Connection structure of pd door

Abstract

The utility model relates to the technical field of pd door connection, and provides a pd door connection structure which comprises a closer A and a closer B which are symmetrically designed, hanger rail connection grooves are formed in the closer A and the closer B respectively, a butt joint groove is formed in the lower end of the closer A, a clamping block is fixedly connected into the closer B, the lower end of the clamping block is wavy, and the lower end of the clamping block is provided with a clamping groove. Three mounting holes are formed in the closer A and located on the two sides of the butt joint groove, the interiors of the mounting holes are in threaded connection with machine-meter screws, locking springs are fixedly connected to the ends of the machine-meter screws, and positioning steel balls are fixedly connected to the front ends of the locking springs. According to the utility model, the positions of the positioning steel balls can be adjusted by rotating the machine-meter screw, so that the clamping strength between the closer A and the closer B is adjusted, the three notches on the wavy clamping block can be simultaneously matched with the three positioning steel balls, the load is uniformly distributed to a plurality of contact points, the stress concentration of a single positioning steel ball is obviously reduced, and the clamping strength of the closer A and the closer B is improved. Local deformation or abrasion can be avoided, and the service life of the device is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of PD gate connection technology, and in particular to a PD gate connection structure. Background Technology

[0002] PD doors are mainly composed of door frames, hanging tracks, sliding doors, hinged doors, and hardware accessories such as handles and pulleys, allowing the door leaf to have two opening methods at the same time.

[0003] A PD connector locking device with publication number CN220791039U 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, and 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] When this device is closed, it achieves the closing function by using a single V-block in conjunction with positioning steel balls on both sides. However, the stability of a single steel ball on one side is insufficient. The single steel ball only provides constraint force in one direction, and it is easy for the block to accidentally disengage due to external force deviation or rotation. Although the clamping force can be adjusted by adjusting the position of the positioning steel ball, when the single steel ball contacts the single notch, all the load is concentrated at the single contact point, resulting in stress concentration. The greater the clamping force, the faster the wear of the steel ball or notch, thus reducing the service life of the device. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art where the device achieves the closing function by using a single V-block in conjunction with positioning steel balls on both sides. However, the stability of the single steel ball on one side is insufficient, and the single steel ball only provides constraint force in one direction. It is easy for the block to accidentally disengage due to external force offset or rotation. Although the clamping force can be adjusted by adjusting the position of the positioning steel ball, when the single steel ball contacts the single notch, all the load is concentrated at the single contact point, resulting in stress concentration. The greater the clamping force, the faster the wear of the steel ball or notch, thus reducing the service life of the device.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a PD door connection structure, including a symmetrically designed closure A and a closure B. Both closure A and closure B have a hanging rail connection groove. The lower end of closure A has a mating groove. A locking block is fixedly connected inside closure B. The lower end of the locking block is wavy. Closure A has three mounting holes on both sides of the mating groove. Each mounting hole is threaded with a grommet screw. A locking spring is fixedly connected to the end of the grommet screw. A positioning steel ball is fixedly connected to the front end of the locking spring. The positioning steel ball matches the wavy notch at the lower end of the locking block. By rotating the grommet screw, the position of the positioning steel ball can be adjusted, thereby adjusting the locking strength between closure A and closure B. The three notches on the wavy locking block can simultaneously engage with three positioning steel balls, evenly distributing the load to multiple contact points, significantly reducing stress concentration on a single positioning steel ball, avoiding localized deformation or wear, and improving the service life of the device.

[0007] In a preferred embodiment, the mounting holes are evenly distributed along the tilt angle of the closure A, resulting in a more uniform distribution of the load.

[0008] In a preferred embodiment, a slider is slidably connected to the top of the closure device B, and a limit spring is fixedly connected to the rear end of the slider. The limit spring is fixedly connected to the top side wall of the closure device B. By setting the limit spring, the pulley inside the hanging rail can be limited to prevent the pulley from falling off.

[0009] In a preferred embodiment, a cover plate is fitted on the top of the closure B to prevent dust from entering the top of the closure B and affecting the limit spring.

[0010] In a preferred embodiment, a connecting rod is fixedly connected to the lower end of the slider, and a blocking point is protruding at the top of the closure A, which can cause the closure B to retract after the slider contacts the blocking point. At this time, the hanging rail connecting groove between the closure A and the closure B is in a connected state and can be connected with the hanging rail path.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] 1. This utility model allows for adjustment of the position of the positioning steel ball by rotating the nut screw, thereby adjusting the clamping strength between the closure A and the closure B. The three notches on the wavy clamping block can simultaneously engage with the three positioning steel balls, evenly distributing the load to multiple contact points. This significantly reduces stress concentration in a single positioning steel ball, preventing localized deformation or wear and improving the service life of the device. Attached Figure Description

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

[0014] Figure 2 A schematic diagram of the cross-sectional structure of a PD gate connection structure provided by this utility model after connection;

[0015] Figure 3 A schematic diagram of the cross-sectional structure of a PD gate connection structure provided by this utility model after connection;

[0016] Figure 4 A schematic diagram of the separated cross-sectional structure of a PD gate connection structure provided by this utility model;

[0017] Figure 5 A cross-sectional view of the closure device A of the PD door connection structure provided by this utility model.

[0018] Legend:

[0019] 1. Closer A; 2. Closer B; 3. Cover plate; 4. Positioning steel ball; 5. Locking spring; 6. Measuring screw; 7. Slider; 8. Limit spring; 9. Blocking point; 10. Mounting hole; 11. Connecting groove; 12. Locking block; 13. Connecting rod; 14. Hanging rail connecting groove. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-5This utility model provides a technical solution: a PD door connection structure, including a symmetrically designed closure A1 and a closure B2. Both closures A1 and B2 have a hanging rail connecting groove 14. The lower end of closure A1 has a mating groove 11. A locking block 12 is fixedly connected inside closure B2, with its lower end wavy. Closure A1 has three mounting holes 10 on both sides of the mating groove 11, each with a threaded grommets 6. A locking spring 5 is fixedly connected to the end of the grommets 6, and a positioning steel ball 4 is fixedly connected to the front end of the locking spring 5. The positioning steel ball 4 matches the wavy notch at the lower end of the locking block 12. The position of the positioning steel ball 4 can be adjusted by rotating the grommets 6, thereby adjusting the clamping strength between closures A1 and B2. The three notches on the wavy locking block 12 can simultaneously engage with three positioning steel balls 4, evenly distributing the load to multiple contact points, significantly reducing stress concentration on a single positioning steel ball 4, avoiding localized deformation or wear, and improving the service life of the device.

[0022] like Figure 1-5 As shown, the mounting holes 10 are evenly distributed along the tilt angle of the closure A1, making the force load distribution more uniform.

[0023] like Figure 1-5 As shown, a slider 7 is slidably connected to the top of the closure device B2, and a limit spring 8 is fixedly connected to the rear end of the slider 7. The limit spring 8 is fixedly connected to the top side wall of the closure device B2. By setting the limit spring 8, the pulley inside the hanging rail can be limited to prevent the pulley from falling off.

[0024] like Figure 1-5 As shown, a cover plate 3 is fitted on the top of the closure device B2 to prevent dust from entering the top of the closure device B2 and affecting the limit spring 8.

[0025] like Figure 1-5 As shown, a connecting rod 13 is fixedly connected to the lower end of the slider 7, and a blocking point 9 is protruding at the top of the closure A1. When the closure A1 and the closure B2 are closed, the slider 7 will contact the blocking point 9, causing the closure B2 to retract. At this time, the hanging rail connecting groove 14 between the closure A1 and the closure B2 is in a connected state and can be connected with the hanging rail path.

[0026] Working principle: When connecting the closure A1 and the closure B2, the locking block 12 will be squeezed into the docking groove 11 and squeezed with multiple positioning steel balls 4 on both sides. The wave-shaped design of the locking block 12 can reduce damage caused by friction. After the locking block 12 is fully inserted, the three notches on the wave-shaped locking block 12 can cooperate with the three positioning steel balls 4 at the same time, so as to evenly distribute the load to multiple contact points, significantly reduce the stress concentration of a single positioning steel ball 4, avoid local deformation or wear, and improve the service life of the device.

[0027] 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 PD gate connection structure, characterized in that, The device includes a symmetrically designed closure A (1) and a closure B (2). Both closure A (1) and closure B (2) have a hanging rail connecting groove (14). The lower end of closure A (1) has a docking groove (11). The closure B (2) has a locking block (12) fixedly connected inside. The lower end of the locking block (12) is wavy. The closure A (1) has three mounting holes (10) on both sides of the docking groove (11). Each mounting hole (10) is threaded with a grommet screw (6). The end of the grommet screw (6) is fixedly connected with a locking spring (5). The front end of the locking spring (5) is fixedly connected with a positioning steel ball (4). The positioning steel ball (4) is adapted to the wavy notch at the lower end of the locking block (12).

2. The PD gate connection structure according to claim 1, characterized in that: The mounting holes (10) are evenly distributed along the tilt angle direction of the closure A (1).

3. The PD gate connection structure according to claim 1, characterized in that: The top of the closure device B (2) is slidably connected to a slider (7), and the rear end of the slider (7) is fixedly connected to a limit spring (8), which is fixedly connected to the top side wall of the closure device B (2).

4. The PD gate connection structure according to claim 3, characterized in that: The top of the closure B(2) is fitted with a cover plate (3).

5. A PD gate connection structure according to claim 3, characterized in that: The lower end of the slider (7) is fixedly connected to a connecting rod (13), and the top of the closure A (1) has a protruding blocking point (9).

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