CN217039396U - Supporting leg and furniture - Google Patents

Abstract

The embodiment of the application discloses a supporting leg and furniture, the supporting leg comprises a top rod, an outer sleeve, a connecting seat, a rolling seat and a rolling body, wherein the outer sleeve is movably sleeved on the periphery of the top rod, a gap is formed between the inner wall surface of the outer sleeve and the outer peripheral surface of the top rod, and an internal thread is arranged on the inner wall surface of the upper end of the outer sleeve; the connecting seat comprises a fixed insert fixedly connected with the upper end of the ejector rod, the peripheral surface of the fixed insert is provided with an adjusting thread matched with the internal thread of the inner wall surface of the upper end of the outer sleeve, and the axial size of the adjusting thread is larger than or equal to the preset adjusting stroke; the rolling seat is fixedly arranged at the lower end of the ejector rod, and a concave cavity which is opened downwards is arranged on the rolling seat; the rolling body is movably arranged in the concave cavity and protrudes out of the outer surface of the rolling seat; when the outer sleeve moves downwards relative to the ejector rod to be in contact with a preset supporting surface, the lower end of the outer sleeve is sleeved on the periphery of the rolling seat. This supporting legs quantity is economized, and outer sleeve design space is big, and threaded connection intensity is higher.

Description

Supporting leg and furniture

Technical Field

The application relates to the technical field of furniture, in particular to a supporting leg and furniture.

Background

In order to facilitate the furniture to be switched between convenient movement and stable placement, the prior art provides a support leg capable of switching a support state, when the furniture needs to be moved, an outer sleeve of the support leg can enable the relative rolling body to rotate upwards so as to enable the rolling body to be exposed and supported, so that the furniture borne by the support leg can be conveniently moved; when the furniture needs to be stably placed, the outer sleeve can also rotate downwards relative to the rolling body to hide the rolling body and be contacted with an external supporting surface alone or together with the rolling body so as to stably support the furniture. However, the existing supporting leg with the structure is characterized in that the ejector rod embedded in the outer sleeve in threaded connection is arranged in an equal diameter mode with the mounting seat for mounting the rolling body, and the ejector rod is basically matched with the inner cavity of the outer sleeve in size, so that the outer diameter of the ejector rod is relatively large, and the ejector rod is generally made of metal materials in order to ensure the strength of threaded connection between the ejector rod and the outer sleeve, so that on one hand, the whole supporting leg is relatively heavy, multiple materials are used, and the cost is high; on the other hand, the outer sleeve is required to be matched with the shape of the ejector rod, and the size of the whole outer sleeve is inconvenient to adjust, so that the appearance of different furniture is not matched conveniently.

SUMMERY OF THE UTILITY MODEL

The main purpose of this application is to provide a supporting legs, aims at solving current supporting legs structure and retrencies inadequately and the little technical problem of adaptation space between outer sleeve and the ejector pin.

In order to achieve the purpose, the supporting leg provided by the application comprises a top rod, an outer sleeve, a connecting seat, a rolling seat and a rolling body, wherein,

the ejector rod extends along the vertical direction;

the outer sleeve is movably sleeved on the periphery of the ejector rod, a gap is formed between the inner wall surface of the outer sleeve and the outer peripheral surface of the ejector rod, and an internal thread is arranged on the inner wall surface of the upper end of the outer sleeve;

the connecting seat comprises a fixed insert fixedly connected with the upper end of the ejector rod, the outer peripheral surface of the fixed insert is provided with an adjusting thread matched with the internal thread of the inner wall surface of the upper end of the outer sleeve, and the axial size of the adjusting thread is larger than or equal to a preset adjusting stroke;

the rolling seat is fixedly arranged at the lower end of the ejector rod, and a concave cavity which is opened downwards is arranged on the rolling seat; the rolling body is movably arranged in the concave cavity and protrudes out of the outer surface of the rolling seat;

when the outer sleeve moves downwards relative to the ejector rod to be in contact with a preset supporting surface, the lower end of the outer sleeve is sleeved on the periphery of the rolling seat.

Preferably, the fixed insert comprises an outer shaft sleeve, the upper end of the ejector rod is fixedly arranged in an inner cavity of the outer shaft sleeve, and the adjusting thread is formed on the outer peripheral surface of the outer shaft sleeve.

Preferably, the fixed insert further comprises an inner shaft sleeve and a connecting rib plate, the inner shaft sleeve is arranged in the inner cavity of the outer shaft sleeve, the connecting rib plate is transversely connected with the inner shaft sleeve and the outer shaft sleeve, and the upper end of the ejector rod is arranged in the inner cavity of the inner shaft sleeve and is fixedly connected with the inner wall surface of the inner shaft sleeve.

Preferably, the upper end of the ejector rod is provided with an external thread, the inner wall surface of the inner shaft sleeve is provided with an internal thread, and the upper end of the ejector rod is in threaded connection with the inner shaft sleeve.

Preferably, the supporting leg further comprises an upper fastening part, wherein an internal thread hole is formed in the upper fastening part, the upper fastening part is in threaded connection with the upper end of the ejector rod, and the upper fastening part is abutted against the lower end face of the inner shaft sleeve.

Preferably, the inner wall surface of the inner shaft sleeve is provided with internal threads, the connecting seat further comprises a connecting plate and an outer fastener, the fixed insert is fixedly arranged on the lower surface of the connecting plate, the connecting plate is provided with a connecting hole corresponding to the inner cavity of the inner shaft sleeve, and the outer fastener penetrates through the connecting hole to be in threaded connection with the inner shaft sleeve.

Preferably, the connecting seat further comprises a connecting plate, and the fixing insert is fixedly arranged on the lower surface of the connecting plate.

Preferably, the lower end of the ejector rod is provided with a stop lug, the stop lug transversely protrudes out of the outer peripheral surface of the ejector rod, the outer peripheral surface of the stop lug comprises at least one stop surface, and the stop surface extends along the vertical direction and the direction vertical to the axis of the ejector rod;

the rolling seat comprises a seat body and a cover body fixedly arranged at the lower end of the seat body, the cover body and the seat body enclose to form the concave cavity, and the rolling body is movably clamped between the cover body and the seat body; the seat body is fixed with the lower end of the ejector rod and the stop lug in a welding mode.

Preferably, the inner wall surface of the outer shaft sleeve is provided with at least two convex parts, the convex parts extend along the vertical direction, and the lower end surfaces of the convex parts are provided with first fixing holes; the fixed insert further comprises a switching block and at least two inner fasteners, the switching block is transversely arranged and is abutted against the lower end faces of the plurality of bosses, the switching block is provided with a first through hole corresponding to the first fixing hole, and a second fixing hole corresponding to the upper end of the ejector rod; the inner fastening piece penetrates through the first via hole and then is fixedly connected with the first fixing hole, and the upper end of the ejector rod is fixedly connected with the second fixing hole.

Preferably, the inner wall surfaces of the first fixing hole and the second fixing hole are provided with internal threads, the internal fastener is in threaded connection with the first fixing hole, the upper end of the ejector rod is in threaded connection with the second fixing hole, and the axial size of the external threads at the upper end of the ejector rod is larger than that of the internal threads of the second fixing hole.

Preferably, the supporting leg further comprises an upper fastening piece, an internal thread hole is formed in the upper fastening piece, the upper fastening piece is in threaded connection with the upper end of the ejector rod, and the upper fastening piece is abutted to the lower end face of the adapter block.

Preferably, the first fixing hole is through-shaped along the vertical direction; the medial surface of bellying is equipped with the strip groove that extends and link up along upper and lower direction, the strip groove still transversely link up first fixed orifices.

Preferably, two of the convex parts are arranged, the transfer block is strip-shaped, and two ends of the transfer block are respectively abutted against the lower end faces of the convex parts; the two end faces of the transfer block are radially and inwardly deviated from the outer peripheral face of the fixed insert, and the first through hole is open at the position adjacent to the end face of the transfer block.

Preferably, the first fixing hole is through-shaped along the vertical direction; the connecting seat further comprises a connecting plate and an outer fastener, the fixed insert is fixedly arranged on the lower surface of the connecting plate, the connecting plate is provided with a second through hole corresponding to the first fixing hole, and the outer fastener penetrates through the second through hole to be in threaded connection with the first fixing hole.

Preferably, the outer peripheral surface of the lower end of the ejector rod is provided with an external thread;

the rolling seat comprises a seat body and a cover body fixedly arranged at the lower end of the seat body, the cover body and the seat body enclose to form the concave cavity, and the rolling body is movably clamped between the cover body and the seat body; the upper end face of the seat body is provided with a third fixing hole; the lower end of the ejector rod is in threaded connection with the third fixing hole.

Preferably, the supporting legs further comprise a lower fastening piece, an internal threaded hole is formed in the lower fastening piece, the lower end of the ejector rod is respectively in threaded connection with the lower fastening piece and the seat body, and the lower fastening piece is abutted to the upper surface of the seat body.

The utility model also provides a furniture, including furniture body and a plurality of as above the supporting legs, it is a plurality of the supporting legs the ejector pin is relative the furniture body is fixed to be set up.

In the supporting leg of the utility model, the outer sleeve is connected with the fixed insert which is fixed on the upper end of the ejector rod through screw threads so as to realize the up-and-down movement, thus the outer diameter of the ejector rod with larger axial dimension can be made smaller, thereby the using amount of parts of the supporting leg is less, and the structure is more portable; the inner diameter of the outer sleeve is not required to be related to that of the ejector rod, so that the outer diameter of the outer sleeve can be changed in various ways, and the appearance of different furniture is better adapted; thirdly, as the axial size of the adjusting thread on the fixed insert is larger than or equal to the preset adjusting stroke, the matching length of the thread between the fixed insert and the outer sleeve is always larger than or equal to the preset adjusting stroke, and the supporting strength of the threaded connection between the fixed insert and the outer sleeve is increased.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 shows a schematic perspective view of a first embodiment of the support leg of the present invention;

FIG. 2 is a cross-sectional structural elevation view of the support foot of FIG. 1;

FIG. 3 is an exploded view of the leg of FIG. 1;

FIG. 4 is an enlarged perspective view of the mounting insert of FIG. 3;

fig. 5 shows a schematic perspective view of a second embodiment of the support leg of the present invention;

FIG. 6 is a cross-sectional structural elevational view of the support foot of FIG. 5;

fig. 7 is an exploded view of the leg of fig. 5;

fig. 8 is an enlarged perspective view of the fixing insert of fig. 7.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

Referring to fig. 1 to 4 and 5 to 8, the present application proposes a support foot 100A, 100B including a top bar 10A, 10B, an outer sleeve 20, a connecting seat 30A, 30B, a rolling seat 50A, 50B and a rolling body 60, wherein,

the push rods 10a, 10b extend in the up-down direction;

the outer sleeve 20 is movably sleeved on the peripheries of the ejector rods 10a and 10b, a gap is formed between the inner wall surface of the outer sleeve 20 and the outer peripheral surfaces of the ejector rods 10a and 10b, and an internal thread is arranged on the inner wall surface of the upper end of the outer sleeve 20;

the connecting seats 30a and 30b comprise fixing inserts 31a and 31b fixedly connected with the upper ends of the push rods 10a and 10b, the outer peripheral surfaces of the fixing inserts 31a and 31b are provided with adjusting threads 32a and 32b matched with the internal threads of the inner wall surface of the upper end of the outer sleeve 20, and the axial sizes of the adjusting threads 32a and 32b are larger than or equal to the preset adjusting stroke;

the rolling seats 50a and 50b are fixedly arranged at the lower ends of the push rods 10a and 10b, and concave cavities which are opened downwards are formed in the rolling seats 50a and 50 b; the rolling bodies 60 are movably arranged in the concave cavities and protrude out of the outer surfaces of the rolling seats 50a and 50 b;

when the outer sleeve 20 moves downward relative to the push rods 10a and 10b to contact with a preset supporting surface, the lower end of the outer sleeve 20 is sleeved on the periphery of the rolling seats 50a and 50 b.

In this embodiment, the outer sleeve 20 is bridged by the fixing inserts 31a, 31b, and the supporting force can be transmitted to the carrier rods 10a, 10b through the fixing inserts 31a, 31 b. In the stable supporting state, if the rolling element 60 is suspended from the external supporting surface, the outer sleeve 20 is used to support the furniture alone. Preferably, however, to enlarge the support area and reduce stress concentrations, the outer sleeve 20 is normally in contact with an external support surface (e.g., the ground) along with the rolling bodies 60 to cooperatively support the furniture. In the stably supported state, the rolling elements 60 are hard to roll due to the frictional force between the outer sleeve 20 and the external support surface, thereby forming a stably supported state. When the furniture needs to be moved, the outer sleeve 20 is only required to be rotated, the outer sleeve 20 drives the supporting plate to spirally ascend relative to the ejector rods 10a and 10b, the outer sleeve 20 is separated from the ground, and the rolling body 60 can roll relative to the ground due to the fact that friction stopping is relieved, and therefore the furniture is moved.

The outer sleeve 20 may be a single component or may be assembled from multiple components. For example, the main structure is a seamless steel pipe, and a flexible member for buffering and increasing friction is sleeved at the lower end of the main structure. The rolling seats 50a and 50b are used for mounting the rolling elements 60 so that the rolling elements 60 can roll smoothly and fall off. The rolling elements 60 may have a spherical shape, a columnar shape, or the like suitable for rolling.

In the supporting legs 100A and 100B of the present invention, the outer sleeve 20 is screwed with the fixing inserts 31a and 31B fixed on the upper ends of the top rods 10A and 10B to move up and down, so the outer diameters of the top rods 10A and 10B with larger axial dimensions can be made smaller, and the supporting legs 100A and 100B have less component consumption and lighter structure; and the inner diameter of the outer sleeve 20 does not need to be related to the inner diameter of the push rods 10a and 10b, therefore, the outer diameter of the outer sleeve 20 can be changed in various ways, so that the outer sleeve can be better adapted to the appearances of different furniture; thirdly, since the axial dimension of the adjusting threads 32a, 32b on the fixing inserts 31a, 31b is greater than or equal to the preset adjusting stroke, the length of the thread fit between the fixing inserts 31a, 31b and the outer sleeve 20 is always greater than or equal to the preset adjusting stroke, thereby increasing the supporting strength of the threaded connection therebetween.

Further, the fixing inserts 31a, 31b include outer sleeves 33a, 33b, the upper ends of the push rods 10a, 10b are fixedly arranged in the inner cavities of the outer sleeves 33a, 33b, and the adjusting threads 32a, 32b are formed on the outer peripheral surfaces of the outer sleeves 33a, 33 b.

In this embodiment, the fixing inserts 31a, 31b are provided in a relatively hollow structure, which is suitable for engagement with the inner cavity of the outer sleeve 20 and is advantageous for weight reduction. The upper ends of the lift pins 10a, 10b may be directly or indirectly fixedly connected to the outer sleeves 33a, 33b, for example, the upper ends of the lift pins 10a, 10b are bent and then fixedly connected to the inner wall surfaces of the outer sleeves 33a, 33 b.

Further, referring to fig. 1 to 4, in the first embodiment of the present application, the fixing insert 31a further includes an inner sleeve 35 and a connecting rib 36, the inner sleeve 35 is disposed in the inner cavity of the outer sleeve 33a, the connecting rib 36 transversely connects the inner sleeve 35 and the outer sleeve 33a, and the upper end of the rod 10a is disposed in the inner cavity of the inner sleeve 35 and fixedly connected to the inner wall surface of the inner sleeve 35.

In this embodiment, the inner shaft sleeve 35 is arranged, so that the ejector rod 10a only needs to keep the original straight rod shape and fixedly insert into the inner cavity of the inner shaft sleeve 35. The top rod 10a and the inner shaft sleeve 35 can be in interference fit or in threaded connection or welded connection. The connection rib 36 is used to maintain the position of the inner hub 35, and in order to ensure the connection strength, the connection rib 36 is generally provided in plural and is symmetrical with respect to the axis of the outer hub 33a or the inner hub 35, and specifically, in the first embodiment, the connection rib 36 is provided in two and is on the same diameter.

Further, in order to facilitate mounting and dismounting, an external thread is provided at the upper end of the push rod 10a, an internal thread is provided on the inner wall surface of the inner shaft sleeve 35, and the upper end of the push rod 10a is in threaded connection with the inner shaft sleeve 35.

Further, in order to prevent the carrier rod 10A and the fixing insert 31a from being released, the support foot 100A further includes an upper fastener 70, the upper fastener 70 is formed with an internal threaded hole, the upper fastener 70 is screwed to the upper end of the carrier rod 10A, and the upper fastener 70 abuts against the lower end surface of the inner boss 35. The fixing insert 31a and the upper fastening member 70 are both matched with the same external thread at the upper end of the top rod 10a, so that the processing of the external thread at the upper end of the top rod 10a is facilitated.

Furthermore, the inner wall surface of the inner shaft sleeve 35 is provided with an internal thread, the connecting seat 30a further comprises a connecting plate 39a and an external fastening piece 41, the fixing insert 31a is fixedly arranged on the lower surface of the connecting plate 39a, the connecting plate 39a is provided with a connecting hole 40 corresponding to the inner cavity of the inner shaft sleeve 35, and the external fastening piece 41 penetrates through the connecting hole 40 to be in threaded connection with the inner shaft sleeve 35.

In this embodiment, the support area can be increased and the stress concentration can be reduced by providing the connection plate 39 a. Outer fastener 41 and ejector pin 10a upper end all with the same interior screw-thread fit of interior axle sleeve 35 internal face, so, only need process a screw thread at the internal face of interior axle sleeve 35, so, reduced the processing cost.

Further, referring to the first and second embodiments of fig. 1 to 8, in order to increase the supporting area with the furniture body and reduce the stress concentration, the connecting seats 30a, 30b further include connecting plates 39a, 39b, and the fixing inserts 31a, 31b are fixedly disposed on the lower surfaces of the connecting plates 39a, 39 b.

Further, referring again to the first embodiment of fig. 1 to 4, the lower end of the top rod 10a is provided with a stop protrusion 11, the stop protrusion 11 protrudes transversely from the outer circumferential surface of the top rod 10a, the outer circumferential surface of the stop protrusion 11 includes at least one stop surface 111, and the stop surface 111 extends along the vertical direction and the direction perpendicular to the axis of the top rod 10 a;

the rolling seat 50a includes a seat body 51a and a cover body 52 fixedly disposed at the lower end of the seat body 51a, the cover body 52 and the seat body 51a enclose to form a cavity, and the rolling element 60 is movably clamped between the cover body 52 and the seat body 51 a; the seat body 51a is welded and fixed with the lower end of the top rod 10a and the stop lug 11.

In this embodiment, the seat body 51a and the locking boss are welded and fixed, for example, the seat body 51a is made of plastic, the push rod 10a and the locking boss 11 are integrated and made of metal, and the seat body 51a can be injection molded at the lower end of the push rod 10a and the periphery of the locking boss 11 by using a metal insert, so that the seat body 51a is easy to loosen in the axial direction of the push rod 10a and is also not easy to rotate around the axial line of the push rod 10a, thereby ensuring that the rolling element 60 can smoothly roll.

Further, referring to the second embodiment of fig. 5 to 8, the inner wall surface of the outer sleeve 33b is provided with at least two bosses 34, the bosses 34 extend in the up-down direction, and the lower end surfaces of the bosses 34 are provided with first fixing holes 341; the fixing insert 31b further comprises a transfer block 37 and at least two inner fasteners 38, the transfer block 37 is transversely arranged and abuts against the lower end surfaces of the plurality of bosses 34, the transfer block 37 is provided with a first through hole 371 corresponding to the first fixing hole 341, and a second fixing hole 372 corresponding to the upper end of the ejector rod 10 b; the inner fastening member 38 passes through the first via hole 371 and then is fixedly connected to the first fixing hole 341, and the upper end of the plunger 10b is fixedly connected to the second fixing hole 372.

In this embodiment, the first fixing hole 341 with a sufficient size may be opened by providing the protrusion 34 to locally increase the wall thickness under the condition that the wall thickness of the outer sleeve 33b is ensured to be small. The boss 34 extends in the up-down direction so that the integral structure of the boss 34 and the outer hub 33b can be adapted to extrusion molding, in other words, the raw material of the integral structure of the boss 34 and the outer hub 33b can be taken out from the extruded long bar-shaped section. The provision of the adapter 37 facilitates the simplification of the internal structure of the outer sleeve 33b and facilitates the fixing of the carrier rod 10 b. The fixing between the internal fastening member 38 and the first fixing hole 341, and the fixing between the top rod 10b and the second fixing hole 372 may be interference fit, threaded connection, welding, bonding, or the like.

Further, the inner wall surfaces of the first fixing hole 341 and the second fixing hole 372 are provided with internal threads, the internal fastening piece 38 is in threaded connection with the first fixing hole 341, the upper end of the ejector rod 10b is in threaded connection with the second fixing hole 372, and the axial size of the external thread at the upper end of the ejector rod 10b is larger than the axial size of the internal thread of the second fixing hole 372.

In this embodiment, the detachable connection can be better realized by the threaded connection. In addition, because the external thread at the upper end of the mandril 10B is longer, the final supporting height of the supporting foot 100B can be adjusted by adjusting the length of the upper end of the mandril 10B extending into the inner cavity of the outer shaft sleeve 33B.

Further, in order to prevent the lift pin 10B from being released from the adapter block 37, the support leg 100B further includes an upper fastening member 70, the upper fastening member 70 is formed with an internal threaded hole, the upper fastening member 70 is screwed to the upper end of the lift pin 10B, and the upper fastening member 70 abuts against the lower end surface of the adapter block 37.

Further, the integral structure of the boss 34 and the outer sleeve 33b may be suitable for extrusion molding before the internal thread is processed, and the first fixing hole 341 is through in the up-down direction; the inner side surface of the protruding portion 34 is provided with a through groove 342 extending in the vertical direction, and the groove 342 further extends through the first fixing hole 341 in the lateral direction.

Further, in order to make the structure more compact on the premise of ensuring that the first fixing hole 341 has a sufficient size, two protrusions 34 are provided, the adapting block 37 is strip-shaped, and two ends of the adapting block 37 respectively abut against the lower end surface of the protrusion 34; both end faces of the relay block 37 are radially inwardly offset from the outer peripheral surface of the fixed insert 31b, and the first via 371 is open at the end face of the adjacent relay block 37. Thus, the two ends of the adapter block 37 do not interfere with the rotation of the outer sleeve 20.

Further, the first fixing hole 341 is through in the vertical direction; the connecting seat 30b further includes a connecting plate 39b and an external fastening member 41, the fixing insert 31b is fixedly disposed on the lower surface of the connecting plate 39b, the connecting plate 39b is provided with a second through hole 42 corresponding to the first fixing hole 341, and the external fastening member 41 penetrates through the second through hole 42 to be in threaded connection with the first fixing hole 341.

In this embodiment, the supporting area between the leg 100B and the furniture body can be supported by the connecting plate 39B, and stress concentration can be reduced. The outer fastening member 41 and the inner fastening member 38 are connected with the same internal thread as the first fixing hole 341, so that the specification of the internal thread of the first fixing hole 341 is reduced, and the processing cost is reduced.

Further, the outer peripheral surface of the lower end of the ejector rod 10b is provided with an external thread;

the rolling seat 50b includes a seat body 51b and a cover body 52 fixedly disposed at the lower end of the seat body 51b, the cover body 52 and the seat body 51b enclose to form a cavity, and the rolling element 60 is movably clamped between the cover body 52 and the seat body 51 b; the upper end surface of the seat body 51b is provided with a third fixing hole 53; the lower end of the top rod 10b is in threaded connection with the third fixing hole 53.

In this embodiment, the rolling seat 50b is provided as a seat body 51b and a cover body 52 which are separate bodies, so that the rolling elements 60 can be more easily mounted to the cavity. The rolling seat 50b is detachably connected with the ejector rod 10b, so that the rolling seat 50b and the ejector rod 10b can be conveniently processed, and the processing cost is further reduced; the rolling seat 50b is also easily replaced in daily maintenance.

Further, in order to prevent the top rod 10B from being released from the seat 51B, the supporting leg 100B further includes a lower fastening member 80, the lower fastening member 80 is formed with an internal threaded hole, the lower end of the top rod 10B is respectively in threaded connection with the lower fastening member 80 and the seat 51B, and the lower fastening member 80 abuts against the upper surface of the seat 51B.

The utility model also provides a furniture, including furniture body and a plurality of supporting legs 100A, 100B, a plurality of supporting legs 100A, 100B's ejector pin 10A, the fixed setting of furniture body relatively of 10B. The specific structure of the supporting legs 100A, 100B refers to the above embodiments, and since the furniture adopts all the technical solutions of all the above embodiments, all the beneficial effects brought by the technical solutions of the above embodiments are also achieved, and no further description is given here.

Further, referring to fig. 1 to 8, in the first and second embodiments of the present application, the lower end surfaces of the seat bodies 51a, 51b are provided with ball grooves 54; the connection part of the outer peripheral surfaces of the seat bodies 51a and 51b and the lower end surfaces of the seat bodies 51a and 51b is provided with an annular step-shaped concave part 55;

the cover 52 comprises a bottom wall 56 and a side wall 58 extending upwards from the outer edge of the bottom wall 56, the bottom wall 56 is provided with a ball hole 57 corresponding to the ball groove 54, the side wall 58 is fixedly embedded in the stepped recess 55, and the outer peripheral surface of the side wall 58 is flush with the outer peripheral surfaces of the seat bodies 51a and 51 b;

the rolling bodies 60 are spherical; the inner wall surface of the ball groove 54 has a first concave arc surface 541, the inner wall surface of the ball hole 57 has a second concave arc surface 542, and the rolling element 60 is rollably interposed between the first concave arc surface 541 and the second concave arc surface 542.

In this embodiment, the sidewall 58 is flush with the outer surface of the ball seat to prevent the sidewall 58 from interfering with the vertical extension and retraction of the outer sleeve 20. The spherical rolling bodies 60 can realize movement in any horizontal direction, so that the furniture can be moved more conveniently. In particular, in order to make the rolling bodies 60 roll better. The supporting legs 100A, 100B further include a plurality of balls rollably embedded between the rolling element 60 and the first concave arc surface 541.

Furthermore, the support legs 100A and 100B further include a ring-shaped flexible plug 90, an annular outer caulking groove 91 is formed at a joint between the outer peripheral surface of the flexible plug 90 and the upper end surface of the flexible plug 90, and the lower end of the outer sleeve 20 is fixedly embedded in the outer caulking groove 91;

when the flexible plug 90 moves downwards along with the outer sleeve 20 relative to the top rods 10a and 10b to contact with a preset supporting surface, the lower end of the outer sleeve 20 and the flexible plug 90 are sleeved on the peripheries of the rolling seats 50a and 50b, and a gap is formed between the inner circumferential surface of the flexible plug 90 and the outer circumferential surfaces of the rolling seats 50a and 50 b.

In this embodiment, the flexible plug 90 can increase the friction force when contacting the ground, thereby achieving better stopping effect. In addition, the provision of flexible plug 90 prevents rigid outer sleeve 20 from scratching the ground.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims (15)

1. The supporting leg is characterized by comprising a mandril, an outer sleeve, a connecting seat, a rolling seat and a rolling body, wherein,

the ejector rod extends along the vertical direction;

the outer sleeve is movably sleeved on the periphery of the ejector rod, a gap is formed between the inner wall surface of the outer sleeve and the outer peripheral surface of the ejector rod, and an internal thread is arranged on the inner wall surface of the upper end of the outer sleeve;

the connecting seat comprises a fixed insert fixedly connected with the upper end of the ejector rod, the peripheral surface of the fixed insert is provided with an adjusting thread matched with the internal thread of the inner wall surface of the upper end of the outer sleeve, and the axial size of the adjusting thread is larger than or equal to the preset adjusting stroke;

the rolling seat is fixedly arranged at the lower end of the ejector rod, and a concave cavity which is opened downwards is arranged on the rolling seat; the rolling body is movably arranged in the concave cavity and protrudes out of the outer surface of the rolling seat;

when the outer sleeve moves downwards relative to the ejector rod to be in contact with a preset supporting surface, the lower end of the outer sleeve is sleeved on the periphery of the rolling seat.

2. The supporting foot as claimed in claim 1, wherein the fixing insert includes an outer bushing, the upper end of the push rod is fixedly disposed in an inner cavity of the outer bushing, and the adjusting screw is formed on an outer circumferential surface of the outer bushing.

3. The supporting foot according to claim 2, wherein the fixing insert further comprises an inner shaft sleeve and a connecting rib plate, the inner shaft sleeve is arranged in the inner cavity of the outer shaft sleeve, the connecting rib plate is transversely connected with the inner shaft sleeve and the outer shaft sleeve, and the upper end of the ejector rod is arranged in the inner cavity of the inner shaft sleeve and is fixedly connected with the inner wall surface of the inner shaft sleeve.

4. The support foot of claim 3, wherein the upper end of the top bar is provided with external threads, the inner wall surface of the inner shaft sleeve is provided with internal threads, and the upper end of the top bar is in threaded connection with the inner shaft sleeve.

5. The support foot according to claim 4, further comprising an upper fastening member formed with an internally threaded hole, the upper fastening member being threadedly coupled to an upper end of the carrier rod and abutting against a lower end surface of the inner collar.

6. The supporting foot according to claim 3 or 4, wherein the inner wall surface of the inner shaft sleeve is provided with internal threads, the connecting seat further comprises a connecting plate and an outer fastening piece, the fixing insert is fixedly arranged on the lower surface of the connecting plate, the connecting plate is provided with a connecting hole corresponding to the inner cavity of the inner shaft sleeve, and the outer fastening piece penetrates through the connecting hole to be in threaded connection with the inner shaft sleeve.

7. A support foot according to any one of claims 1-5,

the lower end of the ejector rod is provided with a stop lug, the stop lug transversely protrudes out of the peripheral surface of the ejector rod, the peripheral surface of the stop lug comprises at least one stop surface, and the stop surface extends along the vertical direction and the direction vertical to the axis of the ejector rod;

the rolling seat comprises a seat body and a cover body fixedly arranged at the lower end of the seat body, the cover body and the seat body enclose to form the concave cavity, and the rolling body is movably clamped between the cover body and the seat body; the seat body is fixed with the lower end of the ejector rod and the stop lug in a welding mode.

8. The support foot according to claim 2, wherein the inner wall surface of the outer sleeve is provided with at least two bosses extending in the up-down direction, and lower end surfaces of the bosses are provided with first fixing holes; the fixed insert further comprises a switching block and at least two inner fasteners, the switching block is transversely arranged and is abutted against the lower end faces of the plurality of bosses, the switching block is provided with a first through hole corresponding to the first fixing hole, and a second fixing hole corresponding to the upper end of the ejector rod; the inner fastening piece penetrates through the first via hole and then is fixedly connected with the first fixing hole, and the upper end of the ejector rod is fixedly connected with the second fixing hole.

9. The support foot of claim 8, wherein inner threads are formed on inner wall surfaces of the first fixing hole and the second fixing hole, the inner fastening piece is in threaded connection with the first fixing hole, the upper end of the ejector rod is in threaded connection with the second fixing hole, and the axial dimension of the outer thread on the upper end of the ejector rod is larger than that of the inner thread of the second fixing hole.

10. A support foot according to claim 9, further comprising an upper fastener, the upper fastener being formed with an internally threaded bore, the upper fastener being threadedly connected to the upper end of the carrier rod and the upper fastener abutting the lower end surface of the adapter block.

11. A support foot according to claim 8 or 9, wherein the first fixing hole is through-shaped in the vertical direction; the medial surface of bellying is equipped with the strip groove that extends and link up along upper and lower direction, the strip groove still transversely link up first fixed orifices.

12. The supporting foot according to claim 8, wherein two of the convex parts are arranged, the transfer block is in a strip shape, and two ends of the transfer block are respectively abutted against the lower end surfaces of the convex parts; two end faces of the transfer block are radially and inwardly deviated from the outer peripheral face of the fixing insert, and the first through hole is open at the position of the end face of the adjacent transfer block.

13. The support foot according to claim 8, wherein the first fixing hole is formed to penetrate in an up-down direction; the connecting seat further comprises a connecting plate and an outer fastener, the fixed insert is fixedly arranged on the lower surface of the connecting plate, the connecting plate is provided with a second through hole corresponding to the first fixing hole, and the outer fastener penetrates through the second through hole to be in threaded connection with the first fixing hole.

14. A support foot according to any one of claims 8, 9 and 13,

the outer peripheral surface of the lower end of the ejector rod is provided with an external thread;

the rolling seat comprises a seat body and a cover body fixedly arranged at the lower end of the seat body, the cover body and the seat body enclose to form the concave cavity, and the rolling body is movably clamped between the cover body and the seat body; the upper end surface of the seat body is provided with a third fixing hole; the lower end of the ejector rod is in threaded connection with the third fixing hole;

the supporting leg further comprises a lower fastening piece, an internal threaded hole is formed in the lower fastening piece, the lower end of the ejector rod is in threaded connection with the lower fastening piece and the seat body respectively, and the lower fastening piece is abutted to the upper surface of the seat body.

15. A piece of furniture, comprising a furniture body and a plurality of support feet as claimed in any one of claims 1 to 14, wherein the legs of the plurality of support feet are fixedly arranged relative to the furniture body.

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