CN220308734U - Foldable seat and combined cabinet - Google Patents

Abstract

The utility model relates to a foldable seat and a combined cabinet, which comprises a seat, wherein a cross connecting rod lifting mechanism is arranged below the seat, the seat is also provided with a locking device, the locking device comprises a bolt which can slide relative to the seat, the cross connecting rod lifting mechanism comprises two cross hinged connecting rods, a matching piece is arranged on each connecting rod, a jack is arranged on each matching piece, when the seat is in an unfolding state, the jack is aligned with the bolt, and the bolt can be inserted into the jack. The seat can be unfolded for sitting by people or folded for storage, and is convenient to use, and the storage is simple and does not occupy space. When the combined cabinet is used, the seat can be folded and stored below the cabinet body, so that people when the seat is placed outside for tripping over for a long time can be avoided, and the use safety is improved.

Description

Foldable seat and combined cabinet

Technical Field

The utility model relates to the technical field of furniture, in particular to a foldable seat and a combined cabinet.

Background

The bathroom cabinet is mainly used for washing and storing articles, and a user can stand for a long time in the process of using the bathroom cabinet, so that the problem of poor experience exists. Children may not be tall enough when using the bathroom cabinet, and use is inconvenient. In general, a parent may have a footstool beside the bathroom cabinet, which is convenient for children to use. However, when not needed, the foot stool can prevent the user from passing, and the user can be stumbled, so that potential safety hazards exist.

Disclosure of Invention

Based on the above, it is necessary to provide a foldable seat and a combined cabinet, in which the seat can be unfolded for sitting or folded for storage, and the seat is convenient to use and easy to store and occupies no space. When the combined cabinet is used, the seat can be folded and stored below the cabinet body, so that people when the seat is placed outside for tripping over for a long time can be avoided, and the use safety is improved.

A foldable seating apparatus, comprising:

the seat is provided with a cross connecting rod lifting mechanism under the seat, the seat is in an unfolding state when the cross connecting rod lifting mechanism is lifted, and the seat is in a folding state when the cross connecting rod lifting mechanism is lowered;

the seat is characterized in that the seat is also provided with a locking device, the locking device comprises a bolt which can slide relative to the seat, the cross connecting rod lifting mechanism comprises two cross hinged connecting rods, the connecting rods are provided with matching pieces, the matching pieces are provided with jacks, when the seat is in an unfolding state, the jacks are aligned with the bolts, and the bolts can be inserted into the jacks.

In one embodiment, the two connecting rods of the cross connecting rod lifting mechanism are provided with the matching pieces, each matching piece is provided with the jack, and each matching piece is arranged at the end part of the corresponding connecting rod;

the locking device comprises two bolts, and the bolts are in one-to-one correspondence with the jacks.

In one embodiment, the locking device further comprises a trapezoid and a first elastic member, wherein the first elastic member is used for providing acting force for the trapezoid, the direction of acting force provided by the first elastic member for the trapezoid is consistent with the direction from the lower bottom surface to the upper bottom surface of the trapezoid, and the two bolts are respectively in transmission fit with the two inclined planes of the trapezoid, so that the trapezoid can provide acting force for the two bolts to be respectively inserted into corresponding insertion holes at the same time.

In one embodiment, the insertion directions of the two pins are opposite, the inclined planes of the trapezoid piece face to intersect with the insertion directions of the corresponding pins, and the two pins are respectively pressed against the two inclined planes of the trapezoid piece.

In one embodiment, the locking device further comprises a device housing connected to the seat, the trapezoid being movably mounted in the device housing such that the trapezoid is slidable back and forth relative to the device housing in the direction of the force of the first elastic member, the first elastic member acting between the device housing and the trapezoid, the latch being slidably mounted on the device housing.

In one embodiment, the locking device further includes a reset elastic unit, where the reset elastic unit includes two acting portions, and the two acting portions are respectively connected or abutted with the two pins, and are used for providing a force for the corresponding pins along a direction of exiting the jack.

In one embodiment, the reset elastic unit includes two second elastic members, one ends of the two second elastic members are connected with the device housing, the other ends of the two second elastic members are connected with the two bolts respectively, and the direction of the acting force provided by the second elastic members for the bolts is opposite to the insertion direction of the corresponding bolts.

In one embodiment, each of the pins includes a sliding portion and an insertion portion that are connected to each other, the sliding portion is in sliding fit with the device housing, the insertion portion is located outside the device housing, the insertion portion is used for being inserted into a corresponding insertion hole, a connection protrusion is disposed in the device housing, along a sliding direction of the pin relative to the device housing, the two sliding portions are located at two sides of the connection protrusion, and each of the second elastic members is connected between the connection protrusion and the corresponding sliding portion;

the connecting protrusion and the second elastic piece are both positioned on one side of the trapezoid piece, each bolt further comprises an abutting part, the abutting parts are connected with the sliding parts, and the abutting parts are partially suspended outside the sliding parts and abutted to the inclined planes.

In one embodiment, the mating member has a cylindrical structure, the insertion direction corresponding to the insertion hole is perpendicular to the axial direction of the mating member, and the axial direction of the mating member is perpendicular to a movement plane defined when the two connecting rods rotate.

In one embodiment, the foldable seat further comprises two sets of support units, each set of support units comprising two support legs and a connecting rod connecting the two support legs;

the foldable seat also comprises a seat frame, the cross connecting rod lifting mechanism is assembled between the seat plate and the seat frame, so that the seat plate can lift relative to the seat frame, two groups of supporting units are arranged on the seat frame, four supporting leg parts are arranged at four corners of a rectangle, and two connecting rods penetrate through the seat frame and can rotate relative to the seat frame;

the seat frame is provided with a linkage mechanism, and the linkage mechanism is connected between the two connecting rods so that the two connecting rods can rotate in opposite directions at the same time.

In one embodiment, the linkage mechanism comprises two groups of chain transmission mechanisms, each group of chain transmission mechanisms comprises two chain wheels and a chain wound on the two chain wheels, the two connecting rods are respectively connected with one chain wheel in the two groups of chain transmission mechanisms, driving wheels are additionally arranged on the other two chain wheels in the two groups of chain transmission mechanisms, and the two driving wheels are meshed.

In one embodiment, guide pieces are arranged at positions on the seat plate corresponding to the cross connecting rod lifting mechanisms, the guide pieces are provided with first sliding grooves, the guide directions of the first sliding grooves are perpendicular to the lifting directions of the cross connecting rod lifting mechanisms, the matching pieces are in sliding fit in the first sliding grooves, the locking devices are arranged on the guide pieces, and the matching pieces are located on extension lines of the bolts;

the seat frame is provided with a first sliding groove at the action position of each connecting rod, the guiding direction of the first sliding groove is vertical to the lifting direction of the cross connecting rod lifting mechanism, the end part of each connecting rod is provided with a sliding pin, and the sliding pins are in sliding fit in the first sliding grooves;

the foldable seat comprises two crossed connecting rod lifting mechanisms which are arranged at two ends of the seat at intervals;

the seat plate is provided with two locking devices, and the two locking devices correspond to the two crossed connecting rod lifting mechanisms one by one.

A combination sideboard comprising a sideboard body and a foldable seat as claimed in any one of the preceding claims, the foldable seat being mounted in a pull-out manner to the bottom of the sideboard body.

Above-mentioned scheme provides a collapsible thing to sit on and combination sideboard, and the thing to sit on both can be expanded and supply the people to sit also can fold and accomodate, convenient to use accomodate simply and do not occupy the space. When the combined cabinet is used, the seat can be folded and stored below the cabinet body, so that people when the seat is placed outside for tripping over for a long time can be avoided, and the use safety is improved. Specifically, when needing to expand, apply a effort of lifting for the seat, two connecting rods of cross connecting rod elevating system expand in the situation, after the connecting rod expands to a certain extent along with the seat, jack on the cooperation piece of connecting rod top moves to the position counterpoint with the bolt, and the bolt inserts in the jack this moment, and then fixes between connecting rod and the seat for the seat is stable to be in the expansion state. When the seat needs to be folded and stored, the bolt is taken out of the jack, so that the locking between the connecting rod and the seat is released, and the cross connecting rod lifting mechanism can be folded to enable the seat to descend.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a foldable seat according to the present embodiment;

fig. 2 is a schematic structural view of the foldable seat according to the embodiment in another view angle;

FIG. 3 is an exploded view of a rear portion of the hidden seat panel of the foldable seat shown in FIG. 1;

fig. 4 is a schematic diagram of the foldable seat according to the present embodiment in an unfolded state;

fig. 5 is a schematic diagram of the foldable seat according to the present embodiment during storage;

FIG. 6 is an exploded view of the locking device according to the present embodiment;

FIG. 7 is an exploded view of the locking device of FIG. 6 from another perspective;

fig. 8 is a schematic structural diagram of a combination sideboard according to another embodiment.

Reference numerals illustrate:

10. a seat; 11. a seat plate; 111. a guide member; 1111. a first chute; 12. a cross connecting rod lifting mechanism; 121. a connecting rod; 122. a mating member; 1221. a jack; 123. a sliding pin; 13. a locking device; 131. a device housing; 1311. a connection protrusion; 132. a plug pin; 1321. a sliding part; 1322. an insertion section; 1323. an abutting portion; 133. a trapezoid; 1331. a rectangular plate; 1332. an inclined plate; 134. a first elastic member; 135. resetting the elastic unit; 1351. a second elastic member; 14. a mounting; 141. a second chute; 15. a supporting unit; 151. support legs; 152. a connecting rod; 16. a chain transmission mechanism; 161. a sprocket; 162. a chain; 163. a driving wheel; 20. a combination sideboard; 21. a cabinet body.

Description of the embodiments

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

Both the stool and the chair belong to the seat 10, and the foldable seat 10 refers to the seat 10 which can be folded and stored. As shown in fig. 1-3, in some embodiments, the present application provides a foldable seat 10 including a seat plate 11, a cross-link lift mechanism 12, and a locking device 13.

The cross link lifting mechanism 12 is provided under the seat plate 11 for lifting and lowering the seat plate 11. The seat 10 is in an unfolded state when the cross-link lifting mechanism 12 is lifted, and the seat 10 is in a folded state when the cross-link lifting mechanism 12 is lowered. The locking device 13 is provided to the seat plate 11.

As shown in fig. 3 to 5, the locking device 13 includes a latch 132 slidable with respect to the seat 11, the cross link lifting mechanism 12 includes two cross hinged links 121, a mating member 122 is provided on the links 121, a jack 1221 is provided on the mating member 122, when the seat 10 is in the unfolded state, the jack 1221 is aligned with the latch 132, and the latch 132 can be inserted into the jack 1221.

The two links 121 included in the cross-link lifting mechanism 12 can rotate relatively, the mating member 122 is disposed on the links 121, and the insertion hole 1221 is formed in the mating member 122. Therefore, the angle between the installation direction of the insertion hole 1221 and the longitudinal direction of the link 121 is constant, and when the link 121 rotates, the direction of the insertion hole 1221 changes. As shown in fig. 4, only when the cross link lifting mechanism 12 is lifted, the insertion hole 1221 is aligned with the insertion pin 132, and the insertion pin 132 is inserted into the insertion hole 1221, so that the relative position between the seat 11 and the link 121 is fixed, and the seat 10 is maintained in the unfolded state. When the seat 10 needs to be folded, the plug 132 is pulled out of the jack 1221, and then the two connecting rods 121 rotate relatively, as shown in fig. 5, once the connecting rods 121 rotate, the orientation of the jack 1221 changes, and the jack 1221 and the plug 132 are not aligned, so that the plug 132 cannot be inserted into the jack 1221.

In some cases, if the latch 132 is always subjected to a force, which causes the latch 132 to have a tendency to slide relative to the seat 11 in the insertion direction, the latch 132 will press against the surface of the mating member 122 when the link 121 rotates such that the receptacle 1221 is no longer aligned with the latch 132, as shown in fig. 5.

As shown in fig. 3 to 5, in some embodiments, the insertion direction of the latch 132 is perpendicular to the lifting direction of the seat plate 11. When the two links 121 are rotated relatively, the seat plate 11 is lifted and lowered synchronously, and the engaging piece 122 slides with respect to the seat plate 11 in a direction perpendicular to the lifting and lowering direction. The fitting 122 rotates with respect to the seat plate 11 while sliding with respect to the seat plate 11, so that the orientation of the insertion hole 1221 changes. The mating member 122 is positioned in the insertion direction of the latch 132, and the latch 132 can be pressed against the surface of the mating member 122 before the mating member 122 is rotated to the position where the receptacle 1221 is aligned with the latch 132.

As shown in fig. 2, in some embodiments, the seat plate is provided with guide members 111 at positions corresponding to the cross-link lifting mechanism 12, the guide members 111 are provided with first sliding grooves 1111, the guiding direction of the first sliding grooves 1111 is perpendicular to the lifting direction of the cross-link lifting mechanism 12, and the matching members 122 are slidably matched in the first sliding grooves 1111. When the two links 121 of the cross link lifting mechanism 12 relatively rotate, the engaging piece 122 rotates while sliding in the first slide groove 1111.

In some embodiments, as shown in fig. 3, the mating members 122 are disposed on two connecting rods 121 of the cross-connecting rod lifting mechanism 12, and the insertion hole 1221 is disposed on each mating member 122. Each of the engaging pieces 122 is provided at an end portion corresponding to the link 121.

The locking device 13 includes two pins 132, and the pins 132 are in one-to-one correspondence with the insertion holes 1221.

After the seat plate 11 is lifted, when the seat 10 is in the unfolded state, the two bolts 132 are respectively inserted into the two insertion holes 1221, and the seat 10 can be stably maintained in the unfolded state.

As shown in fig. 2, in some embodiments, a first sliding slot 1111 is provided on the guide 111 corresponding to each mating member 122, and the mating members 122 are fitted in the first sliding slots 1111 in a one-to-one correspondence.

Further, in some embodiments, as shown in fig. 3, 6 and 7, the locking device 13 further includes a trapezoid 133 and a first elastic member 134, where the first elastic member 134 is configured to provide a force to the trapezoid 133, and a direction of the force provided by the first elastic member 134 to the trapezoid 133 is consistent with a direction from a lower bottom surface to an upper bottom surface of the trapezoid 133. In particular, in some embodiments, one end of the first elastic member 134 is connected to or abuts against the trapezoid member 133, and the other end of the first elastic member 134 directly or indirectly acts on the seat 11, so that the trapezoid member 133 has a tendency to move relative to the seat 11 in a direction from the lower bottom surface toward the upper bottom surface of the trapezoid member 133.

The two pins 132 are respectively engaged with the two inclined surfaces of the trapezoid 133 in a driving manner, so that the trapezoid 133 can simultaneously provide the two pins 132 with a force to be respectively inserted into the corresponding insertion holes 1221.

The movement tendency of the trapezoid 133 can be transmitted to the latch 132 such that the latch 132 has a tendency to move in the insertion direction with respect to the seat plate 11. When the link 121 is rotated to a predetermined position such that the insertion hole 1221 is aligned with the insertion pin 132, the insertion pin 132 is automatically inserted into the insertion hole 1221. Before the connecting rod 121 rotates to the predetermined position, the insertion hole 1221 and the latch 132 are not aligned, and the latch 132 is pressed against the surface of the mating member 122 under the action of the trapezoid member 133.

The manner of driving engagement employed between the particular pins 132 and the corresponding inclined surfaces of the trapezoid 133 may vary, provided that it is able to transmit the movement trend of said trapezoid 133 to the pins 132, so that it always has a trend of movement in the insertion direction with respect to the seat 11. The inclined surfaces of the latch 132 and the trapezoid 133 may directly abut against each other, or an intermediate transmission structure may be provided, which is not particularly limited herein.

In particular, in some embodiments, as shown in fig. 3, 6 and 7, the insertion directions of the two pins 132 into the corresponding receptacles 1221 are opposite, and the inclined surfaces of the trapezoid 133 are oriented to intersect with the insertion direction of the corresponding pins 132, so that the two pins 132 respectively press against the two inclined surfaces of the trapezoid 133.

In the view as shown in fig. 6 and 7, an arrow F1 is a direction from the lower bottom surface toward the upper bottom surface of the trapezoid 133, which is defined as a first direction. When the trapezoidal piece 133 moves in the first direction relative to the seat 11, the displacement of the latch 132 relative to the seat 11 in the first direction is limited, and the latch 132 is pressed against the inclined surface of the trapezoidal piece 133, so that the latch 132 can only slide relative to the seat 11 in the insertion direction to adapt to the movement process of the trapezoidal piece 133, and finally the purpose of driving the latch 132 to move in the insertion direction is achieved.

As shown in fig. 3, 6 and 7, in some embodiments, the trapezoid 133 is a plate bent into a trapezoid, and the plate includes an elongated rectangular plate 1331 and two inclined plates 1332 inclined with respect to the rectangular plate 1331, and the surface of the inclined plate 1332 is an inclined plane of the trapezoid 133. One side of the two inclined plates 1332 away from the rectangular plate 1331 is located on the aforementioned lower bottom surface or upper bottom surface, and the corresponding rectangular plate 1331 is located on the aforementioned upper bottom surface or lower bottom surface.

Alternatively, the trapezoid 133 may be a block structure having a trapezoid cross-sectional shape.

Further, in some embodiments, as shown in fig. 3, 6 and 7, the locking device 13 further includes a device housing 131. The device case 131 is connected to the seat plate 11. The trapezoid member 133 is movably mounted in the device housing 131 such that the trapezoid member is slidable back and forth with respect to the device housing in the direction of the force of the first elastic member 134, the first elastic member 134 acting between the device housing 131 and the trapezoid member 133. The trapezoid 133 has a tendency to move in a first direction relative to the device housing 131 under the action of the first elastic member 134.

In particular, in one embodiment, as shown in fig. 3, 6 and 7, the trapezoid 133 includes a rectangular plate 1331 and two inclined plates 1332, the trapezoid 133 is placed in the device housing 131, the first elastic member 134 is located in a space enclosed by the trapezoid 133 and the device housing 131, and the first elastic member 134 abuts between the device housing 131 and the rectangular plate 1331. Without the constraint of the latch 132, the trapezoid 133 slides in a first direction relative to the device housing 131 under the action of the first elastic member 134.

Alternatively, in another embodiment, the trapezoid member 133 is a block structure with a trapezoid cross-section, the trapezoid member 133 is slidably disposed in the device housing 131, and the first elastic member 134 abuts between the device housing 131 and the lower bottom surface of the trapezoid member 133.

As shown in fig. 6 and 7, the latch 132 is slidably mounted on the device housing 131. The direction in which the plug 132 is slidable with respect to the device case 131 is the insertion direction of the plug 132.

The first elastic member 134 provides the trapezoidal member 133 with an elastic force that moves in the first direction, and the trapezoidal member 133 transmits this to the latch 132 so that the latch 132 has a tendency to move in the insertion direction.

In particular, in one embodiment, as shown in fig. 6 and 7, two pins 132 are slidably mounted on the device housing 131, with the two pins 132 extending from opposite walls of the device housing 131.

Still further, in some embodiments, as shown in fig. 6 and 7, the locking device 13 further includes a return elastic unit 135, where the return elastic unit 135 includes two acting portions, and the two acting portions are respectively connected to or abutted against the two pins 132, so as to provide a force for the corresponding pins 132 in a direction of exiting the receptacle 1221.

The trapezoid 133 provides a force for the latch 132 to move in the insertion direction, and the return elastic unit 135 provides a force for the latch 132 in the opposite direction. In the case that no external force is applied to the trapezoid 133, the force applied to the trapezoid 133 by the first elastic member 134 is transmitted to the latch 132 through the trapezoid 133, and the force applied to the latch 132 to move in the insertion direction is greater than the reverse force applied to the latch 132 by the return elastic unit 135. Thus, in combination, the pin 132 still has a tendency to move in the insertion direction.

As shown in fig. 1 to 3, the seat plate 11 is placed on the cross link lifting mechanism 12, the locking device 13 is provided on the seat plate 11, the seat plate 11 provides a pressing force for the link 121, and the latch 132 provides a pushing force for the mating piece 122 in the insertion direction. When the link 121 is rotated to a predetermined position, the latch 132 is inserted into the insertion hole 1221, and the seating plate 11 and the cross-link lifting mechanism 12 form a stable force-receiving structure, and the seating apparatus 10 is maintained in the unfolded state.

When the seat 10 is in the unfolded state, the return elastic unit 135 provides the latch 132 with a force opposite to the insertion direction, but the force is insufficient to cancel the force in the insertion direction provided by the trapezoid 133 to the latch 132.

When the seat 10 is required to be folded and stored, a force acting reversely in the first direction is manually provided for the trapezoid 133, the elastic force of the first elastic member 134 is overcome, the trapezoid 133 slides reversely in the first direction relative to the seat 11 or the device housing 131, the latch 132 moves reversely in the insertion direction under the action of the reset elastic unit 135 when the trapezoid 133 slides, and the latch 132 can withdraw from the insertion hole 1221. After the latch 132 exits the insertion hole 1221, the pushing force is continuously provided for the seat 11, the link 121 rotates under the action of the seat 11, the cross link lifting mechanism 12 descends, and the seat 10 is folded.

In particular, in one embodiment, as shown in fig. 2 and 3, the first direction is longitudinally upward. The trapezoid 133 may be manually provided with a downward force when folding the piece of seating apparatus 10.

Specifically, in some embodiments, as shown in fig. 6 and 7, the return elastic unit 135 includes two second elastic members 1351, one ends of the two second elastic members 1351 are connected to the device housing 131, the other ends of the two second elastic members 1351 are respectively connected to the two pins 132, and the direction of the acting force provided by the second elastic members 1351 to the pins 132 is opposite to the direction of insertion of the corresponding pins 132.

The direction indicated by the arrow F2 is the insertion direction of the plug 132 at the angle shown in fig. 6 and 7.

Alternatively, in other embodiments, the return elastic unit 135 includes a tension spring, where the tension spring is connected between the two pins 132, and the direction in which the pins 132 exit the insertion holes 1221 is the direction in which the tension spring pulls the pins 132.

In some embodiments, as shown in fig. 6 and 7, each of the pins 132 includes a sliding portion 1321, and the sliding portion 1321 is slidably engaged with the device housing 131. Each of the pins 132 includes an insertion portion 1322 connected to the sliding portion 1321, the insertion portion 1322 being located outside the device case 131, the insertion portion 1322 being configured to be inserted into a corresponding insertion hole 1221.

The device housing 131 is provided with a connection protrusion 1311, two sliding parts 1321 are respectively located at two sides of the connection protrusion 1311 along the sliding direction of the latch 132 relative to the device housing 131, and each second elastic member 1351 is connected between the connection protrusion 1311 and the corresponding sliding part 1321.

The connection protrusion 1311 and the second elastic member 1351 are located at one side of the trapezoid member 133, and each of the pins 132 further includes an abutment portion 1323, the abutment portion 1323 is connected to the sliding portion 1321, and the abutment portion 1323 is partially suspended outside the sliding portion 1321 and abuts against the inclined surface.

Taking the exploded view shown in fig. 6 as an example, a space in the device housing 131 at one side of the second elastic member 1351 and the coupling boss 1311 is used for placing the trapezoid 133. When the trapezoid 133 is placed in the device case 131, the abutment 1323 abuts against the inclined surface of the trapezoid 133, and the trapezoid 133 provides an outward sliding force to the latch 132 through the abutment 1323. The arrangement of the components in the installation layout locking device 13 is thus more compact.

In further detail, in some embodiments, as shown in fig. 3 to 5, the mating member 122 has a cylindrical structure, the insertion direction of the insertion hole 1221 is perpendicular to the axial direction of the mating member 122, and the axial direction of the mating member 122 is perpendicular to the movement plane defined when the two connecting rods 121 rotate.

As shown in fig. 4, when the cross link lifting mechanism 12 is lifted, the mating piece 122 is rotated to an angle at which the insertion holes 1221 are arranged in the insertion direction of the pins 132, and the pins 132 are inserted into the insertion holes 1221.

As shown in fig. 5, when the link 121 rotates relative to the state shown in fig. 4, the angle of the insertion hole 1221 changes, the insertion hole 1221 is not opposite to the latch 132, and the latch 132 abuts against the outer surface of the mating member 122.

As shown in fig. 3, the engaging member 122 slides on the extension of the latch 132 with respect to the seat plate 11, and the engaging member 122 is also rotatable while sliding. Although the overall height of the cross link lifting mechanism 12 shown in fig. 4 and 5 is changed, the seat 11 is lifted and lowered, so that the relative positions of the latch 132 and the mating member 122 in the longitudinal direction are not changed, and the mating member 122 changes the relative relationship between the insertion hole 1221 and the latch 132 only by rotation.

As shown in fig. 2, in one embodiment, the seat 11 is provided with guide members 111 at positions corresponding to the cross link lifting mechanism 12, the guide members 111 are provided with first sliding grooves 1111, the guiding direction of the first sliding grooves 1111 is perpendicular to the lifting direction of the cross link lifting mechanism 12, the matching members 122 are slidably matched in the first sliding grooves 1111, the locking device 13 is mounted on the guide members 111, and the matching members 122 are located on the extension line of the plug pins 132.

Further, as shown in fig. 1 to 3, the foldable seat 10 includes two cross link lifters 12, and the two cross link lifters 12 are arranged at both ends of the seat 11 at intervals;

the seat is provided with two locking devices 13, and the two locking devices 13 are in one-to-one correspondence with the two crossed connecting rod lifting mechanisms 12.

As shown in fig. 1-3, in some embodiments, the foldable seat 10 further includes a seat frame 14, and the cross-link lifting mechanism 12 is assembled between the seat plate 11 and the seat frame 14 such that the seat plate 11 can be lifted with respect to the seat frame 14.

Further, in some embodiments, as shown in fig. 1 to 3, the foldable seat 10 further includes two sets of support units 15, each set of support units 15 including two support legs 151 and a connecting rod 152 connecting the two support legs 151;

the two groups of supporting units 15 are all arranged on the seat frame 14, the four supporting legs 151 are distributed at four corners of a rectangle, and the two connecting rods 152 penetrate through the seat frame 14 and can rotate relative to the seat frame 14;

the seat frame 14 is provided with a linkage mechanism, and the linkage mechanism is connected between the two connecting rods 152 so that the two connecting rods 152 can rotate in opposite directions at the same time.

When the seat frame 14 is stored, one of the supporting units 15 is rotated relative to the seat frame 14, and the other supporting unit 15 is synchronously rotated under the action of the linkage mechanism. For example, when the left support unit 15 is rotated counterclockwise in fig. 2, the right support unit 15 is rotated clockwise in synchronization.

As shown in fig. 3, in an embodiment, the linkage mechanism includes two sets of chain transmission mechanisms 16, each set of chain transmission mechanisms 16 includes two chain wheels 161 and a chain 162 wound around the two chain wheels 161, the two connecting rods 152 are respectively connected with one chain wheel 161 of the two sets of chain transmission mechanisms 16, driving wheels 163 are additionally arranged on the other two chain wheels 161 of the two sets of chain transmission mechanisms 16, and the two driving wheels 163 are meshed.

When one connecting rod 152 rotates, the chain wheel 161 connected with the connecting rod 152 synchronously rotates, and then both the chain wheels 161 belonging to the same chain transmission mechanism 16 rotate under the action of the chain 162. Based on the engagement of the two driving wheels 163, when one of the chain transmission mechanisms 16 is operated, the other chain transmission mechanism 16 is synchronously rotated, thereby achieving the folding together of the two supporting units 15.

Further, as shown in fig. 2 and 3, a second sliding groove 141 may be disposed on the seat frame 14 at a position acting on each of the links 121, a guiding direction of the second sliding groove 141 is perpendicular to a lifting direction of the cross link lifting mechanism 12, a sliding pin 123 is disposed at an end of the link 121, and the sliding pin 123 is slidably engaged in the second sliding groove 141.

When the cross link lifting mechanism 12 is lifted, the slide pin 123 slides in the second slide groove 141, the mating member 122 slides in the first slide groove 1111, and the distance between the seat frame 14 and the seat plate 11 changes.

As shown in fig. 8, in still other embodiments of the present application, a combination sideboard 20 is provided, including a sideboard 21 and a foldable seat 10 as described in any one of the above, where the foldable seat 10 is mounted at the bottom of the sideboard 21 in a pull-out manner.

The seat 10 can be unfolded for sitting by people or folded for storage, and is convenient to use, and easy to store and occupies no space. When the combined cabinet 20 is used, the seat 10 can be folded and stored below the cabinet body 21, so that people who trip over the outside can be prevented from being placed the seat 10 for a long time, and the use safety is improved. Specifically, when the seat 11 needs to be unfolded, a lifting force is applied to the seat 11, the two connecting rods 121 of the cross connecting rod lifting mechanism 12 are unfolded in a proper position, and when the connecting rods 121 are unfolded to a certain extent along with the seat 11, the insertion holes 1221 on the matching parts 122 at the top ends of the connecting rods 121 move to positions aligned with the insertion pins 132, and at the moment, the insertion pins 132 are inserted into the insertion holes 1221, so that the connecting rods 121 and the seat 11 are fixed, and the seat 10 is in a unfolded state stably. When the seat 10 needs to be folded and stored, the plug 132 is taken out from the insertion hole 1221, so that the locking between the connecting rod 121 and the seat 11 is released, and the cross-connecting rod lifting mechanism 12 can be folded and the seat 11 can be lowered. The folded seat 10 can be pushed under the cabinet 21.

As shown in fig. 8, in some embodiments, the seat frame 14 is mounted in a drawer-like manner to the bottom wall of the cabinet 21. The seat 10 in the folded state is lowered by the cross link lifting mechanism 12, and the seat plate 11 is arranged adjacent to the seat frame 14. The seat 11 is lowered to a height below the cabinet 21, and the seat 10 can be pushed into the cabinet 21.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (13)

1. A foldable seat, comprising:

the seat is provided with a cross connecting rod lifting mechanism under the seat, the seat is in an unfolding state when the cross connecting rod lifting mechanism is lifted, and the seat is in a folding state when the cross connecting rod lifting mechanism is lowered;

the seat is characterized in that the seat is also provided with a locking device, the locking device comprises a bolt which can slide relative to the seat, the cross connecting rod lifting mechanism comprises two cross hinged connecting rods, the connecting rods are provided with matching pieces, the matching pieces are provided with jacks, when the seat is in an unfolding state, the jacks are aligned with the bolts, and the bolts can be inserted into the jacks.

2. The foldable seat according to claim 1, wherein the two connecting rods of the cross connecting rod lifting mechanism are provided with the matching pieces, each matching piece is provided with the insertion hole, and each matching piece is arranged at the end part of the corresponding connecting rod;

the locking device comprises two bolts, and the bolts are in one-to-one correspondence with the jacks.

3. The foldable seat according to claim 2, wherein the locking device further comprises a trapezoid and a first elastic member, the first elastic member is used for providing a force to the trapezoid, the direction of the force provided by the first elastic member to the trapezoid is consistent with the direction from the lower bottom surface to the upper bottom surface of the trapezoid, and the two bolts are respectively in transmission fit with the two inclined surfaces of the trapezoid, so that the trapezoid can provide the force for the two bolts to be respectively inserted into corresponding insertion holes at the same time.

4. A foldable seat according to claim 3, wherein the insertion directions of the two pins into the corresponding insertion holes are opposite, the inclined surfaces of the trapezoid are oriented to intersect with the insertion directions of the corresponding pins, and the two pins are respectively pressed against the two inclined surfaces of the trapezoid.

5. The foldable seat of claim 4, wherein the locking device further comprises a device housing, the device housing being coupled to the seat, the trapezoid being movably mounted in the device housing such that the trapezoid is slidable back and forth relative to the device housing in the direction of the force of the first elastic member, the first elastic member acting between the device housing and the trapezoid, the latch being slidably mounted on the device housing.

6. The foldable seating apparatus of claim 5, wherein the locking device further comprises a return elastic unit, the return elastic unit comprising two action portions, the two action portions being respectively connected to or abutting against the two pins for providing a force to the corresponding pins in a direction of exiting the insertion holes.

7. The foldable seat according to claim 6, wherein the return elastic unit includes two second elastic members, one ends of the two second elastic members are connected to the device housing, the other ends of the two second elastic members are connected to the two pins, respectively, and the direction of the acting force provided by the second elastic members to the pins is opposite to the direction of insertion of the corresponding pins.

8. The foldable seat according to claim 7, wherein each of the pins includes a sliding portion and an insertion portion connected to each other, the sliding portion being slidably fitted with the device housing, the insertion portion being located outside the device housing, the insertion portion being for insertion into a corresponding insertion hole, a connection protrusion being provided in the device housing, two of the sliding portions being located on both sides of the connection protrusion, respectively, in a sliding direction of the pin with respect to the device housing, each of the second elastic members being connected between the connection protrusion and the corresponding sliding portion;

the connecting protrusion and the second elastic piece are both positioned on one side of the trapezoid piece, each bolt further comprises an abutting part, the abutting parts are connected with the sliding parts, and the abutting parts are partially suspended outside the sliding parts and abutted to the inclined planes.

9. A foldable seat according to any one of claims 1 to 8, wherein the mating member is of cylindrical configuration, the insertion direction of the socket is perpendicular to the axial direction of the mating member, and the axial direction of the mating member is perpendicular to the plane of movement defined by the rotation of the two links.

10. A foldable seat according to any one of claims 1 to 8, further comprising two sets of support units, each set of support units comprising two support legs and a connecting rod connecting the two support legs;

the foldable seat also comprises a seat frame, the cross connecting rod lifting mechanism is assembled between the seat plate and the seat frame, so that the seat plate can lift relative to the seat frame, two groups of supporting units are arranged on the seat frame, four supporting leg parts are arranged at four corners of a rectangle, and two connecting rods penetrate through the seat frame and can rotate relative to the seat frame;

the seat frame is provided with a linkage mechanism, and the linkage mechanism is connected between the two connecting rods so that the two connecting rods can rotate in opposite directions at the same time.

11. The foldable seat according to claim 10, wherein the linkage mechanism comprises two sets of chain transmission mechanisms, each set of chain transmission mechanism comprises two chain wheels and a chain wound on the two chain wheels, the two connecting rods are respectively connected with one chain wheel in the two sets of chain transmission mechanisms, driving wheels are additionally arranged on the other two chain wheels in the two sets of chain transmission mechanisms, and the two driving wheels are meshed.

12. The foldable seat according to claim 10, wherein guide members are arranged at positions on the seat plate corresponding to the cross connecting rod lifting mechanisms, the guide members are provided with first sliding grooves, the guide directions of the first sliding grooves are perpendicular to the lifting directions of the cross connecting rod lifting mechanisms, the matching members are in sliding fit in the first sliding grooves, the locking devices are arranged on the guide members, and the matching members are positioned on extension lines of the bolts;

the seat frame is provided with a first sliding groove at the action position of each connecting rod, the guiding direction of the first sliding groove is vertical to the lifting direction of the cross connecting rod lifting mechanism, the end part of each connecting rod is provided with a sliding pin, and the sliding pins are in sliding fit in the first sliding grooves;

the foldable seat comprises two crossed connecting rod lifting mechanisms which are arranged at two ends of the seat at intervals;

the seat plate is provided with two locking devices, and the two locking devices correspond to the two crossed connecting rod lifting mechanisms one by one.

13. A combination sideboard comprising a sideboard and a foldable seat according to any one of claims 1 to 12, said foldable seat being mounted in a pull-out manner on the bottom of said sideboard.