Manual adjusting mechanism for actuator, actuator and straight stroke valve
Through the split design of manual gears and gear shafts, the problems of high machining difficulty and cost in the prior art are solved, and the effects of simplified processing and cost reduction are achieved.
Patent Information
- Application Number
- CN202422320850.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-09-23
AI Technical Summary
In the prior art, the integrated design of manual gears and gear shafts leads to high processing difficulties and increased costs, and the heat treatment deformation is difficult to eliminate, and the material cost is high.
The manual gear and gear shaft are designed separately. The gear shaft is fixed to the lower housing, and the upper housing only plays a supporting role. The connector rotates the manual gear simultaneously, simplifying the processing process and reducing material costs.
The centering requirements between the upper case and the lower case are reduced, the heat treatment deformation is eliminated, the post-heat treatment processing process is reduced, and the production cost is effectively reduced.
Smart Images
Figure CN223203830U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to a manual adjustment mechanism for an actuator, an actuator provided with the manual adjustment mechanism, and a linear valve equipped with the actuator. Background Art
[0002] The information provided in this section is for the purpose of generally presenting the background of the present disclosure. To the extent described in this section, the work of the presently named inventors and aspects of the description that may not constitute prior art at the time of filing are neither explicitly nor implicitly admitted to be prior art to the present disclosure.
[0003] Actuators, particularly linear actuators, are essential components of automatic control systems. Depending on the drive method, linear actuators are generally categorized as mechanical, pneumatic, hydraulic, and electromechanical linear actuators. Electromechanical linear actuators convert rotary motion into linear motion through a motor and are widely used in machine tools and industrial machinery, valves, dampers, and many other applications requiring linear motion. Utility Model Content
[0004] In the manual adjustment mechanism for an actuator according to the present application, the actuator includes a lower housing and an upper housing fixed to the lower housing, and the manual adjustment mechanism includes:
[0005] a manual structure, the manual structure being rotatably fixed to the upper housing;
[0006] a gear shaft, the gear shaft being fixed on the lower housing;
[0007] a manual gear rotatably mounted on the gear shaft; and
[0008] A connecting member having a first end and a second end, wherein the first end of the connecting member can rotate synchronously with the manual structure, and the second end of the connecting member can rotate synchronously with the manual gear.
[0009] In another advantageous embodiment of the manual adjustment mechanism for an actuator according to the present application, the manual gear is provided with external teeth, and the second end of the connecting member is provided with internal teeth, and the internal teeth are fixedly connected to the external teeth of the gear shaft in a meshing manner; or
[0010] The second end of the connecting member is fixedly connected to the manual gear by means of clamping, welding or bolting.
[0011] In another advantageous embodiment of the manual adjustment mechanism for an actuator according to the present application, one end of the manual structure has an opening, and an inner contour of the opening is adapted to an outer contour of the first end of the connecting member.
[0012] In yet another advantageous embodiment of the manual adjustment mechanism for an actuator according to the present application, the cross-sectional shape of the first end of the connecting member is triangular, quadrilateral, pentagonal, or hexagonal.
[0013] In another advantageous embodiment of the manual adjustment mechanism for an actuator according to the present application, the manual gear is mounted on the gear shaft via a bushing or a bearing.
[0014] In another advantageous embodiment of the manual adjustment mechanism for an actuator according to the present application, there are two bushings or bearings, which are of the same size and are clamped on the center hole of the manual gear.
[0015] In another advantageous embodiment of the manual adjustment mechanism for an actuator according to the present application, the upper housing is formed by an injection molded part; and / or
[0016] The lower housing is formed of an aluminum casting; and / or
[0017] The connecting piece is made of an injection molded piece.
[0018] In another advantageous embodiment of the manual adjustment mechanism for the actuator according to the present application, the gear shaft is fixed to the lower housing by means of crimping; and / or
[0019] The upper shell is fixed to the lower shell by means of bolt connection.
[0020] According to the present application, an actuator is also provided, wherein the actuator is provided with the above-mentioned manual adjustment mechanism.
[0021] According to the present application, a linear valve is also provided, wherein the linear valve is equipped with the above-mentioned actuator.
[0022] As can be seen, the manual adjustment mechanism for the actuator in this application is simple in structure and easy to operate. The split design of the manual gear and gear shaft reduces subsequent processing steps for the gear shaft and effectively reduces costs. Furthermore, with a split design of the manual gear and gear shaft, the bushing only needs to be fully press-fitted onto the gear shaft in the lower housing. This reduces the alignment requirements between the lower and upper housings, further reducing alignment costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The disclosure of this application will be more easily understood with reference to the accompanying drawings. Those skilled in the art will readily appreciate that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. Furthermore, similar numbers in the figures represent similar components, where:
[0024] Figure 1 A schematic cross-sectional view showing a known manual adjustment mechanism for an actuator;
[0025] Figure 2 exemplarily shows a cross-sectional schematic diagram of a manual adjustment mechanism for an actuator disclosed in the present application;
[0026] Figure 3 An exploded schematic diagram of a manual adjustment mechanism for an actuator disclosed in the present application is exemplarily shown;
[0027] Figure 4 A schematic structural diagram of a manual adjustment mechanism for an actuator disclosed in the present application is exemplarily shown; and
[0028] Figure 5 A partial structural schematic diagram of the manual adjustment mechanism for the actuator disclosed in the present application assembled with the upper housing is exemplarily shown. DETAILED DESCRIPTION
[0029] To make the above-mentioned purposes, features, and advantages of the present application more clearly understood, the following detailed description of specific embodiments of the present application is provided in conjunction with the accompanying drawings. First, it should be noted that directional terms such as "up," "down," "left," "right," "front," "rear," "inside," "outside," "top," and "bottom" mentioned or potentially mentioned in this specification are defined relative to the structures shown in the accompanying drawings. These are relative concepts and may vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.
[0030] like Figure 1As shown, a known manual adjustment mechanism 10 for an actuator incorporates a manual gear 11 and a gear shaft in an integrated form. The manual gear 11 is secured to both an upper housing 12 and a lower housing 13 via its own gear shaft. Furthermore, the upper and lower housings 12 and 13 require positioning and alignment of the manual gear 11. This places high demands on the alignment of the upper and lower housings 12 and 13, increasing the difficulty and cost of manufacturing the upper and lower housings 12 and 13. Furthermore, when the manual gear 11 and gear shaft are integrated, the gear portion requires heat treatment, which can easily cause deformation of the gear shaft during heat treatment. However, gear shafts require high precision, and if thermal deformation cannot be eliminated, the gear shaft portion must undergo post-heat processing to eliminate the deformation. Therefore, post-heat processing significantly increases costs. Furthermore, while gear shaft material requirements are generally high, the material requirements for the gear itself are relatively low. Integrating the manual gear and gear shaft into an integrated form also results in increased material costs. Finally, the manual gear 11 is connected to the manual structure 14 through the connection port on the upper portion of the manual gear 11 to achieve the manual adjustment function.
[0031] Figure 2 1 shows a schematic structural diagram of a manual adjustment mechanism for an actuator disclosed in this application. Figure 3 and Figure 4 As clearly shown in the figure, the actuator includes a lower housing 100 and an upper housing 200 fixed to the lower housing 100 by bolts or other means. The manual adjustment mechanism 300 comprises a manual structure 310, a gear shaft 320, a manual gear 330, and a connecting member 340. The manual structure 310 is rotatably fixed to the upper housing 200. The gear shaft 320 is fixed to the lower housing 100, for example, by crimping, and does not contact the upper housing 200. The manual gear 330 is rotatably mounted on the gear shaft 320, for example, by means of a sleeve 350. The connecting member 340 has a first end 341 and a second end 342. The first end 341 of the connecting member 340 is capable of rotating synchronously with the manual structure 310, while the second end 342 of the connecting member 340 is capable of rotating synchronously with the manual gear 330. Therefore, the manual structure 310 can be connected to the manual gear 330 via the connecting member 340. In other words, the manual gear 330 can rotate together with the manual structure 310. When the operator manually rotates the manual structure 310 using a wrench, the manual gear 330 can also rotate synchronously, thereby achieving a manual adjustment function.
[0032] It should be noted that the manual adjustment mechanism for the actuator disclosed in this application utilizes a separate design with a manual gear and gear shaft. This requires only the lower housing and gear shaft to be fixed, while the upper housing serves only as a support and does not require any positioning of the manual adjustment mechanism. This reduces the alignment requirements between the lower and upper housings, further reducing manufacturing costs. Furthermore, the separate design of the manual gear and gear shaft eliminates heat treatment deformation associated with manual gear heat treatment and reduces post-heat treatment processing steps, further reducing production costs.
[0033] Also refer to Figures 2 to 4 , the manual gear 330 can adopt a tower gear structure and be provided with external teeth. Specifically, the manual gear 330 may include a large gear 331 and a small gear 332 arranged coaxially, the large gear 331 and the small gear 332 are both external teeth and the large gear 331 is fixed to the outside of the small gear 332 by press-fitting. The second end 342 of the connecting member 340 is provided with internal teeth, and the internal teeth are fixedly connected to the small gear 332 of the manual gear 330 in an engaged manner. As another alternative, the second end 342 of the connecting member 340 can also be fixedly connected to the small gear 332 of the manual gear 330 by means of clamping, welding or bolting. In addition, the large gear 331 is engaged with the next-stage gear 360 to transmit power to the screw of the actuator, such as Figure 5 shown.
[0034] In combination with the above embodiment, in other optional embodiments, one end of the manual structure 310 has an opening 311. The inner contour of the opening 311 can be adapted to the outer contour of the first end 341 of the connecting member 340, thereby preventing the two from rotating relative to each other. Furthermore, the cross-sectional shape of the first end 341 of the connecting member 340 can be designed to be triangular, quadrilateral, pentagonal, hexagonal, or other shapes.
[0035] Continue to refer Figures 2 to 4 The number of the shaft sleeves 350 is two, and the two shaft sleeves 350 are of the same size and are engaged with the center hole of the manual gear 330. Of course, those skilled in the art will readily appreciate that the number of the shaft sleeves 350 is not limited to two, and may be one, three, four, or more. Furthermore, the shaft sleeves 350 may be replaced by bearings or other similar structures.
[0036] Because the manual gear and gear shaft are designed as a split unit, the manual gear 330 can be made of gear steel, while the gear shaft 320 only needs to be made of wear-resistant material, thereby reducing production costs. For another example, the upper housing 200 and / or the connector 340 can be made of materials such as injection molding. For another example, the lower housing 100 can be made of materials such as aluminum casting.
[0037] The present application also provides an actuator equipped with the aforementioned manual adjustment mechanism 300. When the actuator is powered off, the actuator motor cannot drive the gear train. In this case, the operator rotates the manual mechanism 310 to drive the manual gear 330, transmitting power to the actuator's lead screw. The upward and downward movement of the lead screw opens and closes a valve (not shown).
[0038] In addition, the present application also provides a linear valve, which is equipped with the above-mentioned actuator. For example, the linear valve can be a regulating valve commonly used in air-conditioning systems.
[0039] To sum up, the manual adjustment mechanism for the actuator of the present application has a simple structure and is easy to operate. It can not only reduce the alignment requirements of the upper shell and the lower shell, but also reduce the subsequent processing steps of the gear shaft, effectively reduce costs, and achieve the purpose of manual adjustment at the same time.
[0040] Several specific embodiments have been listed above to illustrate in detail the manual adjustment mechanism for an actuator, an actuator equipped with the manual adjustment mechanism, and a linear valve equipped with the actuator. These examples are intended solely to illustrate the principles and implementation methods of the present application and are not intended to limit the present application. Persons skilled in the art may make various modifications and improvements without departing from the spirit and scope of the present application. Therefore, all equivalent technical solutions are intended to fall within the scope of the present application and are defined by the claims of the present application.
Claims
1. A manual adjustment mechanism for an actuator, the actuator comprising a lower housing (100) and an upper housing (200) fixed to the lower housing (100), characterized in that: The manual adjustment mechanism (300) comprises: a manual structure (310), the manual structure (310) being rotatably fixed to the upper housing (200); a gear shaft (320), wherein the gear shaft (320) is fixed on the lower housing (100); a manual gear (330), the manual gear (330) being rotatably mounted on the gear shaft (320); and A connecting member (340) having a first end (341) and a second end (342); the first end (341) of the connecting member (340) is capable of rotating synchronously with the manual structure (310); and the second end (342) of the connecting member (340) is capable of rotating synchronously with the manual gear (330).
2. The manual adjustment mechanism for an actuator according to claim 1, characterized in that: The manual gear (330) is provided with external teeth, and the second end (342) of the connecting member (340) is provided with internal teeth, and the internal teeth are fixedly connected to the external teeth of the manual gear (330) in a meshing manner; or The second end (342) of the connecting member (340) is fixedly connected to the manual gear (330) by means of clamping, welding or bolt connection.
3. The manual adjustment mechanism for an actuator according to claim 2, characterized in that: One end of the manual structure (310) has an opening (311), and the inner contour of the opening (311) is adapted to the outer contour of the first end (341) of the connecting member (340).
4. The manual adjustment mechanism for an actuator according to claim 3, characterized in that: The cross-sectional shape of the first end (341) of the connecting member (340) is a triangle, a quadrilateral, a pentagon or a hexagon.
5. The manual adjustment mechanism for an actuator according to any one of claims 1 to 3, characterized in that: The manual gear (330) is sleeved on the gear shaft (320) via a shaft sleeve (350) or a bearing.
6. The manual adjustment mechanism for an actuator according to claim 5, characterized in that: The number of the shaft sleeves (350) or bearings is two, and the two shaft sleeves (350) or bearings are of the same size and are clamped on the center hole of the manual gear (330).
7. The manual adjustment mechanism for an actuator according to any one of claims 1 to 3, characterized in that: The upper housing (200) is formed of an injection molded part; and / or The lower housing (100) is made of aluminum casting; and / or The connecting piece (340) is made of an injection molded piece.
8. The manual adjustment mechanism for an actuator according to any one of claims 1 to 3, characterized in that: The gear shaft (320) is fixed to the lower housing (100) by means of crimping; and / or The upper shell (200) is fixed to the lower shell (100) by means of bolt connection.
9. An actuator, characterized in that: The actuator is provided with a manual adjustment mechanism (300) according to any one of claims 1-8.
10. A linear valve, characterized in that: The linear valve is provided with the actuator according to claim 9 .