Adjustable pull rod structure

Abstract

The utility model relates to the field of ventilation equipment, and discloses an adjustable pull rod structure which comprises an operation shell, the inner wall of the operation shell is fixedly connected with a fixing plate, the interior of the fixing plate is fixedly connected with a pull rod body, and the inner wall of the left side of the pull rod body is in threaded connection with a first connecting strip. A right-hand thread is arranged on the outer wall of the right side of the first connecting strip, a second connecting strip is connected to the inner wall of the right side of the pull rod body in a threaded mode, a left-hand thread is arranged on the left side of the second connecting strip, a first perforated plate is fixedly connected to the outer wall of the left side of the first connecting strip, and a first locking nut is arranged on the outer wall of the first connecting strip. According to the utility model, the rotating operation shell drives the pull rod main body to rotate through the fixing plate, the pull rod main body rotates to enable the connecting strip I and the connecting strip II to slide outwards or towards the middle, and then the connecting strip I and the connecting strip II can be fixed through the locking nut I and the locking nut II, so that the length of the pull rod can be adjusted at any time; the structure is simple, operation is convenient, stable and reliable.

Description

Technical Field

[0001] The utility model relates to the field of ventilation equipment, in particular to an adjustable pull rod structure. Background Art

[0002] The blade adjustment mechanism of the existing fan is to adjust the blade angle by rotating the adjustment hand wheel outside the fan and pulling the adjustment disk to move axially.

[0003] A pull rod is needed to pull the adjusting disk. Currently, the pull rods used in the industry are made of long plates of fixed length. Such pull rods are very inconvenient to install, and the superposition of processing errors and cumulative tolerances will affect the adjustment of the blade angle. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides an adjustable pull rod structure, which aims to improve the problem that the pull rod installation is very inconvenient and affects the adjustment of the blade angle.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] An adjustable pull rod structure includes an operating shell, the inner wall of the operating shell is fixedly connected to a fixing plate, the interior of the fixing plate is fixedly connected to a pull rod body, the left inner wall of the pull rod body is threadedly connected to a connecting strip 1, the right outer wall of the connecting strip 1 is provided with a right-handed thread, the right inner wall of the pull rod body is threadedly connected to a connecting strip 2, the left side of the connecting strip 2 is provided with a left-handed thread, the left outer wall of the connecting strip 1 is fixedly connected to an open hole plate 1, the outer wall of the connecting strip 1 is provided with a locking nut 1, the right outer wall of the connecting strip 2 is fixedly connected to an open hole plate 2, and the outer wall of the connecting strip 2 is provided with a locking nut 2.

[0007] Preferably, a pin shaft 1 is provided inside the first perforated plate, and a blade adjuster is provided on the outer wall of the first pin shaft.

[0008] Preferably, a second pin is provided inside the second perforated plate, and a blade adjustment disk is provided on the outer wall of the second pin.

[0009] Preferably, the interior of the operating shell is slidably connected to an inner shell, and the inner shell is located outside the pull rod body and the second locking nut.

[0010] Preferably, a baffle is fixedly connected to the outer wall of the inner shell.

[0011] Preferably, the outer wall of the baffle is fixedly connected to a spring, and the outer wall of the spring is fixedly connected to the outer wall of the fixed plate.

[0012] The utility model has the following beneficial effects:

[0013] 1. In the utility model, the rotating operating shell drives the pull rod body to rotate through the fixed plate. The rotation of the pull rod body will cause the connecting strips 1 and 2 to slide outward or toward the middle, and then the connecting strips 1 and 2 can be fixed by the locking nuts 1 and 2, so that the length of the pull rod can be adjusted at any time. The structure is simple, the operation is convenient, and the operation is stable and reliable.

[0014] 2. In the present invention, when the pull rod needs to be adjusted, the baffle is squeezed from both sides toward the middle to expose the threaded connection. After the adjustment is completed, the baffle spring rebounds and the inner shell extends out to cover the connection to protect it and prevent contamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional diagram of an adjustable pull rod structure proposed by the utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the internal structure of an operating housing with an adjustable pull rod structure proposed in the present invention;

[0017] Figure 3 This is a schematic cross-sectional view of the internal structure of a pull rod body of an adjustable pull rod structure proposed by the present invention.

[0018] Legend:

[0019] 1. Operating housing; 2. Fixing plate; 3. Pull rod body; 4. Connecting strip 1; 5. Connecting strip 2; 6. Perforated plate 1; 7. Locking nut 1; 8. Perforated plate 2; 9. Locking nut 2; 10. Pin 1; 11. Blade adjuster; 12. Pin 2; 13. Blade adjustment disk; 14. Inner housing; 15. Baffle; 16. Spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Reference Figure 1-Figure 3The utility model provides an embodiment: an adjustable pull rod structure, including an operating shell 1, the inner wall of the operating shell 1 is fixedly connected to a fixing plate 2, the interior of the fixing plate 2 is fixedly connected to a pull rod body 3, the left inner wall of the pull rod body 3 is threadedly connected to a connecting strip 1 4, the right outer wall of the connecting strip 1 4 is provided with a right-handed thread, the right inner wall of the pull rod body 3 is threadedly connected to a connecting strip 2 5, the left side of the connecting strip 2 5 is provided with a left-handed thread, the left outer wall of the connecting strip 1 4 is fixedly connected to an open plate 1 6, the outer wall of the connecting strip 1 4 is provided with a locking nut 1 7, the right outer wall of the connecting strip 2 5 is fixedly connected to an open plate 2 8, and the outer wall of the connecting strip 2 5 is provided with a locking nut 2 9.

[0022] Specifically, the operating shell 1 is on the far left, the connecting strip 1 4 is on the left side of the operating shell 1, and the connecting strip 2 5 is on the right side of the operating shell 1. The thread patterns of the connecting strip 1 4 and the connecting strip 2 5 are opposite; the perforated plate 1 6 and the perforated plate 2 8 are provided with holes for connection. Rotating the operating shell 1 drives the pull rod body 3 to rotate through the fixed plate 2. The rotation of the pull rod body 3 will cause the connecting strip 1 4 and the connecting strip 2 5 to slide outward or toward the middle, thereby changing the length of the pull rod. The connecting strip 1 4 and the connecting strip 2 5 can then be fixed by the locking nut 1 7 and the locking nut 2 9 to prevent the pull rod from loosening during use.

[0023] Reference Figure 1 A pin shaft 10 is provided inside the opening plate 1 6 , and a blade adjuster 11 is provided on the outer wall of the pin shaft 10 ; a pin shaft 2 12 is provided inside the opening plate 2 8 , and a blade adjusting disk 13 is provided on the outer wall of the pin shaft 2 12 .

[0024] Specifically, the perforated plate 1 6 is fixedly connected to the blade adjuster 11 via a pin 10 , and the perforated plate 2 8 is fixed to the blade adjustment disk 13 via a pin 2 12 .

[0025] Reference Figure 1 and Figure 2 The inner shell 14 is slidably connected to the inside of the operating shell 1, and the inner shell 14 is located on the outside of the pull rod body 3 and the locking nut 9; the outer wall of the inner shell 14 is fixedly connected to the baffle 15; the outer wall of the baffle 15 is fixedly connected to the spring 16, and the outer wall of the spring 16 is fixedly connected to the outer wall of the fixed plate 2.

[0026] Specifically, a spring 16 is provided inside the operating shell 1, and the spring 16 connects the fixed plate 2 and the baffle 15. The baffle 15 is provided with a hole, which can allow the locking nut 1 7 and the locking nut 2 9 to slide into the operating shell 1. When the length of the pull rod needs to be adjusted, the baffle 15 is squeezed from both sides to the middle to expose the threaded connection. After the adjustment is completed, the spring 16 rebounds and the inner shell 14 slides out from the inside of the operating shell 1, covering the connection for protection.

[0027] Working principle: When the pull rod structure is used, prepare to install the pull rod, first squeeze the baffle 15 to expose the connection between the pull rod body 3 and the connecting strip 1 4 and the connecting strip 2 5, first put the locking nut 1 7 on the root of the threaded end of the connecting strip 1 4, then put the locking nut 2 9 on the root of the threaded end of the connecting strip 2 5, connect the threaded ends of the connecting strip 1 4 and the connecting strip 2 5 to the two ends of the pull rod body 3 respectively, keep the connecting strip 1 4 and the connecting strip 2 5 level, rotate the pull rod body 3 by adjusting the operating shell 1, so that the threaded ends of the connecting strip 1 4 and the connecting strip 2 5 extend into the interior of the pull rod body 3, when the total length of the pull rod reaches the required length, the blade adjuster 11 and the blade adjuster The distance between the disks 13 is fixed. Stop rotating the pull rod body 3, rotate the locking nut 1 7 and the locking nut 2 9 to press against the pull rod body 3 from both sides, lock the connecting strip 1 4 and the connecting strip 2 5, and then loosen the baffle 15. The spring 16 rebounds and can cover the connection. When adjustment is needed, loosen the locking nut 1 7 and the locking nut 2 9, and use the operating shell 1 to rotate the fixed plate 2 to adjust the length of the connecting strip 1 4 and the connecting strip 2 5 extending into the interior of the pull rod body 3, thereby adjusting the total length of the pull rod. Adjust it to the required length, and tighten the locking nut 1 7 and the locking nut 2 9 again. The pull rod structure can adjust the length and is more applicable. The connection can also be protected by the inner shell 14.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An adjustable pull rod structure, comprising an operating housing (1), characterized in that: The inner wall of the operating shell (1) is fixedly connected to a fixing plate (2), the interior of the fixing plate (2) is fixedly connected to a pull rod body (3), the left inner wall of the pull rod body (3) is threadedly connected to a connecting strip 1 (4), the right outer wall of the connecting strip 1 (4) is provided with a right-handed thread, the right inner wall of the pull rod body (3) is threadedly connected to a connecting strip 2 (5), the left side of the connecting strip 2 (5) is provided with a left-handed thread, the left outer wall of the connecting strip 1 (4) is fixedly connected to an opening plate 1 (6), the outer wall of the connecting strip 1 (4) is provided with a locking nut 1 (7), the right outer wall of the connecting strip 2 (5) is fixedly connected to an opening plate 2 (8), and the outer wall of the connecting strip 2 (5) is provided with a locking nut 2 (9).

2. The adjustable pull rod structure according to claim 1, characterized in that: A pin shaft 1 (10) is provided inside the perforated plate 1 (6), and a blade adjuster (11) is provided on the outer wall of the pin shaft 1 (10).

3. The adjustable pull rod structure according to claim 1, characterized in that: A second pin shaft (12) is provided inside the second opening plate (8), and a blade adjustment disk (13) is provided on the outer wall of the second pin shaft (12).

4. The adjustable pull rod structure according to claim 1, characterized in that: The operating housing (1) is slidably connected to an inner housing (14), and the inner housing (14) is located outside the pull rod body (3) and the second locking nut (9).

5. The adjustable pull rod structure according to claim 4, characterized in that: A baffle (15) is fixedly connected to the outer wall of the inner shell (14).

6. The adjustable pull rod structure according to claim 5, characterized in that: The outer wall of the baffle (15) is fixedly connected to a spring (16), and the outer wall of the spring (16) is fixedly connected to the outer wall of the fixed plate (2).

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