CN206984095U - Steel ball drag link mechanism - Google Patents

Abstract

A kind of steel ball drag link mechanism,Including handle,Upper connecting rod,Lower pull bar,Telescoping mechanism,Button,Gear adjusting mechanism and draw-bar seat,The upper end of the upper connecting rod is fixedly connected with the handle,The telescoping mechanism includes push rod,Steel ball seat,Steel ball,Hold out against spring and spring base,The push rod is located in the upper connecting rod,The upper end of the push rod and button connects,The button is located in upper connecting rod and at handle,The lower end of the push rod is fixed with steel ball seat,The spring base is located at the lower section of the steel ball seat and in upper connecting rod,The upper end for holding out against spring is connected with steel ball seat,The lower end for holding out against spring mounts elastically,The front and rear sides of the lower end of the upper connecting rod are respectively provided with steel ball and are caught in the first spacing spacing hole,The second spacing hole corresponding with the first spacing hole is respectively equipped with the front and rear sides of the upper end of the lower pull bar.The utility model provides a kind of steel ball drag link mechanism for being easy to storage.

Description

Steel ball drag link mechanism

Technical field

Hand buggy component technology field is the utility model is related to, more particularly, to a kind of steel ball drag link mechanism.

Background technology

What the pull bar of existing hand buggy was usually fixed, it is impossible to rotation or not flexible, exist and be not easy to store, make The defects of with inconvenience.

The content of the invention

The defects of being not easy to storage be present to overcome existing hand buggy pull bar to be present, the utility model provides one kind just In the steel ball drag link mechanism of storage.

Technical scheme is used by the utility model solves its technical problem：

A kind of steel ball drag link mechanism, including handle, upper connecting rod, lower pull bar, telescoping mechanism, button, gear adjusting mechanism and Draw-bar seat, the upper end of the upper connecting rod are fixedly connected with the handle, and the lower end of the upper connecting rod can be upper and lower by telescoping mechanism Flexible is arranged in the lower pull bar, and the lower end of the lower pull bar is arranged on draw-bar seat by drawhead；

The telescoping mechanism includes push rod, steel ball seat, steel ball, holds out against spring and spring base, and the push rod is on described In pull bar, the upper end of the push rod and button connects, the button are located in upper connecting rod and at handle, the push rod Lower end is fixed with steel ball seat, and the spring base is located at the lower section of the steel ball seat and in upper connecting rod, described to hold out against spring Upper end be connected with steel ball seat, the lower end for holding out against spring is mounted elastically, and the steel ball seat is set respectively from top to bottom There is a solution locked groove and stopper slot, the front and rear sides of the lower end of the upper connecting rod are respectively provided with steel ball, and to be caught in spacing first spacing Hole, the second spacing hole corresponding with the first spacing hole, the drop-down are respectively equipped with the front and rear sides of the upper end of the lower pull bar The upper end of bar at the second spacing hole outside be set with sheath；Spacer is provided with the top of steel ball seat, the spacer is positioned at upper Between pull bar and lower pull bar and installed in the upper of upper connecting rod, the top of the spacer contacts when upper connecting rod is fully extended to be protected On the bottom of set upper side, the steel ball is caught in stopper slot and the second spacing hole simultaneously under upper connecting rod stretching during pull bar simultaneously locking Interior, the steel ball skids off when pull bar unlocks under upper connecting rod retraction from stopper slot to be snapped onto in solution locked groove；

The gear adjusting mechanism includes gear seat, gear spring and bolt, the top of the drawhead and drop-down The lower end of bar is fixedly connected, and the gear seat is arranged on the left and right sides of drawhead and is provided with gear in the side towards drawhead Projection, the bottom of the drawhead is cylinder shape, and the left and right ends of roller are respectively provided with the gear with gear male cooperation Groove, the gear spring is located in the roller and its left and right ends is connected with gear seat respectively, the bottom of the draw-bar seat Be fixed on vehicle frame, the top of the draw-bar seat be it is U-shaped, the drawhead positioned at it is described it is U-shaped in, the bolt from it is right extremely A left side sequentially passes through the upper right of draw-bar seat, the gear seat on the right side of drawhead, the right side of drawhead, gear spring, drawhead The upper left-hand of gear seat, draw-bar seat on the left of left side, drawhead is connected with nut, the gear seat be enclosed on bolt and In gear groove on the raised insertion drawhead of gear thereon, rotated with drawhead around bolt, and in gear bullet It is enclosed on bolt and can be rotated around bolt along the side-to-side movement of bolt axial direction, the drawhead in the presence of spring.

The beneficial effects of the utility model are mainly manifested in：It is easy to store, it is easy to use.

Brief description of the drawings

Fig. 1 is explosive view of the present utility model.

Fig. 2 is that upper connecting rod of the present utility model pulls out simultaneously lockup state schematic diagram.

Fig. 3 is Fig. 2 side view.

Fig. 4 is the enlarged drawing of I in Fig. 3.

Fig. 5 is upper connecting rod retraction released state schematic diagram of the present utility model.

Fig. 6 is Fig. 5 side view.

Fig. 7 is the enlarged drawing of J in Fig. 6.

Embodiment

The utility model is further described below in conjunction with the accompanying drawings.

1~Fig. 7 of reference picture, a kind of steel ball drag link mechanism, including handle, upper connecting rod 2, lower pull bar 3, telescoping mechanism, button 24th, gear adjusting mechanism and draw-bar seat 20, the upper end of the upper connecting rod 2 is fixedly connected with the handle, under the upper connecting rod 2 End is arranged in the lower pull bar 3 by what telescoping mechanism can stretch up and down, and the lower end of the lower pull bar 3 is pacified by drawhead 33 On draw-bar seat 20；

The telescoping mechanism includes push rod 25, steel ball seat 28, steel ball 38, holds out against spring 30 and spring base 31, the push rod 25 in the upper connecting rod 2, and the upper end of the push rod 25 is connected with button 24, and the button 24 is located at upper connecting rod 2 and installed At handle, the lower end of the push rod 25 is fixed with steel ball seat 28, and the spring base 31 is located at the lower section of the steel ball seat and peace In upper connecting rod 2, the upper end for holding out against spring 30 is connected with steel ball seat 28, and the lower end for holding out against spring 30 is arranged on bullet On spring abutment 31, the steel ball seat 28 is respectively equipped with from top to bottom solves locked groove and stopper slot, and front and rear the two of the lower end of the upper connecting rod 2 Side is respectively provided with steel ball 38 and is caught in the first spacing spacing hole, is set respectively on the front and rear sides of the upper end of the lower pull bar 3 Have the second spacing hole corresponding with the first spacing hole, the upper end of the lower pull bar 3 at the second spacing hole outside be set with sheath 32； Spacer 29 is provided with the top of steel ball seat 28, the spacer 29 is located between upper connecting rod 2 and lower pull bar 3 and installed in pull-up Bar 2 it is upper, the top of the spacer 29 is contacted when upper connecting rod 2 is fully extended on the bottom of the upper end of sheath 32, the steel Pearl 38 is caught in stopper slot and the second spacing hole simultaneously under the stretching of upper connecting rod 2 during the simultaneously locking of pull bar 3, and the steel ball 38 is pulling up Skid off and snap onto in solution locked groove from stopper slot when pull bar unlocks under the retraction of bar 2；

The gear adjusting mechanism includes gear seat 35, gear spring 34 and bolt 36, the drawhead 33 it is upper Portion is fixedly connected with the lower end of lower pull bar 3, and the gear seat 35 is arranged on the left and right sides of drawhead and towards drawhead 33 Side be provided with that gear is raised, and the bottom of the drawhead 33 is cylinder shape, and the left and right ends of roller are respectively provided with and shelves The gear groove of position male cooperation, the gear spring 34 is located in the roller and its left and right ends connects with gear seat 35 respectively Connect, the bottom of the draw-bar seat 20 is fixed on vehicle frame, and the top of the draw-bar seat 20 is U-shaped, and the drawhead 33 is located at institute State in U-shaped, the bolt 36 sequentially passed through from right-to-left the upper right of draw-bar seat 20, the gear seat on the right side of drawhead, The right side of drawhead 20, gear spring 34, the left side of drawhead 33, the gear seat on the left of drawhead, the top of draw-bar seat 20 are left Side is connected with nut 37, and the gear seat 35 is fixed on the shelves on the raised insertion drawhead of gear on bolt 36 and thereon In the groove of position, rotated with drawhead around bolt, and along bolt, axially left and right is transported in the presence of gear spring Dynamic, the drawhead 33 is enclosed on bolt 36 and can rotated around bolt.

In the present embodiment, spacer 29 is provided with two, is fixed on upper connecting rod 2, is moved together with upper connecting rod 2, is The device for preventing upper connecting rod 2 to be drawn out from lower pull bar 3, it is between upper connecting rod 2 and lower pull bar 3, by withstanding the lower top of pull bar 3 Sheath come it is spacing.

Operation principle of the present utility model is：

This drag link mechanism is made up of upper connecting rod assembly and lower rod assembly two parts, wherein upper connecting rod assembly insertion drop-down Motion is pulled and pushed in bar 3, upper connecting rod assembly is fixed on after being fastened by preceding handle 26 and rear handle 27 with button 24 by rivet On pull bar 2, button 24 is connected with push rod 25.Push rod 25 be arranged on the upper end of steel ball seat 28 circular hole in, its press by Steel ball 38 is converted to released state from lockup state for promoting steel ball seat 28 to move downward during button 24, and be fixed on upper connecting rod The spring base 31 of bottom is jacked up steel ball seat 28 in the lock position of steel ball 38 by being placed on its Inner spring 30 that holds out against；Now, As long as then steel ball 38 while being caught in not pressing button 24 in the first spacing hole of upper connecting rod 2 and the second spacing hole of lower pull bar 3, Prevent two pull bars from moving.The spacer 29 of the bottom outside of upper connecting rod 2 is also secured to, also just withstands on and is fixed on lower pull bar 3 On the upper end bottom of sheath 32 on the outside of the mouth of pipe, play a part of preventing from pulling；And each part is each attached to upper connecting rod 2 above It is interior, moved with upper connecting rod 2.Lower rod assembly is the drawhead 33 of the sheath 32 and lower end fixation by being fixed thereon end outside With the gear spring 34 mounted in its Inner, the gear seat 35 at the both ends of gear spring 34 is together connected by bolt 36 and nut 37 In draw-bar seat 35.

During opening, handle lifting upwards is caught, drives upper connecting rod always integral upwards, until the steel in embedded upper connecting rod 2 Pearl 38 is caught in the second spacing hole of the lower upper end of pull bar 3, plays position-limiting action.During folding, first pressing button 24 pushes away push rod 25 Dynamic steel ball seat 28 moves downward, and steel ball 38 is slided into out of steel ball seat 28 stopper slot in solution locked groove so that steel ball 38 from Deviate from second spacing hole of lower pull bar 3, release lockup state.Handle is pushed down on simultaneously on earth again, and release button 24.

There is the raised gear groove match with 33 corresponding side of drawhead of a circle gear in the outside of two gear seats 35, and The withstanding on together tightly in the presence of gear spring 34 between two gear seats 35.During rotating tension bar, it is connected to lower pull bar 3 Drawhead 33 together drives its Inner gear spring 34 and the gear seat 35 at both ends to be rotated together around bolt 36.And pull bar Seat 20 does not rotate due to being integrally fixed on vehicle frame sill, therefore in the presence of gear spring 34, the shelves on gear seat 35 Position is raised with being rotated into gear groove different on drawhead 33, so that pull bar stops in different rotation positions.

Claims (1)

1. A kind of 1. steel ball drag link mechanism, it is characterised in that：Adjusted including handle, upper connecting rod, lower pull bar, telescoping mechanism, button, gear Mechanism and draw-bar seat are saved, the upper end of the upper connecting rod is fixedly connected with the handle, and the lower end of the upper connecting rod passes through telescopic machine What structure can stretch up and down is arranged in the lower pull bar, and the lower end of the lower pull bar is arranged on draw-bar seat by drawhead；

   The telescoping mechanism includes push rod, steel ball seat, steel ball, holds out against spring and spring base, and the push rod is located at the upper connecting rod Interior, the upper end of the push rod and button connects, the button are located in upper connecting rod and at handle, the lower end of the push rod Steel ball seat is fixed with, the spring base is located at the lower section of the steel ball seat and in upper connecting rod, described to hold out against the upper of spring End is connected with steel ball seat, and the lower end for holding out against spring mounts elastically, and the steel ball seat is respectively equipped with solution from top to bottom Locked groove and stopper slot, the front and rear sides of the lower end of the upper connecting rod are respectively provided with steel ball and are caught in the first spacing spacing hole, The second spacing hole corresponding with the first spacing hole is respectively equipped with the front and rear sides of the upper end of the lower pull bar, the lower pull bar Upper end at the second spacing hole outside be set with sheath；Spacer is provided with the top of steel ball seat, the spacer is located at upper connecting rod Between lower pull bar and installed in the upper of upper connecting rod, the top of the spacer is contacted on sheath when upper connecting rod is fully extended On the bottom at end, the steel ball is caught in stopper slot and the second spacing hole simultaneously under upper connecting rod stretching during pull bar simultaneously locking, institute State steel ball under upper connecting rod retraction pull bar unlock when skidded off from stopper slot snap onto solution locked groove in；

   The gear adjusting mechanism includes gear seat, gear spring and bolt, the top of the drawhead and lower pull bar Lower end is fixedly connected, and the gear seat is installed in the left and right sides of drawhead and convex provided with gear in the side towards drawhead Rise, the bottom of the drawhead is cylinder shape, and the left and right ends of roller are respectively provided with recessed with the gear of gear male cooperation Groove, the gear spring is located in the roller and its left and right ends is connected with gear seat respectively, and the bottom of the draw-bar seat is consolidated Be scheduled on vehicle frame, the top of the draw-bar seat be it is U-shaped, the drawhead positioned at it is described it is U-shaped in, the bolt is from right-to-left Sequentially pass through the upper right of draw-bar seat, the gear seat on the right side of drawhead, right side, gear spring, the left side for drawhead of drawhead The upper left-hand of gear seat, draw-bar seat on the left of side, drawhead is connected with nut, and the gear seat is enclosed on bolt and it On the raised insertion drawhead of gear on gear groove in, rotated with drawhead around bolt, and in gear spring In the presence of be enclosed on bolt and can be rotated around bolt along the side-to-side movement of bolt axial direction, the drawhead.