Buffer limiter for vertical hinged door
The door limiter converts torque to linear force using flexible buffers and limit blocks, addressing collision issues and noise, while offering adjustable stopping and versatile fitting.
Patent Information
- Application Number
- CN202422145103.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-03
AI Technical Summary
Existing door stoppers are prone to collision with walls or obstacles when the door is opened, resulting in damage and noise, and poor door opening angle fixation.
A buffer limiter for swing doors is designed to convert torque into linear thrust, and the flexible buffer block and limit block absorb thrust, combined with the shrapnel structure to realize the adjustable door stop function, adapting to different hardware spaces.
Effectively reduces collision between doors and walls, reduces noise, realizes adjustable door opening angle limits, and adapts to different door specifications and usage environments.
Smart Images
Figure CN223104376U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of construction, and particularly to a door limiter. Background Art
[0002] When the door is in the open state, a limiter is required to limit the opening angle of the door. The limiter of the prior art includes a sliding structure respectively fixed in the frame and a pull rod connected to the slider of the sliding mechanism. The pull rod is connected to the door. In this way, through the linkage action of the pull rod, the position of the slider is restricted to achieve the fixation of the opening angle of the door. On the other hand, during the opening process of the door, the collision between the door and the wall or other obstacles will inevitably occur, damaging the door and the wall; it is also possible to damage the hinge due to the excessive opening angle of the door. In addition, the sound generated by the collision also has a greater impact on people's lives. Content of the Utility Model
[0003] To solve the above technical problems, the purpose of the utility model is to provide a structure that converts the torque formed with the door hinge as the axis into a linear thrust, and uses a flexible buffer block and a limit block to absorb the thrust and limit the door. The specific technical solutions are as follows:
[0004] A buffer limiter for a side-hung door, the double-groove chute is installed in the upper door frame of the side-hung door through a chute fixing block. The adjusting block and the elastic sheet are overlapped and placed in the upper groove of the double-groove chute, and are fixed tightly by a setscrew. The elastic sheet limit block is riveted on the elastic sheet; the slider connecting piece is rotatably connected to the slider and is arranged in the lower groove of the double-groove chute; the flexible buffer block and the limit block are arranged on one side of the double-groove chute far from the elastic sheet limit block, and the limit block is fixed tightly in the lower groove of the double-groove chute by a setscrew, and the limit block is embedded in the lower groove; the adjusting rotating shaft is installed on the rotating shaft seat through an adjusting snap ring, the rotating shaft seat is connected to the rotating shaft seat fixing plate by screws, and the rotating shaft seat fixing plate is installed on the upper side of the door leaf; one side of the pull rod is connected to the slider connecting piece, and the other side is connected to the adjusting rotating shaft.
[0005] The cross section of the elastic sheet limit block is an obtuse triangle.
[0006] There are two groups of snap ring grooves on the adjusting rotating shaft, forming several groups of adjusting pitches.
[0007] One side of the pull rod is fixed to the slider connecting piece by a thread, and the other side is connected to the adjusting rotating shaft by a rotating shaft screw.
[0008] The flexible buffer blocks are multiple, and the elasticity of each flexible buffer block is different, and they are all embedded in the double-groove chute and abutted against the limit block.
[0009] The advantages of the present utility model are as follows: the torque for opening the door is converted into a linear thrust, which is absorbed by the flexible buffer block, and the limit block is used for limiting; at the same time, the stopper realizes the adjustable door stopping function by using structures such as elastic pieces; in addition, the combination of the adjusting rotating shaft, the adjusting snap ring and the rotating shaft seat enables the stopper to have a certain applicable range of hardware space. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 is a schematic structural diagram of the present utility model;
[0011] Figure 2 is a schematic structural diagram of the present utility model from another angle;
[0012] Figure 3 is a schematic structural diagram of the side of the door frame of the present utility model;
[0013] Figure 4 is a schematic structural diagram of the side of the door leaf of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0014] The present utility model will be specifically described below with reference to the drawings. As shown in the figure, the double-groove chute 11 is installed in the upper door frame of the casement door through the chute fixing block 1. The adjusting block 2 and the elastic piece 3 are overlapped and placed in the upper groove of the double-groove chute 11, and are fixed by tightening with a set screw. The elastic piece limit block 4 is riveted on the elastic piece 3; the slider connecting piece 6 is rotatably connected to the slider 5 and is arranged in the lower groove of the double-groove chute 11; the flexible buffer block 7 and the limit block 12 are arranged on one side of the lower groove of the double-groove chute 11 far from the elastic piece limit block 4. The limit block 12 is fixed in the lower groove of the double-groove chute 11 by tightening with a set screw, and the limit block 12 is embedded in the lower groove; the adjusting rotating shaft 9 is installed on the rotating shaft seat 15 through the adjusting snap ring 8. The rotating shaft seat 15 is connected to the rotating shaft seat fixing plate 14 by screws, and the rotating shaft seat fixing plate 14 is installed on the upper side of the door leaf; one side of the pull rod 10 is connected to the slider connecting piece 6, and the other side is connected to the adjusting rotating shaft 9.
[0015] Preferably, the cross section of the elastic piece limit block 4 is an obtuse triangle;
[0016] The slider 5 can slide to the right in the double-groove chute 11 under the force brought by opening the door. When the slider 5 touches the smaller acute-angle surface 41 of the elastic piece limit block 4, it can gradually squeeze the elastic piece limit block and cause the elastic piece 3 to deform. Finally, the slider 5 crosses the elastic piece limit block 4 and contacts the flexible buffer block 7. The elastic piece limit block 4 is driven to reset by the elastic force of the elastic piece 3 itself to restore its shape, and the flexible buffer block 7 is limited by the limit block 12; the larger acute-angle surface 42 of the limit block after reset first abuts against the slider 5. Therefore, it has a certain hindering effect on the closing of the door, that is, it limits the closing of the door. Unless the external force is large and the slider 5 crosses the limit block, this can ensure that the door is always in the open state under a force less than a certain value. By changing the relative position of the adjusting block 2 and the elastic piece 3, the elastic force arm is changed, and thus the door stopping force is adjusted.
[0017] There are two groups of snap ring grooves on the adjusting rotating shaft 8, forming several groups of adjusting pitch. One side of the pull rod 10 is fixed to the slider connecting piece 6 by threads, and the other side is connected to the adjusting rotating shaft 9 by a rotating shaft screw 13; depending on the rotating shaft seat, the double groove 15 is arranged in the double groove, and the height of the adjusting rotating shaft arranged in the double groove 9 can be adjusted within a certain range to adapt to the hardware space of different sizes.
[0018] To adapt to the changes in the specifications of different doors and the usage environment, there are multiple flexible buffer blocks 7, and the elasticity of each flexible buffer block 7 is different. All of them are embedded in the lower groove of the double groove chute 11 and abutted against the limiting block 12.
Claims
1. A buffer limiter for a flat door, characterized in that: The double-groove sliding chute is installed inside the upper door frame of the French door through the sliding chute fixing block. The adjusting block and the elastic piece are overlapped and placed in the upper groove of the double-groove sliding chute, and are fixed tightly by the setscrew. The elastic piece limiting block is riveted on the elastic piece; the slider connecting piece is rotatably connected with the slider and is arranged in the lower groove of the double-groove sliding chute; the flexible buffer block and the limiting block are arranged on one side of the double-groove sliding chute far away from the elastic piece limiting block, and the limiting block is fixed tightly in the lower groove of the double-groove sliding chute by the setscrew, and the limiting block is embedded in the lower groove; the adjusting rotating shaft is installed on the rotating shaft seat through the adjusting snap ring, the rotating shaft seat is connected with the rotating shaft seat fixing plate by screws, and the rotating shaft seat fixing plate is installed on the upper side of the door leaf; one side of the pull rod is connected with the slider connecting piece, and the other side is connected with the adjusting rotating shaft.
2. The buffer limiter for a side hung door according to claim 1, wherein: The cross-section of the elastic piece limiting block is an obtuse triangle.
3. The buffer limiter for a side-hung door according to claim 1, characterized in that: There are two groups of snap ring grooves on the adjusting rotating shaft.
4. The buffer limiter for a flat door according to claim 1, characterized in that: One side of the pull rod is fixed to the slider connecting piece by threads, and the other side is connected to the adjusting rotating shaft by the rotating shaft screw.
5. The buffer limiter for the French door according to claim 1, wherein: There are multiple flexible buffer blocks, and the elasticity of each flexible buffer block is different. Each is embedded in the double-groove sliding chute and abuts against the limiting block.