CN216788910U - Locking knob and sleeve structure - Google Patents

Abstract

The embodiment of the application provides a locking knob and sleeve structure, wherein the locking knob includes hollow screw and pin, the pin passes along the axial hollow screw, the inside movable cavity that is provided with of hollow screw, pin week side is provided with the block portion, the block portion is located in the movable cavity, the pin has cup jointed the spring outward, the spring is located the block portion with between hollow screw's the tip. In the sliding process of the sleeve, the spring can drive the pin to automatically slide into the positioning hole of the inner tube, so that the locking process is simplified, and the operation is more convenient.

Description

Locking knob and sleeve structure

Technical Field

The utility model relates to a structure locking technology, in particular to a locking knob and a sleeve structure.

Background

At present, sleeve locking knobs on the market are similar to bolts, the inner tube is locked in holes through rotation, in the rotating process, the pins in the middle of the knobs can be screwed in the holes of the inner tube through continuous rotation attempts, the locking efficiency is low, and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a locking knob which can be conveniently locked.

It is another object of the present invention to provide a sleeve structure including the locking knob.

The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.

According to one aspect of the utility model, the locking knob comprises a hollow screw and a pin, wherein the pin penetrates through the hollow screw along the axial direction, a movable cavity is arranged inside the hollow screw, a blocking part is arranged on the peripheral side face of the pin, the blocking part is positioned in the movable cavity, a spring is sleeved outside the pin, and the spring is positioned between the blocking part and the end part of the hollow screw.

In one embodiment, the cannulated screw is connected with the fixed knob and the pin is connected with the movable knob.

In one embodiment, the hollow screw is fixedly connected with the fixing knob through injection molding and pre-embedding.

In one embodiment, the pin is fixedly connected with the movable knob through threads.

In one embodiment, the fixed knob is provided with a groove for accommodating the movable knob.

In one embodiment, a clamping piece is arranged in the groove, a limiting clamping groove is formed in the movable knob, and the movable knob can fall into the groove only when the clamping piece corresponds to the limiting clamping groove.

According to another aspect of the present invention, there is provided a casing structure, which includes an inner tube and an outer tube, the outer tube is sleeved outside the inner tube, a plurality of positioning holes are formed on a sidewall of the inner tube, the side wall of the outer tube is provided with the locking knob, and the outer tube is provided with a through hole for passing the pin.

In one embodiment, a nut is fixedly connected to the outer tube, and the cannulated screw is connected to the nut by means of threads on an outer surface of the cannulated screw.

In one embodiment, the nut is welded to the outer tube.

In an embodiment, the sleeve structure further includes a bushing wrapped around an end of the outer tube and extending toward the locking knob.

The embodiment of the utility model has the beneficial effects that: through setting up cannulated screw and pin to set up the spring between cannulated screw and pin, at the sleeve pipe slip in-process, the spring can drive the pin and slide in the locating hole of inner tube automatically, thereby has simplified the locking process.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

The above features and advantages of the present disclosure will be better understood upon reading the detailed description of embodiments thereof in conjunction with the following drawings. In the drawings, components are not necessarily drawn to scale, and components having similar relative characteristics or features may have the same or similar reference numerals.

FIG. 1 is a schematic perspective view of an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of an embodiment of the present application;

FIG. 3 is an enlarged partial view of the locking knob portion of FIG. 2;

FIG. 4 is a schematic view of the structure of the fixing knob;

FIG. 5 is a schematic view of the movable knob;

wherein: 1-inner tube; 11-a positioning hole; 2-an outer tube; 21-a through hole; 3-locking the knob; 31-cannulated screws; 31 a-a movable cavity; 31 b-end; 32-pins; 32 a-a barrier; 33-a spring; 34-fixed knob; 34 a-a groove; 34 b-a clip; 35-a movable knob; 35 a-a limit slot; 4-a nut; 5-lining.

Detailed Description

The utility model is described in detail below with reference to the figures and specific embodiments. It is noted that the aspects described below in connection with the figures and the specific embodiments are only exemplary and should not be construed as imposing any limitation on the scope of the present invention.

As shown in fig. 1 and 2, the present embodiment provides a sleeve structure that can be used in a seat height adjustment scenario. This sleeve pipe structure includes inner tube 1 and outer tube 2, and outer tube 2 cup joints outside inner tube 1, has seted up a plurality of locating holes 11 on the lateral wall of inner tube 1, is provided with locking knob 3 on the lateral wall of outer tube 2, has seted up through-hole 21 on outer tube 2.

The cross-sectional structure of the locking knob 3 is shown in fig. 3, and includes a hollow screw 31 and a pin 32. The pin 32 axially penetrates through the hollow screw 31, a movable cavity 31a is arranged inside the hollow screw 31, a blocking part 32a is arranged on the peripheral side face of the pin 32, the blocking part 32a is positioned in the movable cavity 31a, a spring 33 is sleeved outside the pin 32, and the spring 33 is positioned between the blocking part 32a and the end part 31b of the hollow screw 31.

Unlike the existing bolt locking method, the locking knob 3 provided in this embodiment drives the pin 32 through the spring 33. When the inner pipe 1 and the outer pipe 2 slide relatively, the pin 32 may press against the outer wall of the inner pipe 1, and when the inner pipe slides to the positioning hole 11, the spring 33 drives the pin 32 to fall into the positioning hole 11, so as to achieve locking. When unlocking is required, the pin 32 needs to be pulled out.

To facilitate grasping of the pin 32, the cannulated screw 31 may be attached to a fixed knob 34, and the pin 32 attached to a movable knob 35. The connection mode can be various, for example, the hollow screw 31 can be fixedly connected with the fixed knob 34 through injection molding and embedding, and the pin 32 can be connected with the movable knob 35 through screwing.

Further, in order to reduce the overall length of the locking knob 3 and prevent pinching, the fixing knob 34 may be designed in a bowl shape. As shown in fig. 4 and 5, the fixed knob 34 is provided with a recess 34a for receiving the movable knob 35. When the pin 32 is inserted into the positioning hole 11, the movable knob 35 also falls into the groove 34 a.

Preferably, a clamping piece 34b is further arranged in the groove 34a, and a limiting clamping groove 35a is arranged on the movable knob 35. Through the structure, only when the clamping piece 34b corresponds to the position of the limiting clamping groove 35a, the movable knob 35 can fall into the groove 34 a. Thus, after the movable knob 35 is pulled out, the hand can be loosened by only rotating the movable knob 35 without always grasping the movable knob 35.

The hollow screw 31 is fixedly connected with the outer tube 2. In a possible embodiment, a nut 4 is fixedly connected to the outer tube 2, and the cannulated screw 31 is connected to the nut 4 by means of a thread on its outer surface. The nut 4 itself may be welded to the outer tube 2.

In addition, the sleeve structure can be further provided with a bushing 5, and the bushing 5 is wrapped on the end part of the outer pipe 2 to ensure that the outer pipe 2 and the inner pipe 1 can slide smoothly. The bushing 5 may also extend towards the locking knob 3 to cover the bottom nut 4 portion.

When the inner tube is used, the fixed knob 34 is screwed on the nut 4 welded with the outer tube 2, at the moment, the pin 32 can be pressed on the outer wall of the inner tube 1, meanwhile, the pin 32 overcomes the elastic force of the spring 33 to drive the movable knob 35 to move backwards to be separated from the fixed knob 34, and after the inner tube 1 slides, the pin 32 can fall into the positioning hole 11 of the inner wall.

If the height needs to be adjusted again, the movable knob 35 is pulled outwards and rotated by a certain angle (for example, 90 °), so that the clamping piece 34b is separated from the limiting clamping groove 35a, and the movable knob 35 cannot automatically rebound. After the position is adjusted to a proper position, the clamping piece 34b on the movable knob 35 is rotated back to the position limiting clamping groove 35a, so that the pin 32 can be automatically inserted into the positioning hole 11 under the driving of the spring 33.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The above description is only a preferred example of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present application should be included in the scope of the present application.

Claims (10)

1. A locking knob, comprising: hollow screw and pin, the pin passes along the axial hollow screw, hollow screw is inside to be provided with movable cavity, pin week side is provided with the stop part, the stop part is located in the movable cavity, the pin has cup jointed the spring outward, the spring is located the stop part with between hollow screw's the tip.

2. The locking knob of claim 1, wherein: the hollow screw is connected with the fixed knob, and the pin is connected with the movable knob.

3. The locking knob of claim 2, wherein: the hollow screw and the fixed knob are fixedly connected through injection molding and pre-embedding.

4. The locking knob of claim 2, wherein: the pin is fixedly connected with the movable knob through threads.

5. The locking knob of claim 2, wherein: the fixed knob is provided with a groove for accommodating the movable knob.

6. The locking knob of claim 5, wherein: be provided with joint spare in the recess, be provided with spacing draw-in groove on the activity knob, only work as joint spare with spacing draw-in groove position corresponds, the activity knob just can fall into in the recess.

7. A sleeve structure, characterized by: the locking device comprises an inner pipe and an outer pipe, wherein the outer pipe is sleeved outside the inner pipe, a plurality of positioning holes are formed in the side wall of the inner pipe, the side wall of the outer pipe is provided with the locking knob according to any one of claims 1-6, and the outer pipe is provided with a through hole for the pin to pass through.

8. The bushing structure of claim 7 wherein: the outer pipe is fixedly connected with a nut, and the hollow screw is connected with the nut through threads on the outer surface of the hollow screw.

9. The bushing structure of claim 8 wherein: the nut is connected with the outer pipe in a welding mode.

10. The bushing structure of claim 7 wherein: the sleeve structure further comprises a bushing which is wrapped on the end of the outer pipe and extends towards the locking knob.

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