CN212928423U

CN212928423U - Extension bar with fixed knot constructs

Info

Publication number: CN212928423U
Application number: CN202021344307.0U
Authority: CN
Inventors: 罗石; 任妍玲
Original assignee: Shenzhen Mengshi Technology Co ltd
Current assignee: Shenzhen Mengshi Technology Co ltd
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2021-04-09
Anticipated expiration: 2030-07-10

Abstract

The utility model relates to the technical field of auxiliary tools, in particular to an extension bar with a fixed structure, which comprises a vertically arranged first extension bar, wherein the first extension bar is arranged in a hollow way, two cylindrical first hollow grooves are symmetrically arranged in the side wall of the first extension bar, the first hollow grooves are parallel to the axis direction of the first extension bar, a vertically arranged support plate is fixedly connected at the top end in the first hollow grooves, a slide rail is fixedly connected at one side of the support plate, which faces the center of the first extension bar, and is vertical to the support plate, a slide rail is connected with a slide block in a sliding way, the slide block is fixedly connected with the support plate through a first spring, a connecting rod is connected with the slide block in a rotating way, one end of the connecting rod, which is far away from the slide block, is connected with a clamping canceling mechanism, the utility model has reasonable structural design, and the first extension bar and a second extension bar are fixed through, the shrinkage caused by extrusion collision can not occur, and the applicability is stronger.

Description

Extension bar with fixed knot constructs

Technical Field

The utility model relates to an appurtenance technical field especially relates to an extension bar with fixed knot constructs.

Background

The contact-type precision measuring instrument has a key component, namely a measuring needle, the precision of the measuring needle contacting a measured workpiece directly influences the measuring precision, the length of the measuring needle is in a certain range due to the limitation of the material and the structure of the measuring needle, the length of the measuring needle made of metal materials, such as the measuring needle made of stainless steel materials and tungsten carbide materials, is usually 10mm to 50mm, although the length of the carbon fiber measuring needle can reach 100mm, the diameter of the carbon fiber measuring needle is usually more than 3mm and is not suitable for measuring small holes, an extension rod is arranged between the measuring head and the measuring needle, the effect of increasing the length of the measuring needle is achieved, and the defect that a deeper vacancy or other special positions cannot be measured when the measuring needle is used alone is overcome.

The existing extension bar lacks a fixing structure, so that if the extension bar is collided with an object in the using process, the extension bar can retract due to extrusion, the effect of the extension bar is limited, the extension bar is inconvenient to use, the free end of the extension bar lacks a connecting device, general instrument devices are difficult to connect with the extension bar, the use is inconvenient, and for the purpose, the extension bar with the fixing structure is provided to solve the problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the extension bar with fixed knot constructs that proposes, is convenient for effectively fix the extension bar, prevents that the extension bar from contracting because of the collision in the use to set up connecting device, make extension bar and instrument, part etc. be connected more convenient.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an extension bar with a fixing structure is designed, which comprises a first extension bar vertically arranged, wherein the first extension bar is arranged in a hollow way, two cylindrical first hollow grooves are symmetrically arranged in the side wall of the first extension bar, the first hollow grooves are parallel to the axial direction of the first extension bar, a vertically arranged support plate is fixedly connected with the top end in the first hollow groove, a slide rail is fixedly connected with one side of the support plate, which faces the center of the first lengthening rod, the slide rail is vertical to the support plate, the slide rail is connected with a slide block in a sliding way, the slide block is fixedly connected with the support plate through a first spring, the slide block is rotationally connected with a connecting rod, one end of the connecting rod, which is far away from the slide block, is connected with a clamping canceling mechanism, the first extension bar is connected with a second extension bar in a sliding mode, and a plurality of clamping grooves matched with the sliding blocks are formed in the surface of the second extension bar.

Preferably, joint canceling mechanism includes and rotates the slide bar of being connected with the one end that the slider was kept away from to the connecting rod, the slide bar runs through first extension bar wall body and sliding connection with it, be equipped with cylindric second cavity groove in the first extension bar, the second cavity groove is located between two first cavity grooves, the second cavity inslot is equipped with the stopper of cake form, the outer vertical screw rod that is provided with of first extension bar, the screw rod runs through first extension bar wall body and threaded connection with it, the screw rod is located second cavity inslot portion and stopper fixed connection, it is connected with the joint pole to rotate on the screw rod, the joint pole both ends are located first extension bar outer part fixed connection with the slide bar respectively, joint pole one side is equipped with the extruded article with screw rod fixed connection, extruded article and joint pole counterbalance contact.

Preferably, the last fixed ring of fixedly connected with of slide bar, gu fixed ring agrees with mutually and sliding connection with first cavity inslot wall, gu fixed ring passes through second spring and first cavity inslot wall fixed connection, the second spring winding is on the slide bar, first cavity inslot fixedly connected with spacing ring, spacing ring and slide bar sliding connection.

Preferably, the top end of the second extension rod is fixedly connected with two symmetrically arranged connecting pieces, each connecting piece is provided with a mounting hole and is arc-shaped, and the radian of each connecting piece is identical to that of the cross section of the second extension rod.

Preferably, the slider is the square form, the draw-in groove be with slider assorted square form, just equidistant setting between a plurality of draw-in grooves.

Preferably, the size and the shape of the fixing ring and the size and the shape of the limiting ring are the same, the sliding rod is vertically arranged, and the sliding rod and the supporting plate are located on the same vertical plane.

The utility model provides a, beneficial effect lies in:

1. through setting up slider and a plurality of draw-in grooves, realize the joint fixed to first extension bar and second extension bar, prevent that the extension bar from because of the extrusion collision shrink in the use, the influence is used.

2. Through setting up connecting piece and mounting hole for devices such as instrument, part are connected with the extension rod more conveniently, provide the installation basis for devices such as instrument, part, and the practicality is stronger.

3. Through setting up devices such as screw rod, joint pole for the joint to control cancellation slider and draw-in groove is simple and convenient more, thereby makes the length adjustment of extension rod simpler, convenient to use.

Compared with the prior art, the utility model has the advantages of reasonable design, through setting up slider and draw-in groove for it is fixed between first extension bar and the second extension bar, can not shrink because of the extrusion collision, and the suitability is stronger.

Drawings

Fig. 1 is a schematic view of a front view of an extension bar with a fixing structure according to the present invention;

fig. 2 is a schematic side view of an extension bar with a fixing structure according to the present invention;

FIG. 3 is a schematic view of the cross-sectional structure of FIG. 1 along the A-A direction according to the present invention;

fig. 4 is a schematic bottom view of an extension rod with a fixing structure according to the present invention;

FIG. 5 is an enlarged schematic view of a portion B of FIG. 1 according to the present invention;

fig. 6 is an enlarged schematic structural view of a portion C in fig. 3 according to the present invention.

In the figure: first extension bar 1, first cavity groove 2, backup pad 3, slide rail 4, slider 5, first spring 6, connecting rod 7, joint canceling mechanism 8, second extension bar 9, draw-in groove 10, slide bar 11, second cavity groove 12, stopper 13, screw rod 14, joint pole 15, extruded article 16, solid fixed ring 17, second spring 18, spacing ring 19, connecting piece 20, mounting hole 21.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-6, an extension bar with a fixed structure comprises a vertically arranged first extension bar 1, the first extension bar 1 is arranged in a hollow manner, two cylindrical first hollow grooves 2 are symmetrically arranged in the side wall of the first extension bar 1, the first hollow grooves 2 are parallel to the axial direction of the first extension bar 1, a vertically arranged support plate 3 is fixedly connected to the top end of the first hollow grooves 2, a slide rail 4 is fixedly connected to one side of the support plate 3 facing the center of the first extension bar 1, the slide rail 4 is perpendicular to the support plate 3, the slide rail 4 is slidably connected with a slide block 5, the slide block 5 is fixedly connected with the support plate 3 through a first spring 6, the slide block 5 is rotatably connected with a connecting rod 7, one end of the connecting rod 7 far away from the slide block 5 is connected with a clamping and canceling mechanism 8, a second extension bar 9 is slidably connected with the first extension bar 1, the surface of the second extension bar 9 is provided with a plurality of, second extension bar 9 offsets with 1 inner wall of first extension bar and contacts and sliding connection with it, makes things convenient for the length adjustment of extension bar, simultaneously easy to assemble and dismantlement.

The clamping canceling mechanism 8 comprises a sliding rod 11 rotatably connected with one end of the connecting rod 7 far away from the sliding block 5, the sliding rod 11 penetrates through the wall body of the first extension bar 1 and is in sliding connection with the first extension bar, a cylindrical second hollow groove 12 is arranged in the first extension bar 1, the second hollow groove 12 is positioned between the two first hollow grooves 2, a round cake-shaped limiting block 13 is arranged in the second hollow groove 12, a screw 14 is vertically arranged outside the first extension bar 1, the screw 14 penetrates through the wall body of the first extension bar 1 and is in threaded connection with the wall body, the screw 14 is positioned in the second hollow groove 12 and is fixedly connected with the limiting block 13, a clamping rod 15 is rotatably connected on the screw 14, two ends of the clamping rod 15 are respectively fixedly connected with the sliding rod 11 positioned outside the first extension bar 1, an extruding part 16 fixedly connected with the screw 14 is arranged on one side of the clamping rod 15, the extruding part 16 is in abutting contact with the clamping rod 15, the limiting, the screw 14 is prevented from slipping, the extrusion piece 16 is matched with the screw 14 to limit the clamping rod 15, and the clamping rod 15 is driven to move so as to control clamping.

Fixed ring 17 of fixedly connected with on the slide bar 11, fixed ring 17 agrees with mutually and sliding connection with it with 2 inner walls of first hollow groove, fixed ring 17 passes through

second spring

18 and 2 inner walls fixed connection of first hollow groove, second spring 18 winding is on

slide bar

11, 2 fixedly connected with spacing rings 19 of first hollow groove,

spacing rings

19 and 11 sliding connection of slide bar, fixed ring 17 carries on spacingly with spacing rings 19 to slide bar 11, make slide bar 11 only can move on vertical direction, more do benefit to the realization of device function.

Connecting piece 20 that 9 tops of second extension bar fixedly connected with two symmetries set up, connecting piece 20 is equipped with mounting hole 21, connecting piece 20 is the arc, connecting piece 20 radian is the same with 9 cross-sectional radians of second extension bar, slider 5 is the square form, draw-in groove 10 be with 5 assorted square forms of slider, and equidistant setting between a plurality of draw-in grooves 10, connecting piece 20 makes things convenient for the installation of devices such as instrument, part with mounting hole 21, equidistant setting of a plurality of draw-in grooves 10, conveniently adjust the flexible length of second extension bar 9.

The size and the shape of the fixing ring 17 and the limiting ring 19 are the same, the sliding rod 11 is vertically arranged, the sliding rod 11 and the supporting plate 3 are located on the same vertical plane, and the sliding rod 11 and the supporting plate 3 are located on the same vertical plane, so that the connecting rod 7 is inclined, and the sliding rod 11 is more convenient to bear force.

The working principle is as follows: the screw 14 is rotated to move the screw 14 outwards, the screw 14 and the extrusion piece 16 drive the clamping rod 15 to move outwards, the clamping rod 15 drives the sliding rod 11 to slide outwards, the sliding rod 11 drives the connecting rod 7 to move, the connecting rod 7 pulls the sliding block 5 to overcome the acting force of the first spring 6 and move towards the first hollow groove 2, then the second extension rod 9 is pulled outwards to adjust to the proper length, the screw 14 is rotated inwards, the screw 14 and the extrusion piece 16 drive the clamping rod 15 to move inwards, the clamping rod 15 drives the sliding rod 11 to slide inwards, meanwhile, the second spring 18 pushes the sliding rod 11 to move, the sliding rod 11 drives the connecting rod 7 to push the sliding block 5 to move, meanwhile, the first spring 6 pushes the sliding block 5 to move outwards to be clamped and fixed with the clamping groove 10, and then the instruments or parts and other devices are fixed through the connecting piece 20 and the mounting hole 21, and the allocation is completed.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The extension bar with the fixing structure comprises a vertically arranged first extension bar (1) and is characterized in that the first extension bar (1) is arranged in a hollow mode, two cylindrical first hollow grooves (2) are symmetrically arranged in the side wall of the first extension bar (1), the first hollow grooves (2) are parallel to the axis direction of the first extension bar (1), a vertically arranged supporting plate (3) is fixedly connected to the inner top end of each first hollow groove (2), a sliding rail (4) is fixedly connected to one side, facing the center of the first extension bar (1), of each supporting plate (3), the sliding rail (4) is perpendicular to the supporting plate (3), a sliding block (5) is connected to the sliding rail (4) in a sliding mode, the sliding block (5) is fixedly connected with the supporting plate (3) through a first spring (6), and a connecting rod (7) is rotatably connected to the sliding block (5), one end of the connecting rod (7) far away from the sliding block (5) is connected with a clamping canceling mechanism (8), the first extension bar (1) is connected with a second extension bar (9) in a sliding mode, and a plurality of clamping grooves (10) matched with the sliding block (5) are formed in the surface of the second extension bar (9).

2. The extension bar with the fixing structure according to claim 1, wherein the clamping cancellation mechanism (8) comprises a sliding bar (11) rotatably connected to an end of the connecting bar (7) far away from the sliding block (5), the sliding bar (11) penetrates through a wall body of the first extension bar (1) and is slidably connected thereto, a cylindrical second hollow groove (12) is arranged in the first extension bar (1), the second hollow groove (12) is located between the two first hollow grooves (2), a circular cake-shaped stopper (13) is arranged in the second hollow groove (12), a screw rod (14) is vertically arranged outside the first extension bar (1), the screw rod (14) penetrates through the wall body of the first extension bar (1) and is in threaded connection therewith, the screw rod (14) is located inside the second hollow groove (12) and is fixedly connected with the stopper (13), a clamping bar (15) is rotatably connected to the screw rod (14), the clamping device is characterized in that two ends of the clamping rod (15) are fixedly connected with the outer part of the first extension rod (1) of the sliding rod (11) respectively, an extrusion part (16) fixedly connected with the screw rod (14) is arranged on one side of the clamping rod (15), and the extrusion part (16) is abutted to the clamping rod (15).

3. The extension bar with the fixed structure as claimed in claim 2, wherein the slide bar (11) is fixedly connected with a fixing ring (17), the fixing ring (17) is engaged with and slidably connected with the inner wall of the first hollow groove (2), the fixing ring (17) is fixedly connected with the inner wall of the first hollow groove (2) through a second spring (18), the second spring (18) is wound on the slide bar (11), the first hollow groove (2) is fixedly connected with a limit ring (19), and the limit ring (19) is slidably connected with the slide bar (11).

4. The extension bar with the fixing structure as claimed in claim 1, wherein two symmetrically arranged connecting pieces (20) are fixedly connected to the top end of the second extension bar (9), the connecting pieces (20) are provided with mounting holes (21), the connecting pieces (20) are arc-shaped, and the radian of the connecting pieces (20) is the same as that of the section of the second extension bar (9).

5. The extension bar with the fixing structure according to claim 1, wherein the sliding block (5) is in a square block shape, the locking grooves (10) are in a square block shape matched with the sliding block (5), and the locking grooves (10) are arranged at equal intervals.

6. The extension bar with the fixing structure according to claim 3, wherein the fixing ring (17) and the limiting ring (19) are the same in size and shape, the sliding bar (11) is vertically arranged, and the sliding bar (11) and the support plate (3) are located in the same vertical plane.