CN112617399B

CN112617399B - Convenient over-and-under type desk

Info

Publication number: CN112617399B
Application number: CN202011509088.1A
Authority: CN
Inventors: 刘启军
Original assignee: Hangzhou Kaige Industry Co ltd
Current assignee: Hangzhou Kaige Industry Co ltd
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-09-21
Anticipated expiration: 2040-12-18
Also published as: CN112617399A

Abstract

The invention relates to a convenient lifting type office table which comprises a lifting underframe, a table top plate, two hidden grooves, two hidden storage devices, an intermediate groove and a balance detection device. The invention can solve the problems that a file box placed on a desktop occupies a larger area, so that the space used by a person during working becomes narrow, inconvenience is brought to the person, the desk legs of the existing office desk are fixed in height, the desktop is difficult to level when the desk is faced with some rugged ground, discomfort is easily caused when the person works, and the like.

Description

Convenient over-and-under type desk

Technical Field

The invention relates to the field of office products, in particular to a convenient lifting type office table.

Background

In modern society, with the rapid development of economy, the market development of various corresponding industries is very prosperous, a plurality of corresponding office products also become daily necessities necessary for the development of various industries, and the office table is used as an office appliance necessary for people to work, but is simpler in design and structure, lacks humanized design, especially becomes a technical bottleneck of the product in comprehensive utilization, can only achieve the purpose of general work and is designed, and can not solve the problem that the office staff use the office table to become comprehensive utilization.

Modern society, people receive the restriction of work desktop size, and numerous file data are piled up on the table, in the file box is put into with numerous file is concentrated to the convenience for look up consequently, but, the file box of placing on the desktop has taken great area for the space that personnel used during operation becomes narrow and small, gives personnel and brings the inconvenience, and the table leg height of current desk is fixed, is difficult to make the desktop level in the face of some rugged and uneven ground, arouses the discomfort easily when personnel are official working.

Disclosure of Invention

Technical scheme (I)

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a convenient over-and-under type desk, includes lift chassis, desktop board, two hide grooves, two hidden storage device, middle groove and balanced detection device, the upper end of lift chassis install the desktop board, two hidden grooves have been seted up at both ends about the desktop board, hide and install hidden storage device on the groove, middle groove has been seted up at the middle part of desktop board, installs balanced detection device on the middle groove.

The lifting underframe comprises a connecting frame, a lifting cylinder, a U-shaped frame, a connecting rod, a balance base and a connecting column, the upper end of the connecting frame is installed on the desktop plate, the connecting frame is connected with the U-shaped frame through the lifting cylinder, the connecting rod is evenly installed at the lower end of the U-shaped frame, the connecting rod is connected with the connecting column in a threaded fit mode, and the balance base is arranged at the lower end of the connecting column.

Balance base include the framework, the slide bar, the power supply package, detect the lamp, the break mechanism, two copper sheets, connect the telescopic link, the gasket, copper billet and wire, the lower extreme and the framework of spliced pole are connected for the bearing, the slide bar is installed to the outer wall of framework, be sliding fit between slide bar and the connecting rod and be connected, the power supply package, detect the lamp, two copper sheets, the inside at the framework is installed in the series connection of break mechanism, the power supply package, detect the lamp, two copper sheets, connect through the wire between the break mechanism, the framework is connected with the gasket through connecting the telescopic link, it plays the effect that elasticity resets to connect the telescopic link, the copper billet is installed to the upper end of gasket, it is because copper sheet and copper billet contactless to detect the lamp and not bright, be in the space between framework and the gasket, balance base and ground at this moment between not be in the supported state.

During specific work, carry appointed position with convenient over-and-under type desk, whether the desktop board is looked over through the motion trail of observing the balancing ball and whether the detection lamp lights or not the lamp is horizontal, after the transport, the balancing ball is in quiescent condition and detects that the whole lamps of lamp are bright often, desktop board this moment is placed for the level, when the balancing ball rolls middle tank one side and when the partial detection lamp does not light, desktop board this moment does not place horizontally, adjust to the not bright balanced base of detection lamp, thereby drive the framework through rotating the spliced pole and descend, until gasket and framework lower extreme face laminating, at this moment, copper billet and two copper sheet contacts, the inside series connection route of balanced base, the detection lamp is bright, support and finish, after the desktop board horizontal adjustment, it goes up and down to suitable position to drive the desktop board through the lift cylinder.

Hidden storage device include the stopper, protection machanism, the lift cylinder, accomodate the frame, coordinated type open-close board, the closing plate, locking mechanical system, built-in spring and connection rack, the lower terminal surface at the desktop board is installed to the stopper, protection machanism is installed to the lower extreme of stopper, protection machanism plays the effect of protection to the shank, the upper end of stopper is passed through the lift cylinder and is accomodate the frame and be connected, it plays the effect of accomodating to accomodate the frame, install the connection rack on accomodating the lateral wall of frame, coordinated type open-close board is installed in the upper end outside of hiding the groove, the upper end inboard of hiding the groove is connected with the closing plate through sliding fit's mode, even there is built-in spring between closing plate and the hiding the groove, built-in spring plays the effect that elastic reset to the closing plate, install locking machanism on the closing plate.

Linkage formula open-close plate include first pivot, the gear, the linkage area, the second pivot, the connecting block, embedding piece and plate body, first pivot passes through the bearing and hides the groove and be connected, install the gear in the first pivot, the gear meshes with connecting the rack mutually, even there is the linkage area between first pivot and the second pivot, the second pivot is connected through the bearing with hiding between the groove, the connecting block is installed at both ends around the second pivot, the embedding has the embedding piece between the connecting block, the embedding piece seals the embedding to the space part between the connecting block, the aesthetic measure and the level of desktop board desktop have been guaranteed, the lateral wall of connecting block is installed on the plate body.

When the storage frame is lifted to the highest position, the plate body turns over to the original position of the sealing plate (the level of the desktop plate is guaranteed), and the sealing plate descends under the extrusion unlocking of the plate body.

Balance detection device including observation board, balance ball, buffer board, buffer spring and shelter from cloth, the observation board is installed to the upper end of middle groove, the lateral wall of middle groove passes through buffer spring and is connected with the buffer board, and the buffer board is back the type and arranges, has placed the balance ball on the middle groove, even has between the upper end of buffer board and the lateral wall of middle groove to shelter from cloth, plays the effect of protection to rolling balance ball through buffer board, buffer spring.

The gasket is characterized in that a rubber pad is laid on the lower end face of the gasket, the two copper sheets are arranged at intervals, and the frame body is made of an insulating material.

The disconnecting mechanism comprises two conductive plates and a conductive shifting piece, the conductive plates are connected with the wires and are arranged at intervals, and the conductive shifting piece is attached between the two conductive plates.

The protection mechanism comprises an arc-shaped plate, a protection pad and a built-in telescopic rod, the built-in telescopic rod is connected between the arc-shaped plate and the limiting block, and the protection pad is laid on the lower end face of the arc-shaped plate.

The locking mechanism comprises an extrusion rod, a reset spring, a locking frame and a connecting spring, a working groove is formed in the sealing plate, the upper end of the working groove is connected with the extrusion rod in a sliding fit mode, the reset spring is connected between the extrusion rod and the working groove, the lower end of the working groove is connected with the locking frame in a sliding fit mode, the connecting spring is connected between the locking frame and the working groove, and the outer end of the locking frame is embedded into the desktop plate.

The lower end inclined plane of the extrusion rod is provided with an inner groove, the inner groove is provided with a ball, the ball is attached to the upper end inclined plane of the locking frame, and the upper end inclined plane of the locking frame is of a structure which gradually inclines upwards from outside to inside.

Wherein, the observation plate is made of transparent glass material.

(II) advantageous effects

1. According to the convenient lifting type office table, the storage frame (equivalent to a file box) is connected with the table top board in a hidden lifting type mode, the storage frame is hidden and lifted when being sealed through a structural linkage design concept, the file searching and normal office work cannot be delayed, meanwhile, the horizontal state of the table top board is detected through whether the lamp is on or not and the rolling track of the balance ball to detect in time, the rugged ground is dealt with in a mode of increasing table legs (the combination among the connecting rod, the balance base and the connecting column is equivalent to the table legs), and the condition that the table top board shakes during later office work is avoided;

2. according to the convenient lifting type office table, the balance base judges whether the table top plate is supported through the balance base or not by judging whether the detection lamp is on or not, when the detection lamp is not on, the copper sheet is not in contact with the copper block, a gap is formed between the frame body and the gasket, and no supporting force exists between the frame body and the gasket, so that the balance base does not support the table top plate at the moment, and only when the frame body is in contact with the gasket, the balance base at the corresponding position can stably support the table top plate;

3. the hidden type containing device integrally adopts a structural linkage design concept, so that the operation continuity is improved, the hidden type containing device is multipurpose, the energy-saving and environment-friendly effects are achieved, the hidden groove is sealed by the plate body and the sealing plate when the containing frame is hidden, the plane integrity of the desktop plate is guaranteed while the containing frame is hidden, when the containing frame extends upwards, the plate body is turned to the position of the original sealing plate, the sealing plate is extruded to descend, the plane integrity of the desktop plate is still guaranteed, and the attractiveness is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an overall cross-sectional view of the present invention;

FIG. 3 is a schematic structural diagram of the second rotating shaft, the connecting block and the embedding block according to the present invention;

FIG. 4 is an enlarged view of a portion of the invention at X of FIG. 2;

FIG. 5 is an enlarged view of a portion of the invention at Y of FIG. 2;

fig. 6 is an enlarged view of the invention at Z of fig. 2.

Detailed Description

Embodiments of the present invention will be described below with reference to the drawings. In this process, the width of the lines or the size of the components in the drawings may be exaggerated for clarity and convenience of description.

The following terms are defined based on the functions of the present invention, and may be different depending on the intention of the user or the operator or the convention. Therefore, these terms are defined based on the entire contents of the present specification.

As shown in fig. 1 to 6, the convenient lifting type office table comprises a lifting underframe 1, a table top plate 2, two hidden grooves 3, two hidden storage devices 4, an intermediate groove 5 and a balance detection device 6, wherein the table top plate 2 is installed at the upper end of the lifting underframe 1, the two hidden grooves 3 are formed at the left end and the right end of the table top plate 2, the hidden storage devices 4 are installed on the hidden grooves 3, the intermediate groove 5 is formed in the middle of the table top plate 2, and the balance detection device 6 is installed on the intermediate groove 5.

Lifting chassis 1 include link 11, lift cylinder 12, U type frame 13, connecting rod 14, balanced base 15 and spliced pole 16, install on desktop board 2 the upper end of link 11, link 11 is connected with U type frame 13 through lift cylinder 12, connecting rod 14 is evenly installed to the lower extreme of U type frame 13, is connected with spliced pole 16 through screw-thread fit's mode on connecting rod 14, the lower extreme of spliced pole 16 is equipped with balanced base 15.

The balance base 15 comprises a frame 151, a sliding rod 152, a power supply pack 153, a detection lamp 154, a disconnecting mechanism 155, two copper sheets 156, a connecting telescopic rod 157, a gasket 158, a copper block 159 and a lead 160, the lower end of a connecting column 16 is connected with the frame 151 through a bearing, the sliding rod 152 is installed on the outer wall of the frame 151, the sliding rod 152 is connected with a connecting rod 14 in a sliding fit manner, the power supply pack 153, the detection lamp 154, the two copper sheets 156 and the disconnecting mechanism 155 are installed inside the frame 151 in series, the power supply pack 153, the detection lamp 154, the two copper sheets 156 and the disconnecting mechanism 155 are connected through the lead 160, the frame 151 is connected with the gasket 158 through the connecting telescopic rod 157, the connecting telescopic rod 157 plays a role of elastic reset, the copper block 159 is installed at the upper end of the gasket 158, the detection lamp 154 is not bright because the copper sheets 156 are not in contact with the copper block 159, a gap is formed between the frame 151 and the gasket 158, and the balance base 15 and the ground are not in a supporting state at the moment, the lower end surface of the gasket 158 is paved with a rubber pad, the two copper sheets 156 are arranged in a spaced manner, the frame body 151 is made of an insulating material, the interference of the frame body 151 on the transmission of electric power inside the balance base 15 is avoided, during specific work, the convenient lifting type office table is conveyed to a specified position, whether the table top plate 2 is horizontal or not is checked by observing the motion track of the balance ball 62 and whether the detection lamp 154 is on or not, after the table top plate 2 is conveyed, when the balance ball 62 is in a static state and the detection lamp 154 is fully on, the table top plate 2 is horizontally arranged, when the balance ball 62 rolls to one side of the middle groove 5 and part of the detection lamp 154 is not on, the table top plate 2 is not horizontally arranged, the balance base 15 with the detection lamp 154 not on is adjusted, the connecting column 16 is rotated to drive the frame body 151 to descend until the gasket 158 is attached to the lower end surface of the frame body 151, and at this time, the copper sheets 159 are in contact with the two copper sheets 156, the balance base 15 is internally connected in series, the detection lamp 154 is on, the supporting is finished, and after the desktop plate 2 is horizontally adjusted, the lifting cylinder 12 drives the desktop plate 2 to lift to a proper position.

The disconnecting mechanism 155 comprises two conductive plates 1551 and conductive pull tabs 1552, the conductive plates 1551 are connected with the lead 160, the two conductive plates 1551 are arranged in a separated mode, the conductive pull tabs 1552 are attached to the two conductive plates 1551, in the specific working process, after the height of the table top plate 2 is adjusted, the table top plate 2 is adjusted completely, whether the table top is horizontal or not is judged without lighting the detection lamp 154, the conductive pull tabs 1552 are pulled out outwards in order to save the power supply pack 153 electric power, the inside of the balance base 15 is broken, and the detection lamp 154 is turned off.

The hidden type storage device 4 comprises a limit block 41, a protection mechanism 42, a lifting cylinder 43, a storage frame 44, a linkage type opening plate 45, a sealing plate 46, a locking mechanism 47, a built-in spring 48 and a connecting rack 49, limiting block 41 is installed at the lower terminal surface of desktop board 2, protection machanism 42 is installed to the lower extreme of limiting block 41, protection machanism 42 plays the effect of protection to the shank, limiting block 41's upper end is passed through lift cylinder 43 and is connected with accepting frame 44, it plays the effect of accomodating to accept frame 44, install connection rack 49 on accepting frame 44's the lateral wall, hidden groove 3's the upper end outside installs coordinated type open-close plate 45, hidden groove 3's the upper end inboard is connected with closing plate 46 through sliding fit's mode, even there is built-in spring 48 between closing plate 46 and the hidden groove 3, built-in spring 48 plays the effect that elastic reset to closing plate 46, install locking mechanical system 47 on the closing plate 46.

The linkage type opening and closing plate 45 comprises a first rotating shaft 451, a gear 452, a linkage belt 453, a second rotating shaft 454, a connecting block 455, an embedded block 456 and a plate body 457, wherein the first rotating shaft 451 is connected with the hidden groove 3 through a bearing, the gear 452 is installed on the first rotating shaft 451, the gear 452 is meshed with the connecting rack 49, the linkage belt 453 is connected between the first rotating shaft 451 and the second rotating shaft 454, the second rotating shaft 454 is connected with the hidden groove 3 through a bearing, the connecting blocks 455 are installed at the front end and the rear end of the second rotating shaft 454, the embedded block 456 is embedded between the connecting blocks 455, the embedded block 456 hermetically embeds the gap between the connecting blocks 455 to ensure the aesthetic degree and the levelness of the tabletop surface of the tabletop plate 2, the side walls of the connecting blocks 455 are installed on the plate body 457, during specific work, when articles in the accommodating frame 44 need to be taken out, the accommodating frame 44 is driven to rise through the lifting cylinder 43, and the connecting rack 49, the hidden block is connected with the hidden groove 3, Under the cooperation of gear 452 and the effect of linkage area 453 drive second pivot 454 and rotate to drive plate body 457 and turn out, when accomodating frame 44 and rising to the highest point, plate body 457 stirs the original position of closing plate 46 (guaranteed the level of desktop board 2 desktop), and closing plate 46 descends under the extrusion unblock of plate body 457.

Protection machanism 42 include arc 421, protection pad 422 and built-in telescopic link 423, even have built-in telescopic link 423 between arc 421 and the stopper 41, protection pad 422 has been laid to the lower terminal surface of arc 421, built-in telescopic link 423 plays the effect of elastic buffer protection, and the design of the arc structure of arc 421 has increased the space of placing of personnel's office shank, the shank can not being collided with in the arc design simultaneously, has improved the comfort level.

The locking mechanism 47 comprises an extrusion rod 471, a return spring 472, a locking frame 473 and a connecting spring 474, a working groove is formed in the sealing plate 46, the upper end of the working groove is connected with the extrusion rod 471 in a sliding fit manner, the return spring 472 is connected between the extrusion rod 471 and the working groove, the lower end of the working groove is connected with the locking frame 473 in a sliding fit manner, the connecting spring 474 is connected between the locking frame 473 and the working groove, the outer end of the locking frame 473 is embedded in the table panel 2, the return spring 472 and the connecting spring 474 play a role in returning, an inner groove is formed in the inclined surface of the lower end of the extrusion rod 471, balls are placed in the inner groove and are attached to the inclined surface of the upper end of the locking frame 473, the difficulty of the descending extrusion rod 471 extruding the locking frame to retract is reduced due to the arrangement of the balls, and the inclined surface of the upper end of the locking frame 473 is of a structure gradually inclining upwards from outside to inside, the guiding function is achieved, during specific work, when the plate body 457 turns, in the turning process, the plate body 457 can be in contact with the extrusion rod 471 and presses the extrusion rod 471 downwards, the extrusion locking frame 473 retracts into the working groove, at the moment, the sealing plate 46 and the desktop plate 2 are unlocked, the plate body 457 continues to turn, the extrusion desktop plate 2 descends, until the plate body 457 turns to the original position of the sealing plate 46, when the storage frame 44 descends and hides, the plate body 457 resets and turns, the sealing plate 46 gradually resets through the built-in spring 48, and the sealing plate 46 and the desktop plate 2 are locked again through the locking mechanism 47.

Balanced detection device 6 including observing board 61, balanced ball 62, buffer board 63, buffer spring 64 and sheltering from cloth 65, observe board 61 is installed to the upper end of middle groove 5, the lateral wall of middle groove 5 passes through buffer spring 64 and is connected with buffer board 63, and buffer board 63 is the type of returning and arranges, placed balanced ball 62 on the middle groove 5, even there is sheltering from cloth 65 between the upper end of buffer board 63 and the lateral wall of middle groove 5, play the effect of protection to rolling balanced ball 62 through buffer board 63, buffer spring 64, observe board 61 and make by the clear glass material, make things convenient for personnel to observe the condition of balanced ball 62.

When in work:

desktop adjustment and height adjustment: carrying the convenient lifting type office table to a specified position, checking the horizontal condition of the table top plate 2 by observing the motion track of the balance ball 62 and detecting whether the lamp 154 is on or not, when the table top is not in the horizontal state, adjusting the balance base 15 which is not on, driving the frame body 151 to descend by rotating the connecting column 16, stopping descending after the gasket 158 is contacted with the ground, continuing descending the frame body 151 until the gasket 158 is attached to the lower end face of the frame body 151, at the moment, the copper block 159 is contacted with the two copper sheets 156, connecting a circuit in the balance base 15 in series, detecting whether the lamp 154 is on, finishing supporting the balance base 15 at the position, and driving the table top plate 2 to ascend and descend to a proper position through the lifting cylinder 12 after the horizontal state of the table top plate 2 is adjusted;

when the storage object is taken out: accomodate frame 44 through lift cylinder 43 drive and rise, drive second pivot 454 rotation under the cooperation of connecting rack 49, gear 452 and the effect of linkage area 453 to drive plate body 457 and turn out, when accomodating frame 44 and rising to the culmination, plate body 457 turns over the original position of closing plate 46, and closing plate 46 descends under plate body 457's extrusion unblock, accomodate frame 44 at this moment and no longer hide, the personnel can browse the article in accomodating frame 44.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a convenient over-and-under type desk, includes lift chassis (1), desktop board (2), two hide groove (3), two hidden storage device (4), middle groove (5) and balanced detection device (6), its characterized in that: the upper end of the lifting underframe (1) is provided with a table top plate (2), the left end and the right end of the table top plate (2) are provided with two hidden grooves (3), the hidden grooves (3) are provided with hidden storage devices (4), the middle part of the table top plate (2) is provided with an intermediate groove (5), and the intermediate groove (5) is provided with a balance detection device (6);

the lifting underframe (1) comprises a connecting frame (11), a lifting cylinder (12), a U-shaped frame (13), a connecting rod (14), a balance base (15) and a connecting column (16), wherein the upper end of the connecting frame (11) is installed on the table top plate (2), the connecting frame (11) is connected with the U-shaped frame (13) through the lifting cylinder (12), the connecting rod (14) is uniformly installed at the lower end of the U-shaped frame (13), the connecting rod (14) is connected with the connecting column (16) in a thread fit mode, and the balance base (15) is arranged at the lower end of the connecting column (16);

the balance base (15) comprises a frame body (151), a sliding rod (152), a power pack (153), a detection lamp (154), a disconnecting mechanism (155), two copper sheets (156), a connecting telescopic rod (157), a gasket (158), a copper block (159) and a lead (160), the lower end of the connecting column (16) is connected with the frame body (151) through a bearing, a sliding rod (152) is installed on the outer wall of the frame body (151), the sliding rod (152) is connected with the connecting rod (14) in a sliding fit mode, the power supply pack (153), the detection lamp (154), the two copper sheets (156) and the disconnecting mechanism (155) are installed inside the frame body (151) in series, the power supply pack (153), the detection lamp (154), the two copper sheets (156) and the disconnecting mechanism (155) are connected through a wire (160), the frame body (151) is connected with a gasket (158) through a connecting telescopic rod (157), and a copper block (159) is installed at the upper end of the gasket (158);

the hidden type storage device (4) comprises a limiting block (41), a protection mechanism (42), a lifting cylinder (43), a storage frame (44), a linkage type opening plate (45), a sealing plate (46), a locking mechanism (47), an internal spring (48) and a connecting rack (49), the table top board is characterized in that a limiting block (41) is installed on the lower end face of the table top board (2), a protection mechanism (42) is installed at the lower end of the limiting block (41), the upper end of the limiting block (41) is connected with a storage frame (44) through a lifting cylinder (43), a connecting rack (49) is installed on the side wall of the storage frame (44), a linkage type opening and closing plate (45) is installed on the outer side of the upper end of a hidden groove (3), the inner side of the upper end of the hidden groove (3) is connected with a sealing plate (46) in a sliding fit mode, a built-in spring (48) is connected between the sealing plate (46) and the hidden groove (3), and a locking mechanism (47) is installed on the sealing plate (46);

the linkage type opening and closing plate (45) comprises a first rotating shaft (451), a gear (452), a linkage belt (453), a second rotating shaft (454), a connecting block (455), an embedded block (456) and a plate body (457), wherein the first rotating shaft (451) is connected with the hidden groove (3) through a bearing, the gear (452) is installed on the first rotating shaft (451), the gear (452) is meshed with a connecting rack (49), the linkage belt (453) is connected between the first rotating shaft (451) and the second rotating shaft (454), the second rotating shaft (454) is connected with the hidden groove (3) through a bearing, the connecting blocks (455) are installed at the front end and the rear end of the second rotating shaft (454), the embedded block (456) is embedded between the connecting blocks (455), and the side wall of each connecting block (455) is installed on the plate body (457);

balance detection device (6) including observing board (61), balance ball (62), buffer board (63), buffer spring (64) and sheltering from cloth (65), observe board (61) are installed to the upper end of middle groove (5), the lateral wall of middle groove (5) passes through buffer spring (64) and is connected with buffer board (63), and buffer board (63) are back the type and arrange, balance ball (62) have been placed on middle groove (5), even there is sheltering from cloth (65) between the lateral wall of the upper end of buffer board (63) and middle groove (5).

2. A portable lift desk as recited in claim 1 wherein: the lower end face of the gasket (158) is paved with a rubber pad, the two copper sheets (156) are arranged at intervals, and the frame body (151) is made of an insulating material.

3. A portable lift desk as recited in claim 1 wherein: the disconnecting mechanism (155) comprises two conductive plates (1551) and conductive poking pieces (1552), the conductive plates (1551) are connected with the leads (160), the two conductive plates (1551) are arranged in a spaced mode, and the conductive poking pieces (1552) are attached between the two conductive plates (1551).

4. A portable lift desk as recited in claim 1 wherein: protection machanism (42) include arc (421), protection pad (422) and built-in telescopic link (423), even have built-in telescopic link (423) between arc (421) and stopper (41), protection pad (422) have been laid to the lower terminal surface of arc (421).

5. A portable lift desk as recited in claim 1 wherein: locking mechanical system (47) including extrusion stem (471), reset spring (472), locking frame (473) and coupling spring (474), the work groove has been seted up on closing plate (46), the upper end in work groove is connected with extrusion stem (471) through sliding fit's mode, even there is reset spring (472) between extrusion stem (471) and the work groove, the lower extreme in work groove is connected with locking frame (473) through sliding fit's mode, even there is coupling spring (474) between locking frame (473) and the work groove, the outer end embedding of locking frame (473) is on desktop board (2).

6. A portable lifting desk as recited in claim 5 wherein: an inner groove is formed in the inclined surface of the lower end of the extrusion rod (471), balls are placed in the inner groove, the balls are attached to the inclined surface of the upper end of the locking frame (473), and the inclined surface of the upper end of the locking frame (473) is of a structure which gradually inclines upwards from outside to inside.

7. A portable lift desk as recited in claim 1 wherein: the observation plate (61) is made of transparent glass material.