CN203471721U

CN203471721U - Screwing tool

Info

Publication number: CN203471721U
Application number: CN201320559401.1U
Authority: CN
Inventors: 董智斌; 张祥; 程康; 周志勇; 冯旭东; 李少军; 杨麟
Original assignee: China Aviation Lithium Battery Co Ltd
Current assignee: China Lithium Battery Technology Co Ltd
Priority date: 2013-09-10
Filing date: 2013-09-10
Publication date: 2014-03-12
Anticipated expiration: 2023-09-10

Abstract

The utility model relates to a screwing tool. The screwing tool comprises a locating sleeve, a handle is assembled in the locating sleeve in a rotating mode, the handle is provided with fastening ends which are used for being matched with an element to be installed in a rotation-stopping and plug-in mounting mode, a circumferential locating structure is arranged on one of the locating sleeve and the handle, a stopping structure is arranged on the other one of the locating sleeve and the handle, the circumferential locating structure is provided with locating portions with angles set at intervals in the circumferential direction, and the stopping structure is provided with stopping portions used for being matched with the locating portions. According to the screwing tool, the locating portions with the angles set at intervals and of the circumferential locating structure are matched with the stopping portions of the stopping structure in a stopping mode to limit the rotation angle of the handle so as to control the rotation angle of the element to be installed, and therefore the screwing degree between the element to be installed and an installation hole is made to be controllable.

Description

A kind of frock that screws

Technical field

The utility model relates to a kind of frock that screws.

Background technology

Along with being widely used of lithium battery, the security of lithium battery also becomes people's question of common concern, lithium battery in use likely occurs that battery temperature raises, thereby make its inner electrolyte decomposition produce a large amount of gas, along with making battery container, the rising of gas pressure occurs expanding, when serious, even can there is battery container explosion and jeopardize personal safety, therefore on lithium battery casing, be provided with the installing hole for mounting safety valve, safety valve is unnecessary gas to be discharged when battery container internal gas pressure increases in order to guarantee, to avoid pressure excessive and make the battery container even explosion of expanding, guarantee that ambient atmos can not enter inside battery and affect battery performance simultaneously, therefore in setting safety valves should degree of tightness moderate, can guarantee that inner unnecessary gas discharges smoothly, can guarantee that again ambient atmos can not infiltrate inside battery.

Utility model content

The purpose of this utility model be propose a kind of anglec of rotation controlled screw frock.

For addressing the above problem, the technical solution adopted in the utility model is:

A kind of frock that screws, comprise positioning sleeve, in described positioning sleeve, be rotatably equipped with handle, described handle has the fastening end for coordinating with part spline plug-in mounting to be installed, in one of them of described positioning sleeve or handle, be provided with circumferential positioning structure, be provided with Stop structure on another, described circumferential positioning structure has in the location division that makes progress interval set angle week, and described Stop structure has the stop section for coordinating with described location division.

Described circumferential positioning structure is the spacing slotted hole extending along rotatable handle direction upwards arranging in described positioning sleeve week, described spacing slotted hole has and the corresponding length of described rotatable handle angle, described location division is spacing slotted hole both ends along its length, described Stop structure be on described handle, arrange can be along the limited block of described spacing slotted hole guiding movement, described stop section is the respective side that described limited block coordinates with the both ends block of described spacing slotted hole.

Also comprise the bearing being set on handle, the inner ring of described bearing and described handle interference fit, the outer ring of described bearing and the endoporus interference fit of described positioning sleeve.

Described positioning sleeve comprises with the sleeve part of described bearing outer ring interference fit and extends axially the registration arm of setting along it, described registration arm is two that sleeve part is radially oppositely arranged, and two registration arm have for the interior concaved circular cambered surface with corresponding installing hole outer peripheral face guide-localization.

Described fastening end is that relative spacing is arranged on two on handle.

A kind of frock that screws the utility model proposes, the fastening end of handle coordinates with the respective aperture spline of part to be installed, rotary handle, handle drives part to be installed to rotate and enters in installing hole, when handle turns to set angle, the location division block of the stop section of Stop structure and circumferential positioning structure is spacing and stop handle to continue rotation, now just represents that part to be installed is in place.The utility model adopts the anglec of rotation of the location division of circumferential positioning structure interval set angle setting and the stop section block engagement limits handle of Stop structure, thereby control the anglec of rotation of part to be installed, make to tighten between part to be installed and installing hole degree controlled.

Further, circumferential positioning structure adopts the spacing slotted hole with preseting length, and Stop structure adopts position-limitting pin, simple in structure, be easy to processing and fabricating.

Further, between handle and positioning sleeve, bearing is set, handle rotates more flexible.

Further, adopt two registration arm with interior concaved circular cambered surface that are oppositely arranged and corresponding installing hole guide-localization on positioning sleeve, guaranteed to be mounted the perpendicularity of part and installing hole, guarantee connection reliability.

Further, adopt two fastening axle heads to coordinate with two technique plug-in mountings on safety valve, be convenient to realize the spline plug-in mounting of handle and safety valve, easy to operate.

Accompanying drawing explanation

Fig. 1 is a kind of structural representation that screws the embodiment of frock of the present utility model;

Fig. 2 is the contour structures schematic diagram of Fig. 1.

The specific embodiment

A kind of embodiment that screws frock of the present utility model: as shown in Figure 1, the present embodiment mainly adopts this to screw frock at the safe valve opening spinning safety valve of lithium battery, this screws frock and comprises positioning sleeve 3, positioning sleeve 3 comprises that be radially oppositely arranged with the sleeve part of bearing outer ring interference fit and sleeve part two along the axially extended registration arm of sleeve part, registration arm has with corresponding safe valve opening outer peripheral face adaptation with the interior concaved circular cambered surface to positioning sleeve guide-localization, sleeve part and two registration arm are wholely set, in the endoporus of sleeve part, interference fit has bearing 4, in the inner ring of bearing 4, interference is coated with handle, handle comprises the handle head 1 for hand-held rotation, handle head 1 one end offers blind hole, in blind hole, be coated with connector 2, connector 2 is connected by bolt spline with handle head 1, connector is relatively set with two away from handle head one end and enters for plug-in mounting the fastening axle head 6 that corresponding safety valve fabrication hole coordinates with safety valve spline, between two fastening axle heads 6, be provided with guiding projection 7, guiding projection 7 leads plug-in mounting so that fastening axle head 6 is aimed at plug-in mounting with the fabrication hole on safety valve to be installed for the corresponding groove with on safety valve to be installed, on sleeve part side face, offer the spacing slotted hole extending along handle rotation direction, spacing slotted hole has the location division of interval set angle, location division is spacing slotted hole two ends along its length, on connector 2, be fixedly installed to penetrate in spacing slotted hole along spacing slotted hole guiding movement and with the location division block at spacing slotted hole two ends and coordinate to limit the position-limitting pin 5 of handle rotational angle, the pin-and-hole interference fit arranging on position-limitting pin 5 and connector.

During use, rotary handle makes the location division block of position-limitting pin on connector 25 and wherein one end of the spacing slotted hole of positioning sleeve 3, by corresponding groove guide effect on guiding projection 7 and safety valve to be installed, two of handle fastening axle heads 6 are inserted in the corresponding fabrication hole on safety valve to be installed, thereby connector is coordinated with treating safe safety valve spline, the inner arc surface of two registration arm and the outer peripheral face guide-localization of safe valve opening on lithium battery casing of positioning sleeve 3 are coordinated, safety valve aligns with safe valve opening, rotary handle head 1, handle head 1 drives the safety valve that spline coordinates with it to rotate by connector 2 and fastening axle head 6, position-limitting pin 5 is along the spacing slotted hole guided rotation on positioning sleeve 3, external screw thread on safety valve is threaded with the screwed hole of safe valve opening, in the continuous precession screwed hole of safety valve, when position-limitting pin 5 coordinates with the location division block of other one end of spacing slotted hole, handle head 1 stops operating, safety valve is in place.

The present embodiment is to adopt this to screw frock safety valve is tightened in the safe valve opening of lithium battery casing, also can be used in being connected of other thread spindles and screwed hole in other embodiment of the present utility model.

Circumferential positioning structure is the spacing slotted hole arranging on positioning sleeve in the present embodiment, location division is two ends of spacing slotted hole length direction, Stop structure is the position-limitting pin arranging on connector, the limiting block stop corresponding outer peripheral face that a pin coordinates with location division block that is limited, on the positioning shaft sleeve that also circumferential positioning structure can be arranged in other embodiment of the present utility model on connector and Stop structure is arranged, Stop structure also can adopt limited block is set on connector, limited block can be along the radial expansion of connector, and the stopper slot that corresponding circumferential positioning structure adopts the interval set angle that makes progress in positioning sleeve week to arrange, limited block and positioning sleeve internal perisporium are rotatably assorted, when limited block rotates, to the stopper slot of positioning sleeve and after being embedded in stopper slot, coordinate with stopper slot block and stop handle to rotate.

Fastening axle head has two and be oppositely arranged on connector end in the present embodiment, in other embodiment of the present utility model, also can be set to one, and it is coordinated with the corresponding fabrication hole spline of safety valve to be installed, also can arrange according to actual needs more than three.

For guaranteeing handle flexible rotating, at connector, be arranged with bearing outward in the present embodiment, positioning sleeve is sleeved on bearing outer ring, and bearing also can be set in other embodiment of the present utility model, and the connector of handle and positioning sleeve gap are rotatably assorted.

Positioning sleeve comprises the axially extended registration arm along sleeve part being radially oppositely arranged of sleeve part and sleeve part in the present embodiment, also can positioning sleeve in other embodiment of the present utility model be set to have the sleeve of certain axial length, during use, make sleeve and safe valve opening outer peripheral face suit location.

In the present embodiment for ease of the quick inserting of the fabrication hole on fastening axle head and safety valve to be installed, being provided with the guiding projection coordinating with groove guiding on safety valve to be installed between two fastening axle heads, in other embodiment of the present utility model, also guiding projection can be set; Or guiding projection is arranged on safety valve to be installed, the groove coordinating with this guiding projection guiding is set between two fastening axle heads at this handle accordingly.

Claims

1. one kind screws frock, it is characterized in that: comprise positioning sleeve, in described positioning sleeve, be rotatably equipped with handle, described handle has the fastening end for coordinating with part spline plug-in mounting to be installed, in one of them of described positioning sleeve or handle, be provided with circumferential positioning structure, be provided with Stop structure on another, described circumferential positioning structure has in the location division that makes progress interval set angle week, and described Stop structure has the stop section for coordinating with described location division.

2. the frock that screws according to claim 1, it is characterized in that: described circumferential positioning structure is the spacing slotted hole extending along rotatable handle direction upwards arranging in described positioning sleeve week, described spacing slotted hole has and the corresponding length of described rotatable handle angle, described location division is spacing slotted hole both ends along its length, described Stop structure be on described handle, arrange can be along the limited block of described spacing slotted hole guiding movement, described stop section is the respective side that described limited block coordinates with the both ends block of described spacing slotted hole.

3. the frock that screws according to claim 1 and 2, is characterized in that: also comprise the bearing being set on handle, the inner ring of described bearing and described handle interference fit, the outer ring of described bearing and the endoporus interference fit of described positioning sleeve.

4. the frock that screws according to claim 3, it is characterized in that: described positioning sleeve comprises with the sleeve part of described bearing outer ring interference fit and extends axially the registration arm of setting along it, described registration arm is two that sleeve part is radially oppositely arranged, and two registration arm have for the interior concaved circular cambered surface with corresponding installing hole outer peripheral face guide-localization.

5. the frock that screws according to claim 3, is characterized in that: described fastening end is that relative spacing is arranged on two on handle.