Hidden hinge for access door of cultural relic showcase

Abstract

The concealed hinge comprises a first fixed seat, a second fixed seat, a first movable rod and a second movable rod, wherein the first fixed seat is fixedly mounted with a door frame of the access door of the cultural relic showcase; the second fixed seat is fixedly mounted with a door plate of the access door of the cultural relic showcase; the two ends of the first movable rod are hinged to the first fixing base and the second fixing base respectively, and the two ends of the second movable rod are hinged to the first fixing base and the second fixing base respectively. The first fixed seat, the second fixed seat, the first movable rod and the second movable rod are arranged in a matched mode, the second movable rod, the first movable rod, the first fixed seat and the second fixed seat form a parallelogram structure, the motion trail of the parallelogram structure is fixed, the access door can be opened and closed structurally, the access door can move according to the preset trail, tight closing is achieved, the load bearing capacity is larger, and the service life of the access door is prolonged. The situation that the door plate falls and is not tightly closed due to the heavy door plate is avoided, and the use requirement is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field technology of cultural relic display cabinet, especially a cultural relic display cabinet maintenance door concealed hinge. BACKGROUND

[0002] The cultural relic display cabinet, as the name implies, is a special display device for displaying and protecting cultural relics. It not only provides visitors with the opportunity to closely observe cultural relics, but more importantly, it undertakes the heavy responsibility of protecting cultural relics from environmental damage. From the material and structure, the cultural relic display cabinet is usually made of high-strength, anti-ultraviolet glass or transparent material to ensure the clear visibility of cultural relics and prevent external light from damaging cultural relics. At the same time, the inside of the display cabinet is also equipped with a professional constant humidity and temperature system to simulate the best micro-environment suitable for the preservation of cultural relics. This environmental control is crucial to prevent cultural relics from being damaged by dampness, mold, oxidation, etc.

[0003] For some large cultural relic display cabinets, a maintenance door is usually provided, and the door panel is rotatably installed on the door frame through a general hinge. This structure has limited load-bearing capacity, and the door panel is prone to sagging and not tightly closed when it is heavy, which fails to meet the use requirements. Therefore, it is necessary to study a scheme to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] In view of the above, the utility model mainly aims at the defects of the prior art, and provides a cultural relic display cabinet maintenance door concealed hinge, which can effectively solve the problems of limited load-bearing capacity and easy sagging of the door panel of the existing cultural relic display cabinet maintenance door installed through a hinge.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A cultural relic display cabinet maintenance door concealed hinge comprises a first fixed seat fixedly installed with a door frame of a cultural relic display cabinet, a second fixed seat fixedly installed with a door panel of the cultural relic display cabinet, a first movable rod, and a second movable rod. The two ends of the first movable rod are hingedly connected with the first fixed seat and the second fixed seat, respectively. The two ends of the second movable rod are hingedly connected with the first fixed seat and the second fixed seat, respectively. The second movable rod and the first movable rod are opposite to each other and form a parallelogram structure with the first fixed seat and the second fixed seat.

[0007] Preferably, the first fixed seat comprises a first fixed plate and a first mounting table extending from the first fixed plate, and the first mounting table has a first mounting slot. The second fixed seat comprises a second fixed plate and a second mounting table extending from the second fixed plate, and the first mounting table has a second mounting slot. The two ends of the first movable rod are located in the first mounting slot and the second mounting slot, respectively. The two ends of the second movable rod are also located in the first mounting slot and the second mounting slot, respectively.

[0008] Preferably, the two ends of the first movable rod are hingedly connected to the first mounting table and the second mounting table through a first shaft pin and a second shaft pin respectively, and the two ends of the second movable rod are hingedly connected to the first mounting table and the second mounting table through a third shaft pin and a fourth shaft pin respectively.

[0009] Preferably, the edge of the first fixed plate is provided with a plurality of first fixed holes, and the edge of the second fixed plate is provided with a plurality of second fixed holes.

[0010] Preferably, the first fixed hole and the second fixed hole are both strip-shaped through holes.

[0011] Preferably, the first movable rod is a solid rod with a square cross section.

[0012] Preferably, the second movable rod is a solid rod with a square cross section.

[0013] The utility model discloses a movable door structure has the advantages that compared with prior art, the utility model has obvious advantages and beneficial effects, specifically speaking, from the above technical scheme can know that:

[0014] By cooperation setting up first fixed seat, second fixed seat, first movable rod and second movable rod, the second movable rod, first movable rod, first fixed seat and second fixed seat constitute parallelogram structure, its motion track is fixed, can realize the maintenance door switch on the structure, and can move according to predetermined track, realizes close tightly, and can bear greater, will not easily appear the situation of falling and closing not tightly because of the door plate weight, satisfies the use requirement. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the three-dimensional schematic diagram of the preferred embodiment of the utility model in the closed state;

[0016] Figure 2 It is the front view of the preferred embodiment of the utility model in the closed state;

[0017] Figure 3 It is the three-dimensional schematic diagram of the preferred embodiment of the utility model in the open state;

[0018] Figure 4 It is the front view of the preferred embodiment of the utility model in the open state.

[0019] Explanation of the attached drawing mark:

[0020] 10, first fixed seat 11, first fixed plate

[0021] 12, first mounting table 101, first mounting slot

[0022] 102, first fixed hole 20, second fixed seat

[0023] 21. Second fixed plate 22. Second mounting table

[0024] 201. Second slot 202. Second fixed hole

[0025] 30. First movable rod 40. Second movable rod

[0026] 51. First shaft pin 52. Second shaft pin

[0027] 53. Third shaft pin 54. Fourth shaft pin DETAILED DESCRIPTION

[0028] Please refer to Figures 1 to 4 The specific structure of the preferred embodiment of the present application is shown in the drawings, which comprises a first fixed seat 10 fixedly installed with the door frame of the cultural relic display cabinet access door, a second fixed seat 20 fixedly installed with the door plate of the cultural relic display cabinet access door, a first movable rod 30, and a second movable rod 40.

[0029] The first fixed seat 10 is of an integral cast iron material, which comprises a first fixed plate 11 and a first mounting table 12 extending from the first fixed plate 11. The first mounting table 12 has a first mounting slot 101, and the edge of the first fixed plate 11 is provided with a plurality of first fixed holes 102 which are strip-shaped through holes for installation and fixation with the door frame of the cultural relic display cabinet access door.

[0030] The second fixed seat 20 is of an integral cast iron material, which comprises a second fixed plate 21 and a second mounting table 22 extending from the second fixed plate 21. The second mounting table 22 has a second mounting slot 201, and the edge of the second fixed plate 21 is provided with a plurality of second fixed holes 202 which are strip-shaped through holes for installation and fixation with the door plate of the cultural relic display cabinet access door.

[0031] The two ends of the first movable rod 30 are respectively hinged to the first fixed seat 10 and the second fixed seat 20, and the two ends of the second movable rod 40 are respectively hinged to the first fixed seat 10 and the second fixed seat 20. The second movable rod 40 is opposite to the first movable rod 30 and forms a parallelogram structure with the first fixed seat 10 and the second fixed seat 20.

[0032] In this embodiment, the two ends of the first movable rod 30 are respectively located within the first mounting slot 101 and the second mounting slot 201, and the two ends of the second movable rod 40 are also respectively located within the first mounting slot 101 and the second mounting slot 201. Furthermore, the two ends of the first movable rod 30 are hinged to the first mounting platform 12 and the second mounting platform 22 via the first axle pin 51 and the second axle pin 52, respectively, and the two ends of the second movable rod 40 are hinged to the first mounting platform 12 and the second mounting platform 22 via the third axle pin 53 and the fourth axle pin 54, respectively. The first movable rod 30 is a solid rod with a square cross-section and is a straight rod. The second movable rod 40 is a solid rod with a square cross-section and is a bent rod.

[0033] The usage method of this embodiment is described in detail below:

[0034] In use, screws are used to fix the first fixing seat 10 and the second fixing seat 20 to the door frame and door panel of the artifact display case access door, respectively. Then the door panel can be opened and closed. In the closed state, as... Figure 1 and Figure 2 As shown, the second movable lever 40 is far away from the first movable lever 30, and in the open state after being rotated 90°, as... Figure 3 and Figure 4 As shown, the second movable rod 40 and the first movable rod 30 are close to each other. This product is used in pairs. A single rod can bear a weight of 30kg, and a pair can bear a weight of 60kg. This product not only meets the functional requirements but also has an aesthetic appeal. The hinge opening design can meet the problems of concealed installation and opening avoidance, and can be closed tightly when closed.

[0035] The key design feature of this utility model is that by coordinating the first fixed seat, the second fixed seat, the first movable rod, and the second movable rod, a parallelogram structure is formed by the second movable rod, the first movable rod, the first fixed seat, and the second fixed seat. The movement trajectory is fixed, and the structure enables the maintenance door to be opened and closed, and can move along a predetermined trajectory to achieve a tight seal. It can also bear greater weight and will not easily sag or fail to close properly due to the weight of the door panel, thus meeting the usage requirements.

[0036] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A concealed hinge for the access door of a cultural relic display case, characterized in that: It includes a first fixed base that is fixedly installed on the door frame of the inspection door of the artifact display case, a second fixed base that is fixedly installed on the door panel of the inspection door of the artifact display case, a first movable rod, and a second movable rod; the two ends of the first movable rod are respectively hinged to the first fixed base and the second fixed base, and the two ends of the second movable rod are respectively hinged to the first fixed base and the second fixed base, and the second movable rod and the first movable rod are opposite to each other and form a parallelogram structure with the first fixed base and the second fixed base.

2. The concealed hinge for the inspection door of a cultural relic display case as described in claim 1, characterized in that: The first fixing base includes a first fixing plate and a first mounting platform extending from the first fixing plate. The first mounting platform has a first mounting slot. The second fixing base includes a second fixing plate and a second mounting platform extending from the second fixing plate. The first mounting platform has a second mounting slot. The two ends of the first movable rod are respectively located in the first mounting slot and the second mounting slot. The two ends of the second movable rod are also respectively located in the first mounting slot and the second mounting slot.

3. The concealed hinge for the inspection door of a cultural relic display case as described in claim 2, characterized in that: The two ends of the first movable rod are respectively hinged to the first mounting platform and the second mounting platform via a first axle pin and a second axle pin, and the two ends of the second movable rod are respectively hinged to the first mounting platform and the second mounting platform via a third axle pin and a fourth axle pin.

4. The concealed hinge for the inspection door of a cultural relic display case as described in claim 2, characterized in that: The first fixing plate has multiple first fixing holes on its edge, and the second fixing plate has multiple second fixing holes on its edge.

5. The concealed hinge for the inspection door of a cultural relic display case as described in claim 4, characterized in that: Both the first fixing hole and the second fixing hole are strip-shaped through holes.

6. The concealed hinge for the inspection door of a cultural relic display case as described in claim 1, characterized in that: The first movable rod is a solid rod with a square cross-section.

7. The concealed hinge for the inspection door of a cultural relic display case as described in claim 1, characterized in that: The second movable rod is a solid rod with a square cross-section.

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