Three-rail PD door connecting structure

Abstract

The utility model relates to the technical field of PD door connecting pieces, and provides a three-rail PD door connecting structure which comprises a closer A and a closer B. The closer A and the closer B are of a wedge-shaped structure combined into a cuboid, a connecting hole is formed in the closer A, a limiting shaft is fixedly connected in the connecting hole, a limiting block is rotationally connected in the closer B, and the limiting shaft is fixedly connected in the limiting block. The closer B is located at the upper end of the limiting block and slidably connected with a sliding block, a spring is fixedly connected between the sliding block and the closer A. The limiting block is in a butterfly shape, the upper end of the limiting block is provided with a first arc-shaped abutting cavity and a second arc-shaped abutting cavity which are symmetrically arranged, and the lower end of the limiting block is provided with a third arc-shaped abutting cavity. The limiting shaft is matched with the limiting block, the spring is matched with the sliding block, the first abutting cavity and the second abutting cavity are matched during opening and closing, the limiting block is limited, the sliding friction stroke is reduced, meanwhile, the stable closing and stabilizing effect is guaranteed, abrasion to the device in the using process is reduced, the durability of the device is improved, and the service life of the device is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of PD door connector technology, and in particular to a three-track PD door connector structure. Background Technology

[0002] PD doors, also known as PT doors, are a type of door that combines the functions of sliding and hinged doors. The main feature of PD doors is that they can effectively save space while having high aesthetic appeal and practicality, making them particularly suitable for environments with limited space, such as kitchens, bathrooms, and balconies.

[0003] A PD connector locking device with publication number CN220791039U is disclosed, which includes a first connector, a second connector, a V-block, and a large end. The upper end of the first connector has a first mounting groove, the right side of the first connector is connected to the second connector, the front and rear sides of the V-block have symmetrical positioning grooves, the lower end of the large end is equipped with a support plate, and the upper end of the second connector has a groove.

[0004] In practical applications, when the PD door is closed, its limiting force mainly relies on the friction between the steel ball and the first connecting piece. Moreover, the friction stroke is relatively long each time it is opened. After long-term and repeated use, this limiting method will cause wear to the first connecting piece and its mounting groove. Once wear occurs, the closing effect of the device will gradually weaken, leading to a significant decrease in closing stability, which will ultimately affect the durability and service life of the entire device. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art that when the PD door is in the closed state, its limiting force mainly relies on the friction between the steel ball and the first connecting member. After long-term and repeated use, this limiting method will cause wear to the first connecting member and its mounting groove. Once wear occurs, the closing effect of the device will gradually weaken, leading to a significant decrease in closing stability, and ultimately affecting the durability and service life of the entire device.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a three-track PD door connection structure, including a closure A and a closure B, wherein the closure A and closure B are wedge-shaped structures combined into a cuboid. A connecting hole is provided inside the closure A, and a limiting shaft is fixedly connected inside the connecting hole. A limiting block is rotatably connected inside the closure B. A slider is slidably connected to the upper end of the closure B at the limiting block. A spring is fixedly connected between the slider and the closure A. The limiting block is butterfly-shaped, with a symmetrically arranged arc-shaped first and second abutment cavities at its upper end and an arc-shaped third abutment cavity at its lower end. The third abutment cavity is adapted to the shape of the limiting shaft. The lower end of the slider is adapted to the shape of the first and second abutment cavities. Through the cooperation of the limiting shaft and the limiting block, and through the cooperation of the spring and the slider, the first and second abutment cavities are engaged during opening and closing to limit the limiting block, reducing sliding friction stroke while ensuring a stable closing effect, reducing wear on the device during use, and improving the durability and service life of the device.

[0007] As a preferred embodiment, the outer periphery of the limiting shaft is coated with a silent and anti-slip coating to reduce contact noise and improve the user experience.

[0008] In a preferred embodiment, a support rubber pad is adhered to the top of the closure A. The support rubber pad is trapezoidal. A locking block is fixedly connected to the top of the closure A. A locking groove is provided on the closure B corresponding to the locking block. The locking groove is slidably connected to the locking block. By setting the locking block to cooperate with the locking groove, the closure B can provide support for the closure A, reduce the sinking of the closure A under the influence of gravity during use, ensure the fitting height between the closure A and the closure B, and improve the connection life between the closure A and the closure B.

[0009] In a preferred embodiment, guide blocks are provided on both sides of the slider. The guide blocks are slidably embedded in the inner wall of the closure B, which can guide and limit the movement of the slider, making the slider move more smoothly.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] 1. This utility model uses a spring in conjunction with a slider to limit the position of the limiting block during opening and closing, in conjunction with the first and second abutment cavities. This reduces the sliding friction stroke while ensuring a stable closing effect, reducing wear on the device during use, and improving the device's durability and service life.

[0012] 2. This utility model, by setting a locking block and a locking groove, can provide support for the closing device A through the closing device B, reduce the sinking of the closing device A under the influence of gravity during use, ensure the fitting height between the closing device A and the closing device B, and improve the connection life between the closing device A and the closing device B. Attached Figure Description

[0013] Figure 1 A three-dimensional disassembled structural diagram of a three-track PD door connection structure provided by this utility model;

[0014] Figure 2 A schematic diagram of the closing motion structure of a three-track PD door connection structure provided by this utility model;

[0015] Figure 3 This utility model provides a schematic diagram of the motion structure of a three-track PD door connection structure during separation.

[0016] Legend:

[0017] 1. Closing device A; 2. Closing device B; 3. Limiting shaft; 4. Limiting block; 5. Slider; 6. Guide block; 7. Spring; 8. Supporting rubber pad; 9. Locking block; 10. Locking groove; 11. Connecting hole; 12. First abutment cavity; 13. Second abutment cavity; 14. Third abutment cavity. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-3 This utility model provides a technical solution: a three-track PD door connection structure, including a closure A1 and a closure B2. The closure A1 and the closure B2 are wedge-shaped structures combined into a cuboid. The closure A1 has a connecting hole 11, and a limiting shaft 3 is fixedly connected in the connecting hole 11. The closure B2 is rotatably connected to a limiting block 4. A slider 5 is slidably connected to the upper end of the closure B2 at the limiting block 4. A spring 7 is fixedly connected between the slider 5 and the closure A1. The limiting block 4 is butterfly-shaped, and its upper end is provided with a symmetrically arranged arc-shaped first abutment cavity 12 and a second abutment cavity 13. Its lower end is provided with an arc-shaped third abutment cavity 14. The shape of the third abutment cavity 14 is adapted to the limiting shaft 3. The lower end of the slider 5 is adapted to the shape of the first abutment cavity 12 and the second abutment cavity 13.

[0020] like Figure 1-3 As shown, the outer periphery of the limiting shaft 3 is coated with a silent and anti-slip coating to reduce contact noise and improve the user experience.

[0021] like Figure 1-3As shown, a support rubber pad 8 is adhered to the top of the closure device A1. The support rubber pad 8 is trapezoidal. A locking block 9 is fixedly connected to the top of the closure device A1. A locking groove 10 is provided on the closure device B2 corresponding to the locking block 9. The locking groove 10 is slidably connected to the locking block 9. By setting the locking block 9 to cooperate with the locking groove 10, the closure device B2 can provide support for the closure device A1, reduce the sinking of the closure device A1 under the influence of gravity during use, ensure the matching height between the closure device A1 and the closure device B2, and improve the connection life between the closure device A1 and the closure device B2.

[0022] like Figure 1-3 As shown, guide blocks 6 are provided on both sides of the slider 5. The guide blocks 6 are slidably embedded in the inner wall of the closure B2, which can play the role of guiding and limiting the movement of the slider 5, making the slider 5 move more smoothly.

[0023] Working principle: When the sliding door of the PD door is closed and fixed, the closing device A will approach the closing device B. After approaching, the lower end of the limiting block 4 will contact the limiting shaft 3, causing the limiting block 4 to rotate and tilt. At this time, the slider 5 will be pushed up by the protrusion at the top of the limiting block 4 until the limiting shaft 3 enters the third abutment cavity 14 at the lower end of the limiting block 4. This eliminates the squeezing force of the limiting shaft 3 on the limiting block 4. At this time, the lower end of the limiting block 4 has no supporting force, and the spring 7 will rebound and push against the slider 5, causing the slider 5 to move downward and engage with the second abutment cavity 13, restricting the rotation of the limiting block 4. The limiting block 4 and the limiting shaft 3 form a stable state, which can be maintained in the absence of external force. When pulling open... The pressure required to engage the limiting block 4 with the spring 7 is greater than the pressure required to make the limiting block 4 rotate again until the limiting shaft 3 disengages from the third abutment cavity 14 at the lower end of the limiting block 4. The spring 7 will then rebound and press against the slider 5, causing the slider 5 to move downward and engage with the first abutment cavity 12, thus restricting the rotation of the limiting block 4. This allows the limiting block 4 to return to the closed state, providing stable closing adjustment for the next closing. When the PD door opens and closes, this device uses the limiting shaft 3 in conjunction with the first abutment cavity 12 and the second abutment cavity 13 to limit the limiting block 4, reducing the sliding friction stroke while ensuring a stable closing effect, reducing wear on the device during use, and improving the durability and service life of the device.

[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A three-track PD door connection structure, characterized in that, The device includes a closure A (1) and a closure B (2), which are wedge-shaped structures combined into a cuboid. The closure A (1) has a connecting hole (11) and a limiting shaft (3) is fixedly connected in the connecting hole (11). The closure B (2) has a limiting block (4) rotatably connected in the closure B (2). The closure B (2) is slidably connected to the upper end of the limiting block (4) with a slider (5). A spring (7) is fixedly connected between the slider (5) and the closure A (1). The limiting block (4) is butterfly-shaped and has a first abutment cavity (12) and a second abutment cavity (13) symmetrically arranged in an arc shape at the upper end, and a third abutment cavity (14) in an arc shape at the lower end. The third abutment cavity (14) is adapted to the shape of the limiting shaft (3). The lower end of the slider (5) is adapted to the shape of the first abutment cavity (12) and the second abutment cavity (13).

2. The three-track PD door connection structure according to claim 1, characterized in that: The outer periphery of the limiting shaft (3) is coated with a silent and anti-slip coating to reduce contact noise and improve the user experience.

3. The three-track PD door connection structure according to claim 1, characterized in that: The top of the closure A (1) is attached with a supporting rubber pad (8), which is trapezoidal. The top of the closure A (1) is fixedly connected with a locking block (9). The closure B (2) has a locking groove (10) corresponding to the locking block (9). The locking groove (10) is slidably connected to the locking block (9). By setting the locking block (9) to cooperate with the locking groove (10), the closure B (2) can provide support for the closure A (1), reduce the sinking of the closure A (1) under the influence of gravity during use, ensure the matching height between the closure A (1) and the closure B (2), and improve the connection life between the closure A (1) and the closure B (2).

4. The three-track PD door connection structure according to claim 1, characterized in that: Guide blocks (6) are provided on both sides of the slider (5). The guide blocks (6) are slidably embedded in the inner wall of the closure B (2) and can play the role of guiding and limiting the movement of the slider (5), making the slider (5) move more smoothly.

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