Door closer convenient to add and change oil

Abstract

The utility model provides a door closer convenient to add and change oil, which relates to the technical field of door closers and comprises a mounting plate A and a mounting plate B. An inserting strip is rotatably connected in the mounting plate A. A door closer body is fixedly mounted on the surface of the mounting plate A. A connecting rod A is rotatably connected to the surface of the door closer body. The end, away from the door closer body, of the connecting rod A is rotationally connected with a rotating block, the surface of the rotating block is rotationally connected with a connecting rod B, and the interior of the connecting rod B is slidably connected with a sleeve rod. Through the arrangement of a sliding rod, a spring, a sleeve gasket, an ejector block, an oil injection hole, a sliding groove, a limiting block, a limiting groove, a rotary knob, a threaded groove and a soft cushion, the effect that oil injection and oil replacement are conveniently conducted on the door closer body through the oil injection hole is achieved, the situation that technical personnel need to conduct oil replacement on the door closer body during oil injection and oil replacement is avoided, and the efficiency of maintaining the door closer body is improved; and the maintenance cost of the door closer body is reduced, the structure is simple, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of door closers, in particular to a door closer which is convenient for refueling and oil changing. Background Art

[0002] A door closer is a device installed on a door to control the opening and closing of the door and ensure that the door closes automatically. It can control the closing speed of the door smoothly and silently, providing safe and convenient door control.

[0003] Publication No. CN216197390U discloses a door closer, comprising a door closer body, a connecting seat and a connecting rod mechanism, wherein the door closer body is used to be installed on one of the door bodies or door frames; the connecting seat is used to be installed on the other of the door bodies or door frames; the connecting rod mechanism is used to connect the door closer body and the connecting seat, comprising a swing rod and a telescopic rod, one end of the swing rod is hinged to the door closer body, the other end of the swing rod is hinged to the telescopic rod, the end of the telescopic rod away from the swing rod is hinged to the connecting seat, the telescopic rod comprises an insertion rod and a sleeve rod, the sleeve rod is provided with a slot for accommodating the insertion rod, the side of the sleeve rod is provided with an adjustment hole connected to the slot, and the adjustment hole is used to accommodate a bolt to fix the sleeve rod. After the door closer is installed, the length of the telescopic rod can still be adjusted to adjust the opening and closing angle of the door closer without removing the door closer, which is convenient for adjustment. Although this type of door closer facilitates the adjustment of the opening and closing angle of the door closer, it is not convenient for oil change and refueling. Since the hydraulic cylinder in the door closer is filled with lubricating oil, which will be contaminated or gradually aged during use, the door closer needs to be oil changed and refueled. When oil refueling and oil change are needed, this type of door closer needs to be maintained by technicians in this field, which not only increases the maintenance cost of the door closer, but also reduces the maintenance efficiency, which is not conducive to the user's self-maintenance. Utility Model Content

[0004] The purpose of the utility model is to solve the technical problems raised in the above background technology.

[0005] The utility model adopts the following technical scheme: a door closer with convenient oiling and oil changing, comprising a mounting plate A and a mounting plate B, the mounting plate A being rotatably connected with an insert strip inside, the mounting plate A being fixedly mounted with a door closer body on the surface, the surface of the door closer body being rotatably connected with a pressing connecting rod A, the connecting rod A being rotatably connected with a rotating block at one end away from the door closer body, the surface of the rotating block being rotatably connected with a connecting rod B, the interior of the connecting rod B being slidably connected with a sleeve rod, the bottom surface of the door closer body being provided with a sliding groove, the inner surface of the sliding groove being provided with an oil filling hole, a limiting block being fixedly mounted on the bottom surface of the door closer body, a limiting groove being provided on the surface of the limiting block, a sliding rod being slidably connected with the interior of the sliding groove, a top block being fixedly mounted with a sleeve pad on the surface of the top block, a threaded groove being provided on the surface of the top block, a twist being rotatably connected in the threaded groove, and a cushion being fixedly mounted on the surface of the twist.

[0006] Preferably, the surface of the connecting rod B is provided with an insertion hole, the surface of the sleeve rod is provided with a fixing hole, and a fixing pin is rotatably connected in the fixing hole. Here, the design of the fixing pin and the fixing hole facilitates the fixing of the connecting rod B and the sleeve rod, while the design of the insertion hole facilitates the adjustment of the length of the connecting rod B and the sleeve rod, thereby achieving the effect of adjusting the opening and closing angle of the door closer.

[0007] Preferably, a spring is sleeved on the surface of the slide rod, one end of the spring is connected to the inner surface of the slide groove, and the other end is connected to the surface of the top block. Here, the design of the spring has the effect of pressing the top block and the sleeve gasket against the limit block, thereby blocking the oil filling hole, and at the same time, it is convenient to push the top block and the sleeve gasket into the inside of the slide groove, so that the oil filling hole is exposed, which is convenient for oil filling and oil replacement of the door closer body.

[0008] Preferably, the top block and the sleeve are connected to the slide groove in a sliding manner, and the twist knob and the thread groove are connected by a thread. Here, the threaded connection design of the twist knob and the thread groove facilitates the disassembly and fixing of the rotation.

[0009] Preferably, the mounting plate A and the mounting plate B are both rotatably connected with an inserting strip, and the inserting strip is threadedly connected to the mounting plate A and the mounting plate B. Here, the threaded connection design between the inserting strip and the mounting plate A and the mounting plate B facilitates the fixing of the mounting plate A and the mounting plate B.

[0010] Preferably, the sleeve rod is rotatably connected to the mounting plate B, the soft pad is slidably connected to the limit groove, and the soft pad and the sleeve pad are made of natural rubber. Here, the natural rubber design of the soft pad and the sleeve pad enhances the sealing effect of the connection between the oil injection hole and the sleeve pad, and the sealing effect of the connection between the twist and the limit block.

[0011] Preferably, the fixing pin is connected to the fixing hole by a threaded connection, and the fixing pin is connected to the insertion hole by a sliding connection. Here, the sliding design of the fixing pin and the insertion hole facilitates the adjustment of the connecting rod B sliding in the sleeve rod and also fixes the connecting rod B and the sleeve rod.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, by arranging the slide rod, the spring, the sleeve gasket, the top block, the oil filling hole, the slide groove, the limit block, the limit groove, the twist, the thread groove and the soft pad, the effect of facilitating the oil filling and oil changing of the door closer body through the oil filling hole is achieved, and the situation that the technicians need to change the oil during the oil filling and oil changing is avoided, the efficiency of maintaining the door closer body is improved, and the maintenance cost of the door closer body is reduced. The utility model has a simple structure and strong practicality.

[0014] 2. In the utility model, the insertion hole, the fixing hole and the fixing pin are provided to facilitate the sliding adjustment of the connecting rod B and the sleeve rod, and also facilitate the fixing of the long connecting rod B and the sleeve rod, thereby adjusting the opening and closing angle of the door closer and improving the adaptability of the door closer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model provides a three-dimensional structural diagram of a door closer with convenient oil filling and oil changing;

[0016] Figure 2 The utility model provides a schematic diagram of the exploded structure of the insert strip and sleeve rod in a door closer with convenient oiling and oil changing;

[0017] Figure 3 The utility model provides a schematic diagram of the exploded structure of a slide bar, a spring, a top block, a sleeve gasket and a twist in a door closer with convenient oiling and oil changing;

[0018] Figure 4 The utility model proposes a door closer with convenient oil filling and oil changing Figure 3 Enlarged view of point A in the middle;

[0019] Figure 5 The utility model provides an exploded structural diagram of a sleeve rod and a fixing pin in a door closer with convenient oiling and oil changing.

[0020] Legend:

[0021] 1. Mounting plate A; 2. Mounting plate B; 3. Insert strip; 4. Door closer body; 5. Connecting rod A; 6. Turn block; 7. Connecting rod B; 8. Sleeve rod; 9. Slide groove; 10. Oil filling hole; 11. Limit block; 12. Limit groove; 13. Slide rod; 14. Spring; 15. Top block; 16. Sleeve gasket; 17. Threaded groove; 18. Turn knob; 19. Cushion; 20. Socket; 21. Fixing hole; 22. Fixing pin. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0024] Embodiment 1

[0025] See also Figure 1-5 The utility model provides a technical solution: a door closer convenient for refueling and changing oil, comprising a mounting plate A1 and a mounting plate B2, wherein the mounting plate A1 is internally rotatably connected with an insert strip 3, the mounting plate A1 and the mounting plate B2 are internally rotatably connected with the insert strip 3, the insert strip 3 is threadedly connected to the mounting plate A1 and the mounting plate B2, and the threaded connection design of the insert strip 3 and the mounting plate A1 and the mounting plate B2 facilitates the fixing of the mounting plate A1 and the mounting plate B2, the surface of the mounting plate A1 is fixedly mounted with a door closer body 4, the surface of the door closer body 4 is rotatably connected with a pressing connecting rod A5, the end of the connecting rod A5 away from the door closer body 4 is rotatably connected with a rotating block 6, the surface of the rotating block 6 is rotatably connected with a connecting rod B7, the interior of the connecting rod B7 is slidably connected There is a sleeve rod 8, which is rotatably connected to the mounting plate B2. A slide groove 9 is provided on the bottom surface of the door closer body 4, and an oil filling hole 10 is provided on the inner surface of the slide groove 9. A limit block 11 is fixedly installed on the bottom surface of the door closer body 4, and a limit groove 12 is provided on the surface of the limit block 11. A slide rod 13 is slidably connected inside the slide groove 9, and a spring 14 is sleeved on the surface of the slide rod 13. One end of the spring 14 is connected to the inner surface of the slide groove 9, and the other end is connected to the surface of the top block 15. The design of the spring 14 has the effect of pushing the top block 15 and the sleeve gasket 16 against the limit block 11, thereby blocking the oil filling hole 10, and also facilitates pushing the top block 15 and the sleeve gasket 16 into the inside of the slide groove 9 to expose the oil filling hole 10, which is convenient for oiling and changing the door closer body 4.

[0026] See also Figure 1-5A top block 15 is fixedly installed on the surface of the slide rod 13, and a sleeve gasket 16 is sleeved on the surface of the top block 15. The top block 15 and the sleeve gasket 16 are slidably connected to the slide groove 9. A threaded groove 17 is opened on the surface of the top block 15, and a twisting knob 18 is rotatably connected in the threaded groove 17. The twisting knob 18 and the threaded groove 17 are threadedly connected. The threaded connection design of the twisting knob 18 and the threaded groove 17 facilitates the disassembly and fixation of the rotation. A soft pad 19 is fixedly installed on the surface of the twisting knob 18, and the soft pad 19 is slidably connected to the limit groove 12. The soft pad 19 and the sleeve gasket 16 are both made of natural rubber. The natural rubber design of the soft pad 19 and the sleeve gasket 16 enhances the sealing effect of the connection between the oil filling hole 10 and the sleeve gasket 16, and the sealing effect of the connection between the twisting knob 18 and the limit block 11.

[0027] Embodiment 2

[0028] See also Figure 1-5 A socket 20 is provided on the surface of the connecting rod B7, and a fixing hole 21 is provided on the surface of the sleeve rod 8. A fixing pin 22 is rotatably connected in the fixing hole 21. The fixing pin 22 is connected to the fixing hole 21 by a threaded connection. The threaded connection design of the fixing pin 22 and the fixing hole 21 fixes the connecting rod B7 and the sleeve rod 8. The fixing pin 22 is slidably connected to the socket 20. The sliding design of the fixing pin 22 and the socket 20 facilitates the adjustment of the connecting rod B7 to slide in the sleeve rod 8, thereby adjusting the length of the connecting rod B7 and the sleeve rod 8, so that the opening and closing angle of the door closer body 4 can be increased or decreased, thereby improving the adaptability of the door closer body 4.

[0029] Working principle: When the door closer body 4 needs to be oiled, first turn the knob 18 out of the threaded groove 17, and the knob 18 will drive the cushion 19 out of the limit groove 12. After the knob 18 is turned, slide the top block 15 and the sleeve 16 into the inside of the slide groove 9. After the oil filling hole 10 is exposed, the lubricating oil inside the door closer body 4 will flow out of the door closer body 4 through the oil filling port and the slide groove 9. At this time, turn the door again to make the lubricating oil inside the door closer body 4 flow out completely, and then push the oil filling pipe into the slide groove 9. When the oil filling hole 10 is exposed, the lubricating oil can be pushed into the door closer body 4 through the oil filling pipe. After the oil filling is completed, the oil filling pipe is pulled out. At this time, the top block 15 and the sleeve gasket 16 will slide toward the limit block 11 under the elastic force of the spring 14. After the top block 15 and the sleeve gasket 16 slide to the limit block 11, the sealing of the oil filling hole 10 can be completed. At this time, the twist knob 18 is connected to the threaded groove 17 through a thread. The spring 14, the top block 15 and the sleeve 16 are designed to facilitate the oil filling and oil change of the door closer body 4 through the oil filling hole 10, avoiding the need for technicians to change the oil during oil filling and oil change, improving the efficiency of maintaining the door closer body 4, and reducing the maintenance cost of the door closer body 4. When adjusting, it is only necessary to turn out the positioning pin from the fixing hole 21, and then slide the connecting rod B7 outward inside the sleeve rod 8. After the length of the connecting rod B7 is adjusted, the fixing pin 22 is connected to the fixing hole 21 through a thread. After the fixing pin 22 slides into the socket 20, the fixing of the connecting rod B7 and the sleeve rod 8 and the adjustment of the opening and closing angle of the door closer body 4 can be completed. The design of the connecting rod B7 and the sleeve rod 8 can adjust the opening and closing angle of the door closer body 4 and improve the adaptability of the door closer body 4.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A door closer with convenient oil filling and oil changing, comprising a mounting plate A (1) and a mounting plate B (2), characterized in that: The mounting plate A (1) is internally rotatably connected with an insert strip (3), a door closer body (4) is fixedly mounted on the surface of the mounting plate A (1), a connecting rod A (5) is rotatably connected to the surface of the door closer body (4), an end of the connecting rod A (5) away from the door closer body (4) is rotatably connected with a rotating block (6), a surface of the rotating block (6) is rotatably connected with a connecting rod B (7), a sleeve rod (8) is slidably connected to the interior of the connecting rod B (7), a sliding groove (9) is provided on the bottom surface of the door closer body (4), and an inner surface of the sliding groove (9) is provided with a An oil filling hole (10) is provided, a limit block (11) is fixedly installed on the bottom surface of the door closer body (4), a limit groove (12) is provided on the surface of the limit block (11), a slide rod (13) is slidably connected inside the slide groove (9), a top block (15) is fixedly installed on the surface of the slide rod (13), a sleeve pad (16) is sleeved on the surface of the top block (15), a thread groove (17) is provided on the surface of the top block (15), a twist knob (18) is rotatably connected in the thread groove (17), and a soft pad (19) is fixedly installed on the surface of the twist knob (18).

2. The door closer with convenient oil filling and oil changing according to claim 1, characterized in that: The surface of the connecting rod B (7) is provided with an insertion hole (20), the surface of the sleeve rod (8) is provided with a fixing hole (21), and a fixing pin (22) is rotatably connected in the fixing hole (21).

3. The door closer with convenient oil filling and oil changing according to claim 1, characterized in that: A spring (14) is sleeved on the surface of the slide rod (13), one end of the spring (14) is connected to the inner surface of the slide groove (9), and the other end is connected to the surface of the top block (15).

4. The door closer with convenient oil filling and oil changing according to claim 1, characterized in that: The top block (15) and the sleeve (16) are slidably connected to the slide groove (9), and the turning knob (18) and the thread groove (17) are threadedly connected.

5. The door closer with convenient oil filling and oil changing according to claim 1 is characterized in that: The interiors of the mounting plate A (1) and the mounting plate B (2) are both rotatably connected with an inserting strip (3), and the inserting strip (3) is connected to the mounting plate A (1) and the mounting plate B (2) via threads.

6. The door closer with convenient oil filling and oil changing according to claim 1, characterized in that: The sleeve rod (8) and the mounting plate B (2) are rotationally connected, the soft pad (19) and the limiting groove (12) are slidingly connected, and the soft pad (19) and the sleeve pad (16) are both made of natural rubber.

7. The door closer with convenient oil filling and oil changing according to claim 2, characterized in that: The fixing pin (22) is slidably connected to the fixing hole (21), and the fixing pin (22) is slidably connected to the insertion hole (20).

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