A rotary mechanism with a time delay reset

Abstract

The utility model discloses a rotation mechanism of time delay reset, including fixed base, the fixed base inside slide has the sliding block, and this sliding block one end part sets the door closing spring, and the other end cooperates with the cam of rotation axis, the sliding block is equipped with the locking block, and the locking block is equipped with the ejection component, the movable locking column of the fixed base top installation groove is equipped with, and the fixed base top is equipped with the unlocking drive component, and the unlocking drive component includes compression spring, push block and unlocking damper, push block one end part is connected in the piston rod of unlocking damper, and the other end part is in abutment with compression spring, and push block abuts at the locking block and ejection component cooperation, rotation axis drive cam push sliding block drive locking block sliding, locking block cooperates with locking column and locks sliding block, push block moves to the back under the drive of compression spring, and pushes ejection component and passes out locking block and locking column cooperation, makes locking block and locking column separate, realizes the door leaf time delay closing.

Description

Technical Field

[0001] This utility model relates to the field of door closer technology, and more specifically, to a delayed reset rotating mechanism. Background Technology

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

[0003] When people open and release the door, the existing door closer will quickly push the door back to close, affecting people's normal entry and exit, especially in frequently used places such as conference rooms and offices; and particularly affecting special groups such as the elderly and children. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a rotation mechanism with delayed reset.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A delayed reset rotating mechanism includes a fixed seat rotatably provided with a rotating shaft; a slider is slidably disposed in the fixed seat, one end of the slider is provided with a 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 ejector component, and a locking post is movably provided in the mounting groove above the fixed seat;

[0008] The fixed base is provided with an unlocking drive assembly that drives the ejector component to move upward. The unlocking drive assembly includes a compression spring, an unlocking damper, and a push block located below the ejector component.

[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 the ejector component.

[0010] The cam rotates with the rotating shaft, which pushes the slider to move the locking block backward to compress the closing spring. The locking block will cooperate with the locking post to lock the slider. At this time, the compression spring drives the push block to overcome the resistance of the unlocking damper and move towards the ejector. The push block pushes the upper end of the ejector to pass through the locking block and cooperate with the locking post, so that the locking block and the locking post are separated. The slider slides forward under the push of the closing spring.

[0011] The present invention further comprises: the ejector component including a swinging member swinging on the locking block and an unlocking block movably mounted on the fixed base; the upper end of the unlocking block is inclinedly provided with a pressing surface, and its lower end cooperates with the swinging member.

[0012] The pushing block pushes the swinging member backward, causing the upper end of the swinging member to push the unlocking block upward, and the pressing surface presses the locking post upward, causing the locking block to separate from the locking post.

[0013] The present invention further includes a limiting groove on the fixed base that is adapted to the unlocking block, the limiting groove causing the unlocking block to move vertically upward under the push of the swinging component.

[0014] The present invention is further provided in that: the mounting groove is provided on the end cover of the fixed base, and the mounting groove gradually becomes deeper from front to back;

[0015] An elastic element is provided in the mounting groove, and the elastic element is located on the rear side of the locking post.

[0016] The unlocking block pushes the locking pin toward the rear end of the mounting slot, and the locking pin presses the elastic element backward.

[0017] The present invention further comprises: the elastic element being a foam block.

[0018] The present invention is further provided with: the pushing block is provided with an upwardly protruding flange, and the rear end of the flange is provided with a guide surface at an inclination;

[0019] Driven by the compression spring, the flange of the push block will push the upper end of the unlocking block to extend out of the locking block and cooperate with the locking post.

[0020] The present invention further includes a buffer damper connected to the end of the slider away from the closing spring, which prevents the slider from sliding back and forth.

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

[0022] The present invention is further provided with: a movable groove is provided on the slider, and the rotating shaft passes through the movable groove; the slider slides back and forth, and the rotating shaft moves relative to the slider within the movable groove.

[0023] The present invention further includes bearings fitted at both the upper and lower ends of the rotating shaft.

[0024] The beneficial effects of this utility model are as follows: The delayed door closer includes a fixed base with a rotating shaft rotatably mounted thereon; a slider is slidably mounted back and forth within the fixed base, one end of which is equipped with a closing spring, and the other end engages with a cam on the rotating shaft; a locking block is mounted on the slider, and a push-out component is mounted on the locking block; a locking pin is movably mounted in the mounting groove above the fixed base; when the door opens, the door leaf drives the rotating shaft to rotate, and the cam on the rotating shaft drives the slider to slide backward, compressing the closing spring. The locking block, after sliding backward with the slider, engages with the locking pin to lock the slider; after the door opens, the slider immediately slides forward under the drive of the closing spring, and the locking block, along with the locking pin, slides forward. The locking pin abuts against the front side wall of the mounting groove, preventing the locking block from sliding further forward, thus locking the rotating shaft at the open door position. Position; After the locking block slides forward, the pushing block separates from the locking block. The pushing block slides backward under the drive of the compression spring, and due to the blocking effect of the unlocking damper, the pushing block slides backward at a slower speed than the locking block. The upper end of the delayed pushing ejector component of the pushing block passes through the locking block and engages with the locking post, causing the locking block to separate from the locking post. The slider slides forward under the push of the closing spring, realizing the closing of the door. During this process, after the door 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 under the drive of the closing spring, realizing the delayed closing function. It is especially convenient for people to enter and exit normally in frequently accessed places such as conference rooms and offices, and at the same time, it is convenient for special groups such as the elderly and children to enter and exit normally closed doors. Attached Figure Description

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

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

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

[0028] Figure 4 This is a diagram showing the fit between the slider and the rotating shaft of a delayed closing door according to this utility model.

[0029] Figure 5 This is an installation diagram of the locking block for a delayed door closing mechanism according to this utility model.

[0030] Figure 6 This is a diagram showing the interaction between a push block and an unlocking block for a delayed closing door according to this utility model.

[0031] Figure 7 This is a diagram showing the fit between a protrusion and a positioning block for a delayed closing door according to this utility model.

[0032] Figure 8 This is a schematic diagram of the structure of a time-delayed closing door fixing base according to the present invention;

[0033] Explanation of reference numerals in the attached drawings: 1. Fixed base; 11. Rotating shaft; 111. Cam; 1111. Positioning groove; 12. End cap; 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 component; 41. Swinging component; 42. Unlocking block; 421. Pressing surface; 5. Locking post; 6. Unlocking drive assembly; 61. Compression spring; 62. Pushing block; 621. Abutment plate; 622. Flange; 63. Unlocking damper; 7. Elastic component; 8. Bearing. Detailed Implementation

[0034] See attached document Figures 1 to 8 The present invention provides a further detailed description of a time-delayed reset rotating mechanism.

[0035] A delayed reset rotating mechanism includes a fixed base 1 on which a rotating shaft 11 is rotatably mounted; a slider 2 is slidably mounted in the fixed base 1, 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, the locking block 3 is provided with an ejector component 4, and a locking post 5 is movably provided in the mounting groove 121 above the fixed seat 1.

[0037] The fixed base 1 is provided with an unlocking drive assembly 6 that drives the ejector member 4 to move upward. The unlocking drive assembly 6 includes a compression spring 61, a push block 62 placed below the ejector member 4, and an unlocking damper 63. The locking block 3 has an opening for the push block 62 to pass through, so that the push block 62 can move back and forth 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 ejector member 4.

[0039] When the door opens, the door leaf drives the rotating shaft 11 to rotate. The cam 111 rotates with the rotating shaft 11, pushing the slider 2 to push the locking block 3 backward to compress the closing spring 21. The locking block 3 cooperates with the locking pin 5 to lock the slider 2. Specifically, after the door is opened, the slider 2 immediately slides forward under the drive of the closing spring 21. The locking block 3 slides forward with the locking pin 5. The locking pin 5 will quickly abut against the front side wall of the mounting groove 121, preventing the locking block 3 from sliding forward and locking the rotating shaft in the open position. During the backward sliding of the slider 2, the locking block 3 separates from the pushing block 62. 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 and push out the member 4. The door moves (because the unlocking damper 63 will prevent the push block 62 from sliding backward, making the speed at which the push block 62 slides backward slower than the speed at which the locking block 3 slides backward); after the push block 62 slides into place, the push block 62 pushes the upper end of the ejector component 4 through the locking block 3 and engages with the locking post 5, so that the locking block 3 and the locking post 5 are separated, and the slider 2 slides forward under the push of the closing spring 21; thus closing the door; during this process, after the door 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 under the drive of the closing spring 21, realizing the delayed closing function; especially in frequently accessed places such as conference rooms and offices, it is convenient for people to enter and exit normally, and at the same time, it is convenient for special groups such as the elderly and children to enter and exit normally closed doors.

[0040] The ejector component 4 includes a swinging member 41 swinging on the locking block 3 and an unlocking block 42 movably mounted on the fixed base 1. The upper end of the unlocking block 42 is provided with an inclined pressing surface 421, and its lower end cooperates with the swinging member 41. The fixed base 1 is provided with a limiting groove 13 adapted to the unlocking block 42. The limiting groove 13 allows the unlocking block 42 to move vertically upward under the push of the swinging member 41.

[0041] The pushing block 62 pushes the swing member 41 backward, causing the upper end of the swing member 41 to push the unlocking block 42 upward. The unlocking block 42 moves vertically upward, and the pressing surface 421 presses the locking post 5 upward, causing the locking block 3 to separate from the locking post 5, thereby unlocking the slider; thus, the slider 2 is pushed forward under the action of the closing spring 21, thereby automatically closing the door.

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

[0043] The mounting groove 121 is disposed on the end cap 12 of the fixing base 1, and the mounting groove 121 gradually deepens from front to back; an elastic element 7, which is a foam block, is disposed in the mounting groove 121 and is disposed on the rear side of the locking post 5; the unlocking block 42 pushes the locking post 5 to move towards the rear end of the mounting groove 121, and the locking post 5 presses the elastic element 7 backward; when the upper end face of the unlocking element separates from the locking post 5, the locking post 5 moves back to the front end of the mounting groove 121 under the elastic action of the elastic element 7, thereby resetting.

[0044] The front end of the push block 62 is provided with a stop plate 621. One side of the stop plate 621 abuts against the locking block 3, and the other side abuts against the compression spring 61. Driven by the closing spring 21, the locking block 3 slides forward with the slider 2, and the stop plate 621 compresses the compression spring 61 forward, so that the compression spring 61 stores energy.

[0045] The slider 2 is connected to a damper 22 at the end away from the closing spring 21. The damper 22 prevents the slider 2 from sliding back and forth. When the door is opened, the cam 111 drives the slider 2 to slide backward, and the damper 22 prevents the slider 2 from sliding backward. When the door is closed, the closing spring 21 drives the slider 2 to slide forward, and the damper 22 prevents the slider 2 from sliding forward. This provides a damping effect.

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

[0047] The slider 2 is provided with a moving groove 24, and the rotating shaft 11 passes through the moving groove 24; the slider 2 slides back and forth, and the rotating shaft 11 moves relative to each other in the moving groove 24; bearings 8 are sleeved 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 of the closing spring 21 is also adjustable. These adjustments can adjust the closing speed and the dwell time of the door at any position after opening.

[0049] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A time-delayed reset rotating mechanism, comprising a fixed base rotatably provided with a rotating shaft; characterized in that: A slider is slidably arranged in the fixed base, with a closing spring at one end and a cam on the rotating shaft at the other end. The slider is provided with a locking block, the locking block is provided with an ejector component, and a locking post is movably provided in the mounting groove above the fixed seat; The fixed base is provided with an unlocking drive assembly that drives the ejector component to move upward. The unlocking drive assembly includes a compression spring, an unlocking damper, and a push block located below the ejector component. 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 the ejector component. The cam rotates with the rotating shaft, which pushes the slider to move the locking block backward to compress the closing spring. The locking block will cooperate with the locking post to lock the slider. At this time, the compression spring drives the push block to overcome the resistance of the unlocking damper and move towards the ejector. The push block pushes the upper end of the ejector to pass through the locking block and cooperate with the locking post, so that the locking block and the locking post are separated. The slider slides forward under the push of the closing spring.

2. The delayed reset rotating mechanism according to claim 1, characterized in that: The ejection component includes a swinging member swinging on the locking block and an unlocking block movably mounted on the fixed base. The upper end of the unlocking block is inclined with a pressing surface, and its lower end cooperates with the swinging member. The pushing block pushes the swinging member backward, causing the upper end of the swinging member to push the unlocking block upward, and the pressing surface presses the locking post upward, causing the locking block to separate from the locking post.

3. The delayed reset rotating mechanism according to claim 2, characterized in that: The fixed base is provided with a limiting groove that matches the unlocking block, and the limiting groove allows the unlocking block to move vertically upward under the push of the swinging component.

4. The delayed reset rotating mechanism according to claim 3, characterized in that: The mounting groove is provided on the end cover of the fixing base, and the mounting groove gradually becomes deeper from front to back; An elastic element is provided in the mounting groove, and the elastic element is located on the rear side of the locking post. The unlocking block pushes the locking pin toward the rear end of the mounting slot, and the locking pin presses the elastic element backward.

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

6. A delayed reset rotating mechanism according to claim 1, 2, 3, 4, or 5, characterized in that: The pushing block has an upwardly protruding flange, and the rear end of the flange has an inclined guide surface; Driven by the compression spring, the flange of the push block will push the upper end of the unlocking block to extend out of the locking block and cooperate with the locking post.

7. A delayed reset rotating mechanism according to claim 1, 2, 3, 4, or 5, characterized in that: The slider is connected to a damper at the end away from the closing spring, which prevents the slider from sliding back and forth.

8. A delayed reset rotating 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 that are adapted to the positioning grooves. The positioning blocks cooperate with the positioning grooves to prevent the rotating shaft from rotating.

9. The delayed reset rotating mechanism according to claim 8, characterized in that: The slider has a movable groove, and the rotating shaft passes through the movable groove; the slider slides back and forth, and the rotating shaft moves relative to it within the movable groove.

10. A delayed reset rotating mechanism according to claim 9, characterized in that: Bearings are fitted at both the upper and lower ends of the rotating shaft.

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