CN201752424U

CN201752424U - Knife blade locking device for swinging saw

Info

Publication number: CN201752424U
Application number: CN2010201903633U
Authority: CN
Inventors: 蒋志明; 鲁仁义
Original assignee: SHANGHAI XINSHENG PHOTOELECTRIC TECHNOLOGY Co Ltd
Current assignee: SHANGHAI XINSHENG PHOTOELECTRIC TECHNOLOGY Co Ltd
Priority date: 2010-05-12
Filing date: 2010-05-12
Publication date: 2011-03-02
Anticipated expiration: 2020-05-12

Abstract

The utility model provides a knife blade locking device for a swinging saw, which comprises a swinging shaft and a swinging sleeve sheathed at the outer part of the swinging shaft. The knife blade locking device further comprises a middle sliding sleeve, an inner sliding sleeve, an outer sliding sleeve and a pressing rod; the top end of the middle sliding sleeve is fixedly connected with the bottom end of the swinging sleeve, two oblique guide grooves with the same curvature are symmetrically arranged on the surface of the middle sliding sleeve, position-limiting holes are arranged at the top ends of the guide grooves, and an end cover is fixedly connected at the bottom end of the middle sliding sleeve; the inner sliding sleeve is arranged at the inner part of the middle sliding sleeve, and ring-shaped groove is formed on the outer surface of the inner sliding sleeve; the outer sliding sleeve is sheathed at the outer part of the middle sliding sleeve, and two vertical grooves extending along the axial direction are symmetrically arranged on the inner surface of the outer sliding sleeve; the pressing rod which sequentially penetrates through a through hole in the swinging shaft and the top end of the middle sliding sleeve comprises a first oppressing end and a second oppressing end; the guide grooves, the ring-shaped groove and the vertical grooves are arranged in a clamping manner to form a slippage track in which a steel ball is arranged; and a spring is sheathed on the pressing rod. As the knife blade locking device adopts the rotary sheathing method to open and close the pressing rod, spare parts are simplified; moreover, the knife blade locking device is firmer, can not become loosened, and can not be deformed or fail to use under the action of an external force in the using process.

Description

Goose saw insert retention device

Technical field

This utility model relates to a kind of armarium, refers to a kind of goose saw insert retention device that is used for surgical operation especially.

Background technology

In the surgical operation of cutting bone, often can use goose saw.During use, on the goose saw body, blade is installed, is driven the blade swing by drive mechanism and cut.

Need armrest to pin button in sheet always and do not put, just can carry out fixturing blade, in this kind button lock prior art, the locking of blade all is to take the button form, and individual button is arranged below locking device.Tightly install the internal structure relative complex at the clamping cutter.Loaded down with trivial details relatively in the production installation process.Especially fixture and support bar are being understood generation deformation even fracture because of external force (for example: overexert, apparatus is dropped, and beats).Bring unnecessary consequence to operation.Inner slide block device may cause stuck, in use also more loaded down with trivial details after long-time the use.

Summary of the invention

The technical problems to be solved in the utility model is to provide a kind of novel goose saw insert retention device, has changed button form in the past, has simplified each parts, makes it more firm, and is not loosening, improved the stability of parts; In use can be subjected to certain external force also can not cause being out of shape or can not using.

For solving the problems of the technologies described above, this utility model provides a kind of goose saw insert retention device, comprise a balance staff and the swing set that is sheathed on described balance staff outside, described balance staff is connected with the goose saw body by described swing set, and a through hole runs through described balance staff vertically, described locking device also further comprises: sliding sleeve in, the top of sliding sleeve is fixed in the bottom of described swing set in described, sliding sleeve surface symmetry offers two oblique gathering sills that curvature is identical in described, the top of described gathering sill is provided with spacing hole, and the bottom of described middle sliding sleeve also is connected with an end cap; One inner sliding sleeve is arranged at described middle sliding sleeve inside, and described inner sliding sleeve outer surface is formed with a cannelure; One outer sliding sleeve, be sheathed on described in sliding sleeve outside and be located in described between the top and end cap of sliding sleeve, described outer sliding sleeve inner surface symmetry offers two vertical slots that extend vertically; One depression bar runs through the interior through hole of described balance staff and the top of middle sliding sleeve successively, and the top that described depression bar upper end extends upward described balance staff forms one first pressure side, and the top that described depression bar lower ends downward is extended described middle sliding sleeve forms one second pressure side; Wherein: described gathering sill, cannelure and vertical slot folder are established the formation sliding rail, and a steel ball is set in described sliding rail; Through-hole diameter in the described balance staff changes and forms a step surface, and one first spring housing is located on the described depression bar, and an end of described first spring is resisted against on the described step surface, and the other end is resisted against on described second pressure side.

Than the button form, this utility model adopts the rotation set form to open closed depression bar; By the rotation outer sliding sleeve, steel ball makes inner sliding sleeve move to the top along the oblique orbiting motion of gathering sill, withstand the depression bar bottom and make depression bar move up, when steel ball arrives the gathering sill top, embed in the spacing hole, it is fixed can not slide voluntarily, carry out blade and install; After installing, the reverse rotation outer sliding sleeve, steel ball moves down along track, and depression bar is oppressed by first spring, is locked at the bottom, makes blade fix.This rotation set form has been simplified each parts, makes it more firm, and is not loosening.Improved the stability of parts.

Further improvement of the utility model is that the bottom of described inner sliding sleeve is formed with a spring base, is equipped with one second spring in the described spring base, and an end of described second spring is resisted against the end face of described spring base, and the other end is resisted against on the described end cap; The bottom of the gathering sill of sliding sleeve is provided with spacing hole in described; By the effect of this second spring, make outer sliding sleeve power that obtains to borrow in last outstanding process make that the rotation feel is better, and spacing hole is set by bottom at gathering sill, fix inner sliding sleeve and make it not mobile.

Description of drawings

Fig. 1 is a locking device installation diagram of the present utility model;

Fig. 2 is the balance staff front schematic view of this utility model locking device;

Fig. 3 is the middle sliding sleeve front schematic view of this utility model locking device;

Fig. 4 is the inner sliding sleeve front schematic view of this utility model locking device;

Fig. 5 a is the positive cut-away illustration of the outer sliding sleeve of this utility model locking device;

Fig. 5 b is the outer sliding sleeve vertical view of this utility model locking device; And

Fig. 6 is the depression bar front schematic view of this utility model locking device.

The specific embodiment

Below in conjunction with accompanying drawing this utility model is further described.

At first consult shown in Figure 1ly, locking device 1 of the present utility model mainly comprises swing set 10, balance staff 20, and middle sliding sleeve 30, inner sliding sleeve 40, outer sliding sleeve 50 and depression bar 60, wherein:

Swing set 10 is sheathed on balance staff 20 outsides, and balance staff 20 is connected with the goose saw body by swing set 10; Cooperate shown in Figure 2ly, balance staff 20 tops are formed with the bigger disk body of a diameter 21, one through holes 22 balance staff 20 vertically, thus these through hole 22 upper diameter are less and lower diameter big through hole 22 in formation one step surface 221;

Cooperate middle sliding sleeve 30 tops shown in Figure 3 to be formed with bigger disk body 31, and be fixed in the bottom of swing set 20 by this disk body 31, surperficial symmetry at middle sliding sleeve 30 offers two oblique gathering sills 32,33 that curvature is identical, each bar gathering sill all has the higher top in a lower bottom, a position and a position, on the top of gathering sill 32,33, be provided with spacing hole 321,331, also be connected with an end cap 35 in the bottom 34 of middle sliding sleeve 30;

Cooperate shown in Figure 4, inner sliding sleeve 40 be arranged at described in sliding sleeve 30 inside, be formed with a cannelure 41 at inner sliding sleeve 40 outer surfaces;

Cooperate shown in Fig. 5 a, the b, outer sliding sleeve 50 is sheathed on middle sliding sleeve 30 outsides, and is located between middle sliding sleeve 30 vertical disk bodies 31 and the end cap 35, offers two

vertical slots

52,53 that extend vertically in outer sliding sleeve 50 inner surface symmetries;

Above-mentioned gathering sill 32, cannelure 41 and vertical slot 52 folders are established and formed first sliding rail, and are same, and gathering sill 33, cannelure 41 and vertical slot 53 folders are established and formed second sliding rail, are respectively arranged with

steel ball

36,37 in two sliding rails;

Cooperate shown in Figure 6 again, depression bar 60 runs through the through hole 22 in the balance staff 20 and the top of middle sliding sleeve 30 successively, the top that the upper end of depression bar 60 extends upward balance staff 20 forms one first pressure side 61, and the top of sliding sleeve 30 formed one second pressure side 62 during the lower ends downward of depression bar 60 was extended; The upper end that is arranged with one first spring, 63, the first springs 63 on depression bar 60 is resisted against step surface 221, and lower end abutment is in the upper surface of second pressure side 62;

As better embodiment of the present utility model, the bottom of inner sliding sleeve 40 is formed with a spring base 42, the upper end that is equipped with one second spring, 43, the second springs 43 in this spring base 42 is resisted against the lower end abutment of end face 421, the second springs 43 of spring base 42 in the upper surface of end cap 35; And this moment, spacing hole 322,332 is set in the bottom of gathering sill 32,33.

Locking device 1 of the present utility model in use, at first drive steel ball 36 to first direction rotation outer

sliding sleeve

50,37 move in sliding rail, along gathering sill 32,33 oblique track moves upward, thereby driving inner sliding sleeve 40 moves and then makes inner sliding sleeve 40 tops withstand second pressure side 62 of depression bar 60 to the top, promotion depression bar 60 moves up and oppresses first spring 63, thereby cause first pressure side 61 to break away from balance staff 20 vertical disk bodies 21, when

steel ball

36,37 move to gathering sill 32, during 33 tops, embed spacing hole 321, in 331, guaranteeing that depression bar 60 is fixing can not slide voluntarily, and the installing that can carry out blade 70 this moment is gone in the slit between first pressure side 61 and the disk body 21; Push away on whole in the process, because the spring force of second spring 43 makes outer sliding sleeve 50 obtain in slip by means of power, it is better to rotate more comfortable feel; After blade 70 installings finish, reverse rotation outer sliding sleeve 50 carries out inverse operation, make

steel ball

36,37 break away from spacing hole 321,331, this moment, first pressure side 61 under the spring force effect of first spring 63 was pullled downwards, and blade 70 is clamped between first pressure side 61 and the disk body 21; When

steel ball

36,37 moves to gathering sill 32,33 bottoms, embed in the spacing hole 322,332, can guarantee the fixing of inner sliding sleeve 40, be not subjected to the spring force of second spring 43 and move.

Claims

1. goose saw insert retention device, comprise a balance staff and the swing set that is sheathed on described balance staff outside, described balance staff is connected with the goose saw body by described swing set, and a through hole runs through described balance staff vertically, it is characterized in that described locking device also further comprises:

Sliding sleeve in one, the top of described middle sliding sleeve is fixed in the bottom of described swing set, and described middle sliding sleeve surface symmetry offers two oblique gathering sills that curvature is identical, and the top of described gathering sill is provided with spacing hole, and the bottom of described middle sliding sleeve also is connected with an end cap;

One inner sliding sleeve is arranged at described middle sliding sleeve inside, and described inner sliding sleeve outer surface is formed with a cannelure;

One outer sliding sleeve, be sheathed on described in sliding sleeve outside and be located in described between the top and end cap of sliding sleeve, described outer sliding sleeve inner surface symmetry offers two vertical slots that extend vertically;

One depression bar runs through the interior through hole of described balance staff and the top of middle sliding sleeve successively, and the top that described depression bar upper end extends upward described balance staff forms one first pressure side, and the top that described depression bar lower ends downward is extended described middle sliding sleeve forms one second pressure side;

Described gathering sill, cannelure and vertical slot folder are established the formation sliding rail, and a steel ball is set in described sliding rail;

Through-hole diameter in the described balance staff changes and forms a step surface, and one first spring housing is located on the described depression bar, and an end of described first spring is resisted against on the described step surface, and the other end is resisted against on described second pressure side.

2. locking device as claimed in claim 1 is characterized in that:

The bottom of described inner sliding sleeve is formed with a spring base, is equipped with one second spring in the described spring base, and an end of described second spring is resisted against the end face of described spring base, and the other end is resisted against on the described end cap;

The bottom of the gathering sill of sliding sleeve is provided with spacing hole in described.