Dustproof cover piece of manual and automatic integrated door closer

Abstract

The utility model discloses a dustproof cover piece of a manual-automatic integrated door closer, which comprises an uncovered box body and a door closer body, the door closer body is fixedly arranged in the uncovered box body, a guide shaft is arranged on the door closer body, and a panel is fixedly arranged at the upper end of the uncovered box body. The circular dustproof cover is placed on the panel, the guide shaft penetrates through the circular opening and the annular sealing ring, the annular protrusion and the four arc-shaped protrusions abut against the lower end of the circular dustproof cover, the annular insertion block is inserted into the annular insertion groove in the annular positioning block, and therefore the circular dustproof cover can be conveniently and rapidly positioned on the panel; the structure is simple and practical, buffering protection is provided for the circular dustproof cover through the arranged annular protrusion, four arc-shaped protrusions and annular inserting blocks, damage to the circular dustproof cover due to external force such as treading or foreign matter collision is avoided, good sealing is provided for the circular dustproof cover through an annular positioning block and an annular sealing ring made of a wear-resisting rubber product, and the service life of the circular dustproof cover is prolonged. And normal rotation of the guide shaft is ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of dust cover for door closers, and in particular to a dust cover for a manual / automatic door closer. Background Technology

[0002] The door closer uses a combination of metal springs and hydraulic damping to achieve a buffering effect. When the door is opened, it can be compressed and then released to automatically close the door, ensuring that the door is accurately and promptly closed to the initial position after being opened. The dust cover is a component of the automatic door closer and is a sealing buffer installed between the panel and the output shaft.

[0003] Existing door closer dust covers are fitted onto the panel, which is inconvenient to install and operate. Furthermore, the lack of a buffer structure between the dust cover and the cover plate makes them susceptible to damage from external forces such as stepping or impacts from foreign objects. This paper proposes a dust cover for a manual / automatic door closer to solve the above problems. Utility Model Content

[0004] In view of the shortcomings and defects in the existing technology, this utility model proposes a dust cover for a manual-automatic door closer, which solves the technical problems in the background technology where the dust cover of the existing door closer is embedded in the panel during actual use, which is inconvenient to install and operate, and the dust cover lacks a buffer structure between the dust cover and the cover plate, making it easy to be damaged by external forces such as stepping or impact from foreign objects.

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

[0006] A dust cover for a manual / automatic door closer includes a coverless housing and a door closer body. The door closer body is fixedly installed in the coverless housing. A guide shaft is provided on the door closer body. A panel is fixedly installed on the upper end of the coverless housing. A circular dust cover is provided on the upper end of the panel. The guide shaft is vertically and movably inserted through the panel and the circular dust cover. The lower end of the circular dust cover is movably engaged with the upper end of the panel.

[0007] Preferably, the upper end of the panel is provided with an annular protrusion and four arc-shaped protrusions, the guide shaft is disposed on the inner side of the annular protrusion, the four arc-shaped protrusions are arranged in a cross shape, and the lower end of the circular dust cover abuts and presses against the upper end of the annular protrusion and the four arc-shaped protrusions.

[0008] Preferably, the upper end of the center of the circular dust cover is provided with a circular opening, the guide shaft is vertically inserted through the circular opening, and an annular sealing ring is fixedly connected to the annular inner wall of the circular opening. The annular inner wall of the annular sealing ring slides and abuts against the annular side wall of the guide shaft.

[0009] Preferably, the annular sealing ring is a wear-resistant rubber product.

[0010] Preferably, an annular positioning block is fixedly connected to the lower end of the circular dust cover away from the center, an annular insert is provided at the upper end of the panel, an annular slot is provided at the lower end of the annular positioning block, and the annular insert is inserted into the annular slot.

[0011] Preferably, the annular protrusion, the four arc-shaped protrusions, and the annular insert are all integrally cast with the panel, and the annular positioning block is integrally cast with the circular dust cover.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] 1. By placing the circular dust cover on the panel, the guide shaft passes through the circular opening and the annular sealing ring. The annular protrusion and four arc-shaped protrusions abut and press against the lower end of the circular dust cover, and the annular insert is inserted into the annular slot on the annular positioning block. This makes it easy and quick to position the circular dust cover on the panel. The structure is simple and practical.

[0014] 2. The ring-shaped protrusion, four arc-shaped protrusions, and ring-shaped inserts, which are integrally cast with the panel, effectively provide buffer protection for the circular dust cover, preventing damage to the circular dust cover caused by external forces such as stepping or impact from foreign objects. The ring-shaped positioning block and the circular dust cover, which are integrally cast, as well as the ring-shaped sealing ring made of wear-resistant rubber, provide a good seal for the circular dust cover, ensuring the normal rotation of the guide shaft. Attached Figure Description

[0015] Figure 1 A perspective view of a dust cover for a manual / automatic door closer proposed in this utility model;

[0016] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0017] Figure 3 This is a schematic diagram of the structure of a circular dust cover for a manual / automatic door closer according to the present invention.

[0018] Figure 4 for Figure 1 A magnified view of a section at point B in the middle;

[0019] Figure 5 This is a schematic diagram of the arc-shaped protrusion of the dust cover of the manual / automatic door closer proposed in this utility model;

[0020] Figure 6 This is a schematic diagram of the annular positioning block and annular insert block of the dust cover of a manual / automatic door closer proposed in this utility model.

[0021] In the diagram: 1. Uncovered box body; 2. Door closer body; 3. Guide shaft; 4. Panel; 5. Circular dust cover; 6. Annular protrusion; 7. Arc-shaped protrusion; 8. Circular opening; 9. Annular sealing ring; 10. Annular positioning block; 11. Annular insert; 12. Annular slot. Detailed Implementation

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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.

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figure 1-6 A dust cover for a manual / automatic door closer includes a coverless housing 1 and a door closer body 2. The door closer body 2 is fixedly installed inside the coverless housing 1. A guide shaft 3 is provided on the door closer body 2. A panel 4 is fixedly installed on the upper end of the coverless housing 1. A circular dust cover 5 is provided on the upper end of the panel 4. The guide shaft 3 is vertically movable through the panel 4 and the circular dust cover 5. The upper end of the panel 4 has an annular protrusion 6 and four arc-shaped protrusions 7. The guide shaft 3 is located inside the annular protrusion 6. The four arc-shaped protrusions 7 are arranged in a cross shape. The lower end of the circular dust cover 5 abuts and presses against the upper ends of the annular protrusion 6 and the four arc-shaped protrusions 7, fixing the panel 4 to the upper end of the coverless housing 1, so that the guide shaft 3 is vertically movable through the panel 4. The circular dust cover 5 is placed on the upper part of the panel 4. The guide shaft 3 is vertically inserted through the circular opening 8 and the annular sealing ring 9. At this time, the upper ends of the annular protrusion 6 and the four arc-shaped protrusions 7 are pressed against the lower end of the circular dust cover 5, and the annular insert 11 is inserted into the annular slot 12 on the annular positioning block 10, which facilitates the quick and easy positioning of the circular dust cover 5 on the panel 4. The structure is simple and practical. The upper end of the center of the circular dust cover 5 is provided with a circular opening 8. The guide shaft 3 is vertically inserted through the circular opening 8. The annular sealing ring 9 is fixedly connected to the annular inner wall of the circular opening 8. The annular inner wall of the annular sealing ring 9 slides and abuts against the annular side wall of the guide shaft 3. The annular sealing ring 9 is made of wear-resistant rubber. The wear-resistant rubber annular sealing ring 9 can prevent impurities from entering the inner side of the circular dust cover 5 along the circular opening 8.

[0025] The lower end of the circular dust cover 5 is movably engaged with the upper end of the panel 4. An annular positioning block 10 is fixedly connected to the lower end of the circular dust cover 5 away from the center. An annular insert 11 is provided at the upper end of the panel 4, and an annular slot 12 is provided at the lower end of the annular positioning block 10. The annular insert 11 is inserted into the annular slot 12. The annular protrusion 6, the four arc-shaped protrusions 7, and the annular insert 11 are all integrally cast with the panel 4. The annular positioning block 10 is integrally cast with the circular dust cover 5. The annular protrusion 6, the four arc-shaped protrusions 7, and the annular insert 11, which are integrally cast with the panel 4, effectively provide buffer protection for the circular dust cover 5, avoiding damage to the circular dust cover 5 due to external forces such as stepping or impact from foreign objects. The integrally cast annular positioning block 10 and the circular dust cover 5, as well as the annular sealing ring 9 made of wear-resistant rubber, provide a good seal for the circular dust cover 5, ensuring the normal rotation of the guide shaft 3.

[0026] In use, the panel 4 is fixedly installed on the upper end of the lidless box 1, allowing the guide shaft 3 to move vertically through the panel 4. The circular dust cover 5 is placed on the upper end of the panel 4, allowing the guide shaft 3 to move vertically through the circular opening 8 and the annular sealing ring 9. At this time, the upper ends of the annular protrusion 6 and the four arc-shaped protrusions 7 are pressed against the lower end of the circular dust cover 5, and the annular insert 11 is inserted into the annular slot 12 on the annular positioning block 10, which facilitates and quickly positions the circular dust cover 5 on the panel 4. The structure is simple and practical. The annular protrusion 6, the four arc-shaped protrusions 7 and the annular insert 11, which are integrally cast with the panel 4, effectively provide buffer protection for the circular dust cover 5, avoiding damage to the circular dust cover 5 caused by external forces such as stepping or impact from foreign objects. The annular positioning block 10, the circular dust cover 5, and the annular sealing ring 9 made of wear-resistant rubber provide a good seal for the circular dust cover 5, ensuring the normal rotation of the guide shaft 3.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A dust cover for a manual / automatic door closer, comprising an uncovered housing (1) and a door closer body (2), wherein the door closer body (2) is fixedly installed inside the uncovered housing (1), and a guide shaft (3) is provided on the door closer body (2), characterized in that, The top of the uncovered box (1) is fixedly installed with a panel (4), and the top of the panel (4) is provided with a circular dust cover (5). The guide shaft (3) is vertically and movably installed through the panel (4) and the circular dust cover (5). The bottom of the circular dust cover (5) is movably engaged with the top of the panel (4).

2. The dust cover for a manual / automatic door closer according to claim 1, characterized in that, The upper end of the panel (4) is provided with an annular protrusion (6) and four arc-shaped protrusions (7). The guide shaft (3) is located inside the annular protrusion (6). The four arc-shaped protrusions (7) are arranged in a cross shape. The lower end of the circular dust cover (5) abuts against and presses against the upper ends of the annular protrusion (6) and the four arc-shaped protrusions (7).

3. The dust cover for a manual / automatic door closer according to claim 1, characterized in that, The circular dust cover (5) has a circular opening (8) at the upper end of its center position. The guide shaft (3) is vertically inserted through the circular opening (8). An annular sealing ring (9) is fixedly connected to the annular inner wall of the circular opening (8). The annular inner wall of the annular sealing ring (9) slides and abuts against the annular side wall of the guide shaft (3).

4. The dust cover for a manual / automatic door closer according to claim 3, characterized in that, The annular sealing ring (9) is made of wear-resistant rubber.

5. The dust cover for a manual / automatic door closer according to claim 2, characterized in that, The circular dust cover (5) is fixedly connected to an annular positioning block (10) at its lower end away from the center. The upper end of the panel (4) is provided with an annular insert (11), and the lower end of the annular positioning block (10) is provided with an annular slot (12). The annular insert (11) is inserted into the annular slot (12).

6. The dust cover for a manual / automatic door closer according to claim 5, characterized in that, The annular protrusion (6), the four arc-shaped protrusions (7) and the annular insert (11) are all integrally cast with the panel (4), and the annular positioning block (10) is integrally cast with the circular dust cover (5).

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