Anti-shaking door closer

Abstract

The utility model discloses an anti-shaking door closer. The anti-shaking door closer comprises a shell, a piston, a reset mechanism and a pressing mechanism. The shell is provided with an inner cavity; the piston is arranged in the inner cavity and divides the inner cavity into a front cavity and a rear cavity, the piston is provided with an installation groove communicated with the rear cavity, the piston is provided with an installation hole leading to the front cavity from the installation groove, the side, located on the front cavity, of the installation hole is provided with a one-way valve leading to the front cavity from the installation groove, and the installation groove is provided with a cam used for pushing the piston to move towards one side of the rear cavity. The cam is provided with a mounting shaft which extends out of the shell; the reset mechanism comprises a reset spring arranged in the rear cavity, and a first roller used for abutting against the cam in a rolling mode is arranged on the side, close to the rear cavity, of the mounting groove. The pressing mechanism comprises a pressing spring and a second roller which are arranged in the mounting hole and located on one side of the mounting groove, and the pressing spring is used for pushing the second roller to abut against the cam in a rolling mode. Therefore, the cam can be reasonably pressed along with the rotation of the cam, so that the product cannot shake in the door opening and closing process.

Description

Technical Field

[0001] The utility model relates to the field of door closers, in particular to an anti-sway door closer. Background Art

[0002] The door closer is a spring-like hydraulic device on the door head. When the door is opened, it can be compressed and then released to automatically close the door. It acts like a spring door and can ensure that the door is closed to its initial position accurately and promptly after being opened.

[0003] Chinese patent CN219528760U discloses a double-opening door closer that can be opened on both sides. During the rotation of the cam inside the door closer, a gap will appear between the cam and the piston on one side of the front cavity. Therefore, the door leaf will shake during the process of opening or closing the door. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an anti-sway door closer, which can keep a reasonable compression on the cam as the cam rotates, so that the product will not shake during the door opening and closing process.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] An anti-sway door closer, comprising

[0007] A housing having an inner cavity;

[0008] A piston is arranged in the inner cavity, the piston divides the inner cavity into a front cavity and a rear cavity, the piston is provided with a mounting groove communicating with the rear cavity, the piston is provided with a mounting hole leading from the mounting groove to the front cavity, the mounting hole is located at one side of the front cavity and is provided with a one-way valve leading from the mounting groove to the front cavity, the mounting groove is provided with a cam for pushing the piston to move toward the rear cavity, and the cam is provided with a mounting shaft extending to the outside of the housing;

[0009] A reset mechanism, comprising a reset spring provided in the rear cavity, and a first roller provided on one side of the mounting groove close to the rear cavity for rolling contact with the cam;

[0010] The clamping mechanism comprises a clamping spring and a second roller arranged at a mounting hole on one side of the mounting groove, wherein the clamping spring is used to push the second roller to roll and abut against the cam.

[0011] According to an embodiment of the utility model, an anti-sway door closer has at least the following beneficial effects: when opening the door, the cam is driven to rotate by the mounting shaft, and the cam rolls and abuts against the first roller, thereby pushing the piston to move to one side of the rear chamber, and the hydraulic oil flows from the rear chamber to the front chamber through the one-way valve. At this time, the reset spring is compressed, and at the same time, the clamping spring of the clamping mechanism pushes the second roller to roll and abut against the other side of the cam, thereby ensuring that the cam is reasonably clamped. Similarly, when closing the door, the reset spring resets and pushes the piston to move to one side of the front chamber, and the hydraulic oil flows back through the overflow channel. The first roller abuts against the cam, causing the cam to rotate back and drive the mounting shaft to close the door. At the same time, the clamping spring also always pushes the second roller to roll and abut against the cam. Therefore, as the cam rotates, the cam can be reasonably clamped, so that the product will not shake during the process of opening and closing the door.

[0012] According to some embodiments of the present invention, two first rollers are provided, which are respectively arranged on both sides of the installation groove.

[0013] Advantageously, two rollers are arranged on both sides of the mounting groove so that the cam can be stopped when the cam moves to a certain position, thereby achieving the effect of stopping the door closer at a certain angle.

[0014] According to some embodiments of the utility model, recesses cooperating with the two first rollers are respectively provided on both sides of the cam.

[0015] Advantageously, the recessed portions provided on both sides of the cam cooperate with the first roller, which is conducive to the cooperation and stop of the cam and the first roller.

[0016] According to some embodiments of the utility model, a cantilever is provided at the top of the installation groove, and the cantilever and the bottom surface of the installation groove form a first accommodating groove for accommodating the first roller, and the first accommodating groove is provided with a first rotating shaft rotatably connected to the first roller.

[0017] Advantageously, the provision of a cantilever to form the first accommodating groove and the provision of the first rotating shaft are conducive to accommodating and installing the first roller.

[0018] According to some embodiments of the utility model, the mounting hole is further provided with a clamping block, the second roller is rotatably connected to the clamping block, and the clamping spring abuts against the clamping block.

[0019] Advantageously, the installation hole is provided with a clamping block, which is conducive to installing the second roller, so that the compression spring abuts against the clamping block, ensuring that the second roller abuts against the cam in a rolling manner.

[0020] According to some embodiments of the present invention, the clamping block is cylindrical in shape, and is provided with a second receiving groove for receiving the second roller, and the second receiving groove is provided with a second rotating shaft rotatably connected to the second roller.

[0021] Advantageously, the shape of the clamping block is set to be cylindrical, which is conducive to matching with the mounting hole, and the second accommodating groove and the second rotating shaft are provided on the clamping block, which is conducive to installing the second roller.

[0022] According to some embodiments of the present utility model, a bearing is provided at the connection between the mounting shaft and the housing.

[0023] It is beneficial that a bearing is arranged at the connection between the mounting shaft and the housing to ensure smooth rotation of the shaft, which is beneficial to the opening and closing of the door leaf.

[0024] According to some embodiments of the present utility model, a sealing ring is provided at the connection between the installation shaft and the housing.

[0025] It is beneficial that a sealing ring is arranged at the connection between the mounting shaft and the housing to play a sealing role and prevent hydraulic oil leakage.

[0026] According to some embodiments of the utility model, a clamping groove is provided on the top of the shell, and the clamping groove is used to connect with the door leaf.

[0027] Advantageously, a clamping groove is provided on the top of the shell body to facilitate installation of the door leaf.

[0028] According to some embodiments of the utility model, a mounting cover plate is provided at one end of the mounting shaft located outside the shell, and the mounting cover plate is used to be fixedly connected to the door frame.

[0029] Advantageously, a mounting cover plate is provided at one end of the mounting shaft to facilitate fixed connection with the door frame.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0032] Figure 1 A schematic diagram of an embodiment of the utility model;

[0033] Figure 2 for Figure 1 A cross-sectional schematic diagram of

[0034] Figure 3 for Figure 2 A cross-sectional view of the middle shell at the overflow channel;

[0035] Figure 4 for Figure 1 A schematic diagram of the interior of the middle shell;

[0036] Figure 5 for Figure 4 Schematic diagram of the cam.

[0037] Figure numerals: housing 100, piston 110, front chamber 120, rear chamber 130, mounting groove 140, overflow channel 150, mounting hole 160, one-way valve 170, cam 180, mounting shaft 190, return spring 200, first roller 210, compression spring 220, second roller 230, recess 240, cantilever 250, first accommodating groove 260, first rotating shaft 270, clamping block 280, second accommodating groove 290, second rotating shaft 300, bearing 310, sealing ring 320, clamping groove 330, mounting cover plate 340. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0040] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0041] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0042] Reference below Figure 1 An anti-sway door closer is described in detail with a specific embodiment. It is worth noting that the following description is only an exemplary description and not a specific limitation of the utility model.

[0043] like Figure 1-Figure 4As shown, an anti-sway door closer includes a housing 100, a piston 110, a reset mechanism and a clamping mechanism.

[0044] The housing 100 is provided with an inner cavity; the piston 110 is arranged in the inner cavity, the piston 110 divides the inner cavity into a front cavity 120 and a rear cavity 130, the piston 110 is provided with a mounting groove 140 communicating with the rear cavity 130, the piston 110 is provided with a mounting hole 160 leading from the mounting groove 140 to the front cavity 120, the mounting hole 160 is located on one side of the front cavity 120 and is provided with a one-way valve 170 leading from the mounting groove 140 to the front cavity 120, the mounting groove 140 is provided with a one-way valve 170 for pushing the piston 110 to the side of the rear cavity 130 The cam 180 is provided with a mounting shaft 190 extending outside the housing 100; the reset mechanism includes a reset spring 200 provided at the rear cavity 130, and a first roller 210 for rolling against the cam 180 is provided at the side of the mounting groove 140 close to the rear cavity 130; the pressing mechanism includes a pressing spring 220 and a second roller 230 provided at the side of the mounting hole 160 located at the mounting groove 140, and the pressing spring 220 is used to push the second roller 230 to roll against the cam 180. When the door is opened, the cam 180 is driven to rotate by the mounting shaft 190, and the cam 180 rolls against the first roller 210, thereby pushing the piston 110 to move to one side of the rear cavity 130, and the hydraulic oil flows from the rear cavity 130 to the front cavity 120 through the one-way valve 170, at which time the reset spring 200 is compressed, and at the same time, the pressing spring 220 of the pressing mechanism pushes the second roller 230 to roll against the other side of the cam 180, thereby ensuring that the cam 180 is reasonably pressed. Similarly, when closing the door, the reset spring 200 resets and pushes the piston 110 to move toward the side of the front chamber 120, and the hydraulic oil flows back through the overflow channel 150. The first roller 210 abuts against the cam 180, causing the cam 180 to rotate back and drive the mounting shaft 190 to close the door. At the same time, the clamping spring 220 also always pushes the second roller 230 to roll and abut against the cam 180. Therefore, as the cam 180 rotates, the cam 180 can be reasonably clamped to prevent the product from shaking during the process of opening and closing the door.

[0045] Specifically, two first rollers 210 are provided, which are respectively arranged on both sides of the installation groove 140. The two rollers arranged on both sides of the installation groove 140 can stop the cam 180 when it moves to a certain position, thereby playing the role of stopping the door closer at a certain angle. Figure 5 As shown, recesses 240 are respectively provided on both sides of the cam 180 to cooperate with the two first rollers 210. Providing the recesses 240 on both sides of the cam 180 to cooperate with the first rollers 210 is conducive to the cam 180 and the first rollers 210 to stop.

[0046] like Figure 2 and Figure 4As shown, a cantilever 250 is provided at the top of the mounting groove 140, and the cantilever 250 and the bottom surface of the mounting groove 140 form a first receiving groove 260 for receiving the first roller 210, and the first receiving groove 260 is provided with a first rotating shaft 270 rotatably connected to the first roller 210. Providing the cantilever 250 to form the first receiving groove 260 and providing the first rotating shaft 270 is conducive to accommodating and installing the first roller 210.

[0047] In addition, if Figure 2 As shown, the mounting hole 160 is further provided with a clamping block 280, the second roller 230 is rotatably connected to the clamping block 280, and the pressing spring 220 abuts against the clamping block 280. The mounting hole 160 is provided with the clamping block 280, which is conducive to the installation of the second roller 230, so that the pressing spring 220 abuts against the clamping block 280, ensuring that the second roller 230 rolls against the cam 180. Specifically, the clamping block 280 is cylindrical in shape, and the clamping block 280 is provided with a second accommodating groove 290 for accommodating the second roller 230, and the second accommodating groove 290 is provided with a second rotating shaft 300 rotatably connected to the second roller 230. The cylindrical shape of the clamping block 280 is conducive to the cooperation with the mounting hole 160, and the second accommodating groove 290 and the second rotating shaft 300 are provided in the clamping block 280, which is conducive to the installation of the second roller 230.

[0048] It should be noted that if Figure 2 As shown, a bearing 310 is provided at the connection between the mounting shaft 190 and the housing 100. The bearing 310 is provided at the connection between the mounting shaft 190 and the housing 100 to ensure smooth rotation of the shaft, which is conducive to the opening and closing of the door leaf. In addition, a sealing ring 320 is provided at the connection between the mounting shaft 190 and the housing 100. The sealing ring 320 is provided at the connection between the mounting shaft 190 and the housing 100 to play a sealing role and prevent hydraulic oil leakage.

[0049] It is worth mentioning that Figure 1 As shown, a clamping groove 330 is provided at the top of the housing 100, and the clamping groove 330 is used to connect with the door leaf. The clamping groove 330 is provided at the top of the housing 100 to facilitate the installation of the door leaf. In addition, a mounting cover plate 340 is provided at one end of the mounting shaft 190 located outside the housing 100, and the mounting cover plate 340 is used to be fixedly connected with the door frame. The mounting cover plate 340 is provided at one end of the mounting shaft 190 to facilitate the fixed connection with the door frame.

[0050] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. An anti-sway door closer, characterized in that: include: A housing (100) having an inner cavity; A piston (110) is arranged in the inner cavity, the piston (110) divides the inner cavity into a front cavity (120) and a rear cavity (130), the piston (110) is provided with a mounting groove (140) communicating with the rear cavity (130), the housing (100) is provided with an overflow channel (150) communicating with the front cavity (120) and the mounting groove (140), and the piston (110) is provided with a flow channel (150) connecting the front cavity (120) and the mounting groove (140). The mounting hole (160) of the front chamber (120) is provided at one side of the front chamber (120) with a one-way valve (170) leading from the mounting groove (140) to the front chamber (120), the mounting groove (140) is provided with a cam (180) for pushing the piston (110) to move toward the side of the rear chamber (130), and the cam (180) is provided with a mounting shaft (190) extending to the outside of the housing (100); A reset mechanism, comprising a reset spring (200) provided in the rear cavity (130), and a first roller (210) for rolling contact with the cam (180) provided on a side of the mounting groove (140) close to the rear cavity (130); The clamping mechanism comprises a clamping spring (220) and a second roller (230) arranged on the side of the mounting hole (160) located on the mounting groove (140), wherein the clamping spring (220) is used to push the second roller (230) to roll and abut against the cam (180).

2. The anti-sway door closer according to claim 1, characterized in that: Two first rollers (210) are provided, and are respectively arranged on both sides of the installation groove (140).

3. The anti-sway door closer according to claim 2, characterized in that: Concave portions (240) cooperating with the two first rollers (210) are respectively provided on both sides of the cam (180).

4. The anti-sway door closer according to claim 2, characterized in that: A cantilever (250) is provided at the top of the installation groove (140), and the cantilever (250) and the bottom surface of the installation groove (140) form a first accommodating groove (260) for accommodating the first roller (210), and the first accommodating groove (260) is provided with a first rotating shaft (270) rotatably connected to the first roller (210).

5. The anti-sway door closer according to claim 1, characterized in that: The mounting hole (160) is also provided with a clamping block (280), the second roller (230) is rotatably connected to the clamping block (280), and the pressing spring (220) is in abutment with the clamping block (280).

6. The anti-sway door closer according to claim 5, characterized in that: The clamping block (280) is cylindrical in shape, and is provided with a second receiving groove (290) for receiving the second roller (230), and the second receiving groove (290) is provided with a second rotating shaft (300) rotatably connected to the second roller (230).

7. The anti-sway door closer according to claim 1, characterized in that: A bearing (310) is provided at the connection between the installation shaft (190) and the housing (100).

8. The anti-sway door closer according to claim 1, characterized in that: A sealing ring (320) is provided at the connection between the installation shaft (190) and the housing (100).

9. The anti-sway door closer according to claim 1, characterized in that: A clamping groove (330) is provided on the top of the housing (100), and the clamping groove (330) is used to be connected to a door leaf.

10. The anti-sway door closer according to claim 1, characterized in that: An installation cover plate (340) is provided at one end of the installation shaft (190) located outside the housing (100), and the installation cover plate (340) is used for being fixedly connected to a door frame.

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