CN210988799U

CN210988799U - Folding table

Info

Publication number: CN210988799U
Application number: CN201921474808.8U
Authority: CN
Inventors: 陶声荣; 李晓刚
Original assignee: Changzhou Lant Gas Spring Co ltd
Current assignee: Changzhou Lant Gas Spring Co ltd
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2020-07-14
Anticipated expiration: 2029-09-06

Abstract

The utility model discloses a folding table, which comprises a table top; desk legs; a grounding part supported on the ground or the table top; further comprising: a second hinged lock which locks the table leg and the grounding part after the table leg and the grounding part rotate relatively to each other, wherein one end of the second hinged lock is connected with the other end of the table leg, and the other end of the second hinged lock is connected with the grounding part; the table leg or the grounding part rotates relatively to each other in a non-locking state, and the second hinged lock locks the table leg and the grounding part at an included angle of 0-90 degrees formed by the table leg and the grounding part. The utility model has the advantages of be convenient for accomodate, transport or carry and occupation space is little.

Description

Folding table

Technical Field

The utility model relates to a folding table.

Background

An office table is generally composed of a table top, table legs, and a ground part, wherein one ends of the table legs are connected to the table top, and the other ends of the table legs are connected to the ground part. CN103126300A discloses a folding table, in which a table top is connected with legs via a folding mechanism, so that the table top can be folded at 90 degrees relative to the legs.

With the folding table of the above structure, although the table top can rotate relative to the legs, after the table top is rotated, the axial direction of the table top is either parallel to the axial direction of the legs or perpendicular to the axial direction of the legs, and the table top is not fixed within the 90-degree rotation interval. For example, when the table top is tilted by 30 degrees relative to the legs, the user needs to use the table top at the tilted angle at which the table top cannot be fixed. Therefore, the user cannot use the table in a state that the table top is inclined.

In addition, the folding table with the structure has the advantages that the table legs are fixedly connected with the grounding part, namely the table legs and the grounding part cannot be folded, so that the folding table occupies space in the transportation or carrying process and is inconvenient to transport or carry.

Disclosure of Invention

The utility model provides a folding table which can lock the included angle formed by the table top and the table legs to be 0 to 90 degrees after the table top and the table legs are relatively rotated.

The technical scheme for solving the technical problems is as follows:

a folding table comprising:

a desktop;

desk legs;

a grounding part supported on the ground or the table top;

further comprising:

a second hinged lock which locks the table leg and the grounding part after the table leg and the grounding part rotate relatively to each other, wherein one end of the second hinged lock is connected with the other end of the table leg, and the other end of the second hinged lock is connected with the grounding part;

the table leg or the grounding part rotates relatively to each other in a non-locking state, and the second hinged lock locks the table leg and the grounding part at an included angle of 0-90 degrees formed by the table leg and the grounding part.

The utility model has the advantages that: when the desk legs and the grounding part are folded relatively to each other, a user can enable the included angle formed by the desk legs and the grounding part to be 0-90 degrees and enable the desk legs and the grounding part not to rotate relatively to each other, and the folding desk with the structure has the advantages of convenience in storage, transportation or carrying and small occupied space.

Drawings

FIG. 1 is a schematic view of a folding table with single leg, in which the included angle between the table top and the leg is locked at 90 ° and the included angle between the leg and the grounding part is locked at 90 °;

FIG. 2 is a schematic view of a first bracket;

FIG. 3 is a schematic view of a second bracket;

FIG. 4 is a perspective view of a first hinge lock;

FIG. 5 is a perspective view of the first hinge lock viewed from another direction;

FIG. 6 is a schematic view of the first hinge lock with the second housing concealed;

FIG. 7 is a schematic illustration of the drive plate hidden from view in FIG. 6;

FIG. 8 is a schematic illustration of the star wheel hidden from view in FIG. 7;

FIG. 9 is a cross-sectional view of FIG. 1;

FIG. 10 is a schematic view of a first connecting seat;

FIG. 11 is a schematic view of a second connecting seat;

figure 12 is a schematic view of the table top with the legs folded to lock the angle between the table top and the legs at 45 degrees;

figure 13 is a schematic view showing the table top and legs locked at an angle of 0 after being folded;

FIG. 14 is a schematic view of FIG. 13 with the angle to the ground portion being locked at 0 °;

FIG. 15 is a schematic view of a second embodiment of a second hinge lock;

FIG. 16 is a schematic view of a third embodiment of a second hinge lock;

figure 17 is a schematic view of a folding table with two legs;

figure 18 is another view of a folding table with two legs (with the body of the table top hidden);

the labels in fig. 1 to 18 are as follows:

a is a handle, and B is a loop;

1 is a desktop body, 2 is a first top, 3 is a first lug, 3a is a first assembling hole, 3b is a first shaft hole, 4 is a second lug, 4a is an arc-shaped groove, 4b is a hole, 5 is a table leg body, 5a is a lifting air pressure bar, 5b is an inner sleeve, 5c is an outer sleeve, 6 is a second top, 7 is a third lug, 7a is a first mounting hole, 8 is a fourth lug, 8a is a guide pin, 8b is a hinge shaft, 9 is a first shell, 9a is a first circumferential positioning part, 9b is a first hole, 9c is a second hole, 9d is a guide block, 9e is a guide groove, 9f is a jack, 9g is a first groove, 10 is a locking block, 10a is a boss, 10b is a second gear tooth, 11 is a transmission disc, 11a groove body, 12 is a second shell, 12a is a second circumferential positioning part, 13 is a transmission shaft, 14 is a star wheel or torsion spring, 15 is a vortex spring, 15a is a butting part, and 15b is a blocking part;

16 is a grounding part, 17 is a first connecting seat, 17a is a groove, 18 is a second connecting seat, 18a is a first assembling hole, 18b is a second assembling hole, 18c is a fixing part, 18d is a hinge part, 19 is an elastic part, 20 is a tongue part, 21 is a rod part, 21a is a first flange, 22 is a connecting part, 22a is a second flange, 23 is a sliding block, 24 is an electric motor, 25 is a first linear transmission part, and 26 is a second linear transmission part.

Detailed Description

The first embodiment is as follows:

as shown in fig. 1, the folding table of the present invention comprises a table top, table legs for supporting the table top, and a first hinge lock for rotating the table legs or the table top in an unlocked state relative to each other, and the following detailed description is provided for each part and the relationship between them:

as shown in fig. 1 to 2, the desktop includes a desktop body 1 and a first bracket, the first bracket includes a first top portion 2 fixed to the desktop body 1 and a first ear portion 3 connected to one end of the first hinge lock, and the first top portion 2 is fixed to the desktop body 1 by a bolt. The first ear 3 is arranged at one end of the first top 2, the first ear 3 and the first top 2 having a first angle therebetween, preferably 90 °. Preferably, the first top 2 is bent to form a first ear 3, so that a first included angle is formed between the first top 2 and the first ear 3.

As shown in fig. 1 to 2, the first support further includes a second ear portion 4 hinged to the leg, and the second ear portion 4 is disposed at the other end of the first top portion 2. The second ear 4 has a second angle, preferably 90 °, with the first tip 2. Preferably, the first top 2 is bent to form the second ear 4, so that a second included angle is formed between the first top 2 and the second ear 4. After the first ear 3 and the second ear 4 are respectively arranged at the two ends of the first top 2, the section of the first bracket is in an inverted U shape.

As shown in fig. 1 and 3, the table leg comprises a table leg body 5 and a second support, the second support comprises a second top portion 6 fixed with the table leg body and a third ear portion 7 connected with the other end of the first hinge lock, and the second top portion 6 is fixedly connected with the table leg body through a screw. The third ear 7 is arranged at one end of the second top 6. The third ear 7 has a third angle, preferably 90 °, with the second tip 6. Preferably, the second top portion 6 is bent to form a third ear portion 7, so that a third included angle is formed between the second top portion 6 and the third ear portion 7.

As shown in figures 1 and 3, the second bracket further includes a fourth ear 8 hingedly connected to the table top, and the fourth ear 8 is disposed at the other end of the second top portion 6. The fourth ear 8 is at a fourth angle, preferably 90 °, to the second tip 6. Preferably, the second top portion 6 is bent to form a fourth ear portion 8, so that a fourth included angle is formed between the second top portion 6 and the fourth ear portion 8. After the third ear part 7 and the fourth ear part 8 are respectively arranged at two ends of the second top part 6, the section of the second bracket is in an inverted U shape.

As shown in fig. 1 and 3, the fourth ear 8 is hinged to the second ear 4, and preferably, an arc-shaped slot 4a and a hole 4b are provided on the second ear 4, a guide pin 8a and a hinge shaft 8b are provided on the fourth ear 8, the guide pin 8a is clearance-fitted in the arc-shaped slot 4a, and the hinge shaft 8b is clearance-fitted in the hole 4 a. When the first and second brackets are rotated relative to each other, the engagement of the guide pin 8a with the arcuate slot 4a guides the first and second brackets as they are rotated relative to each other.

As shown in fig. 1, 12 to 14, the first hinge lock locks the table legs and the table top after the table legs and the table top are rotated relative to each other, one end of the first hinge lock is connected to the table top, and the other end of the first hinge lock is connected to the table legs. The table legs or the table top rotate relatively to each other in a non-locking state, after the first hinged lock locks the table legs and the table top at an included angle of 0-90 degrees, one end of the first hinged lock is kept connected with the table top, and the other end of the first hinged lock is kept connected with the table legs, so that the table top and the table legs are limited to rotate relatively to each other.

As shown in fig. 1 to 3 and 4 to 8, one end of the first hinge lock is connected to the first ear 3, and the other end of the first hinge lock is connected to the second ear 7. First articulated lock is including first casing 9, transmission assembly, locking piece 10, driving plate 11, second casing 12, the ring cover B that has the accommodation cavity, and first articulated lock is preferred to be connected with first ear 3 through first casing 9, and first articulated lock is preferred to be connected with second ear 7 through second casing 12. The preferred construction of the first hinge lock is described below:

as shown in fig. 1 to 3 and 4 to 8, it is preferable that a plurality of first fitting holes 3a are provided on an end surface of the first ear portion 3, and the first fitting holes 3a are preferably evenly distributed on the same circumference. A plurality of first circumferential positioning portions 9a are provided on the end surface of the first housing 9, and after the first circumferential positioning portions 9a are fitted with the first fitting holes 3a, the first housing 9 and the first ear portions 3 are made to be relatively unrotatable.

As shown in fig. 1 to 3 and 4 to 8, first shaft holes 3b are provided on end surfaces of the first ear portions 3, and preferably, the first shaft holes 3b communicate with the respective first fitting holes 3a, and after one end of the turning handle a is connected to the transmission assembly, the other end of the turning handle a passes through the first shaft hole 3b and is exposed to the air, so that a user can operate the turning handle a.

As shown in fig. 1 to 3 and 4 to 8, a plurality of first mounting holes 7a are provided on the end surface of the second ear 7, and the first mounting holes 7a are preferably uniformly distributed on the same circumference. A plurality of second circumferential positioning portions 12a are provided on the end surface of the second housing 12, and after the second circumferential positioning portions 12a are fitted to the first mounting holes 7a, the second housing 12 and the second ear portions 7 are made to be relatively non-rotatable with respect to each other.

As shown in fig. 1 to 3 and 4 to 8, during assembly, it is not necessary to fix the first housing 9 and the first ear 3 and the second housing 12 and the second ear 7 by screws, rivets or welding, but only to match the second circumferential positioning portion 12a with the first mounting hole 7a, and then match the first mounting hole 3a on the first ear 3 with the first circumferential positioning portion 9a, and then clamp the first hinge lock between the first ear 3 and the second ear 7, so that the structure makes the assembly process simple and convenient.

As shown in fig. 4 to 8, the first housing 9 is provided at a middle portion thereof with a shaft hole, preferably, a stepped hole, the shaft hole being composed of a first hole 9b and a second hole 9c, the second hole 9c having an inner diameter larger than that of the inner hole of the first hole 9 b. A plurality of guide blocks 9d positioned around the shaft hole are discretely distributed in the accommodating cavity of the first housing 9, and a guide groove 9e extending along the radial direction of the first housing 9 is formed between two adjacent guide blocks 9 d.

As shown in fig. 4 to 8, one end of the transmission assembly storing and releasing angular energy and connected to the first housing is in clearance fit with the shaft hole, preferably, the transmission assembly is in clearance fit with the first hole 9b, and the transmission assembly is rotatable relative to the first housing 9. The transmission assembly comprises a transmission shaft 13 and a volute spring or a torsion spring 14, one end of the volute spring or the torsion spring 14 is fixed with the transmission shaft 13, and the other end of the volute spring or the torsion spring 14 is fixed with the first shell 9. It is preferable that an insertion hole 9f is formed in the first housing 9, and one end of the spiral or torsion spring 14 is inserted into the insertion hole 9f, so that the spiral or torsion spring 14 is connected to the first housing 9, and the spiral or torsion spring 14 is located in the second hole 9 c.

As shown in fig. 4 to 8, the lock piece 10 is loosely fitted in the guide groove 9e, and a projection 10a is provided on the lock piece 10. The transmission plate 11 drives the locking block 10 to move along the radial direction of the first housing 9, when the locking block 10 is combined with the second housing 12, the first housing 9 and the second housing 12 are locked, and when the locking block 10 is separated from the second housing 12, the first housing 9 and the second housing 12 are unlocked.

As shown in fig. 4 to 8, the transmission disc 11 is connected to the other end of the transmission assembly, preferably, the other end of the transmission shaft 13 is polygonal, a polygonal through hole is formed in the transmission disc 11, and the other end of the transmission shaft 13 is matched with the through hole to form power transmission along the circumferential direction.

The transmission disc 11 is provided with a plurality of groove bodies 11a, the width of one end of each groove body 11a is smaller than that of the other end, the groove bodies 11a preferably adopt the shape shown in fig. 6, the groove bodies 11a can also adopt a structure that the width of one end is gradually narrowed towards the other end, the protruding parts on the locking blocks are positioned in the groove bodies 11a, and when the transmission disc 11 rotates, the wall surfaces of the groove bodies 11a drive the protruding parts 10a to drive the locking blocks 10 to move along the radial direction of the first shell 9.

As shown in fig. 4 to 8, one end of the second housing 12 is loosely fitted in the receiving cavity of the first housing 9, and the collar B sleeves the first housing 9 and the second housing 12 along the circumferential direction of the first housing 9 and the second housing 12. The angular energy released by the transmission assembly keeps the locking block 10 engaged with the second housing 12 through the transmission disc 11 to restrict the first and

second housings

9 and 12 from rotating relative to each other.

As shown in fig. 4 to 8, when a torque is applied to the transmission shaft 13, the transmission shaft 13 rotates forward, the transmission shaft 13 drives the transmission disc 11 to rotate forward, the wall surface of the groove 11a drives the protrusion 10a to drive the lock block 10 to move along the radial direction of the first housing 9 along the center of the first housing 9, the lock block 10 loses the locking effect on the second housing 12, and thus the first housing 9 and the second housing 12 can rotate relative to each other. When the transmission shaft 13 rotates forward, the spiral spring or the torsion spring 14 is elastically deformed, and the spiral spring or the torsion spring 14 accumulates energy.

As shown in fig. 4 to 8, when the torque applied to the transmission shaft 13 is released, the spiral spring or torsion spring 14 releases the stored energy to rotate the transmission shaft 13 in the reverse direction. When the transmission shaft 13 rotates reversely, the transmission disc 11 is driven to rotate reversely, and the wall surface of the groove body 11a drives the protrusion 10a to drive the locking block 10 to move along the radial direction of the first shell 9 towards the center direction far away from the first shell 9. Until the locking piece 10 is combined with the second housing 12 to enable the locking piece 10 and the second housing 12 to form a locking effect again, at the moment, the first housing 9 and the second housing 12 cannot rotate relative to each other.

As shown in fig. 4 to 8, preferably, the inner peripheral surface of the second housing 12 is provided with first gear teeth 12a, one end of the locking piece 10, which is matched with the second housing 12, is provided with second gear teeth 10b, and the first gear teeth 12a are engaged with the second gear teeth 10b, so that the locking piece 10 and the second housing 12 are combined to form a locking effect on the first housing 9 and the second housing 12.

As shown in fig. 4 to 8, preferably, the first hinge lock further includes a star wheel 15, the transmission assembly passes through the star wheel 15, that is, the transmission shaft 13 passes through the star wheel 15, the transmission shaft 13 drives the star wheel 15 to rotate, and an abutting portion 15a for abutting against the lock block 10 when the lock block 10 is kept combined with the second housing 12 is arranged on the circumferential surface of the star wheel 15.

The abutting part 15a has an abutting effect on the locking block 10, so that the locking block 10 is prevented from being loosened from the combination with the second shell, when the transmission shaft 13 rotates forwards, the abutting part 15a is separated from the locking block 10, the circumferential surface of the star wheel 15 is in contact with the locking block 10, and a space for radial displacement of the locking block 10 is formed between the abutting end part of the abutting part 15a and the locking block 10 and the circumferential surface of the star wheel 15.

As shown in fig. 4 to 8, the guide block 9d is provided with a first groove 9g, and the circumferential surface of the star wheel 15 is further provided with a blocking portion 15b which is matched with the first groove 9g to limit the rotation angle of the star wheel 15 and the transmission assembly. By the engagement of the stopper 15b with the first groove 9g, the scroll spring or the torsion spring 14 can be prevented from being damaged in the case of the excessive rotation of the transmission shaft 13.

As shown in fig. 4 to 8, by the above-mentioned structure of the first hinge lock, when the lock block 10 is combined with the second housing 12, the first housing 9 and the second housing 12 cannot be rotated relative to each other, and the table top cannot be rotated relative to the legs, so that the table top and the legs cannot be folded relative to each other.

After a torque is applied to the transmission shaft 13, the transmission shaft 13 rotates positively, the transmission shaft 13 drives the transmission disc 11 to rotate positively, the wall surface of the groove body 11a drives the protruding portion 10a to drive the locking block 10 to move radially towards the center of the first shell 9 along the first shell 9, the locking block 10 and the second shell 12 are in a separation state, the locking block 10 loses a locking effect on the second shell 12, therefore, the first shell 9 and the second shell 12 can rotate relative to each other, and the table top and the table legs form a folding state relative to each other. Since the locking piece 10 is engaged with the second housing 12 by means of gear teeth or friction members, the table top and the legs form an included angle of 0 to 90 ° when they are folded with respect to each other.

As shown in fig. 1 and 9, the foldable table of this embodiment further includes a grounding portion 16 supported on the ground or the table top, and a second hinge lock for locking the legs and the grounding portion 16 after the legs and the grounding portion 16 are rotated relative to each other, one end of the second hinge lock is connected to the other end of the legs, and the other end of the second hinge lock is connected to the grounding portion; after the table legs or the grounding part are rotated relatively to each other in a non-locking state, the second hinged lock locks the table legs and the grounding part at an included angle of 0-90 degrees formed by the table legs and the grounding part.

As shown in fig. 9 to 11, it is preferable that the second hinge lock maintains the connection with the leg and the grounding part 16 after the leg and the desk are locked at an angle of one of 0 to 90 ° with respect to the desk top, and the second hinge lock maintains the connection with the grounding part 16 to restrict the leg and the grounding part 16 from rotating relative to each other.

As shown in fig. 9 to 11, the second hinge lock includes a first connecting base 17 fixed to the ground portion 16 and a lock, the first connecting base 17 is preferably fixed to the ground portion 16 by a screw, the ground portion 16 preferably includes a support portion and a wheel, the wheel is connected to the support portion, and the ground portion 16 having such a structure is movable as a whole. The structure of the second hinge lock is explained below:

as shown in fig. 9 to 11, at least two grooves 17a are formed on the circumferential surface of the first connecting seat 17; the number of the grooves 17a may be set as desired, for example, three or four or more. One end of the lock is fixed with the desk leg, the other end of the lock is hinged with the first connecting seat 17, when the lock is combined with any one groove 17a on the first connecting seat 17, the desk leg and the grounding part 16 can not rotate relatively, and when the lock is separated from any one groove 17a on the first connecting seat 17, the desk leg and the grounding part 16 can rotate relatively.

As shown in fig. 9 to 11, the lock includes a second connecting seat 18, an elastic member 19, a tongue portion 20, and a transmission mechanism, the second connecting seat 18 is hinged to the first connecting seat 17, a first assembling hole 18a extending along an axial direction of the second connecting seat 18 is disposed on the second connecting seat 18, a second assembling hole 18b extending along a transverse direction of the second connecting seat is disposed on the second connecting seat 18, and both the first assembling hole 18a and the second assembling hole 18b are through holes.

As shown in fig. 9 to 11, the elastic member 19 is located in the first assembly hole 18a, the elastic member 19 is preferably a spring, one end of the elastic member 19 is limited by the second connecting base 18 or the leg body 5, when the first assembly hole 18a is a stepped hole, the elastic member 19 is limited by the step of the first assembly hole, and when the end of the leg body 5 is inserted into the first assembly hole 18a, the elastic member 19 may be limited by the end of the leg body 5.

As shown in fig. 9 to 11, one end of the tongue portion 20 is located in the first fitting hole 18a and connected to the elastic member 19, and the other end of the tongue portion 20 is a free end combined with or separated from the groove 17a, and when the tongue portion 20 is inserted into the groove 17a, the tongue portion 20 performs a locking function on the first coupling seat 17 and the second coupling seat 18, and the first coupling seat 17 and the second coupling seat 18 cannot rotate relative to each other. When the tongue 20 is completely withdrawn from the groove 17a, the locking of the first and second coupling seats 17 and 18 is released, and the first and second coupling seats 17 and 18 can be rotated relative to each other.

As shown in fig. 9 to 11, the tongue portion 20 is axially displaced along the first fitting hole by the transmission mechanism, a part of the transmission mechanism is engaged with the tongue portion 20 after passing through the second fitting hole 18b, another part of the transmission mechanism is exposed to the air, and the height of the transmission mechanism is smaller than that of the second fitting hole 18 b.

As shown in fig. 9 to 11, the transmission mechanism is a manual transmission mechanism including a rod portion 21, and the second fitting hole 18b is a kidney-shaped hole or a rectangular hole, so that the height or the outer diameter of the rod portion 21 is smaller than the height of the second fitting hole. At least one end of the rod portion 21 is exposed to the air, one end of the rod portion 21 passes through the second fitting hole 18b and the tongue portion and then is exposed to the air, and the other end of the rod portion 21 is also exposed to the air.

As shown in fig. 9 to 11, when both ends of the lever part 21 are gripped by a thumb and a forefinger and the lever part 21 is pushed to compress the elastic members 19, the lever part 21 drives the tongue part 20 to be axially displaced along the first fitting hole 18a, thereby separating the tongue part 20 from the groove 17a, and the leg and the ground connecting part 16 can be rotated relative to each other, thereby folding the ground connecting part 16 between 0 and 90 ° relative to the leg.

As shown in fig. 9 to 11, one end of the rod portion 21 is provided with a mounting hole, and the other end of the rod portion 21 is provided with a first flange 21a for increasing a contact area. The manual transmission mechanism further includes a connecting member 22, one end of the connecting member 22 is inserted into the mounting hole of the rod portion 21 to be fixed to the rod portion 21, and the other end of the connecting member 22 is provided with a second flange 22a for increasing a contact area. Preferably, the mounting hole on the shaft portion 21 is a threaded hole, and the connecting member 22 is a bolt.

As shown in fig. 9 to 11, the second connecting section 18 includes a fixing section 18c connected to the leg and a hinge section 18d hinged to the first connecting section 17, the first and second

fitting holes

18a and 18b are formed in the fixing section 18c, the hinge section 18d is formed in two pieces and is disposed at one end of the fixing section, and a part of the tongue section 20 is formed between the two hinge sections 18 d.

As shown in fig. 9 to 11, preferably, the table leg body 5 includes: a lifting pneumatic rod 5a, an inner sleeve 5b and an outer sleeve 5c, wherein one end of the lifting pneumatic rod 5a is fixedly connected with the second hinge joint in a locking way. One end of the lifting pneumatic rod 5a is fixedly connected with the second connecting seat 18, one part of the lifting pneumatic rod 5a is positioned in the inner sleeve 5b, and the other end of the lifting pneumatic rod 5a is fixed with one end of the outer sleeve 5c or the second support.

As shown in fig. 9 to 11, one end of the inner sleeve 5b is fixedly connected to the second hinge lock, the inner sleeve 5b is sleeved on the fixing portion 18c and fastened to the fixing portion 18c, preferably, the inner sleeve 5b is fitted to the fixing portion 18c in an interference manner, and a yielding hole 5d is formed in a side surface of the inner sleeve 5b, so that the end of the rod portion 21 passes through the yielding hole 5d, and the yielding hole 5d is a kidney-shaped hole or a rectangular hole. The outer sleeve 5c is sleeved on the inner sleeve 5b, and the outer sleeve 5c is in clearance fit with the inner sleeve 5 b. One end of the outer sleeve 5c is fixed with the other end of the lifting pneumatic rod 5a or the second bracket, preferably, one end of the outer sleeve 5c is fixed with the second top part 6, and the outer sleeve 5a is lifted along with the lifting pneumatic rod 5 a.

As shown in fig. 9 to 11, the cooperation between the inner tube 5b and the outer tube 5c shields the lifting air pressure bar 5a, so that the movement of the lifting air pressure bar 5a cannot be observed when the lifting air pressure bar 5a drives the table top to move up and down, which contributes to enhancing the aesthetic appearance of the folding table when in use.

The structure of the folding table of the present invention is not limited to the above-mentioned embodiments, for example:

(a) for the first hinge lock, the combination of the lock block 10 and the second housing 12 is not limited to the above-mentioned gear tooth fit, and may also be: the inner peripheral surface of the second housing 12 is provided with a first friction member, the end of the lock block 10, which is matched with the second housing 12, is provided with a second friction member, the first friction member and the second friction member are both made of materials with high friction coefficients, and the friction coefficients of the first friction member and the second friction member can be increased by increasing the roughness of the surfaces. The first housing 9 and the second housing 12 are made non-rotatable relative to each other by the fitting force of the first friction member and the second friction member.

(b) For the second hinge lock, the following structure may be adopted:

as shown in fig. 15, the lock includes a second connecting seat 18, a tongue 20, and a driving device, wherein at least two grooves 17a are formed on the circumferential surface of the first connecting seat 17, and the second connecting seat 18 is hinged to the first connecting seat 17. A first fitting hole 18a extending along the axial direction of the second coupling seat is formed in the second coupling seat 18, and a second fitting hole 18b extending along the lateral direction of the second coupling seat is formed in the second coupling seat 18. One end of the tongue 20 is positioned in the first fitting hole 18a, and the other end of the tongue 20 is a free end coupled to or separated from the groove 17 a.

As shown in fig. 15, the driving device causes the tongue portion 20 to move axially along the first assembling hole 18a, the driving device includes a transmission mechanism and a driving mechanism, the driving mechanism is fixed on the second connecting seat 18 or the table leg, the output end of the driving mechanism is connected with one end of the transmission mechanism, the other end of the transmission mechanism passes through the second assembling hole 18b and then is matched with the tongue portion 20, the height of the transmission mechanism is smaller than that of the second assembling hole 18b, and the transmission mechanism preferably adopts the rod portion 21. The second fitting hole 18b is a kidney-shaped hole or a rectangular hole, and thus, the height or the outer diameter of the rod portion 21 is smaller than the height of the second fitting hole 18 b.

As shown in fig. 15, the driving mechanism includes a sliding block 23 slidably engaged with the second connecting base 18 or the leg, and an elastic member 19, the sliding block 23 is exposed to the air, one end of the sliding block 23 is connected to a transmission mechanism, the transmission mechanism is a rod portion 21, that is, one end of the sliding block 23 is connected to the rod portion 21, one end of the elastic member 19 is connected to the other end of the sliding block 23, and the other end of the elastic member 19 is connected to the second connecting base 18 or the leg.

In the present embodiment, as shown in fig. 15, the outer wall of the inner sleeve 5b is provided with a slide rail 5e, the slide block 23 is slidably engaged with the slide rail 5e of the inner sleeve 5b, and the other end of the elastic component 19 is connected with the inner sleeve 5 b.

In use, when the thumb and forefinger grip the slider 23 and push the slider 23 to compress the resilient member 19, the lever portion 21 drives the tongue portion 20 to move axially along the first fitting hole 18a, thereby disengaging the tongue portion 20 from the groove 17a, and the leg and the grounding portion 16 can be rotated relative to each other, thereby folding the grounding portion 16 between 0 and 90 ° relative to the leg.

(c) The driving mechanism in the above embodiment (b) is a manual driving type, and as shown in fig. 16, an electric linear driving mechanism may be used as the driving mechanism. The electric linear driving mechanism comprises an electric motor 24, a first linear transmission part 25 and a second linear transmission part 26, wherein the output shaft of the electric motor 24 is provided with threads; the first linear transmission component 25 is sleeved on the output shaft of the electric motor 24 and is in threaded connection with the output shaft, a groove body is arranged on the circumferential surface of the first linear transmission component 25, a sliding rail 5e parallel to the axial direction of the table leg is arranged on the second connecting seat 18 or the table leg, the groove body is in clearance fit with the sliding rail 5e, the first linear transmission component 25 can be prevented from rotating through the matching of the groove body and the sliding rail 5e, and the first linear transmission component 25 is guided when moving. One end of the second linear transmission member 26 is connected with the transmission mechanism, and the other end of the second linear transmission member 26 is connected with the first linear transmission member 25. The transmission mechanism is a rod part 21, and one end of the second linear transmission part 26 is connected with the rod part 21.

As shown in fig. 16, when in use, the electric motor 24 is controlled to rotate forward, the output shaft of the electric motor 24 rotates forward to drive the first linear transmission member 25 to move linearly (upwards) along the slide rail 5e toward the desktop, the first linear transmission member 25 drives the second linear transmission member 26 to drive the rod part 21 to move upwards, so that the tongue part 20 is separated from the groove 17a, the desk leg and the grounding part 16 can rotate relative to each other, and the grounding part 16 can be folded at an angle of 0 to 90 ° relative to the desk leg. After the folding to the required angle, the electric motor 24 is controlled to rotate reversely, and the driving mechanism drives the tongue portion 20 to be inserted into the groove 17a of the corresponding angle, thereby locking the first connecting seat 17 and the second connecting seat 18.

(d) The first hinge lock for connecting the table top and the table legs can also adopt the structure of the second hinge lock.

(e) The second hinge lock connecting the table leg and the grounding part 16 may be the first hinge lock.

(f) While the folding table shown in fig. 1 has a single leg structure, the folding table may have two legs, and the connection manner of each leg to the table top and the connection manner of the legs to the grounding part 16 are the same as those of any of the above-described embodiments. As shown in fig. 17, in the present embodiment, the two first hinge locks are connected by a handle a, when the shaft is rotated by the handle a, the locking of the table top and the table legs by the two first hinge locks can be simultaneously released, after the included angle between the table top and the table legs is adjusted, the handle a is released, the first hinge locks are reset by the scroll spring or the torsion spring 14, and the table top and the table legs after the included angle is adjusted are locked.

(g) The two legs in (f) above may be constructed as shown in fig. 18, and the folding table of this construction may be constructed such that the first hinge lock is provided between the table top and the legs, the table top is foldable with respect to the legs by the first hinge lock, and the second hinge lock is not provided between the legs and the grounding part 16, so that the grounding part 16 cannot be folded with respect to the legs. In addition, the structure of the first bracket and the second bracket is different from that of the first embodiment in that: first support comprises first top 2 and first ear 3, and the second support comprises second top 6 and third ear 7, and wherein second top 6 is the crossbeam, and second top 6 both is connected with the table leg, supports desktop body 1 again. The second top part 6 is fixedly connected with the third ear part 7 through screws. One end of the second bracket is provided with a second hinge lock, and each second hinge lock is connected with a handle A, or a handle A can be adopted as in the mode (f), wherein the handle A is composed of a handle body and a shaft, the shaft is connected with the handle body, the shaft is also not connected with the two second hinges, and when the shaft is rotated through the handle body, the locking of the two first hinge locks on the table top and the table legs can be released simultaneously.

(h) The cross-sectional shapes of the inner tube 5b and the outer tube 5c may be square or circular.

Claims

1. A folding table comprising:

a desktop;

desk legs;

a grounding part supported on the ground or the table top;

it is characterized by also comprising:

2. A folding table according to claim 1, wherein said second hinged lock comprises:

the first connecting seat is fixed with the grounding part, and the circumferential surface of the first connecting seat is at least provided with two grooves;

one end of the lock is fixed with the table legs, and the other end of the lock is hinged with the first connecting seat;

when the lock is combined with any one groove on the first connecting seat, the desk leg and the grounding part can not rotate relatively, and when the lock is separated from any one groove on the first connecting seat, the desk leg and the grounding part can rotate relatively.

3. A folding table according to claim 2, wherein said lock comprises:

the second connecting seat is hinged with the first connecting seat, a first assembling hole extending along the axial direction of the second connecting seat is formed in the second connecting seat, and a second assembling hole extending along the transverse direction of the second connecting seat is formed in the second connecting seat;

an elastic member located in the first fitting hole;

one end of the tongue part is positioned in the first assembling hole and is connected with the elastic component, and the other end of the tongue part is a free end combined with or separated from the groove;

and the transmission mechanism enables the tongue part to axially displace along the first assembly hole, one part of the transmission mechanism is matched with the tongue part after passing through the second assembly hole, the other part of the transmission mechanism is exposed in the air, and the height of the transmission mechanism is smaller than that of the second assembly hole.

4. A folding table according to claim 3, wherein said drive mechanism is a manual drive mechanism comprising:

and after one end of the rod part passes through the second assembling hole and the tongue part, at least one end of the rod part is exposed in the air.

5. A folding table according to claim 4, wherein the rod portion has a mounting hole at one end thereof, and both ends of the rod portion are exposed to the air;

the manual transmission mechanism further comprises a connecting part, and one end of the connecting part is inserted into the mounting hole in the rod part and fixed with the rod part.

6. A folding table according to claim 3, wherein said second connecting base comprises:

the first assembling hole and the second assembling hole are both positioned on the fixing part;

and a hinge part hinged with the first connecting seat, wherein the hinge part is arranged at one end of the fixing part.

7. A folding table according to claim 2, wherein said lock comprises:

the second connecting seat is hinged with the first connecting seat, a first assembling hole along the axial direction of the second connecting seat is formed in the second connecting seat, and a second assembling hole along the transverse direction of the second connecting seat is formed in the second connecting seat;

one end of the tongue part is positioned in the first assembling hole, and the other end of the tongue part is a free end combined with or separated from the groove;

a driving device for axially displacing the tongue along the first mounting hole, the driving device comprising a transmission mechanism and a driving mechanism

The mechanism is fixed on the second connecting seat or the table leg, the output end of the driving mechanism is connected with one end of the transmission mechanism, the other end of the transmission mechanism is matched with the tongue part after passing through the second assembling hole, and the height of the transmission mechanism is smaller than that of the second assembling hole.

8. A folding table according to claim 7, wherein said drive mechanism comprises:

the sliding block is in sliding fit with the second connecting seat or the table leg, and one end of the sliding block is connected with the transmission mechanism;

one end of the elastic component is connected with the sliding block, and the other end of the elastic component is connected with the second connecting seat or the table leg.

9. A folding table according to any one of claims 1 to 8, wherein the second locking mechanism maintains said connection to the leg after the leg is locked to the table top at an angle of between 0 ° and 90 ° to the table top, and the second locking mechanism maintains said connection to the grounding portion to restrict the leg and grounding portion from rotating relative to each other.

10. A folding table according to any of claims 1 to 8, wherein the legs include a leg body that includes:

one end of the lifting air pressure rod is fixedly connected with the second hinge;

one end of the inner sleeve is fixedly connected with the second hinge joint in a locking way;

the outer sleeve is in clearance fit with the inner sleeve, one end of the outer sleeve is connected with the other end of the lifting air pressure rod, and the outer sleeve is lifted along with the lifting of the lifting air pressure rod.