Delayed reset rotating mechanism

Abstract

The invention discloses a delayed reset rotating mechanism which comprises a fixing seat, a sliding block is arranged in the fixing seat in a sliding mode, a door closing spring is arranged at one end of the sliding block, and the other end of the sliding block is matched with a cam of a rotating shaft. The sliding block is provided with a locking block, and the locking block is provided with an ejection component. A locking column is movably arranged in the mounting groove above the fixed seat, an unlocking driving assembly is arranged on the fixed seat, and the unlocking driving assembly comprises a compression spring, a pushing block and an unlocking damper; one end of the pushing block is connected to a piston rod of the unlocking damper, the other end of the pushing block abuts against the compression spring, and the pushing block abuts against the locking block and is matched with the ejection component. The rotating shaft drives the cam to push the sliding block to drive the locking block to slide, and the locking block is matched with the locking column to lock the sliding block. The pushing block is driven by the compression spring to move backwards to push the ejection component to penetrate out of the locking block to be matched with the locking column, so that the locking block is separated from the locking column, and delayed door closing of the door leaf is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of door closers, and more particularly to a rotating mechanism with delayed resetting. Background Art

[0002] The door closer is a spring-like hydraulic device on the door head. When the door is opened, it can be compressed and then released to automatically close the door. It acts like a spring door and can ensure that the door is closed to its initial position accurately and promptly after being opened.

[0003] When people open and release the door leaf, the existing door closer will quickly push the door leaf in the opposite direction to close it, affecting people's normal entry and exit, especially affecting places such as conference rooms and offices with frequent entry and exit, especially special groups such as the elderly and children. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention aims to provide a rotating mechanism with delayed reset.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A delayed reset rotation mechanism comprises a fixed seat rotatably provided with a rotating shaft; a slider is provided in the fixed seat for sliding back and forth, one end of the slider is provided with a door closing spring, and the other end cooperates with a cam on the rotating shaft;

[0007] The slider is provided with a locking block, the locking block is provided with an ejection member, and a locking column is movably provided in the mounting groove above the fixing seat;

[0008] The fixing seat is provided with an unlocking driving assembly for driving the ejection member to move upward, and the unlocking driving assembly includes a compression spring, an unlocking damper and a pushing block placed under the ejection member;

[0009] One end of the push block is connected to the piston rod of the unlocking damper, and the other end abuts against the compression spring. The push block abuts against the locking block and cooperates with the ejection member;

[0010] The cam rotates with the rotating shaft, pushing the slider to drive the locking block to slide backward and compress the door closing spring. The locking block cooperates with the locking column to lock the slider; at this time, the compression spring drives the pushing block to overcome the resistance of the unlocking damper and move toward the ejection member. The pushing block pushes the upper end of the ejection member to pass through the locking block and cooperate with the locking column, so that the locking block is separated from the locking column, and the slider slides forward under the push of the door closing spring.

[0011] The present invention further provides that: the ejection member includes a swinging piece swingably arranged on the locking block and an unlocking block movably arranged on the fixed seat, the upper end of the unlocking block is inclinedly provided with an extrusion surface, and the lower end thereof cooperates with the swinging piece;

[0012] The pushing block pushes the swing member backward, driving the upper end of the swing member to push the unlocking block upward, and the extrusion surface presses the locking column upward, so that the locking block is separated from the locking column.

[0013] The present invention further provides that: a limiting groove adapted to the unlocking block is provided on the fixing seat, and the limiting groove enables the unlocking block to move vertically upward under the push of the swinging member.

[0014] The present invention further provides that: the installation groove is provided on the end cover of the fixing seat, and the installation groove gradually becomes deeper from front to back;

[0015] An elastic member is provided in the mounting groove and is arranged on the rear side of the locking column;

[0016] The unlocking block pushes the locking column to move toward the rear end of the installation slot, and the locking column presses the elastic member backward.

[0017] The present invention further provides that: the elastic member is a foam rubber block.

[0018] The present invention further provides that: the pushing block is provided with a flange protruding upward, and the rear end of the flange is provided with a guide surface inclined;

[0019] The pushing block is driven by the compression spring, and the flange presses the upper end of the unlocking block upwards to extend the locking block and cooperate with the locking column.

[0020] The present invention further provides that: the sliding block is connected to a buffer damper at one end away from the door closing spring, and the buffer damper prevents the sliding block from sliding forward and backward.

[0021] The present invention further provides that: three positioning grooves are provided on the cam, and a positioning block adapted to the positioning grooves is provided on the slider, and the positioning block cooperates with the positioning grooves to prevent the rotating shaft from rotating.

[0022] The present invention further provides that: a moving groove is opened on the slider, and the rotating shaft is passed through the moving groove; the slider slides back and forth, and the rotating shaft moves relatively in the moving groove.

[0023] The present invention is further provided with bearings at the upper and lower ends of the rotating shaft.

[0024] The door closer of the present invention has the following beneficial effects: the delayed door closer comprises a fixed seat rotatably provided with a rotating shaft; a slider is provided in the fixed seat for sliding back and forth, one end of the slider is provided with a door-closing spring, and the other end cooperates with a cam on the rotating shaft; a locking block is provided on the slider, and a knockout member is provided on the locking block, and a locking post is movably provided in the mounting groove above the fixed seat; when the door is opened, the door leaf drives the rotating shaft to rotate, and the cam of the rotating shaft drives the slider to slide backward, compressing the door-closing spring, and the locking block will cooperate with the locking post after sliding backward with the slider to lock the slider; after the door is opened, the slider immediately slides forward driven by the door-closing spring, and the locking block slides forward with the locking post, and the locking post will abut against the front side wall of the mounting groove, preventing the locking block from continuing to slide forward, so that the rotating shaft is locked in the door-opening position. The locking block is then released and the door is automatically closed by the closing spring, thereby realizing the delayed door closing function. In particular, in places with frequent access, such as conference rooms and offices, it is convenient for people to enter and exit normally, and it is also convenient for special groups such as the elderly and children to enter and exit normally closed doors. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of a rotating mechanism with delayed reset according to the present invention;

[0026] Figure 2 This is a schematic diagram of the internal structure of a rotating mechanism with delayed reset according to the present invention;

[0027] Figure 3 A cross-sectional view of a rotating mechanism with delayed reset according to the present invention;

[0028] Figure 4 This is a diagram showing the coordination between a slider and a rotating shaft for delayed door closing according to the present invention;

[0029] Figure 5 This is a diagram of the installation of an unlocking block on a locking block for delayed door closing according to the present invention;

[0030] Figure 6 This is a diagram showing the coordination between a push block and an unlocking block for a delayed door closing system of the present invention;

[0031] Figure 7 This is a diagram showing the coordination between a protrusion and a positioning block for delaying door closing according to the present invention;

[0032] Figure 8 This is a structural schematic diagram of a fixing seat for delayed door closing according to the present invention;

[0033] Explanation of the accompanying drawings: 1. Fixed seat; 11. Rotating shaft; 111. Cam; 1111. Positioning groove; 12. End cover; 121. Mounting groove; 13. Limiting groove; 2. Slider; 21. Door closing spring; 22. Buffer damper; 23. Positioning block; 24. Moving groove; 3. Locking block; 4. Ejection member; 41. Swinging member; 42. Unlocking block; 421. Extrusion surface; 5. Locking column; 6. Unlocking drive assembly; 61. Compression spring; 62. Pushing block; 621. Abutment plate; 622. Flange; 63. Unlocking damper; 7. Elastic member; 8. Bearing. DETAILED DESCRIPTION

[0034] Refer to the attached Figures 1 to 8 A rotating mechanism with delayed reset of the present invention is described in further detail.

[0035] A delayed reset rotation mechanism includes a fixed base 1 rotatably provided with a rotating shaft 11; a slider 2 is provided in the fixed base 1 for sliding back and forth, one end of the slider 2 is provided with a door closing spring 21, and the other end cooperates with a cam 111 on the rotating shaft 11;

[0036] The slider 2 is provided with a locking block 3, and the locking block 3 is provided with an ejection member 4. A locking column 5 is movably provided in the mounting groove 121 above the fixing seat 1;

[0037] The fixing base 1 is provided with an unlocking drive assembly 6 for driving the ejection member 4 to move upward. The unlocking drive assembly 6 includes a compression spring 61, a push block 62 disposed below the ejection member 4, and an unlocking damper 63. The locking block 3 is provided with an opening for the push block 62 to pass through, so that the push block 62 can move forward and backward relative to the locking block 3.

[0038] One end of the push block 62 is connected to the piston rod of the unlocking damper 63, and the other end abuts against the compression spring 61. The push block 62 abuts against the locking block 3 and cooperates with the ejection member 4;

[0039] When the door is opened, the door leaf drives the rotating shaft 11 to rotate, and the cam 111 rotates with the rotating shaft 11, which will push the slider 2 to drive the locking block 3 to slide backward and compress the door closing spring 21. The locking block 3 will cooperate with the locking column 5 to lock the slider 2; specifically, after the door is opened, the slider 2 immediately slides forward under the drive of the door closing spring 21, and the locking block 3 slides forward with the locking column 5, and the locking column 5 will quickly abut the front side wall of the mounting groove 121, preventing the locking block 3 from continuing to slide forward, so that the rotating shaft is locked in the door opening position; in the process of the slider 2 sliding backward, the locking block 3 separates from the pushing block 62, and the pushing block 62 slides forward under the drive of the compression spring 61. At this time, the compression spring 61 drives the pushing block 62 to overcome the resistance of the unlocking damper to eject the member 4 The unlocking damper 63 prevents the pushing block 62 from sliding backward, so that the pushing block 62 slides backward slower than the speed at which the locking block 3 slides backward; after the pushing block 62 slides into place, the pushing block 62 pushes the upper end of the ejecting member 4 to pass through the locking block 3 and cooperate with the locking column 5, so that the locking block 3 is separated from the locking column 5, and the slider 2 slides forward under the push of the door closing spring 21, thereby realizing the closing of the door leaf; in this process, after the door leaf is opened, it will remain in the open state for a period of time under the action of the delayed door closer, and then automatically close the door under the drive of the door closing spring 21, thereby realizing the delayed door closing function; especially in places with frequent entry and exit such as conference rooms and offices, it is convenient for people to enter and exit normally, and it is also convenient for special groups such as the elderly and children to enter and exit normally closed doors.

[0040] The ejection member 4 includes a swinging member 41 swingably mounted on the locking block 3 and an unlocking block 42 movably mounted on the fixing seat 1. The unlocking block 42 has an obliquely disposed extrusion surface 421 at its upper end, and its lower end cooperates with the swinging member 41. The fixing seat 1 is provided with a limiting groove 13 adapted to the unlocking block 42. The limiting groove 13 enables the unlocking block 42 to move vertically upward under the push of the swinging member 41.

[0041] The pushing block 62 pushes the swinging member 41 backward, driving the upper end of the swinging member 41 to push the unlocking block 42 upward. The unlocking block 42 moves vertically upward, and the extrusion surface 421 presses the locking column 5 upward, so that the locking block 3 is separated from the locking column 5, thereby unlocking the slider; thereby, the slider 2 is pushed forward by the door closing spring 21, and the door leaf is automatically closed.

[0042] The swing axis of the swing member 41 is arranged at one end biased toward the unlocking block 42 , so that the pushing block 62 can more easily push the unlocking block 42 to move upward through the swing member 41 .

[0043] The mounting groove 121 is provided on the end cover 12 of the fixing seat 1, and the mounting groove 121 gradually deepens from front to back; an elastic member 7 is provided in the mounting groove 121, and the elastic member 7 is a foam rubber block, and the elastic member 7 is provided on the rear side of the locking column 5; the unlocking block 42 pushes the locking column 5 to move toward the rear end of the mounting groove 121, and the locking column 5 squeezes the elastic member 7 backward; when the upper end surface of the unlocking member is separated from the locking column 5, the locking column 5 moves back to the front end of the mounting groove 121 under the elastic action of the elastic member 7 to achieve reset.

[0044] The front end of the pushing block 62 is provided with a supporting plate 621, one side of the supporting plate 621 is against the locking block 3, and the other side is against the compression spring 61; driven by the door closing spring 21, the locking block 3 slides forward with the slider 2, and the supporting plate 621 compresses the compression spring 61 forward, so that the compression spring 61 stores energy.

[0045] The slider 2 is connected to a buffer damper 22 at one end away from the door closing spring 21, and the buffer damper 22 prevents the slider 2 from sliding forward and backward; when the door leaf is opened, the cam 111 drives the slider 2 to slide backward, and the buffer damper 22 prevents the slider 2 from sliding backward; when the door leaf is closed, the door closing spring 21 drives the slider 2 to slide forward, and the buffer damper 22 prevents the slider 2 from sliding forward, thereby playing a damping role.

[0046] The cam 111 is provided with three positioning grooves 1111, wherein the three positioning grooves 1111 are respectively arranged at 90 degrees, 0 degrees and negative 90 degrees; the slider 2 is provided with a positioning block 23 adapted to the positioning groove 1111, and the positioning block 23 cooperates with the positioning groove 1111 to prevent the rotating shaft 11 from rotating, thereby realizing the positioning of the door leaf.

[0047] A movable groove 24 is provided on the slider 2, and the rotating shaft 11 is inserted into the movable groove 24; the slider 2 slides back and forth, and the rotating shaft 11 moves relatively in the movable groove 24; bearings 8 are provided at the upper and lower ends of the rotating shaft 11, so that the rotating shaft 11 can rotate more smoothly.

[0048] The unlocking damper 63 and the buffer damper 22 are adjustable, and the preload force of the door closing spring 21 is adjustable. The above adjustments can adjust the door closing speed and the residence time of the door at any position after opening.

[0049] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A delayed reset rotation mechanism, comprising a fixed seat rotatably provided with a rotating shaft; wherein: A slider is provided in the fixed seat to slide back and forth, one end of the slider is provided with a door closing spring, and the other end cooperates with a cam on the rotating shaft; The slider is provided with a locking block, the locking block is provided with an ejection member, and a locking column is movably provided in the mounting groove above the fixing seat; The fixing seat is provided with an unlocking driving assembly for driving the ejection member to move upward, and the unlocking driving assembly includes a compression spring, an unlocking damper and a pushing block placed under the ejection member; One end of the push block is connected to the piston rod of the unlocking damper, and the other end abuts against the compression spring. The push block abuts against the locking block and cooperates with the ejection member; The cam rotates with the rotating shaft, pushing the slider to drive the locking block to slide backward and compress the door closing spring. The locking block cooperates with the locking column to lock the slider; at this time, the compression spring drives the pushing block to overcome the resistance of the unlocking damper and move toward the ejection member. The pushing block pushes the upper end of the ejection member to pass through the locking block and cooperate with the locking column, so that the locking block is separated from the locking column, and the slider slides forward under the push of the door closing spring.

2. The door closer with delayed closing according to claim 1, characterized in that: The ejection member includes a swinging piece swingably arranged on the locking block and an unlocking block movably arranged on the fixed seat, the upper end of the unlocking block is inclinedly provided with an extrusion surface, and the lower end thereof cooperates with the swinging piece; The pushing block pushes the swing member backward, driving the upper end of the swing member to push the unlocking block upward, and the extrusion surface presses the locking column upward, so that the locking block is separated from the locking column.

3. The door closer with delayed closing according to claim 2, characterized in that: The fixing seat is provided with a limiting groove adapted to the unlocking block, and the limiting groove enables the unlocking block to move vertically upwards under the push of the swinging member.

4. The delayed reset rotation mechanism according to claim 3, characterized in that: The mounting groove is provided on the end cover of the fixing seat, and the mounting groove gradually becomes deeper from front to back; An elastic member is provided in the mounting groove and is arranged on the rear side of the locking column; The unlocking block pushes the locking column to move toward the rear end of the installation slot, and the locking column presses the elastic member backward.

5. The delayed reset rotation mechanism according to claim 4, characterized in that: The elastic member is a foam rubber block.

6. A delayed reset rotation mechanism according to claim 1, 2, 3, 4 or 5, characterized in that: The pushing block is provided with a flange protruding upward, and a guide surface is provided at an inclined rear end of the flange; The pushing block is driven by the compression spring, and the flange presses the upper end of the unlocking block upwards to extend the locking block and cooperate with the locking column.

7. A delayed reset rotation mechanism according to claim 1, 2, 3, 4 or 5, characterized in that: The end of the slider away from the door closing spring is connected with a buffer damper, which prevents the slider from sliding forward and backward.

8. A delayed reset rotation mechanism according to claim 1, 2, 3, 4 or 5, characterized in that: The cam is provided with three positioning grooves, and the slider is provided with positioning blocks adapted to the positioning grooves. The positioning blocks cooperate with the positioning grooves to prevent the rotating shaft from rotating.

9. The delayed reset rotation mechanism according to claim 8, characterized in that: The slider is provided with a moving groove, and the rotating shaft is passed through the moving groove; the slider slides back and forth, and the rotating shaft moves relatively in the moving groove.

10. The delayed reset rotation mechanism according to claim 9, characterized in that: Bearings are sleeved on the upper and lower ends of the rotating shaft.

Images