A type of door catch

Abstract

This utility model discloses a door catcher, belonging to the field of door accessory technology, including a catch base and a catch head. One end of the catch base has a first connector with a first connecting surface; the end of the catch head is movably connected to a universal joint, which has a second connecting surface that can fit against and magnetically connect with the first connecting surface. The second connecting surface rotates with the universal joint to adjust its orientation. During installation, the catch head is mounted on the door, and the catch base is installed at the corresponding position at the same height on the wall. After completion, the door is brought close to the wall, so that the end of the catch head is close to the end of the catch base. The universal joint is adjusted so that the second connecting surface faces the first connecting surface until they are fully fitted. By utilizing the universal rotation of the universal joint, the second connecting surface can be adjusted at multiple angles in three-dimensional space, achieving matching of the door catcher's adsorption angle with the door's opening and closing trajectory, avoiding problems of loose connection due to minor errors when fixing the catch head and catch base.

Description

Technical Field

[0001] This invention relates to the field of door fittings technology, and more specifically, to a door closer. Background Technology

[0002] A door catcher is a device installed behind a door to fix it in place and prevent it from moving freely. Door catchers are generally magnetic and consist of two parts: a head and a base. The head is installed behind the door, and the base is installed in the corner of the wall. When the door is opened, the magnetic properties of the door catcher attract the head and base together to prevent the door from closing automatically.

[0003] In the current technical field, when the door is open, the suction block on the door closer must be precisely aligned with the suction base. This is because when the door is open, there is an angle between it and the wall; they are not parallel. Furthermore, due to the various installation positions of the door closer, the angle between the suction base and the suction head will also vary. These seemingly minor installation differences can easily lead to insufficient contact between the suction head and the suction base, ultimately causing the troublesome problem of a loose connection. Summary of the Invention

[0004] To address the technical problem of precise alignment between the suction head and the suction base during installation in existing technologies, this solution proposes a door suction device that solves this problem by incorporating a universal joint on the suction head that allows for omnidirectional rotation.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A door catch, including

[0007] A suction base, wherein one end of the suction base is provided with a first connector, and the first connector has a first connecting surface;

[0008] The suction head has a universal joint movably connected to its end. The universal joint has a second connecting surface that can be magnetically connected to and fit against the first connecting surface. The second connecting surface rotates with the universal joint to adjust its orientation.

[0009] In this application, the suction head is installed on the door, and a corresponding suction base is installed at the same height on the wall. After installation, the door is moved closer to the wall so that the end of the suction head is close to the end of the suction base. Then, the universal joint on the suction head is adjusted so that it rotates the second connecting surface toward the first connecting surface. This continues until the second connecting surface is completely aligned with the first connecting surface, allowing it to fully conform to the first connecting surface. The universal rotation of the universal joint allows for multi-angle adjustment of the second connecting surface in three-dimensional space, thereby matching the suction angle of the door suction head with the door's opening and closing trajectory. This avoids the problem of a loose connection between the suction head and the suction base due to minor errors during the fixing process.

[0010] In a door closer provided in this application, the universal joint further includes a ball and a column extending from the surface of the ball, with the second connecting surface disposed on the end face of the column. By utilizing the universal rotation of the ball, the column and the second connecting surface can be adjusted at multiple angles in three-dimensional space, thereby ensuring that the second connecting surface can flexibly adapt to different installation angles and positional requirements.

[0011] In a door catcher provided in this application, the catcher head further includes a base, one end of which has an arc-shaped groove that conforms to the spherical surface of the sphere. The sphere is rotatably embedded in the arc-shaped groove. The arc-shaped groove on the base effectively encloses the sphere. When the sphere rotates within the arc-shaped groove, the conforming relationship between the groove and the sphere provides a relatively stable and suitable environment for its rotation. This makes the rotation of the sphere within the arc-shaped groove smoother, without excessive jamming or obstruction.

[0012] In a door closer provided in this application, the suction head further includes a fixing clip with a through inner channel. One end of the inner channel is connected to the base, and the other end is fastened to the sphere. The inner channel design of the fixing clip effectively enhances the ease of connection between the suction head and the sphere. During installation, simply place the sphere in the arc-shaped groove, then pass one end of the inner channel of the fixing clip through the sphere, and finally fix it to the base to complete the fixation of the universal joint. This design not only simplifies the installation steps of the universal joint but also improves the overall structural stability.

[0013] In a door catch provided in this application, the first connecting surface and the second connecting surface are further defined as planes. The planar design allows the two connecting surfaces to form a larger contact area when they are fitted together, thereby enhancing the stability of the magnetic adsorption. Furthermore, the planar structure facilitates processing and assembly, reduces production costs, and also minimizes adsorption problems that may result from uneven surfaces.

[0014] In a door catch provided in this application, the catch holder further includes a support post, the end of which is connected to the first connector. The support post provides the necessary support strength. Furthermore, the support post can be configured to different lengths as needed, making it more flexible to adapt to different usage scenarios.

[0015] In a door closer provided in this application, the door closer includes a damping assembly. The damping assembly has a damper disposed within the support column and a striker with one end connected to the damper. The other end of the striker is connected to and protrudes from the first connecting surface. The striker's protruding end from the first connecting surface allows it to preferentially contact the second connecting surface when the door closer initially contacts the door closer. Because the contact area between the striker and the second surface is small, a loud impact sound is avoided upon contact, thus creating a relatively quiet working environment. The sliding process of the striker, in conjunction with the damper, forms a buffering mechanism, further reducing the impact when the door closer contacts the door closer, making the user experience of the door closer smoother and quieter.

[0016] In a door catch provided in this application, the first connector is further provided with a through-slide track, within which the end of the firing pin is slidably connected. The firing pin's slidable connection within the slide track ensures that the firing pin moves along a fixed trajectory when subjected to force, preventing deviation or jamming.

[0017] In a door catcher provided in this application, the striking pin further includes a needle tip and a needle rod connected to the needle tip. The needle tip is slidably connected in the slide rail, and the other end of the needle rod is connected to the damper, which provides a buffering force for the needle rod and the needle tip. The needle tip is slidably connected in the slide rail. After the first connecting surface and the second connecting surface approach each other, it can slide and retract into the interior of the slide rail, thereby achieving a magnetic connection between the first connecting surface and the second connecting surface, ensuring a tight connection between the catcher tip and the catcher base.

[0018] In a door catcher provided in this application, a rubber tip is further attached to the needle head. The rubber tip further reduces the impact noise generated when the striking pin contacts the second contact surface, and also reduces wear on the striking pin and the second contact surface, thereby extending the service life of the door catcher. The material of the rubber tip can be adjusted according to actual needs, such as using wear-resistant rubber or silicone, to meet the requirements of use in different environments.

[0019] In a door catcher provided in this application, the first connector further includes a rubber pad and a magnetic block disposed at the bottom of the rubber pad. The rubber pad and the magnetic block are located within the groove, and the first connecting surface is the end face of the rubber pad. The rubber pad can act as a buffer and can also compensate for minor errors that may occur during installation to a certain extent, making the fit between the suction head and the suction base tighter. The magnetic block ensures the stability and reliability of the adsorption force, further improving the overall performance of the door catcher.

[0020] In a door closer provided in this application, the damper is further described as either a spring damper or an air damper. Spring damping achieves a cushioning effect through the elastic deformation of a spring, offering advantages such as simple structure and low cost. Air damping, on the other hand, utilizes the compression and release of air to provide cushioning force, which can improve the smoothness and quietness of the cushioning to a certain extent. Both damping methods have their own characteristics, and users can choose the appropriate type according to their actual needs to achieve the best user experience.

[0021] The beneficial effects of this application are:

[0022] This application provides a door catcher, including a base and a head. One end of the base has a first connector with a first connecting surface. The head is movably connected via a universal joint, which has a second connecting surface that magnetically engages with the first connecting surface. In use, the head is installed on the door, and the base is installed at the corresponding position on the wall. By adjusting the universal joint, the second connecting surface is rotated at multiple angles in three-dimensional space until it fully faces and engages with the first connecting surface. This design utilizes the free rotation characteristic of the universal joint to automatically compensate for installation errors, ensuring that the head and base remain tightly adhered when the door is opened and closed, effectively solving the problem of weak connection caused by installation deviations in traditional door catchers. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the suction head and suction base of this application;

[0024] Figure 2 This is an exploded three-dimensional schematic diagram of the various components of the suction head and suction base in this application;

[0025] Figure 3 This is a three-dimensional structural diagram of the base of this application;

[0026] Figure 4 This is a three-dimensional structural diagram of the universal joint of this application;

[0027] Figure 5 This is a three-dimensional structural diagram of the fixing clip in this application;

[0028] Figure 6 This is a three-dimensional structural diagram of the first connector of this application;

[0029] Figure 7 This is a three-dimensional structural diagram of the damping component and striker connection of this application;

[0030] Figure 8 This is a three-dimensional structural diagram of the support column in this application.

[0031] Label Explanation:

[0032] 100. Suction seat; 110. First connector; 111. First connecting surface; 112. Slide rail; 113. Rubber pad; 114. Magnetic block; 120. Support column; 121. Groove; 130. Damping assembly; 131. Damper; 140. Strike pin; 141. Needle; 142. Needle bar; 143. Rubber head;

[0033] 200. Nozzle; 210. Universal connector; 211. Second connecting surface; 212. Sphere; 213. Column; 220. Base; 221. Arc groove; 230. Fixing clip; 231. Inner channel. Detailed Implementation

[0034] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal," etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for better description of this application and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationships; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0036] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments. Example 1

[0037] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0038] like Figures 1-2As shown, this application provides a door closer, including a suction base 100 and a suction head 200. One end of the suction base 100 is provided with a first connector 110, which has a first connecting surface 111. The end of the suction head 200 is movably connected to a universal joint 210, which has a second connecting surface 211 that can be magnetically connected and mated with the first connecting surface 111. The second connecting surface 211 rotates with the universal joint 210 to adjust its orientation. In this application, the suction head 200 is installed on a door, and the suction base 100 is installed at a corresponding position at the same height on the corresponding wall. After installation, the door is moved towards the wall, so that the end of the suction head 200 is close to the end of the suction base 100. Then, the universal joint 210 on the suction head 200 is adjusted, causing the second connecting surface 211 to rotate towards the first connecting surface 111. Until the second connecting surface 211 is completely facing the first connecting surface 111, allowing the second connecting surface 211 to fully conform to the first connecting surface 111. Using the universal joint 210's universal rotation, the second connecting surface 211 can be adjusted at multiple angles in three-dimensional space, thereby achieving matching between the door suction angle and the door opening and closing trajectory. This avoids the problem of loose connection between the suction head 200 and the suction base 100 due to minor errors during the fixing process. Example 2

[0039] like Figure 2 As shown in this application, the suction head 200 includes a base 220, a universal joint 210, and a fixing clip 230.

[0040] like Figures 3-4 As shown, the universal joint 210 includes a ball 212 and a column 213 extending from the surface of the ball 212. One end of the base 220 has an arc-shaped groove 221 that fits snugly against the spherical surface of the ball 212. The ball 212 is rotatably fitted into the arc-shaped groove 221. The arc-shaped groove 221 on the base 220 effectively covers the ball 212. When the ball 212 rotates within the arc-shaped groove 221, the fit between the groove and the ball provides a relatively stable and suitable environment for its rotation. This makes the rotation of the ball 212 within the arc-shaped groove 221 smoother, without excessive jamming or obstruction. A second connecting surface 211 is located on the end face of the column 213. By utilizing the omnidirectional rotation of the sphere 212, the column 213 and the second connecting surface 211 can be adjusted at multiple angles in three-dimensional space, thereby ensuring that the second connecting surface 211 can flexibly adapt to different installation angles and position requirements.

[0041] like Figure 5As shown, the fixing clip 230 has a through-hole inner channel 231. One end of the inner channel 231 is connected to the base 220, and the other end is fastened to the ball 212. The design of the inner channel 231 of the fixing clip 230 effectively enhances the ease of connection between the suction head 200 and the ball 212. During installation, simply place the ball 212 in the arc-shaped groove 221, then pass one end of the inner channel 231 of the fixing clip 230 through the ball 212, and then fix it to the base 220 to complete the fixation of the universal joint 210. This design not only simplifies the installation steps of the universal joint 210, but also improves the overall structural stability. Example 3

[0042] like Figure 4 and Figure 6 As shown, in this application, the first connecting surface 111 and the second connecting surface 211 can be planar. The planar design allows the two connecting surfaces to form a larger contact area when they are fitted together, thereby enhancing the stability of magnetic adsorption. In addition, the planar structure facilitates processing and assembly, reduces production costs, and also reduces adsorption problems that may be caused by uneven surfaces. Example 4

[0043] like Figure 2 As shown in this application, the suction seat 100 includes a support column 120, a first connector 110, and a damping assembly 130.

[0044] like Figure 7 As shown, one end of the support column 120 is connected to the wall. The other end of the support column 120 is connected to the first connector 110. The support column 120 provides necessary support. Furthermore, the support column 120 can be configured to different lengths as needed, making it more flexible to adapt to different usage scenarios. The first connector 110 includes a rubber pad 113 and a magnetic block 114 located at the bottom of the rubber pad 113. The rubber pad 113 and the magnetic block 114 are located within a groove 121, and the first connecting surface 111 is the end face of the rubber pad 113. The rubber pad 113 acts as a buffer and can also compensate for minor errors that may occur during installation, resulting in a tighter fit between the suction head 200 and the suction base 100. The magnetic block 114 ensures the stability and reliability of the suction force, further improving the overall performance of the door closer.

[0045] like Figures 6-8As shown, the damping assembly 130 is disposed within the support column 120, and it includes a damper 131 and a striker 140. One end of the striker 140 is inserted into the damper 131, which provides a buffering force to the striker 140. The other end of the striker 140 is connected to and protrudes from the first connecting surface 111. The protrusion of the end of the striker 140 from the first connecting surface 111 allows the striker 140 to preferentially contact the second connecting surface 211 when the suction head 200 initially contacts the suction base 100. Due to the small contact area between the striker 140 and the second contact surface, a large impact sound can be avoided at the moment of contact, thus creating a relatively quiet working environment. The sliding process of the striker 140, in conjunction with the damper 131, forms a buffering mechanism, further reducing the impact when the suction head 200 contacts the suction base 100, making the door closer user experience smoother and quieter.

[0046] like Figures 6-8 As shown, the first connector 110 has a through-slide 112, within which the end of the firing pin 140 is slidably connected. The firing pin 140's slidable connection within the slide 112 ensures that it moves along a fixed trajectory when subjected to force, preventing deviation or jamming. Furthermore, the firing pin 140 includes a needle head 141 and a needle rod 142 connected to the needle head 141. The needle head 141 is slidably connected in the slide 112, and the other end of the needle rod 142 is connected to a damper 131, which provides buffering force to the needle rod 142 and the needle head 141. The needle head 141 is slidably connected in the slide 112. After the first connecting surface 111 and the second connecting surface 211 approach each other, it can slide and retract into the slide 112, thereby achieving a magnetic connection between the first connecting surface 111 and the second connecting surface 211, ensuring a tight connection between the suction head 200 and the suction base 100.

[0047] like Figures 6-8 As shown, a rubber head 143 is connected to the needle 141. The rubber head 143 further reduces the impact noise generated when the striking pin 140 contacts the second contact surface 211, and also reduces wear on the striking pin 140 and the second contact surface, thereby improving the service life of the door catch. The material of the rubber head 143 can be adjusted according to actual needs, such as using wear-resistant rubber or silicone, to meet the usage requirements in different environments.

[0048] The damper 131 can be either spring damper or air damper. Spring damping achieves a cushioning effect through the elastic deformation of a spring, offering advantages such as simple structure and low cost. Air damping, on the other hand, utilizes the compression and release of air to provide cushioning force, which can improve the smoothness and quietness of the cushioning to a certain extent. Both damping methods have their own characteristics, and users can choose the appropriate type according to their actual needs to achieve the best user experience.

[0049] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited to this. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A door holder characterised in that, include A suction base (100) is provided at one end of a first connector (110), and the first connector (110) has a first connecting surface (111). The suction head (200) is movably connected to a universal joint (210) at its end. The universal joint (210) is provided with a second connecting surface (211) that can be in contact with and magnetically connected to the first connecting surface (111). The second connecting surface (211) rotates with the universal joint (210) to adjust the orientation of the second connecting surface (211).

2. A door closer as claimed in claim 1, characterised in that The universal joint (210) includes a ball (212) and a column (213) extending from the surface of the ball (212), and the second connecting surface (211) is provided on the end face of the column (213).

3. A door closer as claimed in claim 2, characterised in that The suction head (200) includes a base (220), one end of which is provided with an arc-shaped groove (221) that fits against the spherical surface of the sphere (212), and the sphere (212) is rotatably embedded in the arc-shaped groove (221).

4. A door closer as claimed in claim 3, characterised in that The suction head (200) includes a fixing clip (230), which has a through inner channel (231). One end of the inner channel (231) is connected to the base (220), and the other end is fastened to the sphere (212).

5. A door closer as claimed in claim 1, characterised in that The first connecting surface (111) and the second connecting surface (211) are planes.

6. The door closer of any one of claims 1 to 5, wherein The suction cup (100) includes a support (120), the end of which is connected to the first connector (110).

7. A door closer as claimed in claim 6, characterised in that The suction seat (100) includes a damping assembly (130) having a damper (131) disposed within the support column (120) and a striker (140) having one end connected to the damper (131), the other end of the striker (140) being connected to the first connecting surface (111) and protruding from the first connecting surface (111).

8. A door closer as claimed in claim 7, characterised in that The first connector (110) has a through slide (112) inside, and the end of the firing pin (140) is slidably connected inside the slide (112).

9. A door closer as claimed in claim 8, characterised in that The firing pin (140) includes a needle tip (141) and a needle bar (142) connected to the needle tip (141). The needle tip (141) is slidably connected in the slide rail (112), and the other end of the needle bar (142) is connected to the damper (131). The damper (131) provides a buffering force for the needle bar (142) and the needle tip (141).

10. A door closer as claimed in claim 9, characterised in that A rubber head (143) is connected to the needle (141).

11. The door catch according to claim 6, characterized in that, The first connector (110) includes a rubber pad (113) and a magnetic block (114) disposed at the bottom of the rubber pad (113). The rubber pad (113) and the magnetic block (114) are located in the groove (121), and the first connecting surface (111) is the end face of the rubber pad (113).

12. A door closer as claimed in claim 7, characterised in that The damper (131) is a spring damper or an air damper.

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