Locking mechanism of rotating handle

Abstract

The utility model relates to a locking mechanism of a rotary handle, and belongs to the field of structural design of rotary handles, the locking mechanism comprises a barrel, and a guide hole extending in the axial direction is formed in the outer wall of the barrel; the locking piece is axially connected into the cylinder body in a sliding manner, and a clamping block extending out of the guide hole is arranged on the locking piece; the handle is rotationally connected to the cylinder body, a first clamping groove and a second clamping groove which are used for being matched with the clamping block are formed in the handle, and the first clamping groove and the second clamping groove are formed in the circumferential direction of the cylinder body at intervals. When the clamping block on the locking piece is clamped into the first clamping groove or the second clamping groove, the clamping block is limited by the guide hole in the barrel body to further limit rotation of the locking piece, the handle is limited by the clamping block to further limit rotation of the handle around the barrel body, and therefore position locking of the handle can be achieved, the handle can achieve switching of handle stations by switching the clamping groove matched with the clamping block, and the working efficiency of the handle is improved. The structure is simple and reasonable, the operation is flexible and convenient, and the use is safe and reliable.

Description

Technical Field

[0001] This application relates to the field of rotary handle structure design, and in particular to a locking mechanism for a rotary handle. Background Technology

[0002] There are two main types of locking mechanisms for existing rotary handles: push-in and rotary. The push-in locking mechanism results in an excessively large handle height, making the overall appearance less aesthetically pleasing and failing to meet the requirements for handle appearance.

[0003] While existing rotary locking mechanisms meet the height requirements, they are inconvenient to install and remove, and are complex to assemble and disassemble. Examples include a handle folding mechanism for a handheld steam product disclosed in CN211036490U and a foldable steam brush disclosed in CN213013601U.

[0004] Therefore, it is necessary to study and improve the existing locking mechanism of the rotary handle, and to provide a locking mechanism for the rotary handle in order to achieve a more practical purpose. Summary of the Invention

[0005] In view of the shortcomings or deficiencies mentioned above in the background technology, the present application provides a locking mechanism for a rotary handle, which has the advantages of simple and reasonable structure, flexible and convenient operation, and safe and reliable use.

[0006] This application provides a locking mechanism for a rotary handle, including:

[0007] The cylinder body has a guide hole extending axially on its outer wall.

[0008] A locking element is axially slidably connected to the cylinder body, and the locking element is provided with a locking block that extends out of the guide hole;

[0009] A handle is rotatably connected to the cylinder body. The handle is provided with a first slot and a second slot for matching the locking block. The first slot and the second slot are spaced apart around the circumference of the cylinder body.

[0010] In some embodiments, the cylinder is provided with a compression spring for pushing the locking member to keep the locking block in a first or second slot.

[0011] In some embodiments, one end of the cylinder is provided with an inner flange for axially limiting the locking member, and the other end is provided with an end cap for supporting the compression spring.

[0012] In some embodiments, the locking member has a button extending out of the cylinder at the end furthest from the compression spring.

[0013] In some embodiments, the system further includes a main housing, on which the cylinder is fixedly disposed, and the main housing is provided with a U-shaped groove for axially limiting the handle.

[0014] In some embodiments, the two ends of the cylinder are respectively provided with an outer flange and an end cap for abutting against the main body shell, and the end cap is threadedly connected to the cylinder to tighten and fix the outer flange to the main body shell.

[0015] In some embodiments, the main body shell is provided with a positioning groove, and the outer wall of the cylinder is provided with a positioning block located in the positioning groove and used to prevent the cylinder from rotating relative to the main body shell.

[0016] In some embodiments, the handle is provided with a limiting groove extending circumferentially along the cylinder, and the outer wall of the cylinder is provided with a protrusion extending into the limiting groove and used to limit the rotation range of the handle.

[0017] In some embodiments, the locking block is a wedge-shaped block, and the depth of both the first and second locking slots is greater than the length of the locking block in the axial direction of the cylinder.

[0018] In some embodiments, the handle includes a handle frame rotatably connected to the cylinder and a handle housing fixed to the handle frame, wherein the first slot and the second slot are located on the handle frame.

[0019] The beneficial effects of the technical solution provided in this application include:

[0020] This application provides a locking mechanism for a rotary handle. The cylinder has an axially extending guide hole on its outer wall. A locking member is axially slidably connected to the cylinder and has a locking block extending out of the guide hole. A handle is rotatably connected to the cylinder and has a first and a second slot for matching the locking block. The first and second slots are spaced apart around the circumference of the cylinder.

[0021] Therefore, when the locking block on the locking element engages in the first or second slot, the locking block is constrained by the guide hole on the cylinder, thus restricting the rotation of the locking element. The handle is also constrained by the locking block, thus restricting the rotation of the handle around the cylinder, thereby achieving position locking of the handle. Since the locking block can be axially disengaged from the slot by moving it, the handle can switch the slot that mates with the locking block by rotating, thereby switching the handle's working position. In other words, this application achieves handle rotation positioning using only the cylinder, the locking element, and the handle, and has the advantages of simple and reasonable structure, flexible and convenient operation, and safe and reliable use. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the exploded structure of an embodiment of this application;

[0024] Figure 2 This is a cross-sectional view of the cylindrical body according to an embodiment of this application;

[0025] Figure 3 This is a schematic diagram illustrating the implementation of the handle retraction in an embodiment of this application;

[0026] Figure 4 This is a cross-sectional view of the handle according to an embodiment of this application;

[0027] Figure 5 This is a schematic diagram of the handle frame structure according to an embodiment of this application;

[0028] Figure 6 This is a schematic diagram of a card block being inserted into the first card slot according to an embodiment of this application;

[0029] Figure 7 This is a schematic diagram illustrating the unfolding of the handle according to an embodiment of this application.

[0030] The attached diagram lists the components represented by each number as follows:

[0031] 1. Cylinder body; 11. Guide hole; 12. Inner flange; 13. Outer flange; 14. Positioning block; 15. Protrusion; 2. Locking element; 21. Locking block; 3. Handle; 31. Handle frame; 311. First slot; 312. Second slot; 313. Limiting groove; 32. Handle housing; 4. Compression spring; 5. End cap; 6. Button; 7. Main body shell. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] In view of the shortcomings or deficiencies mentioned above in the background technology, the present application provides a locking mechanism for a rotary handle, which has the advantages of simple and reasonable structure, flexible and convenient operation, and safe and reliable use.

[0034] See Figures 1 to 7 As shown, this application embodiment provides a locking mechanism for a rotary handle, including:

[0035] The cylinder 1 has a guide hole 11 extending axially on its outer wall;

[0036] Locking component 2 is axially slidably connected inside the cylinder 1, and a locking block 21 extending out of the guide hole 11 is provided on the locking component 2;

[0037] Handle 3 is rotatably connected to cylinder 1. Handle 3 is provided with a first slot 311 and a second slot 312 for matching the locking block 21. The first slot 311 and the second slot 312 are spaced apart around the cylinder 1.

[0038] The locking mechanism of the rotary handle in this embodiment includes a cylinder 1, a locking member 2, and a handle 3. The handle 3 is sleeved on the cylinder 1 and can rotate relative to the cylinder 1. The locking member 2 is installed inside the cylinder 1. The locking block 21 on the locking member 2 extends out of the guide hole 11 on the cylinder 1. The locking block 21 is restricted by the axially extending guide hole 11, so that the locking member 2 can drive the locking block 21 to slide along the axial direction of the cylinder 1 to change its position.

[0039] The handle 3 is provided with a first slot 311 and a second slot 312 into which the locking block 21 can be axially engaged. The first slot 311 and the second slot 312 are spaced apart around the cylinder 1. When the locking member 2 drives the locking block 21 to be axially engaged in the first slot 311, the handle 3 is in a first position relative to the cylinder 1. After the locking member 2 drives the locking block 21 to be axially disengaged from the first slot 311, the handle 3 can be driven to rotate relative to the cylinder 1 at a suitable angle. Then, the locking member 2 drives the locking block 21 to be axially engaged in the second slot 312, and the handle 3 is in a second position relative to the cylinder 1.

[0040] When the handle 3 needs to remain in other positions relative to the cylinder 1, additional slots that can cooperate with the locking block 21 can be added to the handle 3 to enable the handle 3 to work effectively at multiple angles and positions. This application can achieve the rotational positioning of the handle 3 through the cylinder 1, the locking member 2, and the handle 3, which has the advantages of simple and reasonable structure, flexible and convenient operation, and safe and reliable use.

[0041] For example, during use, the cylinder 1 is fixedly installed on the outer shell of the device. The device can be various handheld electrical tools, such as hair dryers, steam brushes, etc. A bearing can be installed between the cylinder 1 and the handle 3 to restrict the handle 3 from moving axially along the cylinder 1. In actual use, the first position corresponding to the first slot 311 where the locking block 21 is engaged can be used as the folded position of the handle 3, and the second position corresponding to the second slot 312 where the locking block 21 is engaged can be used as the unfolded position of the handle 3.

[0042] In some alternative embodiments: see Figures 1 to 7 As shown, this application embodiment provides a locking mechanism for a rotary handle. The cylinder 1 of the locking mechanism is provided with a compression spring 4 for pushing the locking member 2 so that the locking block 21 on the locking member 2 is held in the first slot 311 or the second slot 312.

[0043] In this embodiment, a compression spring 4 is provided inside the cylinder 1. The elastic force of the compression spring 4 can keep the locking block 21 in the first slot 311 or the second slot 312, giving the locking mechanism strong self-locking and stability. In use, by pressing the locking member 2, the compression spring 4 can be squeezed, thereby causing the locking block 21 to disengage from the slot. After the handle 3 is rotated to the correct position, the locking member 2 is released to reset the locking block 21. This allows for easy switching of the locking block 21 between the first slot 311 and the second slot 312, while ensuring a stable locking of the handle 3.

[0044] In some alternative embodiments: see Figures 1 to 7 As shown, this application embodiment provides a locking mechanism for a rotary handle. One end of the cylinder 1 of the locking mechanism is provided with an inner flange 12 for axially limiting the locking member 2, and the other end is provided with an end cap 5 for supporting the compression spring 4.

[0045] In this embodiment, one end of the cylinder 1 is integrally formed with an inner flange 12 protruding inward. During installation, the inner flange 12 can prevent the locking member 2 from disengaging from the cylinder 1. The other end of the cylinder 1 is equipped with an end cap 5, which can support and limit the compression spring 4.

[0046] For example, in this embodiment, the locking member 2 is a cylindrical structure with one end closed. After the locking member 2 is slidably inserted into the cylinder 1, a compression spring 4 is installed. The compression spring 4 extends into and abuts against the locking member 2. Finally, the end cap 5 is threadedly connected. The locking block 21 integrally formed on the locking member 2 is restricted by the guide hole 11 on the cylinder 1, so that the locking member 2 cannot rotate relative to the cylinder 1.

[0047] In some alternative embodiments: see Figures 1 to 7 As shown, this application embodiment provides a locking mechanism for a rotary handle, wherein the locking member 2 of the rotary handle locking mechanism is connected to a button 6 extending out of the cylinder 1 at the end away from the compression spring 4.

[0048] A button 6 is fixedly installed on the locking member 2 in this embodiment of the application, so that pressing the button 6 can move the locking member 2. For example, the button 6 in this embodiment has a mounting hole, and a screw is installed in the mounting hole to fix the locking member 2. A hidden screw silicone plug is also inserted into the mounting hole, which improves the aesthetics and facilitates the pressing operation.

[0049] In some alternative embodiments: see Figures 1 to 7 As shown, this application embodiment provides a locking mechanism for a rotary handle. The locking mechanism for the rotary handle also includes a main body shell 7, a cylinder 1 fixedly disposed on the main body shell 7, and a U-shaped groove for axially limiting the handle 3 is provided on the main body shell 7.

[0050] In this embodiment, the main body shell 7 is provided with a U-shaped groove. One end of the handle 3 is located in the U-shaped groove, and the cylinder 1 passes through the handle 3 and the main body shell 7 and is fixedly installed on the main body shell 7, thereby realizing the rotatable connection between the handle 3 and the main body shell 7. The U-shaped groove matches the end of the handle 3, thereby restricting the axial movement of the handle 3 and ensuring the stability of the handle 3 during use. For example, the main body shell 7 can be the shell of various handheld electrical tools, such as the shell of a hair dryer, a steam brush, etc.

[0051] In some alternative embodiments: see Figures 1 to 7 As shown, this application embodiment provides a locking mechanism for a rotary handle. The cylindrical body 1 of the locking mechanism is provided with an outer flange 13 and an end cap 5 at both ends for abutting against the outer shell 7. The end cap 5 is threadedly connected to the cylindrical body 1 to tighten and fix the outer flange 13 to the outer shell 7.

[0052] In this embodiment, the cylinder 1 has an outer flange 13 integrally formed at one end, and the main shell 7 is provided with an annular groove that matches the outer flange 13. After the cylinder 1 is inserted into the main shell 7, the cylinder 1 is connected to the end cap 5 by thread. The end cap 5 abuts against the main shell 7, which can tighten the outer flange 13 on the cylinder 1 in the annular groove, thereby realizing the fixed installation of the cylinder 1, which has the advantages of convenient installation and disassembly.

[0053] In some alternative embodiments: see Figures 1 to 7 As shown, this application embodiment provides a locking mechanism for a rotary handle. The main body shell 7 of the locking mechanism is provided with a positioning groove, and the outer wall of the cylinder 1 is provided with a positioning block 14 located in the positioning groove and used to prevent the cylinder 1 from rotating relative to the main body shell 7.

[0054] The main body shell 7 of this application embodiment is provided with a positioning groove (not shown in the figure), and a positioning block 14 is integrally formed on the outer wall of the cylinder 1. After the cylinder 1 is inserted into the positioning block 14, the positioning block 14 can be locked into the positioning groove, thereby restricting the circumferential rotation of the cylinder 1 and ensuring the reliability of the cylinder 1 after installation.

[0055] In some alternative embodiments: see Figures 1 to 7 As shown, this application embodiment provides a locking mechanism for a rotary handle. The handle 3 of the locking mechanism is provided with a limiting groove 313 extending circumferentially along the cylinder 1, and the outer wall of the cylinder 1 is provided with a protrusion 15 extending into the limiting groove 313 and used to limit the rotation range of the handle 3.

[0056] In this embodiment, the handle 3 is provided with a limiting groove 313. The limiting groove 313 extends circumferentially and slides in cooperation with a protrusion 15 integrally formed on the outer wall of the cylinder 1. When the handle 3 rotates around the cylinder 1, the limiting groove 313 is restricted by the protrusion 15, thereby limiting the rotation range of the handle 3. For example, in this embodiment, the angle corresponding to the rotation range of the handle 3 restricted by the protrusion 15 is equal to the angle formed by the first slot 311 and the second slot 312 and the axis of the cylinder 1.

[0057] In some alternative embodiments: see Figures 1 to 7 As shown, this application embodiment provides a locking mechanism for a rotary handle. The locking block 21 of the rotary handle locking mechanism is a wedge-shaped block, and the groove depth of the first groove 311 and the second groove 312 is greater than the length of the locking block 21 in the axial direction of the cylinder 1.

[0058] In this embodiment, the locking block 21 is a trapezoidal wedge. The trapezoidal wedge has a first inclined surface and a second inclined surface, which are spaced apart circumferentially around the locking member 2. When the trapezoidal wedge is engaged in the slot on the handle 3, the first and second inclined surfaces abut against the sidewalls of the slot, thereby ensuring good locking performance. For example, in this embodiment, the depth of the first slot 311 and the second slot 312 is greater than the length of the trapezoidal wedge in the axial direction of the cylinder 1, which ensures that the inclined surfaces still have good self-locking performance after wear, and can ensure that the trapezoidal wedge is locked and eliminates gaps.

[0059] In some alternative embodiments: see Figures 1 to 7 As shown, this application embodiment provides a locking mechanism for a rotary handle. The handle 3 of the locking mechanism includes a handle frame 31 rotatably connected to the cylinder 1 and a handle housing 32 fixed to the handle frame 31. A first slot 311 and a second slot 312 are located on the handle frame 31.

[0060] The handle 3 in this embodiment of the application consists of a handle frame 31 and a handle housing 32. The handle frame 31 is integrally injection molded. The first slot 311 and the second slot 312 are provided on the handle frame 31. Both sides of the handle frame 31 are connected to the handle housing 32 by fasteners. The handle housing 32 is provided with anti-slip grooves.

[0061] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable 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; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0062] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0063] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A locking mechanism for a rotary handle, characterized in that, include: A cylindrical body (1) is provided with a guide hole (11) extending along the axial direction on the outer wall of the cylindrical body (1); Locking member (2), the locking member (2) is axially slidably connected to the cylinder (1), and the locking member (2) is provided with a locking block (21) extending out of the guide hole (11); The handle (3) is rotatably connected to the cylinder (1). The handle (3) is provided with a first slot (311) and a second slot (312) for matching the card block (21). The first slot (311) and the second slot (312) are spaced apart around the cylinder (1).

2. The locking mechanism of the rotary handle as described in claim 1, characterized in that: The cylinder (1) is provided with a compression spring (4) for pushing the locking member (2) so that the locking block (21) on the locking member (2) is kept in the first slot (311) or the second slot (312).

3. The locking mechanism of the rotary handle as described in claim 2, characterized in that: One end of the cylinder (1) is provided with an inner flange (12) for axially limiting the locking member (2), and the other end is provided with an end cap (5) for supporting the compression spring (4).

4. The locking mechanism of the rotary handle as described in claim 2, characterized in that: The locking member (2) is connected to a button (6) extending out of the cylinder (1) at the end away from the compression spring (4).

5. The locking mechanism of the rotary handle as described in claim 1, characterized in that: It also includes a main shell (7), the cylinder (1) is fixedly mounted on the main shell (7), and the main shell (7) is provided with a U-shaped groove for axially limiting the handle (3).

6. The locking mechanism of the rotary handle as described in claim 5, characterized in that: The cylindrical body (1) is provided with an outer flange (13) and an end cap (5) at both ends for abutting against the main shell (7). The end cap (5) is threadedly connected to the cylindrical body (1) to tighten and fix the outer flange (13) to the main shell (7).

7. The locking mechanism of the rotary handle as described in claim 5, characterized in that: The main body shell (7) is provided with a positioning groove, and the outer wall of the cylinder (1) is provided with a positioning block (14) located in the positioning groove and used to prevent the cylinder (1) from rotating relative to the main body shell (7).

8. The locking mechanism of the rotary handle as described in claim 1, characterized in that: The handle (3) is provided with a limiting groove (313) extending circumferentially along the cylinder (1), and the outer wall of the cylinder (1) is provided with a protrusion (15) extending into the limiting groove (313) and used to limit the rotation range of the handle (3).

9. The locking mechanism of the rotary handle as described in claim 1, characterized in that: The card block (21) is a wedge-shaped block, and the depth of the first card groove (311) and the second card groove (312) is greater than the length of the card block (21) in the axial direction of the cylinder (1).

10. The locking mechanism of the rotary handle as described in claim 1, characterized in that: The handle (3) includes a handle frame (31) rotatably connected to the cylinder (1) and a handle housing (32) fixed to the handle frame (31), with the first slot (311) and the second slot (312) located on the handle frame (31).

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