Anti-drop type transmission handle

Abstract

The utility model discloses a kind of anti-disengagement transmission handles, including base and handle handle installed on base, the base inside has installation cavity, gear is installed on the handle handle in installation cavity, rack is equipped in installation cavity and engaged with gear, the rack has the shift fork that protrudes installation cavity, the side surface of gear towards handle handle has disc, the inner side of rack also has the convex edge that can hook disc in transmission process. Thus, when convex edge hooks disc, the engagement between gear and rack in transmission process can avoid misregistration or skip tooth, keep in the preset plane during the movement of shift fork, ensure handle operation smooth, transmission function is stable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of doors and windows, specifically to an anti-detachment transmission handle. Background Technology

[0002] The transmission handle is a core operating component in door and window opening and locking systems. Operating the handle drives the transmission component to rotate, which in turn drives the actuator through a meshing structure. This causes the actuator to translate along a preset direction, ultimately achieving the extension and retraction of the door / window locking point, completing the locking or opening function. However, in actual use, multiple factors, including insufficient manufacturing precision leading to larger assembly gaps between components, and positional deviations during installation, combined with prolonged operation or excessive force applied to the handle, can cause the actuator to tilt outwards during translation. Because the transmission and actuator rely solely on meshing to transmit power, they cannot effectively constrain the actuator's deviation. Therefore, it is highly susceptible to disengagement or misalignment between the transmission and actuator, resulting in tooth skipping. Tooth skipping not only causes handle operation to become stuck and transmission to fail, preventing normal locking and opening of doors and windows, but also accelerates the wear of the rack and pinions, shortening the handle's lifespan. Utility Model Content

[0003] Based on this, and in response to the aforementioned technical problems, this utility model provides an anti-detachment transmission handle.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] An anti-detachment transmission handle includes a base and a handle mounted on the base. The base has an internal mounting cavity. A gear is mounted on the handle and located within the mounting cavity. A rack meshes with the gear within the mounting cavity. The rack has a fork extending out of the mounting cavity. A disc is located on the side of the gear facing the handle. The inner side of the rack also has a protruding ridge that can hook onto the disc during transmission.

[0006] By adopting the above technical solution, when the convex edge hooks onto the disc, it can prevent misalignment or skipping of teeth in the meshing between the gear and rack during the transmission process, so that the shift fork always stays within the preset plane during the movement process, ensuring smooth operation of the handle and stable and reliable transmission function.

[0007] In a specific embodiment of this utility model: the protruding ridge has a notch. During assembly, the notch on the protruding ridge is aligned with a tooth on the gear that might interfere with it. This allows the protruding ridge to smoothly cross the gear teeth with the help of the notch, preventing collisions and facilitating assembly or disassembly.

[0008] In a specific embodiment of this utility model: the circumferential edge of the disk is flush with the tip of the gear teeth.

[0009] In a specific embodiment of this utility model, a bottom cover is also included that is fastened to the opening of the receiving cavity, and an elongated clearance groove is provided on the bottom cover corresponding to the position of the shift fork.

[0010] In a specific embodiment of this utility model: the bottom cover is made of plastic.

[0011] In summary, the protruding ridges in this invention hook the disc, preventing misalignment or skipping of gears and racks during transmission. This ensures that the shift fork remains within the preset plane during movement, guaranteeing smooth operation of the handle and stable and reliable transmission function. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] Figure 1 This is a structural schematic diagram of an anti-detachment transmission handle according to this utility model;

[0014] Figure 2 This is a schematic diagram of the anti-detachment structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the bottom cover of this utility model;

[0016] Figure 4 yes Figure 3 Sectional view at point AA. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1 and Figure 4 As shown, this utility model is an anti-detachment transmission handle, including a base 10, a handle 20, a transmission component 30, and an actuator 40. The base 10 has a mounting cavity 11 inside. One side of the mounting cavity 11 is open 12, and the middle of the other side has a circular hole 13 communicating with the outside. The handle 20 is installed in the circular hole 13, and its interior has an insertion cavity 21 communicating with the circular hole 13. The transmission component 30 and the actuator 40 are located within the mounting cavity 11.

[0019] like Figure 2 and Figure 4As shown, in this embodiment, the transmission component 30 includes a circular gear 31 and a rod 32 connected to the gear 31. During assembly, the transmission component 30 is placed into the mounting cavity 11, and the rod 32 extends from the circular hole 13 and is inserted into the insertion cavity 21 of the handle 20, and is fixed by bolts 22.

[0020] like Figure 1 and Figure 2 As shown, in this embodiment, the actuator 40 includes a first vertical plate 41 located between the side wall of the mounting cavity 11 and the gear 31, a second vertical plate 42 vertically connected to the outer edge of the first vertical plate 41 and located outside the gear 31, and a fork 43 connected to the outer side of the second vertical plate 42 and extending outward from the mounting cavity 11. The first vertical plate 41 also has a rack 44 that meshes with the gear 31. Thus, by operating the handle 20 to drive the transmission member 30 to rotate, the gear 31 of the transmission member 30 meshes with the rack 44 of the actuator 40, and this meshing transmission converts the rotational motion of the transmission member 30 into the vertical translational motion of the actuator 40.

[0021] like Figure 2 As shown, in this embodiment, the inner edge of the first vertical plate 41 has a raised ridge 51 facing the gear 31. The gear 31 also has a disc 52 on the side near the handle that can be hooked by the raised ridge 51 during transmission. Thus, when the raised ridge hooks the disc, the actuator remains within a preset plane during its up-and-down movement along with the transmission component, thereby preventing misalignment or skipping of teeth in the meshing between the transmission component and the actuator, ensuring smooth handle operation and stable and reliable transmission function.

[0022] In this embodiment, the circumferential edge of the disk 52 is flush with the tooth tip of the gear 31.

[0023] In this embodiment, the protruding ridge 51 has a notch 53. Thus, when it is necessary to assemble or disassemble the actuator, simply drive the actuator up and down so that the notch on the protruding ridge aligns with the teeth on the gear that may cause interference. In this way, the protruding ridge can smoothly cross the teeth of the gear with the help of the notch, avoiding collision between the two. After the protruding ridge completely avoids the teeth, the actuator can be easily embedded into the mounting cavity of the base and the protruding ridge can be engaged with the disc, or the actuator can be directly pulled out from the mounting cavity to complete the assembly or disassembly operation.

[0024] like Figure 3 As shown, this embodiment also includes a bottom cover 14 that snaps onto the opening 12 of the receiving cavity 11. The bottom cover 14 is made of plastic. Here, the bottom cover 14 can seal the receiving cavity 11 and prevent its internal components from falling out of the opening 12. A long strip-shaped clearance groove 15 is provided on the bottom cover 14 at the position corresponding to the shift fork 43.

[0025] In summary, the protruding ridges in this invention can prevent misalignment or skipping of gears and racks during transmission by hooking the disc, ensuring that the shift fork remains within the preset plane during movement, thus guaranteeing smooth operation of the handle and stable and reliable transmission function.

[0026] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A non-detachable transmission handle, comprising a base and a handle mounted on the base, wherein the base has a mounting cavity, a gear is mounted on the handle within the mounting cavity, a rack meshing with the gear is provided within the mounting cavity, and the rack has a fork extending out of the mounting cavity, characterized in that, The gear has a disc on one side facing the handle, and the inner side of the rack also has a convex ridge that can hook onto the disc during transmission.

2. The anti-detachment transmission handle according to claim 1, characterized in that, The circumferential edge of the disk is flush with the tip of the gear teeth.

3. The anti-detachment transmission handle according to claim 1, characterized in that, The protruding ridge has a notch.

4. The anti-detachment transmission handle according to claim 1, characterized in that, It also includes a bottom cover that snaps into the opening of the receiving cavity, and the bottom cover has a long strip-shaped clearance groove corresponding to the position of the shift fork.

5. The anti-detachment transmission handle according to claim 4, characterized in that, The bottom cover is made of plastic.

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