A buffer type cabinet door hinge

Abstract

The present invention relates to the technical field of hardware hinges, and specifically discloses a buffer-type cabinet door hinge, comprising a hinge arm and a hinge cup hinged to the hinge arm, a connecting rod mechanism is arranged between the hinge arm and the hinge cup, the connecting rod mechanism comprises a lamination group connected to the hinge arm, a pull rod group connected to the lamination group and a cover plate rotatably connected to the hinge cup, a connecting nail rotatably connected to each other is arranged between the lamination group and the hinge cup, the connecting nail is provided with a buffer positioning piece for buffering and positioning the cabinet door, by arranging the buffer positioning piece on the connecting nail, when the cabinet door is slowly opened to the maximum limit, the buffer positioning piece can gradually squeeze and abut against the connecting nail, thereby playing a role in buffering the cabinet door, and when the cabinet door is opened to the maximum limit, the buffer positioning piece can form a limiting abutment with the connecting nail, thereby avoiding shaking of the cabinet door when it is opened to the maximum limit, and further facilitating the initial installation of the cabinet door.

Description

Technical Field

[0001] The invention relates to the technical field of hardware hinges, and in particular to a buffer-type cabinet door hinge. Background Art

[0002] At present, the buffer hinges used in most cabinets are two-stage force damping hinges, in which a damper and a spring are combined to form a damping structure, so that the damping structure can play a buffering closing effect when the door body is closed, thereby achieving a gentle closing of the cabinet door to avoid damage to the door body, and the door panel can hover freely when it is opened more than 45°.

[0003] Since the door panel is in a relatively powerless state after the hinge is opened more than 45° (it can hover freely for this reason), when the force of opening the door is slightly greater, the door panel will hit the cabinet body with great force, causing damage to the door panel, cabinet door or hinge. In addition, when the door panel is initially installed, it must be installed in the maximum open state. If the door panel shakes at this time, it will easily lead to installation deviation.

[0004] The technical problem to be solved by the present application is: to design a buffer-type cabinet door hinge which can buffer and position the door panel when it is in the maximum open state. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a buffering cabinet door hinge that can buffer and position a door panel when it is in the maximum open state.

[0006] The technical solution adopted by the present invention is: a buffer-type cabinet door hinge, including a hinge arm and a hinge cup hinged to the hinge arm, a connecting rod mechanism is provided between the hinge arm and the hinge cup, the connecting rod mechanism includes a lamination group connected to the hinge arm, a pull rod group connected to the lamination group and a cover plate rotatably connected to the hinge cup, a connecting nail rotatably connected to each other is provided between the lamination group and the hinge cup, and the connecting nail is provided with a buffer positioning member for buffering the cabinet door.

[0007] In some embodiments, the connecting nail is U-shaped, and the connecting nail includes a first connecting end and a second connecting end. The first connecting end is rotatably connected to the stack of laminations, and the second connecting end is respectively connected to the hinge cup and one end of the cover plate. The buffer positioning member is limitedly installed on the second connecting end. A locking block is provided on the buffer positioning member, and a locking hole is provided on the cover plate. The locking block and the locking hole are locked together. The buffer positioning member is provided with a positioning protrusion, and the positioning protrusion is limitedly abutted against the first connecting end of the connecting nail when the cabinet door is opened to the maximum.

[0008] In some embodiments, the buffer positioning member is provided with a flange portion, and a buffer positioning surface is provided on one side of the flange portion. When the cabinet door is opened to the maximum, the buffer positioning surface is in limited contact with one end of the lamination stack.

[0009] In some embodiments, the buffer positioning member is provided with a slot, and the slot is engaged with the first connecting end of the connecting nail when the cabinet door is opened to the maximum.

[0010] In some embodiments, the buffer positioning member is fixedly connected to the first connecting end of the connecting nail, the buffer positioning member is fixedly installed between the hinge cup, and the cover plate abuts against the buffer positioning member when the cabinet door is opened to the maximum.

[0011] In some embodiments, the buffer positioning member is fixedly connected to the second connecting end of the connecting nail, and limit plates are provided on both sides of the buffer positioning member. Limit parts are provided on the opposite surfaces of the two limit plates, and the cover plate abuts against the limit parts on the limit plates when the cabinet door is opened to the maximum.

[0012] In some embodiments, the buffer positioning member is provided with two connecting plates, which are connected to the second connecting ends of the connecting nails. The buffer positioning member is provided with an abutting portion, which abuts against the first connecting end of the connecting nail when the cabinet door is opened to the maximum.

[0013] In some embodiments, the buffer positioning member is fixedly installed between the locking block and the cover plate, the buffer positioning member is provided with a locking hole, the buffer positioning member is made of an elastic medium, the entrance diameter of the locking hole is smaller than the diameter of the first connecting end of the connecting nail, and the locking hole is engaged with the first connecting end of the connecting nail when the cabinet door is opened to the maximum.

[0014] In some embodiments, the buffer positioning member is installed between the hinge cup, and the buffer positioning member is provided with a U-shaped groove, and the U-shaped groove is limitedly abutted against the lower end of the lamination group when the cabinet door is opened to the maximum.

[0015] In some embodiments, the buffer positioning member is fixedly connected to the second connecting end of the connecting nail, baffles are provided on both sides of the buffer positioning member, a stopper is provided at one end of the baffle, and the cover plate abuts against the stopper when the cabinet door is opened to the maximum.

[0016] The present invention has the following technical effects: by providing a buffer positioning piece on the connecting nail, when the cabinet door is slowly opened to the maximum limit, the buffer positioning piece can gradually squeeze and abut against the connecting nail, thereby playing a role in buffering the cabinet door, and when the cabinet door is opened to the maximum limit, the buffer positioning piece can form a limiting abutment with the connecting nail, thereby avoiding shaking of the cabinet door when it is opened to the maximum limit, and thus facilitating the initial installation of the cabinet door. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of Example 1 of the buffer-type cabinet door hinge of the present invention;

[0018] Figure 2 This is a structural schematic diagram of Example 1 of the buffer-type cabinet door hinge of the present invention;

[0019] Figure 3 This is a structural schematic diagram of Example 1 of the buffer-type cabinet door hinge of the present invention;

[0020] Figure 4 This is a structural schematic diagram of Example 2 of the buffer-type cabinet door hinge of the present invention;

[0021] Figure 5 This is a structural schematic diagram of Embodiment 3 of the buffer-type cabinet door hinge of the present invention;

[0022] Figure 6 This is a schematic structural diagram of Example 4 of the buffer-type cabinet door hinge of the present invention;

[0023] Figure 7 This is a structural schematic diagram of Example 5 of the buffer-type cabinet door hinge of the present invention;

[0024] Figure 8 This is a structural schematic diagram of Example 5 of the buffer-type cabinet door hinge of the present invention;

[0025] Fig. 9 This is a structural schematic diagram of Example 6 of the buffer-type cabinet door hinge of the present invention;

[0026] Fig.10 This is a structural schematic diagram of Example 7 of the buffer-type cabinet door hinge of the present invention;

[0027] Fig.11 This is a schematic structural diagram of Example 8 of the buffer-type cabinet door hinge of the present invention;

[0028] Fig.12 This is a structural schematic diagram of Example 9 of the buffer-type cabinet door hinge of the present invention.

[0029] The numbers and names in the figure correspond to each other as follows: 1. hinge arm; 2. hinge cup; 3. connecting rod mechanism; 30. lamination group; 31. pull rod group; 32. cover plate; 4. connecting nail; 5. buffer positioning member; 40. first connecting end; 41. second connecting end; 50. positioning block; 320. locking hole; 51. positioning protrusion; 52. flange; 53. buffer positioning surface; 54. locking groove; 540. side plate; 55. limiting plate; 550. limiting part; 56. connecting plate; 560, abutting part; 57. locking hole; 58. U-shaped groove; 59. baffle; 590. block; 310. first pull rod; 311. second pull rod; 6. mounting seat; 7. hydraulic cylinder. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example 1: Please refer to Figure 1-3 The present invention provides a technical solution: a buffer cabinet door hinge, comprising a hinge arm 1 and a hinge cup 2 hinged to the hinge arm 1, wherein a connecting rod mechanism 3 is provided between the hinge arm 1 and the hinge cup 2, and a mounting seat 6 connected thereto is provided at the lower end of the hinge arm 1, wherein the connecting rod mechanism 3 comprises a laminate group 30 connected to the hinge arm 1, a tie rod group 31 connected to the laminate group 30, and a cover plate 32 rotatably connected to the hinge cup 2, a connecting nail 4 rotatable with each other is provided between the laminate group 30 and the hinge cup 2, wherein the laminate group 30 is composed of a plurality of laminates combined with each other, the tie rod group 31 comprises a first tie rod 310 and a second tie rod 311, and a mounting seat 6 is further provided therein. A hydraulic cylinder 7, wherein one end of the first pull rod 310 and one end of the second pull rod 311 are hinged to each other, the other end of the first pull rod 310 is hinged to the laminated group 30, and the other end of the second pull rod 311 is hinged to the driving end of the hydraulic cylinder 7, and a buffer positioning member 5 for buffering and positioning the cabinet door is provided on the connecting nail 4, and the connecting nail 4 is U-shaped, wherein the connecting nail 4 includes a first connecting end 40 and a second connecting end 41, the first connecting end 40 is rotatably connected to the laminated group 30, and the second connecting end 41 is respectively connected to one end of the hinge cup 2 and the cover plate 32, wherein the buffer positioning member 5 is rotatably connected to the second connecting end 41 The buffer positioning member 5 is connected, a positioning block 50 is provided on the buffer positioning member 5, and a locking hole 320 is provided on the cover plate 32 corresponding to the positioning block 50. The buffer positioning member 5 is installed on the cover plate 32 by using the locking cooperation between the positioning block 50 and the locking hole 320, so as to prevent the buffer positioning member 5 from falling off from the second connecting end 41. A positioning protrusion 51 is provided on the buffer positioning member 5. When the cabinet door is slowly opened to the maximum limit, the cover plate 32 will slowly drive the buffer positioning member 5 to rotate until the positioning protrusion 51 of the buffer positioning member 5 gradually contacts with the first connecting end 40 of the connecting nail 4 to generate a buffering force, thereby playing a role in the door The buffering force when the door panel is opened, and when the door panel is opened to the maximum, the positioning protrusion 51 of the buffer positioning member 5 will form a limiting abutment with the first connecting end 40 of the connecting nail 4, thereby generating a resistance to prevent the door panel from shaking when it is opened to the maximum. Therefore, the buffer positioning member 5 is provided at the second connecting end 41 of the connecting nail 4. When the door panel is opened to the maximum, the cover plate 32 can drive the buffer positioning member 5 to rotate, and the positioning protrusion 51 of the buffer positioning member 5 can form a limiting abutment with the first connecting end 40 of the connecting nail 4, thereby preventing the door panel from shaking, and also facilitating the initial installation of the door panel.

[0032] Example 2: See Figure 4 The present invention provides another technical solution: a buffer cabinet door hinge, which also includes a hinge arm 1 and a hinge cup 2 hinged to the hinge arm 1, wherein a connecting rod mechanism 3 is provided between the hinge arm 1 and the hinge cup 2, and a mounting seat 6 connected thereto is provided at the lower end of the hinge arm 1, wherein the connecting rod mechanism 3 includes a laminate group 30 connected to the hinge arm 1, a tie rod group 31 connected to the laminate group 30, and a cover plate 32 rotatably connected to the hinge cup 2, and a connecting nail 4 rotatable between the laminate group 30 and the hinge cup 2 is provided, wherein the laminate group 30 is composed of a plurality of laminates combined with each other, the tie rod group 31 includes a first tie rod 310 and a second tie rod 311, and a hydraulic cylinder 7 is also provided in the mounting seat 6, wherein one end of the first tie rod 310 is connected to one end of the second tie rod 311, and a hydraulic cylinder 7 is provided in the mounting seat 6. The ends are hinged to each other, the other end of the first pull rod 310 is hinged to the stack of laminates 30, and the other end of the second pull rod 311 is hinged to the driving end of the hydraulic cylinder 7. A buffer positioning member 5 for buffering the cabinet door is provided on the connecting nail 4, wherein the buffer positioning member 5 is provided with a flange portion 52, and a buffer positioning surface 53 is provided on one side of the flange portion 52. When the door panel is slowly opened, the buffer positioning surface 53 will slowly contact with one end of the stack of laminates 30, thereby generating a buffer resistance to the door panel, and when the door panel is opened to the maximum limit, the buffer positioning surface 53 and the end of the stack of laminates 30 close to the hinge cup 2 form a limiting abutment, thereby generating a maximum resistance value to avoid shaking of the door panel, thereby facilitating the initial installation of the door panel.

[0033] Example 3: See Figure 5The present invention provides another technical solution: a buffer cabinet door hinge, which also includes a hinge arm 1 and a hinge cup 2 hinged to the hinge arm 1, wherein a connecting rod mechanism 3 is provided between the hinge arm 1 and the hinge cup 2, and a mounting seat 6 connected thereto is provided at the lower end of the hinge arm 1, wherein the connecting rod mechanism 3 includes a laminate group 30 connected to the hinge arm 1, a pull rod group 31 connected to the laminate group 30, and a cover plate 32 rotatably connected to the hinge cup 2, and a connecting nail 4 rotatable between the laminate group 30 and the hinge cup 2, wherein the laminate group 30 is composed of a plurality of The plurality of laminates are combined with each other, the pull rod group 31 includes a first pull rod 310 and a second pull rod 311, and a hydraulic cylinder 7 is also provided in the mounting seat 6, wherein one end of the first pull rod 310 and one end of the second pull rod 311 are hinged to each other, the other end of the first pull rod 310 is hinged to the laminate group 30, and the other end of the second pull rod 311 is hinged to the driving end of the hydraulic cylinder 7, and a buffer positioning member 5 for buffering and positioning the cabinet door is provided on the connecting nail 4, and the connecting nail 4 is U-shaped, wherein the connecting nail 4 includes a first connection end 40 and a second connection end 41, the first connection end 40 is rotatably connected to the laminated group 30, and the second connection end 41 is respectively connected to the hinge cup 2 and one end of the cover plate 32, wherein the buffer positioning member 5 is limitedly installed on the second connection end 41, a positioning block 50 is provided on the buffer positioning member 5, and a locking hole 320 is provided on the cover plate 32 corresponding to the positioning block 50, and the buffer positioning member 5 is installed on the cover plate 32 by using the locking cooperation between the positioning block 50 and the locking hole 320, wherein the buffer Side panels 540 are provided on both sides of the positioning member 5, and slots 54 are provided on the two side panels 540. When the door panel is opened to the maximum, the two side panels 540 are located on both sides of the stack 30, and the slots 54 on the two side panels 540 are engaged with the first connecting end 40 of the connecting nail 4, which is equivalent to generating a mutual holding resistance between the buffer positioning member 5 and the first connecting end 40, thereby preventing the door panel from shaking when it is opened to the maximum, and further facilitating the initial installation of the door panel.

[0034] Example 4: See Figure 6The present invention provides another technical solution: a buffer cabinet door hinge, comprising a hinge arm 1 and a hinge cup 2 hinged to the hinge arm 1, a connecting rod mechanism 3 is provided between the hinge arm 1 and the hinge cup 2, the connecting rod mechanism 3 comprises a laminate group 30 connected to the hinge arm 1, a pull rod group 31 connected to the laminate group 30 and a cover plate 32 rotatably connected to the hinge cup 2, a connecting nail 4 rotatably connected to each other is provided between the laminate group 30 and the hinge cup 2, the connecting nail 4 is provided with a buffer positioning member 5 for buffering the cabinet door, comprising a first connecting end 40 and a second connecting end 41, the first connecting end 40 is rotatably connected to the laminate group 30, and the second connecting end 41 They are respectively connected to one end of the hinge cup 2 and the cover plate 32, wherein the cover plate 32 and the second connection end 41 are rotatably connected, the buffer positioning member 5 is fixedly installed on the first connection end 40 of the connecting nail 4, and the bottom of the buffer positioning member 5 is fixedly installed between the hinge cup 2. When the cabinet door panel is opened, the cover plate 32 and the two sides of the buffer positioning member 5 abut against each other to generate extrusion, thereby generating friction, and then generating a buffering resistance to the door panel. When the cabinet door is opened to the maximum, the friction resistance between the cover plate 32 and the two sides of the buffer positioning member 5 reaches the maximum value, so that the door panel will not shake, so as to facilitate the initial installation of the door panel.

[0035] Example 5: See Figure 7-8 The present invention provides another technical solution: a buffer cabinet door hinge, comprising a hinge arm 1 and a hinge cup 2 hinged to the hinge arm 1, a connecting rod mechanism 3 is provided between the hinge arm 1 and the hinge cup 2, the connecting rod mechanism 3 comprises a laminate group 30 connected to the hinge arm 1, a pull rod group 31 connected to the laminate group 30 and a cover plate 32 rotatably connected to the hinge cup 2, a connecting nail 4 rotatably connected to each other is provided between the laminate group 30 and the hinge cup 2, the connecting nail 4 is provided with a buffer positioning member 5 for buffering the cabinet door, comprising a first connecting end 40 and a second connecting end 41, the first connecting end 40 is rotatably connected to the laminate group 30, the second connecting end 41 is respectively connected to the hinge cup 2 and one end of the cover plate 32, wherein the cover plate 32 and the second connecting end 4 1 is a rotational connection, the buffer positioning member 5 is fixedly installed on the second connecting end 41 of the connecting nail 4, and the bottom of the buffer positioning member 5 is fixedly installed between the hinge cup 2, and the two sides of the buffer positioning member 5 are provided with limit plates 55, and the opposite surfaces of the two limit plates 55 are provided with limit parts 550. When the cabinet door is slowly opened, the cover plate 32 will be squeezed with the opposite surfaces of the two limit plates 55, thereby generating friction resistance to the cabinet door, thereby playing a buffering role for the cabinet door, and when the cabinet door is opened to the maximum limit, the two sides of the cover plate 32 will abut against the limit parts 550 on the two limit plates 55, thereby forming the maximum resistance, so that the door panel will not shake when it is opened to the maximum limit, which is convenient for initial installation.

[0036] Example 6: See Fig. 9The present invention provides another technical solution: a buffer cabinet door hinge, comprising a hinge arm 1 and a hinge cup 2 hinged to the hinge arm 1, a connecting rod mechanism 3 is provided between the hinge arm 1 and the hinge cup 2, the connecting rod mechanism 3 comprises a laminate group 30 connected to the hinge arm 1, a pull rod group 31 connected to the laminate group 30 and a cover plate 32 rotatably connected to the hinge cup 2, a connecting nail 4 rotatably connected to each other is provided between the laminate group 30 and the hinge cup 2, the connecting nail 4 is provided with a buffer positioning member 5 for buffering and positioning the cabinet door, the connecting nail 4 is U-shaped, the connecting nail 4 comprises a first connecting end 40 and a second connecting end 41, the first connecting end 40 is rotatably connected to the laminate group 30, the second connecting end 41 is respectively connected to one end of the hinge cup 2 and the cover plate 32, the buffer positioning member 5 is provided with two connecting plates 56, and the two connecting plates 56 are both connected to the second connecting end 41 for limited rotation. The buffer positioning member 5 is provided with a blocking block 50, and the cover plate 32 is provided with a blocking hole 320. The blocking block 50 and the blocking hole 320 are engaged with each other so that a fixed installation is formed between the buffer positioning member 5 and the cover plate 32. The cover plate 32 is rotatably connected with the second connecting end 41. When the cover plate 32 rotates, the buffer positioning member 5 is driven to rotate synchronously. The buffer positioning member 5 is provided with an abutting portion 560. When the cabinet door is slowly opened to the maximum limit, the cover plate 32 drives the buffer positioning member 5 to rotate until the abutting portion 560 abuts against the first connecting end 40 of the connecting nail 4, thereby preventing the cabinet door from shaking easily when it is opened to the maximum limit.

[0037] Example 7: See Fig.10The present invention provides another technical solution: a buffer cabinet door hinge, comprising a hinge arm 1 and a hinge cup 2 hinged to the hinge arm 1, a connecting rod mechanism 3 is arranged between the hinge arm 1 and the hinge cup 2, the connecting rod mechanism 3 comprises a laminate group 30 connected to the hinge arm 1, a pull rod group 31 connected to the laminate group 30 and a cover plate 32 rotatably connected to the hinge cup 2, a connecting nail 4 rotatably connected to each other is arranged between the laminate group 30 and the hinge cup 2, the connecting nail 4 is provided with a buffer positioning member 5 for buffering and positioning the cabinet door, the connecting nail 4 is U-shaped, the connecting nail 4 comprises a first connecting end 40 and a second connecting end 41, the first connecting end 40 is rotatably connected to the laminate group 30, the second connecting end 41 is respectively connected to one end of the hinge cup 2 and the cover plate 32, a clamping block 50 is arranged on the buffer positioning member 5, a clamping hole 320 is arranged on the cover plate 32, the clamping block 50 and the clamping hole 320 are engaged with each other so that the buffer positioning member 5 and the cover plate 32 are formed between The cover plate 32 is rotatably connected to the second connecting end 41. When the cover plate 32 rotates, the buffer positioning member 5 is driven to rotate synchronously. There are locking holes 57 on both sides of the buffer positioning member 5, wherein the buffer positioning member 5 is made of elastic medium, and the entrance diameter of the locking hole 57 is smaller than the diameter of the first connecting end 40 of the connecting nail 4. Therefore, when the cabinet door is slowly opened, the cover plate 32 can drive the buffer positioning member 5 to rotate until the locking hole 57 on the buffer positioning member 5 is slowly locked between the first connecting end 40. When the locking hole 57 and the first connecting end 40 of the connecting nail 4 are gradually locked, friction resistance will be generated on the cabinet door. When the cabinet door is opened to the maximum limit, it is equivalent to the first connecting end 40 of the connecting nail 4 being completely locked into the locking hole 57, thereby limiting the rotation of the door panel at this time, thereby preventing the door panel from shaking when it is opened to the maximum limit, so as to facilitate the initial installation of the door panel.

[0038] Example 8: See Fig.11The present invention provides another technical solution: a buffer cabinet door hinge, which also includes a hinge arm 1 and a hinge cup 2 hinged to the hinge arm 1, wherein a connecting rod mechanism 3 is provided between the hinge arm 1 and the hinge cup 2, and a mounting seat 6 connected thereto is provided at the lower end of the hinge arm 1, wherein the connecting rod mechanism 3 includes a laminate group 30 connected to the hinge arm 1, a tie rod group 31 connected to the laminate group 30, and a cover plate 32 rotatably connected to the hinge cup 2, a connecting nail 4 rotatable between the laminate group 30 and the hinge cup 2 is provided, the connecting nail 4 is U-shaped, and the cover plate 32 is also rotatably connected to the other end of the connecting nail 4, wherein the laminate group 30 is composed of a plurality of laminates combined with each other, the tie rod group 31 includes a first tie rod 310 and a second tie rod 311, and a hydraulic cylinder 7 is also provided in the mounting seat 6, wherein the first tie rod 310 One end is hinged to one end of the second pull rod 311, the other end of the first pull rod 310 is hinged to the stack of laminations 30, and the other end of the second pull rod 311 is hinged to the driving end of the hydraulic cylinder 7. A buffer positioning member 5 fixedly mounted thereon is provided on the hinge cup 2, wherein the buffer positioning member 5 is provided with a U-shaped groove 58, and the U-shaped groove 58 just corresponds to the lower end of the stack of laminations 30. When the cabinet door is opened, the lower end of the stack of laminations 30 is squeezed between the buffer positioning member 5 in the U-shaped groove 58 to generate friction, thereby generating a buffering resistance to the door panel. When the door panel is opened to the maximum, a limiting abutment is formed between the lower end of the stack of laminations 30 and the U-shaped groove 58, which is equivalent to forming the maximum buffering resistance of the door panel to avoid shaking of the door panel when it is opened to the maximum.

[0039] Example 9: See Fig.12The present invention provides another technical solution: a buffer cabinet door hinge, comprising a hinge arm 1 and a hinge cup 2 hinged to the hinge arm 1, a connecting rod mechanism 3 is provided between the hinge arm 1 and the hinge cup 2, the connecting rod mechanism 3 comprises a laminate group 30 connected to the hinge arm 1, a pull rod group 31 connected to the laminate group 30 and a cover plate 32 rotatably connected to the hinge cup 2, a connecting nail 4 rotatably connected to each other is provided between the laminate group 30 and the hinge cup 2, the connecting nail 4 is provided with a buffer positioning member 5 for buffering the cabinet door, the connecting nail 4 is U-shaped, the connecting nail 4 comprises a first connecting end 40 and a second connecting end 41, the first connecting end 40 is rotatably connected to the laminate group 30, and the second connecting end 41 is respectively connected to one end of the hinge cup 2 and the cover plate 32, The cover plate 32 and the second connecting end 41 of the connecting nail 4 are rotatably connected, the buffer positioning member 5 and the second connecting end 41 of the connecting nail 4 are fixedly connected, the lower end of the buffer positioning member 5 is fixedly installed between the hinge cup 2, and baffles 59 are provided on both sides of the buffer positioning member 5. A stopper 590 is also provided at one end of each baffle 59. When the cabinet door is opened, the two sides of the cover plate 32 will generate extrusion friction with the baffles 59 on both sides of the buffer positioning member 5, thereby generating friction resistance, and then acting as a buffering resistance for the cabinet door. When the cabinet door is opened to the maximum, the two sides of the cover plate 32 will abut against the stopper 590, thereby preventing the door panel from shaking when it is opened to the maximum, thereby facilitating the initial installation of the door panel.

[0040] The working principle of the present invention is as follows: by providing a buffer positioning member 5 on the connecting nail 4, when the cabinet door is slowly opened to the maximum limit, the buffer positioning member 5 can gradually squeeze and abut against the connecting nail 4, thereby playing a role in buffering the cabinet door, and when the cabinet door is opened to the maximum limit, the buffer positioning member 5 can form a limiting abutment with the connecting nail 4, thereby avoiding shaking of the cabinet door when it is opened to the maximum limit, and thus facilitating the initial installation of the cabinet door.

[0041] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A buffer-type cabinet door hinge, comprising a hinge arm and a hinge cup hinged to the hinge arm, characterized in that: A connecting rod mechanism is provided between the hinge arm and the hinge cup, and the connecting rod mechanism includes a lamination group connected to the hinge arm, a pull rod group connected to the lamination group, and a cover plate rotatably connected to the hinge cup. A connecting nail rotatably connected to each other is provided between the lamination group and the hinge cup, and the connecting nail is provided with a buffer positioning member for buffering the cabinet door.

2. The buffer door hinge according to claim 1, characterized in that: The connecting nail is U-shaped, and includes a first connecting end and a second connecting end. The first connecting end is rotatably connected to the stack of laminations, and the second connecting end is respectively connected to the hinge cup and one end of the cover plate. The buffer positioning member is limitedly installed on the second connecting end. A locking block is provided on the buffer positioning member, and a locking hole is provided on the cover plate. The locking block and the locking hole are locked in engagement with each other. The buffer positioning member is provided with a positioning protrusion, and the positioning protrusion is limitedly abutted against the first connecting end of the connecting nail when the cabinet door is opened to the maximum.

3. The buffer door hinge according to claim 1, characterized in that: The buffer positioning member is provided with a flange portion, and a buffer positioning surface is provided on one side of the flange portion. When the cabinet door is opened to the maximum extent, the buffer positioning surface is in limited contact with one end of the lamination group.

4. The buffer door hinge according to claim 2, characterized in that: The buffer positioning member is provided with a card slot, and the card slot is engaged with the first connecting end of the connecting nail when the cabinet door is opened to the maximum extent.

5. The buffer door hinge according to claim 2, characterized in that: The buffer positioning member is fixedly connected to the first connecting end of the connecting nail, the buffer positioning member is fixedly installed between the hinge cup, and the cover plate abuts against the buffer positioning member when the cabinet door is opened to the maximum extent.

6. The buffer door hinge according to claim 2, characterized in that: The buffer positioning member is fixedly connected to the second connecting end of the connecting nail, and limiting plates are provided on both sides of the buffer positioning member. The opposite surfaces of the two limiting plates are provided with limiting parts, and the cover plate abuts against the limiting parts on the limiting plates when the cabinet door is opened to the maximum.

7. The buffer door hinge according to claim 2, characterized in that: The buffer positioning member is provided with two connecting plates, which are connected to the second connecting ends of the connecting nails. The buffer positioning member is provided with an abutting portion, which abuts against the first connecting end of the connecting nail when the cabinet door is opened to the maximum.

8. The buffer door hinge according to claim 2, characterized in that: The buffer positioning piece is fixedly installed between the locking block and the cover plate. The buffer positioning piece is provided with a locking hole. The buffer positioning piece is made of elastic medium. The entrance diameter of the locking hole is smaller than the diameter of the first connecting end of the connecting nail. The locking hole is locked and cooperated with the first connecting end of the connecting nail when the cabinet door is opened to the maximum.

9. The buffer door hinge according to claim 1, characterized in that: The buffer positioning member is installed between the hinge cup, and the buffer positioning member is provided with a U-shaped groove. When the cabinet door is opened to the maximum extent, the U-shaped groove is limitedly abutted against the lower end of the lamination group.

10. The buffer door hinge according to claim 2, characterized in that: The buffer positioning member is fixedly connected to the second connecting end of the connecting nail, baffles are provided on both sides of the buffer positioning member, a stopper is provided at one end of the baffle, and the cover plate abuts against the stopper when the cabinet door is opened to the maximum.

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