Damping hinge device

Abstract

The utility model belongs to the technical field of damping hinges, and particularly relates to a damping hinge device. According to the damping hinge device, the buffer assembly is rotationally arranged on the inner side of the first hinge seat, the buffer ejection block matched with the connecting rod structure or the buffer guide face of the second hinge seat is arranged on the outer side of the buffer cylinder shell of the buffer assembly, and the spiral guide structure is arranged between the first hinge seat and the outer side of the buffer cylinder shell. In the relative closing process of the first hinge seat and the second hinge seat, the buffering cylinder shell abuts against the buffering guide face through the buffering ejector block, and through the rotation guide effect of the spiral guide structure and the combination of the limited movement of one end of the movable rod, the buffering cylinder shell can move back and forth through the linkage effect of the buffering ejector block. The internal piston piece is linearly pushed in a spiral rotating mode to conduct buffering compression and linearly move towards the side opposite to the piston piece, buffering closing of the first hinge base and the second hinge base is achieved, and the problems that the buffering function is uneven in speed, clamping stagnation in the buffering process, unsmooth and the like are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to damping hinge technical field, concretely relates to damping hinge device. BACKGROUND

[0002] In the current buffer hinge design, the buffer is usually built into the hinge arm, which relies on a series of connecting components to establish the linkage relationship between the four-bar linkage mechanism of the hinge and the buffer. When the hinge is closed under external force, the movement path of the four-bar linkage mechanism needs to pass through these connecting components to be transmitted to the buffer, thereby driving the piston structure inside the buffer to move linearly. The piston reaches the buffering effect under the damping action of hydraulic oil. However, this buffering structure has a significant defect, that is, it relies on complex connecting components for motion conversion, which may cause deviation or distortion in the transmission of the movement trajectory during the entire closing process. This distortion phenomenon can cause a series of problems, including unstable buffering speed, buffering process jamming, buffering stiffness, and possible strong impact on the door panel. SUMMARY

[0003] The utility model aims at overcoming the problems of uneven buffering function speed, buffering process jamming, and stiffness of the existing four-bar linkage buffer hinge, and provides a damping hinge device with uniform buffering function speed and buffering flexibility.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme.

[0005] The damping hinge device comprises a first hinge seat and a second hinge seat. The first hinge seat is provided with a placement cavity on the inner side and a buffer assembly placed in the placement cavity. The buffer assembly comprises a buffer cylinder shell and a movable rod movably arranged in the buffer cylinder shell. The outer end of the movable rod abuts against one end of the side wall of the placement cavity, and the outer end of the buffer cylinder shell abuts against the other end of the side wall of the placement cavity. A spiral guide structure is arranged between the outer side of the buffer cylinder shell and the placement cavity along the length direction. The buffer cylinder shell is provided with a buffer top block extending out of the outer side of the placement cavity. The second hinge seat is movably connected with the first hinge seat through a connecting rod structure. The first hinge seat and the second hinge seat can be relatively closed or opened through the action of the connecting rod structure. The connecting rod structure or the second hinge seat is provided with a buffer guide surface corresponding to the buffer top block. During the relative closing process of the first hinge seat and the second hinge seat, the buffer cylinder shell abuts against the buffer guide surface through the buffer top block and is guided to rotate through the spiral guide structure, so that the buffer cylinder shell rotates and translates relative to the movable rod to compress and buffer, thereby forming a buffer closing of the first hinge seat and the second hinge seat.

[0006] Compared with the prior art, the damping hinge device has the advantages that: the buffer assembly is arranged on the inner side of the first hinge seat in a rotating mode, the buffer cylinder shell outer side of the buffer assembly is provided with a buffer top block matched with the buffer guide surface of the connecting rod structure or the second hinge seat, and a spiral guide structure is arranged between the first hinge seat and the buffer cylinder shell outer side, so that, during the relative closing process of the first hinge seat and the second hinge seat, the buffer cylinder shell is abutted on the buffer guide surface through the buffer top block and is guided in rotation through the spiral guide structure, in combination with the fact that one end of the movable rod is limited to move, the buffer cylinder shell can be linearly pushed in a spiral rotating mode to compress the piston piece inside and move linearly to the side of the piston piece, the first hinge seat and the second hinge seat are closed in a buffer mode, the buffer function is realized through the linear movement of the buffer cylinder shell to one side in a spiral rotating mode, the buffer process is simple and direct in mechanical transmission, the problems of uneven speed, buffer process jamming and inflexibility of the buffer function are avoided, the buffer effect is comfortable and soft, the buffer experience of the hinge is greatly improved, and the use effect is good.

[0007] Further, the spiral guide structure comprises a spiral guide groove arranged on the outer side of the buffer cylinder shell and a spiral guide part arranged on the inner wall of the accommodating cavity and corresponding to the spiral guide groove, or the spiral guide structure comprises a spiral guide part arranged on the outer side of the buffer cylinder shell and a spiral guide groove arranged on the inner wall of the accommodating cavity and corresponding to the spiral guide part, so that the spiral guide structure is simple in arrangement mode and the buffer cylinder shell is good in translation effect.

[0008] Further, the inner side of the spiral guide groove is provided with a first limiting part, and the side part of the guide part is provided with a second limiting part, and the first limiting part and the second limiting part are limited and matched when the first hinge seat is relatively opened to a preset position, so that, after the first hinge seat is opened to the maximum angle, the first hinge seat is prevented from being excessively opened relative to the second hinge seat to damage the connecting rod mechanism, and the use reliability of the product is ensured.

[0009] Further, the locking mechanism is further arranged, and the locking mechanism is used for locking the compression state of the buffer assembly, so that the buffer closing function of the buffer assembly is closed when the first hinge seat and the second hinge seat are relatively closed.

[0010] Further, the buffer cylinder shell is provided with a locking groove, the locking mechanism includes a lock rod slidingly arranged on the first hinge seat, when the first hinge seat is closed to a position, the locking groove is rotated with the buffer cylinder shell to be in contact with one end of the lock rod, and the buffer closing function of the buffer assembly is closed or opened by inserting or separating the lock rod from the locking groove; in this way, the opening or closing operation of the buffer closing function of the buffer assembly is convenient for users to use.

[0011] Further, the lock rod is arranged along the radial direction of the buffer cylinder shell, the locking groove is opened along the radial direction of the buffer cylinder shell, and the locking groove is located in the spiral guide structure of the buffer cylinder shell; the first hinge seat is provided with a sliding key hole corresponding to the lock rod, and the side of the lock rod is provided with a sliding key extending out of the sliding key hole, and the relative position of the lock rod can be controlled by pushing the sliding key; in this way, the lock rod can be quickly opened or closed to the buffer closing function of the buffer assembly when it is operated.

[0012] Further, the first hinge seat is provided with a sliding cavity for arranging the lock rod, the sliding cavity is opened on the side close to the buffer cylinder shell, the lock rod is slidingly arranged in the sliding cavity, the side of the lock rod is provided with a positioning block, and the side of the sliding cavity is provided with a locking stop and an unlocking stop; when the lock rod is slidingly matched with the locking stop, the buffer function of the buffer assembly is in a closed state, and when the lock rod is slidingly matched with the unlocking stop, the buffer function of the buffer assembly is in an opened state; the relative position of the lock rod is positioned by the locking stop and the unlocking stop, so that the lock rod is prevented from being moved and affecting the locking of the buffer closing function of the buffer assembly.

[0013] Further, the first hinge seat includes a hinge cup and a cover plate, the arranging cavity is opened on the side and arranged on the cover plate, and the sliding cavity is opened on the upper side and arranged on the hinge cup; the hinge cup is used for covering the opening of the arranging cavity, and the sliding key hole is arranged on the cover plate corresponding to the sliding cavity; in this way, the first hinge seat is simple in arrangement, and the buffer assembly and the lock rod are fixed by the cover plate after being arranged on the base.

[0014] Further, the hinge cup is provided with a cup cavity on the side opposite to the second hinge seat, and when the first hinge seat and the second hinge seat are closed to a position, the connecting rod structure is accommodated in the cup cavity; in this way, when the damping hinge device is closed, the overall structure has a smaller volume and is more compact.

[0015] Further, the cover plate is provided with an avoiding hole for the buffer top block to extend outward on the side corresponding to the cup cavity, the first hinge seat is provided with a mounting seat on both sides of the avoiding hole, the mounting seat is arranged on the hinge cup, and the sliding cavity is arranged on the mounting seat on one side; in this way, the cover plate is simple and compact in structure, and the buffer top block has good avoiding effect.

[0016] Further, the buffer top block is provided with a plurality of abutting strips arranged side by side at the bottom in the radial direction of the buffer cylinder shell, and the buffer top block is matched with the buffer guide surface through the abutting strips; the bottom of the abutting strip is arc-shaped or bevel-shaped; in this way, the bottom of the buffer top block is better matched with the buffer guide surface when the buffer top block is rotated and guided. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Top view of the damping hinge device in the open state.

[0018] Figure 2 Bottom view of the damping hinge device in the open state.

[0019] Figure 3 Top view of the damping hinge device in the closed state.

[0020] Figure 4 View of the damping hinge device closed to the preset position.

[0021] Figure 5 Exploded view of the second hinge seat.

[0022] Figure 6 Sectional view of the damping hinge device.

[0023] Figure 7 Exploded view of the first hinge seat Figure 1 .

[0024] Figure 8 Exploded view of the first hinge seat Figure 2 .

[0025] Figure 9 Sectional view of the buffer assembly.

[0026] Figure 10 View of the first hinge seat in the unlocked state.

[0027] Figure 11 View of the first hinge seat in the locked state.

[0028] Explanation of reference numerals: first hinge seat 1, second hinge seat 2, buffer assembly 3, installation cavity 11, avoiding hole 12, buffer cylinder shell 31, movable rod 32, helical guide groove 33, helical guide part 34, buffer top block 35, hinge cup 13, cover plate 14, first limiting part 331, second limiting part 341, piston piece 36, return spring 37, first cavity 311, second cavity 312, abutting width strip 38, connecting rod structure 4, first connecting rod 41, second connecting rod 42, drive torsional spring 43, cup cavity 131, locking mechanism 5, lock slot 51, lock rod 52, sliding key 53, sliding key hole 54, sliding cavity 55, positioning block 56, locking clamping 551, unlocking clamping 552, hinge arm 21, adjusting frame 22, base 23, fixed seat 24, first adjusting hole 211, first connecting hole 212, second adjusting hole 221, second connecting hole 222, first screw 25, second screw 26, arc-shaped hole 271, guide shaft 272, push-up frame 28, first rotating shaft 281, first return torsional spring 291, second return torsional spring 292, mounting seat 10, buffer guide surface 46, clamping groove 229, second rotating shaft 295, clamping opening 139, clamping block 149, touch surface 351. DETAILED DESCRIPTION

[0029] The specific embodiments of the present application will be described below with reference to the accompanying drawings. In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0030] Reference should be made to Figures 1 to 11The utility model discloses a damping hinge device, including first hinged seat 1 and second hinged seat 2, first hinged seat 1 is equipped with the accommodation cavity 11 of inside and is arranged in the buffer assembly 3 of accommodation cavity 11, and buffer assembly 3 includes buffer cylinder shell 31 and the movable rod 32 of buffer movable in buffer cylinder shell 31, and the outer end of movable rod 32 is abutted in one end side wall of accommodation cavity 11, and the outer end of buffer cylinder shell 31 is abutted in the other end side wall of accommodation cavity 11, and the outside of buffer cylinder shell 31 is equipped with the helical guide structure of the arrangement along the length direction between accommodation cavity 11, and buffer cylinder shell 31 is equipped with the buffer top block 35 of extending out the outside of accommodation cavity 11, second hinged seat 2 is connected with first hinged seat 1 through connecting rod structure 4, and first hinged seat 1 and second hinged seat 2 can be relatively closed or open through the effect of connecting rod structure 4, and connecting rod structure 4 or second hinged seat 2 is equipped with the buffer guide surface 46 corresponding with buffer top block 35, in the relative closing process of first hinged seat 1 and second hinged seat 2, buffer cylinder shell 31 is abutted on buffer guide surface 46 through buffer top block 35 and is guided by the rotation of helical guide structure, makes buffer cylinder shell 31 relative movable rod 32 rotation translation and carries out buffer compression, to form buffer closure with first hinged seat 1 and second hinged seat 2.

[0031] Compared with the prior art, the damping hinge device of the utility model, by rotating and setting buffer assembly 3 in the inside of first hinged seat 1, buffer cylinder shell 31 outside of buffer assembly 3 is equipped with buffer top block 35 and the buffer guide surface 46 cooperation of connecting rod structure 4 or second hinged seat 2, and the helical guide structure is arranged between first hinged seat 1 and buffer cylinder shell 31 outside, so that, in the relative closing process of first hinged seat 1 and second hinged seat 2, buffer cylinder shell 31 is abutted on buffer guide surface 46 through buffer top block 35 and is guided by the rotation of helical guide structure, in combination with the one end of movable rod 32 being limited to move, can make buffer cylinder shell 31 through the linkage of buffer top block 35, with helical rotation mode linearly push the piston piece 36 inside to carry out buffer compression and move to the side relative piston piece 36 linearly, realize the buffer closure of first hinged seat 1 and second hinged seat 2, through the combination of geometric structure, cleverly use the rotation mode conversion to push buffer assembly 3 outside buffer cylinder shell 31 to realize the buffer function of linear motion to one side, and the buffer process mechanics transmission is simple and direct, avoids the problems, such as uneven speed, buffer process jamming, inflexible, etc. that exist in buffer function, and the buffer effect is comfortable and soft, greatly improves the buffer experience of hinge, and the use effect is good.

[0032] Referring to Figures 6 to 11 In the embodiment, the helical guide structure includes the helical guide groove 33 arranged on the outside of the buffer cylinder shell 31, and the helical guide portion 34 arranged on the inner wall of the accommodation cavity 11 and corresponding to the helical guide groove 33. In this way, the helical guide structure is simple in arrangement, and the buffer cylinder shell 31 is good in rotation guiding and linear translation effect.

[0033] In an alternative embodiment (not shown), the spiral guide structure comprises a spiral guide portion 34 arranged outside the buffer cylinder shell 31, and a spiral guide groove 33 arranged on the inner wall of the installation cavity 11 corresponding to the spiral guide portion 34.

[0034] Referring to Figure 6 and Figure 7 In an embodiment, the inner side of the spiral guide groove 33 is provided with a first limiting portion 331, and the side of the spiral guide portion 34 is provided with a second limiting portion 341, and when the first hinge seat 1 is opened to a preset position, the first limiting portion 331 and the second limiting portion 341 are limited to cooperate; by such arrangement, after the first hinge seat 1 is opened to a certain angle, the buffer top block 35 is kept at a specific angle relative to the first hinge seat 1, and at the same time, the damping hinge device is guaranteed to normally cooperate with the buffer top block 35 and the buffer guide surface 46 to achieve the buffering closing function each time the damping hinge device is closed. And when the first hinge seat 1 and the second hinge seat 2 are relatively closed to a certain angle position, the buffer top block 35 abuts against the buffer guide surface 46 to perform the buffering closing function.

[0035] Referring to Figures 7 to 11 In an embodiment, the locking mechanism 5 is further included, which is used to lock the compression state of the buffer assembly 3, so that the buffering closing function of the buffer assembly 3 is closed when the first hinge seat 1 and the second hinge seat 2 are relatively closed; by arranging the locking mechanism 5, the user can set whether the damping hinge device has the buffering damping effect in the closing process according to the use demand, and the buffering and non-buffering can be freely switched without affecting the normal use of the buffer, which is convenient for the user to use.

[0036] Referring to Figures 7 to 11 In an embodiment, the outer side of the buffer cylinder shell 31 is provided with a lock groove 51, and the locking mechanism 5 comprises a lock rod 52 slidingly arranged on the first hinge seat 1, and when the first hinge seat 1 is relatively closed in place, the lock groove 51 is rotatably moved with the buffer cylinder shell 31 to one end of the lock rod 52, and by controlling the lock rod 52 to be inserted into or separated from the lock groove 51, the buffering closing function of the buffer assembly 3 is closed or opened; by such arrangement, the opening or closing operation mode of the buffering closing function of the buffer assembly 3 is convenient for the user to use.

[0037] Referring to Figures 7 to 11In an embodiment, the lock rod 52 is arranged along the radial direction of the buffer cylinder shell 31, the lock slot 51 is opened along the radial direction of the buffer cylinder shell 31, and the lock slot 51 is located in the spiral guide structure of the buffer cylinder shell 31; the first hinged seat 1 is provided with a sliding key hole 54 corresponding to the lock rod 52, and the side of the lock rod 52 is provided with a sliding key 53 extending out of the sliding key hole 54, and the relative position of the lock rod 52 can be controlled by pushing the sliding key 53; in this way, when the lock rod 52 is actuated, the opening or closing of the buffer closing function of the buffer assembly 3 can be quickly started or stopped.

[0038] Referring to Figures 7 to 11 In an embodiment, the first hinged seat 1 is provided with a sliding cavity 55 for accommodating the lock rod 52, the sliding cavity 55 is opened on the side close to the buffer cylinder shell 31, the lock rod 52 is slidingly arranged in the sliding cavity 55, the side of the lock rod 52 is provided with a positioning block 56, and the side of the sliding cavity 55 is provided adjacent to a locking clamping position 551 and an unlocking clamping position 552; when the lock rod 52 is slidingly arranged to the locking clamping position 551, the buffer function of the buffer assembly 3 is in a closed state, and when the lock rod 52 is slidingly arranged to the unlocking clamping position 552, the buffer function of the buffer assembly 3 is in an open state; by arranging the locking clamping position 551 and the unlocking clamping position 552, the relative position of the lock rod 52 is positioned, and the lock rod 52 is prevented from being moved and displaced to affect the locking of the buffer closing function of the buffer assembly 3.

[0039] Referring to Figures 7 to 11 In an embodiment, the first hinged seat 1 includes a hinged cup 13 and a cover plate 14, the accommodation cavity 11 is opened on the side and arranged on the cover plate 14, the sliding cavity 55 is opened on the upper side and arranged on the hinged cup 13, the hinged cup 13 is used to cover the opening of the accommodation cavity 11, and the sliding key hole 54 is arranged on the cover plate 14 corresponding to the sliding cavity 55; in this way, the first hinged seat 1 is simple in arrangement, and after the buffer assembly 3 and the lock rod 52 are arranged on the base 23, the cover plate 14 is used for covering and fixing.

[0040] Referring to Figure 7 and Figure 8 In an embodiment, the edge and the inner side of the hinged cup 13 are respectively provided with a bayonet 139, the cover plate 14 is respectively provided with a clamping block 149 corresponding to each bayonet 139, and the clamping block 149 is clamped in the bayonet 139 to realize the detachable assembly of the cover plate 14 and the hinged cup 13.

[0041] Referring to Figures 1 to 6In an embodiment, the cup 13 is provided with a cup cavity 131 on one side of the second hinge seat 2, and the connecting rod structure 4 is accommodated in the cup cavity 131 when the first hinge seat 1 and the second hinge seat 2 are closed to the position. In this way, the overall structure is smaller and more compact when the damping hinge device is closed.

[0042] Referring to Figures 1 to 6 In an embodiment, the cover plate 14 is provided with a relief hole 12 on one side of the cup cavity 131 for the buffer top block 35 to extend outward, and the first hinge seat 1 is provided with a mounting seat 10 on both sides of the relief hole 12. The mounting seat 10 is arranged on the cup 13, the sliding key hole 54 is arranged on one side of the relief hole 12 of the first hinge seat 1, the sliding cavity 55 is arranged on one of the mounting seats 10, and the sliding key hole 54 is arranged on the cover plate 14. In this way, the cover plate 14 is simple and compact in structure design, and the buffer top block 35 has good relief effect.

[0043] Referring to Figures 6 to 11 In an embodiment, the buffer top block 35 is provided with a touch surface 351 on the top, and a plurality of abutting strips 38 are arranged side by side on the bottom of the buffer top block 35 along the radial direction of the buffer cylinder shell 31. The buffer top block 35 is matched with the buffer guide surface 46 through the abutting strips 38, and the bottom of the abutting strip 38 is arc-shaped or bevel-shaped. In this way, the user can easily move the buffer top block 35 to the compressed state of the buffer push rod 3, that is, after the buffer assembly 3 is moved to the maximum angle, the lock rod 52 is pulled into the lock groove of the buffer push rod 3 to lock the buffer assembly 3 and prevent it from being automatically reset. The buffer top block 35 does not contact the second hinge seat 2 during the closing process, so that the buffer closing function of the buffer push rod 3 is closed, and the hinge has no buffer function.

[0044] Referring to Figures 7 to 11 In an embodiment, the buffer assembly 3 further includes a reset spring 37 and a piston 36 arranged in the inner end of the movable rod 32. The piston 36 divides the inner cavity of the buffer cylinder shell 31 into a first cavity 311 and a second cavity 312, the reset spring 37 is arranged in the first cavity 311 and acts on the piston 36, and is used to provide an elastic driving force for the movable rod 32 to extend outward and provide a buffer effect when the movable rod 32 is retracted. The piston 36 is provided with an oil flow channel respectively communicating the first cavity 311 and the second cavity 312, and the oil flow channel is used for the oil to flow between the first cavity 311 and the second cavity 312 when the piston 36 moves in the buffer cylinder shell 31, so as to realize the buffer effect of the buffer assembly 3 when it is compressed or stretched. In this way, the movable rod 32 of the buffer assembly 3 realizes deceleration buffer through hydraulic flow mode every time it is extended or compressed, and the buffer assembly 3 has good buffer damping effect.

[0045] Referring to Figures 1 to 6 In an embodiment, the connecting rod structure 4 comprises a first connecting rod 41 and a second connecting rod 42, a buffer guide surface 46 is arranged on the second hinge seat 2, the first connecting rod 41 is rotatably connected with the first hinge seat 1 and the second hinge seat 2 respectively at two ends, the second connecting rod 42 is rotatably connected with the first hinge seat 1 and the second hinge seat 2 respectively at two ends, and the first hinge seat 1, the first connecting rod 41, the second hinge seat 2 and the second connecting rod 42 form a four-connecting-rod mechanism; further comprising a driving torsional spring 43, the driving torsional spring 43 is rotatably connected on the second hinge seat 2, two spring arms of the driving torsional spring 43 abut on the second hinge seat 2 and the second connecting rod 42 respectively, and the driving torsional spring 43 is used for providing elastic driving force for the first hinge seat 1 and the second hinge seat 2 to the relative closing direction; in this way, the connecting rod structure 4 is simple in arrangement mode, and the driving torsional spring 43 has good driving effect.

[0046] Referring to Figures 1 to 6 In an embodiment, the second hinge seat 2 comprises a hinge arm 21, an adjusting frame 22 and a base 23, the base 23 is provided with a fixing seat 24 extending outward on both sides for assembly connection with a cabinet body, the base 23 is installed on the inner side of the adjusting frame 22, the adjusting frame 22 is installed on the hinge arm 21, the adjusting frame 22 is connected on the inner side of the hinge arm 21 through an adjusting structure, the base 23 and the adjusting frame 22 are connected through a guide structure, the base 23 and the adjusting frame 22 are provided with an elastic reset structure, and the elastic reset structure is used for providing elastic driving force for the base 23 to the side of the first hinge seat 1; in this way, when the first hinge seat 1 and the second hinge seat 2 are relatively closed, the adjusting frame 22 and the base 23 can be adaptively adjusted by displacement, so as to avoid the jamming phenomenon at the connection between the second hinge seat 2 and the cabinet body, and ensure the smoothness of opening and closing of the damping hinge device.

[0047] Referring to Figures 1 to 6 In an embodiment, the adjusting structure comprises a first adjusting hole 211 and a first connecting hole 212 arranged on the top of the hinge arm 21, a second adjusting hole 221 and a second connecting hole 222 arranged on the top of the adjusting frame 22, and a first screw 25 and a second screw 26; the first screw 25 is connected through the first adjusting hole 211 and the second connecting hole 222, and the second screw 26 is connected through the second adjusting hole 221 and the first connecting hole 212; by arranging the adjusting structure, the overall length of the second hinge seat 2 can be shortened or lengthened according to requirements, and product assembly and fixation are facilitated.

[0048] Referring to Figures 4 to 6In an embodiment, the guide structure comprises an arc-shaped hole 271 arranged at the front end of the adjusting frame 22 and a guide shaft 272 arranged at the base 23, the guide shaft 272 is movably arranged in the arc-shaped hole 271, and a push-up frame 28 is arranged at the rear side of the base 23, and the push-up frame 28 is rotationally connected with the rear end of the adjusting frame 22 through a first rotating shaft 281; in this way, the self-adaptive position adjustment between the adjusting frame 22 and the base 23 is limited in the preset track of the arc-shaped hole 271, and the relative movement between the adjusting frame 22 and the base 23 is smooth.

[0049] Referring to Figure 5 and Figure 6 In an embodiment, the elastic reset structure comprises a first reset torsion spring 291 and a second reset torsion spring 292, the first reset torsion spring 291 is rotationally connected with the adjusting frame 22 through a second rotating shaft 295, one end of the first reset torsion spring 291 is clamped in a clamping groove 229 of the inner top wall of the adjusting frame 22, and the other end of the first reset torsion spring 291 abuts against the guide shaft 272, one end of the second reset torsion spring 292 abuts against the rear end of the adjusting frame 22, and the other end of the second reset torsion spring 292 abuts against the push-up frame 28; in this way, the elastic reset structure is simple in arrangement mode, and the elastic reset effect of the base 23 is good.

[0050] According to the disclosure and teaching of the above description, the skilled in the art of the present application can also change and modify the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the present specification, these terms are only for convenience of description and do not constitute any limitation on the present application.

Claims

1. Damping hinge device, characterized in that The utility model relates to a hinge seat, and particularly relates to a hinge seat with buffer function. The hinge seat comprises a first hinge seat and a second hinge seat. The first hinge seat is provided with a locating cavity on the inner side and a buffer assembly arranged in the locating cavity.

2. The damper hinge device according to claim 1, characterized in that The buffer assembly comprises a buffer cylinder shell and a movable rod movably arranged in the buffer cylinder shell. The outer end of the movable rod abuts against the end side wall of the locating cavity, and the outer end of the buffer cylinder shell abuts against the other end side wall of the locating cavity.

3. The damper hinge device of claim 2, wherein The buffer cylinder shell is provided with a buffer top block extending out of the outer side of the locating cavity.

4. Damping hinge device according to any one of claims 1 to 3, characterized in that The second hinge seat is movably connected to the first hinge seat through a connecting rod structure. The first hinge seat and the second hinge seat can be relatively closed or opened through the action of the connecting rod structure.

5. The damper hinge device of claim 4, wherein The connecting rod structure or the second hinge seat is provided with a buffer guide surface corresponding to the buffer top block.

6. The damper hinge device of claim 4, wherein During the relative closing process of the first hinge seat and the second hinge seat, the buffer cylinder shell abuts against the buffer guide surface through the buffer top block and is guided to rotate through the spiral guide structure.

7. The damper hinge device of claim 6, wherein The buffer cylinder shell rotates and translates relative to the movable rod to be compressed, so that the first hinge seat and the second hinge seat are closed through the buffer. The spiral guide structure comprises a spiral guide groove arranged on the outer side of the buffer cylinder shell and a spiral guide part arranged on the inner wall of the locating cavity and corresponding to the spiral guide groove. Alternatively, the spiral guide structure comprises a spiral guide part arranged on the outer side of the buffer cylinder shell and a spiral guide groove arranged on the inner wall of the locating cavity and corresponding to the spiral guide part. The inner side of the spiral guide groove is provided with a first limiting part, and the side part of the spiral guide part is provided with a second limiting part. When the first hinge seat is relatively opened to a preset position, the first limiting part and the second limiting part are limited and matched. The utility model further comprises a locking mechanism. The locking mechanism is used for locking the compression state of the buffer assembly, so that the buffer closing function of the buffer assembly is closed when the first hinge seat and the second hinge seat are relatively closed. The outer side of the buffer cylinder shell is provided with a lock groove. The locking mechanism comprises a lock rod slidingly arranged on the first hinge seat. When the first hinge seat is relatively closed in place, the lock groove is rotated and moved with the buffer cylinder shell to one end of the lock rod. The buffer closing function of the buffer assembly is closed or opened by inserting or separating the lock rod into or from the lock groove. The lock rod is arranged in the radial direction of the buffer cylinder shell. The lock groove is opened in the radial direction of the buffer cylinder shell. The lock groove is located in the spiral guide structure of the buffer cylinder shell. The first hinge seat is provided with a sliding key hole corresponding to the lock rod. The side part of the lock rod is provided with a sliding key extending out of the sliding key hole. The first hinge seat is provided with a sliding cavity for arranging the lock rod. The sliding cavity is opened on the side close to the buffer cylinder shell. The lock rod is slidingly arranged in the sliding cavity. The side part of the lock rod is provided with a positioning block. The side part of the sliding cavity is provided with a locking catch and an unlocking catch adjacent to each other. When the lock rod is slidingly matched with the locking catch through the positioning block, the buffer function of the buffer assembly is in the closed state. When the lock rod is slidingly matched with the unlocking catch through the positioning block, the buffer function of the buffer assembly is in the opened state.

8. The damper hinge device of claim 7, wherein The first hinge seat comprises a hinge cup and a cover plate, the installation cavity is open on the side and arranged on the cover plate, the sliding cavity is open on the top and arranged on the hinge cup, the hinge cup is used to cover the opening of the installation cavity, and the sliding key hole is arranged on the cover plate and arranged correspondingly with the sliding cavity.

9. The damper hinge device of claim 8, wherein, The hinge cup is provided with a cup cavity on the side opposite to the second hinge seat, and the connecting rod structure is accommodated in the cup cavity when the first hinge seat and the second hinge seat are relatively closed to the position. The cover plate is provided with a avoiding hole corresponding to the cup cavity on the side, the buffer top block is arranged to extend outward, the first hinge seat is provided with a mounting seat on the two sides of the avoiding hole, and the sliding cavity is arranged on the mounting seat on one side.

10. The damper hinge device of claim 1, wherein The buffer top block is provided with a plurality of abutting strips arranged side by side on the bottom in the radial direction of the buffer cylinder shell, and the buffer top block is matched with the buffer guide surface through the plurality of abutting strips; and the bottom of the abutting strip is in an arc shape or a slope shape.

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