Heavy spring door upper shaft

Abstract

The utility model discloses a heavy spring door upper shaft, and particularly relates to the field of door spindles, the heavy spring door upper shaft comprises a shaft sleeve, the top of the shaft sleeve is fixedly connected with a stabilizing ring, the bottom end of the stabilizing ring is sleeved with a mounting plate, a rotating shaft is inserted into the top of the stabilizing ring, the bottom of the rotating shaft is fixedly connected with a spring, and a rolling ball is arranged in the top end of the rotating shaft. A limiting sliding groove and a limiting hole are formed in one side of the shaft sleeve, and a through hole is formed in the bottom end of the shaft sleeve. According to the device, firstly, through the arranged rotating block, the rotating block can be directly rotated to be inserted into the limiting hole during mounting and dismounting, the moving position of the rotating shaft can be limited and fixed, the rotating block is moved out of the limiting hole, so that the threaded rod slides in the limiting sliding groove, and the position of the rotating shaft can be moved; and the threaded rod is in threaded connection with the threaded sleeve rod and located in the middle of the shaft sleeve, rusting generated after long-term use can be avoided, and it is avoided that dismounting and overhauling are affected.

Description

Technical Field

[0001] The utility model relates to the technical field of door shafts, and more specifically, to an upper shaft of a heavy-duty floor-spring door. Background Art

[0002] The spring-loaded door uses an underground door shaft spring or a built-in vertical floor spring. The door leaf can be opened freely inside and outside. When not touched, the door leaf is in a closed position. The spring-loaded door is a common door in decoration projects. It is a door that can be opened freely inside and outside. The door shaft is mainly used to connect the door frame and the door, so that the door can be opened and closed relative to the door frame with the door shaft as the center. The upper shaft of the spring-loaded door is a connecting piece that carries the rotating shaft.

[0003] The existing upper shaft of the floor-spring door moves the shaft up and down by driving a screw with an external hexagonal wrench and inserting one end of the screw into two different limit holes to achieve the limit fixation of the shaft position. An external workpiece is required for control and adjustment, which is inconvenient for installation and disassembly. When rust occurs at the position of the screw hole, it will affect the disassembly and use effect. Utility Model Content

[0004] In order to overcome the above defects of the prior art, the utility model provides a heavy-duty floor-spring door upper shaft to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heavy-duty floor spring door upper shaft, comprising a shaft sleeve, the top of the shaft sleeve is fixedly connected with a stabilizing ring, the bottom end of the stabilizing ring is sleeved with a mounting plate, the top of the stabilizing ring is inserted with a rotating shaft, the bottom of the rotating shaft is fixedly connected with a spring, a rolling ball is arranged inside the top of the rotating shaft, and a limiting sliding groove and a limiting hole are provided on one side of the shaft sleeve;

[0006] A through hole is provided at the bottom end of the sleeve, a limiting groove is provided at one end of the inner cavity of the through hole, a threaded sleeve rod is inserted in the middle of the through hole, one end of the threaded sleeve rod is fixedly connected to a limiting block, a threaded rod is inserted at one end of the threaded sleeve rod, one end of the threaded rod is fixedly connected to a rotating block, and a plurality of mounting holes are provided on the surface of the mounting plate.

[0007] Preferably, a limiting ring is fixedly connected to the bottom of the inner cavity of the sleeve, the limiting ring is located at the bottom end of the spring, and the inner cavity diameter of the stabilizing ring is the same as that of the inner cavity of the sleeve and is compatible with the rotating shaft.

[0008] Preferably, one end of the mounting plate is fixedly connected to the wall of the stabilizing ring and the sleeve by welding, the angle between the mounting plate and the through hole is ninety degrees, and the rolling ball is movably limitedly connected to the rotating shaft.

[0009] Preferably, the cross-sectional shape of the limiting block is matched with the cross-sectional shape of the inner cavity of the limiting groove, the cross-sectional shape of the limiting block is set to be a hexagon, and the limiting block is arranged inside the limiting groove.

[0010] Preferably, the threaded rod is threadedly connected to the threaded sleeve rod, the diameter of the threaded rod is smaller than the width of the limiting sliding groove, and the diameter of the rotating block is smaller than the diameter of the limiting hole.

[0011] Preferably, the limiting sliding groove is communicated with the limiting hole, the rotating block is located in the middle of the limiting hole, and one end of the rotating block passes through the limiting hole and extends to the outside.

[0012] Preferably, a placement groove is provided at one end of the inner cavity of the through hole away from the limiting groove, and the diameter of the placement groove is the same as the diameter of the limiting hole.

[0013] Technical effects and advantages of the utility model:

[0014] 1. The utility model firstly provides a rotating block, which can be directly rotated to insert into the limiting hole during installation and disassembly, so as to limit and fix the moving position of the rotating shaft, and the rotating block is moved out from the limiting hole to make the threaded rod slide in the limiting slide groove, so as to move the position of the rotating shaft, which is convenient for control and use. The threaded rod is threadedly connected with the threaded sleeve rod and is located in the middle of the sleeve, so that rust can be avoided after long-term use, and the disassembly and maintenance can be avoided. After rust, the threaded sleeve rod can be replaced by disassembling the threaded rod and the rotating block and pulling out the rotating shaft, so as to improve the use effect.

[0015] 2. The utility model can improve the smoothness of the rotation of the top of the shaft by setting the rolling ball, avoid friction, and conveniently control one end of the shaft to move out from the inside of the sleeve by the spring, which is convenient for use, and the spring can be limited and supported by the limiting ring at the bottom of the inner cavity of the sleeve, and the mounting plate can be conveniently installed and fixed through the mounting hole, which is convenient for use, and the threaded sleeve rod can be conveniently fixed and installed by the cooperation of the setting limiting block and the limiting groove, thereby improving the use effect;

[0016] In summary, through the mutual influence of the above-mentioned multiple effects, the position of the rotating shaft can be directly controlled without the need for external workpieces. At the same time, rust between the fixed screw and the screw hole after long-term use can be avoided, and individual components can be easily disassembled and replaced, making it easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a front view structural schematic diagram of the utility model.

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the connection between the shaft sleeve and the rotating shaft of the utility model.

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the shaft sleeve of the utility model.

[0021] Figure 5 It is a schematic diagram of the split structure of the rotating shaft and the threaded rod of the utility model.

[0022] The accompanying drawings are marked as follows: 1. sleeve; 2. stabilizing ring; 3. mounting plate; 4. rotating shaft; 5. spring; 6. rolling ball; 7. limiting slide groove; 8. limiting hole; 9. through hole; 10. limiting groove; 11. threaded sleeve rod; 12. limiting block; 13. threaded rod; 14. rotating block; 15. mounting hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] As attached Figure 1-5 The upper shaft of a heavy-duty floor-spring door shown in the figure comprises a shaft sleeve 1, a stabilizing ring 2 is fixedly connected to the top of the shaft sleeve 1 to improve the stability of the up and down movement of the rotating shaft 4, a mounting plate 3 is sleeved on the bottom end of the stabilizing ring 2, and the mounting plate 3 is convenient for installing and fixing the position of the shaft sleeve 1, a rotating shaft 4 is inserted on the top of the stabilizing ring 2 to facilitate connection and use, a spring 5 is fixedly connected to the bottom of the rotating shaft 4, and the spring 5 pushes the rotating shaft 4 to improve the connection stability between the rotating shaft 4 and the connecting piece, thereby improving the use effect, a rolling ball 6 is arranged inside the top end of the rotating shaft 4, and the rolling ball 6 is used to avoid friction between the rotating shaft 4 and the top connecting piece, thereby improving the smoothness of the rotation of the rotating shaft 4 and improving the use effect, and a limiting groove 7 and a limiting hole 8 are provided on one side of the shaft sleeve 1 to facilitate limiting and fixing the moving position of the rotating shaft 4 to improve the use effect;

[0025] A through hole 9 is provided at the bottom end of the shaft sleeve 1, a limiting groove 10 is provided at one end of the inner cavity of the through hole 9, a threaded sleeve rod 11 is inserted in the middle of the through hole 9, one end of the threaded sleeve rod 11 is fixedly connected to a limiting block 12, a threaded rod 13 is inserted at one end of the threaded sleeve rod 11, and one end of the threaded rod 13 is fixedly connected to a rotating block 14, and a plurality of mounting holes 15 are provided on the surface of the mounting plate 3, the threaded sleeve rod 11 is placed through the through hole 9, and the limiting block 12 is limited by the limiting groove 10, so that it is convenient to control the rotation of the threaded rod 13, and by rotating the rotating block 14, it can be adjusted whether the rotating block 14 is moved out from the inside of the limiting hole 8, thereby improving the use effect, facilitating the control of the up and down movement of the rotating shaft 4, and conveniently installing and fixing the mounting plate 3 through the mounting hole 15, thereby installing and fixing the shaft sleeve 1.

[0026] As attached Figure 3 , 4 As shown, a limiting ring is fixedly connected to the bottom of the inner cavity of the sleeve 1, and the limiting ring is located at the bottom end of the spring 5. The inner cavity diameter of the stabilizing ring 2 is the same as the inner cavity diameter of the sleeve 1 and is adapted to the rotating shaft 4. The bottom end position of the spring 5 is limited by the limiting ring, and the stability of the up and down movement of the rotating shaft 4 can be improved by the stabilizing ring 2 and the sleeve 1.

[0027] As attached Figure 1-3 As shown, one end of the mounting plate 3 is welded and fixedly connected to the wall of the stabilizing ring 2 and the sleeve 1, the angle between the mounting plate 3 and the through hole 9 is ninety degrees, the ball 6 is movably limitedly connected to the rotating shaft 4, the ball 6 is used to improve the rotation smoothness of the rotating shaft 4 and the top connecting piece, and the installation of the mounting plate 3 does not affect the movement control of the rotating block 14.

[0028] As attached Figure 5 As shown, the cross-sectional shape of the limit block 12 is adapted to the cross-sectional shape of the inner cavity of the limit groove 10. The cross-sectional shape of the limit block 12 is set to a hexagon. The limit block 12 is set inside the limit groove 10. By positioning the limit block 12 inside the limit groove 10, the inserted threaded sleeve 11 can be limited, which facilitates the rotation and movement of the threaded rod 13 and is convenient for fixed use.

[0029] As attached Figure 3 , 5 As shown, the threaded rod 13 is threadedly connected to the threaded sleeve 11, the diameter of the threaded rod 13 is smaller than the width of the limiting slide groove 7, and the diameter of the rotating block 14 is smaller than the diameter of the limiting hole 8. By rotating the rotating block 14 to control the threaded rod 13 to move toward the inside of the threaded sleeve 11, the rotating block 14 can be inserted into the inside of the limiting hole 8. Through the cooperation of the rotating block 14 and the limiting hole 8, the moving position of the rotating shaft 4 is limited, thereby improving the connection and use effect of the rotating shaft 4.

[0030] As attached Figure 1-4As shown, the limiting slide groove 7 and the limiting hole 8 are connected, the rotating block 14 is located in the middle of the limiting hole 8, and one end of the rotating block 14 passes through the limiting hole 8 and extends to the outside. By the rotating block 14 being located inside the limiting hole 8, the position of the rotating shaft 4 can be fixed, and the rotating block 14 can be moved out from the inside of the limiting hole 8. By moving the rotating block 14, one end of the threaded rod 13 can be driven to move inside the limiting slide groove 7, thereby controlling the up and down movement of the rotating shaft 4, which is convenient for use.

[0031] As attached Figure 3 As shown in FIG. 5 , a placement groove is provided at one end of the inner cavity of the through hole 9 away from the limiting groove 10, and the diameter of the placement groove is the same as the diameter of the limiting hole 8. The placement groove can improve the effect of the rotating block 14 being located inside the limiting hole 8, thereby improving the position fixing strength of the rotating block 14 on the rotating shaft 4 and improving the use effect.

[0032] Working principle of the utility model: when in use, it is only necessary to insert the internal bolts of the mounting hole 15 to fix the mounting plate 3 in the preset position, and when installing, by pressing the rotating block 14, the threaded rod 13 slides inside the limiting slide groove 7, so that the rotating shaft 4 squeezes the spring 5, so that the top end of the rotating shaft 4 moves to the middle of the stabilizing ring 2, so that the top end of the rotating shaft 4 corresponds to the sleeve of the connecting piece, and the rotating block 14 is loosened, so that the top end of the rotating shaft 4 is inserted into the sleeve of the connecting piece to realize the installation connection;

[0033] At the same time, by rotating the rotating block 14, one end of the rotating block 14 passes through the limiting hole 8 and moves to the placement hole at the bottom end of the rotating shaft 4. The cooperation between the rotating block 14 and the limiting hole 8 can improve the position fixing effect of the rotating shaft 4 and the connection effect. The rolling ball 6 can avoid friction between the top end of the rotating shaft 4 and the top wall of the sleeve inner cavity of the connecting piece, thereby improving the use effect of the connection of the rotating shaft 4.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heavy-duty spring door upper shaft, comprising a shaft sleeve (1), characterized in that: The top of the shaft sleeve (1) is fixedly connected to a stabilizing ring (2), the bottom of the stabilizing ring (2) is sleeved with a mounting plate (3), the top of the stabilizing ring (2) is inserted with a rotating shaft (4), the bottom of the rotating shaft (4) is fixedly connected to a spring (5), a rolling ball (6) is arranged inside the top of the rotating shaft (4), and a limiting sliding groove (7) and a limiting hole (8) are provided on one side of the shaft sleeve (1); A through hole (9) is provided at the bottom end of the shaft sleeve (1), a limiting groove (10) is provided at one end of the inner cavity of the through hole (9), a threaded sleeve rod (11) is inserted in the middle of the through hole (9), one end of the threaded sleeve rod (11) is fixedly connected to a limiting block (12), a threaded rod (13) is inserted at one end of the threaded sleeve rod (11), one end of the threaded rod (13) is fixedly connected to a rotating block (14), and a plurality of mounting holes (15) are provided on the surface of the mounting plate (3).

2. The upper shaft of a heavy-duty floor-spring door according to claim 1, characterized in that: A limiting ring is fixedly connected to the bottom of the inner cavity of the shaft sleeve (1), and the limiting ring is located at the bottom end of the spring (5). The inner cavity diameter of the stabilizing ring (2) is the same as the inner cavity diameter of the shaft sleeve (1), and is compatible with the rotating shaft (4).

3. The upper shaft of a heavy-duty floor-spring door according to claim 1, characterized in that: One end of the mounting plate (3) is welded and fixedly connected to the wall of the stabilizing ring (2) and the shaft sleeve (1); the angle between the mounting plate (3) and the through hole (9) is ninety degrees; and the rolling ball (6) is movably limitedly connected to the rotating shaft (4).

4. The upper shaft of a heavy-duty floor-spring door according to claim 1, characterized in that: The cross-sectional shape of the limit block (12) is compatible with the cross-sectional shape of the inner cavity of the limit groove (10), the cross-sectional shape of the limit block (12) is set to be a hexagon, and the limit block (12) is arranged inside the limit groove (10).

5. The upper shaft of a heavy-duty floor-spring door according to claim 1, characterized in that: The threaded rod (13) is threadedly connected to the threaded sleeve rod (11); the diameter of the threaded rod (13) is smaller than the width of the limiting sliding groove (7); and the diameter of the rotating block (14) is smaller than the diameter of the limiting hole (8).

6. The upper shaft of a heavy-duty floor-spring door according to claim 1, characterized in that: The limiting sliding groove (7) is connected to the limiting hole (8), the rotating block (14) is located in the middle of the limiting hole (8), and one end of the rotating block (14) passes through the limiting hole (8) and extends to the outside.

7. The upper shaft of a heavy-duty floor-spring door according to claim 1, characterized in that: A placement groove is provided at one end of the inner cavity of the through hole (9) away from the limiting groove (10), and the diameter of the placement groove is the same as the diameter of the limiting hole (8).

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