Limiting handle

Abstract

The utility model relates to the technical field of door and window accessories, in particular to a limiting handle which comprises a handle seat, a shifting fork, a limiting assembly and a handle body. A sliding groove and a clamping groove are formed in the handle base, the handle is rotated to drive the shifting fork to move along the sliding groove, and therefore the door and window opening and closing function is achieved. Wherein the limiting assembly has an initial position and a limiting position; when the limiting assembly is located at the initial position, the limiting assembly does not interfere with the shifting fork and can move left and right, and at the moment, the rotation angle of the handle is 180 degrees. When the limiting assembly is located at the limiting position, the limiting assembly is connected with the clamping groove in a clamped mode to limit one-way displacement of the shifting fork, and at the moment, the rotation angle of the handle is 90 degrees. By adjusting the position of the limiting assembly, the handle can be flexibly switched between 180 degrees and 90 degrees, and the handle is easy to adjust; and two rotating angles are provided, so that the stock pressure can be reduced, and various requirements of customers are met.

Description

Technical Field

[0001] The utility model relates to the technical field of door and window accessories, in particular to a position limiting handle. Background Art

[0002] Handles are accessories used on doors and windows, working in conjunction with other door and window accessories to open and close them. To accommodate both casement and bottom-hung windows, handles are often designed to open 180°. However, for casement windows, a 90° opening is sufficient for daily use. Existing handles on the market are fixed with either a 180° or 90° opening angle, failing to accommodate both. This makes them difficult to meet customer needs. Utility Model Content

[0003] Based on this, the purpose of the present invention is to provide a limit handle.

[0004] The utility model adopts the following technical solutions:

[0005] The cam is adapted to engage the locking cam of the lever arm and engage the locking cam of the lever arm when the lever is in a locked position and the locking cam engages the locking cam of the lever arm when the lever is in a locked position.

[0006] Preferably, the limiting assembly includes a limiting rivet with one end fixedly connected to the handle base, and a limiting block sleeved on the outside of the limiting rivet; the limiting block rotates around the axis of the limiting rivet to make the limiting assembly in the initial position or the limiting position.

[0007] Preferably, the limiting block includes a movable part sleeved on the outside of the limiting rivet, and a limiting arm connected to the side wall of the movable part; the movable part rotates around the axis of the limiting rivet so that the limiting arm is engaged with or separated from the slot.

[0008] Preferably, the width of the slot is greater than the width of the limiting arm.

[0009] Preferably, the limiting assembly further includes an elastic member arranged between the limiting rivet and the limiting block; a top cap is provided on the side of the limiting rivet facing away from the handle base; one end of the elastic member is connected to the top cap, and the other end of the elastic member is connected to the limiting block.

[0010] Preferably, a transmission assembly is further included, and the transmission assembly is provided between the handle and the shift fork to realize transmission between the handle and the shift fork.

[0011] Preferably, the transmission assembly includes a transmission member; the transmission member is provided with gear teeth at one end close to the fork, and the fork is provided with teeth on the side facing the transmission member, and the gear teeth are engaged with the teeth; the transmission member is connected to the handle at one end away from the fork.

[0012] Preferably, the transmission member is provided with a plug-in portion near one end of the handle, the handle is provided with a plug-in hole, and the outer wall of the plug-in portion and the inner wall of the plug-in hole are both provided with a level position; the plug-in portion is plugged into the plug-in hole to realize the synchronous rotation of the handle and the transmission member.

[0013] Preferably, the transmission assembly further includes a locking member, which passes through the transmission member and has one end connected to the handle to lock the handle and the transmission member.

[0014] Preferably, an abutment block is extended from one end of the transmission member away from the handle; the side of the shift fork facing the transmission member is provided with a first top block and a second top block that are symmetrically distributed; when the shift fork moves along the slide groove, the abutment block is located between the first top block and the second top block.

[0015] The beneficial effects of the utility model are:

[0016] The limit handle involved in the utility model comprises a handle base, a shift fork, a limit assembly and a handle; a slide groove and a clamping groove are provided on the handle base, and the handle is rotated to drive the shift fork to move along the slide groove to realize the opening and closing function of doors and windows; wherein the limit assembly has an initial position and a limit position; when the limit assembly is at the initial position, the limit assembly has no interference with the shift fork and can be displaced left and right, and the rotation angle of the handle is 180° at this time; when the limit assembly is at the limit position, the limit assembly is engaged with the clamping groove to limit the unidirectional displacement of the shift fork, and the rotation angle of the handle is 90° at this time; by adjusting the position of the limit assembly, the handle can be flexibly switched between 180° and 90°, and the handle is simple to adjust; having two rotation angles can reduce inventory stocking pressure and meet the diverse needs of customers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of the limit handle of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the limit handle of the utility model after the base pad is hidden;

[0019] Figure 3 for Figure 1 Schematic diagram of the structural explosion of the limiting component;

[0020] Figure 4 for Figure 1 A schematic diagram of the structure of the transmission parts;

[0021] Figure 5 This is a schematic diagram of the state of the limit handle of the utility model when it is in the initial position;

[0022] Figure 6 This is a schematic diagram of the state of the limit handle of the utility model when it is in the limit position;

[0023] Figure 7 for Figure 5 Cross-sectional view along AA;

[0024] Figure 8 for Figure 7 A magnified schematic diagram of the local structure of the middle circle B.

[0025] Numbers in the figure:

[0026] 10-handle base; 11-slide groove; 12-cage slot; 13-placement slot; 14-installation slot; 15-connection hole; 16-decorative cover; 17-base pad;

[0027] 20-shift fork; 21-tooth; 22-first top block; 23-second top block;

[0028] 30-limiting assembly; 31-limiting rivet; 311-top cap; 32-limiting block; 321-movable part; 322-limiting arm; 33-elastic member;

[0029] 40-handle; 41-connection hole;

[0030] 50-transmission assembly; 51-transmission member; 511-gear teeth; 512-connecting portion; 513-abutment block; 52-locking member; 53-compression spring; 54-washer. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] In the description of this utility model, it should be noted that the terms "vertical," "upper," "lower," and "horizontal," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, direct connections, connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0034] like Figures 1 to 8 The figure shows a position limiting handle of the present invention, which is used for opening and closing doors and windows. The position limiting handle includes a handle base 10, a shift fork 20, a position limiting assembly 30, and a handle 40 rotatably connected to one side of the handle base 10. The side of the handle base 10 facing away from the handle 40 is provided with a slide groove 11 extending along its length, and the side of the handle base 10 facing away from the handle 40 is provided with a slot 12 extending along its width. The shift fork is slidably connected to the slide groove 11 and is connected to the handle 40. Rotating the handle 40 can drive the shift fork to slide along the slide groove 11, thereby realizing the opening and closing of doors and windows. The position limiting assembly 30 is rotatably connected to the side of the handle base 10 facing away from the handle 40.

[0035] The limiting component 30 has an initial position and a limiting position; Figure 5 As shown, when the limit assembly 30 is in the initial position, the limit assembly 30 is separated from the slot 12, the limit assembly 30 has no interference with the fork, and the fork can move left and right along the slide slot 11. At this time, the rotation angle of the handle 40 is 180°. Figure 6 As shown, when the limiting assembly 30 is in the limiting position, the limiting assembly 30 is engaged in the card slot 12, and one end of the limiting assembly 30 extends into the slide slot 11, thereby limiting the unidirectional movement of the fork 20. At this time, the rotation angle of the handle 40 is 90°.

[0036] When shipping, the limit handle of the present invention is in the initial position. If the rotation angle needs to be switched, the limit assembly 30 is lifted and rotated 90° so that the limit assembly 30 is snapped into the slot 12, thereby completing the switching of the rotation angle. The adjustment is simple and efficient, and it has two rotation angles. On the one hand, it can meet customer needs, and on the other hand, it can reduce inventory stocking pressure.

[0037] See also Figure 2 The handle base 10 is provided with a placement slot 13 for accommodating the limit assembly 30. The placement slot 13 extends along the length of the handle base 10. The placement slot 13 is arranged in parallel with the slide slot 11, and the locking slot 12 is located between the placement slot 13 and the slide slot 11. A mounting slot 14 is provided in the center of the handle base 10. The side of the mounting slot 14 is connected to the slide slot 11. A connecting hole 15 is provided on the side of the handle base 10 near the handle 40, which is connected to the mounting slot 14. In addition, a decorative cover 16 is provided on the end of the handle base 10 facing the handle 40, which improves the appearance. A bottom pad 17 is provided on the end of the handle base 10 facing away from the handle 40 to protect the internal components.

[0038] See also Figure 3 、 Figure 7 and Figure 8 The limiting assembly 30 includes a limiting rivet 31, a limiting block 32, and an elastic member 33; one end of the limiting rivet 31 is riveted to the handle base 10 to achieve fixation, the limiting block 32 is sleeved on the outside of the limiting rivet 31, and the elastic member 33 is arranged between the limiting rivet 31 and the limiting block 32. A top cap 311 is provided on the side of the limiting rivet 31 facing away from the handle base 10, one end of the elastic member 33 is connected to the top cap 311, and the other end of the elastic member 33 is connected to the limiting block 32. Specifically, the limiting block 32 includes a movable part 321 sleeved on the outside of the limiting rivet 31, and a limiting arm 322 connected to the side wall of the movable part 321. The elastic member 33 is specifically a compression spring. It should be noted that the width of the slot 12 is greater than the width of the limiting arm 322.

[0039] like Figure 5 and Figure 8As shown, when the limit assembly 30 is in the initial position, the limit assembly 30 is entirely received in the placement slot 13, and the rotation angle of the handle 40 is 180°. At this time, the elastic member 33 applies an elastic force toward the handle seat 10 to the limit block 32, so that the limit block 32 will abut against the side wall of the placement slot 13 and thus cannot rotate. The above structure can prevent the limit assembly 30 from rotating autonomously due to loosening during the use of the handle 40, thereby improving the structural stability. When the rotation angle needs to be switched, the limit block 32 needs to be lifted and the elastic member 33 compressed so that the limit arm 322 is higher than the side wall of the placement slot 13; at this time, the limit block 32 can be driven to rotate around the limit rivet 31 so that the limit arm 322 is aligned with the slot 12. After releasing the hand, the elastic force of the elastic member 33 causes the limit arm 322 to be stuck in the slot 12, thereby limiting the unidirectional movement of the shift fork 20.

[0040] See also Figure 1 、 Figure 4 、 Figure 7 , further comprising a transmission assembly 50, which is disposed within the connection hole 15 and is connected at both ends to the handle 40 and the shift fork 20, respectively. The transmission assembly 50 is used to achieve transmission between the handle 40 and the shift fork 20. The transmission assembly 50 comprises a transmission member 51 and a locking member 52. The transmission member 51 is provided with a gear tooth 511 on the end near the shift fork 20, and the shift fork 20 is provided with a meshing tooth 21 on the side facing the transmission member 51, with the gear tooth 511 meshing with the meshing tooth 21. The transmission member 51 is provided with a plug-in portion 512 on the end near the handle 40, and the handle 40 is provided with a plug-in hole 41. The outer wall of the plug-in portion 512 and the inner wall of the plug-in hole 41 are both provided with a flat position, and the plug-in portion 512 is plugged into the plug-in hole 41. In this embodiment, the locking member 52 is a screw. Due to the horizontal position, the handle 40 and the transmission member 51 rotate synchronously. In addition, the gear teeth 511 of the transmission member 51 mesh with the teeth 21 , so the rotation of the transmission member 51 can drive the shift fork 20 to move along the slide groove 11 .

[0041] During assembly, the transmission member 51 is passed through the handle base 10, with the gear teeth 511 positioned within the mounting groove 14. The insertion hole 41 of the handle 40 is then aligned with the insertion portion 512 of the transmission member 51 and inserted. Finally, the locking member 52 is inserted. The locking member 52 passes through the transmission member 51 and one end is connected to the handle 40, thus locking the handle 40 and the transmission member 51. Furthermore, a compression spring 53 and a washer 54 are sheathed around the outside of the transmission member 51. After assembly, the compression spring 53 and washer 54 are located within the mounting groove 14, enhancing the connection stability.

[0042] Furthermore, an abutment block 513 is provided on the end of the transmission member 51 extending away from the handle 40, and a first top block 22 and a second top block 23 are symmetrically distributed on the side of the fork 20 facing the transmission member 51; after assembly is completed, the abutment block 513 is located between the first top block 22 and the second top block 23; when the fork 20 moves to a certain distance, the abutment block 513 will abut against the first top block 22 or the second top block 23, so that the fork 20 cannot continue to move, which can limit the moving distance of the fork 20, thereby preventing the fork 20 from disengaging from the transmission member 51 and affecting the normal opening and closing of doors and windows.

[0043] Compared with the prior art, the limit handle involved in the present utility model includes a handle base 10, a fork 20, a limit assembly 30 and a handle 40; a slide groove 11 and a clamping groove 12 are provided on the handle base 10, and the handle 40 is rotated to drive the fork 20 to move along the slide groove 11 to realize the opening and closing function of the door and window; wherein the limit assembly 30 has an initial position and a limit position; when the limit assembly 30 is in the initial position, the limit assembly 30 has no interference with the fork 20 and can be displaced left and right. At this time, the rotation angle of the handle 40 is 180°; when the limit assembly 30 is in the limit position, the limit assembly 30 is engaged with the clamping groove 12 to limit the unidirectional displacement of the fork 20. At this time, the rotation angle of the handle 40 is 90°; by adjusting the position of the limit assembly 30, the handle 40 can be flexibly switched between 180° and 90°, and the handle 40 is simple to adjust; having two rotation angles can reduce inventory stocking pressure and meet the diverse needs of customers.

[0044] The above merely represents the preferred technical solution of the present invention. While the description is relatively specific and detailed, it should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the concept of the present invention, and the present invention is intended to encompass such modifications and variations.

Claims

1. A limit handle, characterized in that: The cam is adapted to engage the locking cam of the lever arm and engage the locking cam of the lever arm when the lever is in a locked position and the locking cam engages the locking cam of the lever arm, the locking cam of the lever arm being adapted to engage the locking cam of the lever arm when the lever is in a locked position.

2. The limit handle according to claim 1, characterized in that: The limiting assembly includes a limiting rivet with one end fixedly connected to the handle base, and a limiting block sleeved on the outside of the limiting rivet; the limiting block rotates around the axis of the limiting rivet to make the limiting assembly in an initial position or a limiting position.

3. The limit handle according to claim 2, characterized in that: The limiting block includes a movable portion sleeved on the outside of the limiting rivet and a limiting arm connected to the side wall of the movable portion; the movable portion rotates around the axis of the limiting rivet to enable the limiting arm to be engaged with or separated from the slot.

4. The limit handle according to claim 3, characterized in that: The width of the slot is greater than the width of the limiting arm.

5. The limit handle according to claim 2, characterized in that: The limiting assembly also includes an elastic member arranged between the limiting rivet and the limiting block; a top cap is provided on the side of the limiting rivet away from the handle base; one end of the elastic member is connected to the top cap, and the other end of the elastic member is connected to the limiting block.

6. The limit handle according to claim 1, characterized in that: It also includes a transmission assembly, which is arranged between the handle and the shift fork to achieve transmission between the handle and the shift fork.

7. The limit handle according to claim 6, characterized in that: The transmission assembly includes a transmission member; a gear tooth is provided at one end of the transmission member close to the shift fork, and a meshing tooth is provided on the side of the shift fork facing the transmission member, and the gear tooth is meshed with the meshing tooth; an end of the transmission member away from the shift fork is connected to the handle.

8. The limit handle according to claim 7, characterized in that: The transmission member is provided with a plug-in portion near one end of the handle, and the handle is provided with a plug-in hole. The outer wall of the plug-in portion and the inner wall of the plug-in hole are both provided with a level position; the plug-in portion is plugged into the plug-in hole to realize the synchronous rotation of the handle and the transmission member.

9. The limit handle according to claim 6, characterized in that: The transmission assembly further includes a locking member, which passes through the transmission member and has one end connected to the handle to lock the handle and the transmission member.

10. The limit handle according to claim 6, characterized in that: An abutment block is provided on one end of the transmission member extending away from the handle; a first top block and a second top block are symmetrically distributed on the side of the shift fork facing the transmission member; when the shift fork moves along the slide groove, the abutment block is located between the first top block and the second top block.

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