A hollow handle for a lever handle lockset
By using a limiting and fixing component to initially limit the lock shaft in the lever-type lock handle, welding and grinding are avoided, which solves the problems of high cost and uneven material caused by integral solid casting, and achieves cost reduction and service life improvement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGSHAN FEIGE ELECTRIC CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-07
AI Technical Summary
Existing lever-type lock handles are made of solid casting, which results in high material consumption, high cost, uneven material distribution, complex welding connections, high cost, and reduced strength at the joints.
The system employs a limiting and fixing component, including a fixing part and a limiting part. The locking shaft is initially limited by the limiting shaft hole, and the fixing part is embedded in the drive column housing, avoiding welding and grinding processes, reducing assembly and processing costs. The lock cylinder is limited and fixed at both ends of the drive column housing to ensure uniform force distribution.
It achieves convenient and reliable lock shaft fixing, reduces costs, and extends the service life of lock cylinders and lever-type lock hollow handles.
Smart Images
Figure CN224468928U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of lock handle technology, and specifically relates to a hollow handle for a lever-type lock. Background Technology
[0002] Conventional metal lever-type lock handles are typically made using a single solid casting process, which consumes a significant amount of metal, resulting in higher costs. Furthermore, the solid casting process can lead to uneven material distribution across the handle, affecting its rotation. To address these issues, those skilled in the art have proposed a hollow handle solution for lever-type locks. This solution includes a handle body and a limiting component housing fitted within the handle body. The handle body has a through hole facing the lock cylinder of the lock body, connecting the external space and the internal space of the handle body. The limiting component housing is coaxially mounted within the through hole, with one edge of the limiting component housing welded to the opening of the through hole. Excess weld protrusions are then ground smooth. The lock cylinder extends from the opening of the through hole into the limiting component housing for fixation. However, connecting the handle body and the limiting component housing by welding is complex to manufacture, results in poor product consistency, increases assembly costs, and adds to the processing costs of surface treatment of the welded joint. It may also reduce the strength of the connection between the handle body and the limiting component housing, hindering the widespread adoption of hollow handles. Utility Model Content
[0003] The main purpose of this utility model is to provide a hollow handle for a lever-type lock, wherein the limiting and fixing component includes: a fixing part and a limiting part integrally formed with the fixing part. The limiting part is embedded in the handle body, and the fixing part is embedded in the drive column housing through the position where the handle body communicates with the drive column housing. The end of the drive column housing facing the lock body is recessed inward to form a mounting groove. The bottom of the mounting groove is provided with a limiting shaft hole. One end of the lock cylinder passes through the limiting shaft hole and is fixed to the fixing part. The above solution uses a limiting shaft hole to initially limit the lock cylinder, and then uses a limiting fixing component to further fix the lock cylinder. This method is convenient, quick, and secure, avoiding the need for welding the handle body to the limiting component housing and the subsequent grinding process. This reduces assembly costs and further lowers processing costs. Moreover, by limiting and fixing the lock cylinder at both ends of the drive column housing, the hollow handle of the lever-handle lock ensures that the lock cylinder is subjected to uniform force during operation, thereby extending the service life of both the lock cylinder and the hollow handle of the lever-handle lock and promoting the adoption of hollow handles for lever-handle locks.
[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0005] A hollow handle for a lever-type lock includes: a handle housing and a limiting and fixing member disposed within the handle housing. The handle housing includes: a handle body and a drive column housing extending from one side of the handle body toward the lock body and communicating with the internal space of the handle body. The limiting and fixing member includes: a fixing part and a limiting part integrally formed with the fixing part. The limiting part is embedded in the handle body, and the fixing part is embedded in the drive column housing through a position where the handle body communicates with the drive column housing. One end of the drive column housing facing the lock body is recessed inward to form a mounting groove. The bottom of the mounting groove has a limiting shaft hole, and one end of the lock cylinder passes through the limiting shaft hole and is fixed to the fixing part.
[0006] As a preferred embodiment of the hollow handle of the lever-type lock, the edge of the fixing part extends upward to form a first abutting protrusion. The first abutting protrusion abuts against the inner wall at the junction of the handle body and the drive column housing, thereby increasing the abutting area of the fixing part against the inner wall at the junction of the handle body and the drive column housing.
[0007] As a preferred embodiment of the hollow handle of the lever-type lock, the first abutting protrusions on both sides of the fixing part are hollowed out to form a wire-passing groove. The power cord inside the handle body passes through the wire-passing groove and the lock cylinder in sequence and then connects to the lock body.
[0008] As a preferred embodiment of the hollow handle of the lever-type lock, the bottom of the fixing part is provided with a fixing groove. After the lock cylinder abuts against the bottom of the fixing part, one end of the lock cylinder is embedded in the fixing groove. The bottom of the fixing groove is provided with a fixing through hole. The fixing screw passes through the fixing through hole and extends into one end of the lock cylinder for fixing.
[0009] As a preferred embodiment of the hollow handle of the lever-type lock, the two sides of the limiting part extend upward to form a second abutting protrusion. The second abutting protrusion abuts against the inner side wall of the handle body, thereby increasing the abutting area of the limiting part against the inner side wall of the handle body.
[0010] As a preferred embodiment of the hollow handle of the lever-type lock, the second abutting protrusion is welded to the inner side wall of the handle body.
[0011] As a preferred embodiment of the hollow handle of the lever-type lock, the cross-sectional shape of the limiting shaft hole and the lock cylinder is quadrilateral, pentagonal or hexagonal.
[0012] As a preferred embodiment of the hollow handle of the lever-type lock, the limiting shaft hole is recessed inward on one side facing the handle body to form a positioning groove, and the lock cylinder is provided with a positioning protrusion at the position corresponding to the positioning groove. The positioning protrusion is embedded in the positioning groove to position the installation of the hollow handle of the lever-type lock.
[0013] As a preferred embodiment of the hollow handle of the lever-type lock, the limiting shaft hole extends into the drive column housing to form a third abutting protrusion, which is used to increase the abutting area of the limiting shaft hole against the lock cylinder.
[0014] As a preferred embodiment of the hollow handle of the lever-type lock, the bottom of the handle body is provided with a fixing screw hole. The fixing screw passes through the fixing screw hole and extends into the handle front cover for fixing, thereby fixing the handle front cover to the opening of the handle body.
[0015] The beneficial effects of this utility model are:
[0016] This utility model provides a hollow handle for a lever-type lock, comprising: a handle housing and a limiting and fixing member disposed within the handle body. The handle body includes: a handle body and a drive column housing extending from one side of the handle body toward the lock body and communicating with the internal space of the handle body. The limiting and fixing member includes: a fixing part and a limiting part integrally formed with the fixing part. The limiting part is embedded in the handle body, and the fixing part is embedded in the drive column housing through a position where the handle body communicates with the drive column housing. The end of the drive column housing facing the lock body is recessed inward to form a mounting groove. The bottom of the mounting groove is provided with a limiting shaft hole, and one end of the lock cylinder passes through the limiting shaft hole and is fixed to the fixing part. The above solution uses a limiting shaft hole to initially limit the lock cylinder, and then uses a limiting fixing component to further fix the lock cylinder. This method is convenient, quick, and secure, avoiding the need for welding the handle body to the limiting component housing and the subsequent grinding process. This reduces assembly costs and further lowers processing costs. Moreover, by limiting and fixing the lock cylinder at both ends of the drive column housing, the hollow handle of the lever-handle lock ensures that the lock cylinder is subjected to uniform force during operation, thereby extending the service life of both the lock cylinder and the hollow handle of the lever-handle lock and promoting the adoption of hollow handles for lever-handle locks. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and all of them fall within the protection scope of this utility model.
[0018] Figure 1 This is a schematic diagram of an angle structure of the hollow handle of the lever-type lock shown in this utility model;
[0019] Figure 2 yes Figure 1 A schematic diagram of the hollow handle of the lever-type lock from another angle;
[0020] Figure 3 yes Figure 1 A cross-sectional view of the hollow handle of the lever-type lock shown;
[0021] Figure 4 yes Figure 1 An exploded view of the hollow handle of the lever-type lock shown.
[0022] Figure 5 yes Figure 4 A schematic diagram of the handle body of the hollow handle of the lever-type lock shown;
[0023] Figure 6 yes Figure 4 The diagram shows the structure of the limiting and fixing component of the hollow handle of the lever-type lock.
[0024] Figure 7 This is a static displacement force diagram of the hollow handle of the lever-type lock shown in this utility model, which simulates the force analysis of door opening rotation.
[0025] Figure 8 This is a static strain-force diagram of the hollow handle of the lever-type lock shown in this utility model, which simulates the force analysis of door opening and rotation.
[0026] Figure 9 This utility model presents a static force analysis diagram of the stress distribution section of the hollow handle of the lever-type lock shown in this utility model, which simulates the force analysis of the door opening rotation.
[0027] Figure 10 This is a static displacement force diagram of the vertical force analysis of the hollow handle of the lever-type lock shown in this utility model.
[0028] Figure 11 This is a static strain-force diagram of the vertical force analysis of the hollow handle of the lever-type lock shown in this utility model.
[0029] Figure 12 This is a static stress diagram of the hollow handle of the lever-type lock shown in this utility model, which is analyzed in the vertical direction. Detailed Implementation
[0030] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a rotatable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0032] Conventional metal lever-type lock handles are typically made using a single solid casting process, which consumes a significant amount of metal, resulting in higher costs. Furthermore, the solid casting process can lead to uneven material distribution across the handle, affecting its rotation. To address these issues, those skilled in the art have proposed a hollow handle solution for lever-type locks. This solution includes a handle body and a limiting component housing fitted within the handle body. The handle body has a through hole facing the lock cylinder of the lock body, connecting the external space and the internal space of the handle body. The limiting component housing is coaxially mounted within the through hole, with one edge of the limiting component housing welded to the opening of the through hole. Excess weld protrusions are then ground smooth. The lock cylinder extends from the opening of the through hole into the limiting component housing for fixation. However, connecting the handle body and the limiting component housing by welding is complex to manufacture, results in poor product consistency, increases assembly costs, and adds to the processing costs of surface treatment of the welded joint. It may also reduce the strength of the connection between the handle body and the limiting component housing, hindering the widespread adoption of hollow handles.
[0033] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model embodiment provides a hollow handle for a lever-type lock, which includes: a handle housing 10 and a limiting and fixing member 20 disposed in the handle housing 10. The handle housing 10 includes: a handle body 11 and a drive column housing 12 extending from one side of the handle body 11 toward the lock body and communicating with the space inside the handle body 11.
[0034] The limiting and fixing member 20 includes: a fixing part 21 and a limiting part 22 integrally formed with the fixing part 21. The limiting part 22 is embedded in the handle body 11, and the fixing part 21 is embedded in the drive column housing 12 through the position where the handle body 11 communicates with the drive column housing 12.
[0035] The drive column housing 12 is recessed inward at one end facing the lock body to form a mounting groove 121. The bottom of the mounting groove 121 is provided with a limiting shaft hole 1211. One end of the lock cylinder passes through the limiting shaft hole 1211 and is fixed to the fixing part 21.
[0036] In this utility model, the above-mentioned solution is adopted. The lock shaft is initially limited by the limiting shaft hole 1211, and the locking shaft is further fixed by the limiting fixing member 20. The operation is more convenient and quick, and the fixation is more reliable. This avoids the welding of the handle body 11 to the limiting member housing and the grinding process after welding, which reduces the assembly cost and further reduces the processing cost. Moreover, the lock cylinder is limited and fixed at both ends of the drive column housing 12, so that the hollow handle of the lever-type lock is evenly stressed during the driving of the lock cylinder. This further improves the service life of the lock cylinder and the hollow handle of the lever-type lock, which is conducive to the promotion of the hollow handle of the lever-type lock.
[0037] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in order to improve the stability of the fixing part 21, the edge of the fixing part 21 extends upward to form a first abutting protrusion 211. The first abutting protrusion 211 abuts against the inner wall at the junction of the handle body 11 and the drive column housing 12, thereby increasing the contact area between the fixing part 21 and the inner wall at the junction of the handle body 11 and the drive column housing 12, and thus increasing the stability of the fixing part 21 against the inner wall at the junction of the handle body 11 and the drive column housing 12.
[0038] In order to connect the power cord inside the handle body 11 into the lock body, the first abutting protrusions 211 on both sides of the fixing part 21 are hollowed out to form a wire passing groove 2111. The power cord inside the handle body 11 passes through the wire passing groove 2111 and the lock cylinder in sequence and then connects into the lock body.
[0039] To initially position the hollow handle of the lever-handle lock for installation, a fixing groove 212 is provided at the bottom of the fixing part 21. After the lock cylinder abuts against the bottom of the fixing part 21, one end of the lock cylinder is embedded in the fixing groove 212. The positioning groove initially positions the hollow handle of the lever-handle lock. A fixing through hole 2121 is provided at the bottom of the fixing groove 212. The fixing screw passes through the fixing through hole 2121 and extends into one end of the lock cylinder for fixing. Then, the hollow handle of the lever-handle lock is installed and fixed by the fixing screw and the fixing through hole 2121. In this utility model, the lock cylinder can be fixed to the fixing part 21 by screw fixing, snap-fit fixing, or welding fixing. The fixing method can make it convenient and quick to fix the lock cylinder to the fixing part 21. This utility model does not limit this.
[0040] To improve the limiting stability of the limiting part 22, the two side edges of the limiting part 22 extend upward to form a second abutting protrusion 221. The second abutting protrusion 221 abuts against the inner side wall of the handle body 11, thereby increasing the abutting area of the limiting part 22 against the inner side wall of the handle body 11. The stability of the limiting part 22 against the inner side wall of the handle body 11 is improved by the second abutting protrusion 221.
[0041] To further improve the stability of the limiting part 22 embedded in the handle body 11, the second abutting protrusion 221 is welded to the inner side of the side wall of the handle body 11. Welding improves the stability of the limiting part 22 embedded in the handle body 11, thereby greatly improving the torque resistance of the limiting part 22. Not limited to this utility model, the second abutting protrusion 221 can also be fixed to the inner side of the side wall of the handle body 11 by snap-fit. As long as the second abutting protrusion 221 can be fixed to the inner side of the side wall of the handle body 11, this utility model does not limit it in this way.
[0042] In this utility model, the cross-sectional shapes of the limiting shaft hole 1211 and the lock cylinder are preferably quadrilateral, pentagonal, or hexagonal. The cross-sectional shapes of the limiting shaft hole 1211 and the lock cylinder can also be other irregular shapes, such as elliptical or plum blossom-shaped. The shapes of the limiting shaft hole 1211 and the lock cylinder are such that the limiting shaft hole 1211 limits the lock cylinder, so that the lock cylinder can rotate with the hollow handle of the lever-type lock. This utility model does not limit these shapes.
[0043] To further position the hollow handle of the lever-type lock, the limiting shaft hole 1211 is recessed inward on one side facing the handle body 11 to form a positioning groove 1212. The lock cylinder has a positioning protrusion at the position corresponding to the positioning groove 1212. The positioning protrusion is embedded in the positioning groove 1212 to position the hollow handle of the lever-type lock.
[0044] In order to increase the area of the limiting shaft hole 1211 abutting the lock cylinder, the limiting shaft hole 1211 extends into the drive column housing 12 to form a third abutting protrusion 1213. The third abutting protrusion 1213 is used to increase the abutting area of the limiting shaft hole 1211 abutting the lock cylinder, thereby reducing the damage to the lock cylinder caused by the hollow handle of the lever-type lock during rotation.
[0045] In order to fix the front cover of the handle, the bottom of the handle body 11 is provided with a fixing screw hole 111. The fixing screw passes through the fixing screw hole 111 and extends into the front cover of the handle to fix it, thereby fixing the front cover of the handle to the opening of the handle body 11.
[0046] To ensure the stability and accessibility of the aforementioned structural design, the applicant conducted a simulation finite element analysis, mimicking an experiment involving a rotational force of 500 N (50 kg) during the door opening and rotating acceptance analysis. Figure 7 As shown, during static displacement, the handle (the hollow handle of the lock) and the fixed end of the lock cylinder do not deform. The deformation is 1.000e-30. The distal end of the hollow handle of the lock has slight deformation, with a deformation between 2.551e-01 and 5.593e-01. No breakage occurred, indicating that compared with traditional hollow handles, its static displacement is smaller, its quality is better, and its service life is longer than that of traditional hollow handles.
[0047] like Figure 8 As shown, in static strain, the strain is between 0 and 7.578e-04, and no fracture failure occurs, which further proves that it is of better quality and has a longer service life than traditional hollow handles.
[0048] like Figure 9 As shown, in the static stress analysis section, the material yield strength is 2.827e+08, which is close to the actual value. The material was not damaged. In contrast, the traditional hollow handle was damaged under the same material yield condition. This further proves that the material is of better quality and has a longer service life than the traditional hollow handle.
[0049] like Figure 10As shown, the applicant conducted a vertical acceptance analysis. Under a vertical force of 1600N (160kg) (destructive test), in the static displacement test, the handle, which is the hollow handle of the lock, did not shift at the fixed end of the lock cylinder. The displacement at the far end was 3.678e+00, and no breakage occurred. It did not affect the door opening function. Compared with traditional hollow handles, under the above conditions, the handle will shift at the fixed end and break at the far end. This shows that the quality of this utility model is better than that of traditional hollow handles, and its service life is longer than that of traditional hollow handles.
[0050] like Figure 11 As shown, in static strain, the strain is between 0.000e+00 and 4.560e-03, and no destructive effects such as fracture occur, further proving that it has better quality and a longer service life than traditional hollow handles.
[0051] like Figure 12 As shown, in static stress, the material yield strength is 2.827e+08. In reality, this data is close to the actual value, and the material is not damaged. However, for traditional hollow handles, the material is already damaged under the above-mentioned material yielding condition. This further proves that it is of better quality than traditional hollow handles, and its service life is longer than that of traditional hollow handles.
[0052] The present invention has been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and alterations to these embodiments can be made without departing from the principles and spirit of the present invention, and these changes still fall within the protection scope of the present invention.
Claims
1. A hollow handle for a lever-type lock, characterized in that, include: The handle housing and the limiting and fixing member disposed in the handle housing, the handle housing including: a handle body and a drive column housing extending from one side of the handle body toward the lock body and communicating with the internal space of the handle body; The limiting and fixing component includes: a fixing part and a limiting part integrally formed with the fixing part. The limiting part is embedded in the handle body, and the fixing part is embedded in the drive column housing through a position where the handle body communicates with the drive column housing. The drive column housing is recessed inward at one end facing the lock body to form a mounting groove. The bottom of the mounting groove is provided with a limiting shaft hole. One end of the lock cylinder passes through the limiting shaft hole and is fixed to the fixing part.
2. The hollow handle of the lever-type lock as described in claim 1, characterized in that, The edge of the fixing part extends upward to form a first abutting protrusion. The first abutting protrusion abuts against the inner wall at the junction of the handle body and the drive column housing, thereby increasing the abutting area of the fixing part against the inner wall at the junction of the handle body and the drive column housing.
3. The hollow handle of the lever-type lock as described in claim 2, characterized in that, The first abutting protrusions on both sides of the fixing part are hollowed out to form a wire passing groove. The power cord inside the handle body passes through the wire passing groove and the lock cylinder in sequence and then connects to the lock body.
4. The hollow handle of the lever-type lock as described in claim 1, characterized in that, The bottom of the fixing part is provided with a fixing groove. After the lock cylinder abuts against the bottom of the fixing part, one end of the lock cylinder is embedded in the fixing groove. The bottom of the fixing groove is provided with a fixing through hole, and the fixing screw passes through the fixing through hole and extends into one end of the lock cylinder for fixing.
5. The hollow handle of the lever-type lock as described in claim 1, characterized in that, The two sides of the limiting part extend upward to form a second abutting protrusion. The second abutting protrusion abuts against the inner side wall of the handle body, thereby increasing the abutting area of the limiting part against the inner side wall of the handle body.
6. The hollow handle of the lever-type lock as described in claim 5, characterized in that, The second abutting protrusion is welded to the inner side wall of the handle body.
7. The hollow handle of the lever-type lock as described in claim 1, characterized in that, The cross-sectional shapes of the limiting shaft hole and the lock cylinder are all quadrilateral, pentagonal, or hexagonal.
8. The hollow handle of the lever-type lock as described in claim 1, characterized in that, The limiting shaft hole is recessed inward on one side facing the handle body to form a positioning groove. The lock cylinder has a positioning protrusion at the position corresponding to the positioning groove. The positioning protrusion is embedded in the positioning groove to position the hollow handle of the lever-type lock for installation.
9. The hollow handle of the lever-type lock as described in claim 8, characterized in that, The limiting shaft hole extends into the drive column housing to form a third abutting protrusion, which is used to increase the abutting area of the limiting shaft hole against the lock cylinder.
10. The hollow handle of the lever-type lock as described in claim 1, characterized in that, The bottom of the handle body is provided with a fixing screw hole. The fixing screw passes through the fixing screw hole and extends into the handle front cover for fixing, thereby fixing the handle front cover to the opening of the handle body.