Pressing handle structure capable of limiting angle and door and window system

Abstract

The utility model belongs to the technical field of doors and windows, and discloses a pressing handle structure capable of limiting angles and a door and window system. The pressing handle structure capable of limiting the angle comprises a handle, a base; a first shaft sleeve; and a second bushing. The door and window system comprises a driver and any one of the angle-limitable pressing handle structures. According to the pressing handle structure capable of limiting the angle, switching of different modes is achieved by controlling the protrusion to be matched with the through hole or the sliding groove, the second shaft sleeve can be driven to rotate by rotating the handle in the two modes, and therefore the driver is driven to move; due to the fact that the protrusion is limited by the limiting groove in the micro-ventilation mode, and the rotating angle of the handle is limited, curiosity of children can be met, potential safety hazards are reduced, and the handle is simple in structure and convenient to operate. The door and window system adopts a pressing handle structure capable of limiting angles, and has a micro ventilation mode and a normal opening mode.

Description

Technical Field

[0001] The utility model relates to the technical field of doors and windows, and in particular to a push handle structure with limited angle and a door and window system. Background Art

[0002] As the height of residential buildings increases, there are safety hazards if children open windows by themselves when at home. In order to prevent children from opening windows, the existing solutions are as follows: 1. Use safety handles; 2. Use micro-ventilation products; 3. Install guardrails.

[0003] Most safety handles on the market won't turn unless the safety is released. This inability to turn can fuel children's curiosity and competitiveness, leading them to forcefully operate the safety handle, potentially damaging it. Alternatively, they might learn how to do it by observing adults disengaging the safety, allowing them to open the window on their own. Micro-ventilation primarily limits the width of a window sash to prevent children from climbing out. However, all micro-ventilation products require a deactivation feature, which can be cumbersome, requiring either a child lock or specialized tools. Guardrails, which are bars installed directly on the window frame, completely block access to the outside, but are costly and can impede visibility.

[0004] Chinese patent CN117365191A discloses a push-type safety handle with an idle rotation function. This handle can be operated but cannot open the window by adding a rotating handle to open the window, thereby providing a relatively safe way to close the window. However, because the window sash remains stationary when the handle is idle, children are still curious about opening the window. Furthermore, this solution uses a structure such as an idle sleeve, resulting in a complex structure with many components. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, one of the purposes of the present invention is to provide a push-handle structure with a limited angle, which realizes the switching of different modes by controlling the coordination of the protrusion with the through hole or the slide groove. When the protrusion cooperates with the through hole, it is the micro-ventilation mode, that is, the children's mode, and when the protrusion cooperates with the slide groove, it is the normal opening mode. The above two modes can drive the second shaft sleeve to rotate by rotating the handle, thereby driving the transmission to move; since the protrusion is limited by the limit groove in the micro-ventilation mode, the rotation angle of the handle is limited. In this way, it can satisfy children's curiosity and reduce safety hazards, and the structure is simple and easy to operate.

[0006] The second object of the present utility model is to provide a door and window system, which adopts a pressing handle structure with limited angle, and has a micro-ventilation mode and a normal opening mode. Both of the above two modes can drive the second bushing to rotate by rotating the handle, thereby driving the actuator to control the door and window system; since the protrusion is limited by the limiting groove in the micro-ventilation mode, the rotation angle of the handle is limited. In this way, it can not only satisfy the curiosity of children, but also reduce potential safety hazards.

[0007] The first object of the present utility model is achieved by the following technical solutions:

[0008] A pressing handle structure with limited angle, comprising:

[0009] A handle;

[0010] A base, an installation cavity is arranged inside the base, and a limiting groove arranged along the first direction is arranged in the installation cavity;

[0011] A first bushing, the first bushing is arranged in the installation cavity of the base, the first bushing is rotatably connected to the base, a sliding groove and a through hole arranged along the second direction are arranged on the first bushing, and the sliding groove and the through hole communicate with each other;

[0012] A second bushing, the second bushing is embedded inside the first bushing, and one end of the second bushing passes through the first bushing and is integrally connected to the handle, the other end of the second bushing is used to connect the actuator of the door and window system, the second bushing is slidably connected to the first bushing, and a protrusion for cooperating with the through hole or the sliding groove is arranged on the second bushing;

[0013] When the protrusion cooperates with the through hole, the protrusion passes through the through hole and is slidably connected to the limiting groove, and rotating the handle drives the first bushing and the second bushing to rotate within the range of the limiting groove;

[0014] When the handle is pressed so that the protrusion cooperates with the sliding groove, the protrusion disengages from the limiting groove, and rotating the handle drives the first bushing and the second bushing to rotate outside the range of the limiting groove.

[0015] In a preferred embodiment, the first direction is the circumferential direction of the first bushing, and the second direction is the axial direction of the second bushing.

[0016] In a preferred embodiment, the pressing handle structure with limited angle further includes a first elastic element, the first elastic element is sleeved outside the second bushing, and the first elastic element is arranged between the base and the handle, one end of the first elastic element abuts against the handle, and the other end of the first elastic element abuts against the base;

[0017] The first elastic element drives the handle away from the base so that the protrusion cooperates with the through hole;

[0018] Press the handle close to the base so that the protrusion cooperates with the sliding groove.

[0019] In a preferred embodiment, the first elastic element is a spring.

[0020] In a preferred embodiment, the base includes a base body and a cover. The installation cavity is arranged inside the base body. A sandwich layer is formed between the cover and the base body. A positioning structure is arranged in the sandwich layer. The positioning structure includes a first positioning groove, a positioning post, and a second elastic element. The first positioning groove is arranged radially. The second elastic element is arranged horizontally in the first positioning groove. One end of the second elastic element abuts against the first positioning groove, and the other end of the second elastic element is connected to the positioning post.

[0021] The positioning structure is arranged on the side of the first sleeve. At least one second positioning groove is arranged on the outer peripheral side of the first sleeve. The second elastic element presses the positioning post into the corresponding second positioning groove.

[0022] In a preferred embodiment, the second elastic element is a spring.

[0023] In a preferred embodiment, the base further includes a retaining ring. The retaining ring is arranged outside the cover. One end of the first elastic element abuts against the handle, and the other end of the first elastic element abuts against the retaining ring.

[0024] In a preferred embodiment, a first connection hole for cooperating with the second sleeve is arranged inside the first sleeve. The first connection hole is a polygonal hole. The outside of the second sleeve is polygonal in shape, so that the second sleeve drives the first sleeve to rotate.

[0025] A clearance fit is provided between the first sleeve and the second sleeve. The second sleeve can slide up and down relative to the first sleeve, and the protrusion can slide up and down along the chute.

[0026] In a preferred embodiment, the angle-limiting pressing handle structure further includes a locking screw. A second connection hole for cooperating with the locking screw is arranged on the second sleeve. The locking screw passes through the second connection hole to connect and fix the second sleeve and the handle.

[0027] The second object of the present invention is achieved by the following technical solutions:

[0028] A door and window system includes a transmission and the angle-limiting pressing handle structure according to any one of the above, and the second sleeve is in transmission connection with the transmission.

[0029] In summary, the present invention has the following technical effects:

[0030] 1. In the press handle structure with limited angle of the present utility model, different mode switches are achieved through the cooperation of the control protrusion with the through hole or the sliding groove. When the protrusion cooperates with the through hole, it is in the micro-ventilation mode, that is, the child mode. When the protrusion cooperates with the sliding groove, it is in the normal opening mode. Both of the above two modes can drive the second shaft sleeve to rotate by turning the handle, thereby driving the actuator to move. Since the protrusion is limited by the limiting groove in the micro-ventilation mode, the rotation angle of the handle is limited. In this way, it can not only satisfy the curiosity of children, but also reduce potential safety hazards, and has a simple structure and convenient operation.

[0031] 2. The door and window system of the present utility model adopts a press handle structure with limited angle, which has a micro-ventilation mode and a normal opening mode. Both of the above two modes can drive the second shaft sleeve to rotate by turning the handle, thereby driving the actuator to control the door and window system. Since the protrusion is limited by the limiting groove in the micro-ventilation mode, the rotation angle of the handle is limited. In this way, it can not only satisfy the curiosity of children, but also reduce potential safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is the external structure schematic diagram of the press handle structure with limited angle according to the embodiment of the present utility model;

[0033] Figure 2 is the exploded structure schematic diagram of the press handle structure with limited angle according to the embodiment of the present utility model;

[0034] Figure 3 is the structure schematic diagram of the first shaft sleeve of the press handle structure with limited angle according to the embodiment of the present utility model;

[0035] Figure 4 is the structure schematic diagram of the second shaft sleeve of the press handle structure with limited angle according to the embodiment of the present utility model;

[0036] Figure 5 is the structure schematic diagram of the seat body of the press handle structure with limited angle according to the embodiment of the present utility model;

[0037] Figure 6 is the structure schematic diagram of the first use state of the first shaft sleeve, the second shaft sleeve and the locking screw of the press handle structure with limited angle according to the embodiment of the present utility model;

[0038] Figure 7 is the structure schematic diagram of the second use state of the first shaft sleeve, the second shaft sleeve and the locking screw of the press handle structure with limited angle according to the embodiment of the present utility model;

[0039] Figure 8 is the partial internal structure schematic diagram of the first use state of the press handle structure with limited angle according to the embodiment of the present utility model;

[0040] Figure 9Schematic diagram of a partial internal structure in the second use state of the angle-limiting press handle structure according to an embodiment of the present utility model;

[0041] Figure 10 Schematic diagram of the structure where the protrusion of the angle-limiting press handle structure according to an embodiment of the present utility model is located in the middle of the limit groove;

[0042] Figure 11 Schematic diagram of the structure where the protrusion of the angle-limiting press handle structure according to an embodiment of the present utility model is located at the first extreme position of the limit groove;

[0043] Figure 12 Schematic diagram of the structure where the protrusion of the angle-limiting press handle structure according to an embodiment of the present utility model is located at the second extreme position of the limit groove;

[0044] Figure 13 Schematic diagram of the structure of the window and door system in the locked state according to an embodiment of the present utility model;

[0045] Figure 14 Schematic diagram of the structure of the window and door system in the micro-ventilation mode according to an embodiment of the present utility model;

[0046] Figure 15 Schematic diagram of the structure of the window and door system in the normal opening mode according to an embodiment of the present utility model.

[0047] Among them, the meanings of the reference numerals are as follows:

[0048] 10. Handle, 20. Base, 201. Seat body, 202. Cover, 203. Pressing ring, 204. Sealing plate, 30. Limit groove, 40. First bushing, 50. Slide groove, 60. Through hole, 70. Second bushing, 80. Protrusion, 90. First elastic element, 100. Positioning structure, 1001. First positioning groove, 1002. Positioning post, 1003. Second elastic element, 110. Second positioning groove, 120. Locking screw, 130. First connection hole, 140. Second connection hole, 150. Third connection hole, 160. Actuator, 170. Connecting shaft, 180. Window frame, 190. Window sash, 200. First locking structure, 210. Second locking structure. Detailed implementation manners

[0049] For better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0050] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0052] Referring to Figures 1 - 12 , the present utility model discloses a pressing handle structure with an angle limit, including: a handle 10; a base 20, an installation cavity is arranged inside the base 20, and a limiting groove 30 arranged along a first direction is arranged in the installation cavity; a first bushing 40, the first bushing 40 is arranged in the installation cavity of the base 20, the first bushing 40 is rotatably connected to the base 20, a chute 50 and a through hole 60 arranged along a second direction are arranged on the first bushing 40, and the chute 50 and the through hole 60 are communicated with each other; a second bushing 70, the second bushing 70 is embedded inside the first bushing 40, and one end of the second bushing 70 passes through the first bushing 40 and is integrally connected to the handle 10, the other end of the second bushing 70 is used to connect a transmission 160 of a door and window system, the second bushing 70 is slidably connected to the first bushing 40, and a protrusion 80 for cooperating with the through hole 60 or the chute 50 is arranged on the second bushing 70; when the protrusion 80 cooperates with the through hole 60, the protrusion 80 passes through the through hole 60 and is slidably connected to the limiting groove 30, and rotating the handle 10 drives the first bushing 40 and the second bushing 70 to rotate within the range of the limiting groove 30; when pressing the handle 10 to make the protrusion 80 cooperate with the chute 50, the protrusion 80 disengages from the limiting groove 30, and rotating the handle 10 drives the first bushing 40 and the second bushing 70 to rotate outside the range of the limiting groove 30.

[0053] It should be noted that it is set that when the protrusion 80 cooperates with the through hole 60, it is in the micro-ventilation mode, and when the protrusion 80 cooperates with the chute 50, it is in the normal opening mode; when the protrusion 80 disengages from the limiting groove 30, rotating the handle 10 drives the first bushing 40 and the second bushing 70 to rotate 360 degrees along the central axis of the handle 10. For the purpose of cooperating with the transmission 160 of the door and window system, taking the handle 10 rotating 90 degrees and 180 degrees around its central axis as an example for illustration.

[0054] Set the initial state when the handle 10 is placed downward. In the initial state, the door and window system is in a locked state. At this time, the window sash 190 cannot be opened. At this time, the handle 10 and the second bushing 70 are located above the first bushing 40, and the protrusion 80 passes through and cooperates with the limit groove 30; when the handle 10 rotates counterclockwise 90 degrees from the initial state, the protrusion 80 is limited by the limit groove 30 and cannot continue to rotate counterclockwise. At this time, the transmission bar of the actuator 160 cannot continue to move. At this time, it is the micro-ventilation mode, that is, the child mode. By cooperating with the actuator 160, the window sash 190 can only be partially opened; when the handle 10 is pressed and the handle 10 rotates counterclockwise 180 degrees from the initial state, at this time, the handle 10 and the second bushing 70 move downward relative to the first bushing 40, the protrusion 80 disengages from the limit groove 30, and the protrusion 80 enters the chute 50 from the through hole 60 position and cooperates with the chute 50. The handle 10, the first bushing 40 and the second bushing 70 rotate together. At this time, the rotation of the handle 10 is not restricted. By cooperating with the actuator 160, the window sash 190 can be fully opened, which is the normal opening mode.

[0055] The structure of the angle-limited pressing handle in the present utility model realizes the switching of different modes by controlling the cooperation of the protrusion 80 with the through hole 60 or the chute 50. When the protrusion 80 cooperates with the through hole 60, it is the micro-ventilation mode. When the protrusion 80 cooperates with the chute 50, it is the normal opening mode. In the above two modes, the handle 10 can be rotated to drive the second bushing 70 to rotate, thereby driving the actuator 160 to move; since the protrusion 80 is limited by the limit groove 30 in the micro-ventilation mode, the rotation angle of the handle 10 is limited. In this way, it can not only satisfy the curiosity of children, but also reduce potential safety hazards, and has a simple structure and convenient operation.

[0056] Preferably, when the handle 10 is in the initial state, the protrusion 80 is located in the middle of the limit groove 30. In this way, the handle 10 can rotate counterclockwise or clockwise. Of course, the rotation direction of the handle 10, the rotation angle of the handle 10 and the radian size of the limit groove 30 are based on being able to cooperate with the actuator 160 of the door and window system to realize the micro-ventilation mode of partial opening and the normal opening mode of full opening.

[0057] In the embodiment of the present utility model, the first direction is the circumferential direction of the first bushing 40, and the second direction is the axial direction of the second bushing 70.

[0058] In an embodiment of the present utility model, the angle-limiting pressing handle structure further includes a first elastic element 90. The first elastic element 90 is sleeved outside the second sleeve 70, and the first elastic element 90 is arranged between the base 20 and the handle 10. One end of the first elastic element 90 abuts against the handle 10, and the other end of the first elastic element 90 abuts against the base 20; the first elastic element 90 urges the handle 10 away from the base 20 so that the protrusion 80 cooperates with the through hole 60; when the handle 10 is pressed close to the base 20, the protrusion 80 cooperates with the chute 50.

[0059] In an embodiment of the present utility model, the first elastic element 90 is a spring.

[0060] That is to say, in the initial state, under the elastic force of the first elastic element 90, the handle 10 and the second sleeve 70 move away from the base 20. The handle 10 drives the second sleeve 70 to move upward relative to the first sleeve 40. The protrusion 80 moves along the chute 50 to the position of the through hole 60, and the protrusion 80 passes through the through hole 60 and cooperates with the limiting groove 30; in the micro-ventilation mode, the user directly rotates the handle 10, and the handle 10, the first sleeve 40 and the second sleeve 70 rotate together, thereby driving the protrusion 80 to rotate in the limiting groove 30. At this time, the rotation angle of the handle 10 is limited; in the normal opening mode, the user simultaneously presses the handle along the axial direction of the handle 10 and rotates the handle 10 around the central axis of the handle 10. The handle 10 drives the first sleeve 40 to move downward relative to the second sleeve 70. The protrusion 80 disengages from the limiting groove 30, and the protrusion 80 enters the chute 50 from the position of the through hole 60 and cooperates with the chute 50. The handle 10, the first sleeve 40 and the second sleeve 70 rotate together. At this time, the rotation of the handle 10 is not restricted, and the handle 10 can rotate at any angle around its central axis.

[0061] In an embodiment of the present utility model, the base 20 includes a base body 201 and a cover 202. The installation cavity is arranged inside the base body 201. A sandwich layer is formed between the cover 202 and the base body 201. A positioning structure 100 is arranged in the sandwich layer. The positioning structure 100 includes a first positioning groove 1001, a positioning column 1002 and a second elastic element 1003. The first positioning groove 1001 is arranged radially. The second elastic element 1003 is arranged horizontally in the first positioning groove 1001. One end of the second elastic element 1003 abuts against the first positioning groove 1001, and the other end of the second elastic element 1003 is connected to the positioning column 1002; the positioning structure 100 is arranged on the side of the first sleeve 40. At least one second positioning groove 110 is arranged on the outer peripheral side of the first sleeve 40. The second elastic element 1003 presses the positioning column 1002 into the corresponding second positioning groove 110.

[0062] Preferably, two positioning structures 100 may be provided. The two positioning structures 100 are respectively arranged on both sides of the first bushing 40, so as to form an opposed position to the first bushing 40. Four second positioning grooves 110 may be provided. The four second positioning grooves 110 are evenly spaced; both the positioning post 1002 and the second positioning groove 110 are arc-shaped. When the first bushing 40 rotates, the positioning post 1002 can enter and exit the second positioning groove 110, avoiding interference of the positioning structure 100 with the rotation of the handle 10, the first bushing 40 and the second bushing 70; the setting of the positioning structure 100 is beneficial to the temporary positioning of the first bushing 40 at a predetermined angle. When the force for rotating the handle 10 reaches a predetermined value, the first bushing 40 is separated from the positioning structure 100.

[0063] In the embodiment of the present invention, the second elastic element 1003 is a spring.

[0064] In the embodiment of the present invention, the base 20 further includes a pressing ring 203. The pressing ring 203 is arranged outside the cover 202. One end of the first elastic element 90 abuts against the handle 10, and the other end of the first elastic element 90 abuts against the pressing ring 203.

[0065] In the embodiment of the present invention, a first connection hole 130 for cooperating with the second bushing 70 is arranged inside the first bushing 40. The first connection hole 130 is a polygonal hole, and the outside of the second bushing 70 is polygonal, so that the second bushing 70 drives the first bushing 40 to rotate together; there is a clearance fit between the first bushing 40 and the second bushing 70, and the second bushing 70 can slide up and down relative to the first bushing 40, and the protrusion 80 can slide up and down along the chute 50.

[0066] In the embodiment of the present invention, the angle-limiting pressing handle structure further includes a locking screw 120. A second connection hole 140 for cooperating with the locking screw 120 is arranged on the second bushing 70. The locking screw 120 passes through the second connection hole 140 to connect and fix the second bushing 70 and the handle 10.

[0067] It should be noted that a third connection hole 150 for passing through the first bushing 40 and the second bushing 70 is arranged on the base 20, so that the first bushing 40 and the second bushing 70 can be installed and connected to the seat body 201.

[0068] Refer to Figures 13 - 15 , the present invention discloses a door and window system, including a transmission 160 and the angle-limiting pressing handle structure of any one of the above. The second bushing 70 is in transmission connection with the transmission 160.

[0069] It should be noted that the actuator 160 includes a transmission bar and a lifting element. The cam structure is in transmission connection with the connecting shaft 170 and the transmission bar. The rotation of the connecting shaft 170 drives the lifting element to rotate, thereby driving the transmission bar to move up and down. The lifting element can be a cam or a gear. By using the lifting element, the distance of the up and down movement of the transmission bar is controlled through the rotation angles of the handle 10, the second bushing 70, and the connecting shaft 170. How to achieve the control of the up and down movement distance of the transmission bar through the rotation angles of the handle 10, the second bushing 70, and the connecting shaft 170 by using the lifting element can be achieved by existing technologies, which will not be elaborated here.

[0070] The door and window system further includes a window frame 180, a window sash 190, a first locking structure 200, and a second locking structure 210. The window sash 190 cooperates with the window frame 180. The first locking structure 200 and the second locking structure 210 are used to lock the transmission bar of the actuator 160 on the window frame 180. The first locking structure 200 is arranged above the second locking structure 210. Both the first locking structure 200 and the second locking structure 210 are arranged between the window frame 180 and the transmission bar.

[0071] When the handle 10 is rotated by a certain degree from its initial state, driving the transmission bar to move downward from its initial state to its first predetermined position, the first locking structure 200 is unlocked and the second locking structure 210 is locked, and the window sash 190 can be pushed open by a certain distance to achieve the micro-ventilation mode; when the handle 10 is rotated by a certain degree from its initial state, driving the transmission bar to move downward from its initial state to its second predetermined position, both the first locking structure 200 and the second locking structure 210 are unlocked, and the window sash 190 can be fully opened to achieve the normal opening mode.

[0072] Specifically, both the first locking structure 200 and the second locking structure 210 can adopt existing technologies. For example, the first locking structure 200 can adopt an existing sliding groove locking point structure, and the second locking structure 210 can adopt an existing sliding groove pull rod structure. Due to the adoption of the sliding groove pull rod structure, when the first locking structure 200 is unlocked and the second locking structure 210 is locked, the window sash 190 can still be pushed out. During the process of pushing out the window sash 190, the sliding groove pull rod structure rotates and extends, but limited by the extension stroke, the window sash 190 can only be partially opened; the specific working process of the sliding groove pull rod structure can refer to existing technologies, which will not be elaborated here.

[0073] The door and window system in the present utility model adopts a press handle structure with limited angle, having a micro-ventilation mode and a normal opening mode. Both of the above two modes can drive the second bushing 70 to rotate by rotating the handle 10, thereby driving the actuator 160 to control the door and window system; since the protrusion 80 is limited by the limiting groove 30 in the micro-ventilation mode, the rotation angle of the handle 10 is limited. In this way, it can not only satisfy the curiosity of children but also reduce potential safety hazards.

[0074] The technical means disclosed by the solution of the utility model are not limited to those disclosed by the above embodiments, and also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art, without departing from the principle of the utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the utility model.

Claims

1. A pressing handle structure with an angle limit, characterized in that, Comprising: Door handle; Base, an installation cavity is arranged inside the base, and a limiting groove arranged along a first direction is arranged in the installation cavity; First bushing, the first bushing is arranged in the installation cavity of the base, the first bushing is rotatably connected with the base, a chute and a through hole arranged along a second direction are arranged on the first bushing, and the chute communicates with the through hole; Second bushing, the second bushing is embedded inside the first bushing, and one end of the second bushing passes through the first bushing and is integrally connected with the door handle, the other end of the second bushing is used for connecting a transmission of a door and window system, the second bushing is slidably connected with the first bushing, and a protrusion for cooperating with the through hole or the chute is arranged on the second bushing; When the protrusion cooperates with the through hole, the protrusion passes through the through hole and is slidably connected with the limiting groove, and rotating the door handle drives the first bushing and the second bushing to rotate within the range of the limiting groove; When pressing the door handle to make the protrusion cooperate with the chute, the protrusion disengages from the limiting groove, and rotating the door handle drives the first bushing and the second bushing to rotate outside the range of the limiting groove.

2. The angle-limiting pressing handle structure according to claim 1, wherein: The first direction is the circumferential direction of the first bushing, and the second direction is the axial direction of the second bushing.

3. The angle-limiting pressing handle structure according to claim 1, characterized in that: It further comprises a first elastic element, the first elastic element is sleeved outside the second bushing, and the first elastic element is arranged between the base and the door handle, one end of the first elastic element abuts against the door handle, and the other end of the first elastic element abuts against the base; The first elastic element drives the door handle to be away from the base so that the protrusion cooperates with the through hole; Press the door handle close to the base so that the protrusion cooperates with the chute.

4. The angle-limiting pressing handle structure according to claim 3, wherein: The first elastic element is a spring.

5. The angle-limiting pressing handle structure according to claim 3, characterized in that: The base comprises a seat body and a cover, the installation cavity is arranged inside the seat body, a sandwich layer is formed between the cover and the seat body, a positioning structure is arranged in the sandwich layer, the positioning structure comprises a first positioning groove, a positioning post and a second elastic element, the first positioning groove is arranged along the radial direction, the second elastic element is horizontally arranged in the first positioning groove, one end of the second elastic element abuts against the first positioning groove, and the other end of the second elastic element is connected with the positioning post; The positioning structure is arranged on the side of the first bushing, at least one second positioning groove is arranged on the outer peripheral side of the first bushing, and the second elastic element presses the positioning post into the corresponding second positioning groove.

6. The angle-limiting pressing handle structure according to claim 5, characterized in that: The second elastic element is a spring.

7. The angle-limiting pressing handle structure according to claim 5, characterized in that: The base further comprises a retaining ring, the retaining ring is arranged outside the cover, one end of the first elastic element abuts against the door handle, and the other end of the first elastic element abuts against the retaining ring.

8. The angle-limiting pressing handle structure according to claim 1, wherein: A first connection hole for cooperating with the second bushing is arranged inside the first bushing, the first connection hole is a polygonal hole, and the outer part of the second bushing is polygonal so that the second bushing drives the first bushing to rotate; A clearance fit is provided between the first bushing and the second bushing. The second bushing can slide up and down relative to the first bushing, and the protrusion can slide up and down along the chute.

9. The angle-limiting pressing handle structure according to claim 1, wherein: It further includes a locking screw. A second connection hole for cooperating with the locking screw is provided on the second bushing. The locking screw passes through the second connection hole to connect and fix the second bushing to the handle.

10. A door and window system, characterized in that: It includes a transmission and a press handle structure with an angle limit as described in any one of claims 1-9. The second bushing is in transmission connection with the transmission.

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