CN113542943A

CN113542943A - Pull rod adjusting device and sound box using same

Info

Publication number: CN113542943A
Application number: CN202110620623.9A
Authority: CN
Inventors: 顾先兵
Original assignee: Zhejiang Tenuoqi Electronics Co ltd
Current assignee: Zhejiang Tenuoqi Electronics Co ltd
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2021-10-22

Abstract

The present invention relates to a lever adjusting device and a speaker using the same, and more particularly, to the field of a lever and a speaker having the same. The problem of current stereo set pull rod length can not continuous adjustment and cooperate between the multi-rod pull rod not smooth is solved, its technical scheme main points are: the expansion fin is extruded by the top plug, so that the expansion fin is in interference fit with the outer pipe of the rod; the expansion fin is connected with the rod inner tube, so that the rod inner tube and the rod outer tube are locked; otherwise, the rod inner tube and the rod outer tube are unlocked; the purpose of freely adjusting the length of the pull rod is achieved.

Description

Pull rod adjusting device and sound box using same

Technical Field

The present invention relates to a lever adjusting device and a speaker using the same, and more particularly, to the field of a lever and a speaker having the same.

Background

The prior art adopts and pushes down the handle button, drives the pull rod ejector pin and goes to promote the bullet round pin of the bullet round pin seat in the pull rod inner tube the inside and slide flexible, and when bullet round pin retracted from appointed pull rod outer tube hole site, the pull rod inner tube was not hindered and is can reciprocate from the upper and lower position of control rod. Because the pull rod mechanisms are symmetrical left and right, the pull rod mechanisms have high installation accuracy and need to be in the same horizontal and vertical positions. If great deviation appears in the installation, will appear when pressing down the handle button on one side the bullet round pin in the bullet round pin seat in the pull rod inner tube indentation from the appointed hole site of pull rod outer tube, and the bullet round pin in the bullet round pin seat in the pull rod inner tube of another side just probably does not indent from the appointed hole site of pull rod outer tube, leads to whole pull rod inner tube can not smooth and easy adjustment upper and lower position. Further, the hole positions cannot be continuously set, and the length of the tie rod cannot be fixed at all.

Disclosure of Invention

The invention aims to provide a pull rod adjusting device, which achieves the effects of smoothly adjusting the position of a pull rod and identifying the position of a fixed pull rod.

The technical purpose of the invention is realized by the following technical scheme: a drawbar adjustment device comprising: the rod inner pipe is arranged in the rod outer pipe and can move along the axial direction of the rod outer pipe; the locking mechanism comprises an expansion fin, a top plug and a push rod, and the expansion fin is arranged at the bottom of the inner rod tube and is arranged in the outer rod tube; the top plug is connected with one end of the push rod; under the drive of the push rod, the top plug can extrude the expansion fins, and the expansion fins are tightly attached to the inner wall of the rod outer tube, so that the rod inner tube is locked on the rod outer tube.

The invention is further provided with a reset mechanism, wherein one end of the reset mechanism is connected with the rod inner tube, and the other end of the reset mechanism is connected with the push rod, so that the push rod can be reset.

Through adopting above-mentioned technical scheme, after the exogenic action push rod was ended, canceling release mechanical system can make the push rod reset.

The invention is further configured to: the reset mechanism includes: the supporting seat is fixed on the inner wall of the rod inner tube; the annular bulge is positioned on the push rod; and one end of the elastic piece is connected with the supporting seat, and the other end of the elastic piece is connected with the bulge.

The invention is further configured to: the supporting seat is arranged at the bottom of the rod inner tube; the expansion fin is fixed on the supporting seat and is arranged in the rod outer tube.

The invention is further configured to: the expansion device is provided with a plurality of expansion fins which are annularly distributed on the supporting seat.

The invention is further configured to: the push rod reciprocating mechanism is characterized by further comprising a pressing mechanism, wherein the pressing mechanism is connected with the push rod to enable the push rod to reciprocate. It should be noted that the reciprocating motion of the pressing mechanism may replace the function of the return mechanism. Whether a separate reset mechanism is required or not is set according to a specific scheme.

The invention is further configured to: the pressing mechanism comprises a handle cover, the handle cover is connected with the rod inner tube, and a window for enabling a handle button to leak is formed in the handle cover; the handle button is positioned in the handle cover and connected with the push rod, and part of the handle button is positioned in the handle cover window; and one end of the elastic piece is connected with the handle cover, and the other end of the elastic piece is connected with the handle button.

The invention is further configured to: an ejector rod is arranged between the handle button and the push rod, one end of the ejector rod is connected with the handle button, and the other end of the ejector rod is connected with the push rod.

The invention is further configured to: the ejector rod is connected with the push rod through an ejector rod cap.

According to the invention, the sound box is also provided, and the sound box comprises the pull rod adjusting device.

In conclusion, the invention has the following beneficial effects: the push rod drives the top plug to extrude the expansion fin, so that the expansion fin is in interference fit with the rod outer tube to generate friction, and the expansion fin is relatively fixed with the rod inner tube, so that the rod inner tube and the rod outer tube are relatively static to achieve a fixing effect. Otherwise, the push rod drives the ejector plug to be pushed out, interference fit does not exist, and the rod inner rod and the rod outer tube can move relatively. The problem that two pull rods are not smooth is solved through the scheme, and the pull rods cannot be fixed at any position.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view of the installation of the solution of the present invention;

FIG. 2 is a view showing an adjustment state of the drawbar adjusting device according to the present invention;

FIG. 3 is a view showing a locking state of the drawbar adjusting device according to the present invention;

in the figure: 11. a handle cover; 12. a rod inner tube; 13. a rod outer tube; 14. a rod bushing; 21. a handle button; 22. a first spring; 23. a top rod; 24. a jack rod cap; 31. a push rod; 32. a second spring; 33. a supporting seat; 34. an expansion fin; 35. a top plug; 36. and (4) protruding.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly or indirectly connected to the other element, and the "connection" does not limit the fixed connection or the movable connection, and the specific connection mode should be determined according to the specific technical problem to be solved.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Example 1:

it is mentioned in the background art that the length of the pull rod is positioned by adopting a pin structure in the prior art, because the elastic pin needs the matching of a hole, the continuous change of the length cannot be realized, and when a plurality of pull rod structures are provided, the position deviation of the hole can cause the unsmooth adjustment of the length of the pull rod. In order to solve the problems, the embodiment provides the pull rod adjusting device with the continuously variable length and the pull rod box using the same.

The embodiment is realized by the following technical scheme: a drawbar adjustment device comprising: the rod inner tube (12) is arranged in the rod outer tube (13) and can move along the axial direction of the rod outer tube (13); the locking mechanism comprises an expansion fin (34), a top plug (35) and a push rod (31), wherein the expansion fin (34) is arranged at the bottom of the rod inner tube (12) and is arranged in the rod outer tube (13); the top plug (35) is connected with one end of the push rod (31); under the drive of the push rod (31), the top plug (35) can extrude the expansion fin (34) to generate interference fit with the inner wall of the outer rod tube (13), so that the expansion fin (34) is tightly attached to the inner wall of the outer rod tube (13). Since the expansion fin (34) is fixed to the rod inner tube (12), the expansion fin (34) is brought into close contact with the rod outer tube (13), and then the rod inner tube is locked to the rod outer tube (13).

The top plug (35) is further provided with a conical inclined surface, and the conical inclined surface can better extrude the expansion fin (34) to enable the fin to be tightly attached to the inner wall of the outer pipe (13) of the rod.

The expansion fin (34) is made of a material capable of generating high friction force, such as a rubber material, and can be more stable in the process of matching with the outer pipe of the rod.

The inner wall surface of the outer pipe (13) of the rod is rough, and the purpose of the rough surface is to generate larger friction force in the matching of the expansion fins (34).

Further expansion fin (34) have a plurality ofly, evenly set up in pole inner tube (12) bottom, the cooperation of a plurality of expansion fin (34) and top plug (35) makes the structure more stable.

The pull rod adjusting device further comprises a pressing mechanism, wherein the pressing mechanism is connected with the push rod (31) to enable the push rod (31) to reciprocate, and in the reciprocating process, the top plug (35) can be loosened or the expansion fin (34) can be squeezed, so that the outer rod pipe (13) and the inner rod pipe (12) can freely move or be locked.

The pressing mechanism further comprises a handle cover (11), the handle cover (11) is connected with the rod inner tube (12), and a window for enabling a handle button (21) to leak is formed in the handle cover (11); the handle button (21) is positioned in the handle cover (11) and connected with the push rod (31), and part of the handle button (21) is positioned in the window of the handle cover (11); one end of the elastic piece is connected with the handle cover (11), and the other end of the elastic piece is connected with the handle button (21).

When the handle button (21) is pressed, the handle button (21) pushes the push rod (31) to drive the top plug (35) to move downwards, the expansion fin (34) disappears under the force of the top plug, the expansion fin is separated from the contact with the outer rod pipe (13) under the action of self elasticity or gravity, the inner rod pipe (12) can freely move in the outer rod pipe (13), and then the length is adjusted.

When loosening handle button (21), under the effect of elastic component, handle button (21) recovery state, and then drive push rod (31) and top stopper (35) extrusion inflation fin (34), inflation fin (34) and pole outer tube (13) inner wall produce interference fit, make pole inner tube (12) locking in pole outer tube (13), and then the length of fixed pull rod.

The elastic element is a first spring (22).

Further, the handle cover (11) is connected with the two rod inner tubes (12), and the handle button (21) is connected with the two push rods (31).

The scheme can ensure that the object fixed on the pull rod is more stable in the moving process and more uniform in stress. Because there is not a hole in two sets of inside and outside pipes, so do not need especially high installation accuracy, also can make the pull rod smooth regulation length.

Further embodiments provide a sound device with the above technical features.

The bottom of the sound box is provided with wheels, so that the sound box can be moved more conveniently under the action of the pull rod.

Example 2:

the embodiment provides a pull rod adjusting device with components convenient to replace.

The embodiment is realized by the following technical scheme: a drawbar adjustment device comprising: the rod inner tube (12) is arranged in the rod outer tube (13) and can move along the axial direction of the rod outer tube (13); the locking mechanism comprises an expansion fin (34), a top plug (35) and a push rod (31), wherein the expansion fin (34) is arranged at the bottom of the rod inner tube (12) and is arranged in the rod outer tube (13); the top plug (35) is connected with the push rod (31).

Further the pull rod adjusting device further comprises: one end of the reset mechanism is connected with the rod inner tube (12), the other end of the reset mechanism is connected with the push rod (31), and the push rod (31) can be reset after the push rod is acted by external force.

Further the reset means comprises: the supporting seat (33), the said supporting seat (33) is fixed to the inner wall of the inner tube of the pole (12); a projection (36), the annular projection (36) being located on the push rod (31); and one end of the elastic piece is connected with the supporting seat (33), and the other end of the elastic piece is connected with the second spring (32).

The further elastic element is a second spring (32), the second spring (32) is arranged on the supporting seat (33), and the push rod (31) is inserted into the second spring (32) so that the protrusion (36) is connected with the second spring (32).

The push rod (31) drives the top plug (35) to extrude the expansion fin (34) under the support of the second spring (32), and the expansion fin (34) is in interference fit with the inner wall of the outer rod tube (13) to be tightly attached to the inner wall of the outer rod tube (13). Since the expansion fin (34) is fixed to the rod inner tube (12), the expansion fin (34) is brought into close contact with the rod outer tube (13), and then the rod inner tube is locked to the rod outer tube (13).

When the push rod (31) is pushed by external force, the second spring (32) is compressed, the push rod (31) pushes the top plug (35), so that the extrusion force applied to the expansion fin (34) is reduced or eliminated, the expansion fin (34) recovers deformation and is separated from the outer rod tube (13) or the friction force between the expansion fin and the outer rod tube (13) is reduced, the inner rod tube (12) and the outer rod tube (13) can freely move, and the purpose of adjusting the length is achieved.

The plug (35) further has a tapered slope; the interference fit can be created with a better fit of the expansion fin (34).

The expansion fin (34) is further fixed on the support seat (33).

The support is further provided with a plurality of expansion fins (34), and the expansion fins (34) are annularly distributed on the support seat (33).

Furthermore, the supporting seat (33) is detachably arranged at the bottom of the rod inner tube (12), and the expansion fin (34) is arranged in the rod outer tube (13).

The pull rod adjusting device further comprises a pressing mechanism, and the pressing mechanism is connected with the push rod (31) to enable the push rod (31) to reciprocate.

Further the pressing mechanism comprises: the handle cover (11), the said handle cover (11) is connected with pole inner tube (12), there is window that makes the knob button (21) leak on the handle cover (11); the handle button (21) is positioned in the handle cover (11) and connected with the push rod (31), and part of the handle button (21) is positioned in the window of the handle cover (11); one end of the elastic piece is connected with the handle cover (11), and the other end of the elastic piece is connected with the handle button (21). The elastic piece is a first spring (22).

Further, a push rod (23) is arranged between the handle button (21) and the push rod (31), one end of the push rod (23) is connected with the handle button (21), and the other end of the push rod (23) is connected with the push rod (31).

The ejector rod (23) is further connected with the push rod (31) through an ejector rod cap (24).

After the handle button (21) is pressed, force is transmitted to the ejector plug (35) through the ejector rod (23) and the push rod (31), the unlocking effect is achieved, and the rod inner rod and the rod outer tube (13) can move. After the handle button (21) is released, the handle button (21) is reset through an elastic piece in the handle cover (11) to prepare for next pressing; the push rod (31) resets under the action of the second spring (32), the supporting seat (33) and the protrusion (36), and drives the top plug (35) to extrude the expansion fin (34) to play a role in locking.

The expansion fin (34) is easily damaged due to long-term wear. The embodiment arranges the expansion fins (34) on the supporting seat (33), the supporting seat (33) is detachably arranged at the bottom of the rod inner tube (12), and when the fins are broken, the ejector rod (23) can be drawn out, and the supporting seat (33) is taken down and replaced.

In the embodiment, the push rod (31) is connected with the handle button (21) through the ejector rod (23) and the aim of replacing parts is also to be more convenient. The ejector rod (23) is connected with the push rod (31) through an ejector rod cap (24), and the purpose of the ejector rod cap is to increase the contact area and enable force to be transmitted to the push rod (31) more uniformly and easily.

The further setting is again pull rod bush (14), pull rod bush (14) detachable sets up in pole outer tube (13) top, and pole inner tube (12) are through bush insert pole outer tube (13).

The presence of the rod bushing (14) prevents the inner tube (12) of the rod from being moved excessively to cause separation of the inner and outer tubes.

Further embodiments provide a sound device with the above technical features.

The bottom of the sound box is provided with wheels, so that the sound box can be moved more conveniently under the action of the pull rod. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The specific embodiments are only for explaining the present invention, and the present invention is not limited thereto, and those skilled in the art can make modifications without inventive contribution to the present embodiments as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. A pull rod adjusting device is characterized by comprising:

the rod inner tube (12) is arranged in the rod outer tube (13) and can move along the axial direction of the rod outer tube (13);

the locking mechanism comprises an expansion fin (34), a top plug (35) and a push rod (31), wherein the expansion fin (34) is arranged at the bottom of the rod inner tube (12) and is arranged in the rod outer tube (13); the top plug (35) is connected with the push rod (31); under the drive of the push rod (31), the top plug (35) can extrude the expansion fin (34) to be tightly attached to the inner wall of the outer rod pipe (13), so that the inner rod pipe (12) is locked on the outer rod pipe (13).

2. A drawbar adjustment device according to claim 1, when comprising: one end of the reset mechanism is connected with the rod inner tube (12), the other end of the reset mechanism is connected with the push rod (31), and the push rod (31) can be reset after the push rod (31) is acted by external force.

3. A drawbar adjustment device according to claim 2, characterized in that the reset device comprises:

the supporting seat (33), the said supporting seat (33) is fixed to the inner wall of the inner tube of the pole (12);

a protrusion (36), the protrusion (36) being located on the push rod (31);

one end of the elastic piece is connected with the supporting seat (33), and the other end of the elastic piece is connected with the bulge (36).

4. A drawbar adjustment device according to claim 3, characterized in that the expansion fin (34) is fixed to the support base (33).

5. A rod adjustment device according to claim 4, characterized in that there are a plurality of expansion fins (34), the plurality of expansion fins (34) being annularly distributed on the support base (33).

6. The apparatus of claim 1, further comprising: and a pressing mechanism which is connected with the push rod (31) and enables the push rod (31) to reciprocate.

7. The apparatus of claim 6, wherein the pressing mechanism comprises:

the handle cover (11), the said handle cover (11) is connected with pole inner tube (12), there is window that makes the knob button (21) leak on the handle cover (11);

the handle button (21) is positioned in the handle cover (11) and connected with the push rod (31), and part of the handle button (21) is positioned in the window of the handle cover (11);

one end of the elastic piece is connected with the handle cover (11), and the other end of the elastic piece is connected with the handle button (21).

8. A drawbar adjustment device according to claim 7, characterized in that a push rod (23) is provided between the handle button (21) and the push rod (31), the push rod (23) being connected at one end to the handle button (21) and at the other end to the push rod (31).

9. A drawbar adjustment device according to claim 8, characterized in that the ram (23) is connected to the push rod (31) by a ram cap (24).

10. A sound box comprising a pull rod adjusting device, wherein the pull rod adjusting device is the pull rod adjusting device according to any one of claims 1 to 9.