Door closer with adjustable door opening buffer on side edge

By improving the connection mechanism and installation components of the door closer, the problems of adaptability of traditional door closers to different door types and ease of installation of hydraulic springs have been solved, achieving a stable connection and convenient maintenance.

CN224048955UActive Publication Date: 2026-03-27SHANGHAI CROWN HARDWARE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-15
Publication Date
2026-03-27

AI Technical Summary

Technical Problem

Traditional door closers are prone to connection mismatch issues during installation, especially with poor adaptability to door bodies of different thicknesses. Furthermore, the installation of hydraulic springs is inconvenient, leading to cumbersome installation and a shortened service life.

Method used

A side-adjustable door closer with a buffer opening mechanism was designed. Through improvements to the connecting mechanism and mounting components, including an adjustable-length connecting arm and threaded rod, a limit seat, and a mounting plate with a rubber ring, flexible door body adaptation and convenient hydraulic spring installation are achieved.

Benefits of technology

It achieves a stable connection between the door closer and different door types, simplifies the installation process, improves installation efficiency and maintenance convenience, and extends service life.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224048955U_ABST
Patent Text Reader

Abstract

The utility model discloses a door closer with an adjustable door opening buffer on the side edge, and relates to the technical field of door closers. The door closer comprises a door closer body, the top of the door closer body is movably connected with a rotating shaft, the top of the rotating shaft is provided with a connecting mechanism, one side of the door closer body is provided with an installation assembly, and the bottom of one side of the door closer body is provided with a hydraulic adjusting mechanism. The matching problem of connection between the door closer and different door bodies is solved through the connecting mechanism, the connecting arm is movably connected with the rotating shaft, the connecting angle can be flexibly changed, the tooth block is matched with the clamping block at the bottom of the movable plate, and when the pull rod is pulled to enable the movable plate to move upwards and the clamping block is separated from the tooth block, the length of the connecting arm can be easily adjusted. The door closer connecting mechanism is simple in structure and suitable for different door body mounting length requirements, the optimal connecting length of a light and thin indoor wooden door or a heavy industrial iron door can be found through the connecting mechanism, it is ensured that the door closer and the door body are tightly combined and stably work, and the universality of the door closer is greatly improved.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of door closer, especially relates to a side edge adjustable door opening buffer's door closer. BACKGROUND

[0002] In modern architecture, the door is as the key part of space separation and connection, and the smoothness and safety of opening and closing are very important, and the door closer is as the important device of controlling door closing action, is widely used in various places, from the indoor door of residence to the large fireproof door of commercial building, to the passage door of public facilities.

[0003] The traditional door closer design adopts the single length adjustment mode, the connecting rod design is mostly two groups, the connection may not match during installation, the normal operation of the door closer is affected, some retro style wooden doors are thick, the connecting part of the ordinary door closer is too short, and it is difficult to stably install, forcibly installing may cause uneven stress of the door closer during work, shortens the service life, the traditional door closer lacks convenience for installing the internal hydraulic spring, once the hydraulic spring fails, needs to be overhauled or replaced, often needs to disassemble multiple external components, and the operation is tedious and time-consuming.

[0004] Therefore, the utility model provides a side edge adjustable door opening buffer's door closer to solve the above problems. CONTENT OF UTILITY MODEL

[0005] The utility model discloses a kind of side edge adjustable door opening buffer's door closer, by the cooperation of connecting mechanism and installation component, solve the single length adjustment mode in prior art, the connecting rod design is mostly two groups, leading to the connection may not match during installation, while lacking the convenience of installing internal hydraulic spring.

[0006] To solve the above technical problems, the utility model is realized by the following technical solutions.

[0007] The utility model discloses a door closer of side edge adjustable door opening buffer, including door closer main part, the door closer main part top swing joint has the pivot, the pivot top is provided with the connecting mechanism, the door closer main part one side is provided with the installation component, the door closer main part one side bottom is provided with the hydraulic pressure adjusting mechanism, the connecting mechanism includes connecting arm, connecting arm one side swing joint with the pivot, connecting arm one side is provided with the casing, connecting arm top fixedly connected with the tooth block, the casing one side fixedly connected with the connecting plate, the connecting plate one side is through the pivot swing joint and has the connecting piece, the connecting piece one side fixedly connected with the threaded tube, the threaded tube one side is connected with the threaded rod with the thread, the cavity of casing is provided with the movable plate, movable plate bottom both sides all are fixedly connected with the card block of being suitable for the tooth block, movable plate top one side fixedly connected with the compression spring, movable plate top one side fixedly connected with the pull rod, the adjustable length design of connecting arm and threaded rod makes the door closer can adapt to various different size, weight and installation requirement door body, for the indoor door of narrower, can shorten the length of connecting arm and threaded rod, ensure that the connection is compact and stable, for the door of large -scale industry or special specification, can through the extension connecting arm and threaded rod, realize reliable connection, make the door closer can be installed on the door body accurately, effectively control the opening and closing of door, the flexible adaptability greatly expands the application scope of door closer, whether it is common civil building door or complex industrial building door, can realize perfect adaptation, the tooth shape design of tooth block and card block and the elastic force effect of compression spring, make connecting arm can bear greater torsion after locking angle, ensure that the connecting part does not displace in the opening and closing process of door body.

[0008] The utility model further sets up, the installation component includes the mounting disc, the mounting disc one side fixedly connected with the limit seat, the limit seat one side extends to the door closer main part inner chamber, the limit seat one side fixedly connected with the location column, the limit seat surface is equipped with the rubber ring, according to the position of location column, installs hydraulic spring to the specified position, avoids the positional deviation in the installation process, improves the accuracy and efficiency of installation greatly, the sealing effect of rubber ring can ensure that hydraulic spring runs in a good working environment, prevents the impurity from entering and influences its performance.

[0009] The utility model further sets up, the mounting disc surface both sides all are seted up with first installation hole, the first installation hole inner chamber is fixedly connected with the door closer main part through bolt, first installation hole can position the mounting disc fast, has guaranteed the stability of mounting disc installation.

[0010] The utility model further sets up, both sides of door closer main part all are fixedly connected with fixed plate, the second installation hole is established in the fixed plate surface top and bottom, and the fixed plate is fixed at both sides of door closer main part, can be firmly connected with door frame or wall through the second installation hole of top and bottom, greatly strengthen the stability of door closer installation, evenly distribute the force that door closer bears, reduce the damage risk of concentrated stress to installation part.

[0011] The utility model further sets up, the hydraulic pressure adjusting mechanism includes adjusting lever, adjusting lever one side is connected with door closer main part thread, adjusting lever one side extends to the inner chamber of door closer main part, the inner chamber of door closer main part is seted up with hydraulic flow channel, adjusting lever one side extends to the inner chamber of hydraulic flow channel, adjusting lever extends to the inner chamber of hydraulic flow channel, change the flow and flow rate of hydraulic oil, thereby accurate control door opening buffer degree, this side surface adjusting mode is easy and simple to operate, need not dismount other parts, saved adjusting time and energy, the user is convenient according to actual situation adjusts at any time.

[0012] The utility model further sets up, the surface of threaded rod is connected with threaded sleeve, one side of threaded rod is fixedly connected with connecting block, and the length of threaded rod is fixed to threaded sleeve, so that the purpose of convenient adjustment is achieved, and the connecting block is cooperated, so that the door body with different structures is conveniently connected.

[0013] The utility model further sets up, the number of clamping blocks is two, the size of clamping block is matched with the tooth block, when needing to adjust the length of connecting arm, the clamping block is separated from the tooth block by pulling the pull rod, and the connecting arm can be moved flexibly, after the pull rod is loosened, the clamping block is clamped to the tooth block again, and the length of the connecting arm is locked.

[0014] The utility model has the following beneficial effects.

[0015] 1、 the utility model solves the adaptation problem of door closer and different door body connection through the connecting mechanism, the connecting arm is movably connected with the rotating shaft, the connecting angle can be flexibly changed, the tooth block is matched with the clamping block at the bottom of movable plate, when the movable plate is moved up by pulling the pull rod, the clamping block is separated from the tooth block, the length of the connecting arm can be easily adjusted, the installation length demand of different door body is adapted, whether it is light and thin indoor wooden door or heavy industrial iron door, the best connection length can be found through this connecting mechanism, the door closer is closely combined with the door body, and stable work is ensured, and the versatility of the door closer is greatly improved.

[0016] 2, the utility model discloses the installation component has brought great convenience for internal hydraulic spring, and the installation disc is fixed with the door closer main body with bolt through the first mounting hole, and the positioning post on the limiting seat enhances the installation stability, and the rubber ring plays the sealing and shock attenuation effect, when needing to overhaul or replace hydraulic spring, just loosen the bolt, can easily take out the installation disc and relevant components, and quickly contact internal hydraulic spring, do not need complicated dismounting process, and this design greatly shortens the maintenance time, and reduces the maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be to the embodiment described the need of the drawing used to make a brief introduction.

[0018] Figure 1 It is a perspective view of a door closer with adjustable side door opening buffer.

[0019] Figure 2 It is a side view of a door closer with adjustable side door opening buffer.

[0020] Figure 3 It is a perspective view of a hydraulic adjusting mechanism in a door closer with adjustable side door opening buffer.

[0021] Figure 4 It is a perspective view of a connecting mechanism in a door closer with adjustable side door opening buffer.

[0022] Figure 5 It is a perspective view of an installation component in a door closer with adjustable side door opening buffer.

[0023] In the drawing, 1, door closer main body, 2, rotating shaft, 3, connecting mechanism, 301, connecting arm, 302, shell, 303, tooth block, 304, connecting plate, 305, connecting piece, 306, threaded tube, 307, threaded rod, 308, movable plate, 309, clamping block, 310, compression spring, 311, pull rod, 4, installation component, 401, installation disc, 402, limiting seat, 403, positioning post, 404, rubber ring, 5, hydraulic adjusting mechanism, 501, adjusting rod, 502, hydraulic flow channel, 6, first mounting hole, 7, fixed plate, 8, second mounting hole, 9, threaded sleeve, 10, connecting block. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described in conjunction with the drawings in the embodiments of the utility model, and the described embodiments are only a part of the embodiments of the utility model, not all the embodiments.

[0025] Embodiment one

[0026] Please refer to Figures 1-5The utility model discloses a door closer of side edge adjustable door opening buffer, including door closer main part 1, the top swing joint of door closer main part 1 has the pivot 2, and the pivot 2 top is provided with the connecting mechanism 3, and one side of door closer main part 1 is provided with the installation component 4, and one side bottom of door closer main part 1 is provided with the hydraulic pressure adjusting mechanism 5, and the connecting mechanism 3 includes connecting arm 301, and one side of connecting arm 301 is swing joint with the pivot 2, and one side of connecting arm 301 is provided with the casing 302, and the top fixed connection of connecting arm 301 has the tooth block 303, and one side fixed connection of casing 302 has the connecting plate 304, and one side of connecting plate 304 is swing joint with the connecting piece 305 through the pivot 2, and one side fixed connection of connecting piece 305 has the threaded tube 306, and one side screw thread connection of threaded tube 306 has the threaded rod 307, and the inner chamber of casing 302 is provided with the movable plate 308, and both sides of movable plate 308 bottom are all fixedly connected with the clamping block 309 of adapting with tooth block 303, and one side fixed connection of movable plate 308 top has the compression spring 310, and one side fixed connection of movable plate 308 top has the pull rod 311, and the top of pull rod 311 is penetrated to the outside of casing 302.

[0027] Specific: the adjustable length design of connecting arm 301 and threaded rod 307 makes the door closer can adapt to various different sizes, weight and installation requirement door body, for the narrower indoor door, can shorten the length of connecting arm 301 and threaded rod 307, ensure that the connection is compact and stable, for large industrial door or special specification door, can be through the extension connecting arm 301 and threaded rod 307, realize reliable connection, make the door closer can be accurately installed on the door body, effectively control the door opening and closing, flexible adaptability greatly expands the application range of door closer, whether it is common civil building door or complex industrial building door, can realize perfect adaptation, the tooth shape design of tooth block 303 and clamping block 309 and the elastic force of compression spring 310 make connecting arm 301 can bear greater torsion after locking angle, ensure that the connecting part of door body does not displace in the opening and closing process.

[0028] Example two

[0029] Please refer to Figures 1-5On the basis of embodiment one, the mounting assembly 4 comprises a mounting disc 401, one side of the mounting disc 401 is fixedly connected with a limiting seat 402, one side of the limiting seat 402 extends into the inner cavity of the door closer main body 1, one side of the limiting seat 402 is fixedly connected with a positioning column 403, a rubber ring 404 is sleeved on the surface of the limiting seat 402, first mounting holes 6 are formed on both sides of the surface of the mounting disc 401, the inner cavities of the first mounting holes 6 are fixedly connected with the door closer main body 1 through bolts, fixed plates 7 are fixedly connected on both sides of the door closer main body 1, second mounting holes 8 are formed on the top and bottom of the surface of the fixed plates 7, the hydraulic adjusting mechanism 5 comprises an adjusting rod 501, one side of the adjusting rod 501 is threadedly connected with the door closer main body 1, one side of the adjusting rod 501 extends into the inner cavity of the door closer main body 1, a hydraulic flow channel 502 is formed in the inner cavity of the door closer main body 1, one side of the adjusting rod 501 extends into the inner cavity of the hydraulic flow channel 502, a threaded sleeve 9 is threadedly connected on the surface of the threaded rod 307, a connecting block 10 is fixedly connected on one side of the threaded rod 307, the number of the clamping blocks 309 is two, and the size of the clamping blocks 309 is matched with that of the toothed blocks 303.

[0030] Specifically, according to the position of the positioning column 403, the hydraulic spring is installed at the specified position, so that the positional deviation in the installation process is avoided, and the installation accuracy and efficiency are greatly improved, the sealing effect of the rubber ring 404 can ensure that the hydraulic spring operates in a good working environment, prevents impurities from entering to affect its performance, the first mounting holes 6 can quickly position the mounting disc 401, and the stability of the installation of the mounting disc 401 is ensured, the fixed plates 7 are fixed on both sides of the door closer main body 1, and the second mounting holes 8 on the top and bottom can be firmly connected with the door frame or the wall body, so that the stability of the installation of the door closer is greatly improved, the force borne by the door closer is evenly dispersed, and the damage risk of the installation part caused by concentrated stress is reduced, the adjusting rod 501 extends into the inner cavity of the hydraulic flow channel 502, the flow and speed of the hydraulic oil are changed, and thus the opening door buffering degree is accurately controlled, the side adjusting mode is simple to operate without the need to disassemble other parts, time and energy for adjustment are saved, users can adjust at any time according to actual conditions, the length of the threaded rod 307 is fixed by the threaded sleeve 9, the purpose of convenient adjustment is achieved, the threaded sleeve 9 cooperates with the connecting block 10, connection with door bodies of different structures is facilitated, when it is necessary to adjust the length of the connecting arm 301, the clamping blocks 309 are separated from the toothed blocks 303 by pulling the pull rod 311, the connecting arm 301 can be flexibly moved, after the pull rod 311 is loosened, the clamping blocks 309 re-clamp the toothed blocks 303, and the length of the connecting arm 301 is locked.

[0031] The working principle of the utility model is that: one side of connecting arm 301 is movably connected with rotating shaft 2, can rotate around rotating shaft 2 by a certain angle, when the connecting length of connecting arm 301 and door body needs to be adjusted, the user pulls up pull rod 311, pull rod 311 drives movable plate 308 to move upwards against the elastic force of compression spring 310, makes the clamping block 309 on both sides of the bottom of movable plate 308 disengage from the fixed tooth block 303 on the top of connecting arm 301, at this time, connecting arm 301 can move freely, the user adjusts it to the appropriate length, then releases pull rod 311, under the elastic force of compression spring 310, movable plate 308 resets, clamping block 309 reengages with tooth block 303, thereby locking the use length of connecting arm 301.

[0032] The user can change its position in the door closer body 1 by rotating the adjusting rod 501, one end of the adjusting rod 501 extends to the inner cavity of the door closer body 1, and further extends to the inner cavity of the hydraulic flow channel 502, when the user rotates the adjusting rod 501, the adjusting rod 501 moves in the hydraulic flow channel 502, by changing the flow and speed of the hydraulic oil, the purpose of adjusting the buffering effect is achieved.

[0033] The above disclosed preferred embodiments of the utility model are only used to help describe the utility model, the preferred embodiments do not describe all the details, and the utility model is not limited to the specific implementation mode, the description selects and specifically describes these embodiments, in order to better explain the principle and practical application of the utility model, so that the person skilled in the art can well understand and utilize the utility model.

Claims

1. A door closer with adjustable side opening door buffering, comprising a door closer body (1), characterized in that: The door closer body (1) top movable connection has the pivot (2), the pivot (2) top is provided with connecting mechanism (3), the door closer body (1) one side is provided with installation component (4), the door closer body (1) one side bottom is provided with hydraulic pressure adjusting mechanism (5); The connecting mechanism (3) includes a connecting arm (301), the connecting arm (301) one side is movably connected with the pivot (2), the connecting arm (301) one side is provided with a housing (302), the connecting arm (301) top is fixedly connected with a tooth block (303), the housing (302) one side is fixedly connected with a connecting plate (304), the connecting plate (304) one side is movably connected with a connecting piece (305) through the pivot (2), the connecting piece (305) one side is fixedly connected with a threaded tube (306), the threaded tube (306) one side is threadedly connected with a threaded rod (307), the housing (302) inner cavity is provided with a movable plate (308), the movable plate (308) bottom both sides are fixedly connected with a clamping block (309) matched with the tooth block (303), the movable plate (308) top one side is fixedly connected with a compression spring (310), the movable plate (308) top one side is fixedly connected with a pull rod (311).

2. A door closer with side adjustable door opening buffering according to claim 1, characterized in that: The installation component (4) includes an installation disc (401), the installation disc (401) one side is fixedly connected with a limiting seat (402), the limiting seat (402) one side extends to the door closer body (1) inner cavity, the limiting seat (402) one side is fixedly connected with a positioning column (403), the limiting seat (402) surface is provided with a rubber ring (404).

3. A door closer with side adjustable door opening buffering according to claim 2, characterized in that: The installation disc (401) surface both sides are provided with a first mounting hole (6), and the first mounting hole (6) inner cavity is fixedly connected with the door closer body (1) through bolts.

4. A door closer with side adjustable door opening buffering according to claim 1, characterized in that: The door closer body (1) both sides are fixedly connected with a fixed plate (7), and the fixed plate (7) surface top and bottom are provided with a second mounting hole (8).

5. A door closer with side adjustable door opening buffering according to claim 1, characterized in that: The hydraulic pressure adjusting mechanism (5) includes an adjusting rod (501), the adjusting rod (501) one side is threadedly connected with the door closer body (1), the adjusting rod (501) one side extends to the door closer body (1) inner cavity, the door closer body (1) inner cavity is provided with a hydraulic flow channel (502), and the adjusting rod (501) one side extends to the hydraulic flow channel (502) inner cavity.

6. A door closer with side adjustable door opening buffering according to claim 1, characterized in that: The threaded rod (307) surface is threadedly connected with a threaded sleeve (9), and the threaded rod (307) one side is fixedly connected with a connecting block (10).

7. A door closer with side adjustable door opening buffering according to claim 1, characterized in that: The number of clamping blocks (309) is two, and the size of the clamping block (309) is matched with the tooth block (303).