Handle opening and closing guide structure of crank lock
By adopting two-stage regular guidance in the handle opening and closing guide structure of the handle lock, and using the high and low guide surfaces to cooperate with the positioning plane, the problem of jamming or skewing of the handle is solved, and the handle is accurately snapped and flexible.
Patent Information
- Application Number
- CN202421367099.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-06-14
AI Technical Summary
The handle of the existing shaking lock is prone to jamming or skew during opening and closing operation, which causes the handle to pop out the handle slot normally.
The handle opening and closing guide structure is adopted with a two-stage regular guide. By setting a high-position guide surface and a low-position guide surface on the lock shell, it cooperates with the positioning plane at different stages to form a smaller and larger matching gap to ensure the accurate buckle and flexible movement of the handle.
It effectively avoids the handle being stuck in the handle slot, ensures the position accuracy and operation stability of the handle, and avoids the problem of skewed handle.
Smart Images
Figure CN222649689U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a lock, more specifically to a positioning and guiding structure for a handle on a crank lock during opening and closing operations. Background Art
[0002] The lock shell of the existing crank lock is provided with a handle groove, and a rotating shaft is provided in the shaft hole of the shaft seat in the handle groove, and a pivot part is provided at one end of the handle, and the pivot part has two pivot ears arranged oppositely, the rotating shaft is inserted between the two pivot ears, and the pivot ear is installed on the rotating shaft via the pivot, the pivot ear has a positive end, and the inner side of the positive end has a positioning plane, and a positive groove corresponding to the positive end of the two pivot ears is provided on the shaft seat, and the positive groove has a guide surface matching the positioning plane. After the handle is rotated a certain angle in the direction of buckling into the handle groove, the positive end of the pivot ear is inserted into the positive groove, and the positioning plane is limited and guided by the guide surface to ensure that the handle is buckled into the handle groove accurately. However, since the positioning plane and the guide surface on the handle are in relative sliding contact, the positioning plane and the guide surface are in clearance fit. If the clearance is too small, it is easy to cause the handle to get stuck in the handle groove and cannot pop out of the handle groove. Therefore, the clearance design between the positioning plane and the guide surface is often too large, resulting in the problem of handle skew. Summary of the invention
[0003] The purpose of the utility model invention is to overcome the defects of the prior art, and to provide a handle opening and closing guide structure of a crank lock, which adopts a two-stage positive guidance and has stable and reliable operation of the handle.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A handle opening and closing guide structure of a crank lock, comprising a lock shell and a handle, wherein a pivoting portion at one end of the handle has two pivoting ears arranged opposite to each other, the two pivoting ears have aligning ends, the inner sides of the two aligning ends have positioning planes, the lock shell has a handle groove, a rotating shaft seat is arranged in the handle groove, a rotating shaft is installed in the seat hole of the rotating shaft seat, the pivoting ear is installed on the rotating shaft, a aligning guide groove corresponding to the aligning ends of the two pivoting ears is arranged on the side of the seat hole of the rotating shaft seat, a guide surface matching the positioning plane is arranged in the aligning guide groove, the aligning end has a guide surface arranged in the aligning guide groove and the positioning plane passes through the guide surface The guiding stroke for guiding the handle to swing along the correct position is characterized in that the guiding surface comprises a high-position guiding surface and a low-position guiding surface arranged along the correct position guiding stroke, and the correct position guiding stroke comprises a first guiding stroke for guiding the positioning plane via the high-position guiding surface, and a second guiding stroke for guiding the positioning plane via the low-position guiding surface, and the first guiding stroke and the second guiding stroke are arranged along the swinging direction of the handle buckled into the handle groove, and the high-position guiding surface is higher than the low-position guiding surface, so that the fitting clearance between the high-position guiding surface and the positioning plane is smaller than the fitting clearance between the low-position guiding surface and the positioning plane.
[0006] Preferably, the length of the high-position guide surface is shorter than the length of the low-position guide surface.
[0007] By adopting the above technical scheme, during the process of the handle being buckled into the handle slot, after the handle swings to a certain angle, the positive end portion enters the positive guide stroke, the positioning plane first cooperates with the high-position guide surface, and the positioning plane and the high-position guide surface cooperate with each other with a smaller clearance, thereby reducing the space where the handle may be skewed, thereby ensuring that the handle is accurately and reliably buckled into the handle slot; as the handle continues to be buckled into the handle slot, the positive end portion enters the second guide stroke, the positioning plane cooperates with the low-position guide surface until the handle is completely buckled into the handle slot, and the positioning plane and the low-position guide surface adopt a relatively large fitting clearance (relative to the fitting clearance between the positioning plane and the high-position guide surface), thereby ensuring that the handle is flexible; when the handle pops out of the handle slot, when the positioning plane of the handle contacts the high-position guide surface, the handle has already popped out a certain distance, thereby preventing the handle from being stuck in the handle slot.
[0008] The utility model is further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 This is a schematic diagram of the structure of the crank lock of the utility model;
[0010] Figure 2 This is a schematic diagram of the structure of the lock housing of the utility model;
[0011] Figure 3 It is a structural schematic diagram of the handle of the utility model. DETAILED DESCRIPTION
[0012] See attached Figures 1 to 3The utility model discloses a handle opening and closing guide structure of a crank lock, comprising a lock housing 1 and a handle 2, wherein the pivoting portion at one end of the handle 2 has two pivoting ears 21 arranged opposite to each other, the two pivoting ears 21 have positive end portions 211, and the inner sides of the two positive end portions 211 have positioning planes 2111, the lock housing 1 has a handle groove 11, a rotating shaft seat 12 is arranged in the handle groove 11, a rotating shaft 3 is installed in the seat hole of the rotating shaft seat 12, and the pivoting ear 21 is installed on the rotating shaft 3, A positive guide groove 13 is provided on the side of the seat hole of the rotating shaft seat 12, which is matched with the positive end portions 211 of the two pivot ears 21 in a one-to-one manner. A guide surface matched with the positioning plane 2111 is provided in the positive guide groove 13. After the handle 2 is buckled into the handle groove 11 at a certain angle, the positive end portion 211 is swung into the positive guide groove 13, and the positioning plane 2111 cooperates with the guide surface to ensure that the handle is facing the handle groove 13. The positive end portion 211 has a positive guide groove 13 and a positioning plane 2111. 2111 is guided by the guide surface and swings along with the handle 2 in a positive position guiding stroke. The guide surface 2111 includes a high-position guiding surface 131 and a low-position guiding surface 132 arranged along the positive position guiding stroke. Correspondingly, the positive position guiding stroke includes a first guiding stroke in which the positioning plane 2111 is guided by the high-position guiding surface 131, and a second guiding stroke in which the positioning plane 2111 is guided by the low-position guiding surface 132. The first guiding stroke and the second guiding stroke are arranged along the swinging direction of the handle 2 being buckled into the handle slot 11. In this way, when the handle is buckled into the handle slot, after the handle 2 swings a certain angle, the positioning plane 2111 on the handle 2 first cooperates with the high-position guiding surface 131, and then enters the corresponding position of the low-position guiding surface 132. The high-position guiding surface 131 is higher than the low-position guiding surface 132, so that the fitting clearance between the high-position guiding surface 131 and the positioning plane 2111 is smaller than the fitting clearance between the low-position guiding surface 132 and the positioning plane 2111. Based on the description of the utility model, the specific matching clearance can be obtained by those skilled in the art after limited experiments. The length of the high-position guide surface 131 is smaller than the length of the low-position guide surface 132 .
[0013] Compared with the traditional single plane to guide the handle in the correct position, the utility model adopts a two-stage guiding design. When the handle 2 is buckled into the handle groove 11, it is first guided by the high-position guiding surface 131. The positioning plane 2111 on the handle 2 and the high-position guiding surface 131 are matched with a small gap, thereby limiting the space for the handle 2 to swing crookedly, ensuring that the handle position is accurate and reliable, and avoiding the handle from being crooked. Afterwards, the positioning plane 2111 and the low-position guiding surface 132 cooperate to ensure that the handle is flexible. When the handle pops out, when the handle 2 contacts the high-position guiding surface 131, the handle 2 has already popped out of the handle groove 11 to a certain height, and the handle 2 can be operated and used normally, avoiding the handle from being stuck in the handle groove. Thereby solving the problem of handle crookedness under the traditional single guiding plane.
Claims
1. A handle opening and closing guide structure of a crank lock, comprising a lock shell and a handle, wherein the pivoting portion at one end of the handle has two pivoting ears arranged opposite to each other, the two pivoting ears have positing ends, the inner sides of the two positing ends have positioning planes, the lock shell has a handle groove, a rotating shaft seat is arranged in the handle groove, a rotating shaft is installed in the seat hole of the rotating shaft seat, the pivoting ear is installed on the rotating shaft, a positing guide groove corresponding to the positing ends of the two pivoting ears is arranged on the side of the seat hole of the rotating shaft seat, a guide surface matching the positioning plane is arranged in the positing guide groove, the positing end has a positing guide stroke placed in the positing guide groove and the positioning plane is guided by the guide surface to swing with the handle, and the characteristics are as follows: The guide surface includes a high-position guide surface and a low-position guide surface arranged along the positive-position guide stroke, and the corresponding positive-position guide stroke includes a first guide stroke in which the positioning plane is guided by the high-position guide surface, and a second guide stroke in which the positioning plane is guided by the low-position guide surface, and the first guide stroke and the second guide stroke are arranged along the swinging direction of the handle buckled into the handle groove, and the high-position guide surface is higher than the low-position guide surface, so that the fitting clearance between the high-position guide surface and the positioning plane is smaller than the fitting clearance between the low-position guide surface and the positioning plane.
2. The handle opening and closing guide structure of the crank lock according to claim 1, characterized in that: The length of the high-position guide surface is smaller than the length of the low-position guide surface.