Knob type mechanical self-locking mechanism

Abstract

The utility model discloses a knob type mechanical self-locking mechanism which comprises a fixing rod, a sliding rod is connected to the inner wall of the fixing rod in a sliding mode, positioning holes are formed in the outer wall of the sliding rod in a linear array mode, the appearance of the positioning holes is round, and a self-locking mechanism is fixedly connected to the top of the fixing rod. The outer wall of the self-locking mechanism is fixedly connected with a limiting mechanism, and the self-locking mechanism comprises a fixing ring. According to the rotary knob type mechanical self-locking mechanism, the bottom of the rotary knob abuts against and makes contact with the top of the sliding buckle by rotating the rotary knob, due to the particularity of the appearance of the bottom of the rotary knob and the appearance of the top of the sliding buckle, when force generated when the bottom of the rotary knob makes contact with the top of the sliding buckle is enough, the sliding buckle can move towards the bottom, and the sliding buckle drives the positioning block to move synchronously; and the outer wall of the positioning block is inserted into the inner wall of the positioning hole, so that self-locking is completed, the sliding rod cannot continuously slide on the inner wall of the fixed rod, and the self-locking effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of knob-type self-locking technology, and in particular to a knob-type mechanical self-locking mechanism. Background Technology

[0002] In mechanical manufacturing, some extension plates or extension tubes are needed. When extending or retracting extension plates or extension tubes, it is usually necessary to restrict them after they have extended or retracted so that they can no longer extend or retract. Therefore, a self-locking mechanism is needed to lock and restrict them.

[0003] In existing technologies, when self-locking the extended or retracted extension tube, the extension tube is usually pressed against it, and the movement of the extension tube is restricted by friction. This locking method not only damages the extension tube, but also damages the locking device itself, reducing the practicality of the device. At the same time, the self-locking stability of the existing locking device is poor, and it is easy to loosen, which also reduces the practicality of the device. Utility Model Content

[0004] The purpose of this invention is to provide a knob-type mechanical self-locking mechanism to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a knob-type mechanical self-locking mechanism, including a fixed rod, a sliding rod slidably connected to the inner wall of the fixed rod, positioning holes linearly arrayed on the outer wall of the sliding rod, a self-locking mechanism fixedly connected to one end of the fixed rod, a limiting mechanism fixedly connected to the outer wall of the self-locking mechanism, the self-locking mechanism including a fixed ring, the bottom of the fixed ring being fixedly connected to the fixed rod, the bottom of the fixed ring being composed of multiple grooves and protrusions forming an annular wave shape, and the limiting mechanism including a connecting block, the connecting block being fixedly connected to the outer wall of the fixed ring.

[0006] Compared with the prior art, the significant advantages of this utility model are:

[0007] (1) This utility model provides a knob-type mechanical self-locking mechanism. By rotating the knob, the bottom of the knob and the top of the sliding buckle are brought into close contact. Due to the special shape of the bottom of the knob and the top of the sliding buckle, when the force generated when the bottom of the knob and the top of the sliding buckle are in contact is sufficient, the sliding buckle will move downward. The sliding buckle drives the positioning block to move synchronously, so that the outer wall of the positioning block is inserted into the inner wall of the positioning hole, thereby completing the self-locking and preventing the sliding rod from continuing to slide on the inner wall of the fixed rod, thus achieving the self-locking effect.

[0008] (2) This utility model provides a knob-type mechanical self-locking mechanism. When the circular frame rotates, the inner wall of the circular frame applies force to the outer wall of the limiting rod. Due to the special shape of the limiting rod, the limiting rod slides towards the inner and outer walls of the circular frame, driving the pull plate to move synchronously and causing the second spring to extend. After the circular frame rotates a certain angle, under the action of the elastic force of the second spring, the outer wall of the limiting rod is inserted into the inner wall of the circular frame again, thereby limiting the circular frame and generating resistance to the rotation. At this time, the rotation can be stopped, so that the circular frame cannot continue to rotate without the action of external force, which increases the stability of the device and achieves the effect of limiting. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of the main view of this utility model.

[0010] Figure 2 This is a cross-sectional view of the main structure of this utility model.

[0011] Figure 3 This is a schematic diagram of the self-locking mechanism of this utility model.

[0012] Figure 4 This is a schematic diagram of the limiting mechanism of this utility model.

[0013] Figure 5 This is a schematic diagram of the self-locking mechanism of this utility model in the locked state.

[0014] In the diagram: 1. Fixed rod; 11. Sliding rod; 12. Positioning hole; 2. Self-locking mechanism; 21. Fixed ring; 22. Knob; 23. Limiting ring; 24. Circular frame; 25. Rotating plate; 26. Spring 1; 27. Sliding buckle; 28. Guide block; 29. ​​Positioning block; 3. Limiting mechanism; 31. Connecting block; 32. Pull plate; 33. Limiting rod; 34. Spring 2. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0016] like Figures 1-5 As shown, a knob-type mechanical self-locking mechanism includes a fixed rod 1, a slide rod 11 slidably connected to the inner wall of the fixed rod 1, and positioning holes 12 arranged in a linear array on the outer wall of the slide rod 11. The positioning holes 12 are circular in shape. A self-locking mechanism 2 is fixedly connected to the top of the fixed rod 1, and a limiting mechanism 3 is fixedly connected to the outer wall of the self-locking mechanism 2. The self-locking mechanism 2 includes a fixed ring 21, the bottom end of which is fixedly connected to one end of the fixed rod 1. The top of the fixed ring 21 is composed of multiple grooves and protrusions forming an annular wave shape. The limiting mechanism 3 includes a connecting block 31, which is fixedly connected to the outer wall of the fixed ring 21.

[0017] The self-locking mechanism 2 can be used to position the slide bar 11. When positioning the slide bar 11, the self-locking mechanism 2 is limited by the limiting mechanism 3, making the locking of the self-locking mechanism 2 more stable.

[0018] like Figure 2 , Figure 3 As shown, a knob 22 is rotatably connected to the top of the fixed ring 21, and a limit ring 23 is fixedly connected to the outer wall of the knob 22. The outer wall of the limit ring 23 is slidably connected to the inner wall of the fixed ring 21.

[0019] By rotating the knob 22, the limiting ring 23 is driven to rotate synchronously on the inner wall of the fixed ring 21. The limiting ring 23 limits the knob 22, so that the knob 22 can only rotate and cannot move up and down.

[0020] like Figure 2 , Figure 3 and Figure 5 As shown, a circular frame 24 is fixedly connected to the top of the knob 22. The function of the circular frame 24 is to lock the knob 22 in conjunction with the connecting block 31. The inner wall of the circular frame 24 is slidably connected to the top of the fixing ring 21. A rotating plate 25 is rotatably connected to the inner cavity of the knob 22. A spring 26 is fixedly connected to one end of the rotating plate 25. A sliding buckle 27 is fixedly connected to the other end of the spring 26. The top of the sliding buckle 27 is composed of multiple grooves and protrusions forming an annular wave shape. The top of the sliding buckle 27 fits into the bottom of the knob 22. The outer wall of the sliding buckle 27 is slidably connected to the inner wall of the fixing rod 1. A positioning block 29 is fixedly connected to the bottom of the sliding buckle 27. The positioning block 29 is circular in shape, and the maximum diameter of the positioning block 29 is smaller than the maximum diameter of the positioning hole 12.

[0021] When knob 22 is rotated, the bottom of knob 22 comes into close contact with the top of slide buckle 27. Due to the special shape of the bottom of knob 22 and the top of slide buckle 27, when the force generated when the bottom of knob 22 contacts the top of slide buckle 27 is sufficient, slide buckle 27 will move downward. At the same time, slide buckle 27 drives spring 26 to extend. Slide buckle 27 drives positioning block 29 to move synchronously, so that the outer wall of positioning block 29 is inserted into the inner wall of positioning hole 12, thereby completing self-locking and preventing slide rod 11 from continuing to slide on the inner wall of fixed rod 1, thus achieving the self-locking effect.

[0022] like Figure 2 , Figure 3 and Figure 5 As shown, four guide blocks 28 are fixedly connected in a circular arrangement on the top outer periphery of the sliding buckle 27. The outer wall of the guide block 28 is slidably connected to the inner wall of the fixing ring 21. The guide blocks 28 are all located at the protrusions on the top of the sliding buckle 27.

[0023] When the sliding buckle 27 moves, it drives the guide block 28 to move synchronously, causing the guide block 28 to slide on the inner wall of the fixed ring 21. The guide block 28 limits and guides the sliding buckle 27, so that the sliding buckle 27 can only move horizontally and cannot rotate.

[0024] like Figure 2 , Figure 4 As shown, one end of the connecting block 31 is movably sleeved with a limiting rod 33, the outer wall of the limiting rod 33 is inserted into the inner wall of the circular frame 24, the other end of the limiting rod 33 is fixedly connected to a pull plate 32, the pull plate 32 is fixedly connected to a spring 34, the inner wall of the spring 34 is movably sleeved with the outer wall of the limiting rod 33, and one end of the spring 34 is fixedly connected to the outer wall of the connecting block 31.

[0025] When the circular frame 24 rotates, the inner wall of the circular frame 24 applies force to the outer wall of the limiting rod 33. Due to the special nature of the inclined structure of the limiting rod 33, the limiting rod 33 slides towards the outer wall of the circular frame 24, causing the pull plate 32 to move synchronously, and the second spring 34 to extend. After the circular frame 24 rotates a certain angle, under the action of the elastic force of the second spring 34, the outer wall of the limiting rod 33 is inserted into the inner wall of the circular frame 24 again, thereby limiting the circular frame 24 and generating resistance to the rotation. At this time, the rotation can be stopped, so that the circular frame 24 cannot continue to rotate without the action of external force, which increases the stability of the device and achieves the effect of limiting.

[0026] The working principle of this utility model is as follows: When extension or retraction is required, simply rotate knob 22 to make knob 22 drive the circular frame 24 to rotate synchronously. This causes the inner wall of the circular frame 24 to apply force to the outer wall of the limiting rod 33. Due to the special shape of the limiting rod 33, it slides towards the inner and outer walls of the circular frame 24, causing the pull plate 32 to move synchronously. This causes the spring 34 to extend. After the circular frame 24 rotates a certain angle, under the elastic force of the spring 34, the outer wall of the limiting rod 33 re-engages with the inner wall of the circular frame 24, thereby extending the circular frame 24. 4. Limiting the rotation and creating resistance simultaneously stops the rotation, preventing the circular frame 24 from rotating further without external force. This increases the stability of the device and achieves the limiting effect. Simultaneously, as the knob 22 rotates, it drives the limiting ring 23 to rotate synchronously on the inner wall of the fixed ring 21. The limiting ring 23 limits the knob 22, preventing it from moving up and down. At the same time, the bottom of the knob 22 is in close contact with the top of the sliding buckle 27. Due to the shape of the bottom of the knob 22 and the top of the sliding buckle 27... Due to its unique feature, when the bottom of the knob 22 contacts the top of the slide buckle 27, the force generated is sufficient to cause the slide buckle 27 to move downwards, driving the guide block 28 to move synchronously. This causes the guide block 28 to slide on the inner wall of the fixing ring 21, limiting and guiding the slide buckle 27 so that it can only move horizontally and cannot rotate. Simultaneously, the slide buckle 27 causes the spring 26 to extend, and the slide buckle 27 drives the positioning block 29 to move synchronously, causing the outer wall of the positioning block 29 to engage with the inner wall of the positioning hole 12, thus completing the self-locking mechanism and allowing the slide rod to... The slide bar 11 can no longer slide on the inner wall of the fixed rod 1, which has a self-locking effect and avoids the problem of deformation of the outer wall of the slide bar 11 due to excessive squeezing force. Subsequently, when it is necessary to retract, turn the knob 22 to drive the circular frame 24 to rotate synchronously, so that the part of the limit rod 33 and the circular frame 24 are replaced. At this time, under the action of the elastic force of the spring 26, the groove of the sliding buckle 27 and the protrusion of the knob 22 are engaged together, so that the outer wall of the positioning block 29 is no longer engaged with the inner wall of the positioning hole 12, thereby greatly improving the user experience.

[0027] The foregoing has shown and described the basic principles and main features of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A knob-type mechanical self-locking mechanism, comprising a fixed rod (1), characterized in that: The inner wall of the fixed rod (1) is slidably connected to a slide rod (11), and the outer wall of the slide rod (11) is provided with positioning holes (12) in a linear array. One end of the fixed rod (1) is fixedly connected to a self-locking mechanism (2), and the outer wall of the self-locking mechanism (2) is fixedly connected to a limiting mechanism (3). The self-locking mechanism (2) includes a fixed ring (21), the bottom of which is fixedly connected to the fixed rod (1). The bottom of the fixed ring (21) is composed of multiple grooves and protrusions forming an annular wave shape. The limiting mechanism (3) includes a connecting block (31), which is fixedly connected to the outer wall of the fixed ring (21).

2. The knob-type mechanical self-locking mechanism according to claim 1, characterized in that: A knob (22) is rotatably connected to the top of the fixed ring (21), and a limiting ring (23) is fixedly connected to the outer wall of the knob (22). The outer wall of the limiting ring (23) is slidably connected to the inner wall of the fixed ring (21).

3. The knob-type mechanical self-locking mechanism according to claim 2, characterized in that: A circular frame (24) is fixedly connected to the top of the knob (22). The inner wall of the circular frame (24) is slidably connected to the top of the fixing ring (21). A rotating plate (25) is rotatably connected to the inner cavity of the knob (22). A spring (26) is fixedly connected to the bottom of the rotating plate (25).

4. A knob-type mechanical self-locking mechanism according to claim 3, characterized in that: The bottom end of the spring (26) is fixedly connected to a sliding buckle (27). The top of the sliding buckle (27) is composed of multiple grooves and protrusions forming an annular wave shape. The top of the sliding buckle (27) is fitted into the bottom of the knob (22). The outer wall of the sliding buckle (27) is slidably connected to the inner wall of the fixing rod (1). The bottom of the sliding buckle (27) is fixedly connected to a positioning block (29).

5. A knob-type mechanical self-locking mechanism according to claim 4, characterized in that: The positioning hole (12) and the positioning block (29) are circular in shape, and the maximum diameter of the positioning block (29) is smaller than the maximum diameter of the positioning hole (12).

6. A knob-type mechanical self-locking mechanism according to claim 4, characterized in that: The top outer periphery of the sliding buckle (27) is fixedly connected with four guide blocks (28) arranged in a circle, and the outer wall of the guide block (28) is slidably connected to the inner wall of the fixing ring (21).

7. A knob-type mechanical self-locking mechanism according to claim 6, characterized in that: The guide blocks (28) are all located at the protrusions on the top of the slide buckle (27).

8. A knob-type mechanical self-locking mechanism according to claim 4, characterized in that: One end of the connecting block (31) is movably sleeved with a limiting rod (33), the outer wall of the limiting rod (33) is inserted into the inner wall of the circular frame (24), one end of the limiting rod (33) is fixedly connected with a pull plate (32), one end of the pull plate (32) is fixedly connected with a spring (34), the inner wall of the spring (34) is movably sleeved with the outer wall of the limiting rod (33), and one end of the spring (34) is fixedly connected to the outer wall of the connecting block (31).

9. A knob-type mechanical self-locking mechanism according to claim 8, characterized in that: The circular frame (24) has two or more holes corresponding to the limiting rod (33), which are symmetrically distributed.

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