Floor spring capable of avoiding pit excavation and realizing double-section speed adjustment
A technology that avoids digging pits and floor springs, and is applied in door/window accessories, switches with braking devices, buildings, etc. It can solve the problems of fast door closing speed, inconvenient installation, and high cost, and achieves convenient use and installation. , the effect of stable function
Active Publication Date: 2013-10-16
NINGBO PENTAGON DAMPER CORP
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AI Technical Summary
Problems solved by technology
The existing floor spring needs to dig a hole on the bottom surface before installing it, and bury the floor spring in it. Its speed regulation and maintenance are inconvenient, and the function is easy to fail. When the door is automatically closed at 90 degrees to 35 degrees, the closing speed is fast, which is easy to cause injury. There are certain safety hazards; installation is inconvenient, the cost is high, and it cannot be widely used
Method used
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Embodiment Construction
[0024] Such as Figure 1-8 As shown, a digging-free double-stage speed-regulating floor spring according to the embodiment of the present invention includes a base part and a main part. The casing 13 and the lubricating oil passage 25 arranged in the casing, the middle part of the casing 13 is vertically provided with a cam shaft 16, and the left side of the cam shaft 16 is provided with a buffer piston 7 and a left cylinder head 9 in sequence, The buffer piston 7 is provided with a spring 8, and the right side of the cam shaft 16 is provided with a piston 19 and a right side cylinder head 11 in turn, the left side of the piston 19 is covered with a valve seat 17, and the right side of the piston 19 is A spring set is provided on the side; the bottom of the cam shaft 16 extends out of the housing 13 and is fixedly connected with the base part. The upper part of the cam rotating shaft 16 is connected with the casing 13 through the bearing 14 and the angular contact bearing 15 ...
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The invention relates to a floor spring capable of avoiding pit excavation and realizing double-section speed adjustment. The floor spring comprises a pedestal part and a main body part, wherein a fixed clamping plate is arranged at the right upper side of the main body part; the main body part comprises a shell and a lubricating oil path arranged in the shell; a cam rotating shaft is vertically arranged in the middle of the shell; a buffer piston and a left side cylinder cover are arranged at the left side of the cam rotating shaft sequentially; a spring is arranged in the buffer piston; a piston and a right side cylinder cover are arranged at the right side of the cam rotating shaft sequentially; a valve seat is sleeved at the left side in the piston; a spring group is arranged at the right side in the piston; and the bottom of the cam rotating shaft stretches out of the shell and is fixedly connected with the pedestal part. The floor spring has the benefits that the main body part and the pedestal part are provided, so that pit excavation on the ground is avoided and the floor spring is convenient to mount; and the pistons and the springs are arranged at the two sides of the cam rotating shaft, so that double-section speed adjustment is realized, and the floor spring is convenient to use and has a stable function.
Description
technical field [0001] The invention relates to a pit-free double-stage speed-regulating floor spring. Background technique [0002] The floor spring is a hydraulic door closer. Compared with ordinary door closers that can only be opened in one direction, the floor spring can be used for two-way opening of the door. The existing floor spring needs to dig a hole on the bottom surface before installing it, and bury the floor spring in it. Its speed regulation and maintenance are inconvenient, and the function is easy to fail. When the door is automatically closed at 90 degrees to 35 degrees, the closing speed is fast, which is easy to cause injury. There are certain potential safety hazards; the installation is inconvenient, the cost is high, and it cannot be widely used. Contents of the invention [0003] The object of the present invention is to provide a pit-free double-stage speed-regulating floor spring to overcome the above-mentioned shortcomings in the current prior ...
Claims
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Inventor 蔡赋勇
Owner NINGBO PENTAGON DAMPER CORP