阅读说明：本技术 一种自定位铰链支撑结构 (Self-positioning hinge supporting structure ) 是由 秦然 邓新元 陆智 李德山 石强 于 2021-02-09 设计创作，主要内容包括：本发明公开了一种自定位铰链支撑结构,包括固定部和可移动部,二者之间连接有铰接部,所述铰接部包括铰接块和两个自锁铰接机构,以使所述可移动部支撑在所述固定部上,并允许所述可移动部分别绕所述铰接块和所述固定部转动；所述自锁铰接机构包括轴套和转轴,所述轴套包括至少一个弹性环,所述弹性环抱紧在所述转轴上以自锁；所述铰接块与所述固定部之间还设置有转动限位结构。与现有技术相比,本发明的有益效果：通过自锁铰接机构将可移动部支撑在固定部上,并实现可移动部的自转动以及相对固定部的转动以及角度定位,能够在转动范围内连续调节,具有结构简单、方便调节、易于使用的优点。(The invention discloses a self-positioning hinge support structure, which comprises a fixed part and a movable part, wherein a hinge part is connected between the fixed part and the movable part, and the hinge part comprises a hinge block and two self-locking hinge mechanisms, so that the movable part is supported on the fixed part and is allowed to rotate around the hinge block and the fixed part respectively; 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 held on the rotating shaft for self-locking; the hinged block and the fixing part are also provided with a rotation limiting structure. Compared with the prior art, the invention has the beneficial effects that: the movable part is supported on the fixed part through the self-locking hinge mechanism, the self-rotation of the movable part, the rotation and the angle positioning relative to the fixed part are realized, the continuous adjustment can be realized within the rotation range, and the self-locking hinge mechanism has the advantages of simple structure, convenience in adjustment and easiness in use.)

1. A self-positioning hinge support structure comprising a fixed portion (200) and a movable portion (300) with a hinge portion connected therebetween, characterized in that: the hinge part 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, the first self-locking hinge mechanism is connected with the fixing part (200) and the hinge block (110), and the second self-locking hinge mechanism is connected with the movable part (300) and the hinge block (110), so that the movable part (300) is supported on the fixing part (200) and the movable part (300) is allowed to rotate around the hinge block (110) and the fixing part (200) respectively;

the self-locking hinge mechanism comprises a shaft sleeve (120) and a rotating shaft, wherein the shaft sleeve (120) comprises at least one elastic ring (121), and the elastic ring (121) is held on the rotating shaft to be self-locked;

a rotation limiting structure is further arranged between the hinging block (110) and the fixing part (200).

2. The self-positioning hinge support structure of claim 1, wherein: 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 part (200);

the rotating shaft of the second self-locking hinge mechanism is a second rotating shaft (310), the second rotating shaft (310) is fixedly arranged on the movable part (300), and the axial leads 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 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).

3. The self-positioning hinge support structure of claim 2, wherein: each shaft sleeve (120) comprises at least two elastic rings (121), all the elastic rings (121) are arranged on the same central line and are arranged along the length direction of the corresponding rotating shaft to form the shaft sleeve (120);

the elastic ring (121) is further connected with an extension section (122), the extension section (122) is arranged along the radial direction of the rotating shaft, and the extension sections (122) of the same shaft sleeve (120) are arranged in parallel and connected with the hinge block (110);

any two adjacent elastic rings (121) in the same shaft sleeve (120) are abutted.

4. A self-positioning hinge support structure according to claim 3, wherein: 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 bent annularly to enable two ends of the steel wire section to be 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 bending section (123), and the bending section (123) is embedded in the hinge block (110).

5. The self-positioning hinge support structure of claim 4, wherein: the steel wire section wound into the elastic ring (121) surrounds the rotating shaft for more than one circle.

6. The self-positioning hinge support structure of claim 4, wherein: the hinge block (110) is rectangular plate-shaped, the two shaft sleeves (120) are respectively positioned 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);

it decorates casing (130) to be equipped with outward to articulate piece (110), decorate casing (130) including integrated into one piece's articulated piece dress trim cover (131) and hinge dress trim cover (132), wherein articulated piece dress trim cover (131) shelter from the side of articulated piece (110) and be connected with it, articulated piece dress trim cover (131) to axle sleeve (120) extend and connect hinge dress trim cover (132), hinge dress trim cover (132) are the cambered surface form, hinge dress trim cover (132) shelter from axle sleeve (120) and rather than separate the setting.

7. The self-positioning hinge support structure of claim 6, wherein: the two decorative shells (130) are oppositely buckled and connected with each other, so that the hinging block (110) and the shaft sleeve (120) are shielded from two sides;

run through on articulated piece (110) and have abdication hole (111), it is just right on decoration casing (130) abdication hole (111) are equipped with buckle (133), two buckle (133) of decorating casing (130) are worn to establish relatively in abdication hole (111) and the block is connected.

8. The self-positioning hinge support structure of claim 6, wherein: the fixing part (200) comprises two rotating shaft fixing seats (220), the two rotating shaft fixing seats (220) are arranged oppositely, and the two rotating shaft fixing seats (220) are connected through the first rotating shaft (210);

be equipped with stopper (227) on pivot fixing base (220), stopper (227) are close to first pivot (210) tip, stopper (227) with be close to it hinge dress trim cover (132) are constituteed rotate limit structure, and is corresponding hinge dress trim cover (132) edge supports and leans on realize spacingly when stopper (227).

9. The self-positioning hinge support structure of claim 8, wherein: the rotating shaft fixing seat (220) comprises a mounting plate (221) and a rotating shaft fixing block, the mounting plate (221) and the rotating shaft fixing block are fixedly connected, and the thickness of the mounting plate (221) is smaller than that of the rotating shaft fixing block;

two ends of the first rotating shaft (210) are respectively and fixedly connected with the corresponding rotating shaft fixing blocks, and lightening holes are formed in the rotating shaft fixing blocks;

one side of mounting panel (221) is mounting surface (228), two the orientation of mounting surface (228) of pivot fixing base (220) is the same, and with first pivot (210) axial lead is parallel, the another side of mounting panel (221) with be equipped with strengthening rib (225) between the pivot fixed block.

10. The self-positioning hinge support structure of claim 9, wherein: two sides of the rotating shaft fixing block are respectively connected with one mounting plate (221), the two mounting plates (221) are respectively arranged on two sides of the first rotating shaft (210), and the mounting planes (228) of the two mounting plates (221) face towards the same direction;

the rotating shaft fixing block comprises an outer cylinder (222) and an inner cylinder (223) which are concentrically arranged, at least two support ribs (224) are radially connected between the outer cylinder (222) and the inner cylinder (223), all the support ribs (224) are circumferentially and uniformly distributed around the inner cylinder (223), and cavities among the support ribs (224) form the lightening holes;

the inner ends of the outer cylinder (222) and the inner cylinder (223) are connected with inner supporting blocks (226) which extend inwards, the cross sections of the inner supporting blocks (226) are smaller than the cross section of the outer cylinder (222), and the inner supporting blocks (226) are provided with limiting blocks (227);

two ends of the first rotating shaft (210) are respectively and fixedly inserted into the corresponding inner supporting blocks (226);

the outer cylinder (222) is fixedly connected with 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).

Technical Field

The invention belongs to the technical field of mechanical rotation connection, and particularly relates to a self-positioning hinge support structure.

Background

A rotational connection is a common connection. In some products, the relative rotational adjustment and positioning between the two components is achieved by a combination of a rotational connection and a locking mechanism. For example, the seat back and the seat frame are rotatably connected through the angle adjuster, and the adjuster can be self-locked. When the backrest is adjusted to a certain angle, the backrest is locked with the seat frame, and the angle is kept. In order to realize the rotation adjusting function and bear larger torsion, the angle adjuster module is more complex. In some scenarios, the use of a rotating connection and locking mechanism is overly complex and takes up more installation space, affecting the design and installation of other components. In addition, in the case of a rotation joint with little stress, the locking mechanism is not necessary, which leads to an increase in cost. For example, to improve user comfort, seat headrests are often designed to be angularly adjustable by rotation in a vertical plane. However, such angle adjustment structures in the prior art are complicated. When there is more than one rotating connection in a limited space, it is neither economical nor compact to design the locking device separately.

Disclosure of Invention

In view of the foregoing, the present invention provides a self-positioning hinge support structure.

The technical scheme is as follows:

a self-positioning hinge support structure comprises a fixed part and a movable part, wherein a hinge part is connected between the fixed part and the movable part, and the key point is that the hinge part comprises a hinge block and two self-locking hinge mechanisms which are respectively a first self-locking hinge mechanism and a second self-locking hinge mechanism, wherein the first self-locking hinge mechanism is connected with the fixed part and the hinge block, and the second self-locking hinge mechanism is connected with the movable part and the hinge block so as to support the movable part on the fixed part and allow the movable part to rotate around the hinge block and the fixed part respectively;

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 held on the rotating shaft for self-locking;

the hinged block and the fixing part are also provided with a rotation limiting structure.

Compared with the prior art, the invention has the beneficial effects that: the movable part is supported on the fixed part through the self-locking hinge mechanism, the self-rotation of the movable part, the rotation and the angle positioning relative to the fixed part are realized, the continuous adjustment can be realized within the rotation range, and the self-locking hinge mechanism has the advantages of simple structure, convenience in adjustment and easiness in use.

Drawings

FIG. 1 is a schematic diagram of a first perspective of the present invention;

FIG. 2 is a schematic diagram of a second perspective of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a right side view of FIG. 2;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 6 is a schematic structural view of a rotating shaft fixing seat;

FIG. 7 is a schematic view of the hinge;

FIG. 8 is a left side view of FIG. 7;

fig. 9 is a cross-sectional view taken along line C-C of fig. 8.

Detailed Description

The present invention will be further described with reference to the following examples and the accompanying drawings.

As shown in fig. 1 to 4, a self-positioning hinge supporting structure includes a fixed portion 200 and a movable portion 300, a hinge portion is connected between the fixed portion 200 and the movable portion 300, the hinge portion includes a hinge block 110 and two self-locking hinge mechanisms, the self-locking hinge mechanisms are a first self-locking hinge mechanism and a second self-locking hinge mechanism respectively, 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 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 part 200; the second self-locking hinge mechanism has a second shaft 310 as a rotating shaft, the second shaft 310 is fixedly disposed on the movable portion 300, and the axes of the two 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.

The fixing portion 200 includes two rotating shaft holders 220, two of the rotating shaft holders 220 are disposed opposite to each other, and the two rotating shaft holders 220 are connected to each other through the first rotating shaft 210.

As shown in fig. 4 and 6, the rotating shaft fixing base 220 includes a mounting plate 221 and a rotating shaft fixing block, the mounting plate 221 is integrally formed on two sides of the rotating shaft fixing block, and the two mounting plates 221 are respectively disposed on two sides of the first rotating shaft 210. The two ends of the first rotating shaft 210 are respectively and fixedly connected with the corresponding rotating shaft fixing blocks.

The thickness of the mounting plate 221 is smaller than that of the rotating shaft fixing block. One side of the mounting plate 221 is a mounting plane 228, the orientation of the mounting plane 228 of the two rotating shaft fixing seats 220 is consistent, and is parallel to the axial lead of the first rotating shaft 210, and a reinforcing rib 225 is arranged between the other side of the mounting plate 221 and the rotating shaft fixing block.

As shown in fig. 3 and 6, the shaft fixing block includes an outer cylinder 222 and an inner cylinder 223 which are concentrically arranged, at least two support ribs 224 are radially connected between the outer cylinder 222 and the inner cylinder 223, all the support ribs 224 are circumferentially and uniformly distributed around the inner cylinder 223, and cavities between the support ribs 224 form lightening holes which are opened on a side of the shaft fixing block facing away from the first shaft 210.

The inner ends of the outer cylinder 222 and the inner cylinder 223 are connected with an inner supporting block 226 which extends inwards, and the cross section of the inner supporting block 226 is smaller than the cross section of the outer cylinder 222. Both ends of the first rotating shaft 210 are respectively and fixedly inserted into the corresponding inner supporting blocks 226.

The reinforcing ribs 225 are respectively arranged between the two ends of the outer cylinder 222 and the mounting plate 221, the height of the reinforcing ribs 225 is gradually reduced from the outer cylinder 222 to the mounting plate 221, and the reinforcing ribs 225 are connected with the outer wall of the outer cylinder 222 in a smooth transition mode.

As shown in fig. 7 to 9, each of the shaft sleeves 120 includes at least two elastic rings 121, all the elastic rings 121 are disposed on the same center line and are arranged in parallel along the length direction of the corresponding rotating shaft, and any two adjacent elastic rings 121 in the same shaft sleeve 120 are attached to each other to form the shaft sleeve 120. The elastic ring 121 is tightly held on the rotating shaft to be self-locked.

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

The elastic ring 121 and the extension section 122 are formed by bending the same steel wire, wherein the steel wire wound around the elastic ring 121 is bent in a loop direction so that two ends of the steel wire are close to each other to be held on the corresponding rotating shaft. The extension 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 steel wire wound into the elastic ring 121 is wound around the rotating shaft for more than one turn, and may not be wound for more than two turns. The purpose of this design is that when elastic ring 121 is stressed and deformed radially or annularly, because the steel wire section encircles the rotating shaft for more than one turn, it can provide deformation yielding redundancy and prevent elastic ring 121 from separating from the rotating shaft.

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

As shown in fig. 5 and 6, a decorative housing 130 is provided outside the hinge block 110, the decorative housing 130 includes a hinge block decorative cover 131 and a hinge decorative cover 132 which are integrally formed, wherein the hinge block decorative cover 131 covers and is connected to a side surface of the hinge block 110, 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 has an arc shape, and the hinge decorative cover 132 covers and is spaced apart from the shaft sleeve 120.

The decorative shell 130 has two pieces, and the two decorative shells 130 are opposite to each other and are connected in a snap fit manner so as to shield the hinge block 110 and the shaft sleeve 120 from both sides. The hinged decorative cover 131 is flat, the hinged decorative cover 131 is opposite to the corresponding side face of the hinged block 110, the hinged decorative cover 131 extends towards the hinged decorative cover 132 and shields the extending section 122, and the edge of the hinged decorative cover 131 is connected with the straight edge of the hinged decorative cover 132.

All the bending sections 123 are arranged in the central area of the hinge block 110, and the yielding holes 111 are penetrated through the edge area of the hinge block 110. The decorative shell 130 is provided with a buckle 133 opposite to the yielding hole 111, and the buckle 133 of the decorative shell 130 is relatively arranged in the yielding hole 111 in a penetrating manner and is connected in a clamping manner.

As shown in fig. 1, 2 and 4, a limiting block 227 is disposed on the inner supporting block 226, the limiting block 227 is close to the end of the first rotating shaft 210, and the limiting block 227 has a limiting surface parallel to the axial line of the first rotating shaft 210. The limit block 227 and the hinge decorative cover 132 close to the limit block constitute a rotation limit structure, and when the edge of the corresponding hinge decorative cover 132 abuts against the limit face, the limit is realized.

The decorative shell 130 not only shields the hinge portion, but also cooperates with the limit block 227 to limit the hinge portion.

In this embodiment, the structural feature of the shaft sleeve 120 enables the movable portion 300 to rotate around the first rotating shaft 210 or the second rotating shaft 310 and to be self-locked after the external force is removed or reduced if the torque or the thrust overcomes the friction between the shaft sleeve 120 and the first rotating shaft 210 or the second rotating shaft 310 when the movable portion 300 is subjected to a certain amount of torque or thrust. The shaft sleeve 120 formed by bending and arranging a plurality of steel wires and the extension section 122 connected with the shaft sleeve are shielded by the decorative shell 130.

One application scenario of the present embodiment is a connection structure that is mounted on a seat back as a headrest. The shaft holder 220 is mounted on the seat back, the mounting plane 228 of the shaft holder 220 abuts against the seat back, and the movable portion 300 is used for mounting the headrest assembly. After the headrest is installed, the headrest can rotate within the rotation range to adjust the angle of the headrest, and the angle of the headrest relative to the backrest and the distance of the headrest relative to the backrest in the front-back direction can be adjusted.

Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.