, in the time that the 3rd locking column is caught in one end of this locking plate, by this table assembly location.

18. desks according to claim 15, is characterized in that, this lockout mechanism also comprises handle, and this handle is fixed in one end of this locking plate.

19. according to claim 15 to the desk described in any one in 18, it is characterized in that, this table assembly comprises:

Table; And

The first link block, is fixed on the lower surface of this table, can be connected with the relative rotation, and this locking plate can be connected with this first link block with the relative rotation by a connecting pin with the S. A. of this second link block.

20. according to claim 13 to the desk described in any one in 18, it is characterized in that, this pin assembly comprises:

Cross bar, is fixedly connected with this castor;

Montant, the upper end of this montant is fixedly connected with this second link block, and the lower end of this montant is fixedly connected on this cross bar.

21. according to claim 13 to the desk described in any one in 18, it is characterized in that, this desk also comprises baffle plate assembly, and this baffle plate assembly comprises:

Baffle plate;

Second connecting rod, one end of this second connecting rod is rotatably connected with this table assembly, and its other end is fixedly connected with this baffle plate; And

Third connecting rod, is positioned at the below of this second connecting rod, and its one end is rotatably connected with this baffle plate, and the other end is rotatably connected with this pin assembly;

In the time that this table assembly is positioned at the first expanded position, this baffle plate assembly is positioned at the second expanded position; In the time that this table assembly rotates to the first stowed position, this baffle plate assembly turns to the second stowed position by this second connecting rod and third connecting rod.

22. desks according to claim 21, it is characterized in that, this first expanded position is level attitude, and the first stowed position is vertical position, this second expanded position and the second stowed position are vertical position, and this second expanded position is positioned at the back upper place of this second stowed position;

Wherein, in the time that this table assembly is positioned at the first stowed position, this baffle plate assembly and is positioned at the second stowed position, this table assembly is positioned at the back upper place of this baffle plate assembly.

23. desks according to claim 19, is characterized in that, this desk comprises two table pin assemblies; This connection bracket assembly comprises two the second link blocks, and two these the second link blocks are fixedly connected with two table pin assemblies respectively; This table assembly comprises two the first link blocks, and two the first link blocks are individually fixed in the both sides of this table, and is rotatably connected with the S. A. of two these the second link blocks respectively; At least one side of this table assembly is provided with this lockout mechanism.

24. desks according to claim 23, it is characterized in that, the both sides of this table assembly are equipped with this lockout mechanism, and the lockout mechanism of both sides is connected by a first connecting rod, and the two ends of this first connecting rod are fixedly connected with two these connecting pins of the both sides that are positioned at this table assembly respectively;

Wherein, this connecting pin is fixedly connected with this locking plate, in the time being positioned at the locking plate rotation of this table assembly one side, is positioned at the locking plate synchronous rotary of this table assembly opposite side, realizes the lockout mechanism synchronous operation of both sides.

25. desks according to claim 23, is characterized in that, this connection bracket assembly also comprises a crossbeam, and this crossbeam is fixed between two the second link blocks.