CN104397998B - Liftable desk - Google Patents
Liftable desk Download PDFInfo
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- CN104397998B CN104397998B CN201410711849.XA CN201410711849A CN104397998B CN 104397998 B CN104397998 B CN 104397998B CN 201410711849 A CN201410711849 A CN 201410711849A CN 104397998 B CN104397998 B CN 104397998B
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- rod
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B41/00—School desks or tables
- A47B41/02—Adjustable, inclinable, sliding or foldable desks tops
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Abstract
The invention discloses a liftable desk, wherein a supporting angle foot is arranged at the lower end of a desktop, and the liftable desk is characterized in that the supporting foot comprises a telescopic sleeve consisting of an inner tube and an outer tube and a one-way sliding rod arranged in the telescopic sleeve, a plastic layer is arranged on the inner wall of the outer tube, a threaded hole is formed in the side wall of the outer tube, an adjusting bolt is arranged in the threaded hole, the outer tube and the inner tube can be fixed through the adjusting bolt, two ends of the one-way sliding rod are respectively connected with the inner tube and the outer tube, a reset mechanism is arranged on the one-way sliding rod, and the one-way sliding rod can only extend in one direction before. The height of the liftable desk can be adjusted in a stepless manner, the most suitable height can be adjusted according to requirements, the safety performance of the whole desk is guaranteed while the height of the liftable desk is adjusted in a stepless manner, the desk is more convenient and safer to use, and the liftable desk has the advantages of being long in service life and the like.
Description
Technical Field
The invention relates to the field of desks, in particular to a liftable desk.
Background
Although the existing desk is also provided with a liftable desk, the height of the existing liftable desk is regulated in a step mode, and a user cannot regulate the height properly according to the requirement of the user.
Although designers can design steplessly adjustable liftable desks according to similar structures in other fields, the problems including safety, wear resistance and cost of the desks still need to be solved in the design.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects in the prior art, the invention provides the lifting desk which is simple to adjust, firm in structure, safe and long in service life.
(II) technical scheme
In order to achieve the purpose, the invention provides a lifting desk which comprises a desktop and supporting legs, wherein the supporting legs are installed at the lower end of the desktop, each supporting leg comprises a telescopic sleeve composed of an inner pipe and an outer pipe and a one-way sliding rod installed in the telescopic sleeve, each outer pipe comprises an outer metal layer and an inner plastic layer, a threaded hole is formed in the side wall of each outer pipe, an adjusting bolt is arranged in each threaded hole, the outer pipe and the inner pipe can be fixed through the adjusting bolt, two ends of each one-way sliding rod are respectively connected with the inner pipe and the outer pipe, a reset mechanism is arranged on each one-way sliding rod, and each one-way sliding rod can only extend in one way before the reset mechanism.
Furthermore, the one-way sliding rod further comprises an upper rod, a lower rod, a reset block, a swing rod and a spring;
the lower rod is provided with a sliding groove, the side surface of the sliding groove is provided with a positioning groove, and the positioning groove is provided with a plurality of ratchets which incline upwards;
the upper rod and the reset block are slidably mounted in the sliding groove in an overlapping mode;
the swing rod is rotatably arranged on the upper rod, one end of the spring is connected with the swing rod, the other end of the spring is connected with the upper rod, and the swing rod is provided with an eccentric convex rod;
the reset block is provided with a swing hole, the convex rod penetrates through the swing hole in the reset block and is arranged in the positioning groove, and the swing rod enables the convex rod to be clamped between the ratchet teeth under the action of the spring;
the upper end of the positioning groove is provided with a reset long groove, the lower end of the swing hole is provided with a reset groove, the friction coefficient between the upper rod and the reset block is smaller than that between the lower rod and the reset block, and the convex rod can move downwards to enter the reset groove after entering the reset long groove.
Further, the adjusting bolt further comprises a rotating lug, and the rotating lug is used for rotating the adjusting bolt.
Further, including the plastics podotheca, the plastics podotheca is installed the lower extreme of supporting legs.
In addition, the invention also provides a liftable tablet chair, which comprises a chair seat and supporting legs, wherein the supporting legs are arranged at the lower end of the chair seat, each supporting leg comprises a telescopic sleeve composed of an inner pipe and an outer pipe and a one-way sliding rod arranged in the telescopic sleeve, each outer pipe comprises an outer metal layer and an inner plastic layer, a threaded hole is formed in the side wall of each outer pipe, an adjusting bolt is arranged in each threaded hole, the outer pipe and the inner pipe can be fixed through the adjusting bolt, two ends of each one-way sliding rod are respectively connected with the inner pipe and the outer pipe, a reset mechanism is arranged on each one-way sliding rod, and each one-way sliding rod can only extend in one way before the reset mechanism.
Furthermore, the one-way sliding rod further comprises an upper rod, a lower rod, a reset block, a swing rod and a spring;
the lower rod is provided with a sliding groove, the side surface of the sliding groove is provided with a positioning groove, and the positioning groove is provided with a plurality of ratchets which incline upwards;
the upper rod and the reset block are slidably mounted in the sliding groove in an overlapping mode;
the swing rod is rotatably arranged on the upper rod, one end of the spring is connected with the swing rod, the other end of the spring is connected with the upper rod, and the swing rod is provided with an eccentric convex rod;
the reset block is provided with a swing hole, the convex rod penetrates through the swing hole in the reset block and is arranged in the positioning groove, and the swing rod enables the convex rod to be clamped between the ratchet teeth under the action of the spring;
the upper end of the positioning groove is provided with a reset long groove, the lower end of the swing hole is provided with a reset groove, the friction coefficient between the upper rod and the reset block is smaller than that between the lower rod and the reset block, and the convex rod can move downwards to enter the reset groove after entering the reset long groove.
(III) advantageous effects
The height of the liftable desk can be adjusted in a stepless manner, the most suitable height can be adjusted according to requirements, the safety performance of the whole desk is guaranteed while the height of the liftable desk is adjusted in a stepless manner, the use is more convenient and safer, and the liftable desk has the advantages of long service life and the like.
Drawings
FIG. 1 is a schematic view of an overall structure of a liftable desk according to embodiment 1 of the present invention;
FIG. 2 is a schematic structural view of a supporting leg portion of a liftable desk according to embodiment 1 of the present invention;
FIG. 3 is a schematic view of the structure of each part of a one-way sliding rod in the liftable desk according to embodiment 1 of the present invention;
FIG. 4 is a schematic side view of a one-way sliding rod of a liftable desk according to embodiment 1 of the present invention;
fig. 5 is a schematic view of a partial structure of a one-way sliding rod in the liftable desk according to embodiment 1 of the invention.
The table comprises a table top 1, supporting legs 2, a one-way sliding rod 3, a plastic foot sleeve 4, an inner tube 21, an outer tube 22, a plastic layer 23, a metal layer 24, a threaded hole 25, a conditional bolt 26, an upper rod 31, a lower rod 32, a reset block 33, a swing hole 331, a reset groove 332, a swing rod 34, a convex rod 341, a spring 35, a positioning groove 36, a ratchet 361, a reset long groove 362 and a sliding groove 37.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1
The integral structure of the liftable desk is shown in figure 1 and comprises a desktop 1, supporting legs 2 and plastic leg sleeves 4, wherein the supporting legs 2 are installed at the lower end of the desktop 1, and the plastic leg sleeves 4 are installed at the lower ends of the supporting legs 2.
FIG. 2 is a schematic structural view of a supporting leg part of the liftable desk of the invention; supporting legs 2 include the telescopic tube of constituteing by inner tube 21 and outer tube 22 and install one-way slide bar 3 in the telescopic tube, outer tube 22 includes the metal level 24 and the inboard plastic layer 23 in the outside, be equipped with a screw hole 25 on the lateral wall of outer tube 22, be equipped with adjusting bolt 26 in the screw hole 25, accessible between outer tube 21 and the inner tube 22 adjusting bolt 26 is fixed, one-way slide bar 3's both ends link to each other with inner tube 21 and outer tube 22 respectively.
In the present invention, the height of the supporting foot 2 can be steplessly adjusted by telescopic fixing of the outer tube 22 and the inner tube 21. The outer pipe is provided with the plastic layer 23 on the inner layer of the metal layer 24, so that the inner pipe 21 and the outer pipe 22 can be tightly attached under the action of the adjusting bolt 26 and a sufficient friction force is generated, and the function of fixing the inner pipe 21 and the outer pipe 22 is achieved.
The one-way sliding rod 3 is arranged in the telescopic sleeve, so that the telescopic sleeve can play the roles of safety and safety protection. Thus, when in use, even if the inner pipe 21 and the outer pipe 22 slide due to insufficient pretightening force of the adjusting bolt 26, the inner pipe 21 and the outer pipe 22 cannot generate large displacement due to the one-way sliding rod 3. Thereby avoiding the potential safety hazards of sudden falling of the table top or the chair seat and the like.
Generally, a reset mechanism is arranged on the one-way sliding rod 3, and the one-way sliding rod 3 can only extend in one direction before the reset mechanism is triggered.
In addition, a rotation lug is included for rotating the adjustment bolt 26.
The structure of the one-way sliding rod in the liftable desk is shown in the figure 3, the figure 4 and the figure 5; the one-way sliding rod further comprises an upper rod 31, a lower rod 32, a reset block 33, a swing rod 34 and a spring 35;
a sliding groove 37 is formed in the lower rod 31, a positioning groove 36 is formed in the side face of the sliding groove 37, and a plurality of ratchet teeth 361 inclining upwards are arranged on the positioning groove 36;
the upper rod 31 and the reset block 33 are slidably mounted in the sliding groove 37 in an overlapping manner;
the swing rod 34 is rotatably mounted on the upper rod 31, one end of the spring 35 is connected with the swing rod 34, the other end of the spring 35 is connected with the upper rod 31, and the swing rod 34 is provided with an eccentric convex rod 341;
the reset block 33 is provided with a swing hole 331, the protruding rod 341 passes through the swing hole 331 on the reset block 33 and is placed in the positioning slot 36, the swing hole 331 is large enough, the protruding rod can move in the swing hole 331, and the swing rod 34 enables the protruding rod 341 to be clamped between the ratchets 361 under the action of the spring, so that the effect of limiting the downward sliding of the upper rod 31 relative to the lower rod 32 is achieved;
the upper end of the positioning slot 36 is provided with a reset long slot 362, the lower end of the swing hole 331 is provided with a reset groove 332, and the friction coefficient between the upper rod 31 and the reset block 33 is smaller than the friction coefficient between the lower rod 32 and the reset block 33. The protruding rod 341 can move downward into the reset groove 332 after entering the reset elongated slot 362. Furthermore, a projection for limiting the reset block 33 is provided between the middle and the end of the upper lever 31. The projection serves to maintain the reset block 33 in an overlapped state with the upper lever 31.
In use, when the upper lever 31 moves upward, the restoring block 33 moves downward relative to the upper lever 31 at this time due to the large frictional force between the restoring block 33 and the lower lever 32. At this time, the protruding rod 341 cannot enter the reset groove 332, and the protruding rod 341 can be locked between the ratchets 361 by the spring.
When the upper rod 31 is moved up to the top, the protruding rod 341 is disengaged from the groove between the ratchets 361 and enters the reset elongated slot 362. When the upper rod 31 moves downward, the friction between the reset block 33 and the lower rod 32 is large, so that the upper rod 31 moves downward relative to the reset block 33, and the protruding rod 341 enters the reset groove 332, thereby preventing the protruding rod 341 from entering between the ratchets 361 under the action of the spring, and ensuring that the upper rod 31 can move downward until the upper rod 31 moves upward again.
The above structure discloses a new one-way slide bar which is compact in structure and suitable for being installed in a table foot. In addition, the device has the advantages of good use effect, difficulty in failure, firm structure and the like.
Example 2
A liftable tablet chair is the same as a liftable desk in embodiment 1 in principle and comprises a chair surface and supporting legs, wherein the supporting legs are installed at the lower end of the chair surface, each supporting leg comprises a telescopic sleeve consisting of an inner tube and an outer tube and a one-way sliding rod installed in the telescopic sleeve, each outer tube comprises an outer metal layer and an inner plastic layer, a threaded hole is formed in the side wall of each outer tube, an adjusting bolt is arranged in each threaded hole, the outer tube and the inner tube can be fixed through the adjusting bolt, two ends of each one-way sliding rod are respectively connected with the inner tube and the outer tube, a reset mechanism is arranged on each one-way sliding rod, and each one-way sliding rod can only extend in one way before the reset mechanism is.
Specifically, the one-way sliding rod further comprises an upper rod, a lower rod, a reset block, a swinging rod and a spring;
the lower rod is provided with a sliding groove, the side surface of the sliding groove is provided with a positioning groove, and the positioning groove is provided with a plurality of ratchets which incline upwards;
the upper rod and the reset block are slidably mounted in the sliding groove in an overlapping mode;
the swing rod is rotatably arranged on the upper rod, one end of the spring is connected with the swing rod, the other end of the spring is connected with the upper rod, and the swing rod is provided with an eccentric convex rod;
the reset block is provided with a swing hole, the convex rod penetrates through the swing hole in the reset block and is arranged in the positioning groove, and the swing rod enables the convex rod to be clamped between the ratchet teeth under the action of the spring;
the upper end of the positioning groove is provided with a reset long groove, the lower end of the swing hole is provided with a reset groove, the friction coefficient between the upper rod and the reset block is smaller than that between the lower rod and the reset block, and the convex rod can move downwards to enter the reset groove after entering the reset long groove.
The invention has the beneficial effects that: the height of the desk can be adjusted in a stepless mode, the most suitable height can be adjusted according to requirements, the safety performance of the whole desk is guaranteed while stepless adjustment is achieved, the desk is more convenient and safe to use, and the desk further has the advantages of being long in service life and the like.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. The lifting desk comprises a desktop (1) and supporting legs (2), wherein the supporting legs (2) are arranged at the lower end of the desktop (1), and is characterized in that the supporting legs (2) comprise telescopic sleeves formed by an inner tube (21) and an outer tube (22) and one-way sliding rods (3) arranged in the telescopic sleeves, the outer tube (22) comprises a metal layer (24) at the outer side and a plastic layer (23) at the inner side, a threaded hole (25) is formed in the side wall of the outer tube (22), an adjusting bolt (26) is arranged in the threaded hole (25), the outer tube (22) and the inner tube can be fixed through the adjusting bolt (26), two ends of the one-way sliding rod (3) are respectively connected with the inner tube (21) and the outer tube (22), a reset mechanism is arranged on the one-way sliding rod (3), and before the reset mechanism is triggered, the unidirectional sliding rod (3) can only extend in one direction;
the one-way sliding rod (3) further comprises an upper rod (31), a lower rod (32), a reset block (33), a swing rod (34) and a spring (35);
a sliding groove (37) is formed in the lower rod (32), a positioning groove (36) is formed in the side face of the sliding groove (37), and a plurality of ratchet teeth (361) which incline upwards are arranged on the positioning groove (36);
the upper rod (31) and the reset block (33) are slidably mounted in the sliding groove (37) in an overlapping manner;
the swing rod (34) is rotatably arranged on the upper rod (31), one end of the spring (35) is connected with the swing rod (34), the other end of the spring (35) is connected with the upper rod (31), and the swing rod (34) is provided with an eccentric convex rod (341);
the reset block (33) is provided with a swing hole (331), the convex rod (341) passes through the swing hole (331) on the reset block (33) and is arranged in the positioning groove (36), and the swing rod (34) enables the convex rod (341) to be clamped between the ratchets (361) under the action of the spring;
a reset long groove (362) is formed in the upper end of the positioning groove (36), a reset groove (332) is formed in the lower end of the swing hole (331), the friction coefficient between the upper rod (31) and the reset block (33) is smaller than that between the lower rod (32) and the reset block (33), and the convex rod (341) can move downwards to enter the reset groove (332) after entering the reset long groove (362);
when the ratchet wheel is used, when the upper rod (31) moves upwards, the friction force between the reset block (33) and the lower rod (32) is large, the reset block (33) moves downwards relative to the upper rod (31), the convex rod (341) cannot enter the reset groove (332), and the convex rod (341) can be clamped between the ratchets (361) under the action of the spring;
when the upper rod (31) moves upwards to the top end, the convex rod (341) is separated from the groove between the ratchets (361) and enters the reset long groove (362), and when the upper rod (31) moves downwards, the upper rod (31) moves downwards relative to the reset block (33) due to the large friction force between the reset block (33) and the lower rod (32), so that the convex rod (341) can enter the reset groove (332), the convex rod (341) is prevented from entering the ratchets (361) under the action of the spring, and the upper rod (31) can move downwards all the time until the upper rod (31) moves upwards again.
2. Liftable desk according to claim 1, further comprising a rotation lug for rotating the adjusting bolt (26).
3. Liftable desk according to claim 2, characterized by comprising a plastic foot sleeve (4), wherein the plastic foot sleeve (4) is mounted at the lower end of the supporting foot (2).
4. A liftable tablet chair, which comprises a chair surface and supporting legs (2), wherein the supporting legs (2) are arranged at the lower end of the chair surface, it is characterized in that the supporting foot (2) comprises a telescopic sleeve composed of an inner pipe (21) and an outer pipe (22) and a one-way sliding rod (3) arranged in the telescopic sleeve, the outer tube (22) comprises an outer metal layer (24) and an inner plastic layer (23), a threaded hole (25) is arranged on the side wall of the outer pipe (22), an adjusting bolt (26) is arranged in the threaded hole (25), the outer pipe (22) and the inner pipe (21) can be fixed through the adjusting bolt (26), two ends of the one-way sliding rod (3) are respectively connected with the inner tube (21) and the outer tube (22), the one-way sliding rod (3) is provided with a reset mechanism, before the reset mechanism is triggered, the one-way sliding rod (3) can extend only in one direction;
the one-way sliding rod (3) further comprises an upper rod (31), a lower rod (32), a reset block (33), a swing rod (34) and a spring (35);
a sliding groove (37) is formed in the lower rod (32), a positioning groove (36) is formed in the side face of the sliding groove (37), and a plurality of ratchet teeth (361) which incline upwards are arranged on the positioning groove (36);
the upper rod (31) and the reset block (33) are slidably mounted in the sliding groove (37) in an overlapping manner;
the swing rod (34) is rotatably arranged on the upper rod (31), one end of the spring (35) is connected with the swing rod (34), the other end of the spring (35) is connected with the upper rod (31), and the swing rod (34) is provided with an eccentric convex rod (341);
the reset block (33) is provided with a swing hole (331), the convex rod (341) passes through the swing hole (331) on the reset block (33) and is arranged in the positioning groove (36), and the swing rod (34) enables the convex rod (341) to be clamped between the ratchets (361) under the action of the spring;
the upper end of the positioning groove (36) is provided with a resetting long groove (362), the lower end of the swing hole (331) is provided with a resetting groove (332), the friction coefficient between the upper rod (31) and the resetting block (33) is smaller than that between the lower rod (32) and the resetting block (33), and the convex rod (341) can move downwards to enter the resetting groove (332) after entering the resetting long groove (362).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410711849.XA CN104397998B (en) | 2014-11-28 | 2014-11-28 | Liftable desk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410711849.XA CN104397998B (en) | 2014-11-28 | 2014-11-28 | Liftable desk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104397998A CN104397998A (en) | 2015-03-11 |
| CN104397998B true CN104397998B (en) | 2021-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410711849.XA Active CN104397998B (en) | 2014-11-28 | 2014-11-28 | Liftable desk |
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| Country | Link |
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| CN (1) | CN104397998B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546295A (en) * | 2015-12-21 | 2016-05-04 | 河北汉光重工有限责任公司 | Stepless regulation overturning supporting mechanism for displayer |
| CN105671715A (en) * | 2016-04-15 | 2016-06-15 | 吴江市元通纺织品有限公司 | Guide bar frame for spinning |
| CN107755057A (en) * | 2017-12-13 | 2018-03-06 | 天津城建大学 | Simple pop can ingredient separating device and its method of work |
| CN109398598A (en) * | 2018-10-31 | 2019-03-01 | 沪东中华造船(集团)有限公司 | A kind of general-purpose pedestal and installation and application for the middle-size and small-size equipment installation of shipbuilding |
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| CN201439781U (en) * | 2009-08-10 | 2010-04-21 | 厦门谊瑞货架有限公司 | Telescopic rod adjusting device |
| CN202858292U (en) * | 2012-09-27 | 2013-04-10 | 浙江德清荣华家具有限公司 | Multifunctional lifting desk |
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| CN2380103Y (en) * | 1999-06-15 | 2000-05-31 | 蒋雯 | Lifting table |
| CN1778228A (en) * | 2004-11-25 | 2006-05-31 | 张劲潇 | Instant liftable table |
| CN101442921B (en) * | 2004-12-17 | 2012-11-14 | 斯蒂尔凯斯发展股份有限公司 | Height adjustable table |
| CN101023826A (en) * | 2006-02-17 | 2007-08-29 | 张劲潇 | Conveniently lifting mechanism of lifting table |
| CN201260491Y (en) * | 2008-08-06 | 2009-06-24 | 公隆实业股份有限公司 | Three-in-one table rack |
| CN101524212B (en) * | 2009-04-02 | 2013-05-29 | 章启江 | Lifting table with rotatably adjusting structure |
| CN201630555U (en) * | 2010-03-26 | 2010-11-17 | 漳州建晟家具有限公司 | Free lifting table |
| CN202774917U (en) * | 2012-07-10 | 2013-03-13 | 温州市航标实业有限公司 | Automatic rising-lowering lifting table |
| US20140238279A1 (en) * | 2013-02-25 | 2014-08-28 | Anthony Paul Maas | Height Adjustable Work Surface |
| CN104026870B (en) * | 2014-05-08 | 2016-03-30 | 湖北理工学院 | A kind of multifunctional desk and chair |
| CN103976567B (en) * | 2014-05-20 | 2015-11-18 | 湖南大学 | A kind of multifunctional desk |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201439781U (en) * | 2009-08-10 | 2010-04-21 | 厦门谊瑞货架有限公司 | Telescopic rod adjusting device |
| CN202858292U (en) * | 2012-09-27 | 2013-04-10 | 浙江德清荣华家具有限公司 | Multifunctional lifting desk |
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| Publication number | Publication date |
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| CN104397998A (en) | 2015-03-11 |
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Address after: 315000 No.1 dafengche Road, Zhangting Town Industrial Development Zone, Yuyao City, Ningbo City, Zhejiang Province Applicant after: ZHEJIANG DAFENGCHE EDUCATION EQUIPMENT Co.,Ltd. Address before: 315000 No.1 dafengche Road, Zhangting Town Industrial Development Zone, Yuyao City, Ningbo City, Zhejiang Province Applicant before: Ningbo Dafengche Education Equipment Co.,Ltd. |
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