Buffer locking structure for air valve actuator

Abstract

The utility model discloses a buffer locking structure for an air valve actuator, which comprises a first panel, a second panel and an actuator, a gear shaft is arranged between the first panel and the second panel, a gear is sleeved on the gear shaft, and the gear is connected with the actuator through the gear shaft; a locking structure for buffering and stopping rotation of the gear is rotationally arranged between the first panel and the second panel; the locking structure rotates to abut against the gear and rebounds repeatedly, and the locking structure finally abuts against the limiting and locking gear. The gear locking device is reasonable in structural design, the lock rod is rotated to drive the torsion spring to rotate, one end of the torsion spring repeatedly touches the gear and rebounds, the gear is decelerated, finally, the end of the torsion spring is clamped on the gear, the gear completely stops rotating, the gear locking device is simple, easy to operate and quite effective, and the loss rate of the gear is reduced.

Description

Technical Field

[0001] The utility model relates to the field of air valves, in particular to a buffer locking structure for air valve actuators. Background Art

[0002] Air valves are indispensable central air-conditioning terminal accessories in ventilation, air conditioning and air purification projects of industrial plants and civil buildings. They are generally used in air-conditioning and ventilation system pipes to adjust the air volume of branch pipes, and can also be used for mixing and adjusting fresh air and return air.

[0003] Actuators are an essential component of automatic control systems. They receive control signals from the controller and change the volume of the controlled medium, thereby maintaining the controlled variable at the desired value or within a specified range. Damper actuators primarily use a micromotor to drive a gear reduction mechanism, which then rotates the output gear, generating a specific speed and torque to drive the rocker arm.

[0004] During the operation of an existing actuator, if you want to stop the actuator at a predetermined angle, you need to stop the gear connected to the actuator. However, since the gear rotates at high speed during operation, an instantaneous stop will cause the gear to deform or even break, resulting in failure to work normally. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a buffer locking structure for a damper actuator in view of the current status of the prior art.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a buffer locking structure for a damper actuator, comprising a first panel, a second panel and an actuator, a gear shaft is provided between the first panel and the second panel, a gear is sleeved on the gear shaft, and the gear is connected to the actuator through the gear shaft; a locking structure for stopping the rotation of the gear buffer is provided between the first panel and the second panel; the locking structure rotates to contact the gear and rebounds repeatedly, and the locking structure finally contacts the limit locking gear.

[0007] Preferably, the locking structure includes a locking rod rotatably arranged between the first panel and the second panel, with both ends of the locking rod movably plugged into the first panel and the second panel respectively; a torsion spring is sleeved on the locking rod for buffering the gear to stop rotation.

[0008] Preferably, an integrally formed rotating piece is extended below the locking rod, and a protruding column for sleeve-engaging a torsion spring is provided on the rotating piece.

[0009] Preferably, a first limiting column for limiting is extended from the inner side of the second panel, and a plurality of second limiting columns for limiting are evenly arranged on the gear; one end of the torsion spring abuts against and limits the side of the first limiting column away from the second limiting column, and the other end of the torsion spring abuts against and cooperates with the second limiting column.

[0010] Preferably, a third limiting column for limiting the rotation of the rotating piece is provided between the first panel and the second panel.

[0011] Preferably, both ends of the gear shaft and both ends of the third limiting column are plugged into the first panel and the second panel respectively.

[0012] Compared with the prior art, the advantages of the present invention are: by rotating the lock rod, the torsion spring is driven to rotate, so that one end of the torsion spring repeatedly touches the gear and rebounds, thereby slowing down the gear, and finally the end of the torsion spring is stuck on the gear, so that the gear completely stops rotating. It is simple and easy to operate, and is very effective, reducing the loss rate of the gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the exploded structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the exploded structure of the utility model;

[0016] Figure 4 It is a structural diagram of the initial state of the utility model;

[0017] Figure 5 It is a structural diagram of the buffering process of the utility model;

[0018] Figure 6 It is a structural schematic diagram of the gear recovery rotation of the utility model.

[0019] Figure numerals: 1. first panel; 2. second panel; 3. gear shaft; 4. gear; 5. locking rod; 6. torsion spring; 7. rotating plate; 8. raised column; 9. first limiting column; 10. second limiting column; 11. third limiting column. DETAILED DESCRIPTION

[0020] The following diagrams illustrate various embodiments of the present invention. For clarity, many practical details will be included in the following description. However, it should be understood that these practical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not essential. Furthermore, to simplify the drawings, some commonly used structures and components are depicted in simplified schematic form.

[0021] It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back... are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0022] Moreover, some of the above-mentioned terms may be used to express other meanings in addition to indicating orientation or positional relationships. For example, the term "on" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For ordinary technicians in this field, the specific meanings of these terms in this utility model can be understood according to the specific circumstances.

[0023] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal connections between two devices, elements, or components. The connection methods discussed herein are prior art and are common knowledge to those skilled in the art without modification. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0024] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0025] like Figures 1 to 6 As shown, the utility model provides a buffer locking structure for a damper actuator, comprising a first panel 1, a second panel 2 and an actuator; a gear shaft 3 is provided between the first panel 1 and the second panel 2, a gear 4 is sleeved on the gear shaft 3, and the gear 4 is connected to the actuator through the gear shaft 3; specifically, a locking structure for buffering and stopping the rotation of the gear 4 is provided between the first panel 1 and the second panel 2; the locking structure rotates to contact the gear 4 and repeatedly rebounds, and the locking structure finally contacts the limit locking gear 4.

[0026] The locking structure includes a locking rod 5 rotatably arranged between the first panel 1 and the second panel 2, and the two ends of the locking rod 5 are movably inserted into the first panel 1 and the second panel 2 respectively; specifically, the locking rod 5 is sleeved with a torsion spring 6 for buffering and stopping the rotation of the gear 4.

[0027] An integrally formed rotating piece 7 is extended from the lower portion of the locking rod 5 , and a protruding column 8 for sleeve-engaging the torsion spring 6 is provided on the rotating piece 7 .

[0028] A first limiting column 9 for limiting is extended from the inner side of the second panel 2, and a number of second limiting columns 10 for limiting are evenly provided on the gear 4; specifically, one end of the torsion spring 6 is in contact with the side of the first limiting column 9 away from the second limiting column 10 for limiting, and the other end of the torsion spring 6 is in contact with the second limiting column 10.

[0029] A third limiting post 11 for limiting the rotation of the rotating piece 7 is provided between the first panel 1 and the second panel 2 .

[0030] The two ends of the gear shaft 3 and the two ends of the third limiting column 11 are respectively inserted into the first panel 1 and the second panel 2.

[0031] The working principle of this utility model is as follows: Figure 4 As shown, in the initial state, during the operation of the actuator, the gear 4 is in a clockwise high-speed rotation state, and the locking structure is arranged on the left side of the gear 4;

[0032] like Figure 5 As shown, the lock rod 5 is rotated to rotate the rotating piece 7 in the direction close to the gear 4. The left end of the torsion spring 6 abuts against the surface of the first limiting post 9 for a limit position. The rotating piece 7 drives the right end of the torsion spring 6 to rotate in the direction close to the gear 4 until the right end of the torsion spring 6 abuts against the second limiting post 10 on the gear 4 for a limit position, and the rotating piece 7 abuts against the third limiting post 11 for a limit position. The right end of the torsion spring 6 applies a buffering force to the gear 4 in the opposite direction of its rotation. However, since the gear 4 is rotating at a high speed, the buffering force cannot stop the gear 4 immediately. Therefore, under the action of the gear 4, the right end of the torsion spring 6 and the rotating piece 7 rebound to their original positions.

[0033] The locking rod 5 is repeatedly toggled, and the above process is repeated. Through repeated rebound, the gear 4 gradually slows down its rotation speed under the action of the superposition of the buffer force until it stops completely. The right end of the torsion spring 6 remains in contact with the second limit post 10 and does not rebound. At this time, the gear 4 is locked by the right end of the torsion spring 6.

[0034] like Figure 6As shown, the locking rod 5 is rotated in the opposite direction to rotate the rotating plate 7 away from the gear 4. The rotation of the rotating plate 7 drives the right end of the torsion spring 6 locked on the gear 4 to disengage from the second limiting column 10, and the locking rod 5 and the torsion spring 6 return to the initial state, the gear 4 is unlocked and starts to rotate again.

[0035] The locking rod 5 can be rotated manually through a transmission structure, or can be rotated by other driving components such as a motor.

[0036] The rotation direction of the gear 4 and the arrangement position of the locking structure relative to the gear 4, as well as the rotation direction of the locking rod 5, all depend on the specific situation, but the working principle is to perform buffer locking and re-operation rotation of the gear 4 as described above.

[0037] The advantages of the present invention are as follows: by rotating the lock rod 5, the torsion spring 6 is driven to rotate, so that one end of the torsion spring 6 repeatedly touches the gear 4 and rebounds, thereby slowing down the gear 4. Finally, the end of the torsion spring 6 is stuck on the gear 4, so that the gear 4 completely stops rotating. The utility model is simple and easy to operate, and is very effective, thereby reducing the loss rate of the gear 4.

[0038] In the description of this specification, reference is made to the terms "one embodiment", "some embodiments", "examples", "specific examples", etc.

[0039] Descriptions such as "example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in an appropriate manner. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without contradiction.

[0040] The standard parts used in this utility model can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as bolts, rivets, welding, and bonding in the existing technology, which will not be described in detail here.

[0041] The above content is only a preferred embodiment of the present invention. For ordinary technicians in this field, various changes and variations can be made in the specific implementation methods and application scope based on the concept of the present invention. The content of this specification should not be understood as a limitation of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A buffer locking structure for a damper actuator, comprising a first panel, a second panel, and an actuator, characterized in that: A gear shaft is provided between the first panel and the second panel, and a gear is sleeved on the gear shaft, and the gear is connected to the actuator through the gear shaft; a locking structure is provided between the first panel and the second panel for buffering and stopping the rotation of the gear; the locking structure rotates to contact the gear and rebounds repeatedly, and the locking structure finally contacts the limit locking gear.

2. The buffer locking structure for a damper actuator according to claim 1, characterized in that: The locking structure includes a locking rod rotatably arranged between the first panel and the second panel, with both ends of the locking rod movably plugged into the first panel and the second panel respectively; a torsion spring is sleeved on the locking rod for buffering the gear to stop rotation.

3. The buffer locking structure for a damper actuator according to claim 2, characterized in that: An integrally formed rotating piece is extended below the locking rod, and a raised column for sleeve-connecting a torsion spring is provided on the rotating piece.

4. The buffer locking structure for a damper actuator according to claim 2, characterized in that: A first limiting post for limiting is extended from the inner side of the second panel, and a number of second limiting posts for limiting are evenly arranged on the gear; one end of the torsion spring contacts and limits the side of the first limiting post away from the second limiting post, and the other end of the torsion spring contacts and cooperates with the second limiting post.

5. The buffer locking structure for a damper actuator according to claim 3, characterized in that: A third limiting column for limiting the rotation of the rotating piece is provided between the first panel and the second panel.

6. The buffer locking structure for a damper actuator according to claim 5, characterized in that: The two ends of the gear shaft and the two ends of the third limiting column are respectively plugged into the first panel and the second panel.

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