Door and window center column locking structure and door and window

By combining trapezoidal blocks and spring structures, the problem of displacement of the central column during installation is solved, achieving stability and rapid installation of the central column and door/window frame.

CN224549963UActive Publication Date: 2026-07-24CHENGZHI DAXING (SHANDONG) DOORS & WINDOWS TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHENGZHI DAXING (SHANDONG) DOORS & WINDOWS TECHNOLOGY CO LTD
Filing Date
2025-08-22
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

When installing the locking structure, the lack of positioning between the central post and the door/window frame makes the central post prone to displacement, affecting quick installation and stability.

Method used

It adopts a trapezoidal block and spring structure. The trapezoidal block is matched with the central column and the door and window frame through the slot, and the deformation and reset characteristics of the spring are used for positioning and fixation. The stability is enhanced by nuts and rubber strips.

Benefits of technology

It effectively prevents the central column from shifting during installation, improves the stability of the central column and the door and window frame, and facilitates quick installation and fixing.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224549963U_ABST
Patent Text Reader

Abstract

The utility model provides a door and window middle column locking structure and door and window relate to door and window technical field, the utility model discloses a locking plate one side is fixed and installed in the one side of middle column body through bolt, the both ends of locking plate are fixed and installed in the both sides of door and window border inner wall through bolt, the both sides of door and window border inner wall all are equipped with the clamping groove, the both ends of middle column body are inserted in the inner wall of two clamping groove respectively, the utility model discloses two trapezoidal blocks are set up, and before being fixed between middle column body and door and window border through locking plate, two trapezoidal blocks are adjusted, so that one side of two trapezoidal blocks all abuts with the one side of trapezoidal block, then two trapezoidal blocks can position middle column body, is favorable to prevent the displacement of middle column body when installing locking plate, and simultaneously two trapezoidal blocks can still carry out the auxiliary fixing between middle column body and door and window border after locking plate installation completion.
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Description

Technical Field

[0001] This utility model relates to the field of door and window technology, and in particular to a door and window central pillar locking structure and door and window. Background Technology

[0002] The locking structure for door and window center posts is a special structure used to firmly connect the center posts of doors and windows to the door and window frames or other frame components, and to enable quick installation and disassembly or position fixation. Its core function is to ensure that the center posts do not loosen or shift during the use of doors and windows, while also taking into account the ease of installation.

[0003] When installing the locking device, the central column needs to be placed inside the door and window frame so that both ends of the central column abut against the designated positions on both sides of the frame. Then, the locking structure is installed with bolts to achieve the effect of fixing and locking the central column. However, when installing the locking structure, the central column is prone to displacement because there is no positioning between it and the door and window frame. This makes it difficult to install the central column quickly and may also have an adverse effect on the stability of the central column. Summary of the Invention

[0004] This utility model addresses the problem that during the installation of locking structures, the central column is prone to displacement due to the lack of positioning between it and the door / window frame, which hinders the quick installation of the central column and may also negatively affect its stability. Therefore, this invention provides a door / window central column locking structure and a door / window.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a locking structure for a door and window central column, comprising a locking plate, one side of which is fixedly installed on one side of the central column body by bolts, and both ends of which are respectively fixedly installed on both sides of the inner wall of the door and window frame by bolts. Slots are provided on both sides of the inner wall of the door and window frame, and both ends of the central column body are respectively inserted into the inner walls of the two slots. Auxiliary devices are provided on both sides of the locking plate. The auxiliary devices position the central column body and the door and window frame by setting two trapezoidal blocks on the inner wall of the auxiliary grooves to abut against one side of the central column body.

[0006] The effect achieved by the above-mentioned components is as follows: by setting two trapezoidal blocks, before fixing the central column body to the door and window frame with the locking plate, the two trapezoidal blocks are adjusted so that one side of each trapezoidal block abuts against the other side of the locking plate. This allows the two trapezoidal blocks to position the central column body, which helps prevent the central column body from shifting when the locking plate is installed. At the same time, after the locking plate is installed, the two trapezoidal blocks can also provide auxiliary fixation between the central column body and the door and window frame, thereby improving the stability of the central column body.

[0007] Preferably, the auxiliary device includes four auxiliary slots, which are respectively opened on both sides of the inner wall of the slot. Trapezoidal blocks are slidably installed on the inner wall of the auxiliary slots. The sides of two trapezoidal blocks that are close to each other are inclined surfaces, and springs are fixedly installed on the sides of two trapezoidal blocks that are far apart. One end of the spring is fixedly installed on one side of the inner wall of the auxiliary slot.

[0008] The effect achieved by the above components is as follows: Before installing the locking plate, the two ends of the central column body are first pressed against the inclined surfaces of the two trapezoidal blocks. The central column body will apply a horizontal component force to the two trapezoidal blocks, causing the two trapezoidal blocks to move away from each other and gradually enter the inner wall of the auxiliary groove. The trapezoidal blocks will compress the spring, causing the spring to deform until both of the central column body parts are separated from the abutment of the trapezoidal blocks and enter the inner wall of the two slots respectively. Then the spring loses the external force compression and will drive the trapezoidal blocks to reset, so that one side of the two trapezoidal blocks abuts against one side of the central column body. Thus, the two pairs of trapezoidal blocks can position the central column body and the door and window frame, which is convenient for subsequent installation of the locking plate and can also play an auxiliary reinforcement role between the central column body and the door and window frame.

[0009] Preferably, the spring has a telescopic rod inside, and the two ends of the telescopic rod are respectively fixedly installed on one side of the trapezoidal block and one side of the inner wall of the auxiliary groove.

[0010] The effect achieved by the above components is as follows: by setting up a telescopic rod, which is essentially a round rod that can slide on the inner wall of the cylinder, it can guide the spring during the deformation process, which helps to prevent the spring from bending during the deformation process.

[0011] Preferably, a threaded pin is fixedly installed on one side of the trapezoidal block, one end of the threaded pin passes through the auxiliary groove and is slidably inserted into the inner wall of the door and window frame, and a nut is threaded onto the outer surface of the threaded pin.

[0012] The effect achieved by the above components is as follows: by rotating the nut, one side of the nut presses against one side of the door and window frame until one side of the door and window frame abuts against one side of the trapezoidal block. The nut can then fix the trapezoidal block and the auxiliary groove, which helps to prevent the trapezoidal block from shifting under external force and causing the central column body to detach from the limit of the two trapezoidal blocks, making the fixation between the central column body and the door and window frame more stable.

[0013] Preferably, rubber strips are symmetrically installed on both sides of the door and window frame, and the nuts are located on one side of the two rubber strips.

[0014] The effect achieved by the above components is that by setting rubber strips, one side of the door and window frame can be replaced by the other side of the nut, and the friction between the nut and the door and window frame can be increased, making the nut more firmly fixed to the trapezoidal block.

[0015] Preferably, a circular block is fixedly installed at one end of the bolt, and the outer diameter of the circular block is larger than the outer diameter of the threaded pin.

[0016] The effect achieved by the above-mentioned components is that by setting up a circular block, one end of the threaded pin can be blocked, which helps to prevent the nut from coming off the threaded pin due to misoperation.

[0017] Preferably, positioning plates are symmetrically installed on one side of the central column body, and the two sides of the locking plate abut against one side of the two positioning plates respectively.

[0018] The effect achieved by the above components is that by setting two positioning plates, the locking plate can be quickly positioned, and the locking plate can be quickly installed.

[0019] Preferably, the door and window include a door and window frame, with slots provided on both sides of the inner wall of the door and window frame, the central column body being inserted into the inner wall of the two slots, the central column body being fixedly installed on one side of the central column body by bolts, and both ends of the central column body being fixedly installed on the inner wall of the two slots by bolts respectively, and an inner frame being rotatably installed on one side of the inner wall of the door and window frame by a hinge.

[0020] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this invention, by setting two trapezoidal blocks, before fixing the central column body to the door and window frame with the locking plate, the two trapezoidal blocks are adjusted so that one side of each trapezoidal block abuts against the other side of the locking plate. This allows the two trapezoidal blocks to position the central column body, which helps prevent the central column body from shifting when the locking plate is installed. At the same time, after the locking plate is installed, the two trapezoidal blocks can also provide auxiliary fixation between the central column body and the door and window frame, thereby improving the stability of the central column body. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the main body of this utility model; Figure 2 This is a three-dimensional structural diagram of the auxiliary device of this utility model; Figure 3 This utility model Figure 2 A magnified structural diagram at point A; Figure 4 This is a cross-sectional view of the frame of this utility model; Figure 5 This utility model Figure 4 A magnified structural diagram at point B.

[0022] Legend: 1. Door and window frame; 2. Central column body; 3. Slot; 4. Locking plate; 5. Inner frame; 6. Auxiliary device; 61. Auxiliary groove; 62. Trapezoidal block; 63. Spring; 64. Telescopic rod; 65. Threaded pin; 66. Nut; 67. Rubber strip; 68. Round block; 69. Positioning plate. Detailed Implementation

[0023] Example 1, referring to Figures 1-3 As shown, this embodiment discloses a locking structure for a door and window central pillar, including a locking plate 4. One side of the locking plate 4 is fixedly installed on one side of the central pillar body 2 by bolts. The two ends of the locking plate 4 are respectively fixedly installed on both sides of the inner wall of the door and window frame 1 by bolts. Both sides of the inner wall of the door and window frame 1 are provided with slots 3. The two ends of the central pillar body 2 are respectively inserted into the inner walls of the two slots 3. Auxiliary devices 6 are provided on both sides of the locking plate 4. The auxiliary devices 6 abut against one side of the central pillar body 2 by setting two trapezoidal blocks 62 on the inner wall of the auxiliary groove 61. Positioning is achieved by setting two trapezoidal blocks 62. Before fixing the central column body 2 to the door and window frame 1 with the locking plate 4, the two trapezoidal blocks 62 are adjusted so that one side of each trapezoidal block 62 abuts against the other side of the locking plate 4. This allows the two trapezoidal blocks 62 to position the central column body 2, which helps prevent the central column body 2 from shifting when the locking plate 4 is installed. At the same time, after the locking plate 4 is installed, the two trapezoidal blocks 62 can also provide auxiliary fixation between the central column body 2 and the door and window frame 1, thereby improving the stability of the central column body 2.

[0024] Reference Figures 2-5As shown, the auxiliary device 6 includes four auxiliary slots 61, which are respectively opened on both sides of the inner wall of the slot 3. Trapezoidal blocks 62 are slidably installed on the inner wall of the auxiliary slots 61. The sides of two trapezoidal blocks 62 that are close to each other are inclined surfaces, and springs 63 are fixedly installed on the sides of two trapezoidal blocks 62 that are far apart. One end of the spring 63 is fixedly installed on one side of the inner wall of the auxiliary slot 61. Before installing the locking plate 4, the two ends of the central column body 2 are first pressed against the inclined surfaces of the two trapezoidal blocks 62. The central column body 2 will apply a horizontal component force to the two trapezoidal blocks 62, causing the two trapezoidal blocks 62 to move away from each other and gradually enter the inner wall of the auxiliary slot 61. The trapezoidal blocks 62 will compress the springs 63, causing the springs 63 to deform until both ends of the central column body 2 are disengaged from the trapezoidal blocks 62. When the spring 63 is released from external pressure, it will cause the trapezoidal block 62 to reset, so that one side of the two trapezoidal blocks 62 abuts against one side of the central column body 2. The two pairs of trapezoidal blocks 62 can position the central column body 2 and the door and window frame 1, which is convenient for subsequent installation of the locking plate 4 and can also play an auxiliary reinforcement role between the central column body 2 and the door and window frame 1. The spring 63 is equipped with a telescopic rod 64 inside. The two ends of the telescopic rod 64 are fixedly installed on one side of the trapezoidal block 62 and one side of the inner wall of the auxiliary groove 61, respectively. By setting the telescopic rod 64, which is essentially a round rod that can slide on the inner wall of the cylinder, it can guide the spring 63 during the deformation process and help prevent the spring 63 from bending during the deformation process.

[0025] Reference Figures 2-5 As shown, a threaded pin 65 is fixedly installed on one side of the trapezoidal block 62. One end of the threaded pin 65 passes through the auxiliary groove 61 and is slidably inserted into the inner wall of the door and window frame 1. A nut 66 is threadedly connected to the outer surface of the threaded pin 65. Rotating the nut 66 causes one side of the nut 66 to press against one side of the door and window frame 1 until one side of the door and window frame 1 abuts against one side of the trapezoidal block 62. The nut 66 can then fix the trapezoidal block 62 and the auxiliary groove 61, which helps to prevent the trapezoidal block 62 from shifting under the action of external force, causing the central column body 2 to detach from the limit of the two trapezoidal blocks 62, making the fixation between the central column body 2 and the door and window frame 1 more stable. Rubber strips 67 are symmetrically installed on both sides of the door and window frame 1. The nut 66 is set on one side of the two rubber strips 67. By setting the rubber strips 67, one side of the door and window frame 1 can be replaced by the other side of the nut 66, and the friction between the nut 66 and the door and window frame 1 can be increased, making the fixation of the nut 66 on the trapezoidal block 62 more stable.

[0026] Reference Figures 2-5As shown, a round block 68 is fixedly installed at one end of the bolt. The outer diameter of the round block 68 is larger than the outer diameter of the threaded pin 65. By setting the round block 68, one end of the threaded pin 65 can be blocked, which helps to prevent the nut 66 from dislodging from the threaded pin 65 due to misoperation. Positioning plates 69 are symmetrically installed on one side of the central column body 2. The two sides of the locking plate 4 abut against one side of the two positioning plates 69 respectively. By setting the two positioning plates 69, the locking plate 4 can be quickly positioned, and it is also convenient to quickly install the locking plate 4.

[0027] Reference Figure 1 and Figure 2 As shown, the door and window include a door and window frame 1. The inner walls of the door and window frame 1 are provided with slots 3 on both sides. The central column body 2 is inserted into the inner walls of the two slots 3. The central column body 2 is fixedly installed on one side of the central column body 2 by bolts. Both ends of the central column body 2 are fixedly installed on the inner walls of the two slots 3 by bolts respectively. An inner frame 5 is installed on one side of the inner wall of the door and window frame 1 by hinge rotation.

[0028] Working principle: Before installing the locking plate 4, the two ends of the central column body 2 are first pressed against the inclined surfaces of the two trapezoidal blocks 62. The central column body 2 applies a horizontal component force to the two trapezoidal blocks 62, causing them to move away from each other and gradually enter the inner wall of the auxiliary groove 61. The trapezoidal blocks 62 compress the spring 63. Under the guidance and limitation of the telescopic rod 64, the spring 63 deforms until both ends of the central column body 2 disengage from the trapezoidal blocks 62 and enter the inner walls of the two slots 3. Then, the spring 63 loses the external pressure and drives the trapezoidal blocks 62 to reset, so that one side of the two trapezoidal blocks 62 abuts against one side of the central column body 2, thus centering the two pairs of trapezoidal blocks 62. Positioning is performed between the column body 2 and the door / window frame 1; then, the locking plate 4 is inserted between the two positioning plates 69, so that both ends of the locking plate 4 abut against one side of the inner wall of the two slots 3 respectively, and the locking plate 4 is fixed to the column body and the inner wall of the slots 3 by bolts; finally, the nut 66 is rotated so that one side of the nut 66 presses against the rubber strip 67 on one side of the door / window frame 1 until one side of the door / window frame 1 abuts against one side of the trapezoidal block 62, then the nut 66 can fix the trapezoidal block 62 and the auxiliary groove 61, which helps to prevent the trapezoidal block 62 from shifting under the action of external force and causing the central column body 2 to detach from the limit of the two trapezoidal blocks 62, making the fixation between the central column body 2 and the door / window frame 1 more stable.

Claims

1. A locking structure for the central pillar of a door or window, comprising a locking plate (4), characterized in that: One side of the locking plate (4) is fixedly installed on one side of the central column body (2) by bolts. The two ends of the locking plate (4) are respectively fixedly installed on the two sides of the inner wall of the door and window frame (1) by bolts. The two sides of the inner wall of the door and window frame (1) are provided with slots (3). The two ends of the central column body (2) are respectively inserted into the inner wall of the two slots (3). The two sides of the locking plate (4) are provided with auxiliary devices (6). The auxiliary devices (6) position the central column body (2) and the door and window frame (1) by setting two trapezoidal blocks (62) on the inner wall of the auxiliary groove (61) and abutting against one side of the central column body (2).

2. The locking structure for the central pillar of a door or window according to claim 1, characterized in that: The auxiliary device (6) includes four auxiliary slots (61), which are respectively opened on both sides of the inner wall of the slot (3). Trapezoidal blocks (62) are slidably installed on the inner wall of the auxiliary slots (61). The sides of the two trapezoidal blocks (62) that are close to each other are inclined surfaces, and the sides of the two trapezoidal blocks (62) that are far apart are fixedly installed with springs (63). One end of the spring (63) is fixedly installed on one side of the inner wall of the auxiliary slot (61).

3. The locking structure for the central pillar of a door or window according to claim 2, characterized in that: The spring (63) is provided with a telescopic rod (64) inside. The two ends of the telescopic rod (64) are respectively fixedly installed on one side of the trapezoidal block (62) and one side of the inner wall of the auxiliary groove (61).

4. The locking structure for the central pillar of a door or window according to claim 2, characterized in that: A threaded pin (65) is fixedly installed on one side of the trapezoidal block (62). One end of the threaded pin (65) passes through the auxiliary groove (61) and is slidably inserted into the inner wall of the door and window frame (1). A nut (66) is threadedly connected to the outer surface of the threaded pin (65).

5. The locking structure for the central pillar of a door or window according to claim 4, characterized in that: Rubber strips (67) are symmetrically installed on both sides of the door and window frame (1), and nuts (66) are set on one side of the two rubber strips (67).

6. The locking structure for the central pillar of a door or window according to claim 4, characterized in that: A round block (68) is fixedly installed at one end of the bolt, and the outer diameter of the round block (68) is larger than the outer diameter of the threaded pin (65).

7. The locking structure for the central pillar of a door or window according to claim 1, characterized in that: The central column body (2) is symmetrically equipped with positioning plates (69) on one side, and the two sides of the locking plate (4) abut against one side of the two positioning plates (69) respectively.

8. Doors and windows, characterized in that: The door and window central column locking structure according to any one of claims 1-7 is adopted. The door and window includes a door and window frame (1). The inner walls of the door and window frame (1) are provided with slots (3) on both sides. The central column body (2) is inserted into the inner walls of the two slots (3). The central column body (2) is fixedly installed on one side of the central column body (2) by bolts. Both ends of the central column body (2) are fixedly installed on the inner walls of the two slots (3) by bolts respectively. An inner frame (5) is installed on one side of the inner wall of the door and window frame (1) by hinge rotation.