A transmission conversion device

Abstract

This utility model relates to the field of door and window technology, specifically disclosing a transmission conversion device, including a door and window profile, a handle, and a transmission rod. One end of the transmission rod slides longitudinally with the door and window profile, and the other end of the transmission rod is slidably connected to a converter. After the converter slides to a predetermined position, it is fixed to the transmission rod by a set screw. The converter is provided with a slot for the handle's fork to insert into. This application achieves rapid installation of the converter without milling by using a method of slidably positioning the converter with the transmission rod and locking it with a set screw, inserting the entire transmission rod into a pre-set slot in the profile, and inserting the handle's fork into the converter. This significantly simplifies the assembly process and reduces the profile processing cost. The position of the converter can be flexibly adjusted to adapt to different window type requirements. The transmission rod does not need to be cut in sections, reducing processing steps. The overall transmission chain is simple and direct, effectively reducing movement gaps and improving transmission sensitivity and reliability.

Description

Technical Field

[0001] This utility model relates to the field of door and window technology, and in particular to a transmission conversion device. Background Technology

[0002] Doors and windows are an indispensable part of modern buildings, and their performance directly affects the building's comfort and energy efficiency. Air tightness is one of the key indicators of door and window performance, primarily determined by the compression of the sealing strip. The compression of the sealing strip depends on the effective cooperation between the fixed locking seat on the window frame and the movable locking point on the window sash. When the window sash is closed, the locking point needs to move precisely to its position to mate with the locking seat, achieving sufficient compression of the sealing strip to form a seal. The movement of the locking point is usually achieved through a transmission rod, whose movement depends on the operation of the handle. Therefore, the reliability and efficiency of the transmission conversion device are crucial to the air tightness of doors and windows.

[0003] In existing technologies, such as the handle fixing device disclosed in Chinese Utility Model Patent CN207960177U, the main improvement lies in enhancing the fixing strength and stability of the handle on the profile, employing a fixing assembly including a fixing plate and a positioning post, as well as a locking component for fastening. However, this patent and other common existing transmission solutions have a common problem in the installation method of the conversion mechanism that transmits the handle operating force to the transmission rod. Specifically, such solutions usually require the conversion mechanism (such as a lock box or similar component) to be pre-precisely installed in place. This process often requires complex milling grooves in the door and window profiles to accommodate and fix the conversion mechanism. This milling operation not only adds additional processing steps and costs but also limits the flexibility and convenience of installation. Once the installation position is determined, it is difficult to adjust, and the complex structure of the conversion mechanism itself also leads to high manufacturing costs. In addition, this type of fixed-installation conversion mechanism usually requires the transmission rod to be cut into segments at specific locations to adapt to the installation point, further increasing the complexity of the process and potential transmission error points.

[0004] Therefore, although existing technologies such as CN207960177U have made improvements in handle fixing, there are still technical problems that urgently need to be solved in terms of ease of installation of the force conversion mechanism between the handle and the transmission rod, avoiding profile milling, reducing system costs, and improving transmission directness and sensitivity. The industry needs a new conversion structure design that can overcome these limitations. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a transmission conversion device to solve the above problems.

[0006] A transmission conversion device includes a door / window profile, a handle fixed to the door / window profile, and a transmission rod that is pulsatorically connected to the handle. One end of the transmission rod is slidably engaged with the door / window profile in a longitudinal direction, and the other end of the transmission rod is slidably connected to a converter. After the converter slides to a predetermined position, it is fixed to the transmission rod by a set screw. The converter is provided with a slot for the fork of the handle to be inserted.

[0007] Specifically, the transverse cross-section of the transmission rod is I-shaped, and the transmission rod is inserted longitudinally into the mounting groove of the door and window profile.

[0008] Specifically, the converter is provided with a slot, and the transmission rod is provided with a T-shaped slider, which can be inserted vertically into the slot.

[0009] Specifically, the transmission rod has a vertical circular hole in the middle, and the debris generated when the set screw is screwed into the transmission rod is hidden in the circular hole.

[0010] Specifically, the converter has two mounting holes distributed longitudinally, and the two set screws are screwed into the transmission rod after passing through the two mounting holes respectively.

[0011] Specifically, the handle includes a housing fixed to the door and window profile, a handle rotatably mounted on the housing, a gear connected to one end of the handle and located inside the housing, a rack located inside the housing and meshing with the gear, a fork fixed to the rack, the housing fixed to the door and window profile by fixing screws, and a strip groove on the door and window profile for the fork to pass through and move in the vertical direction.

[0012] The beneficial effects of this utility model are:

[0013] This application discloses a transmission conversion device, including a door / window profile, a handle, and a transmission rod. One end of the transmission rod slides longitudinally with the door / window profile, and the other end is slidably connected to a converter. After the converter slides to a predetermined position, it is fixed to the transmission rod by a set screw. The converter has a slot for the handle's fork to insert into. This application achieves rapid installation of the converter without milling by using a method of sliding and positioning the converter with the transmission rod and locking it with a set screw, inserting the entire transmission rod into a pre-set slot in the profile, and inserting the handle's fork into the converter. This significantly simplifies the assembly process and reduces the profile processing cost. The converter's position can be flexibly adjusted to adapt to different window type requirements. The transmission rod does not need to be segmented and cut, reducing processing steps. The overall transmission chain is simple and direct, effectively reducing movement gaps and improving transmission sensitivity and reliability. Attached Figure Description

[0014] Figure 1 This is an exploded view of the transmission conversion device of this application;

[0015] Figure 2 This is a perspective view of the transmission conversion device of this application;

[0016] Figure 3 This is a bottom view of the transmission conversion device of this application;

[0017] Figure 4 This is a front view of the transmission conversion device of this application;

[0018] Figure 5 This is a cross-sectional view showing the transmission rod and converter of this application fixed by set screws;

[0019] Figure 6 This is a schematic diagram of the handle structure of this application.

[0020] The attached figures are labeled as follows: door and window profile 10, handle 20, transmission rod 30, converter 40, set screw 50, shift fork 21, slot 41, mounting groove 11, card slot 42, T-shaped slider 31, round hole 32, mounting hole 43, outer shell 22, handle 23, gear 24, rack 25, and strip groove 12. Detailed Implementation

[0021] This utility model provides a transmission conversion device. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0022] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limiting this invention.

[0023] Please refer to Figures 1 to 6 This embodiment discloses a transmission conversion device, including a door and window profile 10, a handle 20 fixed on the door and window profile 10, and a transmission rod 30 that is transmissionally connected to the handle 20. One end of the transmission rod 30 is slidably engaged with the door and window profile 10 in the longitudinal direction, and the other end of the transmission rod 30 is slidably connected to a converter 40. After the converter 40 slides to a predetermined position, it is fixed to the transmission rod 30 by a set screw 50. The converter 40 is provided with a slot 41 for the fork 21 of the handle 20 to be inserted.

[0024] During installation, first, the converter 40 is directly fitted onto the transmission rod 30 and slid along it to the desired position. Then, the set screw 50 is tightened so that it passes through the converter 40 and is pressed and fixed onto the transmission rod 30. Next, the entire transmission rod 30 with the converter 40 assembled is inserted into the pre-set mounting groove of the door and window profile 10 to achieve a longitudinal sliding fit. Finally, the handle 20 is fixedly installed on the surface of the door and window profile 10, ensuring that its fork 21 is accurately inserted into the slot 41 of the converter 40, thereby completing the assembly of the entire device.

[0025] This embodiment enables milling-free installation of the converter 40, significantly simplifying the assembly process and reducing profile processing costs; the position of the converter 40 can be flexibly adjusted to adapt to different design requirements; the transmission rod 30 does not require segmented cutting, reducing process steps; the overall transmission chain is simple and direct, effectively reducing movement clearance and improving transmission sensitivity and reliability.

[0026] Please refer to Figures 1 to 3 The transmission rod 30 has an overall I-shaped cross-section and is inserted longitudinally into the mounting groove 11 of the door / window profile 10. During installation, the I-shaped transmission rod 30 is directly inserted longitudinally into the pre-set mounting groove 11 of the door / window profile 10, achieving a stable sliding fit by matching the shape of the I-shaped structure with the groove. The I-shaped structure of the transmission rod 30 enhances its bending stiffness, and its embedded fit with the mounting groove 11 allows for precise guidance without additional fasteners, simplifying the assembly process and effectively limiting lateral displacement, thus improving transmission stability.

[0027] Please refer to Figure 1 The converter 40 is equipped with a slot 42, and the transmission rod 30 is equipped with a T-shaped slider 31. The T-shaped slider 31 can be vertically inserted into the slot 42. After insertion, both can achieve rapid pre-positioning and radial limiting. Then, the converter 40 is slid to the target position and finally locked by the set screw 50. The snap-fit ​​installation simplifies the assembly process of the converter 40 and the transmission rod 30, ensuring that they remain stably aligned before fixing and avoiding misalignment or tilting. At the same time, the tight fit between the T-shaped slider 31 and the slot 42 enhances the torsional resistance, further reduces the transmission gap, and improves the overall structural rigidity.

[0028] Please refer to Figure 3 and Figure 5 The transmission rod 30 has a vertical circular hole 32 in the middle. When the set screw 50 is screwed into the transmission rod 30, the debris generated is hidden in the circular hole 32, which can effectively prevent debris from remaining on the surface of the transmission rod 30 or sliding into the mounting groove 11 and causing transmission jamming, thus ensuring smooth transmission.

[0029] Please refer to Figure 1The converter 40 has two mounting holes 43 distributed longitudinally. During installation, two set screws 50 are passed through the two mounting holes 43 and screwed into the transmission rod 30, and then symmetrically screwed into the transmission rod 30 in sequence to achieve double locking. The symmetrical layout of the two screws effectively disperses the locking stress and avoids the converter 40 from tilting due to single-point force; at the same time, it enhances the connection rigidity between the converter 40 and the transmission rod 30, completely eliminates the risk of relative displacement, and ensures transmission accuracy.

[0030] Please refer to Figure 6 The handle 20 includes a housing 22 fixed to the door / window profile 10, a handle 23 rotatably mounted on the housing 22, a gear 24 connected to one end of the handle 23 and located inside the housing 22, a rack 25 located inside the housing 22 and meshing with the gear 24, a fork 21 fixed to the rack 25, and the housing 22 fixed to the door / window profile 10 by fixing screws. The door / window profile 10 has a slot 12 for the fork 21 to pass through and move vertically. During installation, the housing 22 of the handle 20 is first vertically locked to the surface of the door / window profile 10 by fixing screws, and the fork 21 at the end of the rack 25 passes through the slot 12 of the profile 10 and is finally inserted into the slot 41 of the converter 40. By setting the strip groove 12, the up and down linear motion of the shift fork 21 can be realized; the meshing transmission of the gear 24 and the rack 25 efficiently converts the rotation of the handle 23 into the linear output of the shift fork 21, and combined with the converter 40, the power is directly transmitted, effectively eliminating the redundant transmission links of the traditional lock box structure, and significantly improving the response speed and operation smoothness.

[0031] The preferred embodiments of this utility model have been described in detail above. However, this invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this invention.

Claims

1. A transmission conversion device, comprising a door / window profile (10), a handle (20) fixed to the door / window profile (10), and a transmission rod (30) pulverically connected to the handle (20), characterized in that, One end of the transmission rod (30) is slidably engaged with the door and window profile (10) in the longitudinal direction, and the other end of the transmission rod (30) is slidably connected to a converter (40). After the converter (40) slides to a predetermined position, it is fixed to the transmission rod (30) by a set screw (50). The converter (40) is provided with a slot (41) for the fork (21) of the handle (20) to be inserted.

2. The transmission conversion device according to claim 1, characterized in that, The transverse cross section of the transmission rod (30) is I-shaped, and the transmission rod (30) is inserted longitudinally into the mounting groove (11) of the door and window profile (10).

3. A transmission conversion device according to claim 1 or 2, characterized in that, The converter (40) is provided with a slot (42), and the transmission rod (30) is provided with a T-shaped slider (31), which can be inserted vertically into the slot (42).

4. The transmission conversion device according to claim 1, characterized in that, The transmission rod (30) has a vertical circular hole (32) in the middle, and the debris generated when the set screw (50) is screwed into the transmission rod (30) is hidden in the circular hole (32).

5. A transmission conversion device according to claim 1, characterized in that, The converter (40) has two mounting holes (43) distributed longitudinally, and the two set screws (50) are screwed into the transmission rod (30) after passing through the two mounting holes (43).

6. The transmission conversion device according to claim 1, characterized in that, The handle (20) includes a housing (22) fixed to the door and window profile (10), a handle (23) rotatably disposed on the housing (22), a gear (24) connected to one end of the handle (23) and located inside the housing (22), and a rack (25) disposed inside the housing (22) and meshing with the gear (24). The fork (21) is fixed to the rack (25). The housing (22) is fixed to the door and window profile (10) by fixing screws. The door and window profile (10) is provided with a strip groove (12) through which the fork (21) passes and moves in the vertical direction.

Images