Direction conversion structure and sofa

Abstract

The invention discloses a direction conversion structure and a sofa. The direction conversion structure comprises a base, a rotating structure and a rotating cushion frame, the rotating structure is arranged in a mounting groove in the base; the rotating structure comprises a fixed part and a sliding part; the fixing piece is fixedly arranged in the mounting groove of the base; the first end of the sliding piece can move along the moving track on the fixed piece; the second end of the sliding part synchronously moves along the inner wall of the fixed part when the first end of the sliding part moves and is adjusted to be in various rotating gear states; the bottom of the rotary cushion frame is connected with a sliding piece in the rotary structure and rotates relative to the base when the sliding piece rotates. The parts included in the direction conversion structure are installed in the concentrated area of the base, so that accumulative errors caused by operation of the scattered parts in the direction conversion process are small, the direction conversion structure runs smoothly, steering operation is continuous, and the operation experience feeling of a user is improved.

Description

Technical Field

[0001] The invention relates to the technical field of furniture, and in particular to a direction conversion structure and a sofa. Background Art

[0002] Direction conversion functional parts are important components in the furniture industry, especially for sofas. They are mainly used to adjust the direction of the sofa cushions, thereby realizing the sofa's sitting or lying functions.

[0003] In the patent with application number CN202020897150.8, the rotating functional part is composed of 2 guide grooves, an auxiliary groove and rollers at corresponding positions. The specific process of steering is that when the seat frame rotates clockwise from 0° around the center point (i.e., the starting point of the auxiliary groove) to 45°, the tip of the lower left corner touches (interferes) with the left sofa seat. At this time, the seat frame is pulled up with force, and the bottom roller is lifted and moves along the auxiliary groove direction to the end of the auxiliary groove. Then, the seat frame is forced to continue rotating to 90° around the end of the auxiliary groove. At this time, there will be a wide gap between the left side of the seat frame and the adjacent sofa seat, and the seat frame needs to be pushed hard, and the bottom roller returns from the end of the auxiliary groove to the starting point of the auxiliary groove, i.e., the center point. However, the above scheme has the following defects:

[0004] 1) The components included in the rotating functional part are installed in a dispersed manner. The accumulated error caused by the dispersed components during the rotation process is large, which can easily cause the rotating functional part to operate poorly, thereby failing to smoothly turn the sofa;

[0005] 2) When the rotating functional parts realize the steering of the sofa, the seat frame will cause the soft leather and fabric of the adjacent cushions to scratch and interfere;

[0006] 3) There are problems in the rotating functional parts such as insufficient plate strength and difficulty in ensuring the assembly accuracy of parts;

[0007] 4) The sofa steering operation is discontinuous and the user experience is poor. Summary of the invention

[0008] The present invention provides a direction conversion structure and a sofa, aiming to solve the problem that the components included in the direction conversion function parts used for the direction conversion of the sofa in the prior art are installed in a dispersed manner, and the cumulative error caused by the dispersed parts during the rotation process is large, which easily causes the rotation function parts to operate poorly, the steering operation to be discontinuous, and the user experience to be poor.

[0009] In a first aspect, the present invention provides a direction conversion structure, which includes a base, a rotating structure, and a rotating seat cushion frame; the rotating structure is disposed in an installation groove on the base; the rotating structure includes a fixed member and a sliding member; the fixed member is fixedly disposed in the installation groove of the base; a first end of the sliding member can move along a moving track on the fixed member; a second end of the sliding member synchronously moves along the inner wall of the fixed member when the first end of the sliding member moves and is adjusted to a plurality of rotating gear states; a bottom of the rotating seat cushion frame is connected to the sliding member in the rotating structure and rotates relative to the base when the sliding member rotates.

[0010] In some embodiments, the base includes a bottom plate, a first support member, and a second support member; wherein, the first support member is disposed on a lower end surface of the bottom plate and is used as a bottom support structure; the second support member is disposed on an upper end surface of the bottom plate and surrounds the installation groove, and is used as a rotating support structure for the rotating seat cushion frame.

[0011] In some embodiments, the second support member includes a plurality of sub-support members, and a frame limiting ball structure for limiting the rotating seat cushion frame is disposed on an upper end surface of each sub-support member.

[0012] In some embodiments, the rotating seat cushion frame includes a seat cushion frame body, a frame connecting member, and a wear-resistant member; the frame connecting member is disposed on a lower end surface of the seat cushion frame body and is connected to the sliding member; the wear-resistant member is disposed on the lower end surface of the seat cushion frame body and is supported by the second support member when the seat cushion frame body rotates following the seat cushion frame body.

[0013] In some embodiments, the fixed member includes a first fixing plate, an orbital structure body, and a second fixing plate which are sequentially arranged from bottom to top; the first fixing plate, the orbital structure body, and the second fixing plate are fixedly connected by a first connecting member; the moving track is disposed on the first fixing plate, or a sandwich space between the first fixing plate and the second fixing plate forms the moving track; the first fixing plate and the base are fixedly connected by a second connecting member.

[0014] In some embodiments, the sliding member includes a sliding member body, a limiting moving structure, an end movement structure, and a frame connecting structure; the limiting moving structure is fixedly connected to a bottom of a first end of the sliding member body, the limiting moving structure is adapted to the moving track and is movably connected to the moving track; the frame connecting structure is disposed on a top of the sliding member body and is connected to the rotating seat cushion frame; the end movement structure is disposed at a second end of the sliding member body.

[0015] In some embodiments, the end movement structure is a non-roller structure, a single-roller structure or a multi-roller structure; when the end movement structure is a non-roller structure, the non-roller structure is integrally formed with the sliding member body or is an assembly; when the end movement structure is a single-roller structure, the single-roller structure is connected to the second end of the sliding member body and can roll along the inner wall of the fixing member; when the end movement structure is a multi-roller structure, the multi-roller structure is provided on the outer edge of the second end of the sliding member body and can roll along the inner wall of the fixing member.

[0016] In a second aspect, the present invention further provides a sofa, which includes the direction conversion structure as described in the first aspect and any of its embodiments above, and further includes a rotating seat cushion connected to the rotating seat cushion frame in the direction conversion structure, and a plurality of seat cushions and a plurality of backrests provided on the base in the direction conversion structure; wherein, when the rotating seat cushion rotates relative to the base, there is no interference or rubbing with the adjacent seat cushion soft leather material and fabric.

[0017] In some embodiments, the rotating seat cushion includes an armrest portion and a seat cushion portion, and the armrest portion is connected to the seat cushion portion.

[0018] In some embodiments, the seat cushion portion is connected to the rotating seat cushion frame in the direction conversion structure, and the rotating seat cushion rotates relative to the base when the rotating seat cushion frame follows the sliding member to rotate, so as to adjust the rotation gear of the rotating seat cushion relative to the base.

[0019] Compared with the prior art, the direction conversion structure and the sofa provided by the present invention, the direction conversion structure includes a base, a rotating structure and a rotating seat cushion frame; the rotating structure is arranged in the installation groove on the base; the rotating structure includes a fixing member and a sliding member; the fixing member is fixedly arranged in the installation groove of the base; the first end of the sliding member can move along the moving track on the fixing member; the second end of the sliding member synchronously moves along the inner wall of the fixing member when the first end of the sliding member moves and is adjusted to a plurality of rotating gear states; the bottom of the rotating seat cushion frame is connected to the sliding member in the rotating structure and rotates relative to the base when the sliding member rotates. The present invention installs the components included in the direction conversion structure in a concentrated area of the base, so that the cumulative error caused by the operation of each scattered part during the direction conversion is small, the direction conversion structure runs smoothly, the steering operation is continuous, and the user operation experience is improved. Description of the Drawings

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 Structural schematic diagram of the direction conversion structure provided by an embodiment of the present invention;

[0022] Figure 2 Structural schematic diagram of the direction conversion structure provided by an embodiment of the present invention after removing the seat cushion frame body;

[0023] Figure 3 Structural schematic diagram of the direction conversion structure provided by an embodiment of the present invention after removing the rotating seat cushion frame;

[0024] Figure 4 Structural schematic diagram of the fixing member in the direction conversion structure provided by an embodiment of the present invention;

[0025] Figure 5 Structural schematic diagram of the sliding member in the direction conversion structure provided by an embodiment of the present invention;

[0026] Figure 6 Another structural schematic diagram of the sliding member in the direction conversion structure provided by an embodiment of the present invention;

[0027] Figure 7 Structural schematic diagram of the sofa provided by an embodiment of the present invention;

[0028] Figure 8 Structural schematic diagram of the sofa provided by an embodiment of the present invention after the rotating seat cushion rotates counterclockwise by 45°;

[0029] Figure 9 Structural schematic diagram of the sofa provided by an embodiment of the present invention after the rotating seat cushion rotates counterclockwise by 45° and part of the rotating seat cushion structure is removed;

[0030] Figure 10 Structural schematic diagram of the sofa provided by an embodiment of the present invention after the rotating seat cushion rotates counterclockwise by 90°;

[0031] Figure 11 Structural schematic diagram of the sofa provided by an embodiment of the present invention after the rotating seat cushion rotates counterclockwise by 90° and part of the rotating seat cushion structure is removed.

[0032] Among them, the reference numerals in the drawings are as follows:

[0033] 10. Direction conversion structure; 100. Base; 101. Installation groove; 110. Base plate; 120. First support member; 130. Second support member; 131. Sub-support member; 1311. Frame limit ball structure; 200. Rotation structure; 210. Fixing member; 2101. First fixing plate; 21011. First sub-fixing plate; 21012. Second sub-fixing plate; 21013. Third sub-fixing plate; 2102. Track structure body; 21021. First track structure body; 21022. Second track structure body; 21023. Third track structure body; 2103. Second fixing plate; 2104. First connecting member; 2105. Second connecting member; 211. Moving track; 212. Rotation gear; 2121. First rotation gear; 2122. Second rotation gear; 220. Sliding member; 2201. Sliding member body; 2202. Limit movement structure; 2203. End movement structure; 2204. Frame connection structure; 2205. Wear-resistant structure; 300. Rotating seat cushion frame; 310. Seat cushion frame body; 320. Frame connecting member; 330. Wear-resistant member; 20. Rotating seat cushion; 201. Armrest part; 202. Seat cushion part; 30. Seat cushion; 40. Backrest. Detailed implementation mode

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] The direction terms mentioned in the present invention, such as "up", "down", "front", "rear", "left", "right", "inside", "outside", "side", etc., are only references to the directions in the attached drawings. Therefore, the direction terms used are for explaining and understanding the present invention, rather than for limiting the present invention. In addition, in the drawings, structures that are similar or the same are denoted by the same reference numerals.

[0036] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their combinations.

[0037] It should also be understood that the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0038] It should be further understood that the term "and / or" used in the specification of the present invention and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0039] Please refer to Figures 1 to 2 , Figure 1 which is a schematic structural diagram of the direction conversion structure provided for an embodiment of the present invention; Figure 2 is a schematic structural diagram of the direction conversion structure provided for an embodiment of the invention after removing the seat cushion frame body. As Figures 1 - 2 shown, the direction conversion structure 10 provided by the present invention includes: a base 100, a rotating structure 200 and a rotating seat cushion frame 300; the rotating structure 200 is arranged in the installation groove 101 on the base 100; the rotating structure 200 includes a fixing member 210 and a sliding member 220; the fixing member 210 is fixedly arranged in the installation groove 101 of the base 100; the first end of the sliding member 220 can move along the moving track 211 on the fixing member 210; the second end of the sliding member 220 moves synchronously along the inner wall of the fixing member 210 when the first end of the sliding member 220 moves and is adjusted to a variety of rotating gear states; the bottom of the rotating seat cushion frame 300 is connected to the sliding member 220 in the rotating structure 200 and rotates relative to the base 100 when the sliding member 220 rotates.

[0040] In this embodiment, when the sofa specifically adopts the direction conversion structure described in the present application, the rotating seat cushion can be fixedly connected to the rotating seat cushion frame 300, and several non-rotating seat cushions (which can be understood as fixed seat cushions and do not need to have the same rotating use requirements as the rotating seat cushion) and several backrests can be directly connected to the base 100. When the user needs to adjust the rotating gear of the rotating seat cushion, a force can be applied to rotate the rotating seat cushion and the rotating seat cushion frame 300, and drive both ends of the sliding member 220 to move within the fixing member 210. When the sliding member 220 drives the rotating seat cushion and the rotating seat cushion frame 300 to rotate relative to the base 100, it is also necessary to ensure that rotating the rotating seat cushion and the rotating seat cushion frame 300 will not cause soft leather material and fabric scraping interference with the seat cushions and backrests adjacent to the rotating seat cushion frame 300 on the base 100, so as to effectively protect other seat cushions and backrests.

[0041] In one embodiment, as Figures 1 - 2As shown, the base 100 includes a bottom plate 110, a first support member 120, and a second support member 130. Among them, the first support member 120 is provided on the lower end surface of the bottom plate 110 and is used as a bottom support structure. The second support member 130 is provided on the upper end surface of the bottom plate 110 and is arranged around the installation groove 101, and is used as a rotation support structure for the rotating seat cushion frame 300.

[0042] In this embodiment, as the support base in the direction conversion structure, the base 100 is specifically set to include a bottom plate 110, a first support member 120, and a second support member 130. More specifically, as a first embodiment of the bottom plate 110, the bottom plate 110 can adopt a plate structure with sufficient structural strength, and an installation groove 101 that does not completely penetrate the plate structure is opened on its upper end surface. As a second embodiment of the bottom plate 110, the bottom plate 110 can also adopt two plate structures, which are respectively denoted as an upper plate structure and a lower plate structure. The upper plate structure and the lower plate structure are fixedly connected by a plurality of connecting members, and a through-type installation groove 101 is opened on the upper plate structure. As a specific embodiment of the first support member 120, it can be set to include at least 2 support foot structures and can stably support the bottom plate 110.

[0043] In one embodiment, as Figures 1 - 3 shown, the second support member 130 includes a plurality of sub-support members 131, and a frame limit ball structure 1311 for limiting the rotating seat cushion frame 300 is provided on the upper end surface of each sub-support member 131.

[0044] In this embodiment, the second support member 130 serves as a support system for the rotating seat cushion frame 300. Its main function is to prevent the lower end surface of the rotating seat cushion frame 300 from directly contacting and rubbing against the bottom plate 110 when the rotating seat cushion frame 300 rotates relative to the fixed member 210 and the bottom plate 110 following the sliding member 220, that is, it reduces the contact area and reduces the rotation resistance. Specifically, a plurality of sub-support members 131 all adopt wear-resistant blocks, so that the upper end surface of each sub-support member 131 contacts and rubs against the lower end surface of the rotating seat cushion frame 300. Moreover, in order to improve the stability of the second support member 130 for the rotating seat cushion frame 300, taking the example that a square frame is provided on the lower end surface of the rotating seat cushion frame 300 and the four sides of the square frame are correspondingly provided with wear-resistant members (such as wear-resistant strips), at least four sub-support members 131 need to be correspondingly arranged around the installation groove 101, so that when the rotating seat cushion frame 300 rotates to any state relative to the bottom plate 110, at least three of the above four sub-support members 131 support the four wear-resistant members of the square frame.

[0045] More specifically, still referring to the example where a square frame is provided on the lower end surface of the above-mentioned rotating seat cushion frame 300, in order to enable the rotating seat cushion frame 300 to rotate at least 90° counterclockwise relative to its initial position, if the four sub-supporting members are sequentially denoted as the first sub-supporting member, the second sub-supporting member, the third sub-supporting member, and the fourth sub-supporting member in the clockwise direction starting from the upper left corner; the four wear-resistant members on the four sides of the square frame above the lower end surface of the rotating seat cushion frame 300 are sequentially denoted as the first wear-resistant member, the second wear-resistant member, the third wear-resistant member, and the fourth wear-resistant member in the clockwise direction starting from the uppermost side as the starting side, and bead grooves corresponding to the frame limiting bead structures 1311 of the respective sub-supporting members 131 are further provided on the lower end surfaces of 2 of the above 4 wear-resistant members (front and back or left and right). When the rotating seat cushion frame 300 stops at its initial position, the first end of the first wear-resistant member is supported by the first sub-supporting member and is clamped to the frame limiting bead structure on the first sub-supporting member, and the second end of the first wear-resistant member is supported by the second sub-supporting member and is clamped to the frame limiting bead structure on the second sub-supporting member; the first end of the second wear-resistant member is supported by the second sub-supporting member, and the second end of the second wear-resistant member is supported by the third sub-supporting member; the first end of the third wear-resistant member is supported by the third sub-supporting member and is clamped to the frame limiting bead structure on the third sub-supporting member, and the second end of the third wear-resistant member is supported by the fourth sub-supporting member and is clamped to the frame limiting bead structure on the fourth sub-supporting member; the first end of the fourth wear-resistant member is supported by the fourth sub-supporting member, and the second end of the fourth wear-resistant member is supported by the first sub-supporting member.

[0046] After that, when the rotating seat cushion frame 300 starts to rotate from the initial position and has completed a 90° rotation counterclockwise relative to its initial position (it will at least pass through a transitional state of 45° relative to its initial position in the middle and reference can be made to Figure 8 , the state after the rotating seat cushion frame 300 starts to rotate from the initial position and has completed a 90° rotation counterclockwise relative to its initial position can be referred to Figure 10) At this time, it is a frame limit ball structure where the first end of the first wear-resistant member is supported by the fourth sub-support member and clamped to the fourth sub-support member, and the second end of the first wear-resistant member is supported by the first sub-support member and clamped to the frame limit ball structure on the first sub-support member; the first end of the second wear-resistant member is supported by the first sub-support member, and the second end of the second wear-resistant member is supported by the second sub-support member; the first end of the third wear-resistant member is supported by the second sub-support member and clamped to the frame limit ball structure on the second sub-support member, and the second end of the third wear-resistant member is supported by the third sub-support member and clamped to the frame limit ball structure on the third sub-support member; the first end of the fourth wear-resistant member is supported by the third sub-support member, and the second end of the fourth wear-resistant member is supported by the fourth sub-support member. It can be seen that by adopting the above support member structure, not only the stable support of the rotating seat cushion frame is realized, but also the lower end surface of the rotating seat cushion frame is effectively prevented from directly contacting and rubbing against the bottom plate, thereby prolonging the service life of the rotating seat cushion frame and the bottom plate.

[0047] In one embodiment, as Figures 1 - 2 shown, the rotating seat cushion frame 300 includes a seat cushion frame body 310, a frame connecting member 320, and a wear-resistant member 330; the frame connecting member 320 is arranged on the lower end surface of the seat cushion frame body 310 and is connected to the sliding member 220; the wear-resistant member 330 is arranged on the lower end surface of the seat cushion frame body 310 and is supported by the second support member 130 when the seat cushion frame body 310 rotates following the seat cushion frame body.

[0048] In this embodiment, still referring to the example where a square frame is arranged on the lower end surface of the above-mentioned rotating seat cushion frame 300, the wear-resistant member 330 specifically includes a first wear-resistant member, a second wear-resistant member, a third wear-resistant member, and a fourth wear-resistant member. Moreover, in order to enable the wear-resistant system composed of the above four wear-resistant members to better assist the sliding member 220 to switch the rotation gear, bead slots adapted to the frame limit ball structure can be arranged at both ends of the first wear-resistant member and the third wear-resistant member. When the square frame on the lower end surface of the rotating seat cushion frame 300 rotates a certain angle (such as the example of rotating 90° counterclockwise in the above example), the bead slots at both ends of the first wear-resistant member and the third wear-resistant member can be clamped to the corresponding frame limit ball structures on the square frame. When the user rotates the armrest to drive the seat frame synchronously, the horizontal force causes the limit ball structure to retract, and the rotating seat cushion frame can be rotated. Moreover, the rotating seat cushion frame 300 is specifically connected to the upper end surface of the sliding member 220 through the frame connecting member 320, so that when the sliding member 220 rotates relative to the inner wall of the fixed member 210 to switch the rotation gear, the entire rotating seat cushion frame can be driven to rotate synchronously.

[0049] In one embodiment, as Figure 2 and Figure 4As shown, the fixing member 210 includes a first fixing plate 2101, a track structure body 2102, and a second fixing plate 2103 arranged in sequence from bottom to top; the first fixing plate 2101, the track structure body 2102, and the second fixing plate 2103 are fixedly connected by a first connecting member 2104; the moving track 211 is provided on the first fixing plate 2101, or the sandwich space between the first fixing plate 2101 and the second fixing plate 2103 forms the moving track 211; the first fixing plate 2101 and the base 100 are fixedly connected by a second connecting member 2105.

[0050] In this embodiment, as the first preferred embodiment of the fixing member 210, the first fixing plate 2101, the track structure body 2102, and the second fixing plate 2103 can be separately processed and manufactured first, and then the first fixing plate 2101, the track structure body 2102, and the second fixing plate 2103 are fixedly connected by a first connecting member 2104 (such as specifically using fixing screws, etc.) to form a complete fixing member 210. Moreover, the moving track 211 can also be provided on the first fixing plate 2101 (specifically refer to Figure 4 the position shown), and the moving track 211 is used as the track for guiding the movement of the first end of the sliding member 220; alternatively, the sandwich space between the first fixing plate 2101 and the second fixing plate 2103 forms the moving track 211, that is, a track for guiding the movement of the first end of the sliding member 220 is not separately provided on the first fixing plate 2101 (this embodiment is not shown in Figure 4 . When any of the above embodiments is adopted, it is defined that the first end of the sliding member 220 can move along the moving track 211 on the fixing member 210 and cannot exceed the movement stroke defined by the moving track 211; it is also defined that the second end of the sliding member 220 can move along the inner wall of the track structure body 2102. With the fixing member having the above structure, not only can the movement stroke of the first end of the sliding member be limited by the moving track, but also the movement stroke of the second end of the sliding member can be limited by the inner wall of the track structure body.

[0051] In specific implementation, there are also various other embodiments of the fixing member 210. In other embodiments, the integral forming method and connection method of the three main components of the fixing member 210, namely the first fixing plate 2101, the track structure body 2102, and the second fixing plate 2103, are different from those of the first embodiment of the fixing member 210. For example, in the second embodiment of the fixing member 210, the first fixing plate 2101 and the track structure body 2102 are integrally formed; the integrally formed first fixing plate 2101 and the track structure body 2102 are fixedly connected to the second fixing plate 2103 through a third connecting member; the moving track 211 is provided on the first fixing plate 2101, or the sandwich space between the first fixing plate 2101 and the second fixing plate 2103 forms the moving track 211. Another example is that in the third embodiment of the fixing member 210, the second fixing plate 2103 and the track structure body 2102 are integrally formed; the integrally formed second fixing plate 2103 and the track structure body 2102 are fixedly connected to the first fixing plate 2101 through a fourth connecting member; the moving track 211 is provided on the first fixing plate 2101, or the sandwich space between the first fixing plate 2101 and the second fixing plate 2103 forms the moving track 211. If any one of the above-mentioned multiple embodiments is adopted for the fixing member 210, the second end of the sliding member 220 can move synchronously along the inner wall of the fixing member 210 when the first end of the sliding member 220 moves and can be adjusted to various rotation gear states. It should be noted that when any one of the above-mentioned multiple embodiments is adopted for the fixing member 210, the moving track 211 can be arbitrarily selected from embodiments such as a fully penetrating groove, a non-penetrating groove, or a moving guide rail.

[0052] Specifically, as a specific embodiment of the fixing member 210, as Figure 4 shown, the first fixing plate 2101 includes a first sub-fixing plate 21011, a second sub-fixing plate 21012, and a third sub-fixing plate 21013 that are integrally formed and arranged in a clockwise direction around a ring; a linear strip-shaped moving track 211 is provided on the third sub-fixing plate 21013; wherein, the first end of the moving track 211 is located at the center of the fixing plate of the first fixing plate 2101, and the second end of the moving track 211 is located at the end of the third sub-fixing plate 21013 that is far from the center of the fixing plate. Among them, Figure 4 the three dashed lines in are for schematically distinguishing the dividing lines between the first sub-fixing plate 21011, the second sub-fixing plate 21012, and the third sub-fixing plate 21013 in pairs, which do not actually exist in specific implementation, and the first sub-fixing plate 21011, the second sub-fixing plate 21012, and the third sub-fixing plate 21013 are actually an integrally formed overall structure. Through the above specific structural settings, referring again to Figure 4, the area corresponding to the first sub-fixed plate 21011 can be regarded as the first rotation gear 2121, and the area corresponding to the second sub-fixed plate 21012 can be regarded as the second rotation gear 2122. With the first fixed plate having the above structure, at least two rotation gears can be achieved on the fixing member. In specific implementation, the total number of sub-fixed plates included in the first fixed plate 2101 is not limited to 3, and the total number of corresponding rotation gears on the first fixed plate 2101 is not limited to 2. It can also be that the total number of sub-fixed plates is greater than 3, and the total number of rotation gears is greater than 2 (generally, the total number of rotation gears can be calculated by subtracting 1 from the total number of sub-fixed plates).

[0053] The part of the track structure body 2102 located on the first sub-fixed plate 21011 is the first track structure body 21021, and the first track structure body 21021 is a U-shaped track structure body with an opening facing the central axis of the fixed plate where the center of the fixed plate is located; the part of the track structure body 2102 located on the second sub-fixed plate 21012 is the second track structure body 21022, and the second track structure body 21022 is a U-shaped track structure body with an opening facing the central axis of the fixed plate where the center of the fixed plate is located; the part of the track structure body 2102 located on the third sub-fixed plate 21013 is the third track structure body 21023, and the third track structure body 21023 is a U-shaped track structure body with an opening facing the central axis of the fixed plate where the center of the fixed plate is located. Referring to the way the first fixed plate 2101 is divided into 3 sub-fixed plates, the track structure body 2102 is also divided into 3 track structure bodies. When the above three track structure bodies are all U-shaped track structure bodies with an opening facing the central axis of the fixed plate where the center of the fixed plate is located, the composed track structure body 2102 can be regarded as a star structure similar to "Y". Among them, the inner wall of the first track structure body 21021 is used to guide the second end of the sliding member 220 to move in the corresponding area of the first rotation gear 2121, and the inner wall of the second track structure body 21022 is used to guide the second end of the sliding member 220 to move in the corresponding area of the second rotation gear 2122. With the track structure body having the above structure and the arc structure of the inner wall, it can effectively ensure the smoothness of the operation when the sliding member switches the rotation gear, and improve the user operation experience.

[0054] In an embodiment, such as Figure 2 , Figure 5 and Figure 6As shown, the sliding member 220 includes a sliding member body 2201, a limiting and moving structure 2202, an end movement structure 2203, and a frame connection structure 2204; the limiting and moving structure 2202 is fixedly connected to the bottom of the first end of the sliding member body 2201, and the limiting and moving structure 2202 is adapted to the moving track 211 and is movably connected to the moving track 211; the frame connection structure 2204 is arranged on the top of the sliding member body 2201 and is connected to the rotating seat cushion frame 300; the end movement structure 2203 is arranged at the second end of the sliding member body 2201.

[0055] In this embodiment, if the moving track 211 is provided at the bottom of the fixing member 210, more specifically, when it is a full-through groove in a straight strip shape as shown in Figure 4 a limiting and moving structure 2202 can also be fixedly connected to the bottom of the first end of the sliding member body 2201. If it is a limiting pin or the like, the sliding member 220 can be movably connected to the moving track 211 through the limiting and moving structure 2202. After the track stroke of the moving track 211 is fixed, the movement stroke of the first end of the sliding member body 2201 is also fixed, and the rotation operation will not cause cumulative errors or cause relatively small cumulative errors. Among them, when the specific structure of the rotating seat cushion frame is referred to Figures 1 - 2 , and the rotating seat cushion frame 300 includes a seat cushion frame body 310, a frame connecting member 320, and a wear-resistant member 330, the frame connection structure 2204 is arranged on the top of the sliding member body 2201 and is connected to the frame connecting member 320.

[0056] Still referring to the example of Figure 4 , if the plurality of rotating gears 212 included in the fixing member 210 more specifically include a first rotating gear 2121 and a second rotating gear 2122, when the sliding member 220 drives the rotating seat cushion frame 300 to rotate from the second rotating gear 2122 and stops at the first rotating gear 2121, the sliding member 220 drives the rotating seat cushion frame 300 to rotate 90° counterclockwise relative to the base 100; when the sliding member 220 drives the rotating seat cushion frame 300 to rotate from the first rotating gear 2121 and stops at the second rotating gear 2122, the sliding member 220 drives the rotating seat cushion frame 300 to rotate 90° clockwise relative to the base 100.

[0057] Among them, when the slider 220 rotates from the first rotation gear 2121 stopped at the fixed member 210 to the second rotation gear 2122 and stops, the first end of the slider 220 needs to slide from the first end of the moving track 211 to the second end of the moving track 211. During this movement process, there will be an intermediate transition switching state where the first end of the slider 220 is located at the second end of the moving track 211 and the second end of the slider 220 is close to the first end of the moving track 211. There will also be an intermediate movement state where the first end of the slider 220 is located between the first end and the second end of the moving track 211 and the second end of the slider 220 is located closer to the first rotation gear 2121 or the second rotation gear 2122. In order to make the second end of the slider 220 move more smoothly along the inner wall of the track structure body 2102, the inner wall of the track structure body between the first rotation gear 2121 and the second rotation gear 2122 on the track structure body 2102 can be in an arc structure or a right-angle corner structure. The above examples are only for illustration and do not limit that only the arc structure or the right-angle corner structure can be adopted. Other structures that can ensure the smooth movement of the second end of the slider 220 can also be adopted. When the above structure ensures the operation smoothness of the above-described intermediate movement state and intermediate transition switching state, it can effectively ensure the operation smoothness of the slider when switching the rotation gear, and also improves the user operation experience.

[0058] Specifically, a wear-resistant structure 2205 (including a plurality of wear-resistant pieces) or a bottom rolling structure (not shown, including a plurality of bottom balls) is further provided on the lower end surface of the slider body 2201. Through the wear-resistant structure 2205, the contact surface between the lower end surface of the slider body 2201 and the fixed member 210 is not a direct surface contact, which effectively protects both the lower end surface of the slider body 2201 and the fixed member 210, and improves the service life of the slider and the fixed member.

[0059] In one embodiment, as Figure 5 and Figure 6 shown, the end movement structure 2203 is a non-roller structure, a single-roller structure or a multi-roller structure; when the end movement structure is a non-roller structure, the non-roller structure is integrally formed with the slider body or is an assembly; when the end movement structure 2203 is a single-roller structure, the single-roller structure is connected to the second end of the slider body 2201 and can roll along the inner wall of the fixed member 210; when the end movement structure 2203 is a multi-roller structure, the multi-roller structure is arranged on the outer edge of the second end of the slider body 2201 and can roll along the inner wall of the fixed member 210.

[0060] In this embodiment, in order to enable the sliding member 220 to move smoothly within the fixing member 210 and stop at multiple rotation positions 212 on the fixing member 210, the sliding member 220 may be provided with at least the above structure. When the inner wall of the fixing member 210 is specifically arranged in an arc structure, the first method is that the end movement structure 2203 adopts a single roller structure, and the single roller structure is sleeved on the roller rotating shaft arranged at the second end of the sliding member body 2201, so that the single roller structure can move along the inner wall of the fixing member 210 and the friction mode between the two is rolling friction; the second method is to adopt a multi-roller structure, that is, the outer edge of the second end of the sliding member body 2201 is arranged in an arc structure and a plurality of small rollers are arranged along the arc structure (at this time, the diameter of the small roller is smaller than the diameter of the above single roller structure), so that the second end of the sliding member body 2201 can move smoothly along the inner wall of the fixing member 210, and the friction mode between the two is rolling friction. The third method is that the end movement structure 2203 can also be a non-roller structure (i.e., self-lubricating friction form), and the non-roller structure is integrally formed with the sliding member body or is an assembly. Of course, in specific implementation, it is not limited to the above specific examples, as long as the end movement structure 2203 can realize moving along the inner wall of the fixing member 210. The end movement structure adopts the above structure, which effectively protects both the second end of the sliding member body 2201 and the inner wall of the fixing member 210, and extends the service life of the sliding member and the fixing member.

[0061] It can be seen that the components included in the sliding member and the fixing member are installed concentratedly, and the cumulative error caused during the direction conversion operation of the direction conversion structure is small, making the direction conversion operation more continuous and smooth, and improving the user operation experience.

[0062] The embodiment of the present invention also provides a sofa. As Figure 7 shown, it includes the direction conversion structure 10 described in any of the foregoing embodiments, and further includes a rotating seat cushion 20 connected to the rotating seat cushion frame 300 in the direction conversion structure 10, and a plurality of seat cushions 30 and a plurality of backrests 40 arranged on the base 100 in the direction conversion structure 10; wherein, when the rotating seat cushion 20 rotates relative to the base 100, it does not interfere or rub against the adjacent seat cushion soft leather material and fabric.

[0063] In this embodiment, reference can also be made to Figures 1 - 6, when the sofa specifically adopts the direction conversion structure 10 described in the present application, the rotating cushion 20 can be fixedly connected to the rotating cushion frame 300, and several cushions 30 that do not need to be rotated (which can be understood as fixed cushions and do not have the same rotation usage requirements as the rotating cushion) and several backrests 40 can be directly connected to the base 100. When the user needs to adjust the rotation gear of the rotating cushion 20, a horizontal force can be applied to rotate the rotating cushion 20 first, and then the rotating cushion 20 and the rotating cushion frame 300 can be rotated, driving both ends of the sliding member 220 to move within the fixing member 210. When the sliding member 220 drives the rotating cushion and the rotating cushion frame 300 to rotate relative to the base 100, it is also necessary to ensure that rotating the rotating cushion and the rotating cushion frame 300 will not cause soft leather material and fabric scraping interference with the cushions and backrests adjacent to the rotating cushion frame 300 on the base 100, so as to effectively protect other cushions and backrests.

[0064] Among them, an avoidance space is provided at the bottom of the backrest 40 on the base 100 that aligns with the rotating cushion 20. For example, the bottom thickness of the backrest 40 is set to be less than the thickness of other parts, and the height corresponding to the avoidance space is slightly greater than the height of the rotating cushion. Through the setting of this avoidance space, the backrest will not interfere with the rotation process of the rotating cushion, effectively protecting the leather surface of the backrest.

[0065] In an embodiment, as Figure 7 shown, the rotating cushion 20 includes an armrest portion 201 and a cushion portion 202, and the armrest portion 201 is connected to the cushion portion 202.

[0066] In this embodiment, if only one rotating cushion frame 300 is provided in the direction conversion structure 10 of the sofa and one rotating cushion 20 is fixed on it, and at least one cushion 30 is provided on one side of the rotating cushion 20, at least two backrests 40 can also be provided. The first backrest is connected to the base 100 and aligns with the rotating cushion 20, and the second backrest is connected to the base 100 and aligns with the cushion 30.

[0067] Among them, in order to achieve the multi-function of the sofa, the rotating cushion 20 can be set to at least include an armrest portion 201 and a cushion portion 202, and the armrest portion 201 is connected to the cushion portion 202. When the rotating cushion 20 is connected to the rotating cushion frame 300, when the rotating cushion 20 is in its initial position (as Figure 7 shown), they are arranged in the order of the armrest portion 201, the cushion portion 202, and the cushion 30 in sequence, and the axes of the three are on the same straight line, and the sliding member 220 is in the second rotation gear 2122 (for reference, see Figure 2), in this state, when the user sits on the seat cushion part 202, the armrest part 201 can be used as an armrest to place the user's arm. When the user applies a horizontal force to the rotating seat cushion 20, it drives the sliding member 220 to rotate along the inner wall of the fixed member 210, thereby driving the rotating seat cushion frame 300 to rotate counterclockwise by 45° relative to the base 100. At this time, the angle between the axis of the rotating seat cushion 20 (i.e., the line connecting the axes of the armrest part 201 and the seat cushion part 202) and the axis of the adjacent seat cushion 30 is 45°, and the first end of the sliding member 220 is located at the second end of the moving track 211 and the second end of the sliding member 220 is close to the middle transition switching state of the first end of the moving track 211 (reference can be made to Figure 4 and Figure 9 ). This intermediate transition state is not used as the final use state. When the user applies a horizontal force to the rotating seat cushion 20, it drives the sliding member 220 to rotate along the inner wall of the fixed member 210, thereby driving the rotating seat cushion frame 300 to rotate counterclockwise by 90° relative to the base 100. At this time, the angle between the axis of the rotating seat cushion 20 (i.e., the line connecting the axes of the armrest part 201 and the seat cushion part 202) and the axis of the adjacent seat cushion 30 is 90°, and the sliding member 220 is in the first rotation gear 2121 (reference can be made to Figure 4 、 Figure 10 and Figure 11 ). At this time, the armrest part 201 of the rotating seat cushion 20 can be used as a footrest for the user lying on the rotating seat cushion 20. Specifically, the armrest structure frame in the armrest part 201 is connected to the seat cushion structure frame in the seat cushion part 202 in a hinged manner and can flexibly adjust the angle gear. When the armrest part 201 is used as an armrest or a footrest, the user can adjust the angle gear between the armrest structure frame and the seat cushion structure frame according to the actual use requirements.

[0068] In some embodiments, as shown in Figure 1 、 Figure 2 and Figure 7 , the seat cushion part 202 is connected to the rotating seat cushion frame 300 in the direction conversion structure 10, and the rotating seat cushion 20 rotates relative to the base 100 when the rotating seat cushion frame 300 follows the sliding member 220 to rotate, so as to adjust the rotation gear of the rotating seat cushion 20 relative to the base 100.

[0069] In this embodiment, the bottom of the seat cushion part 202 is connected to the upper end surface of the seat cushion frame body 310 in the rotating seat cushion frame 300. Also, since the frame connecting piece 320 on the lower end surface of the seat cushion frame body 310 is connected to the sliding piece 220, when the sliding piece 220 rotates along the inner wall of the fixing piece 210 to adjust the selection gear of the rotating seat cushion, the rotating seat cushion 20 rotates relative to the base 100 when the rotating seat cushion frame 300 follows the sliding piece 220 to rotate, so as to adjust the rotation gear of the rotating seat cushion 20 relative to the base 100.

[0070] In summary, the direction conversion structure and the sofa provided by the present invention, the direction conversion structure includes a base, a rotating structure and a rotating seat cushion frame; the rotating structure is arranged in the installation groove on the base; the rotating structure includes a fixing piece and a sliding piece; the fixing piece is fixedly arranged in the installation groove of the base; the first end of the sliding piece can move along the moving track on the fixing piece; the second end of the sliding piece synchronously moves along the inner wall of the fixing piece when the first end of the sliding piece moves and is adjusted to a variety of rotating gear states; the bottom of the rotating seat cushion frame is connected to the sliding piece in the rotating structure and rotates relative to the base when the sliding piece rotates. By installing the components included in the direction conversion structure in a concentrated area of the base, the present invention makes the cumulative error caused by the operation of each scattered part during the direction conversion smaller, the direction conversion structure runs smoothly, the steering operation is continuous, and the user operation experience is improved.

[0071] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or replacements, and these modifications or replacements should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A direction conversion structure, characterized in that: It includes a base, a rotating structure and a rotating seat cushion frame; the rotating structure is arranged in a mounting groove on the base; the rotating structure includes a fixing part and a sliding part; the fixing part is fixed in the mounting groove of the base; the first end of the sliding part can move along the moving track on the fixing part; the second end of the sliding part synchronously moves along the inner wall of the fixing part and is adjusted to a variety of rotation gear states when the first end of the sliding part moves; the bottom of the rotating seat cushion frame is connected to the sliding part in the rotating structure, and rotates relative to the base when the sliding part rotates.

2. The direction conversion structure according to claim 1, characterized in that: The base includes a bottom plate, a first support member and a second support member; wherein the first support member is arranged on the lower end surface of the bottom plate and is used as a bottom support structure; the second support member is arranged on the upper end surface of the bottom plate and is arranged around the mounting groove, and is used as a rotating support structure of the rotating seat cushion frame.

3. The direction conversion structure according to claim 2, characterized in that: The second support member includes a plurality of sub-support members, and a frame limiting bead structure for limiting the position of the rotating seat cushion frame is provided on the upper end surface of each sub-support member.

4. The direction conversion structure according to claim 2, characterized in that: The rotating seat cushion frame includes a seat cushion frame body, a frame connecting member and a wear-resistant member; the frame connecting member is arranged on the lower end surface of the seat cushion frame body and is connected to the sliding member; the wear-resistant member is arranged on the lower end surface of the seat cushion frame body and is supported by the second supporting member when the seat cushion frame body rotates with the seat cushion frame body.

5. The direction conversion structure according to any one of claims 1 to 4, characterized in that: The fixing member includes a first fixing plate, a track structure and a second fixing plate which are arranged in sequence from bottom to top; the first fixing plate, the track structure and the second fixing plate are fixedly connected by a first connecting member; the first fixing plate is provided with the movable track, or the interlayer space between the first fixing plate and the second fixing plate forms the movable track; the first fixing plate and the base are fixedly connected by a second connecting member.

6. The direction conversion structure according to claim 5, characterized in that: The sliding member includes a sliding member body, a limiting movement structure, an end movement structure and a frame connection structure; the limiting movement structure is fixedly connected to the bottom of the first end of the sliding member body, and the limiting movement structure is adapted to the moving track and can be movably connected to the moving track; the frame connection structure is arranged at the top of the sliding member body and is connected to the rotating seat cushion frame; the end movement structure is arranged at the second end of the sliding member body.

7. The direction conversion structure according to claim 6, characterized in that: The end movement structure is a rollerless structure, a single roller structure or a multi-roller structure; if the end movement structure is a rollerless structure, the rollerless structure is integrally formed with the sliding member body or is an assembly; if the end movement structure is a single roller structure, the single roller structure is connected to the second end of the sliding member body and can roll along the inner wall of the fixing member; if the end movement structure is a multi-roller structure, the multi-roller structure is arranged on the outer edge of the second end of the sliding member body and can roll along the inner wall of the fixing member.

8. A sofa, characterized in that: It includes the direction conversion structure as described in any one of claims 1 to 7, and also includes a rotating cushion connected to a rotating cushion frame in the direction conversion structure, and a plurality of cushions and a plurality of backrests arranged on a base in the direction conversion structure; wherein, when the rotating cushion rotates relative to the base, it does not interfere with or scratch adjacent soft cushion leather or fabric.

9. The sofa according to claim 8, characterized in that: The rotating seat cushion comprises an armrest portion and a seat cushion portion, wherein the armrest portion is connected to the seat cushion portion.

10. The sofa according to claim 9, characterized in that: The cushion portion is connected to the rotating cushion frame in the direction conversion structure, and the rotating cushion rotates relative to the base when the rotating cushion frame rotates following the sliding member to adjust the rotation gear of the rotating cushion relative to the base.

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