Hinge for door

Abstract

The utility model relates to the field of hinges, in particular to a hinge for a door, which comprises a movable shaft core and a plurality of split hinge bodies sleeved on the movable shaft core, each split hinge body comprises an end piece and a plurality of middle pieces, each end piece and each middle piece comprise an axial portion and an extension portion, and the extension portions are arranged on the end pieces and the middle pieces. The axial part of the end piece comprises a sealing piece and a sealing cavity, the sealing piece is matched with the sealing cavity to form sleeving negative pressure, and the extension part is used for fixing the split hinge; the split hinge is used for solving the problems that a split hinge is unstable in assembling and inserting connection, inconvenient to assemble and unbalanced in stress after being assembled. The mounting convenience of the hinge structure and the door is improved through the split hinge; the movable shaft core and the split hinge are stably connected through sleeving negative pressure formed by the sealing pieces and the sealing cavities on the end pieces, so that the stress balance and the insertion stability degree of the hinge structure are enhanced, and the service life of the hinge structure is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of hinges, and more specifically, to a hinge for a door. Background Art

[0002] The existing hinges are divided into flag type and bamboo type. The main axis of the flag type hinge is a cantilever structure, and the main axis core is subjected to unilateral force. After long-term use, the flag type hinge is prone to deformation; the bamboo type hinge can be subjected to bilateral force, but during the installation process of the bamboo type hinge, it is necessary to first fix the bamboo type hinge at the corresponding positions of the door and the door frame respectively, and then lift the door to complete the installation by aligning the two bamboo type hinges. Therefore, although the bamboo type hinge can solve the unilateral force problem in the flag type hinge and make the force on the hinge balanced, it is more difficult to install; moreover, whether it is a flag type hinge or a bamboo type hinge, during long-term use, the main axis core will be repeatedly twisted after repeated folding of the hinge, affecting its structural stability, thereby affecting the force and service life of the hinge.

[0003] How to overcome the technical problems existing in the existing hinges, design a hinge that takes into account the advantages of both, and enhance the structural stability of the main shaft core is a technical problem that needs to be solved urgently in this field. Utility Model Content

[0004] The utility model aims to overcome at least one defect (deficiency) of the above-mentioned prior art and provide a door hinge for solving the problems of unstable assembly and plugging of split hinges, inconvenient assembly and uneven force after assembly.

[0005] The technical solution adopted by the utility model is a door hinge, comprising a movable axis core and a plurality of split hinges sleeved on the movable axis core, wherein the split hinge comprises an end piece and a plurality of middle pieces, the end piece and the middle piece both comprise an axial portion and an extension portion, the axial portion of the end piece comprises a closing piece and a closing cavity, the closing piece matches the closing cavity to form a sleeve negative pressure, and the extension portion is used to fix the split hinge.

[0006] It is beneficial to improve the installation convenience of the hinge structure and the door through the split hinge; it is beneficial to form hinge structures of various sizes through the cooperation of several intermediate parts and end parts to adapt to doors of different sizes; it is beneficial to form a sleeve negative pressure through the closing part and the closing cavity on the end part, so that after the movable axis core is inserted into the split hinge, the closing part is used to tighten the closing cavity to form a stable connection between the movable axis core and the split hinge, thereby enhancing the force balance of the hinge structure and extending its service life.

[0007] The closed cavity is located at a side away from the middle piece, and comprises a thread and an air vent. The thread is arranged on the inner wall of the closed cavity, and the air vent comprises a plurality of air vents symmetrically arranged on the thread.

[0008] It is beneficial to realize exhaust when the movable shaft core is plugged into the closed cavity through the air vent; then the connection with the closing member is realized through the thread in the closed cavity, and a sleeve negative pressure is formed; it is beneficial to realize exhaust at the same time when plugged in through multiple air vents, and it is more convenient to combine the split hinge installed on the door and the split hinge installed on the door frame.

[0009] The axial portion of the end piece further comprises an installation cavity, which is located on a side close to the middle piece and is used for matching and positioning the movable shaft core. A vent hole is provided on the connecting surface between the installation cavity and the closed cavity.

[0010] It is beneficial to insert and position the two ends of the movable shaft core in the end piece through the installation cavity so that the two ends of the movable shaft core will not move arbitrarily in the end piece; it is beneficial to squeeze out the air inserted into the installation cavity as the movable shaft core is inserted through the vent hole, thereby enhancing the structural stability of the movable shaft core and the split hinge.

[0011] A connecting groove is provided between the axial portion of the end piece and the connecting surface of the closing piece, which is used to match the closing piece to form a smooth end surface. A vent corresponding to the air passage is provided on the side of the closing piece.

[0012] It is beneficial to make the closure piece completely embedded in the end face of the axial part of the end piece through the connecting groove, so as to avoid the occurrence of gaps at the connection of the closure piece where dust falls and affects the sealing effect; it is beneficial to make the vent and the air duct correspond to each other, so that when the closure piece is rotated and tightened, the gas in the closed cavity can be discharged along the vent in time, which is convenient for the screwing in of the closure piece.

[0013] The extension portion includes a folded plate and a flat plate, the folded plate includes a first right angle, the flat plate includes a second right angle, and the first right angle and the second right angle form a Z-shaped structure.

[0014] It is beneficial for the folding plate to be completely fitted with the right-angled edge of the door frame or the door, so that the split hinge structure is subjected to balanced force; it is beneficial for the first right angle and the second right angle to form a Z-shaped structure, so as to balance the extrusion force between the extension part and the axial part, and avoid the extension part extending directly from one side of the axial part to concentrate the force, thereby affecting its service life.

[0015] The flat plate is provided with a plurality of through holes arranged in a triangular pattern, and a receiving groove is provided at the connection between the folding plate and the flat plate.

[0016] It is beneficial to stably fix the extension part on the door or door frame through the triangularly arranged perforations; it is beneficial to squeeze out the debris and dust in the process of fitting the flat plate and the door or door frame through the receiving groove to avoid affecting the fitting degree of the flat plate.

[0017] The front and rear of the flat plate include an arcuate surface and a flat surface, and the arcuate surface of the end piece and the arcuate surface of the middle piece face oppositely.

[0018] It is beneficial to distinguish the front and back sides of the split hinge through the curved surface and the flat surface on the flat plate, so that the corresponding installation direction of the split hinge can be quickly distinguished during the installation process; it is beneficial to have the curved surfaces of the end piece and the middle piece facing in opposite directions, so that when the end piece is installed on the door, the middle piece is installed on the door frame, and when the end piece is installed on the door frame, the middle piece is installed on the door.

[0019] The flat surface of the intermediate piece is provided with convex strips, and the convex strips are used for clamping and positioning.

[0020] It is helpful to position the middle piece on a door of a specific model through the convex strip snap-in connection, so that the installation of the middle piece is more accurate and stable.

[0021] The lengths of the two folding surfaces of the folding plate in the extension direction are both L1, the length of the straight surface of the flat plate in the extension direction is L2, the diameter of the axial portion is D, D / 2≤L1<D, D<L2≤2D.

[0022] It is beneficial to make the outer extension of the folding plate smaller than the diameter of the axial part, so that when the force is transmitted from the axial part to the outer extension, a balancing effect can be achieved through the outer extension of the folding plate; it is beneficial to make the outer extension of the flat plate larger than the diameter of the axial part, so as to increase the contact area between the flat plate and the door or door frame, avoid force concentration, and thus affect its service life.

[0023] The length of the flat plate of the middle piece in the extension direction is L3, and the length of the flat plate of the end piece in the extension direction is L4, where L3<L4.

[0024] It is helpful to match a specific model of door or door frame through the flat plate extension of the middle piece and the flat plate extension of the end piece.

[0025] Compared with the prior art, the beneficial effects of the utility model are: the installation convenience of the hinge structure and the door is improved through the split hinge; the sleeve negative pressure formed by the closing piece and the closed cavity on the end piece is used to form a stable connection between the movable axis core and the split hinge, thereby enhancing the force balance and plug-in stability of the hinge structure, thereby extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a top view of the structure of the utility model.

[0027] Figure 2 It is a structural front view of the utility model.

[0028] Figure 3 It is a structural side view of the utility model.

[0029] Figure 4 The present invention is a top view of a preferred embodiment of a hinge structure installed on a door or door frame.

[0030] Figure 5 The present invention is a top view of a preferred embodiment of a hinge structure installed on a door or door frame.

[0031] Figure 6 The present invention is a top view of a preferred embodiment of a hinge structure installed on a door or door frame.

[0032] Figure 7 The present invention is a top view of a preferred embodiment of a hinge structure installed on a door or door frame.

[0033] Figure 8 The present invention is a top view of a preferred embodiment of a hinge structure installed on a door or door frame.

[0034] Description of the drawings: movable shaft core 10, split hinge 20, end piece 100, middle piece 200. DETAILED DESCRIPTION

[0035] The drawings of the present invention are only used for illustrative purposes and cannot be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0036] Example

[0037] like Figure 1-8 As shown, this embodiment provides a door hinge, including a movable axis core 10 and a plurality of split hinges 20 sleeved on the movable axis core 10, wherein the split hinge 20 includes an end piece 100 and a plurality of middle pieces 200, the end piece 100 and the middle piece 200 both include an axial portion and an extension portion, the axial portion of the end piece 100 includes a closing piece and a closing cavity, the closing piece matches the closing cavity to form a sleeve negative pressure, and the extension portion is used to fix the split hinge 20.

[0038] In this embodiment, the movable axis core 10 is a detachable cylindrical part; the split hinge 20 includes three, two end parts 100 and one middle part 200, and the end parts 100 and the middle part 200 are respectively installed on the door or door frame; the split hinge 20 is an alloy part in which the axial part and the extension part are cast as one, the axial part is sleeved on the outside of the cylindrical part, and the extension part is fixed on the door or door frame; the closing part is a plug, which is used to block the port of the end part 100 to prevent dust from falling and affecting the sleeve negative pressure in the closed cavity, thereby affecting the connection stability of the movable axis core 10; the sleeve negative pressure in the closed cavity enhances the installation convenience and stability of the split hinge 20.

[0039] The closed cavity is located at a side away from the middle piece 200 , and includes a thread and an air vent. The thread is arranged on the inner wall of the closed cavity, and the air vent includes a plurality of threads symmetrically arranged on the thread.

[0040] In this embodiment, the thread in the closed cavity is used to connect with the thread of the closure member to prevent the closure member from falling off, thereby affecting the structural stability of the split hinge 20; the air duct includes four threads, which are evenly distributed on the thread so that the thread forms four vertical grooves. When the closure member is screwed into the closed cavity, the air in the closed cavity is discharged through the air duct, so that the negative pressure formed by the closed cavity and the closure member enhances the structural stability of the split hinge 20.

[0041] The axial portion of the end piece 100 further includes a mounting cavity, which is located on a side close to the middle piece 200 and is used to match and position the movable shaft core 10 . A vent hole is provided on the connecting surface between the mounting cavity and the closed cavity.

[0042] In this embodiment, the cavity of the installation cavity completely matches the volume of the movable shaft core 10. When the movable shaft core 10 is inserted into the installation cavity, the air in the installation cavity is discharged through the vent hole, and the vent hole is connected to the closed cavity, and the air continues to be discharged along the air duct in the closed cavity.

[0043] A connecting groove is provided on the connecting surface between the axial portion of the end piece 100 and the closing piece so as to match the closing piece to form a smooth end surface. A vent corresponding to the air passage is provided on the side surface of the closing piece.

[0044] In this embodiment, the axial portion of the end piece 100 has two end faces, namely, an end face away from the middle piece 200 and an end face close to the middle piece 200. A connecting groove is provided on the end face away from the middle piece 200, and the connecting groove is fitted with the end face of the closing piece and forms a smooth connection on the end face of the closing piece; the end face of the closing piece is a thick circular cover plate, and a vent is provided on the side of the closing piece, and the air discharged along the air duct continues to be discharged along the vent; the vent provided on the side prevents dust between the door and the door frame from falling vertically into the closing piece, thereby affecting the sealing effect.

[0045] The extension portion includes a folded plate and a flat plate, the folded plate includes a first right angle, the flat plate includes a second right angle, and the first right angle and the second right angle form a Z-shaped structure.

[0046] In this embodiment, the folding plate and the flat plate of the extended part are an integrated structure, the folding plate is a right-angle folding structure, the flat plate is perpendicular to the straight outer edge of the folding plate and is opposite to the right angle of the folding plate, thereby forming a Z-shaped structure, so that the folding plate and the flat plate evenly share the extrusion force between the door and the door frame, thereby extending the service life of the split hinge 20.

[0047] The flat plate is provided with a plurality of through holes arranged in a triangular pattern, and a receiving groove is provided at the connection between the folding plate and the flat plate.

[0048] In this embodiment, the perforations on the flat plate are arranged in a triangular shape, making the installation more stable; a receiving groove is provided at the connection between the folding plate and the flat plate, so that during the installation of the split hinge 20, the debris and dust attached to the flat plate can be squeezed into the receiving groove, thereby preventing the flat plate from warping or becoming uneven, which may affect the structural stability.

[0049] The front and rear of the flat plate include an arcuate surface and a flat surface, and the arcuate surface of the end piece 100 and the arcuate surface of the middle piece 200 face oppositely.

[0050] In this embodiment, the front and back surfaces of the flat plate are respectively an arcuate surface and a flat surface, so that it is convenient to quickly fit the flat surface to the door or door frame for installation; the front surface of the end piece 100 and the front surface of the middle piece 200 are in opposite directions, so that the installer can quickly determine whether the split hinge 20 is the end piece 100 or the middle piece 200 based on the front and back surfaces, and then determine whether the split hinge 20 is installed on the door or the door frame.

[0051] The flat surface of the intermediate piece 200 is provided with convex strips, and the convex strips are used for clamping and positioning.

[0052] In this embodiment, Figure 7As shown, a positioning groove is provided on a door of a certain model. When the intermediate member 200 is installed on the door of this model, the convex strip is directly engaged with the positioning groove, which helps to quickly install the split hinge 20 and enhance the stability of the installation.

[0053] The lengths of the two folding surfaces of the folding plate in the extension direction are both L1, the length of the straight surface of the flat plate in the extension direction is L2, the diameter of the axial portion is D, D / 2≤L1<D, D<L2≤2D.

[0054] In this embodiment, the outward extension of the folding plate is smaller than the diameter of the axial portion, so that when the force is transmitted from the axial portion to the outward extension, a balancing effect is achieved through the outward extension of the folding plate; it is beneficial to increase the contact area between the flat plate and the door or door frame by making the outward extension of the flat plate larger than the diameter of the axial portion, thereby avoiding force concentration and affecting its service life.

[0055] The length of the flat plate of the intermediate piece 200 in the extension direction is L3, and the length of the flat plate of the end piece 100 in the extension direction is L4, where L3<L4.

[0056] In this embodiment, a specific type of door or door frame is matched by the flat plate outer extension of the middle member 200 and the flat plate outer extension of the end member 100 .

[0057] Obviously, the above embodiments of the utility model are only examples for clearly explaining the technical solution of the utility model, and are not intended to limit the specific implementation methods of the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the claims of the utility model shall be included in the protection scope of the claims of the utility model.

Claims

1. A door hinge, comprising a movable shaft core and a plurality of split hinges sleeved on the movable shaft core, characterized in that: The split hinge includes an end piece and a plurality of middle pieces, wherein the end piece and the middle piece both include an axial portion and an extension portion, the axial portion of the end piece includes a closing piece and a closing cavity, the closing piece matches the closing cavity to form a sleeve negative pressure, and the extension portion is used to fix the split hinge.

2. A door hinge according to claim 1, characterized in that: The closed cavity is located at a side away from the middle piece, and comprises a thread and an air vent. The thread is arranged on the inner wall of the closed cavity, and the air vent comprises a plurality of air vents symmetrically arranged on the thread.

3. A door hinge according to claim 1, characterized in that: The axial portion of the end piece further comprises an installation cavity, which is located on a side close to the middle piece and is used for matching and positioning the movable shaft core. A vent hole is provided on the connecting surface between the installation cavity and the closed cavity.

4. A door hinge according to claim 2, characterized in that: A connecting groove is provided between the axial portion of the end piece and the connecting surface of the closing piece, which is used to match the closing piece to form a smooth end surface. A vent corresponding to the air passage is provided on the side of the closing piece.

5. The door hinge according to claim 1, characterized in that: The extension portion includes a folded plate and a flat plate, the folded plate includes a first right angle, the flat plate includes a second right angle, and the first right angle and the second right angle form a Z-shaped structure.

6. A door hinge according to claim 5, characterized in that: The flat plate is provided with a plurality of through holes arranged in a triangular pattern, and a receiving groove is provided at the connection between the folding plate and the flat plate.

7. A door hinge according to claim 5, characterized in that: The front and rear of the flat plate include an arcuate surface and a flat surface, and the arcuate surface of the end piece and the arcuate surface of the middle piece face oppositely.

8. A door hinge according to claim 7, characterized in that: The flat surface of the intermediate piece is provided with convex strips, and the convex strips are used for clamping and positioning.

9. The door hinge according to claim 5, characterized in that: The lengths of the two folding surfaces of the folding plate in the extension direction are both L1, the length of the straight surface of the flat plate in the extension direction is L2, the diameter of the axial portion is D, D / 2≤L1<D, D<L2≤2D.

10. The door hinge according to claim 5, characterized in that: The length of the flat plate of the middle piece in the extension direction is L3, and the length of the flat plate of the end piece in the extension direction is L4, where L3<L4.

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