Transmission mechanism and transmission device

Abstract

The utility model relates to a transmission mechanism and a driver. A transmission assembly of the transmission mechanism comprises a transmission wheel, a first swing arm, a second swing arm, a third swing arm and a sliding block. The transmission wheel is rotatably mounted in the shell around a first direction, and a driving hole is formed in the center; the first swing arm is slidably installed in the shell in the second direction, one end is rotationally connected with the outer side of the transmission wheel, and the other end is rotationally connected with one end of the second swing arm. One end of the third swing arm is rotatably installed in the shell around the first direction, the other end of the third swing arm is slidably installed in a driving groove which is formed in the sliding block and extends in the third direction, and the other end of the second swing arm is rotatably connected with the position between the two ends of the third swing arm; the sliding block is installed in the shell in a sliding mode in the second direction, rotation of the transmission wheel acts on the second swing arm through sliding of the first swing arm in the second direction, the third swing arm is driven to rotate, and then the sliding block is promoted to slide in the second direction through sliding of the third swing arm in the driving groove. The transmission mechanism achieves stroke amplification and reduces the size of a driver.

Description

Technical Field

[0001] This application relates to door and window fittings technology, and more specifically, to a transmission mechanism and a drive employing the transmission mechanism. Background Technology

[0002] A door and window actuator is a functional accessory that transmits the rotation of the door or window handle to the lock to open or close the door or window sash. When applied to doors and windows, the actuator is first installed inside the cavity of the door or window profile, with the transmission rod on the actuator positioned close to the outer edge of the profile. The transmission component on the actuator aligns with the pre-drilled drive hole in the profile. The handle is then inserted into the drive hole and connected to the transmission component. Rotating the handle drives the transmission component, thereby transmitting torque to the transmission rod, causing it to move linearly to open or close the door or window.

[0003] On screens or extremely narrow window sashes, the installation space for the actuator is limited, which necessitates a small actuator size. While ensuring functionality and ease of installation, a mechanism is needed to amplify the rotational path of the small drive wheel to its end. Utility Model Content

[0004] The technical problem to be solved by this application is to provide a transmission mechanism that can amplify the transmission stroke and a transmission device using the transmission mechanism, in view of the above-mentioned defects of the prior art.

[0005] This application, in order to solve its technical problem, proposes a transmission mechanism in its first aspect, including a housing and a transmission assembly disposed in the housing. The transmission assembly converts the rotation of a handle about a first direction into linear motion along a second direction perpendicular to the first direction. The transmission assembly includes a transmission wheel, a first swing arm, a second swing arm, a third swing arm, and a slider. The transmission wheel is rotatably mounted in the housing about the first direction and has a drive hole at its center that mates with the handle. The first swing arm is slidably mounted in the housing along the second direction. One end of the first swing arm is rotatably connected to the outer side of the transmission wheel about the first direction, and the other end is connected to the second swing arm. One end of the arm is rotatably connected about a first direction; one end of the third swing arm is rotatably mounted in the housing about the first direction, and the other end is slidably mounted in the drive groove of the slider extending along a third direction perpendicular to both the first and second directions; the other end of the second swing arm and the two ends of the third swing arm are rotatably connected about the first direction; the slider is slidably mounted in the housing about the second direction; the rotation of the transmission wheel acts on the second swing arm through the sliding of the first swing arm about the second direction, driving the third swing arm to rotate, and then the sliding of the third swing arm about the drive groove causes the slider to slide about the second direction.

[0006] In one embodiment of the transmission mechanism according to the first aspect of this application, the transmission wheel is rotatably mounted in a first mounting hole that extends forward and backward along a first direction on the housing, and the drive hole of the transmission wheel is exposed through the first mounting hole.

[0007] In one embodiment of the transmission mechanism according to the first aspect of this application, the first swing arm is provided with a first guide post extending in a first direction at a position between its two ends, which is slidably mounted in a first guide groove extending in a second direction on the housing.

[0008] According to one embodiment of the transmission mechanism described in the first aspect of this application, one end of the first swing arm is provided with a first rotating shaft extending in a first direction and rotatably mounted between two first connecting ears formed on the outer periphery of the transmission wheel.

[0009] According to one embodiment of the transmission mechanism described in the first aspect of this application, one end of the second swing arm is provided with a second rotating shaft extending in a first direction and rotatably mounted between two second connecting ears formed at the other end of the first swing arm, and the other end of the second swing arm is provided with a third rotating shaft extending in the first direction and rotatably mounted between two connecting portions formed by the third swing arm.

[0010] According to one embodiment of the transmission mechanism described in the first aspect of this application, the slider has a mounting groove for accommodating the third swing arm at one end near the transmission wheel and a drive groove extending in the third direction is formed in the mounting groove; one end of the third swing arm is provided with a fourth rotating shaft extending in the first direction and is rotatably mounted in a corresponding second mounting hole on the housing, and the other end is provided with a second guide post extending in the first direction and is slidably mounted in the drive groove.

[0011] According to one embodiment of the transmission mechanism described in the first aspect of this application, guide blocks are respectively provided on both sides of the slider in the first direction and are slidably installed in the second guide grooves that are correspondingly opened on the outer casing and extend in the second direction.

[0012] According to one embodiment of the transmission mechanism described in the first aspect of this application, the housing includes a first housing and a second housing joined together in a first direction, and the transmission wheel, the first swing arm, the second swing arm, the third swing arm and the slider are disposed in the space enclosed by the first housing and the second housing.

[0013] To address its technical problem, this application proposes a transmission device in a second aspect, comprising a transmission mechanism and a transmission rod that moves linearly driven by the transmission mechanism, wherein the transmission mechanism is the aforementioned transmission mechanism, and the transmission rod moves linearly along a second direction together with the slider of the transmission mechanism.

[0014] According to one embodiment of the transmission device described in the second aspect of this application, the transmission rod has a transmission hole extending in a third direction, and the slider has a transmission screw threaded in a third direction. The transmission screw extends into the transmission hole and drives the transmission rod to move linearly in a second direction together with the slider.

[0015] The transmission mechanism and actuator of this application have the following beneficial effects: According to the embodiment of this application, the transmission mechanism causes the rotation of the handle drive transmission wheel about a first direction to act on the second swing arm through the sliding of the first swing arm along the second direction, driving the third swing arm to rotate. Furthermore, the sliding of the third swing arm along the drive groove causes the slider to slide along the second direction. Since one end of the third swing arm is rotatably mounted on the housing, the other end causes the slider to slide, and the middle part is rotatably connected to the second swing arm, the transmission stroke generated by the rotation of the transmission wheel is amplified, allowing the slider's movement distance to reach the expected displacement of the actuator. This reduces the overall size of the actuator while ensuring its functionality, making it suitable for smaller and narrower profiles. Attached Figure Description

[0016] The present application will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the structure of a transmission device according to an embodiment of this application;

[0018] Figure 2 This is an exploded structural diagram of a transmission mechanism according to an embodiment of this application;

[0019] Figure 3 yes Figure 2 The diagram shows an exploded view of the transmission assembly.

[0020] Figure 4 yes Figure 2 The diagram shown is a sectional view of the transmission mechanism.

[0021] Figure 5 yes Figure 2 An enlarged stroke schematic diagram of the transmission mechanism shown;

[0022] Reference numerals: 100 - Transmission device; 10 - Transmission mechanism; 11 - Housing; 111 - First housing; 112 - Second housing; 113 - First mounting hole; 114 - First guide groove; 115 - Sliding cavity; 116 - Second mounting hole; 117 - Second guide groove; 12 - Transmission assembly; 121 - Transmission wheel; 1211 - Drive hole; 1212 - First connecting ear; 122 - First swing arm; 1221 - First rotating shaft; 122 2-Second connecting ear; 1223-First guide post; 123-Second swing arm; 1231-Second rotating shaft; 1232-Third rotating shaft; 124-Third swing arm; 1241-Fourth rotating shaft; 1242-Connecting part; 1243-Second guide post; 125-Slider; 1251-Guide block; 1252-Mounting groove; 1253-Drive groove; 1254-Threaded hole; 126-Transmission screw; 20-Transmission rod; 21-Transmission hole. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. Furthermore, the embodiments and features described herein can be combined with each other unless otherwise specified.

[0024] Figure 1 A schematic diagram of a transmission 100 according to one embodiment of this application is shown. See also Figure 1 As shown, the transmission device 100 includes a transmission mechanism 10 and a transmission rod 20 that moves linearly driven by the transmission mechanism 10. The transmission device 100 is installed in the groove of the door and window profile, and converts the rotation of the handle into the linear movement of the transmission rod 20 through the transmission mechanism 10, thereby controlling the opening or locking of the door and window locks.

[0025] Figure 2 An exploded view of the transmission mechanism 10 according to one embodiment of this application is further shown. See also Figure 2 As shown, the transmission mechanism 10 includes a housing 11 and a transmission assembly 12. The housing 11 is further composed of a first housing 111 and a second housing 112 in a first direction (i.e., Figure 2 The transmission assembly 12 is configured by combining the first housing 111 and the second housing 112 in the front-to-back direction. See details. Figure 2 Combination Figure 3As shown, the transmission assembly 12 further includes a transmission wheel 121, a first swing arm 122, a second swing arm 123, a third swing arm 124, and a slider 125. The two ends of the transmission wheel 121 in a first direction are respectively rotatably mounted in corresponding first mounting holes 113 on the first housing 111 and the second housing 112, allowing the transmission wheel 121 to rotate around the first direction. A square drive hole 1211, which mates with the handle, is provided at the center of the transmission wheel 121. This drive hole 1211 is exposed through the first mounting hole 113 on the first housing 111 and the second housing 112, which extends back and forth along the first direction (see [reference]). Figure 1 As shown), a handle is connected to the first swing arm 122 so that the drive wheel 121 can be rotated by the handle. One end of the first swing arm 122 has a first rotating shaft 1221 extending in a first direction, which is rotatably mounted between two first connecting ears 1212 formed on the outer periphery of the drive wheel 121, achieving a rotatable connection with the drive wheel 121. The other end of the first swing arm 122 forms two second connecting ears 1222, which are rotatably mounted on the corresponding end of the second swing arm 123, which has a second rotating shaft 1231 extending in the first direction, achieving a rotatable connection with one end of the second swing arm 123. The first swing arm 122 also has a first guide post 1223 extending in the first direction at a position between its two ends, which is slidably mounted on the first housing 111 and the second housing 112, corresponding to the guide posts extending in the second direction (i.e.,...). Figure 2 The first guide groove 114 extends in the left-right direction, allowing the first swing arm 122 to slide along the second direction within the housing 11, guided by the first guide groove 114, as it rotates with the transmission wheel 121. The other end of the second swing arm 123 is provided with a third rotating shaft 1232 extending in the first direction, rotatably mounted between the two connecting portions 1242 formed by the third swing arm 124, achieving a rotatable connection with the third swing arm 124. See also... Figure 2 Combination Figure 3 As shown, the first housing 111 and the second housing 112 are combined to form a sliding cavity 115 extending in the second direction. A slider 125 is installed in the sliding cavity 115. Guide blocks 1251 are respectively provided on both sides of the slider 125 in the first direction, and are slidably installed in corresponding second guide grooves 117 extending in the second direction on the first housing 111 and the second housing 112, to guide the slider 125 to slide in the second direction. Furthermore, a mounting groove 1252 is formed at one end of the slider 125 near the transmission wheel 121, and a third direction (i.e.,...) is formed within the mounting groove 1252. Figure 2A drive groove 1253 extending in the vertical direction. A third swing arm 124 is housed in a mounting groove 1252 of a slider 125. One end of the third swing arm 124 is provided with a fourth rotating shaft 1241 extending in the first direction and is rotatably mounted in a second mounting hole 116 corresponding to a position on the first housing 111 and the second housing 112 near the bottom of the sliding cavity 115. The other end of the third swing arm 124 is provided with a second guide post 1243 extending in the first direction at the end of the two connecting parts 1242 and is slidably mounted in the drive groove 1253 of the slider 125.

[0026] Through the above transmission connection, the transmission mechanism 10 can convert the rotation of the handle into the linear movement of the slider 125. (See also...) Figure 4 As shown, when the handle is inserted into the drive hole 1211 of the transmission wheel 121, causing the transmission wheel 121 to rotate, the transmission wheel 121 drives the first swing arm 122 to slide in the second direction under the guidance of the first guide groove 114, while simultaneously rotating and acting on the second swing arm 123. This causes the second swing arm 123 to drive the third swing arm 124 to rotate relative to the outer casing 11 via the fourth rotating shaft 1241 at one end. Furthermore, the sliding of the second guide post 1243 at the other end of the third swing arm 124 along the drive groove 1253 causes the slider 125 to slide in the second direction under the guidance of the second guide groove 117. Moreover, since the second swing arm 123 is rotatably connected between the two ends of the third swing arm 124 (e.g., in the middle), while the second swing arm 123 drives the third swing arm 124 to rotate around one end, it simultaneously acts on the slider 125 through the other end, amplifying and transmitting the transmission stroke generated by the rotation of the transmission wheel 121 to the slider 125. (See also...) Figure 5 As shown, the translation distance d1 in the second direction generated by the 90° rotation of the transmission wheel 121 is transmitted to the slider 125 through the first swing arm 122, the second swing arm 123 and the third swing arm 124 to obtain the final translation distance d2 in the second direction, and d2 is greater than d1, thereby realizing stroke amplification.

[0027] See also Figure 1 Combination Figure 3 As shown, a threaded hole 1254 extending along a third direction is provided on the slider 125 of the transmission mechanism 10, and a transmission screw 126 is threadedly connected thereto. Correspondingly, a transmission hole 21 extending along a third direction is provided on the transmission rod 20. By unscrewing the transmission screw 126 on the slider 125 and inserting it into the transmission hole 21 on the transmission rod 20, the transmission rod 21 can be driven to move linearly along the second direction together with the slider 125.

[0028] According to the above embodiments of this application, the transmission mechanism 100, through the stroke amplification design of the transmission mechanism 10, can transmit and amplify the rotational stroke of the smaller transmission wheel 121, so that the moving distance of the end slider 125 and the transmission rod 20 can reach the expected displacement of the transmission mechanism 100, thereby reducing the overall size of the transmission mechanism 100 while ensuring the functionality of the transmission mechanism 100, making it suitable for smaller and narrower profiles.

[0029] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A transmission mechanism, comprising a housing and a transmission assembly disposed within the housing, the transmission assembly converting rotation of a handle about a first direction into linear motion along a second direction perpendicular to the first direction, characterized in that: The transmission assembly includes a transmission wheel, a first swing arm, a second swing arm, a third swing arm, and a slider; The transmission wheel is mounted in the housing and rotates around a first direction, with a drive hole in the center that cooperates with the handle; The first swing arm is slidably mounted in the housing along the second direction. One end of the first swing arm is rotatably connected to the outer side of the transmission wheel around the first direction, and the other end is rotatably connected to one end of the second swing arm around the first direction. One end of the third swing arm is rotatably mounted in the housing about the first direction, and the other end is slidably mounted in the drive groove of the slider that extends in a third direction perpendicular to both the first and second directions. The other end of the second swing arm and the two ends of the third swing arm are rotatably connected about the first direction. The slider is slidably mounted in the housing along the second direction. The rotation of the transmission wheel acts on the second swing arm through the sliding of the first swing arm along the second direction, driving the third swing arm to rotate. In turn, the slider is slid along the second direction by the sliding of the third swing arm along the drive groove.

2. The transmission mechanism according to claim 1, characterized in that, The drive wheel is rotatably mounted in a first mounting hole that extends forward and backward along a first direction on the outer casing, and the drive hole of the drive wheel is exposed through the first mounting hole.

3. The transmission mechanism according to claim 1, characterized in that, The first swing arm is provided with a first guide post extending in a first direction at a position between its two ends, which is slidably mounted in a first guide groove extending in a second direction on the outer casing.

4. The transmission mechanism according to claim 1, characterized in that, One end of the first swing arm is provided with a first rotating shaft extending in a first direction and rotatably mounted between two first connecting ears formed on the outer periphery of the transmission wheel.

5. The transmission mechanism according to claim 1, characterized in that, One end of the second swing arm is provided with a second rotating shaft extending in the first direction and is rotatably mounted between two second connecting ears formed at the other end of the first swing arm. The other end of the second swing arm is provided with a third rotating shaft extending in the first direction and is rotatably mounted between two connecting parts formed by the third swing arm.

6. The transmission mechanism according to claim 1, characterized in that, The slider has a mounting groove for accommodating the third swing arm at one end near the transmission wheel, and a drive groove extending along the third direction is formed in the mounting groove; one end of the third swing arm is provided with a fourth rotating shaft extending along the first direction and is rotatably mounted in a corresponding second mounting hole on the housing, and the other end is provided with a second guide post extending along the first direction and is slidably mounted in the drive groove.

7. The transmission mechanism according to claim 1, characterized in that, The slider has guide blocks on both sides in the first direction, which are slidably installed in the second guide grooves that extend in the second direction on the outer shell.

8. The transmission mechanism according to claim 1, characterized in that, The housing includes a first housing and a second housing joined together in a first direction, and the drive wheel, the first swing arm, the second swing arm, the third swing arm and the slider are disposed in the space enclosed by the first housing and the second housing.

9. A transmission device, comprising a transmission mechanism and a transmission rod that moves linearly driven by said transmission mechanism, characterized in that, The transmission mechanism is any one of claims 1-8, and the transmission rod moves linearly along the second direction together with the slider of the transmission mechanism.

10. The transmission device according to claim 9, characterized in that, The transmission rod has a transmission hole that runs through a third direction, and the slider has a transmission screw that is threaded in a third direction. The transmission screw extends into the transmission hole and drives the transmission rod to move linearly along the second direction together with the slider.

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