A concealed door closer

Abstract

The utility model belongs to door closer technical field provides a kind of hidden door closer, including fixed part and rotating cylinder component, and the rotating cylinder component is correspondingly set in the outside of the fixed part;The fixed part includes fixed shaft, rotating table, torsion spring, connecting sleeve, damper shaft, threaded shaft, spiral sleeve and sliding shaft;The rotating cylinder component includes upper sleeve, rotating bearing and rotating sleeve, and the outer wall of the upper sleeve is provided with opening;The outer wall of the rotating table is provided with mounting blind hole, the upper end of the mounting blind hole is provided with adjusting rod, one end of the adjusting rod is correspondingly inserted into the mounting blind hole, and the other end of the adjusting rod is arranged opposite to the opening.The utility model provides a kind of hidden door closer, when opening door, personnel uses smaller force to easily push open the door, save time and labour when operating, and it is practical.

Description

TECHNICAL FIELD

[0001] The utility model relates to door closer technical field, concretely relates to a hidden door closer. BACKGROUND

[0002] The door closer is a hydraulic device similar to a spring on the door head, which can automatically close the door after being compressed and released when the door is opened, has the function of a spring door, and can ensure that the door is accurately and timely closed to the initial position. The significance of the door closer lies not only in automatically closing the door, but also in protecting the door frame and door body (smooth closing), and more importantly, the door closer has become an indispensable part of the intelligent management of modern buildings.

[0003] At present, the doors are all installed with the door closers, and the initial stage of opening the door is very light, and with the angle of opening the door becoming larger and larger, the resistance when opening the door will become larger and larger, especially for the large specification door, the personnel is time-consuming and laborious, and even cannot push open the door, and the practicability is poor. CONTENT OF THE UTILITY MODEL

[0004] In view of the defects in the prior art, the utility model provides a hidden door closer, which can easily push open the door with small force when opening the door, saves time and labor during operation, and has strong practicability.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A hidden door closer, comprising a fixed part and a rotating cylinder assembly, and the rotating cylinder assembly is correspondingly sleeved on the outside of the fixed part;

[0007] The fixed part comprises a fixed shaft, a rotating table, a torsion spring, a connecting sleeve, a damper shaft, a threaded shaft, a spiral sleeve and a sliding shaft, both ends of the fixed shaft are sleeved with the rotating table and the connecting sleeve respectively, and both ends of the torsion spring are connected with the rotating table and the connecting sleeve respectively;

[0008] One end of the damper shaft is correspondingly arranged in the connecting sleeve, the lower end of the damper shaft is provided with the threaded shaft, one end of the spiral sleeve is correspondingly sleeved on the outer wall of the threaded shaft, and one end of the sliding shaft is correspondingly inserted into the other end of the spiral sleeve;

[0009] The rotating cylinder assembly comprises an upper sleeve, a rotating bearing and a rotating sleeve, the rotating bearing is arranged at the end of the inner wall of the upper sleeve, and the upper sleeve and the rotating sleeve are detachably connected;

[0010] One end of the fixed shaft correspondingly penetrates the rotating bearing, the outer wall of the upper sleeve is provided with an opening, and the rotating table is arranged opposite to the opening;

[0011] The outer wall of the rotating table is provided with a mounting blind hole, the upper end of the mounting blind hole is provided with an adjusting rod, one end of the adjusting rod is inserted into the mounting blind hole, and the other end of the adjusting rod is arranged opposite to the opening.

[0012] As an improved technical solution, the mounting blind hole is provided with a plurality of mounting blind holes, and the mounting blind holes are arranged in an array around the rotating table.

[0013] As an improved technical solution, the bottom of the spiral sleeve is provided with a one-way valve, and the inner wall of the one-way valve is provided with an oil conveying groove.

[0014] As an improved technical solution, the end of the one-way valve is provided with an adjusting ball, and the adjusting ball is arranged at the end of the oil conveying groove.

[0015] As an improved technical solution, the end of the sliding shaft is provided with a sliding base, the middle end of the sliding base is provided with a through hole, and a sealing column is arranged in the through hole.

[0016] As an improved technical solution, the upper part of the fixed shaft is provided with a placing frame, the upper part of the placing frame is provided with a lower fixed block, and the upper end of the lower fixed block is provided with a lower placing arc.

[0017] The upper part of the lower fixed block is provided with an upper fixed block, and the lower end of the upper fixed block is provided with an upper placing arc.

[0018] As an improved technical solution, the outer wall of the lower fixed block is provided with a threaded blind hole, the side of the upper fixed block is provided with a mounting hole, and the upper part of the mounting hole is provided with a locking screw.

[0019] Due to the above technical scheme, the utility model has the following beneficial effects:

[0020] 1. The hidden door closer, by setting the fixed part and the rotating cylinder assembly, ensures that the door can be easily pushed open with small force when opening, saves time and effort during operation, and has high practicality.

[0021] 2. The hidden door closer, by setting the adjusting rod, facilitates the connection between the upper sleeve and the rotating table.

[0022] 3. The hidden door closer, by setting a plurality of mounting blind holes, facilitates the control of the installation position of the adjusting rod according to the size of the door, and ensures that the smallest force is used when opening.

[0023] 4. The hidden door closer, by setting the lower fixed block and the upper fixed block, facilitates the fixation of the fixed shaft. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings required to be used in the description of the specific embodiments or the prior art will be briefly introduced. In all the drawings, similar elements or parts are generally identified by similar reference signs. In the drawings, the elements or parts are not necessarily drawn according to the actual proportions.

[0025] Figure 1 It is a schematic view of a hidden door closer structure;

[0026] Figure 2 It is a schematic view of the upper end structure of the fixed part;

[0027] Figure 3 It is a schematic view of the upper sleeve structure;

[0028] Figure 4 It is a schematic view of the lower end structure of the fixed part;

[0029] Figure 5 It is a schematic view of the spiral sleeve installation;

[0030] Figure 6 It is a schematic view of the one-way valve installation;

[0031] Figure 7 It is a schematic view of the placement frame installation.

[0032] In the drawings, 1, fixed part, 11, fixed shaft, 12, rotating table, 13, torsion spring, 14, connecting sleeve, 15, damper shaft, 16, threaded shaft, 17, spiral sleeve, 18, sliding shaft, 19, sliding base, 191, through hole, 192, sealing column, 2, rotating cylinder assembly, 21, upper sleeve, 211, opening, 22, rotating bearing, 23, rotating sleeve, 3, installation blind hole, 31, adjusting rod, 4, one-way valve, 41, oil groove, 42, adjusting ball, 5, placement frame, 51, lower fixed block, 511, placement arc, 512, threaded blind hole, 52, upper fixed block, 521, upper placement arc, 522, installation hole, 6, locking screw. DETAILED DESCRIPTION

[0033] The technical solutions of the present application will be described in detail below in combination with specific embodiments. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0034] As Figures 1-7 shown, the present application provides a hidden door closer, which comprises a fixed part 1 and a rotating cylinder assembly 2, and the rotating cylinder assembly 2 is correspondingly sleeved on the outside of the fixed part 1.

[0035] The fixed part 1 comprises a fixed shaft 11, a rotating table 12, a torsion spring 13, a connecting sleeve 14, a damper shaft 15, a threaded shaft 16, a spiral sleeve 17 and a sliding shaft 18, the upper part of the fixed shaft 11 is provided with a placing frame 5, the upper part of the placing frame 5 is provided with a lower fixed block 51, the upper end of the lower fixed block 51 is provided with a lower placing arc 511;

[0036] The upper part of the lower fixed block 51 is correspondingly provided with an upper fixed block 52, the lower end of the upper fixed block 52 is provided with an upper placing arc 521, when assembled, one end of the fixed shaft 11 is correspondingly inserted between the lower placing arc 511 and the upper placing arc 521;

[0037] The outer wall of the lower fixed block 51 is provided with a threaded blind hole 512, the side of the upper fixed block 52 is provided with a mounting hole 522, and the upper part of the mounting hole 522 is provided with a locking screw 6;

[0038] The two ends of the fixed shaft 11 are respectively sleeved with the rotating table 12 and the connecting sleeve 14, and the two ends of the torsion spring 13 are respectively connected with the rotating table 12 and the connecting sleeve 14.

[0039] One end of the damper shaft 15 is correspondingly arranged in the connecting sleeve 14, the lower end of the damper shaft 15 is provided with the threaded shaft 16, one end of the spiral sleeve 17 is correspondingly sleeved on the outer wall of the threaded shaft 16, and one end of the sliding shaft 18 is correspondingly inserted into the other end of the spiral sleeve 17.

[0040] The end of the sliding shaft 18 is provided with a sliding base 19, the middle end of the sliding base 19 is provided with a through hole 191, the through hole 191 is provided with a sealing column 192, and hydraulic oil is added through the through hole 191.

[0041] The rotating cylinder assembly 2 comprises an upper sleeve 21, a rotating bearing 22 and a rotating sleeve 23, the rotating bearing 22 is arranged at the end of the inner wall of the upper sleeve 21, and the upper sleeve 21 and the rotating sleeve 23 are detachably connected.

[0042] One end of the fixed shaft 11 correspondingly penetrates the rotating bearing 22; the outer wall of the upper sleeve 21 is provided with an opening 211, and the rotating table 12 is arranged opposite to the opening 211.

[0043] The outer wall of the rotating table 12 is provided with a mounting blind hole 3, the upper end of the mounting blind hole 3 is provided with an adjusting rod 31, one end of the adjusting rod 31 is correspondingly inserted into the mounting blind hole 3, and the other end of the adjusting rod 31 is arranged opposite to the opening 211; the adjusting rod 31 is arranged to facilitate the connection of the upper sleeve 21 and the rotating table 12.

[0044] There are a plurality of mounting blind holes 3, and the mounting blind holes 3 are arranged in an array around the rotating table 12; a plurality of mounting blind holes 3 are arranged to facilitate the installation position of the adjusting rod 31 according to the size of the door, so as to ensure that the least force is used when opening the door.

[0045] The bottom of the spiral sleeve 17 is provided with a one-way valve 4, and the inner wall of the one-way valve 4 is provided with an oil conveying groove 41;

[0046] The end of the one-way valve 4 is provided with an adjusting ball 42, and the adjusting ball 42 is correspondingly arranged at the end of the oil conveying groove 41;

[0047] The flow process of the hydraulic oil in the door opening process of the utility model is as follows:

[0048] When the door is opened, the internal hydraulic oil enters the remaining space in the upper part of the rotating sleeve 23 from bottom to top through the one-way valve 4, at this time, the adjusting ball 42 does not limit the one-way valve 4; on the contrary, when the door is closed, the internal hydraulic oil enters the remaining space in the lower part of the rotating sleeve 23 from top to bottom through the one-way valve 4, at this time, the adjusting ball 42 limits the one-way valve 4, so that the closing speed is adjusted, and the influence of the too fast closing speed on the safety of personnel is prevented;

[0049] The use process of the hidden door closer is as follows:

[0050] When installing, one end of the fixed shaft 11 is correspondingly inserted between the lower placement arc 511 and the upper placement arc 521, and the upper fixed block 52 and the lower fixed block 51 are connected through the locking screw 6, so that the fixed installation of the fixed shaft 11 is completed;

[0051] When the personnel open the door, the operation is divided into two steps:

[0052] First step: the upper sleeve 21 is driven to rotate, and the rotating table 12 is pushed to rotate along the fixed shaft 11 through the adjusting rod 31 during the rotation of the upper sleeve 21, and the torsional spring 13 is twisted during the rotation of the rotating table 12, and the strong torsion is generated when the torsional spring 13 is twisted, until the personnel completes the entire door opening operation;

[0053] Second step: the upper sleeve 21 is rotated to drive the rotating sleeve 23 to rotate, the rotating sleeve 23 drives the sliding base 19 to rotate during the rotation, the sliding base 19 drives the sliding shaft 18 to rotate, and the sliding shaft 18 drives the spiral sleeve 17 to move downward along the threaded shaft 16, until the personnel completes the entire door opening operation;

[0054] After the personnel pass through the door, the torsion generated when the torsional spring 13 is twisted is reversed to push the rotating table 12, and the rotating table 12 is rotated when being pushed, and the upper sleeve 21 is reversely rotated through the adjusting rod 31 during the rotation of the rotating table 12, until the torsion generated by the torsional spring 13 disappears;

[0055] At the same time when the above operation is carried out, the sleeve 21 is reversely rotated to drive the rotating sleeve 23 to reversely rotate, the rotating sleeve 23 drives the sliding base 19 to reversely rotate when rotating, the sliding base 19 drives the sliding shaft 18 to rotate, the sliding shaft 18 drives the spiral sleeve 17 to move upward along the threaded shaft 16 until the spiral sleeve 17 returns to the initial position, and the whole door closing operation is completed.

[0056] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application.

Claims

1. A concealed door closer, characterized in that: It includes a fixed part and a rotating cylinder assembly, wherein the rotating cylinder assembly is correspondingly sleeved on the outside of the fixed part; The fixing part includes a fixed shaft, a rotating platform, a torsion spring, a connecting sleeve, a damper shaft, a threaded shaft, a spiral sleeve, and a sliding shaft. The rotating platform and the connecting sleeve are respectively sleeved on both ends of the fixed shaft, and the two ends of the torsion spring are respectively connected to the rotating platform and the connecting sleeve. One end of the damper shaft is correspondingly disposed inside the connecting sleeve, the lower end of the damper shaft is provided with the threaded shaft, one end of the spiral sleeve is correspondingly sleeved on the outer wall of the threaded shaft, and one end of the sliding shaft is correspondingly inserted into the other end of the spiral sleeve. The rotating cylinder assembly includes an upper sleeve, a rotating bearing, and a rotating sleeve. The rotating bearing is disposed at the end of the inner wall of the upper sleeve, and the upper sleeve and the rotating sleeve are detachably connected. One end of the fixed shaft passes through the rotating bearing; the outer wall of the upper sleeve is provided with an opening, and the rotating platform is arranged opposite to the opening; The outer wall of the rotating platform is provided with a blind mounting hole. An adjusting rod is provided at the upper end of the blind mounting hole. One end of the adjusting rod is inserted into the blind mounting hole, and the other end of the adjusting rod is positioned opposite to the opening.

2. The concealed door closer according to claim 1, characterized in that: The mounting blind holes are provided in a plurality of manner, and are arranged in a surrounding array around the rotating platform.

3. A concealed door closer according to claim 1, characterized in that: A one-way valve is provided at the bottom of the spiral sleeve, and an oil delivery groove is provided on the inner wall of the one-way valve.

4. A concealed door closer according to claim 3, characterized in that: An adjusting ball is provided at the end of the one-way valve, and the adjusting ball is correspondingly provided at the end of the oil delivery tank.

5. A concealed door closer according to claim 1, characterized in that: A sliding base is provided at the end of the sliding shaft, a through hole is provided at the middle end of the sliding base, and a sealing column is provided in the through hole.

6. A concealed door closer according to claim 1, characterized in that: A placement frame is provided on the upper part of the fixed shaft, a lower fixing block is provided on the upper part of the placement frame, and a lower placement arc is provided on the upper end of the lower fixing block; The upper fixing block is correspondingly provided on the upper part of the lower fixing block, and the lower end of the upper fixing block is provided with an upper placement arc.

7. A concealed door closer according to claim 6, characterized in that: The lower fixing block has a threaded blind hole on its outer wall, and the upper fixing block has a through mounting hole on its side; a locking screw is provided at the top of the mounting hole.

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