A self-positioning hinge support structure

Abstract

The present invention discloses a self-positioning hinge support structure, including a fixed part and a movable part, with a hinge part connected therebetween, the hinge part including a hinge block and two self-locking hinge mechanisms, so that the movable part is supported on the fixed part and the movable part is allowed to rotate around the hinge block and the fixed part respectively; the self-locking hinge mechanism includes a sleeve and a rotating shaft, the sleeve includes at least one elastic ring, the elastic ring is tightly embraced on the rotating shaft for self-locking; a rotation limiting structure is also provided between the hinge block and the fixed part. Compared with the prior art, the present invention has the following beneficial effects: the movable part is supported on the fixed part by the self-locking hinge mechanism, and the self-rotation of the movable part and the rotation and angular positioning relative to the fixed part are realized, and the movable part can be continuously adjusted within the rotation range, and has the advantages of simple structure, convenient adjustment, and easy use.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical rotation connection, and in particular relates to a self-positioning hinge support structure. Background Art

[0002] Rotational connection is a common connection method. In some products, a combination of rotational connection and locking mechanism is used to achieve relative rotation adjustment and positioning between two components. For example, the seat back and the seat frame are rotationally connected through a recliner, and the adjuster can be self-locking. When the backrest is adjusted to a certain angle, it is locked with the seat frame to maintain the angle. In order to achieve the rotation adjustment function and withstand large torque, the recliner module is relatively complex. In some scenarios, the use of rotational connection and locking mechanism is too complicated and takes up more installation space, affecting the design and installation of other components. In addition, for situations where the rotational connection is not subjected to much force, it is not necessary to set up a locking mechanism, which will lead to increased costs. For example, in order to improve user comfort, the seat headrest is often designed to be able to rotate in the vertical plane for angle adjustment. However, this type of angle adjustment structure in the prior art is relatively complex. When there is more than one rotational connection structure in a limited space, it is neither economical nor compact to design locking devices separately. Summary of the invention

[0003] In view of this, the present invention provides a self-positioning hinge support structure.

[0004] The technical solution is as follows:

[0005] A self-positioning hinge support structure comprises a fixed part and a movable part, and a hinge part is connected between the two. The key point is that the hinge part comprises a hinge block and two self-locking hinge mechanisms, and the self-locking hinge mechanisms are respectively a first self-locking hinge mechanism and a second self-locking hinge mechanism, wherein the first self-locking hinge mechanism connects the fixed part and the hinge block, and the second self-locking hinge mechanism connects the movable part and the hinge block, so that the movable part is supported on the fixed part and the movable part is allowed to rotate around the hinge block and the fixed part respectively;

[0006] The self-locking hinge mechanism comprises a shaft sleeve and a rotating shaft, wherein the shaft sleeve comprises at least one elastic ring, and the elastic ring is tightly embraced on the rotating shaft for self-locking;

[0007] A rotation limiting structure is also provided between the hinge block and the fixing portion.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: the movable part is supported on the fixed part through a self-locking hinge mechanism, and the self-rotation of the movable part and the rotation and angle positioning relative to the fixed part are realized, and it can be continuously adjusted within the rotation range, with the advantages of simple structure, convenient adjustment and easy use. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the first viewing angle of the present invention;

[0010] Figure 2 It is a structural schematic diagram of the second viewing angle of the present invention;

[0011] Figure 3 for Figure 2 Middle AA section;

[0012] Figure 4 for Figure 2 Right view of;

[0013] Figure 5 for Figure 4 Middle BB section;

[0014] Figure 6 It is a structural schematic diagram of the rotating shaft fixing seat;

[0015] Figure 7 It is a structural schematic diagram of the hinge part;

[0016] Figure 8 for Figure 7 Left view of

[0017] Fig. 9 for Figure 8 CC cross-section diagram. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with embodiments and drawings.

[0019] like Figures 1 to 4 As shown, a self-positioning hinge support structure includes a fixed part 200 and a movable part 300, which are connected by a hinge part, and the hinge part includes a hinge block 110 and two self-locking hinge mechanisms, and the self-locking hinge mechanisms are respectively a first self-locking hinge mechanism and a second self-locking hinge mechanism, wherein the first self-locking hinge mechanism connects the fixed part 200 and the hinge block 110, and the second self-locking hinge mechanism connects the movable part 300 and the hinge block 110, so that the movable part 300 is supported on the fixed part 200, and the movable part 300 is allowed to rotate around the hinge block 110 and the fixed part 200 respectively.

[0020] The self-locking hinge mechanism includes a shaft sleeve 120 and a rotating shaft. The rotating shaft of the first self-locking hinge mechanism is a first rotating shaft 210, which is fixedly arranged on the fixed part 200; the rotating shaft of the second self-locking hinge mechanism is a second rotating shaft 310, which is fixedly arranged on the movable part 300, and the axis lines of the two rotating shafts are parallel to each other. The shaft sleeves 120 of the first self-locking hinge mechanism and the second self-locking hinge mechanism are both fixedly connected to the hinge block 110, and the two shaft sleeves 120 are respectively connected to two opposite surfaces of the hinge block 110.

[0021] The fixing portion 200 includes two rotating shaft fixing seats 220 . The two rotating shaft fixing seats 220 are arranged opposite to each other, and the two rotating shaft fixing seats 220 are connected through the first rotating shaft 210 .

[0022] like Figure 4 and 6 The shaft fixing seat 220 includes a mounting plate 221 and a shaft fixing block. The shaft fixing block is integrally formed with a mounting plate 221 on both sides. The two mounting plates 221 are located on both sides of the first shaft 210. Both ends of the first shaft 210 are fixedly connected to the corresponding shaft fixing blocks.

[0023] The thickness of the mounting plate 221 is smaller than that of the shaft fixing block. One side of the mounting plate 221 is a mounting plane 228, and the mounting planes 228 of the two shaft fixing seats 220 are oriented in the same direction and are parallel to the axis of the first shaft 210. A reinforcing rib 225 is provided between the other side of the mounting plate 221 and the shaft fixing block.

[0024] like Figure 3 and 6 The rotating shaft fixing block includes an outer cylinder 222 and an inner cylinder 223 which are arranged concentrically, and at least two supporting ribs 224 are radially connected between the outer cylinder 222 and the inner cylinder 223. All the supporting ribs 224 are evenly distributed in an annular direction around the inner cylinder 223. The gaps between the supporting ribs 224 form weight-reducing holes, and the weight-reducing holes are opened on the side of the rotating shaft fixing block which is away from the first rotating shaft 210.

[0025] The inner ends of the outer cylinder 222 and the inner cylinder 223 are connected with inner support blocks 226 extending inwardly, and the cross section of the inner support block 226 is smaller than the cross section of the outer cylinder 222. Both ends of the first rotating shaft 210 are fixedly inserted in the corresponding inner support blocks 226, respectively.

[0026] A reinforcing rib 225 is provided between the two ends of the outer cylinder 222 and the mounting plate 221 , and the height of the reinforcing rib 225 gradually decreases from the outer cylinder 222 to the mounting plate 221 . The reinforcing rib 225 and the outer wall of the outer cylinder 222 are smoothly connected.

[0027] like Figures 7 to 9 Each of the sleeves 120 includes at least two elastic rings 121, all of which are arranged on the same center line and arranged in parallel along the length direction of the corresponding shaft, and any two adjacent elastic rings 121 in the same sleeve 120 are abutted against each other to form the sleeve 120. The elastic rings 121 are tightly attached to the shaft to be self-locking.

[0028] The elastic ring 121 is further connected to an extension section 122 . The extension section 122 is arranged along the radial direction of the rotating shaft, is arranged in parallel with the extension section 122 of the same sleeve 120 , and is connected to the hinge block 110 .

[0029] The elastic ring 121 and the extension section 122 are formed by bending the same steel wire, wherein the steel wire section wound into the elastic ring 121 is circumferentially bent so that its two ends are close to each other so as to be tightly held on the corresponding rotating shaft. The extension section 122 is bent at one end corresponding to the hinge block 110 to form a bent section 123, and the bent section 123 is embedded in the hinge block 110.

[0030] The steel wire segment wound into the elastic ring 121 surrounds the rotating shaft for more than one circle, and may not exceed two circles. The purpose of such a design is that when the elastic ring 121 is subjected to force and undergoes radial or circumferential deformation, since the steel wire segment surrounds the rotating shaft for more than one circle, deformation redundancy can be provided to prevent the elastic ring 121 from detaching from the rotating shaft.

[0031] In this embodiment, the hinge block 110 is in the shape of a rectangular plate, and the two sleeves 120 are respectively located outside the two end surfaces of the hinge block 110. The hole center lines of the two sleeves 120 are parallel to the side of the hinge block 110, and all the extension sections 122 are also parallel to the side of the hinge block 110. The bending sections 123 are located in the same plane and are in the shape of a "7". All the bending sections 123 connected to the same sleeve 120 are arranged in parallel in the hinge block 110, and the bending section 123 and the axis center line of the rotating shaft are located in the same plane. All the bending sections 123 are arranged in parallel in the mold and are formed into the hinge block 110 through injection molding.

[0032] like Figure 5 and 6The hinge block 110 is provided with a decorative shell 130 outside, and the decorative shell 130 includes an integrally formed hinge block decorative cover 131 and a hinge decorative cover 132, wherein the hinge block decorative cover 131 covers the side of the hinge block 110 and is connected thereto, the hinge block decorative cover 131 extends toward the shaft sleeve 120 and is connected to the hinge decorative cover 132, and the hinge decorative cover 132 is in an arc shape, and the hinge decorative cover 132 covers the shaft sleeve 120 and is separated therefrom.

[0033] The decorative housing 130 has two pieces, and the two decorative housings 130 are connected to each other by buckling, so as to shield the hinge block 110 and the shaft sleeve 120 from both sides. The hinge block decorative cover 131 is in the shape of a flat plate, and the hinge block decorative cover 131 faces the corresponding side of the hinge block 110. The hinge block decorative cover 131 extends toward the hinge decorative cover 132 and shields the extension section 122. The edge of the hinge block decorative cover 131 is connected to the straight edge of the hinge decorative cover 132.

[0034] All the bending sections 123 are arranged in the central area of ​​the hinge block 110, and a clearance hole 111 is penetrated in the edge area of ​​the hinge block 110. A buckle 133 is provided on the decorative shell 130 facing the clearance hole 111, and the buckles 133 of the two decorative shells 130 are relatively penetrated in the clearance hole 111 and are clamped and connected.

[0035] like Figure 1 , 2 4, a limit block 227 is provided on the inner support block 226, the limit block 227 is close to the end of the first rotating shaft 210, and the limit block 227 is provided with a limit surface parallel to the axis of the first rotating shaft 210. The limit block 227 and the hinge decorative cover 132 close thereto form a rotation limit structure, and the limit is achieved when the edge of the corresponding hinge decorative cover 132 abuts against the limit surface.

[0036] The decorative shell 130 not only serves to cover, decorate and protect the hinged portion, but also cooperates with the limiting block 227 to serve as a limit.

[0037] In this embodiment, the structural characteristics of the sleeve 120 enable the movable part 300 to rotate around the first rotating shaft 210 or the second rotating shaft 310 when subjected to a certain magnitude of torque or thrust, if the torque or thrust can overcome the friction between the sleeve 120 and the first rotating shaft 210 or the second rotating shaft 310, and at the same time, it can self-lock after the external force is removed or reduced. The sleeve 120 composed of a plurality of bent steel wires and the extension section 122 connected thereto are shielded by the decorative housing 130.

[0038] One application scenario of this embodiment is to use the connecting structure as a headrest mounted on a seat back. The rotating shaft fixing seat 220 is mounted on the seat back, the mounting plane 228 of the rotating shaft fixing seat 220 is against the seat back, and the movable part 300 is used to install the headrest assembly. After installation, the headrest can be rotated within the rotation range to adjust its angle, and the angle of the headrest relative to the backrest and the distance of the headrest relative to the backrest in the front and rear directions can also be adjusted.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention, and such changes all fall within the scope of protection of the present invention.

Claims

1. A self-positioning hinge support structure, comprising a fixed part (200) and a movable part (300), wherein a hinge part is connected between the fixed part and the movable part, wherein: The hinged portion comprises a hinge block (110) and two self-locking hinge mechanisms, wherein the self-locking hinge mechanisms are respectively a first self-locking hinge mechanism and a second self-locking hinge mechanism, wherein the first self-locking hinge mechanism connects the fixed portion (200) and the hinge block (110), and the second self-locking hinge mechanism connects the movable portion (300) and the hinge block (110), so that the movable portion (300) is supported on the fixed portion (200) and the movable portion (300) is allowed to rotate around the hinge block (110) and the fixed portion (200) respectively; The self-locking hinge mechanism comprises a shaft sleeve (120) and a rotating shaft, the shaft sleeve (120) comprising at least one elastic ring (121), the elastic ring (121) being tightly clamped on the rotating shaft to achieve self-locking; A rotation limiting structure is also provided between the hinge block (110) and the fixing portion (200); The rotating shaft of the first self-locking hinge mechanism is a first rotating shaft (210), and the first rotating shaft (210) is fixedly arranged on the fixing portion (200); The rotation axis of the second self-locking hinge mechanism is a second rotation axis (310), the second rotation axis (310) is fixedly arranged on the movable part (300), and the axis center lines of the two rotation axes are parallel to each other; The shaft sleeves (120) of the first self-locking hinge mechanism and the second self-locking hinge mechanism are both fixedly connected to the hinge block (110), and the two shaft sleeves (120) are respectively connected to two opposite surfaces of the hinge block (110); Each of the shaft sleeves (120) comprises at least two elastic rings (121), and all of the elastic rings (121) are arranged on the same center line and arranged along the length direction of the corresponding rotating shaft to form the shaft sleeve (120); The elastic ring (121) is further connected to an extension section (122), the extension section (122) being arranged along the radial direction of the rotating shaft, arranged in parallel with the extension section (122) of the same shaft sleeve (120), and connected to the hinge block (110); Any two adjacent elastic rings (121) in the same shaft sleeve (120) are in contact with each other; The elastic ring (121) and the extension section (122) are formed by bending the same steel wire, wherein the steel wire section wound into the elastic ring (121) is circumferentially bent so that its two ends are close to each other so as to be tightly held on the corresponding rotating shaft; The extension section (122) is bent corresponding to one end of the hinge block (110) to form a bent section (123), and the bent section (123) is embedded in the hinge block (110); The hinge block (110) is in the shape of a rectangular plate, and the two shaft sleeves (120) are respectively located outside the two end surfaces of the hinge block (110), and the hole center lines of the two shaft sleeves (120) are parallel to the side surface of the hinge block (110); The hinge block (110) is provided with a decorative shell (130) outside, the decorative shell (130) comprising an integrally formed hinge block decorative cover (131) and a hinge decorative cover (132), wherein the hinge block decorative cover (131) covers the side of the hinge block (110) and is connected thereto, the hinge block decorative cover (131) extends toward the shaft sleeve (120) and is connected to the hinge decorative cover (132), the hinge decorative cover (132) is in an arc shape, and the hinge decorative cover (132) covers the shaft sleeve (120) and is separated therefrom; The decorative shell (130) comprises two pieces, and the two decorative shells (130) are mutually facing and buckled to shield the hinge block (110) and the shaft sleeve (120) from both sides; The hinge block (110) is penetrated by a clearance hole (111), and the decorative shell (130) is provided with a buckle (133) facing the clearance hole (111), and the buckles (133) of the two decorative shells (130) are relatively penetrated in the clearance hole (111) and are engaged and connected; The fixing portion (200) comprises two rotating shaft fixing seats (220), the two rotating shaft fixing seats (220) are arranged opposite to each other, and the two rotating shaft fixing seats (220) are connected via the first rotating shaft (210); A limit block (227) is provided on the rotating shaft fixing seat (220), and the limit block (227) is close to the end of the first rotating shaft (210). The limit block (227) and the hinge decorative cover (132) close thereto form the rotation limit structure, and when the corresponding edge of the hinge decorative cover (132) abuts against the limit block (227), the limit is achieved.

2. A self-positioning hinge support structure according to claim 1, characterized in that: The steel wire segment wound into the elastic ring (121) surrounds the rotating shaft more than one circle.

3. A self-positioning hinge support structure according to claim 1 or 2, characterized in that: The rotating shaft fixing seat (220) comprises a mounting plate (221) and a rotating shaft fixing block, which are fixedly connected, and the mounting plate (221) is thinner than the rotating shaft fixing block; Both ends of the first rotating shaft (210) are respectively fixedly connected to corresponding rotating shaft fixing blocks, and a weight-reducing hole is provided on the rotating shaft fixing block; One side surface of the mounting plate (221) is a mounting plane (228); the mounting planes (228) of the two rotating shaft fixing seats (220) are oriented in the same direction and are parallel to the axis of the first rotating shaft (210); and a reinforcing rib (225) is provided between the other side surface of the mounting plate (221) and the rotating shaft fixing block.

4. A self-positioning hinge support structure according to claim 3, characterized in that: One mounting plate (221) is connected to each of the two sides of the rotating shaft fixing block, the two mounting plates (221) are located on both sides of the first rotating shaft (210), and the mounting planes (228) of the two mounting plates (221) face the same direction; The rotating shaft fixing block comprises an outer cylinder (222) and an inner cylinder (223) which are arranged concentrically, at least two supporting ribs (224) are radially connected between the outer cylinder (222) and the inner cylinder (223), all the supporting ribs (224) are evenly distributed in an annular direction around the inner cylinder (223), and the cavities between the supporting ribs (224) form the weight-reducing holes; The inner ends of the outer cylinder (222) and the inner cylinder (223) are connected with an inner support block (226) extending inwardly, the cross-section of the inner support block (226) is smaller than the cross-section of the outer cylinder (222), and the limit block (227) is provided on the inner support block (226); Both ends of the first rotating shaft (210) are respectively fixedly inserted into the corresponding inner support blocks (226); The outer cylinder (222) is fixedly connected to the two mounting plates (221), and the reinforcing ribs (225) are respectively connected between the outer wall of the outer cylinder (222) and the two mounting plates (221).

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