Chair leg of seat and seat

Abstract

The utility model discloses a chair leg of a chair and the chair. The chair leg of the chair comprises a connecting seat, a plurality of supporting arms and a plurality of connecting bolts, the connecting base comprises an upper end face, a lower end face, an outer edge face and a plurality of connecting bosses, a clamping groove is formed in each connecting boss, a positioning column protruding upwards is arranged on the bottom face of each clamping groove, and a connecting hole is formed in each positioning column; the inner side ends of the supporting arms are provided with protruding blocks, the protruding blocks are provided with positioning grooves which are sunken upwards from the lower surfaces of the protruding blocks, the top faces of the positioning grooves are provided with threaded holes extending upwards, the supporting arms correspond to the connecting bosses one to one, and the protruding blocks on the supporting arms are arranged in the clamping grooves of the connecting bosses so that the positioning columns in the clamping grooves can be embedded in the positioning grooves. The multiple connecting bolts penetrate through the connecting holes from the lower portions of the multiple connecting holes in a one-to-one correspondence mode and then are connected into the threaded holes located above the connecting holes in a screwed mode. The manufacturing cost and the transportation cost of the seat leg are reduced, and the bearing requirement of the seat is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of seat, concretely relates to a chair leg of seat and seat. BACKGROUND

[0002] The chair leg is an important component of the seat, and is used for supporting the whole seat. In order to realize the lifting of the seat, the lifting air pressure rod is usually installed between the cushion and the chair leg of some office seats and learning seats. Therefore, the chair leg usually comprises a connecting seat located in the middle and a plurality of supporting arms extending outward from the connecting seat. In the chair leg of the existing seat, the supporting arms are integrally formed with the connecting seat. Since the length of the supporting arms is large, the space occupied by the chair leg is large, the mold cost required for manufacturing the chair leg is large, the manufacturing cost is high, and the large external size makes the wrapping volume of the chair leg large, and the transportation cost of the seat is high. SUMMARY

[0003] The utility model aims at providing a chair leg of seat and seat to solve the problems of high manufacturing cost and high transportation cost of the chair leg of the prior art.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] The chair leg of the seat comprises a connecting seat, a plurality of supporting arms and a plurality of connecting bolts.

[0006] The connecting seat comprises an upper end face, a lower end face opposite to the upper end face, an outer edge face connected between the upper end face and the lower end face, a plurality of connecting bosses protruding outward from the outer edge face, a clamping groove recessed downward from the upper surface of the connecting boss, a positioning column protruding upward on the bottom surface of the clamping groove, and a connecting hole extending from the top surface of the positioning column to the bottom surface of the connecting boss.

[0007] The inner side end of the supporting arm is provided with a protrusion, the protrusion is provided with a positioning groove recessed upward from the lower surface of the protrusion, the top surface of the positioning groove is provided with a threaded hole extending upward, the plurality of supporting arms correspond to the plurality of connecting bosses, the protrusion on the supporting arm is arranged in the clamping groove of the connecting boss so that the positioning column in the clamping groove is embedded in the positioning groove.

[0008] The plurality of connecting bolts correspond to the plurality of connecting holes, pass through the connecting holes from below, and are screwed in the threaded holes above the connecting holes.

[0009] Preferably, the protrusion is provided with a plurality of clamping grooves extending from the inner wall surface of the positioning groove to the outer side surface of the protrusion, a plurality of connecting ribs are arranged between the positioning column and the side wall of the clamping groove, and the plurality of connecting ribs are embedded in the plurality of clamping grooves one by one.

[0010] Preferably, the support arm comprises a top plate, two side plates respectively extending downward from two sides of the top plate, and a protrusion extending downward from a lower surface of the top plate, and a plurality of reinforcing ribs are arranged between the protrusion and the two side plates.

[0011] Preferably, two support wings are formed by extending outward from two sides of the connecting boss, and the two support wings are respectively supported below the reinforcing ribs on two sides of the protrusion.

[0012] Preferably, two stop blocks are arranged on the connecting boss, the two stop blocks are respectively located on two sides of the connecting boss, an inner end of each stop block is connected to an outer edge surface of the connecting seat, an outer end of each stop block forms a stop surface extending downward from a top of the stop block, lower ends of the stop surfaces of the two stop blocks are respectively connected to the two support wings, and a stop rib is arranged between the protrusion and each side plate, and the two stop ribs are respectively abutted on the two stop surfaces.

[0013] Preferably, the two stop blocks on the connecting boss are away from each other to form a matching surface, the matching surface gradually inclines from top to bottom to the middle part away from the width direction of the connecting boss, and an inner side end of each side wall of the support arm forms a pressing wall, and the two pressing walls are respectively arranged outside the two stop blocks on the connecting boss so that the two pressing walls are respectively pressed on the matching surfaces of the two stop blocks.

[0014] Preferably, the matching surface of the stop block gradually inclines from inside to outside to the middle part away from the width direction of the connecting boss, and the spacing between the two pressing walls gradually increases from inside to outside.

[0015] Preferably, an inner side end of a top wall of the support arm is arranged above an upper end surface of the connecting seat.

[0016] Preferably, the outer edge surface of the connecting seat is a circular arc surface, and a recess is arranged on an inner end surface of the protrusion, and the shape of the recess matches the shape of the outer edge surface of the connecting seat.

[0017] The seat comprises the chair leg of the seat.

[0018] Compared with the prior art, the seat has the following beneficial effects:

[0019] The inner side end of the support arm is fixed on the connecting seat through the connecting bolt, so that the support arm can be detachably connected with the connecting seat, the support arm and the connecting seat can be respectively machined through a mold with a small size, and the manufacturing cost of the chair leg of the seat is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The structure schematic view of the utility model is shown in the figure.

[0021] Figure 2 The structure schematic view of the utility model is shown in the figure. Figure 1 The structure schematic view of the utility model is shown in the figure.

[0022] Figure 3 The structure schematic view of the utility model is shown in the figure. Figure 1 The structure schematic view of the utility model is shown in the figure.

[0023] Figure 4 The sectional view of the utility model is shown in the figure.

[0024] Wherein: 10, connecting seat;11, upper end face;12, lower end face;13, outer edge face;14, connecting boss;141, clamping groove;142, positioning column;143, connecting hole;144, connecting rib;145, support wing plate;146, stop block;1461, stop face;1462, matching face;20, support arm;21, top plate;22, side plate;221, pressing wall;23, protruding block;231, positioning groove;232, threaded hole;233, clamping groove;234, recess;24, reinforcing rib;25, blocking rib. DETAILED DESCRIPTION

[0025] The utility model will be further described below in combination with the drawings and specific embodiments, and it should be noted that the following described embodiments or technical features can be combined to form new embodiments without conflict. Except for special description, the materials and equipment used in the embodiments can be purchased from the market. The examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the application and cannot be understood as a limitation on the application.

[0026] In the description of the application, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0027] In the description of the present application, it is necessary to explain that, unless otherwise explicitly specified and limited, the terms "connected", "communicated", "connected" should be understood in a broad sense, for example, it can be fixedly connected, or connected through an intermediate medium, or the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] As Figure 1 、 2 , 3, 4, it is a chair leg of the utility model, it includes connecting seat 10, five support arms 20, five connecting bolts (not shown in the figure), connecting seat 10 is located at the center position of chair leg, five support arms 20 respectively by connecting seat 10 extends to five different directions, so that five support arms 20 evenly distributed in the circumferential direction of connecting seat 10;Connecting seat 10 includes upper end face 11, the lower end face 12 opposite to the upper end face 11, the outer edge surface 13 that is connected between the upper end face 11 and the lower end face 12, five connecting bosses 14 are provided by the outer edge surface 13 outwardly convex, each connecting boss 14 is provided with a clamping groove 141 recessed downward from its upper surface, the bottom surface of clamping groove 141 is provided with the positioning column 142 that is convex upward, the connecting hole 143 is opened in the positioning column 142 and extends from its top surface to the bottom surface of connecting boss 14. The inner side end of each support arm 20 is provided with a lug 23, the lug 23 is provided with a positioning groove 231 recessed upward from its lower surface, the screw hole 232 extending upward is provided on the top surface of positioning groove 231, five support arms 20 correspond to five connecting bosses 14 on connecting seat 10 one by one, specifically, the lug 23 on support arm 20 is placed in the clamping groove 141 of connecting boss 14 from top to bottom, and the positioning column 142 in clamping groove 141 is embedded in positioning groove 231, so that the connecting hole 143 on the positioning column 142 is arranged opposite to the screw hole 232 above the positioning groove 231, five connecting bolts are inserted into the screw hole 232 above the connecting hole 143 of connecting boss 14 from below five connecting bosses 14 in turn, connecting the lug 23 on support arm 20 and connecting boss 14 together by tightening the connecting bolt.

[0029] The utility model discloses a support arm 20's inside end is fixed on the connecting seat 10 through connecting bolt, makes support arm 20 can with the detachable cooperation of connecting seat 10, and support arm 20 and connecting seat 10 can be processed through the mould of smaller size respectively, has reduced the manufacturing cost of seat chair foot, in addition, can split package support arm 20 with connecting seat 10 in the transportation process, has reduced the packing volume of seat chair foot whole, thereby has reduced the transportation cost of seat, in addition, because is through the positioning post 142 and is connected to the positioning groove 231, and the lug 23 is embedded in the clamping groove 141, and the inside end of support arm 20 and connecting boss 14 are in the state of mutual occlusion, after vertical connection using connecting bolt, the connecting place of support arm 20 and connecting boss 14 has higher strength, to meet the bearing requirement of seat.

[0030] In a preferred embodiment, a plurality of clamping grooves 233 are provided on the lug 23, extending from the inner wall of the positioning groove 231 to the outer side of the lug 23, and a plurality of connecting ribs 144 are provided between the side wall of the clamping groove 141 and the positioning post 142. When the lug 23 is clamped into the clamping groove 141, the plurality of connecting ribs 144 are respectively embedded in the plurality of clamping grooves 233. After the positioning post 142 and the positioning groove 231 are properly fitted, the connecting ribs 144 are completely placed in the corresponding clamping grooves 233. When the seat is used, the pressure borne by the seat is transmitted to the connecting seat 10. Since the outer end of the support arm 20 is subjected to the supporting force from the ground, the connecting bolt at the connection between the support arm 20 and the connecting seat 10 will inevitably bear a large torsional force. Through the cooperation of the positioning post 142 and the positioning groove 231, and the cooperation of the connecting rib 144 and the clamping groove 233, the torsional force borne at the connection between the support arm 20 and the connecting seat 10 is decomposed, thereby protecting the connecting bolt and preventing the threads in the threaded hole 232 from deforming due to excessive torsional force, ensuring that the connecting bolt can be stably locked in the threaded hole 232.

[0031] The support arm 20 includes a top plate 21, two side plates 22 extending downward from both sides of the top plate 21, and a lug 23 extending downward from the lower surface of the top plate 21, with the lug 23 located between the two side plates 22 and a plurality of reinforcing ribs 24 respectively provided between the lug 23 and the two side plates 22. The connecting boss 14 has two support wings 145 extending outward from both sides thereof, with the two support wings 145 respectively supporting the reinforcing ribs 24 below the lug 23 on both sides of the lug 23. The lug 23 is connected to the side plates 22 by the reinforcing ribs 24, allowing the lug 23 to have better strength. The two support wings 145 support the reinforcing ribs 24 on both sides of the lug 23 on both sides of the connecting boss 14, increasing the area of contact between the connecting boss 14 and the support arm 20 and avoiding stress concentration.

[0032] Two stop blocks 146 are arranged on the connecting boss 14, and the two stop blocks 146 are respectively located on the two sides of the connecting boss 14. The inner end of the stop block 146 is connected to the outer edge surface 13 of the connecting seat 10, and the outer end forms a stop surface 1461 extending downward from the top of the stop block 146. The lower ends of the stop surfaces 1461 of the two stop blocks 146 are respectively connected to the two support wings 145. The stop ribs 25 are respectively connected between the protruding blocks 23 and the two side plates 22, and the two stop ribs 25 are respectively abutted on the two stop surfaces 1461. The stop ribs 25 and the stop surfaces 1461 are abutted and matched, which further increases the contact area of the support arm 20 and the connecting seat 10, thereby further avoiding stress concentration.

[0033] The mutually facing surfaces of the two stop blocks 146 on the connecting boss 14 form a matching surface 1462. The matching surface 1462 is arranged in an inclined structure. Specifically, the matching surface 1462 gradually inclines away from the middle of the width direction of the connecting boss 14 from top to bottom. The inner side ends of the two side plates 22 of the support arm 20 respectively form a pressing wall 221. When the support arm 20 is assembled with the connecting boss 14 from top to bottom, the two pressing walls 221 are respectively arranged on the two sides of the connecting boss 14 and are located outside the two stop blocks 146. When the support arm 20 is pressed downward, the two pressing walls 221 are gradually pressed against the two inclined matching surfaces 1462. When the connecting bolt is completely locked, the two pressing walls 221 respectively generate a slight deformation, thereby being pressed against the two matching surfaces 1462. The gap between the support arm 20 and the connecting seat 10 is reduced, and loosening of the two is avoided due to the large gap. In addition, the matching surface 1462 of the stop block 146 gradually inclines away from the middle of the width direction of the connecting boss 14 from inside to outside, that is, the distance between the two stop blocks 146 gradually increases in the direction from inside to outside. The distance between the two pressing walls 221 also gradually increases in the direction from inside to outside. When the support arm 20 is matched with the connecting boss 14 from top to bottom, the two pressing walls 221 are abutted against each other, thereby positioning the support arm 20 and the connecting boss 14 in the direction from inside to outside, and improving the assembly precision.

[0034] The inner side end of the top plate 21 of the support arm 20 is a part protruding inward, so that the inner side end of the top plate 21 is arranged above the upper end surface 11 of the connecting seat 10, thereby further increasing the contact area of the support arm 20 and the connecting seat 10. The inner side end of the top plate 21 is matched with the connecting seat 10 on the inner side of the connecting bolt, thereby being able to offset the upward torsional force received by the support arm 20.

[0035] The outer edge surface 13 of the connecting seat 10 is a circular arc surface, and the inner end surface of the protrusion 23 is provided with a recessed position 234. The recessed position 234 is arranged in an arc shape, so that the shape of the recessed position 234 matches the shape of the outer edge surface 13 of the connecting seat 10, thereby enabling the outer edge surface 13 to better support the protrusion 23 and further increasing the stability of the cooperation between the support arm 20 and the connecting seat 10.

[0036] It should be pointed out that the chair leg of the utility model is not limited to including five support arms 20. The number of the support arms 20 can be set according to requirements. For example, the support arms 20 can be set to three, four or more than five.

[0037] The seat of the utility model includes the chair leg of the above-described seat. The other structures of the seat are the same as those of the prior art, and will not be described in detail here.

[0038] Finally, it should be pointed out that the above-described embodiments are only optional embodiments of the utility model, and cannot be used to limit the scope of protection of the utility model. Any non-substantial changes and replacements made by the person skilled in the art on the basis of the utility model all belong to the scope of protection required by the utility model.

Claims

1. A chair leg for a chair, characterized in that The connecting seat comprises a connecting seat, a plurality of supporting arms, and a plurality of connecting bolts. The connecting seat comprises an upper end face, a lower end face opposite to the upper end face, an outer edge face connecting between the upper end face and the lower end face, a plurality of connecting bosses protruding outward from the outer edge face, a clamping groove recessed downward from the upper surface of the connecting boss, and a positioning column protruding upward from the bottom surface of the clamping groove. The inner side end of the supporting arm is provided with a protrusion, the protrusion is provided with a positioning groove recessed upward from the lower surface of the protrusion, and the top surface of the positioning groove is provided with a threaded hole extending upward. The plurality of supporting arms correspond to the plurality of connecting bosses, the protrusion on the supporting arm is arranged in the clamping groove of the connecting boss, and the positioning column in the clamping groove is embedded in the positioning groove.

2. The chair leg of claim 1, wherein, The plurality of connecting bolts correspond to the plurality of connecting holes, pass through the connecting hole from below, and are screwed into the threaded hole above the connecting hole.

3. The seat leg of claim 1, wherein, The protrusion is provided with a plurality of clamping grooves extending from the inner wall surface of the positioning groove to the outer side surface of the protrusion, a plurality of connecting ribs are arranged between the positioning column and the side wall of the clamping groove, and the plurality of connecting ribs are embedded in the plurality of clamping grooves.

4. The chair leg of claim 3, wherein, The supporting arm comprises a top plate, two side plates extending downward from both sides of the top plate, and a protrusion extending downward from the lower surface of the top plate.

5. The seat leg of claim 4, wherein, The protrusion and the two side plates are provided with a plurality of reinforcing ribs, respectively.

6. The seat leg of claim 5, wherein, The two supporting wing plates are supported below the reinforcing ribs on both sides of the protrusion.

7. The seat leg of claim 6, wherein, The connecting boss is provided with two blocks, the two blocks are located on both sides of the connecting boss, the inner end of the block connects to the outer edge face of the connecting seat, the outer end forms a stop face extending downward from the top of the block, the lower ends of the stop faces of the two blocks connect to the two supporting wing plates, respectively, a blocking rib is arranged between the protrusion and the two side plates, respectively, and the two blocking ribs abut on the two stop faces, respectively.

8. The seat leg of claim 6, wherein, The mutually facing surfaces of the two blocks on the connecting boss form a matching surface, the matching surface gradually inclines toward the middle part away from the width direction of the connecting boss from top to bottom, the inner side ends of the two side walls of the supporting arm form a pressing wall, respectively, and the two pressing walls are arranged outside the two blocks on the connecting boss so that the two pressing walls are pressed on the matching surfaces of the two blocks, respectively.

9. The seat leg of claim 1 wherein, The matching surface of the block gradually inclines toward the middle part away from the width direction of the connecting boss from inside to outside, and the distance between the two pressing walls gradually increases from inside to outside.

10. A seat, characterized by The inner side end of the top wall of the supporting arm is arranged above the upper end face of the connecting seat. The outer edge face of the connecting seat is a circular arc face, and the inner end face of the protrusion is provided with a recess, the shape of the recess matches the shape of the outer edge face of the connecting seat. The chair foot comprises the seat according to any one of claims 1-9.

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