Automatic door closing positioning hinge

Abstract

The utility model discloses an automatic door closing positioning hinge which comprises a hinge shaft, a door leaf hinge plate and a door frame hinge plate, an upper shaft sleeve is arranged on one side of the door leaf hinge plate, and a lower shaft sleeve is arranged on one side of the door frame hinge plate. A positioning assembly is arranged at the upper end of the hinge shaft and comprises a belleville spring and a positioning piece which are arranged at the upper end of the hinge shaft in a sleeving mode from top to bottom, the positioning piece can move movably in the axial direction of the hinge shaft, the upper end of the positioning piece abuts against the belleville spring, and four positioning protrusions are arranged at the lower end of the positioning piece at intervals. Four positioning grooves corresponding to the four positioning protrusions are formed in the upper end face of the upper shaft sleeve, and first inclined faces and second inclined faces are obliquely arranged on the front side walls and the rear side walls of the positioning grooves correspondingly. The door leaf can be positioned at the door opening and closing positions, and meanwhile, the door leaf can be automatically and continuously opened and automatically closed; and a door stopper and a door closer do not need to be additionally mounted, so that the accessory cost of door and window mounting is effectively reduced, the door and window mounting procedure is simplified, and the mounting time is saved.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, and more specifically, to an automatic door closing and positioning hinge. Background Technology

[0002] A hinge, also known as a hinge leaf, is a component that connects two parts of an object and allows them to move. Hinges are commonly used in cabinet doors, windows, and doors.

[0003] Existing hinges only serve to connect doors and windows, with a single function. In order to keep doors and windows stably open, it is often necessary to install door catches on the wall and door leaf to prevent wind. In addition, in order to realize the automatic closing function of doors and windows, people also need to install door closers on the door leaf, which increases the cost of door and window installation accessories and brings cumbersome installation problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an automatic door closing and positioning hinge.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An automatic door closing and positioning hinge includes a hinge shaft, a door leaf plate, and a door frame plate. An upper bushing is provided on one side of the door leaf plate, and a lower bushing is provided on one side of the door frame plate. The door leaf plate and the door frame plate are rotatably mounted on the hinge shaft via the upper and lower bushings, respectively. A positioning assembly is provided at the upper end of the hinge shaft. The positioning assembly includes a butterfly spring and a positioning element sleeved from top to bottom at the upper end of the hinge shaft. The positioning element is axially movable along the hinge shaft. The upper end of the positioning element abuts against the butterfly spring, and its lower end is provided with four positioning protrusions spaced apart.

[0007] The upper end face of the upper bushing is provided with four positioning grooves corresponding to the four positioning protrusions, and the front and rear side walls of the positioning grooves are respectively provided with a first inclined surface and a second inclined surface.

[0008] When the door leaf is rotated in the closing direction, the positioning protrusion enters the first inclined surface. Under the action of the butterfly spring, the positioning protrusion presses down on the first inclined surface. The door leaf will automatically continue to rotate, so that the positioning protrusion enters the bottom of the positioning groove and locks the door leaf in the closed position.

[0009] When the door leaf is rotated in the opening direction, the positioning protrusion enters the second inclined surface. Under the action of the butterfly spring, the positioning protrusion presses down on the second inclined surface. The door leaf will automatically continue to rotate, so that the positioning protrusion enters the bottom of the positioning groove and locks the door leaf in the open position.

[0010] The present invention further includes an adjusting component, the upper end of which is threadedly connected to the hinge shaft, and the lower end of which abuts against the upper end of the disc spring.

[0011] The present invention is further provided with: a mating part is provided at the upper end of the upper bushing, and the positioning groove is provided on the upper end of the mating part;

[0012] The lower end of the mating component is provided with several slots spaced apart circumferentially, and the upper end of the upper bushing is provided with several blocks circumferentially, wherein several blocks mate with several slots one by one.

[0013] The present invention further includes a bearing provided between the upper bushing and the lower bushing.

[0014] The present invention further includes a decorative cover sleeved on the upper end of the hinge shaft, wherein the adjustment component is built into the decorative cover.

[0015] The beneficial effects of this utility model are as follows: When closing the door, after the door leaf rotates forward by a certain angle, the positioning protrusion on the positioning component enters the first inclined surface from the opening of the positioning groove. Under the action of the butterfly spring, the positioning component moves downward, causing the positioning protrusion to press down on the first inclined surface. The door leaf automatically continues to rotate, causing the positioning protrusion to enter the bottom of the positioning groove and locking the door leaf in the closed position, so that the door leaf is stably in the closed state, which plays a role in preventing wind. During the closing process, after the door leaf is closed to a certain angle, the positioning protrusion cooperates with the first inclined surface to realize the automatic closing of the door leaf, which plays the role of a door closer.

[0016] When the door is opened, the door leaf rotates in the opposite direction by a certain angle. The positioning protrusion on the positioning component then enters the second inclined surface through the opening of the positioning groove. Under the force of the butterfly spring, the positioning component moves downwards, causing the positioning protrusion to press down on the second inclined surface. The door leaf automatically continues to rotate, allowing the positioning protrusion to enter the bottom of the positioning groove and locking the door leaf in the open position. This ensures the door is stably positioned in the open state, providing wind protection. During the opening process, after the door leaf opens to a certain angle, the positioning protrusion, in conjunction with the second inclined surface, allows the door leaf to automatically continue opening, making the opening operation easier. This hinge product offers richer functionality, eliminating the need for additional door catches and door closers, effectively reducing the cost of door and window installation accessories, simplifying the installation process, and saving installation time. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment 1 of the automatic door closing and positioning hinge of this utility model. Figure One ;

[0018] Figure 2This is a schematic diagram of the structure of an embodiment 1 of the automatic door closing and positioning hinge of this utility model. Figure Two ;

[0019] Figure 3 This is a schematic diagram of the structure of an embodiment 2 of the automatic door closing and positioning hinge of this utility model. Figure One ;

[0020] Figure 4 This is a structural schematic diagram of Embodiment 2 of the automatic door closing and positioning hinge of this utility model. Figure Two ;

[0021] Figure 5 This is a schematic diagram of the positioning component of an automatic door closing positioning hinge according to the present invention;

[0022] Figure 6 This is a schematic diagram of the positioning component of an automatic door closing positioning hinge according to the present invention;

[0023] Figure 7 This is a diagram showing the fit between the fitting component and the door leaf plate in Embodiment 2 of the automatic door closing and positioning hinge of this utility model.

[0024] Figure 8 This is a schematic diagram of the door leaf plate of an embodiment 1 of the present invention, which is an automatic door closing and positioning hinge.

[0025] Figure 9 This is a schematic diagram of the door frame panel of an automatic door closing and positioning hinge according to the present invention.

[0026] Figure 10 This is a schematic diagram of the hinge shaft of an automatic door closing and positioning hinge according to the present invention.

[0027] Explanation of reference numerals in the attached drawings: 1. Hinge shaft; 2. Door leaf panel; 21. Upper bushing; 211. Locking block; 3. Door frame panel; 31. Lower bushing; 4. Positioning assembly; 41. Butterfly spring; 42. Positioning component; 421. Positioning protrusion; 43. Adjusting component; 5. Mating component; 51. Positioning groove; 511. First inclined surface; 512. Second inclined surface; 52. Locking groove; 6. Bearing; 7. Decorative cover. Detailed Implementation

[0028] See attached document Figures 1 to 10 This invention provides a more detailed description of an automatic door closing and positioning hinge.

[0029] Example 1: An automatic door closing and positioning hinge includes a hinge shaft 1, a door leaf plate 2, and a door frame plate 3. An upper bushing 21 is provided on one side of the door leaf plate 2, and a lower bushing 31 is provided on one side of the door frame plate 3. The door leaf plate 2 and the door frame plate 3 are rotatably mounted on the hinge shaft 1 via the upper bushing 21 and the lower bushing 31, respectively. The door leaf plate 2 is mounted on the door leaf, and the door frame plate 3 is mounted on the door frame. A positioning component 4 is provided at the upper end of the hinge shaft 1. The positioning component 4 includes a butterfly spring 41 and a positioning element 42 sleeved from top to bottom at the upper end of the hinge shaft 1. The positioning element 42 can move axially along the hinge shaft 1. The upper end of the positioning element 42 abuts against the butterfly spring 41, and its lower end is provided with four positioning protrusions 421 spaced apart.

[0030] The upper end face of the upper bushing 21 is provided with four positioning grooves 51 corresponding to the four positioning protrusions 421. The front and rear side walls of the positioning grooves 51 are respectively provided with a first inclined surface 511 and a second inclined surface 512.

[0031] When the door is closed, after the door leaf rotates forward by a certain angle, the positioning protrusion 421 on the positioning member 42 enters the first inclined surface 511 from the opening of the positioning groove 51. Under the elastic force of the butterfly spring 41, the positioning member 42 moves downward, causing the positioning protrusion 421 to press down on the first inclined surface 511. The door leaf 2 will automatically continue to rotate (generally, when the door is closed to 8 degrees, the positioning protrusion 421 enters the first inclined surface 511, causing the door to automatically continue to close). The positioning protrusion 421 enters the bottom of the positioning groove 51 and locks the door leaf 2 in the closed position, keeping the door stable in the closed state and playing a role in preventing wind. During the closing process, after the door is closed to a certain angle, the positioning protrusion 421 cooperates with the first inclined surface 511 to realize the automatic closing of the door, which acts as a door closer.

[0032] When the door is opened, the door leaf rotates in the opposite direction by a certain angle. The positioning protrusion 421 on the positioning member 42 then enters the second inclined surface 512 from the opening of the positioning groove 51. Under the elastic force of the butterfly spring 41, the positioning member 42 moves downwards, causing the positioning protrusion 421 to press downwards against the second inclined surface 512. The door leaf 2 will automatically continue to rotate (generally, when the door is closed to 85 degrees, the positioning protrusion 421 enters the second inclined surface 512, causing the door to automatically continue opening to 93 degrees). The positioning protrusion 421 enters the bottom of the positioning groove 51 and locks the door leaf 2 in the open position, so that the door leaf is stably in the open state and plays a role in wind prevention. During the opening process, after the door leaf is opened to a certain angle, the positioning protrusion 421 cooperates with the second inclined surface 512 to realize the door leaf automatically continues to open, making the opening operation more convenient. This hinge product has richer functions, and there is no need to install door catches and door closers separately, which effectively reduces the cost of door and window installation accessories, simplifies the door and window installation process, and saves installation time.

[0033] The positioning component 4 further includes an adjusting member 43, the upper end of which is threaded to the hinge shaft 1, and the lower end of which abuts against the upper end of the butterfly spring 41. Tightening the adjusting member 43 downwards causes the lower end of the adjusting member 43 to press the butterfly spring 41 downwards, increasing the elastic force of the butterfly spring 41 and making the positioning member 42 fit more tightly with the positioning groove 51. Loosening the adjusting member 43 upwards causes the adjusting member 43 to move upwards, causing the butterfly spring 41 to open upwards, reducing the elastic force of the butterfly spring 41 and reducing the positioning force of the positioning member 42 on the door leaf 2. This achieves the adjustment of the locking force of the positioning member 42 on the door leaf 2.

[0034] The upper end of the upper bushing 21 is provided with a mating part 5, and the positioning groove 51 is provided on the upper end of the mating part 5; the lower end of the mating part 5 is provided with a plurality of slots 52 spaced apart in the circumferential direction, and the upper end of the upper bushing 21 is provided with a plurality of locking blocks 211 in the circumferential direction, wherein the plurality of locking blocks 211 and the plurality of slots 52 cooperate one by one to fix the mating part 5 on the door leaf plate 2.

[0035] The upper bushing 21 and the lower bushing 31 are provided with a bearing 6, which makes the door opening and closing operation smoother; it also includes a decorative cover 7 sleeved on the upper end of the hinge shaft 1, in which the adjustment component is built into the decorative cover 7; making the hinge product more concise and elegant in appearance.

[0036] Example 2: An automatic door closing and positioning hinge includes a hinge shaft 1, a door leaf plate 2, and a door frame plate 3. An upper bushing 21 is provided on one side of the door leaf plate 2, and a lower bushing 31 is provided on one side of the door frame plate 3. The door leaf plate 2 and the door frame plate 3 are rotatably mounted on the hinge shaft 1 via the upper bushing 21 and the lower bushing 31, respectively. The door leaf plate 2 is mounted on the door leaf, and the door frame plate 3 is mounted on the door frame. A positioning component 4 is provided at the upper end of the hinge shaft 1. The positioning component 4 includes a butterfly spring 41 and a positioning element 42 sleeved from top to bottom at the upper end of the hinge shaft 1. The positioning element 42 can move axially along the hinge shaft 1. The upper end of the positioning element 42 abuts against the butterfly spring 41, and its lower end is provided with four positioning protrusions 421 spaced apart.

[0037] The upper end face of the upper bushing 21 is provided with a mating part 5 that cooperates with the positioning part 42. The upper end face of the mating part is provided with four positioning grooves 51 corresponding to the four positioning protrusions 421. The lower end of the mating part 5 is provided with a number of slots 52 spaced apart in the circumferential direction. The upper end of the upper bushing 21 is provided with a number of locking blocks 211 in the circumferential direction. The locking blocks 211 cooperate with the slots 52 one by one, so that the mating part 5 and the door leaf panel 2 are set separately, which facilitates the processing and manufacturing of hinges made of materials with high hardness.

[0038] The fitting 5 is fixed to the door leaf plate 2; the front and rear side walls of the positioning groove 51 are respectively provided with a first inclined surface 511 and a second inclined surface 512;

[0039] When the door is closed, after the door leaf rotates forward by a certain angle, the positioning protrusion 421 on the positioning member 42 enters the first inclined surface 511 from the opening of the positioning groove 51. Under the elastic force of the butterfly spring 41, the positioning member 42 moves downward, causing the positioning protrusion 421 to press down on the first inclined surface 511. The door leaf 2 will automatically continue to rotate (generally, when the door is closed to 8 degrees, the positioning protrusion 421 enters the first inclined surface 511, causing the door to automatically continue to close). The positioning protrusion 421 enters the bottom of the positioning groove 51 and locks the door leaf 2 in the closed position, keeping the door stable in the closed state and playing a role in preventing wind. During the closing process, after the door is closed to a certain angle, the positioning protrusion 421 cooperates with the first inclined surface 511 to realize the automatic closing of the door, which acts as a door closer.

[0040] When the door is opened, the door leaf rotates in the opposite direction by a certain angle. The positioning protrusion 421 on the positioning member 42 then enters the second inclined surface 512 from the opening of the positioning groove 51. Under the elastic force of the butterfly spring 41, the positioning member 42 moves downwards, causing the positioning protrusion 421 to press downwards against the second inclined surface 512. The door leaf 2 will automatically continue to rotate (generally, when the door is closed to 85 degrees, the positioning protrusion 421 enters the second inclined surface 512, causing the door to automatically continue opening to 93 degrees). The positioning protrusion 421 enters the bottom of the positioning groove 51 and locks the door leaf 2 in the open position, so that the door leaf is stably in the open state and plays a role in wind prevention. During the opening process, after the door leaf is opened to a certain angle, the positioning protrusion 421 cooperates with the second inclined surface 512 to realize the door leaf automatically continues to open, making the opening operation more convenient. This hinge product has richer functions, and there is no need to install door catches and door closers separately, which effectively reduces the cost of door and window installation accessories, simplifies the door and window installation process, and saves installation time.

[0041] The positioning component 4 further includes an adjusting member 43, the upper end of which is threaded to the hinge shaft 1, and the lower end of which abuts against the upper end of the butterfly spring 41. Tightening the adjusting member 43 downwards causes the lower end of the adjusting member 43 to press the butterfly spring 41 downwards, increasing the elastic force of the butterfly spring 41 and making the positioning member 42 fit more tightly with the positioning groove 51. Loosening the adjusting member 43 upwards causes the adjusting member 43 to move upwards, causing the butterfly spring 41 to open upwards, reducing the elastic force of the butterfly spring 41 and reducing the positioning force of the positioning member 42 on the door leaf 2. This achieves the adjustment of the locking force of the positioning member 42 on the door leaf 2.

[0042] A bearing 6 is provided between the upper bushing 21 and the lower bushing 31, making the door opening and closing operation smoother. It also includes a decorative cover 7 sleeved on the upper end of the hinge shaft 1, with the adjustment component built into the decorative cover 7, making the hinge product more concise and elegant in appearance. The above description is only a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions within the scope of this utility model's concept are within the protection scope of this utility model. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An automatic door closing and positioning hinge, comprising a hinge shaft, a door leaf plate, and a door frame plate, wherein an upper bushing is provided on one side of the door leaf plate, and a lower bushing is provided on one side of the door frame plate, wherein the door leaf plate and the door frame plate are rotatably mounted on the hinge shaft via the upper bushing and the lower bushing, respectively; characterized in that: The upper end of the hinge shaft is provided with a positioning component, which includes a butterfly spring and a positioning member sleeved from top to bottom on the upper end of the hinge shaft. The positioning member can move axially along the hinge shaft. The upper end of the positioning member abuts against the butterfly spring, and its lower end is provided with four positioning protrusions at intervals. The upper end face of the upper bushing is provided with four positioning grooves corresponding to the four positioning protrusions, and the front and rear side walls of the positioning grooves are respectively provided with a first inclined surface and a second inclined surface. When the door leaf is rotated in the closing direction, the positioning protrusion enters the first inclined surface. Under the action of the butterfly spring, the positioning protrusion presses down on the first inclined surface. The door leaf will automatically continue to rotate, so that the positioning protrusion enters the bottom of the positioning groove and locks the door leaf in the closed position. When the door leaf is rotated in the opening direction, the positioning protrusion enters the second inclined surface. Under the action of the butterfly spring, the positioning protrusion presses down on the second inclined surface. The door leaf will automatically continue to rotate, so that the positioning protrusion enters the bottom of the positioning groove and locks the door leaf in the open position.

2. The automatic door closing and positioning hinge according to claim 1, characterized in that: The positioning assembly also includes an adjusting member, the upper end of which is threadedly connected to the hinge shaft, and the lower end of which abuts against the upper end of the disc spring.

3. An automatic door closing and positioning hinge according to claim 1 or 2, characterized in that: The upper end of the upper bushing is provided with a mating part, and the positioning groove is provided on the upper end of the mating part; The lower end of the mating component is provided with several slots spaced apart circumferentially, and the upper end of the upper bushing is provided with several blocks circumferentially, wherein several blocks mate with several slots one by one.

4. An automatic door closing and positioning hinge according to claim 1 or 2, characterized in that: A bearing is provided between the upper and lower bushings.

5. An automatic door closing and positioning hinge according to claim 1 or 2, characterized in that: It also includes a decorative cover fitted onto the upper end of the hinge shaft, with the adjustment assembly built into the decorative cover.

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