Cabinet door hinge protection device and communication cabinet

Abstract

According to the cabinet door hinge protection device and the communication cabinet, the hinge protection cover is arranged between the cabinet body and the door body, and the hinge protection cover is located on the outer side of the hinge assembly in the transverse direction so as to protect the hinge assembly; the door body limiting part is located on the hinge protection cover, and when the door body rotates around the hinge assembly by a preset angle, the door body limiting part makes contact with the door side wall to limit rotation of the door body; meanwhile, the cabinet body side limiting part is arranged on the cabinet body, the cabinet body side limiting part is located on the inner side of the hinge assembly in the transverse direction, the hinge protection cover is limited to rotate inwards in the transverse direction, the situation that the hinge is collided due to the fact that the rotating angle of the door body is too large is prevented, meanwhile, collision interference between the door and the cabinet body or other equipment is reduced, and the service life of the door assembly is prolonged; secondly, the hinges and the hinge protection assembly are directly arranged on the door body, the external space of the door is not occupied, meanwhile, a door frame does not need to be arranged, and it is guaranteed that the normal use space of the cabinet body is sufficient.

Description

Technical Field

[0001] The present application relates to the technical field of hinge protection, and in particular to a cabinet door hinge protection device and a communication cabinet. Background Art

[0002] A hinge, also known as a hinge, is a mechanical device used to connect two solids and allow relative rotation between them. A hinge can be composed of movable components or foldable materials. Hinges are mainly installed on doors and windows, while hinges are more often installed on cabinets.

[0003] Door hinges are essential components for all types of doors and are key to their opening and closing functions. Currently, standard hinges simply allow the door to rotate without any anti-collision or protective features. After a certain number of openings and closings, the hinges can easily become damaged, rendering the door's opening and closing function inoperable. Summary of the Invention

[0004] In an embodiment of the present application, a cabinet door hinge protection device and a communication cabinet are provided to solve the problem that the existing hinges only have a rotation function, and after the door is opened and closed a certain number of times, the door hinges are easily damaged, thereby causing the door opening and closing function to fail.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A cabinet door hinge protection device, comprising:

[0007] A hinge assembly comprising a first hinge and a second hinge that are hinged together;

[0008] a cabinet body, to which the first hinge is fixed;

[0009] A door body, wherein a door side wall of the door body has a mounting notch, and the second hinge is longitudinally arranged in the mounting notch;

[0010] A hinge protection assembly, comprising a hinge protection cover, a door body limiting portion and a cabinet side limiting portion, wherein the hinge protection cover is located in the installation notch, and the door body can rotate relative to the hinge protection cover;

[0011] The door body limiting portion is located on the hinge protection cover, and when the door body rotates around the hinge assembly at a preset angle, the door body limiting portion contacts the door side wall to limit the rotation of the door body;

[0012] The cabinet side limiting portion is provided on the cabinet, and in the lateral direction, the hinge assembly and the cabinet side limiting portion are both located on the inner side of the hinge protection cover, and the cabinet side limiting portion is used to limit the lateral inward rotation of the hinge protection cover.

[0013] Optionally, the hinge protection assembly further includes:

[0014] A rotating shaft portion is provided on the hinge protection cover and extends in the longitudinal direction;

[0015] Two rotating shaft mounting parts are respectively arranged on the door side walls corresponding to the upper and lower ends of the mounting notch. Any of the rotating shaft mounting parts has a rotating shaft mounting hole, and the rotating shaft part is loosely matched with the rotating shaft mounting hole; the rotating shaft part is collinear with the axis of the hinge assembly.

[0016] Optionally, the hinge protection cover includes:

[0017] The protective cover body is provided with a hinge avoidance opening extending in the longitudinal direction for making way for the second hinge;

[0018] The top plate and the bottom plate are respectively located at the top and bottom ends of the protective cover body in the longitudinal direction; the two rotating shafts are respectively arranged on the top plate and the bottom plate.

[0019] Optionally, the hinge protection assembly further includes:

[0020] A torsion spring is sleeved on the rotating shaft portion, wherein a torsion pin at one end of the torsion spring is connected to the top plate or the bottom plate, and a torsion pin at the other end of the torsion spring is connected to the rotating shaft mounting portion.

[0021] Optionally, the top plate and the bottom plate are respectively provided with a first pin mounting hole, and the first pin mounting hole is arranged along the wall thickness direction; the torsion pin at one end of the torsion spring is plugged into the first pin mounting hole;

[0022] Any of the shaft mounting portions is provided with a second pin mounting hole, which is arranged along the wall thickness direction of the shaft mounting portion; the torsion pin at the other end of the torsion spring is plugged into the second pin mounting hole.

[0023] Optionally, the door body limiting portion is an L-shaped door body limiting portion.

[0024] Optionally, the preset angle is 75°-110°.

[0025] Optionally, there are two cabinet side limiting portions, which are located at the upper and lower ends of the first hinge along the longitudinal direction on the cabinet.

[0026] Optionally, the cabinet side limiting portion is a limiting column or a limiting pin.

[0027] The present application also provides a communication cabinet, comprising the cabinet door hinge protection device described in any one of the above embodiments.

[0028] A cabinet door hinge protection device provided in an embodiment of the present application includes: a hinge assembly, including a first hinge and a second hinge that are hinged; a cabinet body, to which the first hinge is fixed; a door body, wherein the door side wall of the door body has an installation notch, and the second hinge is longitudinally arranged in the installation notch; a hinge protection assembly, including a hinge protection cover, a door body limiting portion and a cabinet side limiting portion, the hinge protection cover is located in the installation notch, and the door body can rotate relative to the hinge protection cover; the door body limiting portion is located on the hinge protection cover, and when the door body rotates around the hinge assembly by a preset angle, the door body limiting portion contacts the door side wall to limit the rotation of the door body; the cabinet side limiting portion is arranged on the cabinet body, and in the lateral direction, the hinge assembly and the cabinet side limiting portion are both located on the inner side of the hinge protection cover, and the cabinet side limiting portion is used to limit the lateral inward rotation of the hinge protection cover.

[0029] Compared with the prior art, the cabinet door hinge protection device and the communication cabinet provided in the embodiments of the present application have the following technical effects:

[0030] A hinge protection cover is provided between the cabinet body and the door body, and the hinge protection cover is located on the outside of the hinge assembly in the transverse direction to protect the hinge assembly; a door body limiting portion is located on the hinge protection cover, and when the door body rotates around the hinge assembly at a preset angle, the door body limiting portion contacts the door side wall to limit the rotation of the door body; at the same time, a cabinet body side limiting portion is provided on the cabinet body, and in the transverse direction, the cabinet body side limiting portion is located on the inner side of the hinge assembly to limit the rotation of the hinge protection cover in the transverse direction, thereby preventing the door body from rotating at an excessive angle and causing collision with the hinge, while reducing the collision interference between the door and the cabinet body or other equipment, thereby improving the service life of the door assembly;

[0031] Secondly, hinges and hinge protection components are directly set on the door body, which does not occupy the external space of the door. At the same time, there is no need to set a door frame, ensuring that there is sufficient space for normal use of the cabinet.

[0032] In order to achieve the above-mentioned second purpose, the present application also provides a communication cabinet, which includes any one of the above-mentioned cabinet door hinge protection devices. Since the above-mentioned cabinet door hinge protection device has the above-mentioned technical effects, the communication cabinet having the cabinet door hinge protection device should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0034] Figure 1 A schematic diagram of the main structure of a hinge protection cover provided in an embodiment of the present application;

[0035] Figure 2 for Figure 1 Axonometric structural diagram;

[0036] Figure 3 A schematic diagram of the explosion structure of a cabinet door hinge protection device provided in an embodiment of the present application;

[0037] Figure 4 A schematic diagram of the assembly structure of a cabinet door hinge protection device provided in an embodiment of the present application;

[0038] Figure 5 A schematic diagram of the external structure of the hinge protection cover provided in an embodiment of the present application;

[0039] Figure 6 A schematic structural diagram of a door body in a closed state provided in an embodiment of the present application;

[0040] Figure 7 A schematic diagram of the structure of the door body provided in the embodiment of the present application in the process of rotation;

[0041] Figure 8 A schematic diagram of the structure of the door body provided in an embodiment of the present application when it is rotated to a preset angle;

[0042] Figure 9 This is a schematic diagram of the position structure of the hinge protection cover and the cabinet side limit part when the door is in the closed state;

[0043] Figure 10 This is a schematic diagram of the position structure of the hinge protection cover and the cabinet side limit part when the door body is in the process of rotation;

[0044] Figure 11 This is a schematic diagram of the position structure of the hinge protection cover and the cabinet side limit part when the door is opened to a preset angle;

[0045] Figure 12 This is a schematic diagram of the position structure of the hinge protection cover and the cabinet side limit part when the door is opened to a preset angle;

[0046] Figure 13 This is a schematic diagram of the position structure of the hinge protection cover and the cabinet side limit part when the door body is in the process of rotation;

[0047] Figure 14 This is a schematic diagram of the position structure of the hinge protection cover and the cabinet side limit part when the door is in the closed state.

[0048] The following are marked in the accompanying drawings:

[0049] First hinge 1, second hinge 2, cabinet body 3, door body 4;

[0050] Installation notch 41, door side wall 42;

[0051] Hinge protection cover 51, door limiter 52, cabinet side limiter 53, shaft 54, shaft mounting portion 55, torsion spring 56;

[0052] Second pin mounting hole 551;

[0053] Protective cover body 511, top plate 512, bottom plate 513, first pin mounting hole 514;

[0054] Hinge avoidance 5111. DETAILED DESCRIPTION

[0055] The embodiment of the present invention discloses a cabinet door hinge protection device and a communication cabinet to solve the problem that the existing hinge has only a rotation function and is prone to damage to the door hinge after a certain number of door openings and closings, thereby causing the door opening and closing function to fail.

[0056] In order to make the technical solutions and advantages of the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, and are not an exhaustive list of all the embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other unless they conflict.

[0057] See also Figure 1-14 , Figure 1 A schematic diagram of the main structure of a hinge protection cover provided in an embodiment of the present application; Figure 2 for Figure 1 Axonometric structural diagram; Figure 3 A schematic diagram of the explosion structure of a cabinet door hinge protection device provided in an embodiment of the present application; Figure 4 A schematic diagram of the assembly structure of a cabinet door hinge protection device provided in an embodiment of the present application; Figure 5 A schematic diagram of the external structure of the hinge protection cover provided in an embodiment of the present application;

[0058] Figure 6 A schematic diagram of the structure of the door body in a closed state provided in an embodiment of the present application; Figure 7 A schematic diagram of the structure of the door body provided in the embodiment of the present application in the process of rotation; Figure 8 A schematic diagram of the structure of the door body provided in an embodiment of the present application when it is rotated to a preset angle; Figure 9 This is a schematic diagram of the position structure of the hinge protection cover and the cabinet side limit part when the door is in the closed state; Figure 10 This is a schematic diagram of the position structure of the hinge protection cover and the cabinet side limit part when the door body is in the process of rotation; Figure 11 This is a schematic diagram of the position structure of the hinge protection cover and the cabinet side limit part when the door is opened to a preset angle; Figure 12This is a schematic diagram of the position structure of the hinge protection cover and the cabinet side limit part when the door is opened to a preset angle; Figure 13 This is a schematic diagram of the position structure of the hinge protection cover and the cabinet side limit part when the door body is in the process of rotation; Figure 14 This is a schematic diagram of the position structure of the hinge protection cover and the cabinet side limit part when the door is in the closed state.

[0059] In a specific embodiment, the cabinet door hinge protection device provided in the present application includes a cabinet body 3, a door body 4, a hinge assembly and a hinge protection assembly; wherein the cabinet body 3 can be a communication cabinet, a furniture cabinet or other cabinet body 3 with a door structure, and the use scenario and setting position of the door hinge protection device can be set as needed, which will not be repeated here; the hinge assembly includes a first hinge 1 and a second hinge 2 that are hinged to each other, the first hinge 1 is fixed on the cabinet body 3, and the second hinge 2 is fixed on the door body 4, and the specific structure of the first hinge 1 and the second hinge 2 can be set as needed.

[0060] The hinge protection assembly includes a hinge protection cover 51, a door body limiting portion 52, and a cabinet side limiting portion 53. The hinge protection cover 51 can be set as a plate structure, such as a rectangular plate. A mounting notch 41 is provided on the door side wall 42 of the door body 4. The mounting notch 41 is set along the longitudinal direction of the door body 4. The "longitudinal" mentioned here and below refers to the length direction of the door body 4, and the "transverse" refers to the width direction of the door body 4. The mounting notch 41 is preferably set as a rectangular notch to match the hinge protection cover 51. In order to protect the hinge assembly, the second hinge 2 on the door body 4 is set in the mounting notch 41, preferably in the middle of the mounting notch 41 along the longitudinal direction, which is more convenient for assembly and indirectly improves the protection of the hinge. It can be understood that the second hinge 2 is fixed to the door body 4 and rotates relative to the hinge protection cover 51 as the door body 4 rotates. In order to prevent the hinge protection cover 51 from interfering with the rotation of the second hinge 2, a hinge avoidance opening 5111 is provided on the hinge protection cover 51 to make way for the second hinge 2.

[0061] There is a rotating pair between the hinge protection cover 51 and the door body 4, that is, the two are rotationally connected, which can be achieved by setting a rotating shaft; in order to prevent the hinge protection cover 51 from rotating during the door opening and rotation process of the door body 4, a cabinet side limiter 53 is provided on the cabinet body 3, and the cabinet side limiter 53 is located laterally on the inner side of the hinge protection cover 51 to limit the inward rotation of the hinge protection cover 51 so that the hinge protection cover 51 is always located on the laterally outer side of the hinge assembly, where the inner side refers to the side close to the transverse center of the door body 4, and the outer side refers to the side away from the transverse center of the door body 4; thereby ensuring that the hinge assembly is isolated from the outside and protecting the hinge assembly; at the same time, preventing the hinge protection cover 51 from rotating inward and interfering with the hinge assembly.

[0062] The door limiter 52 is disposed on the hinge protection cover 51. When the door 4 is opened by rotating the hinge assembly to a preset angle, the door limiter 52 contacts the door sidewalls 42, which are the end walls at the lateral ends of the door 4. The door limiter 52 limits the maximum opening angle of the door sidewalls 42, preventing the hinge assembly from being struck by the door 4. It also prevents the door 4 from striking the cabinet 3, thereby reducing the service life of the cabinet 3, the door 4, and the hinge assembly. Optionally, the preset angle is generally between 75° and 110°, preferably 90°. The preset angle can be set as needed, and the structure of the door limiter 52 and its location on the hinge protection cover 51 can be adjusted accordingly.

[0063] Compared with the prior art, the cabinet door hinge protection device and the communication cabinet provided in the embodiments of the present application have the following technical effects:

[0064] A hinge protection cover 51 is provided between the cabinet body 3 and the door body 4. The hinge protection cover 51 is located on the outside of the hinge assembly in the transverse direction to protect the hinge assembly. A door body limiting portion 52 is located on the hinge protection cover 51. When the door body 4 rotates around the hinge assembly at a preset angle, the door body limiting portion 52 contacts the door side wall 42 to limit the rotation of the door body 4. At the same time, a cabinet side limiting portion 53 is provided on the cabinet body 3. In the transverse direction, the cabinet side limiting portion 53 is located on the inner side of the hinge assembly to limit the rotation of the hinge protection cover 51 in the transverse direction, thereby preventing the door body 4 from rotating too much and causing collision with the hinge. At the same time, the collision interference between the door and the cabinet body 3 or other equipment is reduced, thereby improving the service life of the door assembly.

[0065] Secondly, hinges and hinge protection components are directly arranged on the door body 4, which does not occupy the external space of the door. At the same time, there is no need to set a door frame, ensuring that the normal use space of the cabinet body 3 is sufficient.

[0066] In an optional embodiment, the hinge protection cover 51 includes a protection cover body 511, a top plate 512, and a bottom plate 513. The protection cover body 511 is provided with a hinge avoidance opening 5111 extending longitudinally for making way for the second hinge 2. The longitudinal direction is the length of the protection cover body 511, and when the protection cover body 511 is installed on the door body 4, it is the length of the door body 4. The top plate 512 and the bottom plate 513 are respectively located at the top and bottom ends of the protection cover body 511 in the longitudinal direction. The top plate 512 and the bottom plate 513 are arranged parallel to and perpendicular to the protection cover body 511. The protection cover body 511, the top plate 512, and the bottom plate 513 are preferably arranged as a single piece to facilitate production and processing and improve processing efficiency.

[0067] In order to realize the rotational connection between the hinge protection assembly and the door body 4, the hinge protection assembly also includes a shaft portion 54 and two shaft mounting portions 55. The shaft portion 54 is located on the hinge protection cover 51 and extends longitudinally. The shaft portion 54 is colinear with the axis of the hinge assembly to ensure the normal rotation of the door body 4. The two shaft mounting portions 55 are respectively arranged on the door side walls 42 corresponding to the upper and lower ends of the mounting notch 41. Any shaft mounting portion 55 has a shaft mounting hole to fit with the upper and lower ends of the shaft portion 54 and to fit with the clearance so that the shaft portion 54 and the shaft mounting portion 55 can rotate relative to each other. The shaft portion 54 can be set as a cylinder. In other embodiments, the structure of the shaft portion 54 can be set as it is, as long as the same technical effect can be achieved, which will not be repeated here. Specifically, there are preferably two shaft portions 54, one shaft mounting portion 55 is located on the top plate 512, and the other shaft portion 54 is located on the bottom plate 513, and they are respectively arranged perpendicular to the top plate 512 and the bottom plate 513.

[0068] Furthermore, the hinge protection assembly further includes a torsion spring 56, which is sleeved on the rotating shaft portion 54. One end of the torsion spring 56 has a torsion pin connected to the top plate 512 or the bottom plate 513, and the other end of the torsion spring 56 has a torsion pin connected to the rotating shaft mounting portion 55. Optionally, the torsion spring 56 is sleeved on the circumferential outer wall of the rotating shaft portion 54, with one end of the torsion spring 56 fixed to the top plate 512 and the other end of the torsion spring 56 fixed to the rotating shaft mounting portion 55. When the door body 4 is rotated to open, due to the action of the torque, the torsion spring 56 undergoes elastic deformation after the door body 4 is opened, pushing the hinge protection cover 51 to rotate inward in the lateral direction, so that the hinge protection cover 51 abuts against the cabinet side limit portion 53, and the cabinet side limit portion 53 limits the hinge protection cover 51. At the same time, the torsion spring 56 reduces the impact force when the door side wall 42 contacts the door body limit portion 52, increases the buffer between the two, and further improves the service life of the hinge assembly and the door body 4. When the door body 4 rotates and closes, due to the elastic deformation of the torsion spring 56, the torsion spring 56 continues to push the hinge protection cover 51 to resist the cabinet side limit part 53, and the hinge protection cover 51 is limited by the cabinet side limit part 53; while the door body 4 on the other side can rebound more quickly under the rebound force of the torsion spring 56 until the door body 4 is closed. At this time, the torsion spring 56 may still have a certain torque to further ensure that the hinge protection cover 51 is resisted against the cabinet side limit part 53, and the internal hinge of the hinge protection cover 51 is always isolated from the external environment, thereby further improving the protection of the hinge.

[0069] Furthermore, the top plate 512 and the bottom plate 513 are respectively provided with a first pin mounting hole 514, and the first pin mounting hole 514 is arranged along the wall thickness direction; the torsion pin at one end of the torsion spring 56 is plugged into the first pin mounting hole 514; any rotating shaft mounting portion 55 is provided with a second pin mounting hole 551, and the second pin mounting hole 551 is arranged along the wall thickness direction of the rotating shaft mounting portion 55; the torsion pin at the other end of the torsion spring 56 is plugged into the second pin mounting hole 551; this arrangement facilitates the disassembly and assembly of the torsion spring 56 and the hinge protection cover 51 and the door body 4.

[0070] In one embodiment, the door body limiting portion 52 is an L-shaped door body limiting portion 52 , and the L-shaped door body limiting portion 52 includes two plate structures arranged perpendicular to each other, so that the structure is more stable and can withstand the impact force of the door body 4 .

[0071] Optionally, there are two cabinet side limit parts 53, which are located at the upper and lower ends of the first hinge 1 along the longitudinal direction on the cabinet 3, thereby improving the limiting effect; the cabinet side limit parts 53 are limit columns or limit pins, which are welded or threadedly connected to the cabinet 3 to improve the connection strength and facilitate bearing impact loads.

[0072] In this embodiment, the specific operation process includes: putting two torsion springs 56 on the upper and lower ends of the rotating shaft portion 54, installing the rotating shaft portion 54 and the rotating shaft mounting portion 55 to form a clearance fit; and inserting one pin of the torsion spring 56 into the first pin mounting hole 514, and inserting the other pin of the torsion spring 56 into the second pin mounting hole 551; and assembling the first hinge 1 and the second hinge 2 to obtain a hinged structure; the hinge protection cover 51 is located laterally on the outside of the hinge assembly to protect the hinge assembly. When the door body 4 is opened outward along the hinge assembly, the torsion spring 56 is elastically deformed by the force. Due to the plug-in connection between the torsion spring 56 and the hinge protection cover 51, the torsion force is transmitted to the hinge protection cover 51, prompting the hinge protection cover 51 to rotate inward laterally around the rotating shaft portion 54. The cabinet side limit portion 53 limits the inward rotation of the hinge protection cover 51 to protect the hinge assembly. The hinge protection cover 51 remains stationary relative to the cabinet body 3 until the door body limit portion 52 on the hinge protection cover 51 takes effect and the door body 4 stops rotating; when the door side wall 42 of the door body 4 rotates to contact the door body limit portion 52 of the hinge protection cover 51, the door body limit portion 52 limits the rotation of the door side wall 42, so that the door body 4 is at a preset maximum opening and closing angle, generally 90°; thereby preventing the door hinge (hinge) from being hit by the door and improving the normal service life of the door hinge (hinge) and the door assembly. When the door body 4 is closed, the door body 4 rotates. Due to the action of the torsion spring 56, the hinge protection cover 51 continues to remain stationary relative to the cabinet body 3 until the door body 4 returns to its initial position and the door body 4 stops rotating. Therefore, during the opening and closing process of the door body 4, the elastic mechanism (torsion spring 56) and the limiting mechanism (cabinet side limiting portion 53) can ensure that the hinge protection cover 51 protects the door hinge (hinge) in real time during the rotation of the door body 4, and to a certain extent, ensures that the door hinge (hinge) is always isolated from the outside. At the same time, the hinge avoidance opening 5111 on the door body 4 can be kept closed in real time, thereby improving the aesthetics of the door assembly.

[0073] Based on the cabinet door hinge protection device provided in the above embodiments, the present application also provides a communication cabinet, which includes any one of the cabinet door hinge protection devices in the above embodiments. Since the communication cabinet adopts the cabinet door hinge protection device in the above embodiments, please refer to the above embodiments for the beneficial effects of the communication cabinet.

[0074] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0075] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A cabinet door hinge protection device, characterized in that: include: A hinge assembly comprising a first hinge and a second hinge that are hinged together; a cabinet body, to which the first hinge is fixed; A door body, wherein a door side wall of the door body has a mounting notch, and the second hinge is longitudinally arranged in the mounting notch; A hinge protection assembly, comprising a hinge protection cover, a door body limiting portion and a cabinet side limiting portion, wherein the hinge protection cover is located in the installation notch, and the door body can rotate relative to the hinge protection cover; The door body limiting portion is located on the hinge protection cover, and when the door body rotates around the hinge assembly at a preset angle, the door body limiting portion contacts the door side wall to limit the rotation of the door body; The cabinet side limiting portion is provided on the cabinet, and in the lateral direction, the hinge assembly and the cabinet side limiting portion are both located on the inner side of the hinge protection cover, and the cabinet side limiting portion is used to limit the lateral inward rotation of the hinge protection cover.

2. The cabinet door hinge protection device according to claim 1, characterized in that: The hinge protection assembly further includes: A rotating shaft portion is provided on the hinge protection cover and extends in the longitudinal direction; Two rotating shaft mounting parts are respectively arranged on the door side walls corresponding to the upper and lower ends of the mounting notch. Any of the rotating shaft mounting parts has a rotating shaft mounting hole, and the rotating shaft part is loosely matched with the rotating shaft mounting hole; the rotating shaft part is collinear with the axis of the hinge assembly.

3. The cabinet door hinge protection device according to claim 2, characterized in that: The hinge protection cover comprises: The protective cover body is provided with a hinge avoidance opening extending in the longitudinal direction for making way for the second hinge; The top plate and the bottom plate are respectively located at the top and bottom ends of the protective cover body in the longitudinal direction; the two rotating shafts are respectively arranged on the top plate and the bottom plate.

4. The cabinet door hinge protection device according to claim 3, characterized in that: The hinge protection assembly further includes: A torsion spring is sleeved on the rotating shaft portion, wherein a torsion pin at one end of the torsion spring is connected to the top plate or the bottom plate, and a torsion pin at the other end of the torsion spring is connected to the rotating shaft mounting portion.

5. The cabinet door hinge protection device according to claim 4, characterized in that: The top plate and the bottom plate are respectively provided with a first pin mounting hole, and the first pin mounting hole is arranged along the wall thickness direction; the torsion pin at one end of the torsion spring is plugged into the first pin mounting hole; Any of the shaft mounting portions is provided with a second pin mounting hole, which is arranged along the wall thickness direction of the shaft mounting portion; the torsion pin at the other end of the torsion spring is plugged into the second pin mounting hole.

6. The cabinet door hinge protection device according to claim 3, characterized in that: The door body limiting portion is an L-shaped door body limiting portion.

7. The cabinet door hinge protection device according to claim 1, characterized in that: The preset angle is 75°-110°.

8. The cabinet door hinge protection device according to claim 1, characterized in that: There are two cabinet side limiting portions, which are located at the upper and lower ends of the first hinge along the longitudinal direction on the cabinet.

9. The cabinet door hinge protection device according to claim 8, characterized in that: The cabinet side limiting portion is a limiting column or a limiting pin.

10. A communication cabinet, characterized in that: The cabinet door hinge protection device comprises the cabinet door hinge protection device according to any one of claims 1 to 9.

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