Single-sided four-axle hinge with centrally located door frame

Abstract

The utility model discloses door frame middle -positioned formula single -sided four -axis hinge, including, page piece I, page piece II, connecting piece I, connecting piece II, pivot I, pivot II, pivot III and pivot IV, the front middle part of page piece I is provided with base, the back of page piece II is provided with hidden frame, its characterized in that, base is J, and the horizontal setting of front end curved part has articulated notch, and the longitudinal setting has articulated hole, the longitudinal of connecting piece I and connecting piece II all is arc, and the horizontal all is inverted convex character shape, the length of wide side of inverted convex character shape's connecting piece I and connecting piece II and the length of hidden frame match, and the length of narrow side and articulated notch's length match, the utility model discloses door frame middle -positioned formula single -sided four -axis hinge's beneficial technical effect is effectively improved the strength and rigidity of hinge whole, can install the hinge in the middle part of door frame and the whole gap of door leaf and door frame is small etc.

Description

Technical Field

[0001] This utility model relates to a four-axis hinge technology for furniture or doors and windows, and particularly to a single-sided four-axis hinge with a centrally located frame in a door frame. Background Technology

[0002] Four-axis hinges are gaining increasing attention in the home improvement and furniture manufacturing industries due to their superior features, such as being able to be concealed within door frames, having a small door gap of only 2-3mm, and being able to blend seamlessly with the wall. Utility model patent CN 222863155 U discloses a relatively typical four-axis hinge (see appendix). Figure 1 , 2 3. In the diagram, 1 is the first hinge element, 2 is the second hinge element, 22 is the second mounting part, 31 is the first connector, 32 is the second connector, 33 is the base, 41 is the first pivot, 42 is the second pivot, 43 is the third pivot, 44 is the fourth pivot, 50 is the door leaf profile, 60 is the door frame, 61 is the mounting part, 120 is the decorative panel, and a is the weak point. As shown in the diagram, this four-axis hinge consists of a first hinge element (base), a second hinge element, a first connector, and a second connector, connected by four pivots to form a double-layer hinge structure. This effectively improves the hinge's load-bearing capacity and allows the door leaf (or window leaf) to have a larger opening and closing angle (up to 105º). However, this four-axis hinge also has the following drawbacks:

[0003] 1. Some connecting parts and pivots are relatively short, resulting in lower overall strength and rigidity;

[0004] 2. Some connecting surfaces are relatively thin (as shown in the attached document). Figure 2 (at point a), resulting in lower strength;

[0005] 3. The first page's closing surface did not have a recessed platform, causing the second page to protrude outside the first page's closing surface after closing, affecting the closing gap;

[0006] 4. The base is basically T-shaped, requiring a large clearance when closed, which makes the groove frame of the first page larger and the overall volume larger. Summary of the Invention

[0007] To address the above problems, this utility model proposes a door frame-mounted single-sided four-axis hinge.

[0008] This utility model relates to a frame-mounted single-sided four-axis hinge, comprising: a hinge I, a hinge II, a connector I, a connector II, a pivot I, a pivot II, a pivot III, and a pivot IV; a base is provided in the center of the front of the hinge I; a hidden frame is provided on the rear side of the hinge II; the base is J-shaped, with a hinge groove in the horizontal direction and a hinge hole in the vertical direction of the curved front end; the longitudinal direction of the connector I and connector II is arc-shaped, and the horizontal direction is an inverted convex shape; the length of the wide side of the inverted convex connector I and connector II matches the length of the hidden frame, and the length of the narrow side matches the length of the hinge groove; furthermore, the curvature of the J-shaped curved part of the base matches the curvature of the connector I and connector II, that is, when the hinge is in the open, closed, or open-closed state, the base, connector I, and connector II will not interfere with each other.

[0009] Furthermore, the front of the page II is provided with a recessed platform, and the size and depth of the recessed platform match the outline size and thickness of the page I.

[0010] Furthermore, wear-resistant sleeves are fitted at both ends of the rotating shafts I, II, III and IV. The wear-resistant sleeves are T-shaped and have a through hole in the middle for mounting the rotating shafts.

[0011] Furthermore, the wear-resistant sleeve is made of hard wear-resistant material, stainless steel, or copper-based oil-impregnated bearing or pure copper.

[0012] The beneficial technical effects of this utility model of a centrally mounted single-sided four-axis hinge for door frames are that it effectively improves the overall strength and rigidity of the hinge, enables the hinge to be installed in the middle of the door frame, and reduces the overall gap between the door leaf and the door frame. Attached Figure Description

[0013] Appendix Figure 1 This is a 3D schematic diagram of a four-axis hinge in existing technology;

[0014] Appendix Figure 2 This is a three-dimensional schematic diagram of the existing four-axis hinge in the separated state;

[0015] Appendix Figure 3 This is a partial 3D schematic diagram of a four-axis hinge in existing technology;

[0016] Appendix Figure 4 This is an exploded three-dimensional schematic diagram of the centrally located single-sided four-axis hinge in the door frame of this utility model;

[0017] Appendix Figure 5 This is another exploded three-dimensional schematic diagram of the centrally located single-sided four-axis hinge in the door frame of this utility model;

[0018] Appendix Figure 6 This is a longitudinal schematic diagram of the door frame with a centrally located single-sided four-axis hinge in the open state.

[0019] Appendix Figure 7 This is a longitudinal schematic diagram of the closed state of the centrally located single-sided four-axis hinge in the door frame of this utility model;

[0020] Appendix Figure 8 This is a three-dimensional schematic diagram of the open state of the centrally located single-sided four-axis hinge in the door frame of this utility model;

[0021] Appendix Figure 9 This is a three-dimensional schematic diagram of the closed state of the centrally located single-sided four-axis hinge in the door frame of this utility model.

[0022] In the diagram, 1 is the first page component, 2 is the second page component, 22 is the second mounting part, 31 is the first connector, 32 is the second connector, 33 is the base, 41 is the first pivot, 42 is the second pivot, 43 is the third pivot, 44 is the fourth pivot, 50 is the door leaf profile, 60 is the door frame, 61 is the mounting component, 120 is the decorative panel, and a is the weak point; 1-1 is page component I, 1-2 is the base, 2-1 is page component II, 2-2 is the hidden frame, 2-3 is the recessed platform, 3-1 is connector I, 3-2 is connector II, 4-1 is pivot I, 4-2 is pivot II, 4-3 is pivot III, 4-4 is pivot IV, and 5-1 is the wear-resistant sleeve.

[0023] The following description, in conjunction with the accompanying drawings and specific embodiments, further illustrates the present invention's frame-mounted single-sided four-axis hinge. Detailed Implementation

[0024] See appendix Figure 4-9As shown in the figure, the present invention relates to a door frame-mounted single-sided four-axis hinge, comprising: a hinge I 1-1, a hinge II 2-1, a connector I 3-1, a connector II 3-2, a pivot I 4-1, a pivot II 4-2, a pivot III 4-3, and a pivot IV 4-4; a base 1-2 is provided in the center of the front of the hinge I; a hidden frame 2-2 is provided on the rear side of the hinge II; the base is J-shaped, with a hinge groove in the horizontal direction and a hinge hole in the vertical direction of the curved front end; the longitudinal direction of the connector I and the connector II is arc-shaped, and the horizontal direction is an inverted convex shape; the length of the wide side of the inverted convex connector I and the connector II matches the length of the hidden frame, and the length of the narrow side matches the length of the hinge groove; furthermore, the curvature of the J-shaped curved part of the base matches the curvature of the connector I and the connector II, that is, when the hinge is in the open, closed, or open-closed state, the base, connector I, and connector II will not interfere with each other. The connectors I and II of this utility model's frame-mounted single-sided four-axis hinge both adopt an inverted convex structure, effectively increasing the length and thickness of the connectors and thus significantly improving the overall strength and rigidity of the hinge. Furthermore, the base, connectors I and II all have arc-shaped longitudinal sections, and their curvatures match each other, avoiding the problem of thin individual connection surfaces and greatly reducing the volume of the concealed frame for the hidden connectors. This allows the frame-mounted single-sided four-axis hinge to be installed in the middle of the door frame, and connector I can be installed in the middle of the door leaf post, instead of on the front or rear sides of the door leaf post. Therefore, this utility model's four-axis hinge is referred to as a frame-mounted four-axis hinge.

[0025] As one preferred technical solution, the front of the page member II is provided with a recessed platform 2-3, and the size and depth of the recessed platform match the outline size and thickness of the page member I. Providing a recessed platform on the front of the page member II allows the page member I to enter the recessed platform when the hinge is closed (see appendix). Figure 9 This design allows hinge I to be concealed within the recessed area of ​​hinge II, resulting in a smaller overall gap between the door leaf and the door frame, reaching 1-2mm. Because this four-axis hinge does not require a groove on the door leaf post to accommodate hinge I during installation, but only a groove on one side (edge) of the door frame to accommodate the hidden frame of hinge II, this four-axis hinge is also referred to as a frame-mounted single-sided four-axis hinge.

[0026] As one of the preferred technical solutions, wear-resistant sleeves 5-1 are fitted at both ends of rotating shafts I, II, III, and IV. The wear-resistant sleeves are T-shaped with a through hole in the middle for mounting the rotating shafts. Using wear-resistant sleeves can effectively reduce resistance and noise while ensuring rotational lubrication and load-bearing capacity.

[0027] As one of the preferred technical solutions, the wear-resistant sleeve is made of hard wear-resistant plastic, stainless steel, or a copper-based oil-impregnated bearing. Considering the characteristics of the shaft, which needs to bear weight and rotate, using hard wear-resistant materials, copper, or stainless steel for the wear-resistant sleeve is more economical. To further improve load-bearing and lubrication performance, a copper-based oil-impregnated bearing can also be used; however, this will increase the cost.

[0028] Obviously, the beneficial technical effects of this utility model of a door frame-mounted single-sided four-axis hinge are that it effectively improves the overall strength and rigidity of the hinge, enables the hinge to be installed in the middle of the door frame, and reduces the overall gap between the door leaf and the door frame.

Claims

1. A frame-mounted single-sided four-axis hinge, characterized in that, The four-axis hinge includes a hinge element I, a hinge element II, a connector I, a connector II, a pivot I, a pivot II, a pivot III, and a pivot IV. A base is provided at the center of the front of hinge element I. A hidden frame is provided on the rear side of hinge element II. The base is J-shaped, with a hinge slot in the transverse direction and a hinge hole in the longitudinal direction of the curved front end. Connectors I and II are both arc-shaped in the longitudinal direction and inverted convex shapes in the transverse direction. The length of the wide side of the inverted convex connectors I and II matches the length of the hidden frame, and the length of the narrow side matches the length of the hinge slot. Furthermore, the curvature of the J-shaped curved portion of the base matches the curvature of connectors I and II, meaning that when the hinge is in an open, closed, or open / closed state, the base, connectors I and II will not interfere with each other.

2. The door frame-mounted single-sided four-axis hinge according to claim 1, characterized in that, The front of the page II is provided with a recessed platform, and the size and depth of the recessed platform match the outline size and thickness of the page I.

3. The door frame-mounted single-sided four-axis hinge according to claim 1 or 2, characterized in that, Wear-resistant sleeves are fitted at both ends of shafts I, II, III and IV. The wear-resistant sleeves are T-shaped and have a through hole in the middle for mounting the shafts.

4. The door frame-mounted single-sided four-axis hinge according to claim 3, characterized in that, The wear-resistant sleeve is made of copper or stainless steel, or is a copper-based oil-impregnated bearing.

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