CN208318672U - One kind can expand and telescopic computer desk - Google Patents

Abstract

The utility model provides one kind and can expand and telescopic computer desk, it include: panel assembly include contact plate, two pieces of pulling plates, two clamping plates and two connecting rods, the lower end of contact plate is wholely set protrusive board, the two sides of protrusive board are symmetrically arranged with two pieces of pulling plates, the first sliding rail is offered on the end face of pulling plate, the bottom of pulling plate is provided with clamping plate, the second sliding rail is offered on the inside of the end face of clamping plate, one end of connecting rod can be slidably fastened in the first sliding rail, the other end can be slidably fastened in the second sliding rail, the thickness of contact plate, the thickness of pulling plate and the thickness of clamping plate are equal；Four telescopic legs, two telescopic legs can be slidably arranged in the bottom of clamping plate, other two telescopic leg can be slidably arranged in the bottom of other one piece of clamping plate.Deployable, the telescopic effect of feet that such design realizes desktop.

Description

One kind can expand and telescopic computer desk

Technical field

The utility model relates to a kind of computer desks, and in particular to one kind can expand and telescopic computer desk.

Background technique

Existing desk for bed minor structure is simple, and function is very single.Some desk legs be it is fixed, some are legs Portion can only commonly stretch, and cannot be adjusted according to the height of people, the width of desk is very inflexible, and being sometimes seated can feel The need that unusual land occupation side in bed is not able to satisfy the classmate learnt in dormitory are put when feeling very crowded, and sleep It wants.

These usual desks are used for dormitory or household bed, put laptop computer and pocket-handkerchief is used.Once it does not use, it must It must accept or place elsewhere, not so, position is occupied by desk on bed, sleeping quarters very little.

A kind of adjustable height computer desk, Ci Zhong electricity are provided in Patent No. CN201020126183.9 in the prior art There is fan on brain table and table leg can realize flexible locking by bolt.The size of desktop of such computer desk is fixed, cannot It is enough to realize extension；Table leg can be realized flexible, but telescopic process is relatively cumbersome, does not have convenient and fast function.Therefore, Neng Gouti For one kind can expand and telescopic computer desk it is necessary.

Utility model content

Technical problem to be solved by the utility model is: cannot achieve to solve the desktop of computer desk in the prior art Extension, the problem that it is inconvenient that feet is stretched.The utility model provides that one kind can be expanded and telescopic computer desk is above-mentioned to solve Problem.

The technical scheme adopted by the utility model to solve the technical problem is as follows: one kind can expand and telescopic computer Table, comprising:

Panel assembly, the panel assembly include contact plate, two pieces of pulling plates, two clamping plates and two connecting rods, described to connect The lower end of touch panel has been wholely set protrusive board, and the two sides of the protrusive board are symmetrically arranged with two pieces of pulling plates, the end face of the pulling plate On offer the first sliding rail, the bottom of the pulling plate is provided with the clamping plate, and is offered on the inside of the end face of the clamping plate One end of two sliding rails, the connecting rod can be slidably fastened in first sliding rail, and the other end can be slidably fastened on In second sliding rail, the thickness of the contact plate, the thickness of the pulling plate, the thickness of the clamping plate and the protrusive board thickness Equal, when expanded, the protrusive board is fastened between two clamping plates；

Four telescopic legs, two telescopic legs can be slidably arranged in the bottom of the clamping plate, described in other two Telescopic leg can be slidably arranged in the bottom of other one piece of clamping plate, and the telescopic leg includes interior bar, middle bar and outer bar, institute Outer bar lower part is stated with the first opening, the top of the inner cavity of the outer bar has limit notch, the inside vehicle of the limit notch There is a threaded line, there is inclined first top margin of axis to the outer bar in the outer bar of first open-mouth, described the First annular straight portion is wholely set on the free end of one top margin, the inner wall in the first annular straight portion gets on the bus and has threaded line, institute The upper end for stating middle bar has the first flange routed up outward, and the outer wall of the middle bar of the lower part of first flange is got on the bus and had Threaded line, the lower end of the middle bar have inclined second top margin of axis to the middle bar, the free end of second top margin On be wholely set the second straight portion of annular, the inner wall in the straight portion of the second annular gets on the bus and has threaded line, on the outer wall of the interior bar With the second flange routed up outward, the outer wall of the interior bar of the lower part of second flange gets on the bus and has threaded line, described The outer wall of the interior bar on the top of the second flange gets on the bus and has threaded line, upon compression, the outer wall of the interior bar and the limit The inner thread of recess connects；The outer wall of the interior bar is connected with the inner thread in the straight portion of the second annular；When expanded, institute The inner wall for stating the straight portion of the second annular is connect with the outer wall thread of the interior bar, the inner wall of second top margin and second flange Inner wall fitting, the outer wall of the middle bar connect with the inner thread in the first annular straight portion, the inner wall of first top margin It is bonded with the inner wall of first flange.

Preferably, having elastic piece on the inside of the clamping plate.

Preferably, the top of the elastic piece is provided with slope.

Preferably, further include four slide track components, the slide track component includes sliding rail shell, fixed plate and slide bar, two The slide track component is fixed on the bottom of the clamping plate, other two described slide track component is fixed on other one piece of clamping plate Bottom, the end of the outer bar are fixedly connected with the bottom of the fixed plate, and the side of the sliding rail shell offers sliding-rail groove, institute The bottom thread for stating sliding rail shell is connected with lock-screw, and one end of the slide bar is fixedly connected with the side of the fixed plate, separately One end can be slidably fastened in the sliding-rail groove.

Preferably, the cavity for placing dry cell is offered on the end face of the contact plate, the end of the contact plate There is accommodating chamber, the fan is arranged in the accommodating chamber and the fan is electrically connected with the cavity, the wind on face Several blowholes are offered on the contact plate of the surface of fan.

Preferably, further including elongate member, the elongate member is fixed on the surface of the contact plate, the elongate member and institute The width direction for stating contact plate is vertical.

Preferably, further including several data-interfaces, several data are provided on the end face of the contact plate Interface, the data-interface are electrically connected with the cavity.

Preferably, further including four support legs, the support leg is hinged on the free end of the interior bar.

Preferably, the surrounding of the contact plate is rounded down, the surface of the contact plate is offered for holding cup Recess.

Preferably, being provided with concave portion on the circumferential side wall of the contact plate.

It is expanded and telescopic computer desk the utility model has the beneficial effects that such, for panel assembly: firstly, logical Being stacked for contact plate, pulling plate and clamping plate is crossed, realizes storage effect；Secondly, being fastened between pulling plate by protrusive board, cooperation connects Sliding effect of the extension bar in the first sliding rail and the second sliding rail, realizes expansion effect；Again and, the thickness of contact plate, pulling plate The thickness of thickness, the thickness of clamping plate and protrusive board is equal, guarantees the stabilization of desktop bearing of desktop when expansion and gathering Property.

For telescopic leg: by interior bar, the setting of middle bar and outer bar, the effect of secondary stretching, extension is realized, it is recessed by limiting Fixation between mouth and interior bar, realizes the effect of locking；Pass through being bonded for the first top margin and the first flange, the second top margin and second The effect of Anti-extrusion is realized in the fitting of flange, is guaranteed during stretching, extension, interior bar without departing from middle bar, middle bar without departing from Outer bar can be very good to guarantee under the action of Anti-extrusion still by the setting in first annular straight portion and the straight portion of the second annular Play the fixed effect of Peripheric locking, the stability that enhancing telescopic leg uses.

Detailed description of the invention

The present invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is that the utility model one kind can be expanded and the structural schematic diagram of the optimum embodiment of telescopic computer desk.

Fig. 2 is that the utility model one kind can be expanded and the perspective view of telescopic computer desk.

Fig. 3 is the compressive state figure of the utility model telescopic leg.

Fig. 4 is the extended state figure of the utility model telescopic leg.

Fig. 5 is the rounding state figure of the utility model panel assembly.

Fig. 6 is the extended mode figure of the utility model panel assembly.

A, panel assembly in figure, B, telescopic leg, 1, contact plate, 2, pulling plate, 3, clamping plate, 4, connecting rod, 5, protrusive board, 6, first Sliding rail, the 7, second sliding rail, 8, interior bar, the 81, second flange, 9, middle bar, the 91, first flange, the 92, second top margin, the 93, second annular Straight portion, 10, outer bar, 101, limit notch, the 102, first top margin, 103, first annular straight portion, 11, elastic piece, 12, slope, 13, Sliding rail shell, 14, fixed plate, 15, slide bar, 16, lock-screw, 17, cavity, 18, blowhole, 19, elongate member, 20, data-interface, 21, recess.

Specific embodiment

The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model Limitation.On the contrary, the embodiments of the present invention include falling into owning within the scope of the spirit and intension of attached claims Variation, modification and equivalent.

In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " axis To ", " radial direction ", the orientation or positional relationship of the instructions such as " circumferential direction " be to be based on the orientation or positional relationship shown in the drawings, be only for Convenient for the description present invention and simplify description, rather than the device or element of indication or suggestion meaning there must be specific side Position is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.

In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply relatively important Property.In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " connected " " connects Connect " it shall be understood in a broad sense, for example, it may be being fixedly connected, it may be a detachable connection, or be integrally connected；It can be machine Tool connection, is also possible to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.For this field For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.In addition, in this reality With in novel description, unless otherwise indicated, the meaning of " plurality " is two or more.

Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes It is one or more for realizing specific logical function or process the step of executable instruction code module, segment or portion Point, and the range of preferred embodiments of the present invention includes other realization, wherein can not be by shown or discussion Sequence, including according to related function by it is basic simultaneously in the way of or in the opposite order, to execute function, this should be by this The embodiment person of ordinary skill in the field of utility model is understood.

As shown in Fig. 1 ~ 6, the utility model provides specific embodiment one: one kind can expand and telescopic computer desk, It include: panel assembly A, panel assembly A includes 1, two piece of pulling plate 2 of contact plate, two clamping plates 3 and two connecting rods 4, contact plate 1 Lower end be wholely set protrusive board 5, the two sides of protrusive board 5 are symmetrically arranged with two pieces of pulling plates 2, offer first on the end face of pulling plate 2 Sliding rail 6, the bottom of pulling plate 2 are provided with clamping plate 3, and the second sliding rail 7, one end of connecting rod 4 are offered on the inside of the end face of clamping plate 3 It can slidably be fastened in the first sliding rail 6, the other end can be slidably fastened in the second sliding rail 7, the thickness of contact plate 1, The thickness of the thickness of pulling plate 2, the thickness of clamping plate 3 and protrusive board 5 is equal, and when expanded, protrusive board 5 is fastened between two clamping plates 3；Four A telescopic leg B, two telescopic leg B can be slidably arranged in the bottom of clamping plate 3, other two telescopic leg B can slidably be set It sets in the bottom of other one piece of clamping plate 3, telescopic leg B includes interior bar 8, middle bar 9 and outer bar 10, and 10 lower part of outer bar has first to open Mouthful, the top of the inner cavity of outer bar 10 has limit notch 101, and the inside vehicle of limit notch 101 has threaded line, the first open-mouth There is inclined first top margin 102 of axis to outer bar 10 in outer bar 10, the has been wholely set on the free end of the first top margin 102 The one straight portion 103 of annular, the inner wall in first annular straight portion 103 get on the bus and have threaded line, and the upper end of middle bar 9 has the routed up outward One flange 91, the outer wall of the middle bar 9 of the lower part of the first flange 91 get on the bus and have threaded line, and the lower end of middle bar 9 has the axis to middle bar 9 Inclined second top margin 92 of line has been wholely set the straight portion 93 of the second annular, the second straight portion of annular on the free end of the second top margin 92 93 inner wall, which is got on the bus, threaded line, has the second flange 81 routed up outward, the lower part of the second flange 81 on the outer wall of interior bar 8 The outer wall of interior bar 8 get on the bus and have threaded line, the outer wall of the interior bar 8 on the top of the second flange 81 gets on the bus and has threaded line, upon compression, The outer wall of interior bar 8 is connect with the inner thread of limit notch 101, the inner thread of the outer wall of interior bar 8 and the straight portion 93 of the second annular Connection；When expanded, the inner wall in the second straight portion 93 of annular is connect with the outer wall thread of interior bar 8, the inner wall of the second top margin 92 and the The inner walls of two flange 81 is bonded, and the outer wall of middle bar 9 is connect with the inner thread in first annular straight portion 103, the first top margin 102 it is interior Wall is bonded with the inner wall of the first flange 91.

It is such to expand and telescopic computer desk, for panel assembly A: firstly, passing through contact plate 1, pulling plate 2 and clamping plate 3 be stacked, realizes storage effect；Secondly, being fastened between pulling plate 2 by protrusive board 5, mating connection bar 4 is in the first sliding rail 6 And the second sliding effect in sliding rail 7, realize expansion effect；Again and, the thickness of contact plate 1, the thickness of pulling plate 2, clamping plate 3 The thickness of thickness and protrusive board 5 is equal, guarantees the stability of desktop bearing of desktop when expansion and gathering.

For telescopic leg: by interior bar 8, the setting of middle bar 9 and outer bar 10, realizing the effect of secondary stretching, extension, pass through limit Fixation between position recess 101 and interior bar 8, realizes the effect of locking；By being bonded for the first top margin 102 and the first flange 91, Second top margin 92 is bonded with the second flange 81, is realized the effect of Anti-extrusion, is guaranteed during stretching, extension, interior bar 8 will not take off From middle bar 9, middle bar 9 can be very by the setting in first annular straight portion 103 and the straight portion 93 of the second annular without departing from outer bar 10 Good guarantees still to play the fixed effect of Peripheric locking, the stability that enhancing telescopic leg uses under the action of Anti-extrusion.

The utility model provides specific embodiment two: one kind can expand and telescopic computer desk, comprising: panel assembly A, panel assembly A include that 1, two piece of pulling plate 2 of contact plate, two clamping plates 3 and two connecting rods 4, the lower end of contact plate 1 are wholely set There is protrusive board 5, the two sides of protrusive board 5 are symmetrically arranged with two pieces of pulling plates 2, the first sliding rail 6, the bottom of pulling plate 2 are offered on the end face of pulling plate 2 Portion is provided with clamping plate 3, and the second sliding rail 7 is offered on the inside of the end face of clamping plate 3, and one end of connecting rod 4, which can slidably block, to be set In the first sliding rail 6, the other end can be slidably fastened in the second sliding rail 7, the thickness of contact plate 1, the thickness of pulling plate 2, folder The thickness of plate 3 and the thickness of protrusive board 5 are equal, and when expanded, protrusive board 5 is fastened between two clamping plates 3；Four telescopic leg B, two Telescopic leg B can be slidably arranged in the bottom of clamping plate 3, other two telescopic leg B is capable of the bottom of slidably other one piece of clamping plate 3 Portion, telescopic leg B include interior bar 8, middle bar 9 and outer bar 10, and 10 lower part of outer bar has the first open, top tool of the inner cavity of outer bar 10 There is limit notch 101, the inside vehicle of limit notch 101 has threaded line, has in the outer bar 10 of the first open-mouth to outer bar 10 Inclined first top margin 102 of axis has been wholely set first annular straight portion 103 on the free end of the first top margin 102, first annular The inner wall in straight portion 103 gets on the bus and has threaded line, and the upper end of middle bar 9 has the first flange 91 routed up outward, the first flange 91 The outer wall of the middle bar 9 of lower part gets on the bus and has threaded line, and the lower end of middle bar 9 has inclined second top margin 92 of axis to middle bar 9, the The straight portion 93 of the second annular has been wholely set on the free end of two top margins 92, the inner wall in the straight portion 93 of the second annular gets on the bus and has threaded line, There is the second flange 81 routed up outward, the outer wall of the interior bar 8 of the lower part of the second flange 81 gets on the bus and has spiral shell on the outer wall of interior bar 8 Streakline, the outer wall of the interior bar 8 on the top of the second flange 81 get on the bus and have threaded line, upon compression, the outer wall and limit notch of interior bar 8 101 inner thread connection, the inner thread connection of the outer wall of interior bar 8 and the straight portion 93 of the second annular；When expanded, the second annular The inner wall in straight portion 93 is connect with the outer wall thread of interior bar 8, and the inner wall of the second top margin 92 is bonded with the inner wall of the second flange 81, middle bar 9 outer wall is connect with the inner thread in first annular straight portion 103, the inner wall patch of the inner wall of the first top margin 102 and the first flange 91 It closes.

There is elastic piece 104 on the inside of clamping plate 3.The setting of elastic piece 104 can be fastened on two clamping plates 3 in protrusive board 5 Between when, between protrusive board 5 and clamping plate 3 because elastic piece 104 effect, formed squeeze locking effect.

The top of elastic piece 104 is provided with slope 12.Presence with slope 12 can be very good under guidance protrusive board 5 Pressure, the condition pushed so as to improve protrusive board 5.

The utility model provides specific embodiment three: one kind can expand and telescopic computer desk, comprising: panel assembly A, panel assembly A include that 1, two piece of pulling plate 2 of contact plate, two clamping plates 3 and two connecting rods 4, the lower end of contact plate 1 are wholely set There is protrusive board 5, the two sides of protrusive board 5 are symmetrically arranged with two pieces of pulling plates 2, the first sliding rail 6, the bottom of pulling plate 2 are offered on the end face of pulling plate 2 Portion is provided with clamping plate 3, and the second sliding rail 7 is offered on the inside of the end face of clamping plate 3, and one end of connecting rod 4, which can slidably block, to be set In the first sliding rail 6, the other end can be slidably fastened in the second sliding rail 7, the thickness of contact plate 1, the thickness of pulling plate 2, folder The thickness of plate 3 and the thickness of protrusive board 5 are equal, and when expanded, protrusive board 5 is fastened between two clamping plates 3；Four telescopic leg B, two Telescopic leg B can be slidably arranged in the bottom of clamping plate 3, other two telescopic leg B is capable of the bottom of slidably other one piece of clamping plate 3 Portion, telescopic leg B include interior bar 8, middle bar 9 and outer bar 10, and 10 lower part of outer bar has the first open, top tool of the inner cavity of outer bar 10 There is limit notch 101, the inside vehicle of limit notch 101 has threaded line, has in the outer bar 10 of the first open-mouth to outer bar 10 Inclined first top margin 102 of axis has been wholely set first annular straight portion 103 on the free end of the first top margin 102, first annular The inner wall in straight portion 103 gets on the bus and has threaded line, and the upper end of middle bar 9 has the first flange 91 routed up outward, the first flange 91 The outer wall of the middle bar 9 of lower part gets on the bus and has threaded line, and the lower end of middle bar 9 has inclined second top margin 92 of axis to middle bar 9, the The straight portion 93 of the second annular has been wholely set on the free end of two top margins 92, the inner wall in the straight portion 93 of the second annular gets on the bus and has threaded line, There is the second flange 81 routed up outward, the outer wall of the interior bar 8 of the lower part of the second flange 81 gets on the bus and has spiral shell on the outer wall of interior bar 8 Streakline, the outer wall of the interior bar 8 on the top of the second flange 81 get on the bus and have threaded line, upon compression, the outer wall and limit notch of interior bar 8 101 inner thread connection, the inner thread connection of the outer wall of interior bar 8 and the straight portion 93 of the second annular；When expanded, the second annular The inner wall in straight portion 93 is connect with the outer wall thread of interior bar 8, and the inner wall of the second top margin 92 is bonded with the inner wall of the second flange 81, middle bar 9 outer wall is connect with the inner thread in first annular straight portion 103, the inner wall patch of the inner wall of the first top margin 102 and the first flange 91 It closes.

There is elastic piece 104 on the inside of clamping plate 3.

The top of elastic piece 104 is provided with slope 12.

Such to expand and telescopic computer desk further includes four slide track components, slide track component includes sliding rail shell 13, solid Fixed board 14 and slide bar 15, two slide track components are fixed on the bottom of clamping plate 3, other two slide track component is fixed on other one piece of folder The end of the bottom of plate 3, outer bar 10 is fixedly connected with the bottom of fixed plate 14, and the side of sliding rail shell 13 offers sliding-rail groove, sliding The bottom thread of rail shell 13 is connected with lock-screw 16, and one end of slide bar 15 is fixedly connected with the side of fixed plate 14, the other end It can slidably be fastened in sliding-rail groove.Four telescopic leg B cooperate slide bar 15, realize to two sides under the action of fixed plate 14 The effect of expansion, meanwhile, after choosing expanded position, lock-screw 16 is screwed, is fixed locked, prevents it after extension It opens.

The cavity 17 for placing dry cell is offered on the end face of contact plate 1, is had on the end face of contact plate 1 and is accommodated Chamber, fan is arranged in accommodating chamber and fan is electrically connected with cavity 17, offers on the contact plate 1 of the surface of fan several A blowhole 18.The effect of fan herein does not simultaneously have heat sinking function, only simply plays good blowing for human body Effect.

Such to expand and telescopic computer desk further includes elongate member 19, elongate member 19 is fixed on the surface of contact plate 1, Elongate member 19 is vertical with the width direction of contact plate 1.By the setting of elongate member 19, can be very good to prevent because accidentally stylus it The rolling member of class, and the case where fall it.

It is such to expand and telescopic computer desk further includes several data-interfaces 20, it is arranged on the end face of contact plate 1 There are several data-interfaces 20, data-interface 20 is electrically connected with cavity 17.Data-interface 20 is used to be connected to external data line, from And realize connection effect.

Such to expand and telescopic computer desk further includes four support legs, support leg is hinged on the free end of interior bar 8. The effect of support leg is the free end that can be very good protection interior bar 8, and even if end face out-of-flatness, because support leg is hinge It connects, it is possible to realize the effect of bearing in the support direction by adjusting support leg.

The surrounding of contact plate 1 is rounded down, and the surface of contact plate 1 offers the recess 21 for holding cup.Fillet Effect is that the contact that can be use up between measured protection people and contact plate 1 can obtain safe progress.The setting of recess 21, The position-limiting action certain for cup can be played, thus the case where preventing subtle sliding and being possible to side leakage.

Concave portion is provided on the circumferential side wall of contact plate 1.When have it is water stain turn on the surface of contact plate 1, then along Fillet slide when, because of the presence in concave portion, can by water stain part access at concave portion, thus reduce it is water stain right In the influence of bed surface.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of the term Stating may not refer to the same embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be It can be combined in any suitable manner in any one or more embodiment or examples.

It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model Member can carry out various changes and amendments in the range of without departing from this item utility model technical idea completely.This item is real It is not limited to the contents of the specification with novel technical scope, it is necessary to its technology is determined according to scope of the claims Property range.

Claims (10)

1. one kind can expand and telescopic computer desk, it is characterised in that: include:

Panel assembly (A), the panel assembly (A) include contact plate (1), two pieces of pulling plates (2), two clamping plates (3) and two companies The lower end of extension bar (4), the contact plate (1) has been wholely set protrusive board (5), and the two sides of the protrusive board (5) are provided with described in two pieces Pulling plate (2) offers the first sliding rail (6) on the end face of the pulling plate (2), and the bottom of the pulling plate (2) is provided with the clamping plate (3), it is offered the second sliding rail (7) on the inside of the end face of the clamping plate (3), one end of the connecting rod (4) can be slidably It is fastened in first sliding rail (6), the other end can be slidably fastened in second sliding rail (7), the contact plate (1) Thickness, the thickness of the pulling plate (2), the thickness of the thickness of the clamping plate (3) and the protrusive board (5) it is equal, when expanded, institute Protrusive board (5) is stated to be fastened between two clamping plates (3)；

Four telescopic legs (B), two telescopic legs (B) can be slidably arranged in the bottom of the clamping plate (3), other two The telescopic leg (B) can be slidably arranged in the bottom of the other one piece clamping plate (3), and the telescopic leg (B) includes interior bar (8), middle bar (9) and outer bar (10), outer bar (10) lower part have the first open, top tool of the inner cavity of the outer bar (10) Have limit notch (101), the inside vehicle of the limit notch (101) has threaded line, the outer bar of first open-mouth (10) there is inclined first top margin (102) of axis to the outer bar (10), on the free end of first top margin (102) on It is wholely set first annular straight portion (103), the inner wall of the first annular straight portion (103) gets on the bus and has threaded line, the middle bar (9) upper end has the first flange (91) for routing up outward, the middle bar (9) of the lower part of first flange (91) it is outer Wall, which is got on the bus, threaded line, and the lower end of the middle bar (9) has inclined second top margin (92) of axis to the middle bar (9), institute It states and has been wholely set the straight portion (93) of the second annular on the free end of the second top margin (92), the inner wall in the straight portion (93) of the second annular Getting on the bus has threaded line, has the second flange (81) routed up outward, second flange (81) on the outer wall of the interior bar (8) The outer wall of the interior bar (8) of lower part get on the bus and have threaded line, the interior bar (8) on the top of second flange (81) it is outer Wall, which is got on the bus, threaded line, and upon compression, the outer wall of the interior bar (8) is connect with the inner thread of the limit notch (101), institute The outer wall for stating interior bar (8) is connected with the inner thread in the straight portion (93) of the second annular；When expanded, the straight portion of second annular (93) inner wall is connect with the outer wall thread of the interior bar (8), the inner wall and second flange of second top margin (92) (81) inner wall fitting, the outer wall of the middle bar (9) connect with the inner thread of the first annular straight portion (103), and described the The inner wall of one top margin (102) is bonded with the inner wall of first flange (91).

2. can expand as described in claim 1 and telescopic computer desk, it is characterised in that: on the inside of the clamping plate (3) With elastic piece (104).

3. can expand as claimed in claim 2 and telescopic computer desk, it is characterised in that: the elastic piece (104) it is upper Portion is provided with slope (12).

4. can expand as claimed in claim 3 and telescopic computer desk, it is characterised in that: it further include four slide track components, The slide track component includes sliding rail shell (13), fixed plate (14) and slide bar (15), and two slide track components are fixed on the folder The bottom of plate (3), other two described slide track component are fixed on the bottom of the other one piece clamping plate (3), the outer bar (10) End be fixedly connected with the bottom of the fixed plate (14), the side of the sliding rail shell (13) offers sliding-rail groove, the cunning The bottom thread of rail shell (13) is connected with lock-screw (16), one end of the slide bar (15) and the side of the fixed plate (14) It is fixedly connected, the other end can be slidably fastened in the sliding-rail groove.

5. can expand as claimed in claim 4 and telescopic computer desk, it is characterised in that: the end face of the contact plate (1) On offer cavity (17) for placing dry cell, there is accommodating chamber, fan is arranged in institute on the end face of the contact plate (1) It states in accommodating chamber and the fan is electrically connected with the cavity (17), on the contact plate (1) of the surface of the fan Offer several blowholes (18).

6. can expand as claimed in claim 5 and telescopic computer desk, it is characterised in that: further include elongate member (19), institute State the surface that elongate member (19) is fixed on the contact plate (1), the width direction of the elongate member (19) and the contact plate (1) Vertically.

7. can expand as claimed in claim 6 and telescopic computer desk, it is characterised in that: further include several data-interfaces (20), be provided with several described data-interfaces (20) on the end face of the contact plate (1), the data-interface (20) with it is described Cavity (17) electrical connection.

8. can expand as claimed in claim 7 and telescopic computer desk, it is characterised in that: further include four support legs, institute State the free end that support leg is hinged on the interior bar (8).

9. expanding as described in claim 1~8 is any and telescopic computer desk, it is characterised in that: the contact plate (1) Surrounding be rounded down, the surface of the contact plate (1) offers the recess (21) for holding cup.

10. can expand as claimed in claim 9 and telescopic computer desk, it is characterised in that: the circumferential direction of the contact plate (1) Side wall on be provided with concave portion.