Invisible door closer force-adjustable door stop mechanism

By designing an adjustable door closer mechanism, the problems of poor versatility and high noise of traditional invisible door closers have been solved. This enables door-stopping operations that can adapt to doors of different weights, while reducing noise and improving stability and comfort.

CN224107121UActive Publication Date: 2026-04-10OUBAO SECURITY TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
OUBAO SECURITY TECH
Filing Date
2025-04-18
Publication Date
2026-04-10

AI Technical Summary

Technical Problem

Traditional concealed door closers have a fixed resistance force, which means that different door closers with different resistance forces need to be matched with different door closers for different weights. This results in poor versatility, high cost, and problems such as high noise and poor stability.

Method used

An adjustable force door-stopping mechanism for an invisible door closer was designed. Through a combination of guide blocks, guide grooves, sliders, springs, and locking components, the door-stopping force can be adjusted. The stop and locking components are made of high-polymer plastic to reduce noise.

Benefits of technology

It enables door stopping operations to adapt to doors of different weights, improving versatility, reducing noise during door stopping, and enhancing stability and comfort.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224107121U_ABST
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Abstract

The utility model discloses a force-adjustable door stopping mechanism of an invisible door closer, which comprises a guide block, a guide groove is arranged on the guide block, a door opening position limiting block is arranged on the guide groove, a set screw is in threaded connection with the door opening position limiting block, and an elastic sheet is arranged at the bottom of the door opening position limiting block. One end of the elastic piece is fixed to the side portion of the door opening position limiting block, a sliding block is connected into the guide groove in a sliding mode, a blocking piece is installed on the sliding block, a clamping piece is fixed to the top face of the other end of the elastic piece, and the elastic piece deforms under stress and is clamped at the blocking piece through the clamping piece. A cushion block placed on the bottom face of the guide groove is arranged on the bottom face of the elastic piece and fastened to the elastic piece through a fastener. The door stop device is ingenious and reasonable in structural design, capable of adjusting the force and angle of the door stop position and worthy of application and popularization.
Need to check novelty before this filing date? Find Prior Art

Description

TECHNICAL FIELD

[0001] The utility model relates to a door closer field especially to a invisible door closer adjustable force degree door stopping mechanism. BACKGROUND

[0002] The invisible door closer is a device that is not too conspicuous after installation and can relatively concealedly realize the automatic closing function of the door; when the door is opened, it needs to be stopped at a certain position, and when the door is closed, the door is moved again to make the door separate from the door stopper, so as to utilize the reset force of the invisible door closer to close the door again, however, the door stopper on the traditional invisible door closer has fixed stopping resistance, thereby causing that the doors of different weights need to match the door stoppers of different stopping resistance, which causes the problems of poor universality and high practical cost.

[0003] The utility model discloses CN 217681206 U discloses a door stopping position adjustable door closer, the door closer includes main part and support, the first connecting rod is hinged on the main part, the second connecting rod is hinged on the support, the plug rod is arranged on the first connecting rod end, the second connecting rod end is provided with the slot for the plug rod insertion and rotation, the second connecting rod is provided with a plurality of sliding grooves along the length direction of the plug rod, a plurality of sliding grooves are evenly distributed along the circumference of the second connecting rod, the sliding plate slides in the sliding groove, the limiting slot is opened on the sliding plate, the limiting block slides in the limiting slot, the limiting block is used for resisting the side wall of the first connecting rod away from the second connecting rod, the first spring is arranged between the sliding plate side wall and the sliding groove inner wall, and the first spring stretches and contracts along the extension direction of the limiting slot. The door stopper structure on the door closer is complex, the cost is high, the noise of door stopping collision is big, and the stability is poor. UTILITY MODEL CONTENTS

[0004] The utility model solves the above-mentioned prior art defects, provides a invisible door closer adjustable force degree door stopping mechanism of adjustable door stopping force, meets the demand of stopping the door of different weights.

[0005] The utility model discloses a kind of invisible door closer adjustable force degree stop door mechanism, including guide block, guide groove is opened in guide block, door opening position limit block is equipped in guide groove, door opening position limit block is threadedly connected with set screw on it, the bottom of door opening position limit block is equipped with spring piece, one end of spring piece is fixed in the side of door opening position limit block, sliding block is slidably connected in guide groove, stop piece is installed on sliding block, the other end of spring piece is fixed with the clamping piece of spring piece stress deformation clamped in stop piece, spring piece is opened with the adjusting position guide opening of being set along spring piece length direction, the bottom surface of spring piece is equipped with pad, pad is fastened at spring piece by fastener.The effect of guide block, guide groove, sliding block here is that guide block can slide in guide groove, so that invisible door closer can be completed by single swing arm;The effect of door opening position limit block, set screw here is that the position of door opening position limit block can be controlled by moving, and the angle position of door opening stop can be controlled;The effect of spring piece, clamping piece, stop piece here is that when clamping piece touches stop piece, spring piece is stressed and bent, so that clamping piece is clamped in stop piece, and door stopping effect is achieved;The effect of adjusting position guide opening, pad, fastener here is that the distance between outer end surface of spring piece and outer end surface of pad can be adjusted, so that the elastic force generated when stop piece is stressed and pressed down can be different, and the size of door stopping force can be controlled, that is, the door stopping operation of door with different weight can be adapted, and the versatility is stronger.

[0006] Further improvement, stop piece is round rod rotatably connected on sliding block.The effect of stop piece being round rod rotatably connected on sliding block here is that when clamping piece touches stop piece, round rod is rotated, so that buffering effect is achieved, and the noise generated when door is stopped can be greatly reduced.

[0007] Further improvement, clamping piece is wedge-shaped block, and the left and right surfaces of clamping piece are both inclined surface, and the two inclined surfaces form obtuse angle.The effect of wedge-shaped block here is that stop piece is facilitated to be pushed, so that noise is reduced, and the inclined surface of clamping piece also facilitates clamping piece to be pulled out from stop piece when door is closed.

[0008] Further improvement, stop piece and clamping piece are made of high polymer plastic material.The effect of stop piece and clamping piece being made of high polymer plastic material here is that the noise generated when door is stopped can be further reduced, and almost no noise is generated by collision.

[0009] The utility model discloses the beneficial effect is:

[0010] 1).Through door opening position limit block, set screw, the angle position of door opening stop can be controlled;

[0011] 2).Through spring piece, clamping piece, stop piece, when clamping piece touches stop piece, spring piece is stressed and bent, so that clamping piece is clamped in stop piece, and door stopping effect is achieved

[0012] 3). By adjusting the position of the guide opening, pad, fastener can adjust the distance between the outer end surface of the elastic sheet and the outer end surface of the pad, so that the elastic force generated when the stop piece is pressed under force will be different, so that the size of the door stopping force can be controlled, that is, it can adapt to different weight doors for door stopping operation, and the versatility is stronger. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a perspective view of the utility model Figure One ;

[0014] Figure 2 is a perspective view of the utility model Figure Two ;

[0015] Figure 3 is a perspective view of the utility model in the elastic sheet area;

[0016] Figure 4 is a sectional perspective view of the utility model in the elastic sheet area;

[0017] Figure 5 is a schematic view of the utility model in the elastic sheet area.

[0018] The drawing reference guide block 1, guide groove 1-1, open door position limiting block 2, tight screw 3, elastic sheet 4, adjust the position of the guide opening 4-1, pad 5, sliding block 6, stop piece 7, clamp 8, inclined surface 8-1, swing arm 9. DETAILED DESCRIPTION

[0019] The utility model will be further described below in conjunction with the drawings:

[0020] Referring to the drawings: the adjustable force degree door stop mechanism of this invisible door closer, including guide block 1, be provided with guide groove 1-1 on guide block 1, be provided with open door position limiting block 2 on guide groove 1-1, be provided with tight screw 3 by screwing on open door position limiting block 2, be provided with elastic sheet 4 on the bottom of open door position limiting block 2, one end of elastic sheet 4 is fixed in the side portion of open door position limiting block 2, be provided with sliding block 6 in guide groove 1-1, install stop piece 7 on sliding block 6, the other end top surface of elastic sheet 4 is fixed with the clamp 8 of elastic sheet 4 force deformation and clamping in stop piece 7, be provided with the adjust the position of the guide opening 4-1 of setting along the length direction of elastic sheet 4 on elastic sheet 4, the bottom surface of elastic sheet 4 is provided with pad 5 and is placed on the bottom surface of guide groove 1-1, pad 5 is fastened at elastic sheet 4 by fastener.

[0021] Stop piece 7 is a round rod rotatably connected to sliding block 6.

[0022] Clamp 8 is a wedge-shaped block, the left and right faces of clamp 8 are both inclined surfaces 8-1, and the two inclined surfaces 8-1 form an obtuse angle.

[0023] The utility model discloses a working principle: according to the door of different weight, can be adjusted the interval between the outer end surface of elastic sheet 4 and the outer end surface of pad 5 through the tool screwing fastener, thereby can control the down pressure elasticity of elastic sheet 4 when card piece 8 touches to stop piece 7, thereby can adapt to the door of different weight and carry out the door stopping operation, after adjusting the interval between the outer end surface of elastic sheet 4 and the outer end surface of pad 5, utilize the tool screwing fastener, subsequently, utilize the tool screwing fastening screw 3, thereby adjust the position of door opening position limit block 2, and can control the door opening angle in furtherance, after controlling the door opening angle, utilize the tool screwing door opening position limit block 2, when opening the door, swing arm 9 will drive slider 6 to move towards the direction of door opening position limit block 2, thereby the stop piece 7 on slider 6 will collide with card piece 8 on elastic sheet 4, thereby elastic sheet 4 is pressed and moves down, and makes stop piece 7 pass through card piece 8 and pass through the reset force of elastic sheet 4 and makes card piece 8 hold stop piece 7, thereby completes the door stopping operation, the utility model discloses clever, reasonable structure design, because stop piece 7 adopts the round bar of rotary connection on slider 6, and stop piece 7 and card piece 8 all adopt the high molecule plastics material quality and make, so when stop piece 7 collides with card piece 8, not only can adapt to the door stopping force required by different door weight, and the noise produced by collision is extremely low, and the comfort degree of the door stopping after opening and closing is very good, is worth popularization and application.

[0024] Although the utility model has been illustrated and described through the reference preferred embodiment, but, the professional ordinary skilled person should understand, can make various various changes on form and details within the scope of claims.

Claims

1. A door stop mechanism with adjustable force for invisible door closer, comprising a guide block (1) with a guide slot (1-1) on it, characterized in that: The door opening position limiting block (2) is provided with a tight screw (3) which is threadedly connected to the door opening position limiting block (2), the bottom of the door opening position limiting block (2) is provided with an elastic sheet (4), one end of the elastic sheet (4) is fixed to the side of the door opening position limiting block (2), the guiding groove (1-1) is slidably connected with a sliding block (6), the sliding block (6) is provided with a stop piece (7), the other end of the elastic sheet (4) is fixed with a clamping piece (8), the elastic sheet (4) is provided with a position adjusting guide opening (4-1) which is arranged along the length direction of the elastic sheet (4), the bottom surface of the elastic sheet (4) is provided with a pad (5) which is placed on the bottom surface of the guiding groove (1-1), and the pad (5) is fastened to the elastic sheet (4) by fasteners.

2. A concealed door closer adjustable force door stopping mechanism according to claim 1, characterized in that: The stop piece (7) is a round rod which is rotatably connected to the sliding block (6).

3. A concealed door closer adjustable force door stopping mechanism according to claim 2, characterized in that: The clamping piece (8) is a wedge-shaped block.

4. A concealed door closer adjustable force door stopping mechanism according to claim 2, characterized in that: The stop piece (7) and the clamping piece (8) are made of high polymer plastic material.

Citation Information

Patent Citations

  • Door closer with adjustable door stop position

    CN217681206U