A door catch that is easy to install

Abstract

This invention relates to a door closer that is easy to install, including a door closer head and a door closer base that mates with the door closer head. The door closer base includes a connecting plate and a main body assembly connected to the connecting plate. A first fastening device for connecting to a door panel is mounted on the connecting plate. A sliding connection structure is provided between the connecting plate and the main body assembly to achieve a detachable connection between the two. A locking mechanism is also provided between the connecting plate and the main body assembly to lock the connecting plate and the main body assembly, thereby preventing relative sliding. This invention uses a sliding connection structure to slidably connect the connecting plate and the main body assembly, allowing the main body assembly to be quickly installed after the connecting plate is fixed once by the first fastening device. This avoids the cumbersome installation operations of repeatedly removing bolts, as is common in traditional door closers, making disassembly and replacement more convenient, significantly shortening installation time and reducing labor costs.

Description

Technical Field

[0001] This utility model relates to the field of door and window accessories, specifically to a door catch that is easy to install. Background Technology

[0002] Doorstops, as a common door and window accessory, are mainly used to prevent doors and windows from being damaged by collisions during closing, while keeping the door open to facilitate the passage of people or the moving of goods. They are widely used in various scenarios such as homes, offices, and commercial buildings.

[0003] Traditional door catches typically consist of two parts: a door catch head and a door catch base. The door catch base is usually installed on the side or bottom of the door, while the door catch head is installed on the wall or floor. The door is positioned by magnetic or mechanical attraction between the door catch head and the door catch base.

[0004] However, most existing door catch holders are one-piece structures, requiring direct fixing to the door panel or wall using bolts or other fasteners during installation. Due to the high precision required for the door catch holder's installation position, repeated adjustments are necessary to ensure accurate alignment with the door catch head. This process involves constant disassembly and retightening of bolts, resulting in complex procedures, significant time and labor costs, and low installation efficiency. Furthermore, once the door catch holder is bolted in place, its position is difficult to adjust. During actual installation, factors such as construction errors, door panel deformation, or changes in usage requirements may necessitate fine-tuning of the door catch holder's position. Existing one-piece door catch holders cannot perform this function, requiring disassembly and re-drilling for installation. This not only increases installation difficulty but may also damage the door panel or wall, affecting aesthetics and structural integrity. Therefore, overcoming the aforementioned defects and providing a door catch that is easy to install and adjustable has become an important issue that urgently needs to be addressed by those skilled in the art. Utility Model Content

[0005] This invention overcomes the shortcomings of the above-mentioned technologies and provides a door catch that is easy to install.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A door catcher that is easy to install includes a door catcher head and a door catcher base that cooperates with the door catcher head. The door catcher base includes a connecting plate and a door catcher base main body assembly connected to the connecting plate. A first fastening device for connecting to a door panel is installed on the connecting plate. A sliding connection structure is provided between the connecting plate and the door catcher base main body assembly to realize the detachable connection between the two. A locking mechanism is also provided between the connecting plate and the door catcher base main body assembly to lock the connecting plate and the door catcher base main body assembly to prevent the two from sliding relative to each other.

[0007] Furthermore, the main body assembly of the door catcher includes a first base slidably connected to the connecting plate, an elastic telescopic member mounted on the first base, and a latch. The main body assembly of the door catcher also includes an internally hollow outer cover that covers the connecting plate, the first base, and the elastic telescopic member. The connecting plate is slidably connected to the inner bottom of the outer cover, and its sliding stroke is limited between the left and right sides of the outer cover. One end of the latch is connected to the elastic telescopic member, and the other end extends out of the outer cover. The latch is used to cooperate with the door catcher head to realize the engagement / unlocking of the door catcher head and the door catcher.

[0008] Furthermore, the locking mechanism includes a first through hole on the outer cover, a second through hole on the first base corresponding to the first through hole, and a pin that passes through the first through hole and out of the second through hole and presses against the connecting plate at its front end.

[0009] Furthermore, the sliding connection structure includes a connecting block disposed on the connecting plate and a connecting hole opened on the first base for the connecting block to slide into. A receiving space is formed between the connecting block and the connecting plate to facilitate engagement with the bottom wall of the first base.

[0010] Furthermore, the first fastening device includes a first screw hole formed on the connecting plate and a first screw passing through the first screw hole from top to bottom.

[0011] Furthermore, flexible rubber pads are installed on both the front and rear sides of the first base, with the flexible rubber pads extending out of the first base on both sides, and the outer cover is pressed tightly against the outside of the first base by the interference fit of the flexible rubber pads.

[0012] Furthermore, the door catch head includes a second base and a second fastening device mounted on the second base for connecting to the ground. The second base includes a seat body and a front plate detachably connected to the seat body, and the second fastening device is connected to the seat body.

[0013] Furthermore, the second fastening device includes an expansion tube and a second screw threaded into the expansion tube. The base has a second screw hole, the end of the second screw extends out of the second screw hole, and the head abuts against the inner wall of the second base.

[0014] Furthermore, the base includes symmetrically arranged mounting cavities and a groove disposed between the two mounting cavities. The groove communicates with the mounting cavities on both sides. Each of the two mounting cavities is equipped with a movable pin and a spring, and the ends of the two movable pins can extend and retract within the groove.

[0015] Furthermore, the seat also includes a sealing block that is detachably disposed in the mounting cavity to seal the mounting cavity, and the sealing block is recessed with an arc-shaped groove for cooperating with the mounting spring and the movable pin.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. This design uses a sliding connection structure to connect the connecting plate to the main component of the door catch seat. This allows the main component of the door catch seat to be quickly installed after the connecting plate is fixed by the first fastening device. This avoids the tedious installation operations of repeatedly disassembling bolts, which is common in traditional door catches, and makes disassembly and replacement more convenient. In scenarios requiring batch installation, the mounting holes of the connecting plate can be pre-fabricated. On-site installation only requires fixing the connecting plate and assembling the main component, which greatly shortens the installation time and reduces labor costs.

[0017] 2. By setting a sliding connection structure, the main component of the door catch seat can be finely adjusted along the connecting plate, which can effectively deal with minor construction errors such as door panel installation tilt, door panel deformation, and door catch installation position deviation, without the need to re-drill holes or disassemble the door catch, making it highly practical. Attached Figure Description

[0018] Figure 1 This is a 3D view of the door catch head and door catch base in their mating state in this case.

[0019] Figure 2 This is an exploded view of the door catch in this case.

[0020] Figure 3 This is an exploded view of the door closer in this case. Detailed Implementation

[0021] The following examples provide a more detailed description of the features and other related characteristics of this utility model, to facilitate understanding by those skilled in the art: like Figures 1 to 3As shown, this invention provides a conveniently installed door catch, including a door catch head 1 and a door catch base 2 that cooperates with the door catch head 1. The door catch head 1 is used to install on a wall or floor, while the door catch base 2 is used to install on the side or bottom of a door, achieving door positioning through their cooperation. The door catch base 2 includes a connecting plate 21 and a door catch base main assembly 22 connected to the connecting plate 21. A first fastening device 3 for connecting to the door panel is installed on the connecting plate 21. This invention facilitates the assembly and disassembly of the door catch base 2 by structurally dividing it into two independent parts: the door catch base main assembly 22 and the connecting plate 21. The first fastening device 3 serves as a fixed connector between the connecting plate 21 and the door panel, firmly locking the connecting plate 21 to a preset position on the door panel. A sliding connection structure 4 is provided between the connecting plate 21 and the door catch base main assembly 22 to achieve a detachable connection between the two. The sliding connection structure 4 enables a detachable sliding connection between the connecting plate 21 and the door catch main assembly 22, allowing the door catch main assembly 22 to move freely along the slide rail direction of the connecting plate 21 while restricting relative displacement between the two in the direction perpendicular to the sliding direction. This detachable structure allows for tool-free installation and removal of the door catch main assembly 22, significantly improving installation efficiency. Furthermore, the sliding connection allows for fine-tuning of the position of the door catch main assembly 22 to better accommodate installation position errors. A locking mechanism 5 is also provided between the connecting plate 21 and the door catch main assembly 22 to lock them together and prevent relative sliding. After the door catch main assembly 22 is adjusted to the target position relative to the connecting plate 21, the locking mechanism 5 restricts relative sliding, ensuring the stability of the door catch main assembly 22 during use. Compared with existing technologies, the door catch holder 2 with this structure is faster and more efficient to install, saves costs, is easy to disassemble and replace, and allows for fine-tuning of the position of the main component 22 of the door catch holder relative to the connecting plate 21 to meet the needs of different installation scenarios, greatly improving the flexibility and adaptability of installation.

[0022] Reference Figure 1 , Figure 2As shown, specifically, the door catch main assembly 22 includes a first base 221 slidably connected to the connecting plate 21, an elastic telescopic member 222 mounted on the first base 221, and a latch 223. The first base 221 provides a mounting carrier for the elastic telescopic member 222 and the connecting plate 21, and also serves as a connecting component for the sliding engagement between the door catch main assembly 22 and the connecting plate 21. The door catch main assembly 22 also includes an internally hollow outer cover 224 that covers the connecting plate 21, the first base 221, and the elastic telescopic member 222. The connecting plate 21 is slidably connected to the inner bottom of the outer cover 224, and its sliding stroke is limited between the left and right sides of the outer cover 224. By providing an internally hollow outer cover 224, each component is covered and protected. In addition, the outer cover 224 can effectively limit the sliding stroke of the connecting plate between its left and right sides, thereby limiting the sliding range of the door catch main assembly 22 relative to the connecting plate 21 and preventing excessive sliding that could lead to structural detachment. Furthermore, the outer cover can limit the elastic telescopic member 222, preventing it from detaching from the first base 221 during movement. One end of the latch 223 is connected to the elastic telescopic member 222, and the other end extends outside the outer cover 224 to facilitate engagement with the door catch 1. The latch 223 is used to engage with the door catch 1 to achieve the locking / unlocking of the door catch 1 and the door catch base 2. It should be noted that the specific structure of the elastic telescopic member 222 and the latch 223, as well as the working principle during overall movement, can be implemented with reference to the content disclosed in the invention patent application document with publication number CN115874886A.

[0023] Specifically, continue to refer to Figure 1 , Figure 2 As shown, the locking mechanism 5 includes a first through hole 51 on the outer cover 224, a second through hole 52 on the first base 221 corresponding to the first through hole 51, and a pin 53 that passes through the first through hole 51 and out of the second through hole 52, with its front end pressing against the connecting plate 21. When it is necessary to lock the connecting plate 21 to the door catch body assembly 22, simply pass the pin 53 through the first through hole 51 on the outer cover and the second through hole 52 on the first base 221 in sequence, and press the front end of the pin 53 against the connecting plate 21. This effectively prevents relative sliding between the connecting plate 21 and the door catch body assembly 22, thereby ensuring the stability of their connection. When it is necessary to disassemble or adjust the position of the door catch body assembly 22, simply loosen and pull out the pin to easily separate or change the position of the door catch body assembly 22 and the connecting plate 21. The operation is simple and quick. This locking mechanism has a simple structure, reducing processing costs and assembly difficulty. In practice, two sets of locking mechanisms are symmetrically arranged front and rear, forming a bidirectional top-pressing fixation, effectively ensuring the stability of the connection between the connecting plate 21 and the door suction seat main body assembly 22. That is to say, it can effectively ensure the stability of the connection between the connecting plate 21, the outer cover 224 and the first base 221.

[0024] Reference Figure 1 , Figure 2 As shown, specifically, the sliding connection structure 4 includes a connecting block 41 disposed on the connecting plate 21 and a connecting hole 42 formed on the first base 221 for the connecting block 41 to slide into. A receiving space 43 is formed between the connecting block 41 and the connecting plate 21 to facilitate engagement with the bottom wall of the first base 221. In specific implementation, the connecting block 41 and the connecting plate 21 are integrally stamped and formed, which is convenient for manufacturing, saves costs, and has high overall structural strength. In specific implementation, the connection is achieved by sliding the connecting block 41 after it is engaged in the connecting hole 42. The receiving space 43 is the gap space formed between the connecting block 41 and the connecting plate 21, and its function is to engage with the bottom wall of the first base 221. This engaging structure restricts the relative displacement of the connecting plate 21 and the first base 221 in the vertical direction, preventing loosening or detachment during use. To ensure a secure connection, two connecting blocks 41 are provided, each facing either right or left. Correspondingly, two connecting holes 42 are also provided, with the spacing between the two connecting blocks 41 matching the hole spacing of the connecting holes 42, ensuring that the connecting blocks 42 can be accurately and stably inserted into the connecting holes 41. This sliding connection structure not only makes the connection process between the connecting plate 21 and the main body assembly 22 of the door catch seat smoother, but also further enhances the stability of the connection by engaging with the bottom wall of the first base 221 through the accommodating space, effectively preventing loosening or detachment during use. Furthermore, this structure is simple, low-cost, and easy to disassemble and assemble. When maintenance or replacement of parts is required, simply slide the connecting block 41 out of the connecting hole 42; the operation is simple and convenient, greatly improving the maintenance efficiency of the door catch.

[0025] Continue to refer to Figure 1 , Figure 2 As shown, specifically, the first fastening device 3 includes a first screw hole 31 formed on the connecting plate 21 and a first screw 32 passing through the first screw hole 31 from top to bottom. In specific implementation, for secure installation, two first screw holes 31 and two first screws 32 are symmetrically arranged. During installation, the connecting plate 21 is first placed in a suitable position on the door panel, and the position of the first screw hole 31 is marked. Then, a hole corresponding to the first screw hole 31 is drilled on the door panel using a tool. Next, the first screw 32 is passed through the first screw hole 31 and screwed into the hole on the door panel. By tightening the first screw 32, the connecting plate 21 is firmly fixed to the door panel. This connection method not only ensures the stability of the connection between the connecting plate 21 and the door panel, but also facilitates disassembly and assembly. At the same time, the position of the connecting plate 21 can be finely adjusted according to the actual situation to better meet the installation requirements.

[0026] Furthermore, continue to refer to Figure 1 , Figure 2As shown, flexible rubber pads 6 are installed on both the front and rear sides of the first base 221. The flexible rubber pads 6 extend beyond the first base 221 on both sides, and the outer cover 224 is pressed tightly against the outside of the first base 221 by the interference fit of the flexible rubber pads 6. In specific implementation, the flexible rubber pads 6 on both sides are symmetrically arranged front and rear, and they can be made of flexible materials such as rubber or silicone. In specific implementation, the flexible rubber pad on the front side plays a role in buffering and silencing the movement of the touch tongue 223. Through the joint cooperation of the flexible rubber pads 6 on the front and rear sides, a certain elastic compression space is provided when the outer cover 224 is assembled with the first base 221. The interference fit ensures a tight connection between the outer cover 224 and the first base 221 and reduces the gap, effectively preventing dust, debris, etc. from entering the interior, protecting the internal elastic telescopic parts 222 and other precision components from external environmental interference, and extending the service life of the door closer. At the same time, the part of the flexible rubber pad 6 extending out of the first base 221 can reduce the hard contact wear between the outer cover 224 and the first base 221. At the same time, this interference fit clamping method eliminates the need for additional complex fixing structures, simplifying the assembly process and reducing production costs.

[0027] Reference Figure 1 , Figure 3 As shown, the door catcher 1 of this invention includes a second base 11 and a second fastening device 12 mounted on the second base 11 for connection to the ground. The second base 11 includes a seat body 111 and a front plate 112 detachably connected to the seat body 111. The second fastening device 12 is connected to the seat body 111, so that the second fastening device 12 can be operated after the front plate 112 is removed, thus facilitating disassembly and assembly. In this invention, the detachable connection between the front plate 112 and the seat body 111 is preferably a snap-fit ​​engagement. This door catcher 1 with this structure makes it more convenient to connect the door catcher to the ground. When it is necessary to install or remove the door catcher 1, it is only necessary to remove the front plate 112 from the seat body 111 to directly operate the second fastening device 12, without the need for a complicated disassembly process of the entire door catcher 1. During installation, the front panel 112 is removed from the base 111, the second fastening device 12 is then connected to the ground or wall, and finally the front panel 112 is closed to complete the installation. The installation is convenient and simple, and the second fastening device 12 can be effectively hidden to avoid interference between the parts and the door panel or wall, and it is also more aesthetically pleasing.

[0028] Continue to refer to Figure 1 , Figure 3As shown, specifically, the second fastening device 12 includes an expansion tube 121 and a second screw 122 threaded into the expansion tube 121. A second screw hole 1111 is provided on the base 111. The end of the second screw 122 extends out of the second screw hole 1111, and its head abuts against the inner wall of the second base 11. During installation, the expansion tube 121 is first inserted into a pre-drilled hole in the ground to ensure it is securely embedded. Then, the second screw 122 is screwed into the expansion tube 121. By adjusting the screwing depth, the end of the second screw 122 extends out of the second screw hole 1111, and its head presses firmly against the inner wall of the second base 11. Thus, the second screw 122 and the expansion tube 121 work together to firmly fix the second base 11 to the ground. The second fastening device 12 in this case also considers ease of assembly and disassembly. When it is necessary to disassemble the second base 11, simply loosen the second screw 122 to easily remove the second base 11 from the ground, without complicated operating steps, which greatly improves the efficiency of disassembly and assembly of the second base 11. In addition, the combination of the expansion tube 121 and the second screw 122 also has good versatility and adaptability, and can adapt to ground with different materials and hardness.

[0029] Furthermore, continue to refer to Figure 1 , Figure 3As shown, the seat 111 includes symmetrically arranged mounting cavities 1112 and grooves 1113 disposed between the two mounting cavities 1112. The grooves 1113 communicate with the mounting cavities 1112 on both sides. Movable pins 7 and springs 8 are respectively installed in each of the two mounting cavities 1112. The ends of the two movable pins 7 can extend and retract within the grooves 1113. When the door catch 1 engages with the door catch seat 2, the latch 223 extends into the groove 1113 and presses against the movable pins 7, causing the movable pins 7 to retract into the mounting cavities 1112. Simultaneously, the springs 8 are compressed. As the latch 223 enters, the elastic restoring force of the springs 8 pushes the movable pins 7 outward and pulls against the latch 223, causing the movable pins 7 to return to their initial position and lock the latch 223. This design allows the movable pins 7 to extend and retract flexibly during the engagement and disengagement of the door catch 1 with the door catch seat 2, ensuring smooth engagement and disengagement. Furthermore, the symmetrically arranged mounting cavities 1112 and the internal movable pin 7 and spring 8 structure make the door catcher 1 more evenly and stably stressed, effectively avoiding jamming or damage caused by uneven stress. This structure also facilitates production and assembly; during manufacturing, the movable pin 7 and spring 8 only need to be accurately installed into the mounting cavity 1112, improving production efficiency and product quality. Specifically, the end of the movable pin 7 is bullet-shaped. This bullet-shaped end reduces contact friction with the latch, allowing the latch 223 to press against the movable pin more smoothly, avoiding jamming, especially in cases of slight installation misalignment or long-term impact wear. It still allows the latch 223 to easily and accurately enter the groove 1113 and engage the movable pin 7. Simultaneously, the bullet-shaped arc surface of the movable pin 7 disperses stress, reducing component wear. To further cooperate with the movable pin 7 and allow the contact tongue 223 to better engage with it, the contact tongue 223 is pliers-shaped, including an upper arm, a lower wall, and a groove between the upper and lower walls. The upper arm has two downward-sloping sides forming symmetrical arc-shaped bevels. Through the arc-shaped bevels and the bullet-shaped movable pin 7, the stability of the contact tongue 223 engaging with the movable pin 7 is further ensured. Specifically, even if there is a slight shift or misalignment in the position of the two, the contact tongue 223 can still be stably engaged with the movable pin 7, completing the engagement between the two.

[0030] Furthermore, continue to refer to Figure 1 , Figure 3As shown, the base 111 also includes a sealing block 9 detachably disposed within the mounting cavity 1112 to seal the mounting cavity 1112. The sealing block 9 has an arc-shaped groove 91 recessed on it for mate installation of the spring 8 and the movable pin 7. In specific implementations, the sealing block 9 is made of flexible materials such as silicone or rubber, and is detachably installed within the mounting cavity 1112 via an interference fit, sealing the mounting cavity 1112 and limiting the internal components. This interference fit using flexible materials requires no additional fasteners, making disassembly and assembly convenient. It facilitates the installation, replacement, and maintenance of the spring 9 and the movable pin 7. Simultaneously, sealing the mounting cavity 112 prevents dust and foreign objects from entering, protecting the normal extension and contraction of the spring 8 and the movable pin 7. The arc-shaped groove 91 provides positioning support for the spring 8 and the movable pin 7, limiting their radial offset within the mounting cavity, ensuring the stability of the spring 8's extension and contraction direction, preventing the movable pin 7 from tilting under force, and improving the smoothness of the movable pin 7's movement.

[0031] As stated above, this case protects a door closer that is easy to install, and all technical solutions that are the same as or similar to this case should be considered to fall within the scope of protection of this case.

Claims

1. A door closer of the type comprising a door closer head (1) and a door closer base (2) cooperating with said door closer head (1), characterized in that: The door catch (2) includes a connecting plate (21) and a door catch main body assembly (22) connected to the connecting plate (21). A first fastening device (3) for connecting with a door panel is installed on the connecting plate (21). A sliding connection structure (4) is provided between the connecting plate (21) and the door catch main body assembly (22) to realize the detachable connection between the two. A locking mechanism (5) is also provided between the connecting plate (21) and the door catch main body assembly (22) to lock the connecting plate (21) and the door catch main body assembly (22) to prevent the two from sliding relative to each other.

2. A door closer of claim 1 wherein: The main body assembly (22) of the door catcher includes a first base (221) slidably connected to the connecting plate (21), an elastic telescopic member (222) and a tongue (223) mounted on the first base (221). The main body assembly (22) of the door catcher also includes an inner hollow outer cover (224) that covers the connecting plate (21), the first base (221) and the elastic telescopic member (222). The connecting plate (21) is slidably connected to the inner bottom of the outer cover (224) and its sliding stroke is limited between the left and right sides of the outer cover (224). One end of the tongue (223) is connected to the elastic telescopic member (222) and the other end extends out of the outer cover (224). The tongue (223) is used to cooperate with the door catcher (1) to realize the locking / unlocking of the door catcher (1) and the door catcher (2).

3. A door closer of the type defined in claim 2, characterised in that: The locking mechanism (5) includes a first through hole (51) on the outer cover (224), a second through hole (52) on the first base (221) corresponding to the first through hole (51), and a pin (53) that passes through the first through hole (51) and out of the second through hole (52) and whose front end presses against the connecting plate (21).

4. A door closer of the type defined in claim 2, wherein: The sliding connection structure (4) includes a connecting block (41) disposed on the connecting plate (21) and a connecting hole (42) opened on the first base (221) for the connecting block (41) to slide into. A receiving space (43) is formed between the connecting block (41) and the connecting plate (21) to facilitate engagement with the bottom wall of the first base (221).

5. A door closer of claim 1, wherein: The first fastening device (3) includes a first screw hole (31) opened on the connecting plate (21) and a first screw (32) passing through the first screw hole (31) from top to bottom.

6. A door closer of the type defined in claim 2, wherein: Flexible rubber pads (6) are installed on both the front and rear sides of the first base (221). The flexible rubber pads (6) extend out of the first base (221) on both sides. The outer cover (224) is pressed tightly against the outside of the first base (221) by the interference fit of the flexible rubber pads (6).

7. A door closer of any one of claims 1 to 6, wherein: The door catcher (1) includes a second base (11) and a second fastening device (12) mounted on the second base (11) for connection with the ground. The second base (11) includes a seat (111) and a front plate (112) detachably connected to the seat (111). The second fastening device (12) is connected to the seat (111).

8. A door closer for easy installation according to claim 7, characterized in that: The second fastening device (12) includes an expansion tube (121) and a second screw (122) threaded into the expansion tube (121). The base (111) has a second screw hole (1111). The end of the second screw (122) extends out of the second screw hole (1111) and the head abuts against the inner wall of the second base (11).

9. A door closer of the type defined in claim 7, wherein: The base (111) includes symmetrically arranged mounting cavities (1112) and grooves (1113) arranged in front of the two mounting cavities (1112). The grooves (1113) are connected to the mounting cavities (1112) on both sides. Movable pins (7) and springs (8) are respectively installed in the two mounting cavities (1112). The ends of the two movable pins (7) can extend and retract in the grooves (1113).

10. A door closer according to claim 9, wherein: The seat (111) also includes a sealing block (9) that is detachably disposed in the mounting cavity (1112) to seal the mounting cavity (1112). The sealing block (9) is provided with an arc-shaped groove (91) for cooperating with the mounting spring (8) and the movable pin (7).

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