Swing arm driver

Abstract

The utility model discloses a swing arm driver which comprises a shell, a servo motor, a driving arm and a lifting hook, an installation cavity of the servo motor is arranged on the shell, the servo motor is fixed in the installation cavity, the driving arm is connected with the servo motor, a guide portion is arranged on the shell, the lifting hook is vertically connected with the guide portion in a sliding mode, and the servo motor is used for driving the driving arm to rotate in a reciprocating mode. And upward driving force is provided for the lifting hook. The driving arm is driven by the servo motor to swing in a reciprocating mode so as to push the lifting hook to move upwards, and automatic flushing is achieved. The lifting hook is in sliding connection with the guide part, and reliable sliding connection between the lifting hook and the shell is achieved through mutual matching and restraining of the first guide strip and the second guide groove and mutual matching and restraining of the second guide strip and the first guide groove. Inclined surfaces are arranged on the limiting block and the limiting part, so that lower assembly of the lifting hook can be realized.

Description

Technical Field

[0001] This utility model relates to the field of bathroom fixtures, and in particular to a swing arm actuator. Background Technology

[0002] Chinese patent CN208533659U discloses a dual-containment drain valve with two pull rings, one for small flush and one for large flush. The appropriate pull ring is selected to open the valve based on different drainage volume requirements. The drain valve is installed inside a water tank, and existing structures achieve mechanical transmission through a connecting structure. However, a significant drawback of mechanical transmission is that in public places, hands need to touch and press the button, which promotes the spread of bacteria. Existing systems use non-contact sensors to control the actuator to open the drain valve, effectively avoiding contact. Therefore, there is an urgent need for an actuator. Utility Model Content

[0003] To address the shortcomings of the existing technology, the main objective of this utility model is to overcome these deficiencies by disclosing a swing arm driver, comprising a housing, a servo motor, a drive arm, and a lifting hook. The housing has a mounting cavity for the servo motor, which is fixed within the cavity. The drive arm is connected to the servo motor. The housing has a guide portion, and the lifting hook is vertically slidably connected to the guide portion. The servo motor drives the drive arm to reciprocate, providing an upward driving force for the lifting hook.

[0004] Furthermore, the guide portion includes a first guide bar disposed on the housing, and a first guide groove is formed between the first guide bar and the housing.

[0005] Furthermore, the lifting hook includes a lifting hook body with a driving part and a hooking part disposed on the lifting hook body. The lifting hook body is slidably connected to the guide part. The hooking part is hooked onto the drain valve. The driving arm pushes the lifting hook upward through the driving part.

[0006] Furthermore, the contact surface between the driving unit and the driving arm is an inclined surface.

[0007] Furthermore, the drive arm includes a connecting arm and a contact portion, wherein the contact portion has an arc-shaped contact surface with the lifting hook.

[0008] Furthermore, a connecting hole is provided on one side of the connecting arm, and protruding keys are provided at intervals on the inner wall of the connecting hole.

[0009] Furthermore, the lifting hook body is provided with a second guide groove that cooperates with the guide portion, and a second guide bar that cooperates with the first guide groove of the guide portion.

[0010] Furthermore, the guide portion is in clearance fit with the second guide groove, and the first guide groove is in clearance fit with the second guide bar.

[0011] Furthermore, a limiting block is provided on the housing, and a limiting part is provided on the hook, and the lower limit position of the hook is determined by the limiting block and the limiting part.

[0012] Furthermore, the guide portion is disposed on both sides of the housing, and two lifting hooks are provided, which are slidably connected to the guide portions on both sides of the housing respectively.

[0013] The beneficial effects achieved by this utility model are as follows:

[0014] This invention uses a servo motor to drive the drive arm to swing back and forth, thereby pushing the lifting hook upward to achieve automated flushing. The lifting hook is slidably connected to the guide part, and a reliable sliding connection between the lifting hook and the housing is achieved through the cooperation and restraint between the first guide bar and the second guide groove, and the second guide bar and the first guide groove. An inclined surface is provided on the limiting block and the limiting part to allow for assembly below the lifting hook. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of a swing arm actuator according to the present invention;

[0016] Figure 2 for Figure 1 A three-dimensional structural diagram from another perspective;

[0017] Figure 3 for Figure 2 Enlarged view of A in the middle;

[0018] Figure 4 for Figure 1 Top view;

[0019] Figure 5 for Figure 4 Enlarged view of A in the middle;

[0020] Figure 6 This is a three-dimensional structural diagram of the drive arm;

[0021] Figure 7 for Figure 6 A three-dimensional structural diagram from another perspective;

[0022] Figure 8 A three-dimensional structural diagram of the lifting hook;

[0023] The attached figures are labeled as follows:

[0024] 1. Housing, 2. Servo motor, 3. Drive arm, 4. Lifting hook, 5. Guide part, 6. Limiting block, 31. Connecting arm, 32. Contact part, 41. Lifting hook body, 31. Connecting arm, 32. Contact part, 311. Protruding key, 41. Lifting hook body, 42. Drive part, 43. Hook part, 44. Limiting part, 411. Second guide groove, 412. Second guide bar, 51. First guide bar, 52. First guide groove. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below 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.

[0026] A type of swing arm actuator, such as Figures 1-8 As shown, the device includes a housing 1, a servo motor 2, a drive arm 3, and a lifting hook 4. The housing 1 has a mounting cavity for the servo motor, and the servo motor 2 is fixed inside the mounting cavity. The housing 1 is installed inside the water tank to secure the servo motor 2. The drive arm 3 is connected to the servo motor 2. A guide part 5 is provided on the housing 1, and the lifting hook 4 is vertically slidably connected to the guide part 5. The servo motor 2 drives the drive arm 3 to reciprocate, pushing the lifting hook 4 upwards. During the resetting process of the servo motor 2, because the lifting hook 4 is connected to the drain valve, it automatically descends under gravity.

[0027] In one embodiment, such as Figures 1-8 As shown, the drain valve typically has both large and small flushing functions. Two guide parts 5 are provided, and the drive arm 3 is controlled by the servo motor 2 to swing clockwise or counterclockwise, so as to control the two lifting hooks 4 respectively, thereby realizing the function of selecting the large flushing and small flushing of the drain valve.

[0028] In one embodiment, such as Figures 1-8 As shown, the guide portion 5 includes a first guide bar 51 disposed on the housing 1, and a first guide groove 52 is formed between the first guide bar 51 and the housing 1.

[0029] In one embodiment, such as Figures 1-8 As shown, the lifting hook 4 includes a lifting hook body 41 with a drive part 42 and a hook part 43 disposed on the lifting hook body 41. The lifting hook body 41 is slidably connected to the guide part 5. The hook part 43 is hooked onto the drain valve. The drive arm 3 pushes the lifting hook 4 upward through the drive part 42.

[0030] In the above embodiments, such as Figures 1-8 As shown, the contact surface between the drive unit 42 and the drive arm 3 is an inclined plane. This reduces the contact area between the drive arm 3 and the drive unit 42, thereby reducing the friction between them and allowing the hook 4 to move upward stably.

[0031] In one embodiment, such as Figures 1-8 As shown, the drive arm 3 includes a connecting arm 31 and a contact portion 32. The contact portion 32 has an arc-shaped contact surface with the lifting hook 4. Specifically, the contact portion 32 contacts the inclined surface of the drive portion 42, and the arc-shaped structure makes the fit between the two smoother. In the above embodiment, the lifting hook 4 is provided on both sides of the housing 1, and the contact portion 32 is provided on both sides of the connecting portion 31.

[0032] In the above embodiments, such as Figures 1-8 As shown, a connecting hole is provided on one side of the connecting arm 31, and raised keys 311 are spaced apart on the inner wall of the connecting hole. Correspondingly, a keyway is provided on the rotating shaft of the servo motor 2. The connecting hole fits onto the rotating shaft, allowing the raised keys 311 to be inserted into the keyway, thus achieving a quick connection between the connecting arm 31 and the servo motor 2. In addition, to further improve the reliability of the connection between the connecting arm 31 and the servo motor, the connecting arm 31 and the servo motor 2 are also locked together with screws to prevent axial movement of the connecting arm 31.

[0033] In one embodiment, such as Figures 1-8 As shown, the hook body 41 is provided with a second guide groove 411 that cooperates with the guide part 5, and a second guide bar 412 that cooperates with the first guide groove 52 of the guide part 5. Specifically, the hook 4 is slidably connected to the guide part 5 on the housing 1. The first guide bar 51 of the guide part 5 is placed in the second guide groove 411, and the second guide bar 412 is placed in the first guide groove 52. Through the mutual sliding connection and restraint between the first guide bar 51 and the second guide groove 411, and between the second guide bar 412 and the first guide groove 52, the hook 4 is assembled with the housing 1, and the hook 4 is guided to move up and down.

[0034] In the above embodiments, such as Figures 1-8 As shown, the guide part 4 is in clearance fit with the second guide groove 411, and the first guide groove 52 is in clearance fit with the second guide bar 412.

[0035] In one embodiment, such as Figures 1-8 As shown, a limiting block 6 is provided on the housing 1, and a limiting part 44 is provided on the hook 4. The lower limit position of the hook is determined by the limiting block 6 and the limiting part 44. Preferably, the upper end of the limiting block 6 and the lower end of the limiting part 44 are provided with mutually cooperating inclined surfaces to increase the assembly direction of the hook 4 and the housing 1. During normal assembly, the lower end of the second guide groove 411 is aligned with the upper end of the guide part 5, and the hook 4 is moved downward to complete the assembly of the hook 4 and the housing 1. Through the inclined surfaces provided on the limiting block 6 and the limiting part 44, the upper end of the second guide groove 411 is aligned with the lower end of the guide part 5, and the hook 4 is moved upward. When it reaches the limiting block 6, the inclined surfaces on the limiting block 6 and the limiting part 4 guide the two to deform, so that the limiting part 44 reaches above the limiting block 6.

[0036] When using this utility model, such as Figures 1-8As shown, the housing 1 is fixed to the upper part inside the water tank to avoid contact with water. The hook parts 43 of the two hooks 4 are respectively connected to the large and small flushing rings of the drain valve, controlling the large and small flushing functions of the drain valve respectively. During operation, when a large or small flushing is required, the servo motor 2 controls the drive arm 3 to rotate clockwise or counterclockwise. The contact part 32 of the drive arm 3 contacts the drive part 42, which pushes the hook 4 to move upward along the guide part 5 through the drive part 42, and drives the drain valve to open through the hook part 43. After reaching the position, the servo motor 2 drives the drive arm 3 to reset; the hook 4 will slide down as the drain valve closes, and slide down to the limit part 44 to contact the limit block 6.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of implementation of the present utility model. Any modifications or equivalent substitutions to the present utility model without departing from the spirit and scope thereof should be covered within the protection scope of the claims of the present utility model.

Claims

1. A swing arm actuator, characterized in that, The device includes a housing, a servo motor, a drive arm, and a lifting hook. The housing has a mounting cavity for the servo motor, which is fixed inside the cavity. The drive arm is connected to the servo motor. The housing has a guide portion, and the lifting hook is vertically slidably connected to the guide portion. The servo motor drives the drive arm to reciprocate, providing an upward driving force for the lifting hook.

2. The swing arm actuator according to claim 1, characterized in that, The guide portion includes a first guide bar disposed on the housing, and a first guide groove is formed between the first guide bar and the housing.

3. A swing arm actuator according to claim 1, characterized in that, The lifting hook includes a lifting hook body with a drive part and a hooking part disposed on the lifting hook body. The lifting hook body is slidably connected to the guide part. The hooking part is hooked onto the drain valve. The drive arm pushes the lifting hook upward through the drive part.

4. A swing arm actuator according to claim 3, characterized in that, The contact surface between the drive unit and the drive arm is an inclined surface.

5. A swing arm actuator according to claim 1, characterized in that, The drive arm includes a connecting arm and a contact part, and the contact part has an arc-shaped contact surface with the lifting hook.

6. A swing arm actuator according to claim 5, characterized in that, A connecting hole is provided on one side of the connecting arm, and protruding keys are provided at intervals on the inner wall of the connecting hole.

7. A swing arm actuator according to claim 3, characterized in that, The hook body is provided with a second guide groove that cooperates with the guide portion, and a second guide bar that cooperates with the first guide groove of the guide portion.

8. A swing arm actuator according to claim 7, characterized in that, The guide portion is in clearance fit with the second guide groove, and the first guide groove is in clearance fit with the second guide bar.

9. A swing arm actuator according to claim 1, characterized in that, A limiting block is provided on the housing, and a limiting part is provided on the hook. The lower limit position of the hook is determined by the limiting block and the limiting part.

10. A swing arm actuator according to claim 1, characterized in that, The guide portion is disposed on both sides of the housing, and two lifting hooks are provided, which are slidably connected to the guide portions on both sides of the housing respectively.

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