A door catch structure for heavy metal doors

Abstract

This utility model discloses a door catch structure for heavy metal doors, including a buffer component installed on the heavy metal door and a positioning component installed on the ground. The buffer component includes a sliding sleeve and an elastic telescopic component that can extend and retract relative to the sliding sleeve. The positioning component includes a mounting base and an elastic magnetic suction component that can extend and retract relative to the mounting base. The mounting base has a ramp surface and a platform located at the top of the ramp surface. When the elastic telescopic component slides along the ramp surface to the platform, it can be attracted and fixed with the elastic magnetic suction component. When the elastic magnetic suction component is pressed down, it can squeeze the elastic telescopic component from the platform to the ramp surface. This utility model optimizes the adaptability of heavy metal doors, improves load-bearing capacity and stability. Heavy metal doors are heavy and have strong inertia, solving the problem that traditional door catches cannot withstand their impact and maintain stability.

Description

Technical Field

[0001] This utility model belongs to the technical field of heavy metal doors, specifically relating to a door catch structure for heavy metal doors. Background Technology

[0002] Heavy metal doors are bulky and have strong inertia when opening and closing. Without a doorstop to restrain them, they can easily impact walls, door frames, or surrounding structures due to their own impact force, causing damage to the door, walls, or surrounding facilities, and generating significant noise. Doorstops can prevent such collisions by fixing the door in place.

[0003] A search revealed that CN107401340B discloses a door catch structure, which includes a positioning member and a buffer assembly arranged opposite each other. The positioning member has a locking connector; the buffer assembly includes a mounting base and a reset elastic member. The mounting base has a slide rail, on which a reciprocating trigger slider has a locking portion connected to the locking connector; one end of the slide rail facing the positioning member is a locking end, and the other end is a closing end. The locking connector can engage or disengage with the locking portion of the trigger slider at the locking end of the slide rail; a rotational damping structure is provided between the mounting base and the trigger slider to generate resistance as the trigger slider moves from the locking end of the slide rail to the closing end; the reset elastic member has an elastic reset force to pull the trigger slider from the locking end of the slide rail to the closing end. This door catch structure ensures the buffering effect of the door catch structure while improving its compactness.

[0004] However, existing door catch structure technology still has the following problems:

[0005] 1. It mainly relies on the tension of the reset elastic element and the mechanical limiting of the locking part, and the fixing strength of the counterweight door is relatively weak;

[0006] 2. Buffering relies on a "rotational damping structure (such as gear and rack meshing)" to convert linear motion into circumferential rotation to achieve buffering, while fixing relies on the tension of the restoring elastic element;

[0007] 3. Unlocking requires applying external force to overcome the tension of the reset elastic element, causing the trigger slider to move towards the stop end. For heavy metal doors, the required external force is greater, making operation inconvenient. Utility Model Content

[0008] The purpose of this utility model is to provide a door catch structure for heavy metal doors, so as to solve the problem mentioned in the background art that the positioning and unlocking effect of heavy metal doors does not meet the requirements.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a door catch structure for heavy metal doors, including a buffer component installed on the heavy metal door and a positioning component installed on the ground, wherein the buffer component includes a sliding sleeve and an elastic telescopic component that can extend and retract relative to the sliding sleeve;

[0010] The positioning element includes a mounting base and an elastic magnetic element that can extend and slide relative to the mounting base;

[0011] The mounting base is provided with a ramp surface and a platform located at the top of the ramp surface. When the elastic telescopic member slides along the ramp surface to the platform, it can be attracted and fixed with the elastic magnetic member. When the elastic magnetic member is pressed down, it can squeeze the elastic telescopic member from the platform to the ramp surface.

[0012] Preferably, the elastic telescopic member includes a guide post, a damping collar, and a first spring. The lower half of the guide post extends outside the sliding sleeve, and the damping collar is fixed to the outer side of the upper half of the guide post and elastically connected to the sliding sleeve by the first spring.

[0013] Preferably, the sliding sleeve has a telescopic cavity that slides with the damping collar, and guide strips are provided on both sides of the telescopic cavity. Guide grooves are provided on both sides of the damping collar to limit the sliding movement of the guide strips.

[0014] Preferably, the elastic magnetic attractor includes a slide block, which is elastically connected to the mounting base by a second spring. A U-shaped magnet is fixed to the inner side of the slide block, and a connecting rod is fixed to the outer side of the slide block. A waist-shaped groove for sliding and limiting the connecting rod is provided on the back of the ramp surface. The connecting rod extends to the outside of the mounting base and is fixed with a pedal.

[0015] Preferably, a wedge-shaped pressure block is fixed on the inner side of the top of the magnet, and a wedge-shaped slot that can be adapted to the wedge-shaped pressure block is provided on the guide post.

[0016] Preferably, the mounting base has a sliding cavity that slides with the slide block, the sliding cavity has grooves on both sides, and the slide block has protrusions on both sides that slide within the grooves.

[0017] Preferably, the side of the sliding sleeve is provided with a first ear plate, and the side of the mounting base is provided with a second ear plate, and mounting holes are provided on both the first ear plate and the second ear plate.

[0018] Compared with the prior art, this utility model provides a door catch structure for heavy metal doors, which has the following advantages:

[0019] 1. This utility model optimizes the adaptability of heavy metal doors, improving load-bearing capacity and stability. Heavy metal doors are heavy and have strong inertia, solving the problem that traditional door catches cannot withstand their impact and maintain stability.

[0020] 2. This utility model uses the elastic telescopic component and the elastic magnetic component to form a buffering and fixing synergistic mechanism, which is more efficient and adapts to the movement characteristics of heavy doors;

[0021] 3. This utility model features a step-locking elastic magnetic component, making the unlocking method more effortless and suitable for heavy doors that are difficult to operate, such as heavy metal doors. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 This is a schematic diagram of a door catch structure for heavy metal doors proposed in this utility model;

[0024] Figure 2 This is a partial cross-sectional structural diagram of the buffer component proposed in this utility model;

[0025] Figure 3 This is an exploded structural diagram of the buffer component proposed in this utility model;

[0026] Figure 4 This is a partial cross-sectional structural diagram of the positioning component proposed in this utility model;

[0027] Figure 5 This is an exploded structural diagram of the positioning component proposed in this utility model;

[0028] In the diagram: 1. Buffer component; 11. Sliding sleeve; 111. First ear plate; 112. Telescopic cavity; 113. Guide strip; 12. Elastic telescopic component; 121. Guide post; 122. Damping collar; 123. First spring; 124. Guide groove; 125. Wedge-shaped bayonet; 2. Positioning component; 21. Mounting base; 211. Sloping surface; 212. Second ear plate; 213. Platform; 214. Sliding cavity; 215. Groove; 216. Waist-shaped groove; 22. Elastic magnetic component; 221. Sliding seat; 222. Protrusion; 223. Magnet; 224. Wedge-shaped pressure block; 225. Connecting rod; 226. Pedal; 227. Second spring. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1This utility model provides a technical solution: a door catch structure for heavy metal doors, including a buffer 1 installed on the heavy metal door and a positioning member 2 installed on the ground. The buffer 1 includes a sliding sleeve 11 and an elastic telescopic member 12 that can slide relative to the sliding sleeve 11. The positioning member 2 includes a mounting base 21 and an elastic magnetic suction member 22 that can slide relative to the mounting base 21. The mounting base 21 is provided with a ramp surface 211 and a platform 213 located at the top of the ramp surface 211. When the elastic telescopic member 12 slides along the ramp surface 211 to the platform 213, it can be attracted and fixed with the elastic magnetic suction member 22. When the elastic magnetic suction member 22 is pressed down, it can squeeze the elastic telescopic member 12 from the platform 213 to the ramp surface 211.

[0031] Please see Figure 2 and Figure 3 The elastic telescopic component 12 includes a guide post 121, a damping collar 122, and a first spring 123. The lower half of the guide post 121 extends outside the sliding sleeve 11. The damping collar 122 is fixed to the outer side of the upper half of the guide post 121 and elastically connected to the sliding sleeve 11 via the first spring 123. The sliding sleeve 11 has a telescopic cavity 112 that slides with the damping collar 122. Guide strips 113 are provided on both sides of the telescopic cavity 112. Guide grooves 124 that limit the sliding movement of the guide strips 113 are provided on both sides of the damping collar 122. The sliding engagement of the damping collar 122 with the telescopic cavity 112 and the elastic compression of the first spring 123 cause the guide post 121 to slide along the slope surface 2. During the lifting process, the heavy metal door's impact is absorbed by damping and spring deformation, preventing buffer failure due to excessive door weight. The slope 211 design of the mounting base 21 causes the guide post 121 to slide with a height increase. The slope disperses the gravitational potential energy of the heavy metal door. Combined with the compression of the first spring 123 and the frictional damping of the damping collar 122, the gravitational impact is converted into elastic potential energy and heat energy, making the buffering gentler and more efficient. After the guide post 121 slides along the slope to the platform 213, it is fixed by magnetic adsorption. The horizontal structure of the platform 213 prevents the heavy door from sliding down due to gravity. In contrast, the existing "adsorption end" only relies on elastic tension, which has a weaker anti-slip effect on the heavy door.

[0032] Please see Figure 4 and Figure 5The elastic magnetic attractor 22 includes a slide 221, which is elastically connected to the mounting base 21 via a second spring 227. A U-shaped magnet 223 is fixed to the inner side of the slide 221, and a connecting rod 225 is fixed to the outer side of the slide 221. A waist-shaped groove 216 is provided on the back of the ramp surface 211 to limit the sliding of the connecting rod 225. The connecting rod 225 extends to the outside of the mounting base 21 and is fixed with a pedal 226. A wedge-shaped pressure block 224 is fixed to the inner top of the magnet 223. A wedge-shaped slot 125 that can be adapted to the wedge-shaped pressure block 224 is provided on the guide post 121. The U-shaped magnet 223 in the magnetic suction component 22 forms a ring-shaped attraction to the guide post 121. Combined with the wedge-shaped pressure block 224 and the wedge-shaped bayonet 125, the double fixing mechanism can withstand the pull of the heavy metal door and prevent accidental detachment. The connecting rod 225 is moved down by the pedal 226, which causes the slide 221 to compress the second spring 227, thereby allowing the wedge-shaped pressure block 224 to disengage from the wedge-shaped bayonet 125 and release the magnetic attraction. The slope of the ramp surface 211 and the elasticity of the first spring 123 assist the guide post 121 to slide down, without the need to directly apply external force to overcome the weight of the door, making the operation easier.

[0033] In a preferred embodiment, the mounting base 21 of this utility model is provided with a sliding cavity 214 that slides and engages with the slide block 221. The sliding cavity 214 is provided with grooves 215 on both sides, and the slide block 221 is provided with protrusions 222 that slide within the grooves 215 on both sides, which serve as guides to maintain the stable operation of the structure.

[0034] In a preferred embodiment, the sliding sleeve 11 of this utility model is provided with a first ear plate 111 on its side and a second ear plate 212 on its side. Mounting holes are provided on both the first ear plate 111 and the second ear plate 212 for mounting and fixing the buffer 1 and the positioning member 2.

[0035] The working principle and usage process of this utility model: This utility model consists of a buffer 1 installed on a heavy metal door and a positioning component 2 installed on the ground. When the heavy metal door is opened, the guide post 121 in the sliding sleeve 11 can gradually rise along the slope 211. During this process, the first spring 123 in the telescopic cavity 112 is gradually compressed. Buffering is achieved through the damping of the damping collar 122 and the elastic compression of the first spring 123. When the guide post 121 is raised from the slope 211 to the platform 213, the guide post 121 is blocked by the slide 221 and is attracted to the magnet 223 on the inner side of the slide 221 to achieve positioning.

[0036] When the heavy metal door is positioned by the magnet 223 and the guide post 121, the guide post 121 inside the magnet 223 is engaged with the wedge-shaped slot 125 on the guide post 121. Then, when the pedal 226 is stepped on, the connecting rod 225 can drive the slide block 221 to retract into the slide cavity 214. Thus, the wedge-shaped pressure block 224 squeezes the wedge-shaped slot 125 to make the guide post 121 detach from the magnet 223. At the same time, the guide post 121 moves from the platform 213 to the slope 211 and is reset by the elastic force of the first spring 123 to help the heavy metal door detach from the adsorption restriction.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A door catch structure for heavy metal doors, comprising a buffer member (1) installed on the heavy metal door and a positioning member (2) installed on the ground, characterized in that: The buffer (1) includes a sliding sleeve (11) and an elastic telescopic member (12) that can extend and slide relative to the sliding sleeve (11). The positioning element (2) includes a mounting base (21) and an elastic magnetic element (22) that can slide telescopically relative to the mounting base (21). The mounting base (21) is provided with a ramp surface (211) and a platform (213) located at the top of the ramp surface (211). When the elastic telescopic member (12) slides along the ramp surface (211) to the platform (213), it can be attracted and fixed with the elastic magnetic member (22). When the elastic magnetic member (22) is pressed down, it can squeeze the elastic telescopic member (12) from the platform (213) to the ramp surface (211).

2. The heavy metal door closer structure for a door according to claim 1, wherein: The elastic telescopic member (12) includes a guide post (121), a damping collar (122), and a first spring (123). The lower half of the guide post (121) extends to the outside of the sliding sleeve (11), and the damping collar (122) is fixed to the outside of the upper half of the guide post (121) and elastically connected to the sliding sleeve (11) by the first spring (123).

3. The door catch structure for heavy metal doors according to claim 2, characterized in that: The sliding sleeve (11) is provided with a telescopic cavity (112) that slides with the damping collar (122). Guide strips (113) are provided on both sides of the telescopic cavity (112). Guide grooves (124) are provided on both sides of the damping collar (122) to limit the sliding of the guide strips (113).

4. The door closer structure for heavy metal doors according to claim 2, characterized in that: The elastic magnetic attractor (22) includes a slide (221), which is elastically connected to the mounting base (21) by a second spring (227). A U-shaped magnet (223) is fixed on the inner side of the slide (221), and a connecting rod (225) is fixed on the outer side of the slide (221). A waist-shaped groove (216) for sliding limit of the connecting rod (225) is provided on the back of the ramp surface (211). The connecting rod (225) extends to the outside of the mounting base (21) and is fixed with a pedal (226).

5. A heavy duty door closer according to claim 4, wherein: A wedge-shaped pressure block (224) is fixed on the inner side of the top of the magnet (223), and a wedge-shaped slot (125) is provided on the guide post (121) to be adapted to the wedge-shaped pressure block (224).

6. The heavy metal door closer structure for a door according to claim 4, wherein: The mounting base (21) is provided with a sliding cavity (214) that slides with the slide block (221). The sliding cavity (214) has grooves (215) on both sides. The slide block (221) has protrusions (222) on both sides that slide within the grooves (215).

7. The heavy metal door closer according to claim 1, wherein: The sliding sleeve (11) has a first ear plate (111) on its side, and the mounting base (21) has a second ear plate (212) on its side. Mounting holes are provided on both the first ear plate (111) and the second ear plate (212).

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