Hydraulic buffering hinge shaft core
By designing an adjustable hydraulic buffer hinge core, the problems of closing force and noise on concealed doors are solved, enabling flexible adjustment and stable installation, and making it suitable for various door locks.
Patent Information
- Application Number
- CN202423180673.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Existing hydraulic buffer hinge cores cannot simultaneously meet the requirements of automatic closing and low noise in both locked and unlocked concealed doors, and adjusting the closing force is inconvenient.
A hydraulic buffer hinge core was designed, which adjusts the closing force by rotating the end cap and the shaft cap to adjust the force distance of the spring and the two-stage force resistance device. The structure is simple and the size is small.
It enables flexible adjustment of closing force, adapts to different types of door lock installation, reduces noise, and ensures stability and security.
Smart Images
Figure CN223577770U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a hydraulic buffer hinge shaft core, specifically a hydraulic buffer hinge shaft core with low hinge noise and easy adjustment. Background Technology
[0002] Currently, hidden doors on the market are divided into two types: those with locks and those without. The closing force of the hydraulic buffer hinge core used in hidden doors with and without locks needs to be the same. If the force is too small when installed on a hidden door with a lock, it is easy for the door to fail to close automatically. If the force is too large when installed on a hidden door without a lock, it will be noisy when closing automatically, and the door lock is easy to be damaged. Therefore, it is necessary to consider the problem of easily adjusting the closing force and keeping the overall size small. Utility Model Content
[0003] The purpose of this invention is to provide a hydraulic buffer hinge core, which allows for simple and convenient adjustment of the closing force of the hydraulic buffer hinge core through the end cap, and is small in size and suitable for installation on various door locks.
[0004] The technical solution of this utility model is based on end caps, shaft caps, springs, push rods, pins, two-stage force resistance devices, shafts, bushings, retaining rings, and steel balls. The key feature is that the end caps, springs, push rods, and two-stage force resistance devices are sequentially inserted into the shaft body from one end to the other. One end of the push rod has a through hole. Two annular grooves are provided on the outer cylindrical surface of the shaft body, dividing it into left, middle, and right sections. A strip-shaped through hole is provided in the middle section of the shaft body, and this through hole connects to one end of the push rod. The through holes are positioned opposite each other. The retaining ring is fitted on the annular groove on the left side of the shaft body, and the steel balls are arranged on the annular groove on the right side of the shaft body. The bushing is fitted on the middle section of the shaft body. The retaining ring contacts the left end of the bushing to limit the bushing. The inner surface of the right port of the bushing is provided with a groove that is opposite to the annular groove on the right side of the shaft body to form a steel ball mounting groove. The front and back of the bushing are symmetrically provided with S-shaped sliding openings. The S-shaped sliding openings are opposite to the strip through holes of the shaft body. The pin is inserted from the S-shaped sliding opening on the back of the bushing, passes through the strip through hole and the push rod through hole of the shaft body, and extends to the S-shaped sliding opening on the front of the bushing.
[0005] The shaft caps described in this utility model are respectively installed on the left and right ends of the shaft body. The outer surface of the shaft cap is provided with teeth. The surface on the left end of the shaft body where the shaft cap is installed is provided with a cross-section. The shaft cap is fixedly installed on the left end of the shaft body through the cross-section. The shaft cap installed on the right end of the shaft body is movably installed and can rotate freely on the shaft body. The surface of the end of the shaft sleeve adjacent to the retaining ring is provided with teeth.
[0006] The working principle of this utility model is to adjust the distance between the action of the spring and the two-stage force resistance device inside the shaft by rotating the end caps at both ends of the shaft body, thereby adjusting the closing force when the shaft sleeve rotates. Since the closing force of the shaft core is adjustable at both ends, the inner and outer hinges can be easily adjusted when installing the hinges, whether it is the left or right door.
[0007] The advantages of this utility model are simple structure, small size, low noise, stable and safe operation, adaptability to various door lock installations, and convenient resistance adjustment. Attached Figure Description
[0008] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0009] Figure 2 This is a cross-sectional three-dimensional structural schematic diagram of the present invention;
[0010] Figure 3 This is an exploded three-dimensional structural diagram of the present invention. Detailed Implementation
[0011] according to Figure 1 , Figure 2 , Figure 3 As shown, this utility model, based on end cap 1, shaft cap 2, spring 3, push rod 4, pin 5, two-stage force resistance device 6, shaft body 7, bushing 8, retaining ring 9, and steel ball 10, is characterized in that the end cap 1, spring 3, push rod 4, two-stage force resistance device 6, and end cap 1 are sequentially inserted into the shaft body 7 from one end to the other. The end cap 1 is installed using external threads and internal threads at the port of the shaft body 7. A through hole is provided at the right end of the push rod 4. Two annular grooves are provided on the outer cylindrical surface of the shaft body 7, dividing the shaft body into left, middle, and right sections. A strip-shaped through hole is provided in the middle section of the shaft body 7. The through hole and the through hole at the right end of the push rod 5 are positioned opposite each other. The retaining ring 9 is fitted on the annular groove on the left side of the shaft body 7. The steel balls 10 are arrayed on the annular groove on the right side of the shaft body 7. The bushing 8 is fitted on the middle section of the shaft body 7. The retaining ring 9 contacts the left end of the bushing 8 to limit the bushing 8. The inner surface of the right port of the bushing 8 is provided with a groove that is opposite to the annular groove on the right side of the shaft body to form a steel ball 10 mounting groove. The front and back of the bushing 8 are symmetrically provided with S-shaped sliding mouths. The S-shaped sliding mouths are opposite to the strip through hole of the shaft body. The pin 5 is inserted from the S-shaped sliding mouth on the back of the bushing 8, passes through the strip through hole of the shaft body 7 and the through hole of the push rod 4, and extends to the S-shaped sliding mouth on the front of the bushing. The shaft caps 2 are respectively installed on the left and right ends of the shaft body. The outer surface of the shaft caps 2 is provided with teeth. The surface on the left end of the shaft body 7 where the shaft caps are installed is provided with a cross-section. The shaft caps are fixedly installed on the left end of the shaft body through the cross-section. The shaft caps installed on the right end of the shaft body 7 are movable and can rotate freely on the shaft body. The surface of the shaft sleeve 8 adjacent to the retaining ring 9 is provided with teeth.
Claims
1. A hydraulic buffer hinge shaft core, comprising an end cap, a shaft cap, a spring, a push rod, a pin, a two-stage force resistance device, a shaft body, a bushing, a retaining ring, and steel balls, characterized in that... The end cap, spring, push rod, two-stage force resistance device, and end cap are sequentially inserted into the shaft body from one end to the other. One end of the push rod is provided with a through hole. Two annular grooves are provided on the outer cylindrical surface of the shaft body, dividing the shaft body into three sections: left, middle, and right. The middle section of the shaft body is provided with a strip-shaped through hole, which is positioned opposite to the through hole at one end of the push rod. A retaining ring is fitted onto the annular groove on the left side of the shaft body, and steel balls are arranged on the annular groove on the right side of the shaft body. The bushing is fitted onto the middle section of the shaft body, and the retaining ring contacts the left end of the bushing to limit the bushing. The inner surface of the right end of the bushing is provided with a groove that is opposite to the annular groove on the right side of the shaft body to form a steel ball mounting groove. The front and back of the bushing are symmetrically provided with S-shaped sliding openings, which are opposite to the strip-shaped through hole of the shaft body. A pin is inserted from the S-shaped sliding opening on the back of the bushing, passes through the strip-shaped through hole and the push rod through hole of the shaft body, and extends to the S-shaped sliding opening on the front of the bushing.
2. The hydraulic buffer hinge shaft according to claim 1, characterized in that, The shaft caps are installed on the left and right ends of the shaft body respectively. The outer surface of the shaft cap is provided with teeth. The surface of the shaft cap installed on the left end of the shaft body is provided with a cross-section. The shaft cap is fixedly installed on the left end of the shaft body through the cross-section. The shaft cap installed on the right end of the shaft body is movable and can rotate freely on the shaft body. The surface of the end of the shaft sleeve adjacent to the retaining ring is provided with teeth.