Opening and closing device

Abstract

The utility model discloses an opening and closing device which comprises a driving unit and a connecting rod, the driving unit is used for being installed on a fixed part, one end of the connecting rod is hinged to the driving unit, the other end of the connecting rod is used for being hinged to a movable part, and the driving unit is used for pushing and pulling the connecting rod to open or close the movable part. The limiting device is used for being installed on the fixed part, and when the limiting device is matched with the connecting rod, the movable part is limited. When the sliding seat moves towards the right side, the movable part is closed, and then the telescopic part of the limiting device is matched with the connecting rod, so that the movable part is limited, and the movable part cannot shake after being closed.

Description

Technical Field

[0001] This utility model relates to the field of opening or closing devices, and in particular to an opening and closing device. Background Technology

[0002] If a door or window needs to open or close automatically, an opening and closing device needs to be installed on the door or window. Existing opening and closing devices have the problem of loosening after the door or window is closed, requiring manual operation of the lock to close again, which is inconvenient. In order to solve this problem, an opening and closing device of this application was designed.

[0003] A search revealed that Chinese patent document CN109083558A discloses an inwardly tilting door / window. This involves using a drive motor to rotate a lead screw, which in turn drives a sliding mechanism to move along the lead screw, pushing or pulling a connecting rod upwards or downwards to automatically open and close the hinged window, saving time and effort. However, after the window is closed, because the connecting rod is roughly parallel to the window, the pulling force exerted by the connecting rod in the vertical inward direction on the window is relatively small, and there is still a gap between the hinges. Therefore, the window may become loose after closing. Utility Model Content

[0004] The purpose of this utility model is to provide an opening and closing device. By installing a limiting device, when the movable part is closed, the limiting device and the connecting rod cooperate to limit the movable part, thereby solving the problem of looseness after the movable part is closed.

[0005] To achieve the above objectives, this utility model provides an opening and closing device, including a drive unit and a connecting rod. The drive unit is mounted on a fixed part, one end of the connecting rod is hinged to the drive unit, and the other end is hinged to a movable part. The drive unit is used to push and pull the connecting rod to open or close the movable part. The device also includes a limiting device, which is mounted on the fixed part. When the limiting device cooperates with the connecting rod, it locks the movable part.

[0006] The drive unit includes a lead screw, a motor, and a sliding seat. The sliding seat is threaded onto the lead screw. One end of the lead screw is connected to the output shaft of the motor. An extension shaft is provided on the sliding seat, and the connecting rod is hinged to the extension shaft. In use, the motor is fixed to the fixed part, and the other end of the lead screw is rotatably connected to the fixed part.

[0007] The motor is mounted on the first support, and the output shaft of the motor is connected to one end of the lead screw through a coupling. The other end of the lead screw is rotatably connected to the second support. In use, both the first and second supports are fixedly mounted to the fixed part.

[0008] The first and second supports are installed inside the housing. An elongated hole is provided on one side of the housing, and the protruding shaft extends out of the elongated hole and is then hinged to the connecting rod. The limiting device is installed inside the housing.

[0009] It also includes an ear mount, which is used to fix it to the movable part and is hinged to the connecting rod.

[0010] The connecting rod is provided with a limit hole. When the movable part is closed, the telescopic part of the limit device extends out and inserts into the limit hole.

[0011] When the movable part is closed, the telescopic part of the limiting device extends out and abuts against the connecting rod on one side of the movable part.

[0012] A wedge-shaped platform is provided on the lower side of the connecting rod that abuts against the telescopic part.

[0013] The connecting rod includes a first connecting segment and a second connecting segment. The first connecting segment is longer than the second connecting segment. The first connecting segment and the second connecting segment are connected and form an obtuse angle. The first connecting segment is hinged to the drive unit, and the second connecting segment is used to hinge to the movable part. A limiting hole is provided on the second connecting segment.

[0014] The connecting rod includes a first connecting segment and a second connecting segment. The first connecting segment is longer than the second connecting segment. The first connecting segment and the second connecting segment are connected and form an obtuse angle. The first connecting segment is hinged to the drive unit. The second connecting segment is used to hinge to the movable part. The telescopic part abuts against the second connecting segment on one side of the movable part.

[0015] Compared with the prior art, this utility model has the following technical effects:

[0016] 1. The limiting device of this utility model is used to be installed on the fixed part. When the limiting device cooperates with the connecting rod, it limits the movable part. In the first embodiment, a limiting hole is provided on the connecting rod. When the movable part is closed, the telescopic part of the limiting device extends and inserts into the limiting hole. When the sliding seat moves to the right, it closes the movable part. Then, the telescopic part of the limiting device is inserted into the limiting hole, thereby limiting the movable part. The movable part will not wobble after it is closed.

[0017] 2. In the second embodiment of this utility model, when the movable part is closed, the telescopic part of the limiting device extends out and abuts against the connecting rod on one side of the movable part, thereby limiting the movable part so that it will not shake after the movable part is closed.

[0018] 3. Based on the second embodiment, a wedge-shaped platform is provided on the lower side of the connecting rod that abuts against the telescopic part. When the sliding seat moves to the right, the movable part is closed, and then the telescopic part of the limiting device extends and abuts against the wedge-shaped platform, further pushing the connecting rod upward, so that the movable part abuts tightly against the fixed part. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0020] Figure 1 This is a diagram showing the usage state of this utility model.

[0021] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of AA.

[0022] Figure 3 This is a schematic diagram of the structure of the first embodiment of the present utility model.

[0023] Figure 4 This is a schematic diagram showing the state of the activated part when the first embodiment of this utility model is adopted.

[0024] Figure 5 This is a schematic diagram of the structure of the second embodiment of the present utility model.

[0025] Figure 6 This is a schematic diagram showing the closed state of the active part when using the second embodiment of the present invention.

[0026] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure of BB.

[0027] Figure label:

[0028] Fixed part 1, movable part 2;

[0029] Lead screw 10, first support 11, second support 12, coupling 13;

[0030] Motor 20;

[0031] Sliding seat 30, extending shaft 31;

[0032] Link 40, first connecting section 41, second connecting section 42, limiting hole 43, wedge platform 44;

[0033] Ear base 50;

[0034] 60 for the casing, 61 for the elongated hole;

[0035] Limiting device 70, telescopic part 71. Detailed Implementation

[0036] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0037] Example 1:

[0038] See Figure 1-4 An opening and closing device includes a drive unit and a connecting rod 40. The drive unit is mounted on a fixed part 1. One end of the connecting rod 40 is hinged to the drive unit, and the other end is hinged to a movable part 2. The drive unit is used to push and pull the connecting rod 40 to open or close the movable part 2. The device also includes a limiting device 70, which is mounted on the fixed part 1. When the limiting device 70 cooperates with the connecting rod 40, it locks the movable part 2.

[0039] In this embodiment, see Figure 3 The drive unit includes a lead screw 10, a motor 20, and a sliding seat 30. The sliding seat 30 is threaded onto the lead screw 10. One end of the lead screw 10 is connected to the output shaft of the motor 20. An extension shaft 31 is provided on the sliding seat 30, and the connecting rod 40 is hinged to the extension shaft 31. In use, the motor 20 is fixedly mounted to the fixing part 1, and the other end of the lead screw 10 is rotatably connected to the fixing part 1. Specifically, the end of the connecting rod 40 is provided with a hinge hole, which is fitted onto the extension shaft 31. A cotter pin is inserted into the extension shaft 31 to limit the position of the connecting rod 40.

[0040] Furthermore, the motor 20 is mounted on the first support 11, and the output shaft of the motor 20 is connected to one end of the lead screw 10 through the coupling 13. The other end of the lead screw 10 is rotatably connected to the second support 12. In use, both the first support 11 and the second support 12 are fixedly mounted to the fixing part 1.

[0041] For ease of installation, please refer to Figure 3 , 4 The first support 11 and the second support 12 are installed inside the housing 60. An elongated hole 61 is provided on one side of the housing 60. The protruding shaft 31 extends out of the elongated hole 61 and is then hinged to the connecting rod 40. The limiting device 70 is installed inside the housing 60. During production, the first support 11, the second support 12, the lead screw 10, the motor 20, and the sliding seat 30 can all be pre-assembled into the housing 60. During installation, the housing 60 is simply bolted to the fixing part 1. The elongated hole 61 also serves to guide and limit the extension shaft 31.

[0042] For details, see Figure 2 It also includes an ear seat 50, which is used to fix it to the movable part 2. The ear seat 50 is hinged to the connecting rod 40. The ear seat 50 is preferably a double-ear structure, and the connecting rod 40 is inserted between the double-ear structure. The ear seat 50 and the connecting rod 40 are hinged by a pin.

[0043] See Figure 2 , 4 The connecting rod 40 is provided with a limit hole 43. When the movable part 2 is closed, the telescopic part 71 of the limit device 70 extends out and inserts into the limit hole 43.

[0044] In this embodiment, when the housing 60 is not provided, the limiting device 70 is installed on the fixing part 1; when the housing 60 is provided, the limiting device 70 is installed inside the housing 60.

[0045] In this embodiment, the limiting device 70 can be an electric cylinder or an electric actuator. For example, a miniature electric actuator with a rated voltage of 12V. When the limiting device 70 is installed inside the housing 60, the housing 60 is provided with a clearance hole at the position corresponding to the telescopic part 71. The telescopic part 71 is the telescopic rod of the electric cylinder or the electric actuator.

[0046] See Figure 2 , combined Figure 3 When the sliding seat 30 moves to the right, it closes the movable part 2. Then, the telescopic part 71 of the limiting device 70 is inserted into the limiting hole 43, thereby limiting the movable part 2.

[0047] Specifically, see Figure 2 The connecting rod 40 includes a first connecting segment 41 and a second connecting segment 42. The first connecting segment 41 is longer than the second connecting segment 42. The first connecting segment 41 and the second connecting segment 42 are connected and form an obtuse angle. The first connecting segment 41 is hinged to the drive unit, and the second connecting segment 42 is hinged to the movable part 2. The limiting hole 43 is provided on the second connecting segment 42.

[0048] exist Figure 3 In order to facilitate the insertion of the telescopic part 71 into the limiting hole 43, the end of the telescopic part 71 is provided with a chamfer, and the limiting hole 43 is provided with a flared structure on the side facing the telescopic part 71.

[0049] In this embodiment, see Figure 3 The limiting device 70 is located at one end of the lead screw 10.

[0050] Example 2:

[0051] The difference from Example 1 is that, see [link to example]. Figure 5 , 6 When the movable part 2 is closed, the telescopic part 71 of the limiting device 70 extends out and abuts against the connecting rod 40 on one side of the movable part 2.

[0052] Further, see Figure 7 A wedge-shaped platform 44 is provided on the lower side of the connecting rod 40 that abuts against the telescopic part 71. When the sliding seat 30 moves to the right, the movable part 2 is closed, and then the telescopic part 71 of the limiting device 70 extends and abuts against the wedge-shaped platform 44, engaging... Figure 6 Further push the connecting rod 40 upwards, so that the movable part 2 is pressed tightly against the fixed part 1.

[0053] Specifically, the connecting rod 40 includes a first connecting segment 41 and a second connecting segment 42. The first connecting segment 41 is longer than the second connecting segment 42. The first connecting segment 41 and the second connecting segment 42 are connected and form an obtuse angle. The first connecting segment 41 is hinged to the drive unit, and the second connecting segment 42 is hinged to the movable part 2. The telescopic part 71 abuts against the second connecting segment 42 on one side of the movable part 2.

[0054] In this embodiment, see Figure 5 The limiting device 70 is located on the lower side of the lead screw 10. It should be noted that there is a certain space between the lead screw 10 and the bottom of the housing, so that the installation of the limiting device 70 does not affect the movement of the sliding seat 30 on the lead screw.

[0055] The method of use or principle of this utility model:

[0056] For ease of understanding of this application, in this embodiment, the fixed part 1 is a window frame, the movable part 2 is a window sash, and the movable part 2 is hinged to the fixed part 1. The housing 60 of the opening and closing device is mounted on the fixed part 1, and the connecting rod 40 is hinged to the movable part 2 through the lug 50.

[0057] In the first embodiment, see Figure 2 , 3 4. When the sliding seat 30 moves to the right, the movable part 2 is closed. Then, the telescopic part 71 of the limiting device 70 is inserted into the limiting hole 43, thereby limiting the movable part 2.

[0058] In the second embodiment, see Figure 5 , 6 7. When the sliding seat 30 moves to the right, the movable part 2 is closed. Then the telescopic part 71 of the limiting device 70 extends and abuts against the wedge-shaped platform 44, further pushing the connecting rod 40 upward, so that the movable part 2 abuts tightly against the fixed part 1.

[0059] When the movable part 2 is to be opened, the telescopic part 71 of the limiting device 70 retracts first, the motor 20 drives the lead screw 10 to rotate, the sliding seat 30 moves to the left, and pushes the movable part 2 open through the connecting rod 40.

Claims

1. An opening and closing device, comprising a driving unit for being mounted on a fixed part (1) and a connecting rod (40) hinged at one end to the driving unit and at the other end to a movable part (2), the driving unit being arranged to push and pull the connecting rod (40) in order to open or close the movable part (2), characterized in that the connecting rod (40) is arranged to be pushed and pulled in a direction substantially parallel to the plane of the movable part (2) and in that the connecting rod (40) is arranged to be pushed and pulled in a direction substantially perpendicular to the plane of the movable part (2). Further comprising a limiting device (70) for mounting on the fixed part (1), the limiting device (70) locks the movable part (2) when cooperating with the connecting rod (40).

2. A closure device according to claim 1, wherein: The driving unit comprises a screw rod (10), a motor (20) and a sliding seat (30), the sliding seat (30) is threadedly connected to the screw rod (10), one end of the screw rod (10) is connected with the output shaft of the motor (20), the sliding seat (30) is provided with an extension shaft (31), and the connecting rod (40) is hinged with the extension shaft (31); in use, the motor (20) is fixedly mounted with the fixed part (1), and the other end of the screw rod (10) is rotatably connected with the fixed part (1).

3. An opening and closing device according to claim 2, characterised in that: The motor (20) is mounted on the first support (11), the output shaft of the motor (20) is connected with one end of the screw rod (10) through a shaft coupling (13), and the other end of the screw rod (10) is rotatably connected with the second support (12); in use, the first support (11) and the second support (12) are fixedly mounted with the fixed part (1).

4. An opening and closing device according to claim 3, characterized in that: The first support (11) and the second support (12) are mounted in the housing (60), one side of the housing (60) is provided with a long hole (61), and the extension shaft (31) extends out of the long hole (61) and is then hinged with the connecting rod (40); the limiting device (70) is mounted in the housing (60).

5. An opening and closing device according to claim 1, characterized in that: Further comprising an ear seat (50), the ear seat (50) is fixedly mounted on the movable part (2), and the ear seat (50) is hinged with the connecting rod (40).

6. A closure device according to any one of claims 1-5, wherein: The connecting rod (40) is provided with a limiting hole (43), and in the closed state of the movable part (2), the telescopic part (71) of the limiting device (70) extends and inserts into the limiting hole (43).

7. A closure device according to any one of claims 1-5, wherein: In the closed state of the movable part (2), the telescopic part (71) of the limiting device (70) extends, and the telescopic part (71) abuts against one side of the connecting rod (40) located on the movable part (2).

8. An opening and closing device according to claim 7, characterized in that: The connecting rod (40) is provided with a wedge-shaped table (44) below the side abutting against the telescopic part (71).

9. An opening and closing device according to claim 6, characterized in that: The connecting rod (40) comprises a first connecting section (41) and a second connecting section (42), the first connecting section (41) is longer than the second connecting section (42), the first connecting section (41) and the second connecting section (42) are connected and form an obtuse angle, the first connecting section (41) is hinged with the driving unit, the second connecting section (42) is used for being hinged with the movable part (2), and the limiting hole (43) is arranged on the second connecting section (42).

10. An opening and closing device according to claim 7, characterized in that: The connecting rod (40) comprises a first connecting section (41) and a second connecting section (42), the first connecting section (41) is longer than the second connecting section (42), the first connecting section (41) and the second connecting section (42) are connected and form an obtuse angle, the first connecting section (41) is hinged with the driving unit, the second connecting section (42) is used for being hinged with the movable part (2), and the telescopic part (71) abuts against one side of the second connecting section (42) located on the movable part (2).

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