CN108590408B

CN108590408B - Buffering door closer

Info

Publication number: CN108590408B
Application number: CN201810419567.0A
Authority: CN
Inventors: 聂飞; 朱力克
Original assignee: Suzhou Fuerda Industry Co ltd
Current assignee: Suzhou Fuerda Industry Co ltd
Priority date: 2018-05-04
Filing date: 2018-05-04
Publication date: 2023-11-07
Anticipated expiration: 2038-05-04
Also published as: CN108590408A

Abstract

The application relates to a buffer door closer, which comprises a touch assembly and a buffer assembly, wherein the buffer assembly comprises a mounting seat, a guide frame and a power piece, wherein a guide groove extending inwards from the outside is formed on the guide frame, and when the buffer assembly is not matched with the touch assembly, the outer end part of the guide groove is positioned outside the mounting seat under the driving of the power piece; the touch assembly comprises a connecting seat and a touch pin, when the door is closed, the touch pin moves from the outer end part of the guide groove into the guide groove and touches the guide frame, and the power piece drives the guide frame to rotate into the mounting seat step by step; when the door is opened, the trigger pin moves outwards from the inside of the guide groove and drives the guide frame outwards until the guide frame rotates outwards to the boundary point, the guide frame is in a forbidden state in rotation balance, and the door is stopped in an opened state. The application has mild action when closing the door, does not generate impact sound and does not pinch hands; when the door is opened, the door can be in a stationary state when the door is opened to the boundary point position.

Description

Buffering door closer

Technical Field

The application relates to a buffer door closer.

Background

At present, a spring type door closer is commonly or traditionally adopted, and is commonly called as a T-shaped spring door closer in China, although the spring type door closer has one side of simple structure and low price, the main disadvantage of the spring type door closer is that the impact force is large when the door is closed, particularly when the door is not closed at a too slow speed, and a spring with larger acting force has to be selected, the problem of large impact force especially exists when the door is closed, and when the door is closed, the movement speed of the door is very fast due to inertia, people are often not easy to avoid, hands are easy to clamp, and meanwhile, larger impact sound is generated at the moment of closing the door, so that the door closer is prevented from being further popularized and applied due to the reasons.

The application provides a spring type door closer which has proper door closing speed, acts slowly when closing the door and does not generate impact sound when closing the door, so as to eliminate the defects of large impact force when closing the door and large impact sound when closing the door.

Disclosure of Invention

The application aims to overcome the defects of the prior art and provide a brand new buffer door closer.

In order to solve the technical problems, the application adopts the following technical scheme:

the buffer door closer comprises a touch assembly fixedly arranged on a door, and a buffer assembly fixedly arranged on the top of a door frame and matched with the touch assembly to buffer the movement speed of the door, wherein the buffer assembly comprises a mounting seat, a guide frame rotationally arranged on the mounting seat around a rotating shaft extending in the direction of a door shaft, and a power piece for controlling the steering movement state of the guide frame, wherein a guide groove extending inwards from outside is formed on the guide frame, and when the buffer assembly is not matched with the touch assembly, the outer end part of the guide groove is positioned outside the mounting seat under the driving of the power piece;

the touch assembly comprises a connecting seat and a touch pin which is arranged on the connecting seat and can move in the guide groove, when the door is closed, the touch pin moves into the guide groove from the outer end part of the guide groove, and after touching the guide frame, the power piece drives the guide frame to rotate into the mounting seat step by step; when the door is opened, the trigger pin moves outwards from the inside of the guide groove and drives the guide frame outwards until the guide frame rotates outwards to the boundary point, the guide frame is in a forbidden state in rotation balance, and the door is stopped in an opened state.

Specifically, the guide groove comprises an opening section communicated with the outside and an extension section extending inwards from the opening section, when the door is closed, the opening section rotates into the mounting seat, and the touch pin stops moving and is positioned in the extension section when the extension section is parallel to the length direction of the door frame; when the trigger pin moves from the extension section to the opening section to the end of the opening section, the guide frame is in a disabled state in rotation balance, and the door is stopped in an opened state.

Furthermore, a sealing plate is arranged at the top of the guide groove, a slope which is convenient for the touch pin to enter the guide groove is arranged at the outer end part of the sealing plate, and the touch pin can be elastically and telescopically arranged along the extending direction of the door shaft.

According to a specific implementation and preferred aspect of the application, the power element comprises a buffer arranged in the mounting seat and capable of pushing the guide frame to rotate around the rotating shaft, and an elastic component which is abutted against the guide frame and capable of keeping the inward movement trend of the guide frame, when the door is closed, the buffer gradually reduces the stress applied to the guide frame, and the elastic component drives the guide frame to rotate into the mounting seat. Therefore, the speed of closing the door is relatively slow, so that the following two situations do not occur: (1) no impact sound is generated at the moment of closing the door; (2) the hand can not be clamped.

Preferably, the direction of the stress applied by the buffer to the guide frame is opposite to the direction of the stress applied by the elastic component to the guide frame, and the stress applied by the buffer to the guide frame is larger than the stress applied by the elastic component to the guide frame when the touch component is separated from the buffer component. At this time, the opening section of the guide groove of the guide frame can be located outside the mount.

Further preferably, the damper comprises a damper body capable of increasing air intake or releasing air exhaust, and a pushing module arranged between the damper body and the guide frame, wherein the pushing module applies stress or forms reset damping to the guide frame during movement of the damper body so as to damp the movement speed of the door.

Preferably, the elastic component comprises a mounting bracket extending along the length direction of the top of the door frame and abutting against the guide frame from one end part, and a spring arranged in the mounting bracket and respectively abutting against the mounting bracket and the mounting seat at two end parts. When the stress of the device body on the guide frame is gradually reduced, the spring can push the guide frame to move towards the inside of the mounting seat, so that the door closing speed is buffered.

Further, a rolling bearing capable of rotating around the axis direction of the rolling bearing is arranged at the contact end part of the guide frame and the mounting bracket, wherein the axis of the rolling bearing is parallel to the axis of the rotating shaft, and the mounting bracket is abutted against one side of the outer part of the rolling bearing. The rolling bearing is used for facilitating steering movement of the guide frame, reducing power loss and further reducing the use requirement of the spring.

According to still another specific implementation and preferred aspect of the present application, the mounting base includes a panel connected to the inside of the top of the door frame, an outer casing detachably connected to the panel and having a buffer assembly mounting cavity formed therein, and an inner frame disposed in the mounting cavity, wherein the buffer assembly is mounted on the inner frame, and a notch for avoiding movement of the touch assembly is provided at a side portion of the inner frame and the outer casing, and when the touch pin moves toward the inside of the guide groove, the connecting base moves toward the notch, and when the door is closed, the connecting base is fitted to a side edge of the outer casing provided with the notch.

In addition, the connecting seat comprises a seat body and a cover shell arranged at the periphery of the seat body, wherein the touch pin is arranged on the seat body in a telescopic manner along the door shaft direction.

Preferably, the touch pin includes an adjustment nut extending in a door shaft direction and disposed on the seat body, a nut pin disposed inside the adjustment nut and protruding from a top of the adjustment nut, a nut plug for plugging a bottom portion of the adjustment nut with the nut pin passing through the hole, and an elastic member disposed between the nut plug and the nut pin.

Due to the implementation of the technical scheme, compared with the prior art, the application has the following advantages:

the application forms buffering in the process of closing the door, so that the door is operated slowly when closed, no impact sound is generated, and no hand is clamped; when the door is opened, the door can be in a static state when the door is opened to the boundary point position, and meanwhile, the door is simple in structure, convenient to implement and low in cost.

Drawings

The application will now be described in further detail with reference to the drawings and to specific examples.

FIG. 1 is a schematic perspective view of a buffer door closer according to the present application;

FIG. 2 is a schematic front view of FIG. 1;

FIG. 3 is a schematic top view of FIG. 1;

FIG. 4 is an exploded view of the structure of FIG. 1;

wherein: 1. a touch assembly; 10. a connecting seat; 100. a seat body; 101. a housing; 11. a touch pin; 110. adjusting the nut; 111. a nut pin; 112. a nut plug; 113. an elastic member (spring);

2. a buffer assembly; 20. a mounting base; 200. a panel; 201. an outer housing; 202. an inner frame; 21. a guide frame; 21a, guide grooves; 210a, an open section; 210b, an extension; 210c, sealing plates; 22. a power member; 221. a buffer; 221a, a device body; 221b, pushing the module; 222. an elastic component; 222a, mounting a support; 222b, springs; 223. a rolling bearing;

a. a rotating shaft; b. a notch; c. and (3) a slope.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature. It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

As shown in fig. 1, the buffering door closer provided in this embodiment includes a touch assembly 1 fixedly disposed on a door, and a buffering assembly 2 fixedly disposed on the top of a door frame and cooperating with the touch assembly 1 to buffer the movement speed of the door.

With reference to fig. 2 to 4, the specific structure adopted in this example is as follows:

the buffer assembly 2 includes a mounting base 20, a guide frame 21 rotatably provided on the mounting base 20 about a rotation axis a extending in a door axis direction, and a power member 22 for controlling a steering movement state of the guide frame 21, wherein the guide frame 21 is formed with a guide groove 21a extending inward from the outside, and when the buffer assembly 1 is not engaged with the touch assembly 2, an outer end portion of the guide groove 21a is positioned outside the mounting base 20 under the driving of the power member 22.

The touch assembly 1 comprises a connecting seat 10 and a touch pin 11 which is arranged on the connecting seat 10 and can move in a guide groove 21a, when the door is closed, the touch pin 11 moves from the outer end part of the guide groove 21a into the guide groove 21a and touches the guide frame 21, and the power piece 22 drives the guide frame 21 to rotate into the mounting seat 20 step by step; when the door is opened, the trigger pin 11 moves outward from the inside of the guide groove 21a and drives the guide frame 21 outward until the guide frame 21 rotates outward to the boundary point position, the guide frame 21 is in the prohibiting state in the rotation balance, and the door is stopped in the opened state.

Specifically, the connection base 10 includes a base body 100, and a cover 101 disposed on the outer periphery of the base body 100, wherein the trigger pin 11 is telescopically disposed on the base body 100 along the door axis direction.

The touch pin 11 includes an adjustment nut 110 extending in the door axis direction provided on the seat body 100, a nut pin 111 provided inside the adjustment nut 110 and protruding from the top of the adjustment nut 110, a nut plug 112 for plugging the bottom of the adjustment nut 110 with the nut pin 111 passing through the hole, and an elastic member 113 provided between the nut plug 112 and the nut pin 111.

The mount pad 20 includes the panel 200 of door frame top internal connection, with panel 200 detachable connection and inside form the shell 201 that supplies buffer assembly installation cavity, and set up the interior frame 202 in the installation cavity, wherein buffer assembly 2 installs on interior frame 202, and the lateral part of interior frame 202 and shell 201 is equipped with the breach b of dodging the touch subassembly motion, when touch pin 11 moves to at guide way 21 inside, connecting seat 10 moves to breach b in, when the door is closed, connecting seat 10 laminating is equipped with breach b's side at shell 201.

The guide frame 21 is provided on the inner frame 202 through a rotation shaft a, and the formed guide groove 21a includes an opening section 210a communicating with the outside, an extension section 210b extending inward from the opening section 210a, and a sealing plate 210c formed on top of the opening section 210a and the extension section 210 b.

In this example, a slope c is provided at the outer end of the sealing plate 210 to facilitate the entry of the trigger pin 11 into the guide groove 21 a.

When the retractable nut pin 111 comes into contact with the slope, the nut pin 111 is retracted downward and presses the elastic member 113 (the spring used in this example), and then moves toward the inside of the guide groove 21a with the top of the nut pin 111 kept in a state of abutting against the bottom of the sealing plate 210c. Accordingly, the telescopic movement of the nut pin 111 prevents the impact or damage of the nut pin 111 when the touch module 1 is engaged with the damper module 2.

Specifically, when the door is closed, the opening section 210a rotates into the mounting seat 20 until the extension section 210b is parallel to the length direction of the door frame, and the trigger pin 11 stops moving and is located in the extension section 210 b; when the trigger pin 11 moves from the extension section 210b to the opening section 210a to the end of the opening section, the guide frame 21 is in a prohibiting state in the rotation balance (that is, the sum of all moments generated to the guide frame 21 is zero), and the door is stopped in the open state.

The power member 22 includes a damper 221 disposed in the mounting base 20 and capable of pushing the guide frame 21 to rotate about the rotation axis a, and an elastic member 222 abutting against the guide frame 21 and capable of maintaining the inward movement trend of the guide frame 21, and when the door is closed, the damper 221 gradually reduces the stress applied to the guide frame 21, and the elastic member 222 drives the guide frame 21 to rotate into the mounting base 20. Therefore, the speed of closing the door is relatively slow, so that the following two situations do not occur: (1) no impact sound is generated at the moment of closing the door; (2) the hand can not be clamped.

In this example, the direction of the stress applied to the guide frame 21 by the buffer 221 is opposite to the direction of the stress applied to the guide frame by the elastic component 222, and the stress applied to the guide frame 21 by the buffer 221 is greater than the stress applied to the guide frame 21 by the elastic component 222 when the touch component 1 is separated from the buffer component 2, and at this time, the opening section 210a of the guide groove 21a of the guide frame 21 can be located outside the mounting seat 20.

The buffer 221 comprises a device body 221a capable of increasing air suction or exhausting pressure and a pushing module 221b arranged between the device body 221a and the guide frame 21, wherein the pushing module 221b applies stress to the guide frame 21 or forms reset buffer to buffer the movement speed of the door during the movement of the device body 221 a.

In this example, the device bodies 221a are two groups and are arranged side by side (the device bodies 221a are directly purchased from the outside, which belongs to the prior art, and the principle thereof is not described in detail here).

The elastic member 222 includes a mounting bracket 222a extending along the length of the top of the door frame and abutting against the guide frame 21 from one end, and a spring 222b disposed in the mounting bracket 222a and abutting between the mounting bracket 222a and the mounting seat 20 at both ends, respectively. When the stress of the guide frame 21 by the main body 221a is gradually reduced, the spring 222b can push the guide frame 21 to move toward the inside of the mounting seat 20, thereby buffering the door closing speed.

Meanwhile, a rolling bearing 223 capable of rotating around the axis direction of the rolling bearing 223 is arranged at the contact end of the guide frame 21 and the mounting bracket 222a, wherein the axis of the rolling bearing 223 is parallel to the axis of the rotating shaft a, and the mounting bracket 222a is abutted against one side of the outer part of the rolling bearing 223. The rolling bearing is used for facilitating steering movement of the guide frame, reducing power loss and further reducing the use requirement of the spring.

In summary, the state of the present embodiment is described as follows:

disengagement state: when the touch assembly 1 and the buffer assembly 2 are completely separated, the outer end part of the guide groove 21a is positioned outside the mounting seat 20 under the driving of the power piece 22;

door closing state: when the door is closed, the touch assembly 1 moves towards the buffer assembly 2 until the nut pin 111 is contracted downwards and enters the guide groove 21a of the guide frame 21, after external force is applied to the guide frame 21, the buffer 221 gradually decompresses, the guide frame 21 rotates towards the mounting seat 20 under the driving of the elastic assembly 222 until the nut pin 111 stops moving and is positioned in the extension section 210b when the extension section 210b is parallel to the length direction of the door frame, and meanwhile, the connecting seat 10 of the touch assembly 1 is positioned in the notch and is attached to the side edge of the outer cover 201 provided with the notch b;

door open state: when the door is pushed, the nut pin 111 moves from the extension section 210b to the opening section 210a until the sum of the moments received by the guide frames 21 is zero, and the guide frames 21 at this time are in the prohibiting state in the rotation balance, so that the door is stopped in the open state.

The present application has been described in detail with the purpose of enabling those skilled in the art to understand and practice the present application, but not to limit the scope of the present application, and the present application is not limited to the above-described embodiments, and all equivalent changes or modifications according to the spirit of the present application should be covered in the scope of the present application.

Claims

1. The utility model provides a buffering door closer, buffering door closer including fixed touching subassembly that sets up on the door, fixed setting at the door frame top and with touching subassembly cooperation is with buffering door movement speed's buffering subassembly, its characterized in that: the buffer component comprises a mounting seat, a guide frame and a power piece, wherein the guide frame is rotatably arranged on the mounting seat around a rotating shaft extending in the door shaft direction, the power piece is used for controlling the steering motion state of the guide frame, a guide groove extending inwards from the outside is formed on the guide frame, and when the buffer component is not matched with the touch component, the outer end part of the guide groove is positioned outside the mounting seat under the driving of the power piece; the power piece comprises a buffer which is arranged in the mounting seat and can push the guide frame to rotate around the rotating shaft, and an elastic component which is abutted against the guide frame and can keep the inward movement trend of the guide frame, when the door is closed, the buffer gradually reduces the stress applied to the guide frame, and the elastic component drives the guide frame to rotate towards the mounting seat; the touch assembly comprises a connecting seat and a touch pin which is arranged on the connecting seat and can move in the guide groove, when the door is closed, the touch pin moves into the guide groove from the outer end part of the guide groove and touches the guide frame, and the power piece drives the guide frame to rotate towards the mounting seat step by step; when the door is opened, the touch pin moves outwards from the inside of the guide groove and drives the guide frame outwards until the guide frame rotates outwards to the boundary point position, the guide frame is in a forbidden state in rotation balance, and the door is stopped in an open state; the connecting seat comprises a seat body and a housing arranged at the periphery of the seat body, wherein the touch pin comprises an adjusting nut, a nut pin, a nut plug and an elastic piece, the adjusting nut is arranged on the seat body in a manner of extending along the door axis direction, the nut pin is arranged inside the adjusting nut and protrudes out of the top of the adjusting nut, the nut plug is used for plugging the bottom of the adjusting nut for the nut pin to pass through a hole, and the elastic piece is arranged between the nut plug and the nut pin; the mounting seat comprises a panel connected with the inside of the top of the door frame, an outer cover shell detachably connected with the panel and internally provided with a buffer assembly mounting cavity, and an inner frame arranged in the mounting cavity, wherein the buffer assembly is mounted on the inner frame, a gap for avoiding the movement of the touch assembly is formed in the side part of the inner frame and the outer cover shell, when the touch pin moves towards the inside of the guide groove, the connecting seat moves towards the inside of the gap, and when the door is closed, the connecting seat is attached to the side edge of the gap formed in the outer cover shell.

2. The cushioned door closer of claim 1 wherein: the guide groove comprises an opening section communicated with the outside and an extension section extending inwards from the opening section, when the door is closed, the opening section rotates towards the mounting seat until the extension section is parallel to the length direction of the door frame, and the touch pin stops moving and is positioned in the extension section.

3. The cushioned door closer of claim 2, wherein: when the trigger pin moves from the extension section to the opening section to the tail end of the opening section, the guide frame is in a forbidden state in rotation balance, and the door is stopped in an open state.

4. The cushioned door closer of claim 2, wherein: a sealing plate is arranged at the top of the guide groove, and a slope which is convenient for the touch pin to enter the guide groove is arranged at the outer end part of the sealing plate.

5. The cushioned door closer of claim 4 wherein: the touch pin can be elastically telescopic along the extending direction of the door shaft.

6. The cushioned door closer of claim 1 wherein: the direction of the stress applied by the buffer to the guide frame is opposite to the direction of the stress applied by the elastic component to the guide frame, and the stress is parallel to the direction of the stress applied by the buffer to the guide frame.

7. The cushioned door closer of claim 6, wherein: when the touch assembly is separated from the buffer assembly, the buffer applies stress to the guide frame more than the elastic assembly.

8. The fluctuated door closer according to claim 1 or 6, wherein: the buffer comprises a device body capable of increasing air suction or exhausting pressure and a pushing module arranged between the device body and the guide frame, wherein in the movement of the device body, the pushing module applies stress to the guide frame or forms reset buffer to buffer the movement speed of the door.

9. The fluctuated door closer according to claim 1 or 6, wherein: the elastic component include along the extension of door frame top length direction and from one end conflict be in installing support on the leading truck, set up in the installing support and both ends are respectively contradicted the installing support with the spring between the mount pad.

10. The cushioned door closer of claim 9, wherein: the contact end part of the guide frame and the mounting bracket is provided with a rolling bearing capable of rotating around the axis direction of the guide frame, wherein the axis of the rolling bearing is parallel to the axis of the rotating shaft.

11. The cushioned door closer of claim 10 wherein: the mounting bracket is abutted against one side of the outer part of the rolling bearing.