Door hinge and protective door thereof

Abstract

The utility model discloses a door hinge and a protective door thereof, and relates to the technical field of door hinges, the door hinge comprises a protective door body and a door frame, one side of the protective door body is provided with two first mounting grooves, and the two first mounting grooves are symmetrically distributed on one side of the protective door body; first limiting clamping grooves extending into the protective door body are formed in the top end and the bottom end of the interior of the first mounting groove correspondingly, and two second mounting grooves are formed in one side of the interior of the door frame and symmetrically distributed and located in one side of the interior of the door frame. And second limiting clamping grooves extending into the door frame are formed in the top end and the bottom end of the interior of the second mounting groove correspondingly. The hinge mechanism can effectively solve the problems that in the prior art, when a hinge mechanism is connected and fixed with a protective door and a door frame, time and labor are wasted during installation operation, and time and labor are wasted during follow-up disassembly, so that the installation and disassembly efficiency of a hinge and the protective door is low, and the labor intensity of workers is high.

Description

Technical Field

[0001] This utility model relates to the technical field of door hinges, specifically a door hinge and its protective door. Background Technology

[0002] A hinge, also known as a hinge, is a mechanical device used to connect two solid objects and allow relative rotation between them. Hinges can be made of movable components or foldable materials. Hinges are mainly installed on doors and windows, as shown below.

[0003] A search revealed a patent document with authorization announcement number CN217080061U, which discloses a protective door hinge, including a connecting plate one and a connecting plate two. A base plate is fixedly installed at the lower end of the connecting plate, and a reinforcing rod is fixedly installed on the lower side wall of the base plate. A reinforcing plate is fixedly installed on one side wall of the connecting plate. Both the reinforcing plate and the connecting plate have three sets of mounting holes evenly distributed on one side wall of the reinforcing plate and the connecting plate. A second mounting hole is located on the side wall of the base plate, next to the reinforcing rod. A shaft component is located on one side of the base plate, and an adjustment component is located on one side of the connecting plate two. An ear block is fixedly installed on the left side wall of the connecting plate two, and a limiting component is located on one side of the ear block. The adjustment component includes a mounting groove, allowing the hinge to be quickly installed on the protective door and door frame.

[0004] However, the aforementioned patents still have the following areas for improvement:

[0005] The existing hinge mechanism requires multiple bolts to fix the hinge to the security door and the door frame when connecting and fixing it. This method of using multiple bolts to connect and fix the hinge to the security door and the door frame is not only time-consuming and labor-intensive to install, but also difficult and labor-intensive to disassemble. As a result, the installation and disassembly efficiency of the hinge and the security door is low, and the labor intensity of the workers is high. The structure needs to be improved and the practicality needs to be enhanced. Utility Model Content

[0006] Technical problems to be solved

[0007] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a door hinge and its protective door.

[0008] Technical solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a door hinge, comprising a protective door body and a door frame, wherein two first mounting slots are provided on one side of the protective door body, and the two first mounting slots are symmetrically distributed on one side of the protective door body; the top and bottom ends of the first mounting slots are provided with first limiting slots extending into the interior of the protective door body; two second mounting slots are provided on one side of the interior of the door frame, and the two second mounting slots are symmetrically distributed on one side of the interior of the door frame; the top and bottom ends of the second mounting slots are provided with second limiting slots extending into the interior of the door frame; a hinge mechanism is fixedly mounted in the first mounting slot, and the hinge mechanism is fixedly mounted and connected to the second mounting slot.

[0010] Furthermore, the hinge mechanism includes a first hinge block, a second hinge block, a hinge shaft, a first locking mechanism, and a second locking mechanism. Both the first and second hinge blocks have through slots. A first hinge sleeve is fixedly connected to the middle of one side of the first hinge block. Two second hinge sleeves are fixedly connected to one side of the second hinge block. The hinge shaft movably passes through the two second hinge sleeves and the first hinge sleeve. The first hinge sleeve is located between the two second hinge sleeves. Limiting blocks are fixedly connected to the top and bottom of the hinge shaft. The first locking mechanism is fixedly installed in the through slot inside the first hinge block, and the second locking mechanism is fixedly installed in the through slot inside the second hinge block. The first hinge block matches the size of the first mounting slot and movably engages with the first mounting slot. The second hinge block matches the size of the second mounting slot and movably engages with the second mounting slot.

[0011] Furthermore, the first clamping mechanism includes a first fixed plate, a first movable plate, a first pull rod, and a first spring. The first clamping mechanism has two sets. The first pull rod is L-shaped, and one end of the first pull rod movably passes through the first fixed plate. One side of the first movable plate is fixedly connected to the first pull rod, and the other side of the first movable plate is fixedly connected to a first limiting rod. The first spring is movably fitted outside the first pull rod, and both ends of the first spring are fixedly connected to the first fixed plate and the first movable plate, respectively.

[0012] Furthermore, the first fixing plate is fixedly installed in the through groove inside the first hinge block, the L-shaped turning ends of the two first pull rods are close to each other, and the first limiting rod moves through the first hinge block and engages with the first limiting slot.

[0013] Furthermore, the second clamping mechanism includes a second fixed plate, a second movable plate, a second pull rod, and a second spring. The second clamping mechanism has two sets. The second pull rod is L-shaped, with one end of the second pull rod movably passing through the second fixed plate. One side of the second movable plate is fixedly connected to the second pull rod, and the other side of the second movable plate is fixedly connected to a second limiting rod. The second spring is movably fitted onto the outside of the second pull rod, and both ends of the second spring are fixedly connected to the second fixed plate and the second movable plate, respectively.

[0014] Furthermore, the second fixing plate is fixedly installed in the through groove inside the second hinge block, the L-shaped turning ends of the two second pull rods are close to each other, and the second limiting rod moves through the second hinge block and engages with the second limiting slot.

[0015] Another objective of this utility model is to provide a protective door, including the aforementioned door hinge.

[0016] Beneficial effects:

[0017] The technical solution provided by this utility model has the following beneficial effects compared with the prior art:

[0018] This utility model, by incorporating a hinge mechanism, eliminates the need for multiple bolts when connecting and fixing the door hinge to the security door body and frame. To connect the hinge to the frame, simply pull the two second pull rods, causing the two second limit rods to move closer together. Then, the second hinge block engages with the second mounting groove. Releasing the two second pull rods, combined with the return of the second spring, resets the two second limit rods until they engage with the two second limit slots, quickly completing the connection between the hinge and the frame. Similarly, when connecting the hinge to the security door body, only... Pulling the two first pull rods brings the two first limit rods closer together, then engages the first hinge block with the first mounting slot. Releasing the two first pull rods, combined with the rebound of the first spring, resets the two first limit rods until they engage with the two first limit slots, quickly completing the connection between the hinge and the protective door body. Subsequent disassembly follows the same principle, simply repeating the above operations in reverse. The overall operation is simple, time-saving, and labor-saving, greatly improving the efficiency of workers in connecting, fixing, and disassembling the hinge with the protective door body and door frame, and significantly reducing the labor intensity of workers, making it highly practical.

[0019] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the installation structure of the protective door body of this utility model;

[0022] Figure 3 This is a schematic diagram of the hinge mechanism installation structure of this utility model;

[0023] Figure 4 This is an exploded view of the hinge mechanism of this utility model.

[0024] In the diagram: 1. Protective door body; 2. Door frame; 3. First mounting groove; 4. First limiting slot; 5. Second mounting groove; 6. Second limiting slot; 7. Hinge mechanism; 701. First hinge block; 702. Second hinge block; 703. Hinge pivot; 704. First clamping mechanism; 7041. First fixed plate; 7042. First movable plate; 7043. First pull rod; 7044. First spring; 7045. First limiting rod; 705. Second clamping mechanism; 7051. Second fixed plate; 7052. Second movable plate; 7053. Second pull rod; 7054. Second spring; 7055. Second limiting rod; 706. Through groove; 707. First hinge sleeve; 708. Second hinge sleeve; 709. Limiting block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1-4 As shown, this utility model provides a technical solution: a door hinge, including a protective door body 1 and a door frame 2. Two first mounting grooves 3 are opened on one side of the protective door body 1, and the two first mounting grooves 3 are symmetrically distributed on one side of the protective door body 1. The top and bottom of the interior of the first mounting grooves 3 are provided with first limiting grooves 4 extending into the interior of the protective door body 1. Two second mounting grooves 5 are opened on one side of the interior of the door frame 2, and the two second mounting grooves 5 are symmetrically distributed on one side of the interior of the door frame 2. The top and bottom of the interior of the second mounting grooves 5 are provided with second limiting grooves 6 extending into the interior of the door frame 2. A hinge mechanism 7 is fixedly installed in the first mounting groove 3, and the hinge mechanism 7 is fixedly connected to the second mounting groove 5.

[0027] The hinge mechanism 7 includes a first hinge block 701, a second hinge block 702, a hinge shaft 703, a first locking mechanism 704, and a second locking mechanism 705. Both the first hinge block 701 and the second hinge block 702 have through slots 706. A first hinge sleeve 707 is fixedly connected to the middle of one side of the first hinge block 701. Two second hinge sleeves 708 are fixedly connected to one side of the second hinge block 702. The hinge shaft 703 movably passes through the two second hinge sleeves 708 and the first hinge sleeve 707, with the first hinge sleeve 707 located between the two second hinge sleeves 708. Limit blocks 709 are fixedly connected to both the top and bottom ends of the hinge shaft 703. The first locking mechanism 704 is fixedly installed in the through slot 706 inside the first hinge block 701. The second locking mechanism 705… The first hinge block 701 is fixedly installed in the through groove 706 inside the second hinge block 702. The size of the first hinge block 701 matches the first mounting groove 3 and is movably engaged with the first mounting groove 3. The size of the second hinge block 702 matches the second mounting groove 5 and is movably engaged with the second mounting groove 5. This allows the hinge to be quickly and easily connected to the protective door body 1 when it is being connected and fixed to the door frame 2. The first hinge block 701 can be engaged and connected with the first mounting groove 3, and then engaged and connected with the first limiting groove 4 through the first locking mechanism 704. When the hinge is being connected and fixed to the door frame 2, the second hinge block 702 can be engaged and connected with the second mounting groove 5, and then engaged and connected with the second limiting groove 6 through the second locking mechanism 705.

[0028] The first mounting mechanism 704 includes a first fixed plate 7041, a first movable plate 7042, a first pull rod 7043, and a first spring 7044. The first mounting mechanism 704 has two sets. The first pull rod 7043 is L-shaped, with one end movably passing through the first fixed plate 7041. One side of the first movable plate 7042 is fixedly connected to the first pull rod 7043, and the other side of the first movable plate 7042 is fixedly connected to a first limiting rod 7045. The first spring 7044 is movably fitted onto the outside of the first pull rod 7043, and both ends of the first spring 7044 are fixedly connected to the first fixed plate 7041 and the first movable plate 7042, respectively. This allows the hinge to be connected and fixed to the protective door body 1 by first pulling the two first pull rods 7043, which in turn moves the two first movable plates 7042 closer together, thereby moving the two first limit rods 7045 closer together and compressing the two first springs 7044. Then, the first hinge block 701 engages with the first mounting groove 3. At this time, the two first pull rods 7043 are released, and the two first springs 7044 will rebound due to elastic force, which will then move the two first limit rods 7045 back to their original position until the two first limit rods 7045 engage with the two first limit slots 4, thus quickly completing the connection and fixation between the hinge and the protective door body 1.

[0029] The first fixing plate 7041 is fixedly installed in the through groove 706 inside the first hinge block 701. The L-shaped turning ends of the two first pull rods 7043 are close to each other. The first limiting rod 7045 moves through the first hinge block 701 and engages with the first limiting slot 4. The L-shaped turning ends of the two first pull rods 7043 are close to each other, which makes it convenient for the staff to pull the two first pull rods 7043 at the same time.

[0030] The second clamping mechanism 705 includes a second fixed plate 7051, a second movable plate 7052, a second pull rod 7053, and a second spring 7054. Two sets of the second clamping mechanism 705 are provided. The second pull rod 7053 is L-shaped, with one end movably passing through the second fixed plate 7051. One side of the second movable plate 7052 is fixedly connected to the second pull rod 7053, and the other side of the second movable plate 7052 is fixedly connected to a second limiting rod 7055. The second spring 7054 is movably fitted onto the outside of the second pull rod 7053, and both ends of the second spring 7054 are respectively connected to the second fixed plate 7051 and the second movable plate 7052. The fixed connection allows the hinge to be connected and fixed to the door frame 2 by first pulling the two second pull rods 7053, which in turn moves the two second movable plates 7052 closer together, thereby moving the two second limit rods 7055 closer together and compressing the two second springs 7054. Then, the second hinge block 702 engages with the second mounting groove 5. At this point, the two second pull rods 7053 are released, and the two second springs 7054 will rebound due to elastic force, which will then move the two second limit rods 7055 back to their original position until the two second limit rods 7055 engage with the two second limit slots 6, thus quickly completing the connection and fixation between the hinge and the door frame 2.

[0031] The second fixing plate 7051 is fixedly installed in the through groove 706 inside the second hinge block 702. The L-shaped turning ends of the two second pull rods 7053 are close to each other. The second limiting rod 7055 moves through the second hinge block 702 and engages with the second limiting slot 6. The L-shaped turning ends of the two second pull rods 7053 are close to each other, which makes it convenient for the staff to pull the two second pull rods 7053 at the same time.

[0032] Another objective of this utility model is to provide a protective door, including the aforementioned door hinge.

[0033] Working principle: When installing the hinge and the protective door body 1, first connect and fix the hinge to the door frame 2. While connecting and fixing the hinge to the door frame 2, pull the two second pull rods 7053 to bring the two second movable plates 7052 closer together, thereby bringing the two second limit rods 7055 closer together and compressing the two second springs 7054. Then, engage the second hinge block 702 with the second mounting groove 5. At this point, release the two second pull rods 7053. The two second springs 7054 will rebound due to elastic force, thereby resetting the two second limit rods 7055 until they engage with the two second limit slots 6, thus quickly completing the installation. The connection between the hinge and the door frame 2 is fixed. Then, when connecting and fixing the hinge to the protective door body 1, the two first pull rods 7043 can be pulled first, causing the two first movable plates 7042 to move closer to each other, thereby causing the two first limit rods 7045 to move closer to each other and the two first springs 7044 to be compressed. Then, the first hinge block 701 is engaged with the first mounting groove 3. At this time, the two first pull rods 7043 are released, and the two first springs 7044 will rebound due to the elastic force, thereby causing the two first limit rods 7045 to reset until the two first limit rods 7045 are engaged with the two first limit slots 4, thus quickly completing the connection and fixing between the hinge and the protective door body 1.

[0034] It should be noted that in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "fixed," "installed," "connected," and "linked" should be interpreted broadly. For example, "installed" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "linked" can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A door hinge, comprising a protective door body (1) and a door frame (2), characterized in that: Two first mounting slots (3) are provided on one side of the protective door body (1), and the two first mounting slots (3) are symmetrically distributed on one side of the protective door body (1). The top and bottom of the first mounting slots (3) are provided with first limiting slots (4) extending into the interior of the protective door body (1). Two second mounting slots (5) are provided on one side of the interior of the door frame (2), and the two second mounting slots (5) are symmetrically distributed on one side of the interior of the door frame (2). The top and bottom of the second mounting slots (5) are provided with second limiting slots (6) extending into the interior of the door frame (2). A hinge mechanism (7) is fixedly installed in the first mounting slot (3), and the hinge mechanism (7) is fixedly connected to the second mounting slot (5).

2. A door hinge according to claim 1, characterized in that: The hinge mechanism (7) includes a first hinge block (701), a second hinge block (702), a hinge shaft (703), a first locking mechanism (704), and a second locking mechanism (705). Both the first hinge block (701) and the second hinge block (702) have through slots (706) inside. A first hinge sleeve (707) is fixedly connected to the middle of one side of the first hinge block (701). Two second hinge sleeves (708) are fixedly connected to one side of the second hinge block (702). The hinge shaft (703) movably passes through the two second hinge sleeves (708) and the first hinge sleeve (707). A hinge sleeve (707) is located between two second hinge sleeves (708). The top and bottom ends of the hinge shaft (703) are fixedly connected to limit blocks (709). The first clamping mechanism (704) is fixedly installed in the through groove (706) inside the first hinge block (701). The second clamping mechanism (705) is fixedly installed in the through groove (706) inside the second hinge block (702). The first hinge block (701) matches the size of the first mounting groove (3) and is movably engaged with the first mounting groove (3). The second hinge block (702) matches the size of the second mounting groove (5) and is movably engaged with the second mounting groove (5).

3. A door hinge according to claim 2, characterized in that: The first clamping mechanism (704) includes a first fixed plate (7041), a first movable plate (7042), a first pull rod (7043), and a first spring (7044). The first clamping mechanism (704) has two sets. The first pull rod (7043) is L-shaped. One end of the first pull rod (7043) movably passes through the first fixed plate (7041). One side of the first movable plate (7042) is fixedly connected to the first pull rod (7043). The other side of the first movable plate (7042) is fixedly connected to a first limiting rod (7045). The first spring (7044) is movably fitted outside the first pull rod (7043), and both ends of the first spring (7044) are fixedly connected to the first fixed plate (7041) and the first movable plate (7042) respectively.

4. A door hinge according to claim 3, characterized in that: The first fixing plate (7041) is fixedly installed in the through groove (706) inside the first hinge block (701). The L-shaped turning ends of the two first pull rods (7043) are close to each other. The first limiting rod (7045) moves through the first hinge block (701) and engages with the first limiting slot (4).

5. A door hinge according to claim 2, characterized in that: The second clamping mechanism (705) includes a second fixed plate (7051), a second movable plate (7052), a second pull rod (7053), and a second spring (7054). The second clamping mechanism (705) has two sets. The second pull rod (7053) is L-shaped. One end of the second pull rod (7053) movably passes through the second fixed plate (7051). One side of the second movable plate (7052) is fixedly connected to the second pull rod (7053). The other side of the second movable plate (7052) is fixedly connected to a second limiting rod (7055). The second spring (7054) is movably fitted outside the second pull rod (7053), and both ends of the second spring (7054) are fixedly connected to the second fixed plate (7051) and the second movable plate (7052), respectively.

6. A door hinge according to claim 5, characterized in that: The second fixing plate (7051) is fixedly installed in the through groove (706) inside the second hinge block (702). The L-shaped turning ends of the two second pull rods (7053) are close to each other. The second limiting rod (7055) moves through the second hinge block (702) and engages with the second limiting slot (6).

7. A protective door, characterized in that: Includes a door hinge as described in any one of claims 1-6.

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