An automatic pressure relief door closer

Abstract

The utility model discloses an automatic pressure relief door closer, it includes valve body and protection subassembly, the valve body includes rotating seat, main rocker, connecting block, vice rocker and connecting seat, rotating seat fixedly connected at the top of valve body, the protection subassembly includes rotary rod, sleeve, first connecting rod, second connecting rod, third connecting rod, spring, piston block and connecting rod, the top rotatory connection of rotary rod has first connecting rod, through the above structure, through the threaded connection design of vice rocker and connecting block, has realized the convenient fine adjustment of door body installation interval, has improved the installation adaptability, simultaneously, protection subassembly adopts the collaborative work of multibar mechanism and buffer unit, converts the instantaneous impact force when opening door into spring potential energy, effectively realizes the flexible buffering of opening and closing process, reduced the rigid impact and wear and tear of main rocker, vice rocker and other transmission parts to the door closer's service life has been prolonged.

Description

Technical Field

[0001] This utility model relates to the field of door closer technology, and in particular to an automatic pressure relief door closer. Background Technology

[0002] Door closers, as key components for controlling the automatic closing of doors, are widely used in various building doors and windows. They are crucial for maintaining unobstructed passageways, providing sound and dust insulation, and enabling fire doors to close automatically. Traditional automatic door closers rely on the coordination of an internal hydraulic circuit and spring system to smoothly reset the door after it has been opened.

[0003] However, when the door is opened quickly or forcefully, a huge instantaneous impact force is generated. This impact force is directly and rigidly transmitted to the internal structure of the door closer through transmission components such as the rocker arm. Under long-term action, it can easily cause deformation and wear of key transmission components such as the main rocker arm and the auxiliary rocker arm, and even damage to the internal oil seal and hydraulic oil leakage. This will not only generate noise and affect the user experience, but also significantly shorten the overall service life of the door closer. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide an automatic pressure relief door closer that effectively solves the problem of component wear and shortened lifespan caused by instantaneous impact force in traditional door closers.

[0005] This utility model also provides an automatic pressure relief door closer as described above, comprising: a valve body and a protective assembly; the valve body includes a rotating seat, a main rocker arm, a connecting block, a secondary rocker arm, and a connecting seat, the rotating seat being fixedly connected to the top of the valve body, the main rocker arm being rotatably connected to the top of the rotating seat, the connecting block being rotatably connected to the top of the main rocker arm, the secondary rocker arm being rotatably connected to one side of the connecting block, and the connecting seat being movably connected to one side of the secondary rocker arm; the protective assembly includes a rotating rod, a sleeve, a first connecting rod, a second connecting rod, a third connecting rod, a spring, and a piston block. The rotating rod is rotatably connected to a first connecting rod at its top, a second connecting rod is rotatably connected to one side of the first connecting rod, and a third connecting rod is rotatably connected to one side of the second connecting rod. A spring is fixedly connected inside the sleeve. A piston block is disposed inside the sleeve and contacts the spring. A connecting rod is fixedly connected to one side of the piston block. A positioning block is fixedly connected to the top of the connecting rod. The positioning block is rotatably connected to the third connecting rod. A through hole is provided inside the sleeve for the positioning block to move. Through the linkage of multiple components, the smooth opening and closing of the door and the automatic pressure relief function are realized.

[0006] According to the present invention, an automatic pressure relief door closer is provided, wherein the sleeve, spring and piston block constitute a buffer unit, and two sets are provided, and the two piston blocks are connected by a connecting rod. The dual buffer unit design provides a more balanced and effective buffering force through the linkage of the connecting rod.

[0007] According to the present invention, an automatic pressure relief door closer is provided, wherein a pad is fixedly connected to the bottom of the rotating rod, and the pad is fixedly connected to the top of the main rocker arm. The pad connection improves the connection stability between the rotating rod and the main rocker arm and reduces wear.

[0008] According to the present invention, an automatic pressure relief door closer is provided, wherein the sleeve is fixedly connected to the top of the connecting block, and the sleeve being fixed to the connecting block ensures the overall rigidity and reliability of the buffer assembly.

[0009] According to the present invention, an automatic pressure relief door closer is provided, wherein a connecting rod is fixedly connected to one side of the auxiliary rocker arm, a rotating block is rotatably connected to one side of the connecting rod, and a connecting seat is rotatably connected to one side of the rotating block. The multi-joint connection design allows the auxiliary rocker arm to move flexibly in multiple directions to adapt to the movement of the door.

[0010] According to the present invention, an automatic pressure relief door closer is provided with a thread on one side of the auxiliary rocker arm, and a threaded hole is provided inside the connecting block and is threadedly connected to the threaded section of the auxiliary rocker arm. The threaded connection facilitates the length adjustment of the auxiliary rocker arm, thereby adapting to different door sizes.

[0011] According to the present invention, an automatic pressure relief door closer is provided, wherein bolt mounting seats are fixedly connected to both sides of the valve body. The bolt mounting seats simplify the installation process of the door closer on the door frame and improve the installation efficiency.

[0012] According to the present invention, an automatic pressure relief door closer is provided, wherein the spring in the buffer unit is a compression spring, and the piston block slides in contact with the inner wall of the sleeve. The combination of the compression spring and the sliding piston block ensures the smoothness and controllability of the buffering process.

[0013] Beneficial effects:

[0014] The automatic pressure relief door closer in this technical solution achieves convenient fine-tuning of the door installation spacing through the threaded connection design of the auxiliary rocker arm and the connecting block, improving installation adaptability. At the same time, the protective component adopts a multi-link mechanism and a buffer unit to work together to convert the instantaneous impact force when the door is opened into spring potential energy, effectively achieving flexible buffering of the opening and closing process, reducing rigid impact and wear on transmission components such as the main rocker arm and auxiliary rocker arm, thereby extending the service life of the door closer. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a structural diagram of the entire utility model;

[0017] Figure 2This is a structural diagram showing the connection relationship of the protective components of this utility model;

[0018] Figure 3 This is a structural diagram of the protective component of this utility model;

[0019] Figure 4 This is a structural diagram showing the connection relationship of the connector of this utility model.

[0020] Legend:

[0021] 1. Valve body; 2. Protective components;

[0022] 101. Rotating seat; 102. Main rocker arm; 103. Connecting block; 104. Secondary rocker arm; 105. Connecting seat; 106. Rotating block; 107. Connecting rod; 201. Pad block; 202. Rotating rod; 203. First connecting rod; 204. Second connecting rod; 205. Third connecting rod; 206. Positioning block; 207. Sleeve; 208. Spring; 209. Piston block; 210. Connecting rod. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] Reference Figure 1-4 This utility model provides an automatic pressure relief door closer, comprising: a valve body 1 and a protective component 2; the valve body 1 is composed of a rotating seat 101, a main rocker arm 102, a connecting block 103, a secondary rocker arm 104, and a connecting seat 105. The rotating seat 101 is fixedly installed on the top of the valve body 1. The lower end of the main rocker arm 102 is rotatably connected to the rotating seat 101. The connecting block 103 is rotatably connected to the top end of the main rocker arm 102. The secondary rocker arm 104 is threadedly connected to the threaded hole inside the connecting block 103 through a threaded section on one side. This design allows the length of the secondary rocker arm 104 extending into the connecting block 103 to be adjustable, thereby providing a fine-tuning function for the spacing of the entire door installation. The connecting seat 105 is rotatably connected to one side of the secondary rocker arm 104 through a rotating block 106 and a connecting rod 107. In addition, bolt mounting seats are fixed on both sides of the valve body 1 for reliably fixing the door closer to the door frame or door body.

[0025] The core function of the protective component 2 is to achieve flexible adjustment and effective buffering of the opening and closing distance of the double doors. It includes a pad 201 fixed to the top of the main rocker arm 102. A rotating rod 202 is fixed on the pad 201. The top of the rotating rod 202 is rotatably connected to a first connecting rod 203, a second connecting rod 204 and a third connecting rod 205 in sequence, forming a multi-link transmission mechanism. A sleeve 207 is fixed to the top of the connecting block 103. A buffer unit composed of a spring 208 and a piston block 209 is set inside the sleeve 207. Two sets of this buffer unit are symmetrically arranged. The two piston blocks 209 are connected by a connecting rod 210. A positioning block 206 is fixed to the top of the connecting rod 210. The positioning block 206 passes through the through hole on the sleeve 207 and is rotatably connected to the third connecting rod 205.

[0026] During operation, when the door is opened, the force is transmitted to the rotating rod 202 through the main rocker arm 102, which drives the multi-link mechanism to move. The third link 205 drives the positioning block 206 and the connected link 210 and piston block 209 to slide in the sleeve 207, compressing the spring 208. The initial stroke is effectively set through the threaded connection to the pre-adjusted auxiliary rocker arm 104. The protective component 2, through the synergistic effect of its multi-link mechanism and buffer unit, converts the instantaneous impact force into the potential energy of the spring, thereby buffering the opening and closing process. This reduces the rigid impact and wear on the core transmission components such as the main rocker arm 102 and auxiliary rocker arm 104 when the door is opened forcefully, effectively extending the service life of the door closer.

[0027] Working principle: When the door is opened, the force is transmitted to the rotating rod 202 through the main rocker arm 102, which drives the multi-link mechanism composed of the first link 203, the second link 204 and the third link 205 to move. This causes the third link 205 to push the positioning block 206 and the connected link 210 and piston block 209 to slide in the sleeve 207, thereby compressing the spring 208. During this process, the initial stroke is set by the secondary rocker arm 104, which is pre-adjusted by the threaded connection. The protective component 2, with the help of the multi-link transmission and the buffer unit, converts the instantaneous impact into the potential energy of the spring 208, realizing flexible buffering of the door opening process. This significantly reduces the rigid impact and wear on the transmission components such as the main rocker arm 102 and the secondary rocker arm 104, effectively extending the service life of the door closer.

[0028] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An automatic pressure relief door closer, characterized in that, include: Valve body (1) and protective components (2); The valve body (1) includes a rotating seat (101), a main rocker arm (102), a connecting block (103), a secondary rocker arm (104), and a connecting seat (105). The rotating seat (101) is fixedly connected to the top of the valve body (1). The main rocker arm (102) is rotatably connected to the top of the rotating seat (101). The connecting block (103) is rotatably connected to the top of the main rocker arm (102). The secondary rocker arm (104) is rotatably connected to one side of the connecting block (103). The connecting seat (105) is movably connected to one side of the secondary rocker arm (104). The protective assembly (2) includes a rotating rod (202), a sleeve (207), a first connecting rod (203), a second connecting rod (204), a third connecting rod (205), a spring (208), a piston block (209), and a connecting rod (210). The top of the rotating rod (202) is rotatably connected to the first connecting rod (203), one side of the first connecting rod (203) is rotatably connected to the second connecting rod (204), and one side of the second connecting rod (204) is rotatably connected to the third connecting rod (205). The sleeve (207) is fixedly connected to a spring (208), the piston block (209) is disposed inside the sleeve (207) and contacts the spring (208), a connecting rod (210) is fixedly connected to one side of the piston block (209), a positioning block (206) is fixedly connected to the top of the connecting rod (210), the positioning block (206) is rotatably connected to the third connecting rod (205), and a through hole is provided inside the sleeve (207) for the positioning block (206) to move.

2. The automatic pressure relief door closer according to claim 1, characterized in that, The sleeve (207), spring (208) and piston block (209) constitute a buffer unit, and two sets are provided, and the two piston blocks (209) are connected by a connecting rod (210).

3. An automatic pressure relief door closer according to claim 1, characterized in that, A pad (201) is fixedly connected to the bottom of the rotating rod (202), and the pad (201) is fixedly connected to the top of the main rocker arm (102).

4. An automatic pressure relief door closer according to claim 1, characterized in that, The sleeve (207) is fixedly connected to the top of the connecting block (103).

5. An automatic pressure relief door closer according to claim 1, characterized in that, A connecting rod (107) is fixedly connected to one side of the auxiliary rocker arm (104), a rotating block (106) is rotatably connected to one side of the connecting rod (107), and a connecting seat (105) is rotatably connected to one side of the rotating block (106).

6. An automatic pressure relief door closer according to claim 1, characterized in that, The auxiliary rocker arm (104) has a thread on one side, and the connecting block (103) has a threaded hole inside, which is threadedly connected to the threaded section of the auxiliary rocker arm (104).

7. An automatic pressure relief door closer according to claim 1, characterized in that, Both sides of the valve body (1) are fixedly connected with bolt mounting seats.

8. An automatic pressure relief door closer according to claim 2, characterized in that, The spring (208) in the buffer unit is a compression spring, and the piston block (209) slides in contact with the inner wall of the sleeve (207).

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