Hinge structure

Abstract

The invention relates to a hardware door accessory, and discloses a hinge structure which comprises a fixed machine body and a movable machine body which are rotationally connected together through a linkage assembly, and the linkage assembly comprises a linkage plate; the movable machine body comprises a movable machine base with a damping positioning groove formed in the side face, a first positioning connecting plate arranged on the periphery of the movable machine base and a damping buffering mechanism. The damping buffering mechanism comprises a damper arranged in the damping positioning groove, a linkage short rod connected with the damper, and a positioning ball arranged at one end of the linkage short rod and tightly abutting against the first positioning connecting plate, wherein a second hinge seat is formed on one side of the linkage short rod. One end of the linkage plate is hinged to the second hinge seat, and connection with damping torque of the damper is achieved. According to the hinge structure, the damping buffering mechanism matched with the linkage assembly is arranged, so that the hinge structure is more stable in the opening and closing process.

Description

[0001] The present invention is a divisional application of a Chinese patent application filed with the China Patent Office on March 18, 2018, with application number 201810222033.9 and titled “Silent Hidden Self-closing Buffer Hinge”. Technical Field

[0002] The invention belongs to the category of door hinges, in particular to a door hinge which can automatically and slowly close and position the door after it is opened. Background Art

[0003] At present, most of the common door hinges widely used in the market do not have the function of automatic door closing and positioning, so they cannot meet the user's requirements for automatic door closing and hovering positioning at a specific angle after opening the door. Users need to close the door by themselves every time, which is not only laborious and time-consuming, but also causes great trouble to life. Although some self-closing hinges have appeared on the market, their disadvantages are also obvious; for example, if the door is closed too hard, the door panel and the door frame will collide and make a loud noise, which will greatly affect the life of the door over time; this must be used with a door closer or a door closer, and the cost will increase exponentially. Moreover, most door hinges are exposed hinges, which have three disadvantages: first, they are not beautiful and can easily destroy the overall effect of the door; second, the exposed part of this type of hinge is very likely to bring safety hazards to children in the family; third, due to design problems, the door often fails to close properly. Although the traditional hidden door hinge is installed in a hidden way, it cannot achieve the effect of automatic door closing and positioning. Summary of the invention

[0004] In order to solve the above problems of existing door hinges, the present invention provides a silent hidden self-closing buffer hinge, which can be installed on the door to not only play the role of a hidden door hinge, but also realize the functions of automatic slow closing and positioning after the door is opened. When the door opening angle is less than 90° (±15°), the door can be automatically closed slowly, and when the door opening angle is within the range of 90° (±15°)-180°, the door can be hovered and positioned at any point. At the same time, the present invention also has the advantages of compact structure and quietness.

[0005] The technical solution adopted by the present invention is as follows: the silent hidden self-closing buffer hinge provided by the present invention comprises a fixed body, a moving body and a linkage assembly connecting them, wherein an elastic pressing mechanism and a damping buffer mechanism are arranged in the moving body.

[0006] The fixed machine body comprises a fixed machine base and a second positioning connecting plate capable of fixing the fixed machine base on the door frame; the fixed machine base is provided with a second linkage base and a first hinged base.

[0007] The motor body comprises a motor seat, a first positioning connecting plate capable of fixing the motor seat on the door panel, a rotating shaft, a pin, an elastic pressing mechanism and a damping buffer mechanism; a rotating shaft hole is vertically provided on the motor seat on a side opposite to the fixed machine seat; a spring hole is vertically provided on the motor seat and communicated with the rotating shaft hole; a damping positioning groove is provided at both ends of the motor seat; and the rotating shaft is provided with a single-sided recessed flat section.

[0008] The elastic pressing mechanism is installed in the spring hole and is pressed against the single-sided concave flat section of the rotating shaft. The elastic pressing mechanism includes a sleeve pressed against the single-sided concave flat section of the rotating shaft and a spring arranged between the sleeve and the first positioning connecting plate. When the angle between the end surface of the sleeve and the single-sided concave flat section of the rotating shaft is less than 90° (±15°), the door can be automatically closed. When the angle between the end surface of the sleeve and the single-sided concave flat section of the rotating shaft is greater than 90° (±15°) and less than 180°, the door can hover at any position within this angle range.

[0009] The damping buffer mechanism is installed in the damping positioning groove, and the mechanism includes a damper, a connecting short rod, a nylon sleeve connected between the connecting short rod and the damper, and a positioning bead arranged at the other end of the connecting short rod; the damping torque of the damping buffer mechanism is fixedly connected to the connecting short rod through the nylon sleeve, and the second hinged seat is fixedly arranged on one side of the connecting short rod to realize transmission, and the positioning bead is tightly against the first positioning connecting plate.

[0010] The linkage assembly consists of a linkage plate, a linkage fork, a linkage block, a short pin, a long pin, a short pin shaft, a medium pin shaft, a long pin shaft and a spacing washer; the linkage block is provided with a first linkage hole and a second linkage hole; the linkage fork is provided with a fixed shaft hole, a first linkage seat and a third hinge seat; the linkage plate is provided with a first hinge hole, a second hinge hole and a third hinge hole; wherein the first hinge hole of the linkage plate is hinged to the first hinge seat of the fixed machine seat through the medium pin shaft, the second hinge hole at the longer end of the linkage plate is hinged to the second hinge seat on the side of the linkage short rod through the short pin shaft, and the third hinge hole of the linkage plate is hinged to the third hinge seat on the linkage fork through the long pin shaft; the first linkage hole of the linkage block is hinged to the first linkage seat of the linkage fork through the short pin, and the second linkage hole of the linkage block is hinged to the second linkage seat of the fixed machine seat through the long pin; the rotating shaft passes through the rotating shaft hole of the engine seat and the fixed shaft hole of the linkage fork, so that the linkage fork is hinged to the engine seat. The two hinged parts are separated by spacer washers.

[0011] When the door is opened from a closed state, the body of the machine starts to rotate relative to the rotating shaft, and due to the linkage relationship, each component also rotates accordingly. During the rotation process, the concave flat section of the single-sided concave flat section of the rotating shaft 22 presses against the sleeve, and the spring is continuously compressed during the deflection process, so that the elastic pressing mechanism continuously stores energy. When the door opening angle is 90° (±15°), the cylindrical surface begins to press against the sleeve, and the spring compression amount in the elastic pressing mechanism reaches the maximum, and the elastic pressing mechanism no longer increases the stored energy. When the door continues to open from 90° (±15°) to 180° (or when the door closes from 180° to 90° (±15°)), the cylindrical surface continues to press against the sleeve. Since the cylindrical surface is tangent to the end face of the sleeve, the spring compression amount in the elastic pressing mechanism is maintained at a stable pre-pressure level, and the hinge itself will not produce any torque changes. Therefore, within this range, if it is not affected by external forces, the door can be positioned at any position.

[0012] When the door is closed to 90° (±15°), the sleeve is pressed against the concave flat section of the single-sided concave flat section, and the elastic pressing mechanism begins to release energy, causing the machine body to start to rotate in the opposite direction relative to the two rotating shafts; the linkage short rod on the machine body begins to reset, prompting the damper to start and slow down the reset speed of the linkage short rod. Due to the torque transmission generated by the hinge connection between the second hinge hole at the longer end of the linkage plate and the second hinge seat on the side of the linkage short rod and the linkage relationship between other components, the reverse rotation speed of the machine body relative to the rotating shaft is forced to decrease, so that the door produces a self-closing buffer effect when it is closed within 90° (±15°). BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below in conjunction with specific implementation modes with reference to the accompanying drawings.

[0014] Figure 1 It is a schematic diagram of the appearance structure of the present invention; Figure 2 This is a three-dimensional view of the present invention in an exploded state;

[0015] Figure 2 It is an assembly schematic diagram of the present invention;

[0016] Figure 3 It is a schematic diagram of the assembly of the elastic pressing mechanism of the present invention;

[0017] Figure 4 It is a cross-sectional schematic diagram of the elastic pressing mechanism of the present invention when the hinge is in a closed state;

[0018] Figure 5 It is a schematic diagram of the assembly of the damping and buffering mechanism of the present invention;

[0019] Figure 6 It is a schematic diagram of the assembly of the linkage block and its matching parts of the present invention;

[0020] Figure 7It is a schematic diagram of the assembly of the rotating shaft and its matching parts of the present invention.

[0021] The numbers in the figure are as follows:

[0022] 1-fixed body;

[0023] 11-fixed machine base, 111-second linkage base, 112-first hinged base; 12-second positioning connecting plate;

[0024] 2- Motivational body;

[0025] 21-engine seat, 211-rotation shaft hole, 212-spring hole, 213-damping positioning groove;

[0026] 22-rotation axis, 221-single-side concave flat section;

[0027] 23-elastic pressing mechanism, 231-spring, 232-sleeve;

[0028] 24-damping buffer mechanism, 241-damper, 242-nylon sleeve, 243-linking short rod, 2431-second hinge seat, 244-positioning bead;

[0029] 25-pin;

[0030] 26-first positioning connecting plate;

[0031] 3- linkage assembly;

[0032] 31-linking block, 311-first linking hole, 312-second linking hole;

[0033] 32-linking fork, 321-fixed shaft hole, 322-first linking seat, 323-third articulated seat;

[0034] 33-linking plate, 331-first hinge hole, 332-second hinge hole, 333-third hinge hole;

[0035] 34-short pin;

[0036] 35-Long pin;

[0037] 36- short pin;

[0038] 37-Medium pin;

[0039] 38-long pin;

[0040] 39-Spacer washer. DETAILED DESCRIPTION

[0041] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0042] like Figure 1As shown, the silent hidden self-closing buffer hinge provided by the present invention comprises a fixed body 1, a moving body 2, and a linkage assembly 3 connecting the fixed body 1 and the moving body 2. An elastic pressing mechanism 23 (see Figure 3 , Figure 4 ) and the damping buffer mechanism 24 (see Figure 5 ).

[0043] like Figure 2 As shown, the fixed body 1 includes a fixed base 11, a second positioning connecting plate 12 capable of fixing the fixed base 11 on the door frame, and the fixed base 11 is provided with a second linkage seat 111 and a first hinge seat 112 (see Figure 6 ).

[0044] like Figure 2 As shown, the engine body 2 includes an engine base 21 , a first positioning connecting plate 26 capable of fixing the engine base 21 on the door panel, a rotating shaft 22 , a pin 25 , an elastic pressing mechanism 23 and a damping buffer mechanism 24 .

[0045] like Figure 2 , Figure 3 As shown, a rotating shaft hole 211 is provided on the side of the motor base 21 opposite to the fixed base 11, a spring hole 212 is provided on the motor base 21 which is perpendicular to and communicates with the rotating shaft hole 211, and a damping positioning groove 213 is provided on both sides of the motor base 21.

[0046] like Figure 7 As shown, the rotating shaft 22 is provided with a single-sided recessed flat section 221 .

[0047] like Figure 3 , Figure 4 As shown, the elastic pressing mechanism 23 is installed in the spring hole 212 and presses against the single-sided recessed flat section 221 of the rotating shaft 22. The elastic pressing mechanism 23 includes a sleeve 232 that presses against the single-sided recessed flat section 221 of the rotating shaft 22 and a spring 231 arranged between the sleeve 232 and the first positioning connecting plate 26.

[0048] like Figure 5 As shown, the damping buffer mechanism 24 is installed in the damping positioning groove 213, and the mechanism includes a damper 241, a linkage short rod 243, a nylon sleeve 242 connected between the linkage short rod 243 and the damper 241, and a positioning bead 244 arranged at the other end of the linkage short rod 243; the damping torque of the damping buffer mechanism 24 is fixedly connected to the linkage short rod 243 through the nylon sleeve 242, and the second hinge seat 2431 is fixedly arranged on one side of the linkage short rod 243 to realize transmission, and the positioning bead 244 is tightly against the first positioning connecting plate 26 (see Figure 2 ).

[0049] like Figures 1 to 7 As shown, the linkage assembly 3 is composed of a linkage plate 33, a linkage fork 32, a linkage block 31, a short pin 34, a long pin 35, a short pin shaft 36, a medium pin shaft 37, a long pin shaft 38 and a spacer washer 39; the linkage block 31 is provided with a first linkage hole 311 and a second linkage hole 312; the linkage fork 32 is provided with a fixed shaft hole 321, a first linkage seat 322 and a third hinge seat 323; the linkage plate 33 is provided with a first hinge hole 331, a second hinge hole 332 and a third hinge hole 333; wherein the first hinge hole 331 of the linkage plate 33 is hinged to the first hinge seat 112 of the fixed machine base 11 through the medium pin shaft 37, and the linkage The second hinge hole 332 at the longer end of the plate 33 is hinged to the second hinge seat 2431 on the side of the linkage short rod 243 through the short pin 36, and the third hinge hole 333 of the linkage plate 33 is hinged to the third hinge seat 323 on the linkage fork 32 through the long pin 38; the first linkage hole 311 of the linkage block 31 is hinged to the first linkage seat 322 of the linkage fork 32 through the short pin 34, and the second linkage hole 312 of the linkage block 31 is hinged to the second linkage seat 111 of the fixed machine base 11 through the long pin 35; the rotating shaft 22 passes through the rotating shaft hole 211 of the engine base 21 and the fixed shaft hole 321 of the linkage fork 32, so that the linkage fork 32 is hinged to the engine base 21. The above two hinged parts are separated by a spacing washer 39.

[0050] When the door is opened from a closed state, the body 2 starts to rotate relative to the rotating shaft 22, and due to the linkage relationship, each component also rotates accordingly. During the rotation process, the concave plane section of the single-sided concave flat section 221 of the rotating shaft 22 presses against the sleeve 232, and the spring 231 is continuously compressed during the deflection process, so that the elastic pressing mechanism 23 continuously stores energy. When the door opening angle is 90° (±15°), the cylindrical surface starts to press against the sleeve 232, and the compression amount of the spring 231 in the elastic pressing mechanism 23 reaches the maximum, and the elastic pressing mechanism 23 no longer increases the stored energy.

[0051] When the door continues to open from 90° (±15°) to 180° (or when the door closes from 180° to 90° (±15°)), the cylindrical surface continues to press against the sleeve 232. Since the cylindrical surface is tangent to the end face of the sleeve, the compression amount of the spring 231 in the elastic pressing mechanism 23 is maintained at a stable pre-pressure level, and no torque change will be generated on the hinge itself. Therefore, within this range, if it is not affected by external forces, the door can be positioned at any position.

[0052] When the door is closed to 90° (±15°), the sleeve 232 presses against the concave plane section of the single-sided concave flat section 221, and the elastic pressing mechanism 23 begins to release energy, causing the machine body 2 to start to rotate in the opposite direction relative to the two rotating shafts 22; the linkage short rod 243 on the machine body 2 begins to reset, prompting the damper 241 to start, slowing down the reset speed of the linkage short rod 243, and due to the torque transmission generated by the hinge connection between the second hinge hole 332 at the longer end of the linkage plate 33 and the second hinge seat 2431 on the side of the linkage short rod 243 and the linkage relationship between other components, the reverse rotation speed of the machine body 2 relative to the rotating shaft 22 is forced to decrease, so that the door produces a self-closing buffer effect when it is closed within 90° (±15°).

Claims

1. A hinge structure, comprising a fixed body and a moving body rotatably connected together by a linkage assembly, characterized in that: The linkage assembly includes a linkage plate; The engine body comprises: an engine seat with a damping positioning groove formed on the side, a first positioning connecting plate arranged on the outer periphery of the engine seat, and a damping buffer mechanism; The damping buffer mechanism comprises: a damper arranged in the damping positioning groove, a linkage short rod connected to the damper and having a second hinge seat formed on one side, and a positioning bead arranged at one end of the linkage short rod and tightly abutting against the first positioning connecting plate; wherein One end of the linkage plate is hinged on the second hinge seat to achieve connection with the damping torque of the damper.

2. The hinge structure according to claim 1, characterized in that: The damping buffer mechanism also includes: A nylon sleeve is connected between the linkage short rod and the damper; wherein The damping torque of the damper is fixedly connected to the linkage short rod through the nylon sleeve.

3. The hinge structure according to claim 1, characterized in that: The damping positioning grooves are formed on the upper and lower side surfaces of the engine seat, each of the damping positioning grooves is provided with the damping buffer mechanism, and the linkage assembly includes two linkage plates respectively hinged to the second hinged seat.

4. The hinge structure according to claim 1, characterized in that: The linkage assembly also includes a linkage block and a linkage fork; wherein One end of the linkage block is hinged to the linkage fork, and the other end is hinged to the fixed body; One end of the linkage fork is hinged to the engine seat, and the middle part is hinged to the middle part of the linkage plate; One end of the linkage plate away from the second hinge seat is hinged to the fixed body.

5. The hinge structure according to claim 4, characterized in that: The engine seat is formed with a vertical and interconnected rotating shaft hole and a spring hole, and an elastic pressing mechanism is provided in the spring hole; One end of the linkage fork is fixed with a rotating shaft that passes through the rotating shaft hole, and a single-side concave flat section opposite to the spring hole is formed on the rotating shaft; wherein The elastic pressing mechanism comprises a sleeve driven by a spring and pressed tightly against the single-sided recessed flat section.

6. The hinge structure according to claim 5, characterized in that: One end of the spring abuts against the sleeve, and the other end abuts against the first positioning connecting plate.

7. The hinge structure according to claim 6, characterized in that: When the hinge structure opens to an angle of 90° (±15°) during the opening process, the sleeve changes from abutting against the single-sided recessed flat section to abutting against the cylindrical surface of the rotating shaft.

8. The hinge structure according to claim 4, characterized in that: The fixed machine body comprises a fixed machine base and a second positioning connecting plate capable of fixing the fixed machine base on the door frame.

9. The hinge structure according to claim 8, characterized in that: The linkage fork is formed with a first linkage seat hinged to the linkage block; The fixed machine base is formed with a second linkage base hinged to the linkage block.

10. The hinge structure according to claim 4, characterized in that: The two hinged parts are separated by spacer washers.

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