A double-tooth eccentric handle for doors and windows

Abstract

The double-tooth eccentric handle for doors and windows disclosed in the present invention comprises a handle, a shell, an inner base, a cover plate and a transmission mechanism, wherein the transmission mechanism comprises a large gear fixing seat, a small gear shaft, a double-tooth rack and a gear shaft fixing seat, the handle is coaxially fixedly connected with the large gear fixing seat, a large gear is integrally arranged at the rear side of the large gear fixing seat, the double-tooth rack comprises a first rack and a second rack, the first rack meshes with the large gear, the front end of the small gear shaft is installed on the gear shaft fixing seat, and the rear end passes through the cover plate, the rear end of the small gear shaft is used to connect the transmission gear in the lock box, the outer ring of the small gear shaft is integrally arranged with a small gear, the small gear meshes with the second rack, and the center line of the small gear is eccentrically arranged with the center line of the large gear. The advantages are: under the premise of ensuring the standard stroke of the handle, the profile requirements for the door and window sash can be reduced, the application range of the handle can be expanded, and it can be applied to door and window types such as narrow-frame door and window types and outward-opening door and window types, bringing more space for the design of the matching lock box.

Description

Technical Field

[0001] The invention relates to a door and window hardware accessory, in particular to a double-tooth eccentric handle for doors and windows. Background Art

[0002] As a common door and window hardware accessory, handles are mostly driven by centered turntable square steel to ensure transmission stability. Although the centered turntable square steel transmission method can meet the standard travel requirements of the handle, due to the limitation of the installation center of the square steel, the door and window leaf profile needs to be slotted to install the lock box, which brings certain restrictions to the design of many outward-opening doors and windows, especially narrow-frame doors and windows. Therefore, the existing centered turntable square steel transmission method of the handle has high requirements for the profile of the door and window leaf, limiting its application in narrow-frame doors and windows and outward-opening doors and windows. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a double-tooth eccentric handle for doors and windows in view of the shortcomings of the prior art. The handle has a compact, stable and reliable structure, and the opening and locking operations are natural and smooth. Under the premise of ensuring the standard stroke of the handle, the requirements for the profiles of door and window sashes can be reduced, and the application range of the handle can be expanded. The handle can be applied to door and window types such as narrow-frame door and window types and outward-opening door and window types, thereby providing more space for the design of the matching lock box.

[0004] The technical solution adopted by the present invention to solve the above technical problems is: a double-tooth eccentric handle for doors and windows, comprising a handle, an outer shell, an inner base, a cover plate and a transmission mechanism installed on the inner side of the inner base, the outer shell is arranged on the front side of the inner base, the cover plate is covered on the rear side of the inner base, the inner base and the cover plate are respectively provided with a plurality of screw holes, the transmission mechanism comprises a large gear fixing seat, a small gear shaft, a double-tooth rack and a gear shaft fixing seat, the handle is coaxially fixedly connected with the large gear fixing seat by screws, the large gear fixing seat is arranged in the middle part of the inner base, a large gear is integrally arranged on the rear side of the large gear fixing seat, and the double-tooth rack can move linearly The gear shaft fixing seat is arranged on one side of the large gear fixing seat, the double-tooth rack is arranged along the length direction of the inner base, the double-tooth rack includes a first rack and a second rack which are arranged integrally in the front and rear, the first rack is meshed with the large gear, the gear shaft fixing seat is arranged on the rear side of the large gear fixing seat, the front end of the pinion shaft is rotatably mounted on the gear shaft fixing seat, the rear end of the pinion shaft passes through the cover plate, the rear end of the pinion shaft is used to connect the transmission gear in the lock box, the outer ring of the pinion shaft is integrally provided with a pinion, the pinion is meshed with the second rack, and the center line of the pinion is eccentrically arranged with the center line of the large gear.

[0005] The double-tooth eccentric handle of the present invention is fixedly installed on the door and window leaf by screws, and is used in conjunction with a lock box installed on the door and window leaf. In the double-tooth eccentric handle of the present invention, the transmission mechanism composed of the large gear fixing seat, the small gear shaft, the double-tooth rack and the gear shaft fixing seat is an eccentric transmission mechanism, and the matching lock box does not need to be grooved during installation. Under the premise of ensuring the standard stroke of the handle, the profile requirements for the door and window leaf can be reduced, and the application range of the handle is expanded, and it is applied to door and window types such as narrow-frame door and window types and outward-opening door and window types.

[0006] Through the stroke design, during use, the handle is rotated 90°, which drives the large gear fixing seat to rotate 90°, and then drives the double-tooth rack to move a certain stroke in a straight line. At the same time, the double-tooth rack drives the small gear shaft to rotate 180°, thereby driving the transmission gear in the lock box, so that the lock box can achieve the same transmission stroke as the double-tooth rack, complete the corresponding opening and locking operations, achieve the required transmission effect, and make the best choice for the installation position of the handle on the window sash. In addition, the double-tooth eccentric handle of the present invention is compact, stable and reliable, and its opening and locking operations are naturally smooth, which brings more space for the design of the matching lock box.

[0007] Preferably, a first circular groove concave forward is provided in the inner base, and the large gear fixing seat is embedded in the first circular groove. Furthermore, a second circular groove concave forward is provided in the middle of the rear side of the large gear fixing seat, and a positioning ring adapted to the second circular groove is integrally provided on the front side of the gear shaft fixing seat, and the positioning ring is embedded in the second circular groove. The first circular groove and the second circular groove respectively position the large gear fixing seat and the gear shaft fixing seat, thereby ensuring the compactness and reliability of the structure inside the inner base.

[0008] Furthermore, four limiting plates are integrally arranged in the inner base, the rear side of the gear shaft fixing seat is generally drum-shaped, the four limiting plates are arranged at the four corners of the rear side of the gear shaft fixing seat, and the gear shaft fixing seat is limited to the inner side of the four limiting plates.

[0009] Preferably, a first arc-shaped notch and a second arc-shaped notch are provided on a side of the gear shaft fixing seat close to the double-tooth rack, the first arc-shaped notch is located in front of the second arc-shaped notch, the front end of the pinion shaft is embedded in the first arc-shaped notch, and the pinion is embedded in the second arc-shaped notch. The design of the first arc-shaped notch and the second arc-shaped notch, while limiting the pinion shaft, is conducive to further improving the compactness of the inner structure of the inner base.

[0010] Preferably, a baffle is integrally provided on the double-tooth rack, the baffle is provided along the length direction of the inner base, the baffle is located between the first rack and the second rack, the large gear and the small gear are in contact with the front side and the rear side of the baffle respectively. The baffle separates the first rack from the second rack front and back, which can avoid interference between the large gear and the small gear, and ensure the transmission effect.

[0011] Preferably, an elongated groove is provided on the inner side of the inner base, the elongated groove is arranged along the length direction of the inner base, and the double-tooth rack is arranged linearly and movably in the elongated groove.

[0012] Preferably, the inner sides of the inner base are respectively provided with a long strip groove, so that during the installation process, the long strip groove in which the double-tooth rack is installed can be quickly determined according to the actual situation of the doors and windows, so as to realize the rapid installation of the handle without specially distinguishing between the left handle and the right handle before and after leaving the factory, thereby improving the installation efficiency of the handle.

[0013] Preferably, two positioning columns are integrally arranged on the rear side of the gear shaft fixing seat, and positioning holes matching the two positioning columns are opened on the cover plate, and each positioning column is embedded in one of the positioning holes. The cooperation between the positioning column and the positioning hole plays a further positioning role for the cover plate.

[0014] Compared with the prior art, the present invention has the following advantages: the double-tooth eccentric handle for doors and windows of the present invention is compact, stable and reliable, and the opening and locking operations are natural and smooth. The transmission mechanism composed of the large gear fixing seat, the small gear shaft, the double-tooth rack and the gear shaft fixing seat is an eccentric transmission mechanism. The matching lock box does not need to be grooved during installation. Under the premise of ensuring the standard stroke of the handle, the profile requirements for door and window sashes can be reduced, and the application range of the handle is expanded. It is applied to door and window types such as narrow-frame door and window types and outward-opening door and window types, which brings more space for the design of the matching lock box. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural exploded view of a double-tooth eccentric handle for doors and windows in an embodiment;

[0016] Figure 2 It is a side view of the double-tooth eccentric handle for doors and windows in the embodiment;

[0017] Figure 3 for Figure 2 Middle AA section view;

[0018] Figure 4 For the corresponding Figure 2 Left view of . DETAILED DESCRIPTION

[0019] The present invention is further described in detail below with reference to the accompanying drawings.

[0020] The double-toothed eccentric handle for doors and windows of Example 1, as shown in the figure, comprises a handle 1, an outer shell 2, an inner base 3, a cover plate 4 and a transmission mechanism installed on the inner side of the inner base 3, the outer shell 2 is arranged on the front side of the inner base 3, the cover plate 4 is covered on the rear side of the inner base 3, a plurality of screw holes 30 are respectively opened on the inner base 3 and the cover plate 4, the transmission mechanism comprises a large gear fixing seat 5, a small gear shaft 6, a double-tooth rack 7 and a gear shaft fixing seat 8, the handle 1 is coaxially fixedly connected with the large gear fixing seat 5 by screws, the large gear fixing seat 5 is arranged in the middle part of the inner base 3, a large gear 51 is integrally arranged on the rear side of the large gear fixing seat 5, a long strip groove 31 is arranged on the inner side of the inner base 3, and the long strip groove 31 is arranged along the length direction of the inner base 3, and the double-toothed rack 7 is arranged on the inner side of the inner base 3. The rack 7 can be linearly movably arranged in the long strip groove 31 and is located on one side of the large gear fixing seat 5. The double-tooth rack 7 is arranged along the length direction of the inner base 3. The double-tooth rack 7 includes a first rack 71 and a second rack 72 which are integrally arranged in the front and rear. The first rack 71 is meshed with the large gear 51. The gear shaft fixing seat 8 is arranged on the rear side of the large gear fixing seat 5. The front end of the pinion shaft 6 is rotatably installed on the gear shaft fixing seat 8. The rear end of the pinion shaft 6 passes through the cover plate 4. The rear end of the pinion shaft 6 is used to connect the transmission gear in the lock box (not shown in the figure). The outer ring of the pinion shaft 6 is integrally provided with a pinion 61. The pinion 61 is meshed with the second rack 72. The center line of the pinion 61 is eccentrically arranged with the center line of the large gear 51.

[0021] In Example 1, a first circular groove 32 concave forward is provided in the inner base 3, and the large gear fixing seat 5 is embedded in the first circular groove 32; a second circular groove concave forward is provided in the middle part of the rear side of the large gear fixing seat 5 (not shown in the figure), and a positioning ring 81 adapted to the second circular groove is integrally provided on the front side of the gear shaft fixing seat 8, and the positioning ring 81 is embedded in the second circular groove; four limiting plates 33 are integrally provided in the inner base 3, and the rear side of the gear shaft fixing seat 8 is generally drum-shaped, and the four limiting plates 33 are arranged at the four corners of the rear side of the gear shaft fixing seat 8, and the gear shaft fixing seat 8 is limited to the inner side of the four limiting plates 33.

[0022] In Example 1, a first arc-shaped notch (not shown in the figure) and a second arc-shaped notch 73 are provided on one side of the gear shaft fixing seat 8 close to the double-tooth rack 7. The first arc-shaped notch 73 is located in front of the second arc-shaped notch 73. The front end of the pinion shaft 6 is embedded in the first arc-shaped notch 73, and the pinion 61 is embedded in the second arc-shaped notch 73.

[0023] The double-tooth eccentric handle for doors and windows of Example 2 is different from that of Example 1 in that, in Example 2, a baffle 74 is integrally provided on the double-tooth rack 7, and the baffle 74 is arranged along the length direction of the inner base 3. The baffle 74 is located between the first rack 71 and the second rack 72, and the large gear 51 and the small gear 61 are in contact with the front side and the rear side of the baffle 74 respectively; two positioning columns 82 are integrally provided on the rear side of the gear shaft fixing seat 8, and positioning holes 41 matched with the two positioning columns 82 are opened on the cover plate 4, and each positioning column 82 is embedded in a positioning hole 41.

[0024] When installing the handle, first remove the screws connecting the handle 1 and the large gear fixing seat 5, take out the outer shell 2, and install the screws into the screw holes 30 to fix the matching lock box, or install screws into the other screw holes 30 to strengthen the fixation of the door and window sash, and then install the outer shell 2. The matching lock box is fixed to the door and window sash by screws, and no slot is required when installing the matching lock box.

[0025] Through the stroke design, during use, the handle 1 is rotated 90°, driving the large gear fixing seat 5 to rotate 90°, and then driving the double-tooth rack 7 to move a certain stroke in a straight line. At the same time, the double-tooth rack 7 drives the small gear shaft 6 to rotate 180°, thereby driving the transmission gear in the lock box, so that the lock box can achieve the same transmission stroke as the double-tooth rack 7, complete the corresponding opening and locking operations, achieve the required transmission effect, and make the best choice for the installation position of the handle on the window sash. In addition, the double-tooth eccentric handle of the present invention is compact, stable, and reliable, and its opening and locking operations are naturally smooth, which brings more space for the design of the matching lock box.

Claims

1. A double-tooth eccentric handle for doors and windows, comprising a handle, an outer shell, an inner base, a cover plate and a transmission mechanism installed on the inner side of the inner base, wherein the outer shell is arranged on the front side of the inner base, the cover plate is covered on the rear side of the inner base, and a plurality of screw holes are respectively provided on the inner base and the cover plate, wherein: The transmission mechanism comprises a large gear fixing seat, a pinion shaft, a double-tooth rack and a gear shaft fixing seat, the handle is coaxially fixedly connected to the large gear fixing seat by screws, the large gear fixing seat is arranged in the middle part of the inner base, a large gear is integrally arranged on the rear side of the large gear fixing seat, the double-tooth rack can be linearly movably arranged on one side of the large gear fixing seat, the double-tooth rack is arranged along the length direction of the inner base, the double-tooth rack comprises a first rack and a second rack integrally arranged front and back, the first rack is meshed with the large gear, the gear shaft fixing seat is arranged on the rear side of the large gear fixing seat, the front end of the pinion shaft is rotatably mounted on the gear shaft fixing seat, the rear end of the pinion shaft passes through the cover plate, the rear end of the pinion shaft is used to connect the transmission gear in the lock box, the outer ring of the pinion shaft is integrally provided with a pinion, the pinion is meshed with the second rack, and the center line of the pinion is eccentrically arranged with the center line of the large gear.

2. A double-tooth eccentric handle for doors and windows according to claim 1, characterized in that: A first circular groove concave forward is arranged in the inner base, and the large gear fixing seat is embedded in the first circular groove.

3. A double-tooth eccentric handle for doors and windows according to claim 2, characterized in that: A second circular groove concave forward is provided in the middle of the rear side of the large gear fixing seat, and a positioning ring matched with the second circular groove is integrally provided on the front side of the gear shaft fixing seat, and the positioning ring is embedded in the second circular groove.

4. A double-tooth eccentric handle for doors and windows according to claim 3, characterized in that: Four limiting plates are integrally arranged in the inner base, the rear side of the gear shaft fixing seat is generally drum-shaped, the four limiting plates are arranged at the four corners of the rear side of the gear shaft fixing seat, and the gear shaft fixing seat is limited to the inner side of the four limiting plates.

5. A double-tooth eccentric handle for doors and windows according to any one of claims 1 to 4, characterized in that: A first arc-shaped notch and a second arc-shaped notch are provided on one side of the gear shaft fixing seat close to the double-tooth rack, the first arc-shaped notch is located in front of the second arc-shaped notch, the front end of the pinion shaft is embedded in the first arc-shaped notch, and the pinion is embedded in the second arc-shaped notch.

6. A double-tooth eccentric handle for doors and windows according to claim 1, characterized in that: A baffle is integrally arranged on the double-tooth rack, and the baffle is arranged along the length direction of the inner base. The baffle is located between the first rack and the second rack, and the large gear and the small gear are in contact with the front side and the rear side of the baffle respectively.

7. The double-tooth eccentric handle for doors and windows according to claim 1, characterized in that: The inner side of the inner base is provided with a long strip groove, the long strip groove is arranged along the length direction of the inner base, and the double-tooth rack is arranged in the long strip groove so as to be linearly movable.

8. A double-tooth eccentric handle for doors and windows according to claim 7, characterized in that: The inner sides of the inner base are respectively provided with a long strip groove.

9. The double-tooth eccentric handle for doors and windows according to claim 1, characterized in that: Two positioning columns are integrally arranged on the rear side of the gear shaft fixing seat, and positioning holes matching with the two positioning columns are opened on the cover plate, and each positioning column is embedded in one of the positioning holes.

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