Magnetic powder clutch type door closer

Abstract

The utility model relates to door stop technology field, proposes a kind of magnetic powder clutch type door stop, including base, is connected on door body;Roller rotation is arranged on base, the outer edge of roller and ground rolling contact;Magnetic powder box is arranged in the side of base and has inner cavity, and inner cavity contains magnetic powder;Rolling axle is set on the roller and is rotatably connected with base, and the first end of rolling axle is inserted into magnetic powder box;Clutch piece cover is set on the first end of rolling axle and is located in magnetic powder box, and clutch piece has first gap between the inner wall of inner cavity;Wherein, magnetic powder is under the action of external magnetic field and will fill in first gap, further prevent the rotation of clutch piece, rolling axle and roller. Through the above technical scheme, the problem that the magnetic resistance of the existing magnetic type door stop is insufficient due to the small internal magnetic body, which makes the door body stop rotating.

Description

Technical Field

[0001] This utility model relates to the field of door catch technology, specifically to a magnetic powder clutch door catch. Background Technology

[0002] A door catch is a device used to hold a door in place, preventing it from hitting a wall or floor when opening or closing. It uses magnetic or mechanical force to attract the door, ensuring that the door stays stably in the designated position when closed.

[0003] Existing magnetic door catches typically use two magnetic objects together to improve sensitivity. However, when the door catcher has wheels and the door is heavy, the door has significant momentum during movement. In this case, if the magnetic objects inside the door catcher are small, the increased magnetic force is insufficient to stop the door; conversely, if the magnetic objects are large, the door catcher becomes bulky, taking up a lot of space on the door and reducing its practicality.

[0004] Therefore, a new type of door catch is urgently needed. Utility Model Content

[0005] This invention proposes a magnetic powder clutch door catcher, which solves the problem that existing magnetic door catchers have insufficient magnetic resistance due to the small size of the internal magnetic material, causing the door to stop rotating.

[0006] The technical solution of this utility model is as follows: a magnetic powder clutch door catch, comprising...

[0007] The base is attached to the door.

[0008] A roller is rotatably mounted on the base, and the outer edge of the roller makes rolling contact with the ground.

[0009] A magnetic powder box is disposed on the side of the base and has an inner cavity containing magnetic powder.

[0010] A roller is mounted on the roller and rotatably connected to the base, with the first end of the roller inserted into the magnetic powder box;

[0011] A clutch plate is sleeved on the first end of the roller and located inside the magnetic powder box, and there is a first gap between the clutch plate and the inner wall of the inner cavity;

[0012] The magnetic powder, under the influence of an external magnetic field, will fill the first gap, thereby preventing the rotation of the clutch plate, the roller, and the wheel.

[0013] As a further technical solution, the clutch plates are multiple and coaxially arranged.

[0014] As a further technical solution, the multiple clutch plates are spaced at the same distance.

[0015] As a further technical solution, a braking protrusion is provided inside the inner cavity, the braking protrusion passes between adjacent clutch plates, and a second gap exists between the braking protrusion and the clutch plates.

[0016] As a further technical solution, a sealing ring is also included, which is sleeved on the roller and located at the junction of the base and the magnetic powder box.

[0017] As a further technical solution, a bearing is also included, which is disposed within the base and sleeved on the roller.

[0018] As a further technical solution, the magnetic powder box and the base are detachably connected by bolts.

[0019] As a further technical solution, the base includes a first base and a second base, which are detachably connected by bolts. An accommodating space is formed between the first base and the second base, and the roller is located in the accommodating space. The first end of the roller is rotatably connected to the first base, and the second end of the roller is rotatably connected to the second base.

[0020] As a further technical solution, a mounting plate is also included, which is disposed on the base and has mounting holes.

[0021] As a further technical solution, the base is provided with an installation groove, the installation plate is fitted into the installation groove, and an installation space is formed between the installation plate and the bottom wall of the installation groove.

[0022] The working principle and beneficial effects of this utility model are as follows: The magnetic powder clutch door catch includes a base, roller, magnetic powder box, roller shaft and clutch plate. The system comprises a base connected to or embedded in the door frame, a roller mounted on the base with its outer edge in contact with the ground, and the base not in contact with the ground. A magnetic powder box is located on the side of the base and has an inner cavity containing a certain amount of magnetic powder. A roller passes through the roller and rotates synchronously with it. The first and second ends of the roller are rotatably connected to the base. The first end of the roller passes through the base and extends into the interior of the magnetic powder box. A clutch plate is fitted onto the first end of the roller and rotates synchronously with it. The clutch plate is located inside the magnetic powder box, and there is a first gap between the clutch plate and the inner wall of the magnetic powder box cavity. When there is an external magnetic field, the magnetic powder fills the first gap between the clutch plate and the inner cavity, thereby increasing the frictional force on the clutch plate. When the frictional force is large enough, it can prevent the rotation of the clutch plate, thus preventing the rotation of both the roller and the roller.

[0023] The magnetic powder clutch door catcher provided by this utility model can be used in conjunction with magnetic stickers. In practical applications, the magnetic powder clutch door catcher is installed on the door, and then the magnetic sticker is attached to the ground. When the door moves to the position of the magnetic sticker during rotation, the magnetic sticker provides a magnetic field, which causes the magnetic powder in the magnetic powder box to accumulate in the first gap, thereby preventing the clutch plate from rotating, and also preventing the roller and shaft from rotating, ultimately fixing the door in the position of the magnetic sticker. Since the position of the magnetic sticker can be moved and adjusted arbitrarily, the opening angle of the door can also be adjusted arbitrarily. Attached Figure Description

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] Figure 1 An isometric schematic diagram of a magnetic powder clutch door catch provided by this utility model;

[0026] Figure 2 for Figure 1 The right view;

[0027] Figure 3 for Figure 1 The left view;

[0028] Figure 4 for Figure 1 A structural diagram from another angle;

[0029] Figure 5 for Figure 1 The diagram shows the structure behind the base and mounting plate, which is hidden in the image.

[0030] Figure 6 for Figure 5 Top view.

[0031] In the diagram: 1. Base; 2. Roller; 3. Magnetic powder box; 4. Roller shaft; 5. Clutch plate; 6. Brake protrusion; 7. Bearing; 8. Mounting plate. Detailed Implementation

[0032] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0033] like Figures 1-6 As shown, this embodiment proposes a magnetic powder clutch-type door catch, including...

[0034] Base 1, connected to the door body;

[0035] Roller 2 is rotatably mounted on base 1, and the outer edge of roller 2 makes rolling contact with the ground;

[0036] The magnetic powder box 3 is located on the side of the base 1 and has an inner cavity containing magnetic powder.

[0037] Roller 4 is mounted on roller 2 and rotatably connected to base 1. The first end of roller 4 is inserted into magnetic powder box 3.

[0038] The clutch plate 5 is sleeved on the first end of the roller 4 and located inside the magnetic powder box 3. There is a first gap between the clutch plate 5 and the inner wall of the inner cavity.

[0039] The magnetic powder, under the influence of an external magnetic field, fills the first gap, thereby preventing the rotation of the clutch plate 5, roller 4 and roller 2.

[0040] In this embodiment, the magnetic powder clutch door catch includes a base 1, a roller 2, a magnetic powder box 3, a roller 4, and a clutch plate 5. The base 1 is connected to or embedded in the door body. The roller 2 is rolled on the base 1, with its outer edge in contact with the ground, while the base 1 is not in contact with the ground. The magnetic powder box 3 is located on the side of the base 1 and has an inner cavity containing a certain amount of magnetic powder. The roller 4 passes through the roller 2 and rotates synchronously with it. Both the first and second ends of the roller 4 are rotatably connected to the base 1. The first end of the roller 4 passes through the base 1 and extends into… Inside the magnetic powder box 3, the clutch plate 5 is sleeved on the first end of the roller 4. The clutch plate 5 rotates synchronously with the roller 4. The clutch plate 5 is located inside the magnetic powder box 3, and there is a first gap between the clutch plate 5 and the inner wall of the inner cavity of the magnetic powder box 3. When there is an external magnetic field, the magnetic powder will fill the first gap between the clutch plate 5 and the inner cavity, thereby increasing the friction force on the clutch plate 5. When the friction force is large enough, it can prevent the rotation of the clutch plate 5, thereby simultaneously preventing the rotation of the roller 4 and the roller 2.

[0041] The magnetic powder clutch door catcher provided by this utility model can be used in conjunction with a magnetic sticker. In practical applications, the magnetic powder clutch door catcher is installed on the door, and then the magnetic sticker is attached to the ground. When the door moves to the position of the magnetic sticker during rotation, the magnetic sticker provides a magnetic field, which causes the magnetic powder in the magnetic powder box 3 to accumulate in the first gap, thereby preventing the rotation of the clutch plate 5, as well as the rotation of the roller 2 and roller 4, and ultimately fixing the door in the position of the magnetic sticker. Since the position of the magnetic sticker can be moved and adjusted arbitrarily, the opening angle of the door can also be adjusted arbitrarily.

[0042] It should be noted that the clutch plate and the roller are connected by a keyway.

[0043] Furthermore, such as Figures 1-2 As shown, this embodiment proposes multiple clutch plates 5 arranged coaxially. The multiple clutch plates 5 are spaced at the same distance.

[0044] In this embodiment, to improve the sensitivity of the magnetic powder clutch-type door catch, multiple clutch plates 5 are configured, and these multiple clutch plates 5 are arranged coaxially. For ease of installation and maintenance, the multiple clutch plates 5 are arranged at equal intervals.

[0045] Furthermore, such as Figures 5-6 As shown, this embodiment proposes that the inner cavity is provided with a brake protrusion 6, which passes through the adjacent clutch plates 5, and there is a second gap between the brake protrusion 6 and the clutch plates 5.

[0046] In this embodiment, to further improve the sensitivity of the magnetic powder clutch-type door catch, braking protrusions 6 are provided in the inner cavity of the magnetic powder box 3. Multiple braking protrusions 6 are arranged in a one-to-one interval with multiple clutch plates 5; that is, there is one braking protrusion 6 between any two adjacent clutch plates 5, and one clutch plate 5 between any two adjacent braking protrusions 6. A second gap exists between the clutch plate 5 and the support of the braking protrusion 6. Under the action of an external magnetic field, magnetic powder accumulates in the first and second gaps, increasing the frictional force on the clutch plate 5.

[0047] Furthermore, this embodiment also includes a sealing ring, which is sleeved on the roller 4 and located at the junction of the base 1 and the magnetic powder box 3.

[0048] In this embodiment, in order to prevent magnetic powder from leaking out of the magnetic powder box 3, a sealing ring is provided at the junction of the magnetic powder box 3 and the base 1. The sealing ring is sleeved on the roller 4. The sealing ring does not rotate relative to the base 1 and the magnetic powder box 3, but it rotates relative to the roller 4.

[0049] Furthermore, such as Figures 5-6 As shown, this embodiment also includes a bearing 7, which is disposed in the base 1 and sleeved on the roller 4.

[0050] In this embodiment, in order to improve the smoothness of the roller 2 rotation process, a bearing 7 is provided on the base 1, and the bearing 7 is sleeved on the first end and the second end of the roller 4.

[0051] Furthermore, such as Figures 1-4 As shown in the figure, this embodiment proposes a detachable connection between the magnetic powder box 3 and the base 1 by means of bolt connection.

[0052] In this embodiment, in order to facilitate the adjustment of the amount of magnetic powder in the magnetic powder box 3, the magnetic powder box 3 and the base 1 are designed to be detachable and are connected by bolts.

[0053] Furthermore, such as Figures 1-4 As shown, this embodiment proposes a base 1 including a first base and a second base. The first base and the second base are detachably connected by bolts. An accommodating space is formed between the first base and the second base. The roller 2 is located in the accommodating space. The first end of the roller 4 is rotatably connected to the first base, and the second end of the roller 4 is rotatably connected to the second base.

[0054] In this embodiment, to achieve convenient maintenance of the magnetic powder clutch door catch provided by this utility model, the base 1 is configured as two parts, namely, a first base and a second base. The first base and the second base are bolted together, forming an accommodating space between them. The first end of the roller 4 is rotatably connected to the first base, and the second end of the roller 4 is rotatably connected to the second base. The magnetic powder box 3 is located on the side of the first base. The first base and the second base are detachable, allowing for convenient maintenance and replacement of the roller 2, roller 4, and bearing 7.

[0055] Furthermore, such as Figures 1-4 As shown, this embodiment also includes a mounting plate 8, which is disposed on the base 1 and has mounting holes.

[0056] In this embodiment, when the magnetic powder clutch door catcher is fixed to the door body, the magnetic powder clutch door catcher also includes a mounting plate 8, which is connected to the base 1 and has mounting holes. The mounting holes can be threaded holes, and the mounting plate 8 is fixed to the door body by bolt connection.

[0057] Furthermore, such as Figures 1-4 As shown in the figure, this embodiment proposes that the base 1 has an installation groove, the installation plate 8 is inserted into the installation groove, and an installation space is formed between the installation plate 8 and the bottom wall of the installation groove.

[0058] In this embodiment, for convenient installation, a mounting groove is provided on the base 1, and the mounting plate 8 is snapped into the mounting groove. An installation space is formed between the mounting plate 8 and the bottom wall of the mounting groove, which can prevent nuts from being inserted, thus allowing the mounting hole to be a smooth hole. In addition, the mounting plate 8 is connected to the base 1 by a snap-fit, which can be easily disassembled, thereby facilitating the maintenance and replacement of accessories such as the magnetic powder box 3, roller 2, roller 4, and clutch plate 5.

[0059] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A magnetic powder clutch type door closer characterized by comprising: include Base (1), connected to the door body; Roller (2) is rotatably mounted on the base (1), and the outer edge of the roller (2) makes rolling contact with the ground; A magnetic powder box (3) is disposed on the side of the base (1) and has an inner cavity containing magnetic powder; A roller (4) is mounted on the roller (2) and rotatably connected to the base (1). The first end of the roller (4) is inserted into the magnetic powder box (3). The clutch plate (5) is sleeved on the first end of the roller (4) and located inside the magnetic powder box (3). There is a first gap between the clutch plate (5) and the inner wall of the inner cavity. The magnetic powder, under the influence of an external magnetic field, fills the first gap, thereby preventing the rotation of the clutch plate (5), the roller (4), and the wheel (2).

2. The magnetic powder clutch door catch according to claim 1, characterized in that, The clutch plates (5) are multiple and coaxially arranged.

3. A magnetic powder clutch-type door catch according to claim 2, characterized in that, The multiple clutch plates (5) are spaced at the same distance.

4. A magnetic powder clutch-type door catch according to claim 3, characterized in that, The inner cavity is provided with a brake protrusion (6), which passes between adjacent clutch plates (5), and there is a second gap between the brake protrusion (6) and the clutch plates (5).

5. A magnetic powder clutch-type door catch according to any one of claims 1-4, characterized in that, It also includes a sealing ring, which is sleeved on the roller (4) and located at the junction of the base (1) and the magnetic powder box (3).

6. A magnetic powder clutch door catch according to any one of claims 1-4, characterized in that, It also includes a bearing (7), which is disposed in the base (1) and sleeved on the roller (4).

7. A magnetic powder clutch door catch according to any one of claims 1-4, characterized in that, The magnetic powder box (3) and the base (1) are detachably connected by bolts.

8. A magnetic powder clutch door catch according to any one of claims 1-4, characterized in that, The base (1) includes a first base and a second base, which are detachably connected by bolts. An accommodating space is formed between the first base and the second base. The roller (2) is located in the accommodating space. The first end of the roller (4) is rotatably connected to the first base, and the second end of the roller (4) is rotatably connected to the second base.

9. A magnetic powder clutch door catch according to any one of claims 1-4, characterized in that, It also includes a mounting plate (8), which is disposed on the base (1) and has mounting holes.

10. A magnetic powder clutch-type door catch according to claim 9, characterized in that, The base (1) has an installation groove, and the installation plate (8) is fitted into the installation groove, forming an installation space between the installation plate (8) and the bottom wall of the installation groove.

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