A connecting device for a door closer and a door closer

Abstract

The application discloses a connecting device for a door closer and the door closer, wherein the connecting device comprises a first swing arm, a swing seat, a second swing arm and a locking mechanism; the first swing arm is fixedly connected with the connecting seat; the swing seat is swingably installed on the connecting seat, and a locking C-shaped buckle is arranged on the swing seat; the second swing arm is pivotally connected with the connecting seat to form a first positioning point, a locking column is arranged on the second swing arm, the locking column slides into the locking C-shaped buckle to form a second positioning point, and the swing seat is pushed to move in the process that the locking column slides into the locking C-shaped buckle; the locking mechanism positions the connecting seat and the swing seat to be relatively fixed to form a third positioning point after the locking column slides into the locking C-shaped buckle, and the locking mechanism releases the relative fixation of the connecting seat and the swing seat before the locking column slides out of the locking C-shaped buckle. The application forms a stable triangular structure through the three positioning points, so that the door closer can stably keep the door or window in a constant opening state, and the reliability is good.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of door closer, in particular to a connecting device for door closer and door closer. BACKGROUND

[0002] The door closer is used to connect with the door or window, when the door or window is opened, the door closer is compressed and released, the door or window is automatically closed to ensure that the door or window is closed in time after being opened. That is, the main purpose of the door closer is to make the door or window close automatically to limit the spread of fire.

[0003] Specifically, when the door or window is opened, the door or window drives the connecting rod to move and rotates the transmission gear, drives the rack plunger to move, the light touch spring is compressed in the process of the rack plunger moving, the hydraulic oil in the right cavity of the oil cylinder is also compressed, the one-way valve ball on the left side of the rack plunger is opened under the action of the oil pressure, and the hydraulic oil in the right cavity flows to the left cavity through the one-way valve. After the opening process of the door or window is completed, the rack plunger is moved in the opposite direction by the release of the light touch spring compressed in the opening process, drives the transmission gear and the connecting rod to rotate, and makes the door or window close. In the related art, the door closer is normally closed and cannot be positioned when the door or window is opened.

[0004] The door closer disclosed in the publication CN102995996A has a stop function, an elastic steel ball is arranged at the front end of the door closer body, the steel ball is clamped into the groove of the positioning bottom plate under the action of the spring, and the opening positioning function is realized. The door closer with the stop function has poor stability and reliability due to the positioning of the steel ball and the groove, and has more components and a more complex structure. SUMMARY

[0005] The present application aims to solve at least one of the above technical problems in the art. To this end, one object of the present application is to provide a connecting device for door closer, which forms a stable triangular structure through three positioning points, so as to realize that the door closer can stably keep the door or window in the normally open state, that is, the door closer can stably keep the door or window in the normally open state, and has good reliability.

[0006] A second object of the present application is to provide a door closer comprising the connecting device.

[0007] To achieve the above object, the first aspect of the present application provides a connecting device for door closer, comprising:

[0008] A first swing arm is fixedly connected with the connecting seat;

[0009] A swing seat is swingably installed on the connecting seat, and a locking C-shaped buckle is arranged on the swing seat.

[0010] A second swing arm is pivotally connected with the connecting seat to form a first positioning point, and a locking column is arranged on the second swing arm and is slid into the locking C-shaped buckle to form a second positioning point, and the locking column is pushed to move the swing seat during the sliding process.

[0011] A locking mechanism is arranged to position the connecting seat and the swing seat to be relatively fixed to form a third positioning point after the locking column is slid into the locking C-shaped buckle, and the locking mechanism is arranged to release the relative fixation of the connecting seat and the swing seat before the locking column is slid out of the locking C-shaped buckle.

[0012] According to the connecting device for the door closer, the first swing arm is connected with the door or the window, and the second swing arm is connected with the main body of the door closer in use, the second swing arm is pivotally connected with the connecting seat to form a first positioning point, the locking column of the second swing arm pushes the swing seat to swing and is slid into the second positioning point of the locking C-shaped buckle when the first swing arm rotates with the door or the window, and the locking mechanism is arranged to position the connecting seat and the swing seat to be relatively fixed to form a third positioning point after the locking column is slid into the locking C-shaped buckle. Therefore, the stable triangular structure is formed through the three positioning points, so that the door closer can stably keep the door or the window in the open state, and the reliability is good.

[0013] In addition, the connecting device for the door closer can have the following additional technical features according to the above-mentioned embodiments of the present application.

[0014] Optionally, the locking mechanism comprises an operating assembly, a pin hole and a pin shaft, one of the pin hole and the pin shaft is arranged on the swing seat, and the other of the pin hole and the pin shaft is arranged on the connecting seat, the operating assembly is connected with the pin shaft, the operating assembly drives the pin shaft to be inserted into the pin hole to position the connecting seat and the swing seat to be relatively fixed after the locking column is slid into the locking C-shaped buckle, and the operating assembly drives the pin shaft to slide out of the pin hole before the locking column is slid out of the locking C-shaped buckle.

[0015] Specifically, the operating assembly comprises an electromagnet, a lever and a signal switch, the electromagnet is arranged on the connecting seat and is connected with the signal switch, the lever is swingably arranged on the connecting seat, one end of the lever can be magnetically attracted by the electromagnet, and the other end of the lever is connected with the pin shaft, and the signal switch triggers a signal to the electromagnet after the locking column is slid into the locking C-shaped buckle, the electromagnet drives the lever to swing, and the pin shaft is driven to be inserted into the pin hole.

[0016] Further, a light touch spring is arranged between the lever and the connecting seat; before the locking column slides out of the locking C-shaped buckle, the signal switch triggers a signal to make the electromagnet lose the attraction force, and the pin shaft can slide out of the pin hole.

[0017] Further, the middle part of the swing seat is hinged to the connecting seat, one side of the hinged position forms the locking C-shaped buckle, and the other side of the hinged position forms the pin hole.

[0018] Further, a reset torsion spring is arranged between the swing seat and the connecting seat, one end of the reset torsion spring abuts against the swing seat, and the other end of the reset torsion spring abuts against the connecting seat.

[0019] Further, the opening end of the locking C-shaped buckle, which is used for the sliding-in and sliding-out of the locking column, is provided with an arc-shaped guide surface; the opening end of the locking C-shaped buckle, on the side of the sliding-in and sliding-out of the locking column, protrudes from the other side.

[0020] Specifically, the operation assembly includes an adjusting screw and a force applying spring, the connecting seat is provided with a mounting through hole, the pin shaft protrudes from the mounting through hole, the adjusting screw is threadedly connected with the mounting through hole, and the force applying spring is arranged in the mounting through hole, one end of the force applying spring abuts against the adjusting screw, and the other end of the force applying spring abuts against the pin shaft.

[0021] Further, the pin hole is arranged on the swing seat, one side of the swing seat corresponding to the pin hole is provided with an electromagnet to magnetically attract the pin shaft.

[0022] Optionally, the first swing arm is fixedly connected with the connecting seat in a separate or integrated manner.

[0023] To achieve the above object, the second aspect of the present application provides a door closer, which comprises a connecting device, a first swing arm of the connecting device is used for connecting a door or a window, and a second swing arm of the connecting device is connected with a main body of the door closer.

[0024] According to the door closer provided by the embodiment of the present application, in use, the first swing arm is connected with the door or the window, and the second swing arm is connected with the main body of the door closer; the second swing arm is pivotally connected with the connecting seat to form a first positioning point; when the first swing arm rotates with the door or the window, the locking column of the second swing arm pushes and pushes the swing seat to swing and slide into a second positioning point in the locking C-shaped buckle; the locking mechanism positions the connecting seat and the swing seat to be relatively fixed after the locking column slides into the locking C-shaped buckle, so as to form a third positioning point. Therefore, the present application forms a stable triangular structure through the three positioning points, so as to realize that the door closer stably keeps the door or the window in an open state, that is, the door closer can stably keep the door or the window in an open state, and the reliability is good. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1Front perspective view of the embodiment of the present application (locking post not inserted into the locking C-shaped buckle);

[0026] Figure 2 Back perspective view of the embodiment of the present application (locking post not inserted into the locking C-shaped buckle);

[0027] Figure 3 Front perspective view of the embodiment of the present application (locking post inserted into the locking C-shaped buckle);

[0028] Figure 4 Back perspective view of the embodiment of the present application (locking post inserted into the locking C-shaped buckle);

[0029] Figure 5 Top view of the embodiment of the present application;

[0030] Figure 6 is Figure 5 Sectional view in A-A direction;

[0031] Figure 7 Side view of the embodiment of the present application;

[0032] Figure 8 Schematic view of the first swing arm and the second swing arm being rotated to the minimum included angle of the embodiment of the present application;

[0033] Figure 9 Another structural schematic view of the embodiment of the present application.

[0034] Label explanation

[0035] First swing arm 1, connecting seat 2, mounting through hole 21, swing seat 3, locking C-shaped buckle 31, second swing arm 4, locking post 41, locking mechanism 5, operation assembly 51, electromagnet 511, lever 512, signal switch 513, light touch spring 514, adjusting screw 515, force spring 516, pin hole 52, pin shaft 53, screw rod 531, pin shaft main body 532, reset torsional spring 6. DETAILED DESCRIPTION

[0036] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0037] For a better understanding of the above technical solutions, the exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present application can be more thoroughly understood and the scope of the present application can be accurately conveyed to those skilled in the art.

[0038] As shown in the drawings, a connecting device for a door closer according to an embodiment of the present application comprises a first swing arm 1, a connecting seat 2, a swing seat 3, a second swing arm 4 and a locking mechanism 5. Figures 1 to 9 The first swing arm 1 is fixedly connected with the connecting seat 2. Alternatively, the first swing arm 1 can be fixedly connected with the connecting seat 2 in a separate manner. Specifically, a threaded hole is provided on the connecting seat 2, and a mounting tooth is provided on the periphery of the threaded hole. Correspondingly, a mounting hole is provided on the first swing arm 1, and a mounting tooth is also provided on the periphery of the mounting hole. A threaded rod is screwed through the mounting hole of the first swing arm 1 and the threaded hole of the connecting seat 2, and the two mounting teeth are engaged with each other, so as to fixedly connect the first swing arm 1 with the connecting seat 2. Alternatively, the first swing arm 1 can be fixedly connected with the connecting seat 2 in an integrated manner, i.e., the connecting seat 2 is directly extended from the end of the first swing arm 1.

[0039] The swing seat 3 is swingably mounted on the connecting seat 2, and a locking C-shaped buckle 31 is provided on the swing seat 3. Specifically, a pivot is provided on the swing seat 3, and a pivot hole is provided on the connecting seat 2. The swing seat 3 is swingably mounted on the connecting seat 2 through the cooperation of the pivot and the pivot hole, i.e., the swing seat 3 is hinged with the connecting seat 2.

[0040] The second swing arm 4 is pivotally connected with the connecting seat 2 to form a first positioning point, and a locking column 41 is provided on the second swing arm 4. The locking column 41 is slid into the locking C-shaped buckle 31 to form a second positioning point, and the locking column 41 pushes the swing seat 3 to move during the sliding process. Specifically, an arc-shaped guide surface is provided on the side of the locking C-shaped buckle 31 opposite to the opening end, so as to facilitate the sliding of the locking column 41 without being stuck. The side of the locking C-shaped buckle 31 opposite to the opening end protrudes from the other side, so that the locking column 41 is not easily slid out of the locking C-shaped buckle 31 after being slid in, thereby further positioning the locking column 41.

[0041] The locking mechanism 5 positions the connecting seat 2 and the swing seat 3 to be relatively fixed after the locking column 41 is slid into the locking C-shaped buckle 31, thereby forming a third positioning point. Before the locking column 41 is slid out of the locking C-shaped buckle 31, the locking mechanism 5 releases the relative fixation of the connecting seat 2 and the swing seat 3.

[0042] The locking mechanism 5 positions the connecting seat 2 and the swing seat 3 to be relatively fixed after the locking column 41 is slid into the locking C-shaped buckle 31, thereby forming a third positioning point. Before the locking column 41 is slid out of the locking C-shaped buckle 31, the locking mechanism 5 releases the relative fixation of the connecting seat 2 and the swing seat 3.

[0043] Optionally, the locking mechanism 5 includes an operating component 51, a pin hole 52, and a pin 53; one of the pin hole 52 and the pin 53 is disposed on the swing seat 3, and the other of the pin hole 52 and the pin 53 is disposed on the connecting seat 2. In this embodiment, the pin 53 is disposed on the swing seat 3, and the pin hole 52 is disposed on the connecting seat 2. The operating component 51 is connected to the pin 53. After the locking pin 41 slides into the locking C-shaped buckle 31, the operating component 51 drives the pin 53 to insert into the pin hole 52 to position the connecting seat 2 and the swing seat 3 so that they are relatively fixed. Before the locking pin 41 slides out of the locking C-shaped buckle 31, the operating component 51 drives the pin 53 to slide out of the pin hole 52.

[0044] Specifically, the pin 53 includes a screw 531 and a pin body 532 that is threadedly connected to the screw 531. Since the screw 531 is threadedly connected to the pin body 532, the length of the pin 53 can be adjusted.

[0045] In some examples, such as Figure 5 and Figure 6 As shown, the operating component 51 includes an electromagnet 511, a lever 512, and a signal switch 513. The electromagnet 511 is mounted on the connecting seat 2 and connected to the signal switch 513. The lever 512 is sway-mounted on the connecting seat 2. One end of the lever 512 can be magnetically attracted by the electromagnet 511, and the other end is connected to the pin 53. The signal switch 513 triggers a signal to the electromagnet 511 after the locking pin 41 slides into the locking C-shaped buckle 31. Specifically, when the locking pin 41 slides into the locking C-shaped buckle 31, the signal switch 513 is simultaneously triggered, and the electromagnet 511 drives the lever 512 to swing, driving the pin 53 to insert into the pin hole 52, so as to position the connecting seat 2 and the swing seat 3 to fix them relative to each other.

[0046] A light-touch spring 514 is provided between the lever 512 and the connecting seat 2. The light-touch spring 514 keeps the lever 512 in light contact with the connecting seat 2, preventing the gap between the lever 512 and the connecting seat 2 from being too large and causing the electromagnet 511 to fail to engage when energized. Before the locking pin slides out of the locking C-shaped buckle, the signal switch 513 triggers a signal to de-energize the electromagnet 511, causing it to lose its engaging force. The pin 53 can then slide out of the pin hole 52. That is, the door closer body acts on the second swing arm 4 to drive the pin 53 to slide out of the pin hole 52. Of course, when the door opening electromagnet 511 is energized and engaged, if the external force forcibly closing the door has a torque greater than the positioning force of the pin 53, it will also drive the lever 512 to swing, causing the pin 53 to disengage from the pin hole 52.

[0047] Furthermore, the middle part of the swing seat 3 is hinged to the connecting seat 2, and a locking C-shaped buckle 31 is formed on one side of the hinge position, and a pin hole 52 is formed on the other side of the hinge position. A return torsion spring 6 is provided between the swing seat 3 and the connecting seat 2. One end of the return torsion spring 6 abuts against the swing seat 3, and the other end of the return torsion spring 6 abuts against the connecting seat 2.

[0048] like Figure 3and Figure 8 As shown in the figure, another signal switch 513 can be arranged on the connecting shaft of the second swing arm 4 and the connecting seat 2, and the second swing arm 4 triggers the switch signal of the another signal switch 513 in the closed state of the door or window.

[0049] In other examples, as shown in the figure, the operating assembly 51 includes an adjusting screw 515 and a force spring 516, the connecting seat 2 is provided with a mounting through hole 21, the pin shaft 53 is partially protruding from the mounting through hole 21, the adjusting screw 515 is threadedly connected with the mounting through hole 21, and the force spring 516 is arranged in the mounting through hole 21 and abuts against one end of the adjusting screw 515 and the other end of the pin shaft 53. Figure 9

[0050] In order to further improve the positioning reliability, the pin hole 52 is arranged on the swing seat 3, and the swing seat 3 is provided with an electromagnet 511 on the side corresponding to the pin hole 52 to magnetically attract the pin shaft 53.

[0051] In use, the first swing arm 1 is connected with the door or window, and the second swing arm 4 is connected with the door closer main body, which can be the prior art and can be of various structures, and the specific structure is not described here. The second swing arm 4 is pivotally connected with the connecting seat 2 to form a first positioning point. When the first swing arm 1 rotates with the door or window, the locking column 41 of the second swing arm 4 pushes the swing seat 3 to swing and slide into the second positioning point in the locking C-shaped buckle 31. The locking mechanism 5 positions the connecting seat 2 and the swing seat 3 to be relatively fixed after the locking column 41 slides into the locking C-shaped buckle 31 to form a third positioning point. Therefore, the stable triangular structure is formed by the three positioning points, so that the door closer can stably keep the door or window in the open state, that is, the door closer can stably keep the door or window in the open state, and the reliability is good.

[0052] The second aspect of the present application provides a door closer, which comprises a connecting device, the first swing arm 1 of the connecting device is used for connecting the door or window, and the second swing arm 4 of the connecting device is connected with the door closer main body. The connecting device comprises the first swing arm 1, the connecting seat 2, the swing seat 3, the second swing arm 4 and the locking mechanism 5.

[0053] The first swing arm 1 is fixedly connected with the connecting seat 2. Alternatively, the first swing arm 1 can be fixedly connected with the connecting seat 2 in a separate manner. Specifically, a threaded hole is arranged on the connecting seat 2, and mounting claws are arranged on the periphery of the threaded hole. Correspondingly, the first swing arm 1 is provided with a mounting hole, and the mounting hole is also provided with mounting claws. A screw rod is threadedly connected with the threaded hole of the connecting seat 2 through the mounting hole of the first swing arm 1, and the two mounting claws are engaged with each other, so as to fixedly connect the first swing arm 1 with the connecting seat 2. The first swing arm 1 can be integrally fixedly connected with the connecting seat 2, that is, the connecting seat 2 is directly formed by extending the end portion of the first swing arm 1.

[0054] ​The swing seat 3 is swingably installed on the connecting seat 2, and the swing seat 3 is provided with a locking C-shaped buckle 31. Specifically, a rotating shaft can be arranged on the swing seat 3, and a rotating shaft hole is arranged on the connecting seat 2, and the swing seat 3 is swingably installed on the connecting seat 2 through cooperation of the rotating shaft and the rotating shaft hole, that is, the swing seat 3 is hinged to the connecting seat 2.

[0055] The second swing arm 4 is pivotally connected with the connecting seat 2 to form a first positioning point, and the second swing arm 4 is provided with a locking column 41 which is slid into the locking C-shaped buckle 31 to form a second positioning point. The locking column 41 is pushed to move the swing seat 3 during the process of being slid into the locking C-shaped buckle 31. Specifically, the sliding-in and sliding-out side of the opening end of the locking C-shaped buckle 31 is provided with an arc-shaped guide surface, so as to facilitate the sliding-in and sliding-out of the locking column 41 without being stuck. The sliding-in and sliding-out side of the opening end of the locking C-shaped buckle 31 protrudes from the other side, so that the locking column 41 is not easily slid out after being slid into the locking C-shaped buckle 31, thereby playing a further positioning role.

[0056] The locking mechanism 5 positions the connecting seat 2 and the swing seat 3 to be relatively fixed to form a third positioning point after the locking column 41 is slid into the locking C-shaped buckle 31, and the locking mechanism 5 releases the relative fixation of the connecting seat 2 and the swing seat 3 before the locking column 41 is slid out of the locking C-shaped buckle 31.

[0057] Optionally, the locking mechanism 5 includes an operating assembly 51, a pin hole 52 and a pin shaft 53. One of the pin hole 52 and the pin shaft 53 is arranged on the swing seat 3, and the other one of the pin hole 52 and the pin shaft 53 is arranged on the connecting seat 2. In this embodiment, the pin shaft 53 is arranged on the swing seat 3, and the pin hole 52 is arranged on the connecting seat 2. The operating assembly 51 is connected with the pin shaft 53, and the operating assembly 51 drives the pin shaft 53 to be inserted into the pin hole 52 to position the connecting seat 2 and the swing seat 3 to be relatively fixed after the locking column 41 is slid into the locking C-shaped buckle 31, and the operating assembly 51 drives the pin shaft 53 to be slid out of the pin hole 52 before the locking column 41 is slid out of the locking C-shaped buckle 31.

[0058] In some examples, the operating assembly 51 includes an electromagnet 511, a lever 512 and a signal switch 513. The electromagnet 511 is arranged on the connecting seat 2 and connected with the signal switch 513. The lever 512 is swingably arranged on the connecting seat 2, one end of the lever 512 can be magnetically attracted by the electromagnet 511, and the other end of the lever 512 is connected with the pin shaft 53. The signal switch 513 triggers a signal to the electromagnet 511 after the locking column 41 is slid into the locking C-shaped buckle 31. Specifically, when the locking column 41 is slid into the locking C-shaped buckle 31, the signal switch 513 is triggered at the same time, the lever 512 is swung by the electromagnet 511, the pin shaft 53 is driven to be inserted into the pin hole 52, so as to position the connecting seat 2 and the swing seat 3 to be relatively fixed.

[0059] The lever 512 is provided with a light touch spring 514 between the connecting seat 2; the signal switch 513 triggers a signal to the electromagnet 511 to close the electromagnet 511 before the locking column slides out of the locking C-shaped buckle; the lever 512 swings under the action of the light touch spring 514, and drives the pin shaft 53 to slide out of the pin hole 52.

[0060] Further, the middle part of the swing seat 3 is hinged with the connecting seat 2, and a locking C-shaped buckle 31 is formed on one side of the hinged position, and a pin hole 52 is formed on the other side of the hinged position. A reset torsion spring 6 is arranged between the swing seat 3 and the connecting seat 2, one end of the reset torsion spring 6 abuts against the swing seat 3, and the other end of the reset torsion spring 6 abuts against the connecting seat 2.

[0061] In other examples, the operation assembly 51 includes an adjusting screw 515 and a force spring 516, the connecting seat 2 is provided with a mounting through hole 21, the pin shaft 53 is partially protruding from the mounting through hole 21 when being arranged in the mounting through hole 21; the adjusting screw 515 is threadedly connected with the mounting through hole 21; the force spring 516 is arranged in the mounting through hole 21, one end of the force spring 516 abuts against the adjusting screw 515, and the other end of the force spring 516 abuts against the pin shaft 53.

[0062] In order to further improve the positioning reliability, the pin hole 52 is arranged on the swing seat 3, and the electromagnet 511 is arranged on the side of the swing seat 3 corresponding to the pin hole 52 to magnetically attract the pin shaft 53.

[0063] The door closer of the embodiment of the present application is used, the first swing arm 1 is connected with a door or a window, the second swing arm 4 is connected with the door closer body, the door closer body can be the prior art and can be various structures, and the specific structure is not described here; the second swing arm 4 is pivotally connected with the connecting seat 2 to form a first positioning point, when the first swing arm 1 rotates with the door or the window, the locking column 41 of the second swing arm 4 pushes the swing seat 3 to swing and slides into the second positioning point in the locking C-shaped buckle 31, and the locking mechanism 5 positions the connecting seat 2 and the swing seat 3 to be relatively fixed after the locking column 41 slides into the locking C-shaped buckle 31, to form a third positioning point. Therefore, the present application forms a stable triangular structure through three positioning points, so as to realize that the door closer stably keeps the door or the window in an open state, that is, the door closer can stably keep the door or the window in an open state, and the reliability is good.

[0064] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0065] In addition, the terms "first", "second", etc. are used only for the purpose of description and do not imply or imply relative importance or imply the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0066] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0067] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include the first and second features in direct contact, or the first and second features not in direct contact but in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0068] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application.

[0069] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A connecting device for a door closer, characterized in that The utility model provides a kind of adjustable positioning device, including: First swing arm, the first swing arm is fixedly connected with connecting seat; Swing seat, the swing seat is swingably installed on the connecting seat, and the swing seat is equipped with locking C-shaped buckle; Second swing arm, the second swing arm is pivotally connected with the connecting seat and forms first positioning point, and the second swing arm is equipped with locking column, the locking column is slid into the locking C-shaped buckle and forms second positioning point, and the locking column is slid into the locking C-shaped buckle and pushes the swing seat to move; Locking mechanism, the locking mechanism positions the connecting seat and the swing seat after the locking column is slid into the locking C-shaped buckle, and it is relatively fixed to form third positioning point, and the locking mechanism releases the relative fixation of the connecting seat and the swing seat before the locking column is slid out of the locking C-shaped buckle.

2. A connecting device for a door closer according to claim 1, characterised in that The locking mechanism includes operating assembly, pin hole and pin shaft;One of the pin hole and the pin shaft is arranged on the swing seat, and the other of the pin hole and the pin shaft is arranged on the connecting seat;The operating assembly is connected with the pin shaft, and the operating assembly drives the pin shaft to be inserted into the pin hole to position the connecting seat and the swing seat and make them relatively fixed after the locking column is slid into the locking C-shaped buckle, and the operating assembly drives the pin shaft to slide out of the pin hole before the locking column is slid out of the locking C-shaped buckle.

3. A connecting device for a door closer according to claim 2, characterised in that The operating assembly includes electromagnet, lever and signal switch;The electromagnet is arranged on the connecting seat and connected with the signal switch;The lever is swingably arranged on the connecting seat, one end of the lever can be magnetically attracted by the electromagnet, and the other end of the lever is connected with the pin shaft;The signal switch triggers a signal to the electromagnet after the locking column is slid into the locking C-shaped buckle, the lever is swung by the electromagnet, and the pin shaft is driven to be inserted into the pin hole.

4. A connecting device for a door closer according to claim 3, characterised in that The lever and the connecting seat are provided with a light touch spring;The signal switch triggers a signal to make the electromagnet lose the attraction force before the locking column is slid out of the locking C-shaped buckle, and the pin shaft can slide out of the pin hole.

5. A connecting device for a door closer according to claim 3, characterised in that The middle part of the swing seat is hinged with the connecting seat, one side of the hinge position forms the locking C-shaped buckle, and the other side of the hinge position forms the pin hole.

6. A connecting device for a door closer according to claim 3, characterised in that The swing seat and the connecting seat are provided with a reset torsional spring, one end of the reset torsional spring abuts against the swing seat, and the other end of the reset torsional spring abuts against the connecting seat.

7. A connecting device for a door closer according to claim 3, characterised in that The opening end of the locking C-shaped buckle, the locking column slides in and out of one side, is provided with an arc guide surface;The opening end of the locking C-shaped buckle, the locking column slides in and out of one side, protrudes from the other side.

8. A connecting device for a door closer according to claim 2, characterised in that The operating assembly includes adjusting screw and force spring, the connecting seat is provided with mounting through hole, and the pin shaft is partially protruded from the mounting through hole when being arranged in the mounting through hole;The adjusting screw is threadedly connected with the mounting through hole;The force spring is arranged in the mounting through hole, one end of the force spring abuts against the adjusting screw, and the other end of the force spring abuts against the pin shaft.

9. A connecting device for a door closer according to claim 8, characterised in that, The pin hole is arranged on the swing seat, and one side of the swing seat corresponding to the pin hole is provided with an electromagnet to magnetically attract the pin shaft.

10. A connecting device for a door closer according to claim 1, characterised in that, The first swing arm is fixedly connected with the connecting seat in a separate or integrated manner.

11. A door closer characterised in that, The connecting device according to any one of claims 1 to 10, wherein the first swing arm of the connecting device is used to connect a door or a window, and the second swing arm of the connecting device is connected to a door closer body.

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