A multifunctional seat

Abstract

The present invention relates to a multifunctional chair, comprising a base, a main rod and a seat assembly. The main rod is arc-shaped and is slidably connected to the base along its own arc direction. First sleeves are respectively connected to both ends of the main rod. The two first sleeves are coaxially arranged. Each first sleeve is axially provided with a first through hole. Each first through hole is provided with a bearing. Two mounting pieces are arranged between the two first sleeves. Each mounting piece is respectively connected to the inner ring of one of the bearings. The seat assembly comprises a plurality of connecting rods. Two mounting pieces are respectively connected to both ends of each connecting rod. A rotating locking mechanism for fixing the mounting piece to the first sleeve is provided on the first sleeve. A sliding locking mechanism for fixing the base to the main rod is provided on the base. By sliding the main rod, the present invention can be used as both a seat and a cradle, so as to solve the technical problem that the seat in the prior art does not have the function of being used as a cradle.

Description

Technical Field

[0001] The invention relates to the technical field of seats, in particular to a multifunctional seat. Background Art

[0002] A seat is a common piece of furniture or office supplies, mainly including recliners, swivel chairs and other types. A cradle is a baby's bedding that has a rocking function so that the baby can fall asleep quickly. For families with babies, the home not only needs to be equipped with a seat, but also a cradle, which not only increases expenses but also takes up space at home; and the use cycle of the cradle is often short, and the cradle is no longer needed after the baby grows up. At this time, the cradle is idle at home and occupies storage space at home. If the seat and the cradle can be combined, it can not only reduce certain expenses, but also take up less space at home. However, there is currently a lack of a chair that can be used as both a seat and a cradle on the market. Summary of the invention

[0003] In view of the deficiencies in the prior art, an object of the present invention is to provide a multifunctional seat that can be converted between a seat and a cradle.

[0004] In order to solve the above technical problems, the present invention provides a multifunctional chair, including a base, a main rod and a seat assembly, the main rod is arc-shaped, and the main rod is slidably connected to the base along its own arc direction, and the two ends of the main rod are respectively connected with a first sleeve, the two first sleeves are coaxially arranged, each first sleeve is axially provided with a first through hole, each first through hole is provided with a bearing, two mounting parts are provided between the two first sleeves, each mounting part is respectively connected to the inner ring of one of the bearings, the seat assembly includes a plurality of connecting rods, each connecting rod is respectively connected with two mounting parts at both ends, the first sleeve is provided with a rotating locking mechanism for fixing the mounting part to the first sleeve, and the base is provided with a sliding locking mechanism for fixing the base to the main rod.

[0005] After adopting the above structure, the multifunctional chair of the present invention has the following advantages: the mounting piece and the first sleeve are connected by a bearing, so that the mounting piece can rotate relative to the first sleeve and the main rod, that is, the seat assembly can rotate, and when the main rod is slid to the lower end of the main rod to connect to the base, the present invention can be used as a rotatable seat, and when the main rod is slid to the middle part of the main rod to connect to the base and the main rod is arranged horizontally, the present invention can be used as a cradle, so that the present invention can be used as both a seat and a cradle, reducing the family expenses of purchasing a cradle and a seat at the same time, and taking up less space at home. Even after the baby grows up, the present invention can continue to be used as a seat; in addition, the rotating locking mechanism can lock the seat assembly to prevent rotation regardless of whether the present invention is used as a seat or a cradle, and the sliding locking mechanism can ensure the safety and stability of the present invention regardless of whether it is used as a seat or a cradle.

[0006] As an improvement, the sliding locking mechanism includes a first adjusting knob, a first shell and a second shell. A through groove is provided on the base. The first shell and the second shell are inserted into the through groove. The first shell and the second shell are combined to form a cavity. The main rod is inserted into the cavity and can slide along its own arc direction. The first adjusting knob is threadedly connected to the base, and one end of the first adjusting knob passes through the base and abuts against the second shell, and the other end is exposed outside the base. The main rod can be abutted against the first shell and the second shell by rotating the first adjusting knob. With this structure, the second shell can be abutted against the main rod by rotating the first adjusting knob toward the second shell, and the main rod will abut against the first shell, so that the two sides of the main rod are respectively abutted against the first shell and the second shell, thereby achieving the purpose of locking the main rod from sliding.

[0007] As an improvement, a number of rollers are rotatably provided on the first shell and / or the second shell, and the main rod is in contact with the side walls of the rollers; with this structure, the rollers can reduce the friction between the main rod and the first shell and / or the second shell, making it easier to slide the main rod.

[0008] As an improvement, the rotation locking mechanism includes a second adjusting knob, a connecting bolt, a first tooth and a second tooth. The first tooth is provided on the end surface of the mounting member facing the first sleeve, and the second tooth is provided on the end surface of the first sleeve facing the mounting member. The first tooth and the second tooth are meshed with each other. The head of the connecting bolt is connected to the inner ring of the bearing, and the threaded end of the connecting bolt is connected to the mounting member. The outer ring of the bearing is connected to the second adjusting knob and rotates synchronously. The second adjusting knob is threadedly connected in the first sleeve and is coaxially arranged with the first sleeve. Each mounting member is provided with a plurality of connecting shafts. The two ends of each connecting rod are respectively connected to the connecting shafts in the two mounting members and the connecting rod can move axially along the connecting shaft. The maximum distance of the connecting rod moving axially along the connecting shaft is greater than the minimum distance required for the first tooth to move when the first tooth is disengaged from the second tooth. When this structure is adopted In the locked state, the first tooth is meshed with the second tooth, so that the mounting piece cannot rotate relative to the first sleeve, that is, the seat assembly cannot rotate, thereby locking the seat rotation; when unlocking is required, the second adjusting knob is turned toward the mounting piece, and the second adjusting knob drives the bearing and the connecting bolt to move together. Since the mounting piece is threadedly connected to the threaded end of the connecting bolt, during the movement of the bearing and the connecting bolt, the mounting piece will only move together and will not rotate, thereby pushing the first tooth away from the second tooth. After the first tooth and the second tooth are separated, since the mounting piece is connected to the threaded end of the connecting bolt, and the connecting bolt is connected to the inner ring of the bearing, the mounting piece can rotate relative to the outer ring of the bearing, that is, rotate relative to the first sleeve and the main rod, thereby allowing the seat assembly to rotate relative to the main rod.

[0009] As an improvement, the rotation locking mechanism also includes a second sleeve, a second sleeve is provided on the end face of the mounting piece facing the first sleeve, the second sleeve is located in the first through hole, and the threaded end of the connecting bolt is threadedly connected to the second sleeve along the axial direction of the second sleeve; with this structure, when the second adjusting knob is rotated toward the mounting piece, the second adjusting knob drives the connecting bolt and the bearing to move together, and since the second sleeve is threadedly connected to the threaded end of the connecting bolt, during the movement of the connecting bolt, the second sleeve will only move together and will not rotate, thereby pushing the first tooth away from the second tooth. After the first tooth and the second tooth are separated, since the second sleeve is connected to the threaded end of the connecting bolt, the second sleeve can rotate relative to the outer ring of the bearing, thereby allowing the mounting piece to rotate relative to the first sleeve.

[0010] As an improvement, the rotation locking mechanism also includes a third sleeve and a fixing bolt, one end of the third sleeve is connected to the outer ring of the bearing and rotates synchronously with the outer ring, the other end of the third sleeve is inserted with a second adjusting knob, a second through hole is radially provided on the side wall of the third sleeve, one end of the fixing bolt is connected to the second adjusting knob, and the other end is located in the second through hole; with this structure, the second adjusting knob is connected to the bearing by the fixing bolt and the third sleeve, which has the advantage of stable connection.

[0011] As an improvement, the first teeth are arranged circumferentially along the edge of the second sleeve, and the second teeth are arranged circumferentially along the end surface of the first sleeve; with this structure, the connection structure after the first teeth and the second teeth are meshed is more stable.

[0012] As an improvement, each mounting part is provided with a plurality of connecting shafts along a virtual arc, each mounting part is provided with two first connecting rods, a first rod group and a second rod group, the first rod group and the second rod group both include a plurality of second connecting rods, each first connecting rod is provided with a slide groove along the length direction, the two first connecting rods are rotatably connected to the connecting shafts at both ends through the slide grooves respectively, and the first connecting rods can slide along the slide grooves, and the second connecting rods are rotatably provided on each of the remaining connecting shafts, and the connecting shafts are provided in the middle of the second connecting rods, the first rod group is located on the left side of the second rod group, and the first rod group and the second rod group are symmetrically arranged on the left and right; the first connecting rod and the second connecting rod have a closed The first connecting rod and the second connecting rod are parallel to each other when in the closed state; the inner end of the outermost second connecting rod in the first rod group is located on the rotation or movement path of the first connecting rod on the left, the inner end of the inner second connecting rod in the first rod group is located on the rotation path of the second connecting rod on its outer side, the inner end of the outermost second connecting rod in the second rod group is located on the rotation or movement path of the first connecting rod on the right, and the inner end of the inner second connecting rod in the second rod group is located on the rotation path of the second connecting rod on its outer side; when rotating from the closed state to the expanded state, the two first connecting rods are rotated away from each other. The two first connecting rods slide toward each other along the slide groove, so that each second connecting rod rotates to the unfolded state; when in the unfolded state, each second connecting rod abuts against the adjacent second connecting rod or the first connecting rod; each connecting rod is arc-shaped and the two ends of each connecting rod are respectively connected to one of the first connecting rods or the second connecting rods on the two mounting parts, and the mounting parts are also provided with a fixing mechanism for keeping the first connecting rod and the second connecting rod in the unfolded state; with this structure, the first connecting rod and the second connecting rod can be rotatably connected to the connecting shaft, and when the first connecting rod and the second connecting rod need to be unfolded, the two first connecting rods are respectively held in both hands and rotated After a certain angle, the two first connecting rods are slid toward each other along the slide groove, and the two first connecting rods cause the second connecting rods to rotate until each second connecting rod is against the adjacent second connecting rod or the first connecting rod, that is, the unfolded state is reached; when folding, the two first connecting rods are held and slid back and forth so that the first connecting rods are separated from the second connecting rods, and all the second connecting rods can rotate freely. At this time, the two first connecting rods are rotated toward each other to adjust the first connecting rod and the second connecting rod to the closed state. No matter it is closed or unfolded, it is only necessary to hold the first connecting rod to rotate and slide, which is simple to operate and greatly improves the folding and unfolding efficiency.

[0013] As an improvement, the mounting member includes a base plate and a side plate, the connecting shafts are all arranged on the base plate, the side plates are arranged on the base plate, the fixing mechanism includes an elastic member, a third adjusting knob and a fitting portion, each second connecting rod is provided with a fitting portion, when in the expanded state, the fitting portion on each second connecting rod is in contact with the fitting portion of the adjacent second connecting rod to achieve self-locking, a polygonal portion is coaxially provided on the third adjusting knob, a polygonal hole matching the polygonal portion is provided on the side plate, the third adjusting knob is movably inserted in the polygonal hole, when the polygonal portion is located in the polygonal hole, the third adjusting knob cannot rotate, the elastic member is inserted in the third adjusting knob and the two ends of the elastic member are respectively connected to the two first connecting rods; with this structure, by moving the third adjusting knob axially so that the polygonal portion is away from the polygonal hole, the third adjusting knob can be rotated at this time, by rotating the third adjusting knob, the two first connecting rods are fixed by the tightened elastic member and then the polygonal portion is moved into the polygonal hole, at this time the third adjusting knob cannot rotate, so that the elastic member fixes the two first connecting rods.

[0014] As an improvement, a first limit plate is provided on the bottom plate, a second limit plate is provided on the third adjusting knob, the third adjusting knob is inserted into the first limit plate, and the first limit plate is located between the second limit plate and the polygonal part; by adopting this structure, the third adjusting knob is limited by the first limit plate and the second limit plate to prevent the third adjusting knob from falling out of the polygonal hole when the third adjusting knob is moved axially. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0016] Figure 2 for Figure 1 A partial enlarged view of part A in the middle.

[0017] Figure 3 It is a cross-sectional view of the whole of the present invention.

[0018] Figure 4 for Figure 3 A partial enlarged view of part B in the middle.

[0019] Figure 5 It is a schematic diagram of the exploded structure of the rotation locking mechanism in the present invention.

[0020] Figure 6 It is a cross-sectional view of the rotation locking mechanism in the present invention.

[0021] Figure 7 It is a schematic diagram of the structure of the first connecting rod and the second connecting rod in the present invention when they are in an unfolded state.

[0022] Figure 8 for Figure 7 A partial enlarged view of part C in the middle.

[0023] Fig. 9 It is a schematic diagram of the structure of the first connecting rod and the second connecting rod in the closed state in the present invention.

[0024] Fig.10 It is a schematic diagram of the three-dimensional structure of the first connecting rod, the second connecting rod and the mounting member in the invention.

[0025] 1. base; 2. main rod; 3. first sleeve; 300. first through hole; 4. bearing; 5. mounting member; 51. bottom plate; 52. side plate; 6. connecting rod; 7. first adjusting knob; 8. first shell; 9. second shell; 10. through groove; 11. roller; 12. second adjusting knob; 13. connecting bolt; 14. first tooth; 15. second tooth; 16. connecting shaft; 17. second sleeve; 18. third sleeve; 19. fixing bolt; 20. second through hole; 21. first connecting rod; 22. first rod group; 23. second rod group; 24. second connecting rod; 25. slide groove; 26. elastic member; 27. third adjusting knob; 28. fitting portion; 29. ​​polygonal portion; 30. polygonal hole; 31. first limit plate; 32. second limit plate; 33. first inclined surface; 34. second inclined surface; 35. arc surface. DETAILED DESCRIPTION

[0026] A multifunctional chair of the present invention is described in detail below in conjunction with the accompanying drawings.

[0027] like Figures 1 to 10 As shown, a multifunctional chair includes a base 1, a main rod 2 and a seat assembly, the main rod 2 is arc-shaped, and the main rod 2 is slidably connected to the base 1 along its own arc direction, and first sleeves 3 are respectively connected to both ends of the main rod 2, and the two first sleeves 3 are coaxially arranged, and each first sleeve 3 is axially provided with a first through hole 300, and each first through hole 300 is provided with a bearing 4, and two mounting members 5 are arranged between the two first sleeves 3, and each mounting member 5 is respectively connected to the inner ring of one of the bearings 4, and the seat assembly includes a plurality of connecting rods 6, and the connecting rods 6 are all arc-shaped, and two mounting members 5 are respectively connected to both ends of each connecting rod 6, and each connecting rod 6 is on the same virtual sphere, and the connecting rod 6 and the main rod 2 form a semi-globe ritual shape; a rotating locking mechanism for fixing the mounting member 5 to the first sleeve 3 is provided on the first sleeve 3, and a sliding locking mechanism for fixing the base 1 to the main rod 2 is provided on the base 1.

[0028] The present invention connects the mounting member 5 and the first sleeve 3 through the bearing 4, so that the mounting member 5 can rotate relative to the first sleeve 3 and the main rod 2, that is, the seat assembly can rotate. When the main rod 2 is slid to the lower end of the main rod 2 and connected to the base 1, the present invention can be used as a rotatable chair. It should be noted that the lower end in "the lower end of the main rod 2 is connected to the base 1" does not refer to the lowermost end of the main rod 2, but the position on the main rod 2 and close to the lowermost end of the main rod 2, that is, the line connecting the two ends of the main rod 2 at this time has an angle with the vertical direction, and the size of the angle can be adjusted according to the user's usage habits and comfort; when the main rod 2 is slid to the main rod 2, the lower end of the main rod 2 is connected to the base 1. 2 is connected to the base 1 in the middle and the main rod 2 is arranged horizontally, that is, the line connecting the two ends of the main rod 2 is arranged horizontally, the present invention can be used as a cradle; in this way, the present invention can be used as both a seat and a cradle, which reduces the family expenses of purchasing a cradle and a seat at the same time, and can also take up less space at home. Even after the baby grows up, the present invention can continue to be used as a seat; in addition, the rotation locking mechanism can lock the seat assembly to prevent rotation regardless of whether the present invention is used as a seat or a cradle, and the sliding locking mechanism can ensure the safety and stability of the present invention regardless of whether it is used as a seat or a cradle.

[0029] like Figure 2 As shown, the sliding locking mechanism includes a first adjusting knob 7, a first shell 8 and a second shell 9. A through groove 10 is provided on the base 1, and the through groove 10 is arranged radially along the base 1. The first shell 8 and the second shell 9 are inserted into the through groove 10. The first shell 8 and the second shell 9 are surrounded by a cavity, wherein the first shell 8 and the second shell 9 are both L-shaped, that is, the first shell 8 and the second shell 9 each include a horizontal plate and a vertical plate, and the cross-sectional shape of the cavity is rectangular. The main rod 2 is inserted into the cavity and can slide along its own arc direction. The first adjusting knob 7 is threadedly connected to the base 1, and one end of the first adjusting knob 7 passes through the base 1 and The second shell 9 abuts against each other, and the other end is exposed outside the base 1. By rotating the first adjusting knob 7 toward the second shell 9, the second shell 9 is pressed against the main rod 2, and the main rod 2 is pressed against the first shell 8, so that the two sides of the main rod 2 are respectively pressed against the first shell 8 and the second shell 9, thereby achieving the purpose of locking the main rod 2 from sliding; a plurality of rollers 11 are rotatably provided on the first shell 8 and / or the second shell 9, and the main rod 2 is in contact with the side walls of the rollers 11; in this embodiment, rollers 11 are provided on both the first shell 8 and the second shell 9, and the rollers 11 on the horizontal plates of the first shell 8 and the second shell 9 are horizontally arranged, and the rollers 11 on the vertical plates are vertically arranged.

[0030] like Figures 3 to 6As shown, the rotation locking mechanism includes a second adjusting knob 12, a connecting bolt 13, a first tooth 14, a second tooth 15, a second sleeve 17, a third sleeve 18 and a fixing bolt 19. The first tooth 14 is provided on the end surface of the mounting member 5 and facing the first sleeve 3, and the second tooth 15 is provided on the end surface of the first sleeve 3 and facing the mounting member 5, wherein the first tooth 14 and the second tooth 15 are both distributed in a circumferential shape, and the second tooth 15 is arranged circumferentially along the end surface of the first sleeve 3, and the first tooth 14 and the second tooth 15 are meshed with each other; the head of the connecting bolt 13 is connected to the inner ring of the bearing 4, and the specific structure of the connecting bolt 13 and the bearing 4 is the bolt bearing in the prior art, which will not be repeated here; the threaded end of the connecting bolt 13 is connected to the mounting member 5, and the outer ring of the bearing 4 is connected to the second adjusting knob 12 and rotates synchronously; wherein the mounting member 5 and facing the first sleeve 3 is provided with a second sleeve 17, and the second sleeve 17 is arranged on the inner ring of the first tooth 14, that is, the first tooth 14 is arranged circumferentially along the edge of the second sleeve 17; the second sleeve 17 is located in the first through hole 300, and the threaded end of the connecting bolt 13 is threadedly connected with the second sleeve 17 along the axial direction of the second sleeve 17; the second adjusting knob 12 is threadedly connected in the first sleeve 3 and is coaxially arranged with the first sleeve 3, one end of the third sleeve 18 is connected to the outer ring of the bearing 4 and rotates synchronously with the outer ring, and the other end of the third sleeve 18 is plugged with the second adjusting knob 12, and a second through hole 20 is radially provided on the side wall of the third sleeve 18, one end of the fixing bolt 19 is connected to the second adjusting knob 12, and the other end is located in the second through hole 20, that is, the outer ring of the bearing 4 is connected to the second adjusting knob 12 through the third sleeve 18 and the fixing bolt 19. The second adjusting knob 12 rotates synchronously.

[0031] In this embodiment, the first sleeve 3, the second sleeve 17, and the third sleeve 18 are all annular cylindrical, and the first through hole 300 is circular; during assembly, the third sleeve 18 is first welded to the outer ring of the bearing 4, and then the threaded end of the connecting bolt 13 is threadedly connected to the second sleeve 17, and then the first sleeve 3 is put on so that the first teeth 14 are meshed with the second teeth 15. At this time, the second adjusting knob 12 is screwed into the first sleeve 3, and it is ensured that the threaded hole on the second adjusting knob 12 is coaxial with the second through hole 20, and then the fixing bolt 19 is screwed from the channel on the side wall of the first sleeve 3 into the threaded hole of the second adjusting knob 12, and it is ensured that the other end of the fixing bolt 19 is located in the second through hole 20 without exceeding the second through hole 20.

[0032] like Figure 4As shown, a number of connecting shafts 16 are provided on each mounting member 5. The mounting member 5 is a U-shaped housing structure. The connecting shafts 16 are arranged between the inner walls on both sides of the mounting member 5. Both ends of each connecting rod 6 are respectively connected to the connecting shafts 16 in two mounting members 5, and the connecting rod 6 can move axially along the connecting shaft 16. The maximum distance that the connecting rod 6 moves axially along the connecting shaft 16 is greater than the minimum distance that the first tooth 14 needs to move when the first tooth 14 and the second tooth 15 are disengaged. Since the second adjustment knob 12 makes the first tooth 14 move away from the second tooth 15 by pushing the mounting member 5, the maximum distance that the connecting rod 6 moves axially along the connecting shaft 16 is greater than the minimum distance that the first tooth 14 needs to move when the first tooth 14 and the second tooth 15 are disengaged, that is, it is ensured that the movement margin between the mounting member 5 and the connecting rod 6 is sufficient to separate the first tooth 14 and the second tooth 15.

[0033] In the locked state, the first tooth 14 and the second tooth 15 are engaged, so that the mounting member 5 cannot rotate relative to the first sleeve 3, thereby locking the rotation of the seat. When unlocking is required, the second adjustment knob 12 is rotated in the direction close to the mounting member 5. The second adjustment knob 12 drives the bearing 4 and the connecting bolt 13 to move together. Since the second sleeve 17 is threadedly connected to the threaded end of the connecting bolt 13, during the movement of the bearing 4 and the connecting bolt 13, the second sleeve 17 will only move together and will not rotate, thereby pushing the first tooth 14 away from the second tooth 15. After the first tooth 14 and the second tooth 15 are separated, since the second sleeve 17 is connected to the threaded end of the connecting bolt 13, the second sleeve 17 can rotate relative to the outer ring of the bearing 4, thereby making the mounting member 5 rotate relative to the first sleeve 3, and also making the seat assembly rotate relative to the main rod 2.

[0034] As Figures 7 to 10 shown, a number of connecting shafts 16 are distributed along a virtual arc on each mounting member 5. The mounting member 5 includes a bottom plate 51, side plates 52 and a top plate. In this embodiment, the bottom plate 51 and the top plate have the same shape and size and are both arc-shaped, preferably semi-elliptical. The side plates 52 connect the diameter sides of the bottom plate 51 and the top plate so that the cross-section of the mounting member 5 is U-shaped. Among them, the second sleeve 17 and the first tooth 14 are both arranged on the bottom plate 51 and close to one end of the first sleeve 3. The connecting shafts 16 are all arranged on the bottom plate 51, and the other end of the connecting shaft 16 is connected to the top plate. In this embodiment, as Figure 7As shown, a plurality of connecting shafts 16 are distributed along the virtual arc M on the mounting member 5; two first connecting rods 21, a first rod group 22 and a second rod group 23 are provided on each mounting member 5, the first rod group 22 and the second rod group 23 both include a plurality of second connecting rods 24, each first connecting rod 21 is provided with a slide groove 25 along the length direction, the two first connecting rods 21 are rotatably connected to the connecting shafts 16 at both ends through the slide grooves 25, and the first connecting rod 21 can slide along the slide grooves 25, that is, the two connecting shafts 16 at both ends are respectively arranged in the two slide grooves 25, and the second connecting rod 24 is rotatably provided on each of the remaining connecting shafts 16, and the connecting shaft 16 is arranged in the middle of the second connecting rod 24, the first rod group 22 is located on the left side of the second rod group 23, and the first rod group 22 and the second rod group 23 are arranged symmetrically, that is, the second connecting rods 24 in the first rod group 22 are both located on the left side of the second connecting rod 24 in the second rod group 23; the first connecting rod 21 and the second connecting rod 24 have a closed state and an unfolded state, as shown in FIG. Fig. 9As shown, when in the closed state, the first connecting rod 21 and the second connecting rod 24 are parallel to each other and all the second connecting rods 24 are located between the two first connecting rods 21. It should be noted that the first connecting rod 21 and the second connecting rod 24 referred to in this embodiment are parallel to each other, which is a structural state when the first connecting rod 21 and the second connecting rod 24 are in the closed state in an ideal state. In actual use, the first connecting rod 21 and the second connecting rod 24 in the closed state have a certain degree of freedom, so there is a certain angle offset between the first connecting rod 21 and the second connecting rod 24, and in this state, the distance between the second connecting rod 24 and the side plate 52 gradually decreases from the outside to the inside, that is, the closer the second connecting rod 24 is to the first connecting rod 21, the closer it is to the side plate 52, and the two first connecting rods 21 are closest to the side plate 52; the inner end of the outermost second connecting rod 24 in the first rod group 22 is located on the rotation or movement path of the first connecting rod 21 on the left, and the inner end of the inner second connecting rod 24 in the first rod group 22 is located outside thereof. The inner end of the second connecting rod 24 on the outermost side of the second rod group 23 is located on the rotation or movement path of the first connecting rod 21 on the right side, and the inner end of the second connecting rod 24 on the inner side of the second rod group 23 is located on the rotation path of the second connecting rod 24 on the outer side thereof; in this way, when rotating from the closed state to the unfolded state, the two first connecting rods 21 are rotated away from each other and the two first connecting rods 21 are slid toward each other along the slide groove 25, and the two first connecting rods 21 first hit the two outermost second connecting rods 24, so that the two second connecting rods 24 rotate outwardly, that is, the second connecting rod 24 on the right side rotates in a clockwise direction, and the second connecting rod 24 on the left side rotates in a counterclockwise direction, and the two outermost second connecting rods 24 hit the second connecting rod 24 on the inner side thereof when rotating, so that the second connecting rod 24 on the inner side also rotates, and so on, so that all the second connecting rods 24 rotate, that is, each second connecting rod 24 rotates to the unfolded state; Figure 7 As shown, when in the unfolded state, each second connecting rod 24 abuts against the adjacent second connecting rod 24 or first connecting rod 21, and the first connecting rod 21 and the second connecting rod 24 are distributed on the mounting member 5 in a fan shape; Fig. 9 As shown, each second connecting rod 24 is provided with a first inclined surface 33 at both ends close to the adjacent second connecting rod 24 or the first connecting rod 21 , and a second inclined surface 34 is provided at one end of the first connecting rod 21 close to the second connecting rod 24 .

[0035] like Figure 8As shown, the mounting member 5 is also provided with a fixing mechanism for keeping the first connecting rod 21 and the second connecting rod 24 in the unfolded state; the fixing mechanism includes an elastic member 26, a third adjusting knob 27 and a fitting portion 28, each second connecting rod 24 is provided with a fitting portion 28, when in the unfolded state, the fitting portion 28 on each second connecting rod 24 is in contact with the fitting portion 28 of the adjacent second connecting rod 24 to achieve self-locking, in this embodiment, the fitting portion 28 is the first inclined surface 33 or the side wall end surface of the second connecting rod 24, as shown in FIG. Figure 7 As shown, the fitting portions 28 of the two outermost second connecting rods 24 are their first inclined surfaces 33, and the fitting portions 28 of the inner second connecting rod 24 are respectively one of the first inclined surfaces 33 and the side wall end surface on the third adjusting knob 27; a polygonal portion 29 is coaxially provided on the third adjusting knob 27, and a polygonal hole 30 matching the polygonal portion 29 is provided on the side plate 52, that is, after the polygonal portion 29 is inserted into the polygonal hole 30, the polygonal portion 29 and the third adjusting knob 27 cannot rotate. In this embodiment, the polygonal portion 29 and the polygonal hole 30 are both rectangular, and the third adjusting knob 27 is movably inserted into the polygonal hole 30, wherein one end of the third adjusting knob 27 is exposed outside the side plate 52, and the other end passes through the polygonal hole 30 and is located on the bottom plate 51. At the top, when the polygonal portion 29 is located in the polygonal hole 30, the third adjusting knob 27 cannot rotate, the elastic member 26 is inserted into the third adjusting knob 27 and the two ends of the elastic member 26 are respectively connected to the two first connecting rods 21; by moving the third adjusting knob 27 axially to make the polygonal portion 29 away from the polygonal hole 30, the third adjusting knob 27 can rotate at this time. At this time, the third adjusting knob 27 is rotated, and the elastic member 26 is wound around the third adjusting knob 27, so that the two first connecting rods 21 are fixed with the tightened elastic member 26 and then the polygonal portion 29 is moved into the polygonal hole 30. At this time, the third adjusting knob 27 cannot rotate, so that the elastic member 26 fixes the two first connecting rods 21. In this embodiment, the elastic member 26 is a torsion spring.

[0036] In the actual production design process, the number of second connecting rods 24 to be selected is first determined, and then the angles between adjacent first connecting rods 21 and second connecting rods 24 in the expanded state are evenly distributed according to the total number of second connecting rods 24 and first connecting rods 21, and then the position and angle of the first inclined surface 33 and the fitting portion 28 are determined according to the contact surface between the first connecting rod 21 and the second connecting rod 24 at this time. This embodiment is used as an example for specific description; in this embodiment, there are a total of six second connecting rods 24, that is, the total number of second connecting rods 24 and first connecting rods 21 is eight, and it is expected that the two first connecting rods 21 are in a horizontal state in the expanded state, so that the angle between adjacent first connecting rods 21 or second connecting rods 24 in the expanded state is about 25.7°, and the angle of each first connecting rod 21 and second connecting rod 24 is confirmed at this angle, and the first The outermost ends of the connecting rod 21 and the second connecting rod 24 are distributed along a semi-ellipse. After the positions of the first connecting rod 21 and the second connecting rod 24 are determined, the interfering parts of the first connecting rod 21 and the second connecting rod 24 are cut off, thereby obtaining the positions and angles of part of the first inclined surface 33 and all the fitting parts 28 on each second connecting rod 24. Then, the first connecting rod 21 and the second connecting rod 24 are rotated to a closed state, and the interfering parts of the first connecting rod 21 and the second connecting rod 24 with other parts during this rotation process are cut off to ensure the normal rotation of the first connecting rod 21 and the second connecting rod 24, thereby obtaining the remaining first inclined surfaces 33 and other interference avoidance areas, such as the arc surface 35 on the end of the first connecting rod 21 away from the second connecting rod 24, which is to prevent interference between the first connecting rod 21 and the side plate 52.

[0037] like Figure 8 As shown, the bottom plate 51 is provided with a first limit plate 31, the third adjustment knob 27 is provided with a second limit plate 32, the third adjustment knob 27 is inserted into the first limit plate 31, and the first limit plate 31 is located between the second limit plate 32 and the polygonal portion 29, that is, Figure 8 From bottom to top, there are one end of the third adjustment knob 27, the polygonal portion 29, the first limit plate 31 and the second limit plate 32;

[0038] like Fig. 9 The figure shows the closed state of the first connecting rod 21 and the second connecting rod 24. When the first connecting rod 21 and the second connecting rod 24 need to be unfolded, the two first connecting rods 21 are respectively held by both hands and rotated to a horizontal level, and then the two first connecting rods 21 are slid toward each other along the slide groove 25. The two first connecting rods 21 cause the two outermost second connecting rods 24 to rotate, and further drive the inner second connecting rods 24 to rotate, until each second connecting rod 24 is against the adjacent second connecting rod 24 or first connecting rod 21, that is, the state as shown in FIG. Figure 7When folding, the two first connecting rods 21 are held and slid backwards so that the first connecting rods 21 and the second connecting rods 24 are separated, and all the second connecting rods 24 can rotate freely. At this time, the two first connecting rods 21 are rotated toward each other to adjust the first connecting rods 21 and the second connecting rods 24 to the closed state. Whether it is closed or unfolded, it is only necessary to hold the first connecting rod 21 to rotate and slide, which is simple to operate and greatly improves the folding and unfolding efficiency.

[0039] Each connecting rod 6 is arc-shaped and the two ends of each connecting rod 6 are respectively connected to one of the first connecting rods 21 or the second connecting rods 24 on the two mounting parts 5. In actual use, the seat is folded or unfolded by rotating and sliding the connecting rod 6 on the first connecting rod 21, which greatly improves the efficiency of folding and unfolding.

[0040] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned one embodiment, and all other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the present invention.

Claims

1. A multifunctional seat, characterized in that: The invention comprises a base (1), a main rod (2) and a seat assembly, wherein the main rod (2) is arc-shaped and is slidably connected to the base (1) along its own arc direction, and the two ends of the main rod (2) are respectively connected to a first sleeve (3), and the two first sleeves (3) are coaxially arranged, and each of the first sleeves (3) is provided with a first through hole (300) along the axial direction, and each of the first through holes (300) is provided with a bearing (4), and two mounting members (5) are provided between the two first sleeves (3), and each of the mounting members (5) is respectively connected to the inner ring of one of the bearings (4); the seat assembly comprises a plurality of connecting rods (6), and the two ends of each of the connecting rods (6) are respectively connected to two of the mounting members (5), and the first sleeve (3) is provided with a rotation locking mechanism for fixing the mounting member (5) to the first sleeve (3), and the base (1) is provided with a sliding locking mechanism for fixing the base (1) to the main rod (2); The sliding locking mechanism comprises a first adjusting knob (7), a first shell (8) and a second shell (9); a through slot (10) is provided on the base (1); the first shell (8) and the second shell (9) are inserted into the through slot (10); the first shell (8) and the second shell (9) together form a cavity; the main rod (2) is inserted into the cavity and can slide along its own arc direction; the first adjusting knob (7) is threadedly connected to the base (1); one end of the first adjusting knob (7) passes through the base (1) and abuts against the second shell (9); the other end is exposed outside the base (1); the main rod (2) can be abutted against the first shell (8) and the second shell (9) by rotating the first adjusting knob (7); The rotation locking mechanism comprises a second adjusting knob (12), a connecting bolt (13), a first tooth (14) and a second tooth (15); the first tooth (14) is provided on an end surface of the mounting member (5) facing the first sleeve (3); the second tooth (15) is provided on an end surface of the first sleeve (3) facing the mounting member (5); the first tooth (14) and the second tooth (15) are meshed with each other; the head of the connecting bolt (13) is connected to the inner ring of the bearing (4); the threaded end of the connecting bolt (13) is connected to the mounting member (5); the outer ring of the bearing (4) is connected to the second adjusting knob (12); The first and second adjusting knobs (12) are connected and rotate synchronously, the second adjusting knob (12) is threadedly connected in the first sleeve (3) and is coaxially arranged with the first sleeve (3), each of the mounting parts (5) is provided with a plurality of connecting shafts (16), the two ends of each of the connecting rods (6) are respectively connected to the connecting shafts (16) in two of the mounting parts (5), and the connecting rod (6) can move axially along the connecting shaft (16), and the maximum distance of the axial movement of the connecting rod (6) along the connecting shaft (16) is greater than the minimum distance that the first tooth (14) needs to move when the first tooth (14) is disengaged from the second tooth (15); The rotation locking mechanism further comprises a second sleeve (17), the second sleeve (17) being provided on the end surface of the mounting member (5) facing the first sleeve (3), the second sleeve (17) being located in the first through hole (300), and the threaded end of the connecting bolt (13) being threadedly connected to the second sleeve (17) along the axial direction of the second sleeve (17); The rotation locking mechanism further comprises a third sleeve (18) and a fixing bolt (19); one end of the third sleeve (18) is connected to the outer ring of the bearing (4) and rotates synchronously with the outer ring; the other end of the third sleeve (18) is plugged with the second adjusting knob (12); a second through hole (20) is radially provided on a side wall of the third sleeve (18); one end of the fixing bolt (19) is connected to the second adjusting knob (12) and the other end is located in the second through hole (20).

2. A multifunctional seat according to claim 1, characterized in that: A plurality of rollers (11) are rotatably provided on the first shell (8) and / or the second shell (9), and the main rod (2) is in contact with the side walls of the rollers (11).

3. A multifunctional seat according to claim 1, characterized in that: The first teeth (14) are arranged along the circumferential edge of the second sleeve (17), and the second teeth (15) are arranged along the circumferential end surface of the first sleeve (3).

4. A multifunctional seat according to claim 1, characterized in that: A plurality of connecting shafts (16) are distributed along a virtual arc on each of the mounting members (5), and each of the mounting members (5) is provided with two first connecting rods (21), a first rod group (22) and a second rod group (23), and the first rod group (22) and the second rod group (23) each include a plurality of second connecting rods (24), and each of the first connecting rods (21) is provided with a slide groove (25) along the length direction, and the two first connecting rods (21) are rotatably connected to the connecting shafts (16) at both ends through the slide grooves (25), and the first connecting rods (21) can slide along the slide grooves (25), and each of the remaining connecting shafts (16) ) are rotatably provided with the second connecting rod (24) and the connecting shaft (16) is provided in the middle of the second connecting rod (24); the first rod group (22) is located on the left side of the second rod group (23) and the first rod group (22) and the second rod group (23) are symmetrically arranged on the left and right; the first connecting rod (21) and the second connecting rod (24) have a closed state and an expanded state, and when in the closed state, the first connecting rod (21) and the second connecting rod (24) are parallel to each other; the inner end of the outermost second connecting rod (24) in the first rod group (22) is located on the left side of the first connecting rod (21) when rotating The second connecting rod (24) on the inner side of the first rod group (22) is located on the rotation path of the second connecting rod (24) on the outer side thereof, the inner end of the second connecting rod (24) on the outermost side of the second rod group (23) is located on the rotation path of the first connecting rod (21) on the right side, and the inner end of the second connecting rod (24) on the inner side of the second rod group (23) is located on the rotation path of the second connecting rod (24) on the outer side thereof; when rotating from the closed state to the expanded state, the two first connecting rods (21) are rotated in a direction away from each other and the two first connecting rods (21) are moved away from each other. The rods (21) slide toward each other along the slide grooves (25), so that each of the second connecting rods (24) rotates to the unfolded state; when in the unfolded state, each of the second connecting rods (24) abuts against the adjacent second connecting rod (24) or the first connecting rod (21); each of the connecting rods (6) is arc-shaped and the two ends of each of the connecting rods (6) are respectively connected to one of the first connecting rods (21) or the second connecting rods (24) on the two mounting members (5); and the mounting member (5) is also provided with a fixing mechanism for keeping the first connecting rod (21) and the second connecting rod (24) in the unfolded state.

5. A multifunctional seat according to claim 4, characterized in that: The mounting member (5) comprises a bottom plate (51) and a side plate (52), the connecting shaft (16) is arranged on the bottom plate (51), the side plate (52) is arranged on the bottom plate (51), the fixing mechanism comprises an elastic member (26), a third adjusting knob (27) and a fitting portion (28), each of the second connecting rods (24) is provided with the fitting portion (28), and when in the unfolded state, the fitting portion (28) on each of the second connecting rods (24) is in contact with the fitting portion (28) of the adjacent second connecting rod (24). The third adjusting knob (27) is coaxially provided with a polygonal portion (29), the side plate (52) is provided with a polygonal hole (30) matching the polygonal portion (29), the third adjusting knob (27) is movably inserted into the polygonal hole (30), when the polygonal portion (29) is located in the polygonal hole (30), the third adjusting knob (27) cannot rotate, the elastic member (26) is inserted into the third adjusting knob (27), and the two ends of the elastic member (26) are respectively connected to the two first connecting rods (21).

6. A multifunctional seat according to claim 5, characterized in that: A first limiting plate (31) is provided on the bottom plate (51), a second limiting plate (32) is provided on the third adjusting knob (27), the third adjusting knob (27) is inserted into the first limiting plate (31), and the first limiting plate (31) is located between the second limiting plate (32) and the polygonal portion (29).

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