A cross hinge
By employing a hinge mechanism design in the cross hinge, including staggered crank arms, base arms, and driven arms, and connecting them with a central shaft and pins, the problem of machining accuracy is solved, resulting in more stable door opening and closing actions and extended service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 黎劲韬
- Filing Date
- 2025-07-11
- Publication Date
- 2026-06-16
AI Technical Summary
When the existing cross hinges are not manufactured with accurate precision, the positioning accuracy of the crank arm components between the seats is poor, resulting in gaps that affect the stability of the opening and closing action and the service life. At the same time, it is difficult to achieve the symmetry and parallelism of the door.
The design employs an articulated mechanism, which includes staggered left and right crank arms, base arms, and driven arms connected by a central shaft and pins. This ensures precise positioning and synchronous movement between the crank arms, avoiding limitations imposed by the machining accuracy of the base body.
It improves the synchronization and parallelism of the hinges, resulting in more stable opening and closing actions, extending service life, and enhancing the symmetry and parallelism of the door.
Smart Images
Figure CN224363791U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a cross hinge, which is used as a folding connector for folding products such as doors and windows. Background Technology
[0002] Cross hinges are a type of concealed hinge, often used as connectors in products such as doors and windows. Because products using cross hinges do not show the hinges from the outside, they are more aesthetically pleasing and are therefore widely used.
[0003] Traditional cross hinges use slotted positioning, with multiple slots on two bases for hinged arm assemblies. The door opens by rotating relative to the frame through the hinged arm assemblies. However, because the slots on the two bases are staggered, manufacturing is challenging. Inaccurate manufacturing leads to poor positioning accuracy between the arm assemblies and the bases, creating gaps that affect opening and closing, cause wear, and shorten service life. Furthermore, since the arm assemblies are hinged only through slots, the relative rotational positions of the two bases can vary, making it difficult for the cross hinge to maintain stable symmetry and parallelism when the door is open, thus affecting the door's opening and closing. Summary of the Invention
[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a novel cross hinge.
[0005] The technical solution adopted by this utility model to solve its technical problem is:
[0006] A cross hinge includes two seats for a recessed door and a door frame, and a hinge mechanism that rotatably connects the two seats. The seats are hollow inside, and the hinge mechanism is arranged inside the cavity. It includes two sets of curved arms arranged alternately to the left and right, two sets of base arms to the left and right, and two sets of driven arms to the left and right. The middle of the two sets of curved arms is hinged through a central axis. The two ends of the left curved arm are hinged to the ends of the left driven arm and the right base arm, respectively. The two ends of the right curved arm are hinged to the ends of the right driven arm and the left base arm, respectively. The left base arm is hinged to the other end of the left driven arm, and the right base arm is hinged to the other end of the right driven arm. The two seats are fixedly connected to the left and right base arms, respectively, and the two seats are symmetrically arranged.
[0007] The crank arm, base arm, and driven arm are all hinged together by pins, with the pins at both ends of the base arm passing through the upper and lower parts of the seat body to fix the seat body and the base arm.
[0008] One end of the crank arm is a hinge part I that curves downward and connects to the driven arm, and the other end is a hinge part II that extends downward at a turning angle and connects to the base arm. The central rotating part is located between the hinge part I and the hinge part II, and the left and right crank arms are rotated by passing through the central shaft.
[0009] The beneficial effects of this utility model are as follows: The hinge mechanism of this utility model consists of a crank arm, a base arm, and a driven arm. The base arm and the driven arm realize the positioning and clamping of the crank arm, so that the staggered left and right crank arms are precisely positioned and arranged together in the cavity of the seat body. There is no gap between the crank arms and they are no longer limited by the machining accuracy of the seat body. Moreover, the driven arm connects the left and right base arms and the left and right crank arms for linkage, so that the two seats fixed on the base arm can move relatively synchronously and symmetrically, thereby improving the synchronization and parallelism of the hinge and achieving a better and more stable opening and closing action. Attached Figure Description
[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0011] Figure 1 This is a schematic diagram of the structure of this utility model in its open state;
[0012] Figure 2 This is a schematic diagram of the structure of this utility model in its closed state;
[0013] Figure 3 This is a schematic diagram of the hinge mechanism of this utility model;
[0014] Figure 4 This is a breakdown diagram of the present invention;
[0015] Figure 5 This is a schematic diagram of the motion state of the hinge mechanism of this utility model. Detailed Implementation
[0016] Reference Figures 1 to 4 A cross hinge, comprising two seats 1 for a recessed door and a door frame, the interior of the seat 1 being a cavity 11, the two seats being rotatably connected by a hinge mechanism 2 arranged within the cavity 11, the hinge mechanism 2 comprising two sets of left and right staggered curved arms 4, two sets of left and right base arms 5, and two sets of left and right driven arms 6. The two sets of curved arms 4 are hinged at the middle via a central shaft 3. The two ends of the left curved arm 41 are hinged to the ends of the left driven arm 61 and the right base arm 52, respectively. The two ends of the right curved arm 42 are hinged to the ends of the right driven arm 62 and the left base arm 51, respectively. The left base arm 51 is hinged to the other end of the left driven arm 61, and the right base arm 52 is hinged to the other end of the right driven arm 62, forming a hinge mechanism 2. The curved arms 4 are positioned and clamped through the base arm 5 and the driven arm 6, so that the staggered left and right curved arms are precisely positioned. They are then arranged together in the cavity 11 of the seat body 1. There is no gap between the left and right curved arms, and they are no longer limited by the machining accuracy of the seat body. Figure 5As shown, when the left seat is pushed, one end of the left base arm 51 rotates relative to one end of the left curved arm 41, and the other end of the left base arm 51 drives the right base arm 42 through the left driven arm 61. The right base arm 42 links the right driven arm 62 and the right base arm 52 on the right seat, so that the two seats 1, which are fixedly connected to the left and right base arms respectively, can move relatively synchronously and symmetrically, thereby improving the synchronization and parallelism of the hinge and achieving a better and more stable opening and closing action.
[0017] As a preferred embodiment of this utility model, the crank arm 4, the base arm 5 and the driven arm 6 are all hinged together by pins 7, wherein the pins 7 at both ends of the base arm 5 pass through the upper and lower parts of the seat body 1, thereby fixing the seat body 1 and the base arm 5 and simplifying the installation of the hinge mechanism 2.
[0018] Preferably, one end of the crank arm 4 is a hinge part I that curves downward and connects to the driven arm 6, and the other end is a hinge part II that extends downward at a turning angle and connects to the base arm 5. The hinge part I and the hinge part II are connected by a central rotating part. The left and right crank arms are rotated and connected by a central shaft 3. The arrangement of the above structure makes the crank arm 4 more mechanically compliant, and the left and right driven arms 6 and base arms 5 can more easily achieve linkage.
Claims
1. A cross hinge, comprising two seats (1) recessed into a door and a door frame, and a hinge mechanism (2) rotatably connecting the two seats, characterized in that: The seat (1) has a cavity (11) inside. The hinge mechanism (2) is arranged in the cavity (11) and includes two sets of curved arms (4) arranged alternately on the left and right, two sets of base arms (5) on the left and right, and two sets of driven arms (6) on the left and right. The middle of the two sets of curved arms (4) are hinged through a central shaft (3). The two ends of the left curved arm (41) are hinged to the ends of the left driven arm (61) and the right base arm (52) respectively. The two ends of the right curved arm (42) are hinged to the ends of the right driven arm (62) and the left base arm (51) respectively. The left base arm (51) is hinged to the other end of the left driven arm (61), and the right base arm (52) is hinged to the other end of the right driven arm (62). The two seats (1) are fixedly connected to the left and right base arms respectively, and the two seats are arranged symmetrically.
2. The cross hinge according to claim 1, characterized in that: The crank arm (4), base arm (5) and driven arm (6) are all hinged by pins (7), wherein the pins (7) at both ends of the base arm (5) pass through the upper and lower parts of the seat (1) to fix the seat (1) and the base arm (5).
3. The cross hinge according to claim 1 or 2, characterized in that: One end of the crank arm (4) is a hinge part I that transitions downward in an arc and is hinged to the driven arm (6), and the other end is a hinge part II that extends downward at a turning angle and is hinged to the base arm (5). The hinge part I and the hinge part II are connected by a central rotating part, and the left and right crank arms are rotated by passing through the central shaft (3).