CN211144109U

CN211144109U - Four-bar linkage capable of circularly positioning

Info

Publication number: CN211144109U
Application number: CN201921953951.5U
Authority: CN
Inventors: 李岩
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-07-31
Anticipated expiration: 2029-11-13

Abstract

The utility model discloses a circulated location four connecting rods, which comprises a plate body, set up the spout in the plate body, sliding connection has fixed block and slider in the spout, the last lateral wall of fixed block articulates the one end that has head rod and second connecting rod, the other end of head rod articulates there is the third connecting rod, the middle part of third connecting rod articulates the one end that has the fourth connecting rod, the other end of fourth connecting rod articulates with the last lateral wall of slider, the other end of second connecting rod articulates mutually with the middle part of fourth connecting rod, fixed mounting has the lug in the spout. In the process that this device was from launching to retrieving, through the cooperation of lug with the trigger block, can make first fixture block bounce to make the spring continue to produce elasticity to pressing the briquetting before next expansion, in the in-process buckle that makes next expansion slides the draw-in groove in the disect insertion draw-in groove, thereby prescribe a limit to the position of slider, and then realize the circulation location.

Description

Four-bar linkage capable of circularly positioning

Technical Field

The utility model relates to a four connecting rod technical field specifically is circulated location four connecting rods.

Background

The four-bar linkage is a connection structure who is often used in door and window, can make opening and closing of door and window more stable at the in-process that uses, and current four-bar linkage is fixed when guaranteeing to expand and withdraw, is provided with the mechanism that is used for the location mostly, but current positioning mechanism accomplishes the location back when expanding, and positioning mechanism can not restore automatically when withdrawing, still needs manual operation, and the process is loaded down with trivial details. To this end, we propose a four-bar linkage that can be cyclically positioned.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a circulated location four connecting rods to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: circulated location four-bar linkage, the package rubbing board body, the spout has been seted up in the plate body, sliding connection has fixed block and slider in the spout, the last lateral wall of fixed block articulates the one end that has head rod and second connecting rod, the other end of head rod articulates there is the third connecting rod, the middle part of third connecting rod articulates the one end that has the fourth connecting rod, the other end of fourth connecting rod articulates with the last lateral wall of slider, the other end of second connecting rod articulates mutually with the middle part of fourth connecting rod, contained angle between third connecting rod and the plate body is 90 degrees, the preceding lateral wall fixed mounting of slider has the installation piece, the last fixed surface of installation piece installs locating component, the third connecting rod passes through locating component with the plate body and keeps fixed, fixed mounting has the lug in the spout.

Preferably, locating component includes bilateral symmetry fixed mounting at the fixed plate of side wall on the installation piece, two run through the axis of rotation in the fixed plate, the lateral wall of axis of rotation has cup jointed according to the piece, according to the left and right side wall symmetry fixed mounting who moves the piece there is first fixture block, according to the rear end of moving the piece under the left and right symmetry fixed mounting of lateral wall have the buckle, the buckle is pegged graft to the draw-in groove in, the draw-in groove is seted up at the side wall of going up of plate body, the installation piece with according to moving between the piece fixed mounting have the spring.

Preferably, the first clamping block and the convex block are arc-shaped bulges.

Preferably, the lower side wall of the pressing block is fixedly provided with a trigger block.

Preferably, the upper surface of the pressing block is provided with anti-skid grains.

Compared with the prior art, the beneficial effects of the utility model are that: but circulation location four-bar linkage, be provided with locating component, buckle through in the locating component can be fixed the position of slider when this device expandes, it keeps fixed to be 90 degrees between messenger's third connecting rod and the plate body, can inject the position of pressing the piece when contracting this device through locating component's first fixture block, this device is from expandeing the in-process of retrieving, cooperation through lug and trigger block, can make first fixture block bounce, thereby make the spring continue to produce elasticity to pressing the piece before expandeing next time, direct insertion to the draw-in groove when the in-process buckle that makes next time expand slides the draw-in groove, thereby inject the position of slider, and then realize circulation location.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a detailed view of fig. 1 at a.

Fig. 3 is a side view of the present invention.

In the figure: 1. plate body, 2, spout, 3, fixed block, 4, slider, 5, head rod, 6, second connecting rod, 7, third connecting rod, 8, fourth connecting rod, 9, locating component, 91, fixed plate, 92, axis of rotation, 93, press the piece, 94, first fixture block, 95, buckle, 10, installation piece, 11, lug, 12, trigger piece, 13, anti-skidding line.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and fig. 2, the present invention provides a technical solution: a four-bar linkage capable of being positioned circularly comprises a plate body 1, wherein a chute 2 is arranged in the plate body 1, a fixed block 3 and a slide block 4 are connected in the chute 2 in a sliding manner, the fixed block 3 and the slide block 4 can slide in the chute 2, the upper side wall of the fixed block 3 is hinged with one end of a first connecting rod 5 and one end of a second connecting rod 6, the other end of the first connecting rod 5 is hinged with a third connecting rod 7, the middle part of the third connecting rod 7 is hinged with one end of a fourth connecting rod 8, the other end of the fourth connecting rod 8 is hinged with the upper side wall of the slide block 4, the other end of the second connecting rod 6 is hinged with the middle part of the fourth connecting rod 8, the included angle between the third connecting rod 7 and the plate body 1 is 90 degrees, a four-bar linkage structure is formed by the first connecting rod 5, the second connecting rod 6, the third connecting rod 7 and the fourth connecting rod, the third connecting rod 7 and the plate body 1 are fixed through a positioning assembly 9, the positioning assembly 9 comprises fixing plates 91 which are symmetrically and fixedly installed on the upper side wall of the installation block 10, a rotating shaft 92 penetrates through the two fixing plates 91, a pressing block 93 is sleeved on the outer side wall of the rotating shaft 92, first fixture blocks 94 are symmetrically and fixedly installed on the left side wall and the right side wall of the pressing block 93, buckles 95 are symmetrically and fixedly installed on the left side wall and the right side wall of the lower side wall of the rear end of the pressing block 93, the buckles 95 are inserted into the clamping grooves 96, the clamping grooves 96 are formed in the upper side wall of the plate body 1, a spring 97 is fixedly installed between the installation block 10 and the pressing block 93, a convex block 11 is fixedly installed in the sliding chute 2, the side wall of the sliding chute 2 of the first fixture block 94 is clamped and fixed relative to the position of the sliding block 4 by pressing the pressing block 93, or is inserted into the clamping grooves 96 by the, make buckle 95 keep decurrent trend, the lower lateral wall fixed mounting who presses movable block 93 has trigger block 12, when withdrawing the folding time with head rod 5, second connecting rod 6, third connecting rod 7 and fourth connecting rod 8, trigger block 12 contacts with lug 11, can make first fixture block 94 shift out spout 2, no longer carry out the joint fixed, first fixture block 94 and lug 11 are the arc arch, press the upper surface of movable block 93 and seted up anti-skidding line 13, increase the frictional force on movable block 93 surface.

The working principle is as follows: when the first connecting rod 5, the second connecting rod 6, the third connecting rod 7 and the fourth connecting rod 8 are pulled apart and extended, as shown in fig. 1, at this time, an included angle of 90 degrees needs to be formed between the third connecting rod 7 and the plate body 1, in the process of unfolding, due to the elastic force generated by the spring 97, the buckle 95 keeps a downward trend all the time, after the buckle 95 is inserted into the clamping groove 96, the position of the slider 4 is fixed, so that the third connecting rod 7 and the plate body 1 keep fixed at 90 degrees, when the first connecting rod 5, the second connecting rod 6, the third connecting rod 7 and the fourth connecting rod 8 are folded and retracted, the front end of the pressing block 93 is pressed, the first clamping block 94 is clamped with the side wall of the chute 2, so that the buckle 95 is moved out of the clamping groove 96, so that the slider 4 can slide in the chute 2, the trigger block 12 is contacted with the protrusion 11 in the process of retracting, so that the first clamping block 94 of the pressing block 93 is moved out of, the clamping fixation is not performed any more, then the spring 97 can generate elasticity for the pressing block 93, so that the buckle 95 tends to be downward, the first connecting rod 5, the second connecting rod 6, the third connecting rod 7 and the fourth connecting rod 8 can be conveniently and directly positioned when being pulled open and extended next time, and the circular positioning is realized.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. Four connecting rods of circulated location, including plate body (1), its characterized in that: the plate is characterized in that a sliding groove (2) is formed in the plate body (1), a fixed block (3) is fixedly connected in the sliding groove (2), a sliding block (4) is connected in the sliding groove (2), the upper side wall of the fixed block (3) is hinged with one end of a first connecting rod (5) and a second connecting rod (6), the other end of the first connecting rod (5) is hinged with a third connecting rod (7), the middle of the third connecting rod (7) is hinged with one end of a fourth connecting rod (8), the other end of the fourth connecting rod (8) is hinged with the upper side wall of the sliding block (4), the other end of the second connecting rod (6) is hinged with the middle of the fourth connecting rod (8), an included angle between the third connecting rod (7) and the plate body (1) is 90 degrees, a mounting block (10) is fixedly mounted on the front side wall of the sliding block (4), and a positioning assembly (9) is fixedly mounted on the upper surface of, the third connecting rod (7) and the plate body (1) are kept fixed through a positioning assembly (9), and a convex block (11) is fixedly installed in the sliding groove (2).

2. The cyclically positionable four-bar linkage of claim 1 wherein: locating component (9) include bilateral symmetry fixed mounting fixed plate (91) of lateral wall on installation piece (10), two run through axis of rotation (92) in fixed plate (91), the lateral wall of axis of rotation (92) has cup jointed and has pressed piece (93), press the left and right lateral wall symmetry fixed mounting of piece (93) to have first fixture block (94), lateral wall left and right symmetry fixed mounting has buckle (95) under the rear end according to piece (93), buckle (95) are pegged graft to draw-in groove (96) in, draw-in groove (96) are seted up at the last lateral wall of plate body (1), installation piece (10) and press fixed mounting between piece (93) have spring (97).

3. The cyclically positionable four-bar linkage of claim 2 wherein: the first clamping block (94) and the convex block (11) are both arc-shaped bulges.

4. The cyclically positionable four-bar linkage of claim 2 wherein: and a trigger block (12) is fixedly arranged on the lower side wall of the pressing block (93).

5. The cyclically positionable four-bar linkage of claim 2 wherein: the upper surface of the pressing block (93) is provided with anti-skid grains (13).