A kind of hinge

Abstract

A kind of top and bottom hinge includes a hinge cover, a fixing part hinged with the hinge cover through a connecting rod, a guide plate is arranged in the hinge cover, a curved guide groove is arranged on the guide plate, a guide pin is arranged at one end of the connecting rod and embedded in the guide groove, and the other end of the connecting rod is connected with the fixing part in cooperation; the connecting rod is encapsulated under the hinge cover and moves along the track of the guide groove during the opening and closing process of the hinge, and the guide pin of the connecting rod moves in the guide groove. The present invention can make the maximum opening angle of the hinge be 180° by providing a curved guide groove for guiding the swing of the connecting rod. In addition, when the hinge is in a 90° open state, since the swing rod is clamped by the limit pin, when the connecting rod continues to move along the guide groove, the swing rod can no longer contact the connecting rod under the elastic action of the elastic part, which is equivalent to that when the door frame connected to the fixing part is opened to 90°, the connecting rod is not subjected to the force of the elastic part, and the connecting rod is in a free state, so the force of opening the door will be very light without any resistance.

Description

Technical Field

[0001] The invention relates to a furniture hinge, in particular to a top and bottom hinge. Background Art

[0002] Some existing top and bottom hinges have limited opening angles and cannot be opened 180°.

[0003] The applicant disclosed a floor hinge with a bidirectional buffering function in Chinese patent document No. CN 212054241 U, in which the hinge cup is hinged to the hinge arm through a latch, and the hinge arm (connecting rod) is also rotatably arranged on the hinge cover through the latch, and one of the hinge arms (connecting rod) is in contact with the compression spring, that is, during the opening and closing process of the hinge, the door frame connected to the hinge cup is always subjected to the force of the compression spring. Therefore, further improvement is needed. Summary of the invention

[0004] The purpose of the present invention is to provide a top-bottom hinge, which eliminates the connecting rod of the traditional hinge that is rotatably arranged on the hinge cover by a latch, and provides a curved guide groove for guiding the swing of the connecting rod, so that the maximum opening angle of the hinge can be 180°.

[0005] A top and bottom hinge designed for this purpose comprises a hinge cover, a fixing part hinged to the hinge cover via a connecting rod, a guide plate provided in the hinge cover, a curved guide groove provided on the guide plate, a guide pin embedded in the guide groove provided at one end of the connecting rod, and the other end of the connecting rod being cooperatively connected to the fixing part; the connecting rod is encapsulated under the hinge cover and during the opening and closing process of the hinge, the connecting rod moves along the trajectory of the guide groove, and the guide pin of the connecting rod moves in the guide groove within a limited position, and by providing a curved guide groove for guiding the swing of the connecting rod, the maximum opening angle of the hinge can be 180°.

[0006] The guide groove comprises a first groove section, an arc groove section and a second groove section which are connected to each other, and the arc groove section is located between the first groove section and the second groove section.

[0007] The maximum opening angle of the hinge is 180°.

[0008] There is also an elastic swinging pendulum rod inside the hinge cover, and a limit pin is provided on the swinging track of the pendulum rod inside the hinge cover. When the hinge is opened at 90°, the compression spring pops open the pendulum rod, and the pendulum rod triggers the connecting rod to move along the guide groove during the swing, and the pendulum rod partially swings to the periphery of the limit pin. When the hinge continues to open, the connecting rod continues to move along the guide groove and detaches from the elastic swinging pendulum rod. When the hinge is opened at 90°, since the pendulum rod is stuck by the limit pin, when the connecting rod continues to move along the guide groove, the pendulum rod can no longer contact the connecting rod under the elastic action of the compression spring, which is equivalent to the door frame connected to the fixing part being opened to 90°, the connecting rod is not subjected to the force of the compression spring, and the connecting rod is in a free state, so the force of opening the door will be very light without any resistance.

[0009] A compression spring is also provided in the hinge cover, and a buffer is also provided on the swinging track of the rocker arm in the hinge cover, and a clamping portion for inserting the compression spring is provided on the rocker arm; during the opening and closing process of the hinge, the connecting rod contacts the rocker arm and compresses the compression spring, and the compression spring is deformed by compression and generates a reaction force to bounce the rocker arm open, and the other part of the rocker arm contacts the telescopic portion of the buffer, and the rocker arm gradually approaches and swings to the periphery of the limit pin. During the opening and closing process of the hinge, the buffer plays a buffering role.

[0010] The swing rod is also provided with a contact portion that contacts the connecting rod. The contact portion is protrudingly arranged on the swing rod, and the outer end surface of the contact portion is arc-shaped.

[0011] The guide plate is provided with a first slot for mounting a compression spring, and the guide plate is also provided with a second slot for mounting a buffer.

[0012] The hinge cover is also provided with an adjusting sliding block which is connected to the guide plate. The adjusting sliding block is provided with a front and rear position adjusting part and a left and right position adjusting part. During the movement, the front and rear position adjusting part and the left and right position adjusting part respectively trigger the adjusting sliding block to drive the mechanism on the guide plate to move in the hinge cover.

[0013] The other end of the connecting rod is connected to the fixing part through a connecting pin. A fixing plate installed above the connecting rod is also provided in the hinge cover. The fixing plate includes a first fixing block located inside the hinge cover and a second fixing block located outside the hinge cover. The first fixing block is connected to the guide plate through a latch pin, and the second fixing block is connected to the fixing part through a fastener.

[0014] The hinge cover is embedded in the card slot of the frame, and the fixing piece is installed on the step of the door frame.

[0015] The beneficial effects of the present invention are as follows:

[0016] The connecting rod is encapsulated under the hinge cover and during the opening and closing process of the hinge, the connecting rod moves along the guide groove track, and the guide pin of the connecting rod is limited to move in the guide groove. By providing a curved guide groove to guide the swing of the connecting rod, the maximum opening angle of the hinge can be 180°.

[0017] When the hinge is opened at 90°, the rocker arm is stuck by the limit pin, so when the connecting rod continues to move along the guide groove, the rocker arm can no longer contact the connecting rod under the elastic action of the compression spring. This is equivalent to that when the door frame connected to the fixing part is opened to 90°, the connecting rod is not affected by the force of the compression spring and is in a free state. Then the force to open the door will be very light and there will be no resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a door frame opened at a certain angle according to an embodiment of the present invention.

[0019] Figure 2This is a structural schematic diagram of a hinge opened to a certain angle according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the assembly exploded structure of a hinge opened at a certain angle according to an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the structure of a door frame opened to 90 degrees according to an embodiment of the present invention.

[0022] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0023] Figure 6 This is a schematic structural diagram of a door frame opened to 180 degrees according to an embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the exploded structure of the hinge opened to 180 degrees according to an embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of the internal structure of an embodiment of the present invention when the hinge is opened to 180°.

[0026] Fig. 9 This is a schematic structural diagram of a door frame closed according to an embodiment of the present invention.

[0027] Fig.10 It is a schematic diagram of the internal structure of a hinge closure according to an embodiment of the present invention.

[0028] Fig.11 This is a schematic diagram of the exploded structure of the fixing member and the door frame assembly according to an embodiment of the present invention.

[0029] Fig.12 It is a schematic diagram of the cross-sectional structure of the assembly of a fixing member and a door frame according to an embodiment of the present invention.

[0030] Fig.13 The figure is a schematic diagram of the guide plate structure according to an embodiment of the present invention.

[0031] Fig.14 This is a schematic diagram of the exploded structure of the hinge cover assembly when the hinge is opened at a certain angle according to an embodiment of the present invention. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] See also Figure 1-Figure 14A ceiling hinge comprises a hinge cover 1, a fixing member 2 hinged to the hinge cover 1 through a connecting rod 3, a guide plate 4 is arranged inside the hinge cover 1, a curved guide groove 5 is arranged on the guide plate 4, a guide pin 6 embedded in the guide groove 5 is arranged at one end of the connecting rod 3, and the other end of the connecting rod 3 is cooperatively connected with the fixing member 2; the connecting rod 3 is encapsulated under the hinge cover 1 and during the opening and closing process of the hinge, the connecting rod 3 moves along the track of the guide groove 5, and the guide pin 6 of the connecting rod 3 is limited to move in the guide groove 5.

[0034] In this embodiment, the hinge cover 1 includes an upper cover and a lower cover.

[0035] See also Fig.13 The guide groove 5 includes a first groove segment 8, an arc groove segment 9, and a second groove segment 10 which are connected to each other. The arc groove segment 9 is located between the first groove segment 8 and the second groove segment 10.

[0036] The maximum opening angle of the hinge is 180°.

[0037] An elastically swinging rocker arm 12 is also provided in the hinge cover 1, and a limit pin 13 is provided on the swinging track of the rocker arm 12 in the hinge cover 1. When the hinge is opened at 90 degrees, the compression spring 11 pops open the rocker arm 12, and the rocker arm 12 triggers the connecting rod 3 to move along the guide groove 5 during the swinging, and the rocker arm 12 partially swings to the outside of the limit pin 13. When the hinge continues to open, the connecting rod 3 continues to move along the guide groove 5 and separates from the elastically swinging rocker arm 12.

[0038] In this embodiment, the swing rod 12 is rotatably arranged in the hinge cover 1 through a latch. The guide plate 4 is provided with a hole for inserting the latch, and the latch of the swing rod 12 is inserted into the hole of the guide plate 4.

[0039] A compression spring 11 is also provided in the hinge cover 1, and a buffer 16 is also provided in the hinge cover 1 on the swinging track of the rocker arm 12, and a clamping portion 14 for inserting the compression spring 11 is provided on the rocker arm 12; during the opening and closing process of the hinge, the connecting rod 3 contacts the rocker arm 12 and compresses the compression spring 11, and the compression spring 11 is compressed and deformed to generate a reaction force to bounce the rocker arm 12 open, and the other part of the rocker arm 12 contacts the telescopic portion of the buffer 16, and the rocker arm 12 gradually approaches and swings to the periphery of the limit pin 13.

[0040] In this embodiment, the compression spring 11 is a compression spring.

[0041] See also Figure 3 The swing rod 12 is also provided with a contact portion 15 that contacts the connecting rod 3. The contact portion 15 is protrudingly arranged on the swing rod 12, and the outer end surface of the contact portion 15 is arc-shaped to reduce the resistance of friction contact.

[0042] See also Fig.13The guide plate 4 is provided with a first slot 17 for mounting the compression spring 11 , and the guide plate 4 is also provided with a second slot 18 for mounting the buffer member 16 .

[0043] See also Figure 3 The hinge cover 1 is also provided with an adjusting sliding block 19 which is connected to the guide plate 4. The adjusting sliding block 19 is provided with a front and rear position adjusting member and a left and right position adjusting member. During the movement, the front and rear position adjusting member and the left and right position adjusting member respectively trigger the adjusting sliding block 19 to drive the mechanism on the guide plate 4 to move in the hinge cover 1.

[0044] In this embodiment, a slot for inserting a latch is provided on the adjusting sliding block 19 , and the adjusting sliding block 19 is connected to the guide plate 4 through the latch.

[0045] The other end of the connecting rod 3 is connected to the fixing member 2 through a connecting pin 7. A fixing plate 20 installed above the connecting rod 3 is also provided in the hinge cover 1. The fixing plate 20 includes a first fixing block located inside the hinge cover 1 and a second fixing block located outside the hinge cover 1. The first fixing block is connected to the guide plate 4 through a latch, and the second fixing block is connected to the fixing member 2 through a fastener.

[0046] In this embodiment, the fastener is a bolt.

[0047] See also Fig.11 , Fig.12 The hinge cover 1 is embedded in the slot of the frame 21 , and the fixing member 2 is installed on the step 23 of the door frame 22 .

[0048] In this embodiment, the frame 21 is composed of several profiles, an L-shaped angle code is provided on the corresponding step 23 in the frame 21, the fixing member 2 is limitedly installed on the step 23, and the fastener is inserted into the fixing member 2 and the angle code.

[0049] Referring to 10, when the hinge is closed, the swing rod 12 is located near the limit pin 13. When the hinge is activated, the connecting rod 3 moves along the guide groove 5 and toward the swing rod 12, and the swing rod 12 compresses the compression spring 11 (such as Figure 3 As shown in the figure), when the hinge continues to start, the compression spring 11 pops open the rocker arm 12, the rocker arm 12 and the connecting rod 3 move together, and when the rocker arm 12 swings to the limit pin 13, the rocker arm 12 cannot continue to move, while the connecting rod 3 can move freely.

[0050] When the hinge is in the process of opening and closing, the connecting rod 3 moves along the guide groove 5 and toward the rocker arm 12, and the rocker arm 12 compresses the compression spring 11. When the hinge continues to close, the compression spring 11 bounces off the rocker arm 12, and the rocker arm 12 and the connecting rod 3 contact and move together. When the rocker arm 12 swings to the limit pin 13, the rocker arm 12 can no longer move, and the door body is also closed at this time.

[0051] The above is a preferred embodiment of the present invention, which shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for illustrating the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A top and bottom hinge, comprising a hinge cover (1), and a fixing member (2) hingedly connected to the hinge cover (1) via a connecting rod (3), characterized in that: A guide plate (4) is provided inside the hinge cover (1), a bent guide groove (5) is provided on the guide plate (4), a guide pin (6) embedded in the guide groove (5) is provided at one end of the connecting rod (3), and the other end of the connecting rod (3) is cooperatively connected with the fixing member (2); the connecting rod (3) is encapsulated under the hinge cover (1), and during the opening and closing process of the hinge, the connecting rod (3) moves along the track of the guide groove (5), and the guide pin (6) of the connecting rod (3) moves in a limited position in the guide groove (5); An elastically swingable pendulum (12) is also provided in the hinge cover (1), and a limit pin (13) is provided in the hinge cover (1) on the swinging track of the pendulum (12). When the hinge is opened at 90 degrees, the compression spring (11) pops open the pendulum (12), and the pendulum (12) triggers the connecting rod (3) to move along the guide groove (5) during the swinging, and the pendulum (12) partially swings to the periphery of the limit pin (13). When the hinge continues to be opened, the connecting rod (3) continues to move along the guide groove (5) and separates from the elastically swinging pendulum (12).

2. The hinge according to claim 1, characterized in that: The guide groove (5) comprises a first groove section (8), an arc groove section (9), and a second groove section (10) which are connected to each other, and the arc groove section (9) is located between the first groove section (8) and the second groove section (10).

3. The hinge according to claim 1, characterized in that: The maximum opening angle of the hinge is 180°.

4. The hinge according to claim 1, characterized in that: A compression spring (11) is also provided in the hinge cover (1), and a buffer (16) is also provided in the hinge cover (1) on the swinging track of the swing rod (12). The swing rod (12) is provided with a clamping portion (14) for inserting the compression spring (11). During the opening and closing process of the hinge, the connecting rod (3) contacts the swing rod (12) and compresses the compression spring (11). After the compression spring (11) is deformed, a reaction force is generated to bounce the swing rod (12) open. Another part of the swing rod (12) contacts the telescopic portion of the buffer (16), and the swing rod (12) gradually approaches and swings to the periphery of the limit pin (13).

5. The hinge according to claim 1, characterized in that: The swing rod (12) is also provided with a contact portion (15) that comes into contact with the connecting rod (3); the contact portion (15) is protrudingly arranged on the swing rod (12), and the outer end surface of the contact portion (15) is arc-shaped.

6. The top and bottom hinge according to claim 5, characterized in that: The guide plate (4) is provided with a first slot (17) for mounting the compression spring (11), and the guide plate (4) is also provided with a second slot (18) for mounting the buffer member (16).

7. The top and bottom hinge according to claim 6, characterized in that: The hinge cover (1) is further provided with an adjusting slide block (19) which cooperates with the guide plate (4). The adjusting slide block (19) is provided with a front-rear position adjusting member and a left-right position adjusting member. During the movement process, the front-rear position adjusting member and the left-right position adjusting member respectively trigger the adjusting slide block (19) to drive the mechanism on the guide plate (4) to move in the hinge cover (1).

8. The hinge according to claim 1, characterized in that: The other end of the connecting rod (3) is connected to the fixing member (2) via a connecting pin (7). A fixing plate (20) mounted above the connecting rod (3) is also provided in the hinge cover (1). The fixing plate (20) includes a first fixing block located inside the hinge cover (1) and a second fixing block located outside the hinge cover (1). The first fixing block is connected to the guide plate (4) via a latch pin, and the second fixing block is connected to the fixing member (2) via a fastener.

9. The hinge according to claim 1, characterized in that: The hinge cover (1) is embedded in a slot of the frame (21), and the fixing member (2) is installed on a step (23) of the door frame (22).

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