CN205605608U

CN205605608U - Hand screw

Info

Publication number: CN205605608U
Application number: CN201620241836.5U
Authority: CN
Inventors: 闻金普
Original assignee: Zhejiang Jida Metal Co Ltd
Current assignee: Zhejiang Jida Metal Co Ltd
Priority date: 2016-03-26
Filing date: 2016-03-26
Publication date: 2016-09-28
Anticipated expiration: 2026-03-26

Abstract

The utility model discloses a hand screw, including screwhead and shank of screw, characterized by: be equipped with the fixed orifices on the screwhead, the fixed orifices fit in has the hanger plate, and hanger plate one side an organic whole is equipped with the linkage segment, and the linkage segment is in in the fixed orifices. This hand screw can screw up this screw with the hand on convenient ground.

Description

Hand screw

Technical field

This utility model relates to screw, particularly to a kind of hand screw.

Background technology

Hand screw is the class screw that need not the normal dismounting that instrument can realize screw, is generally used for needing the place of fast assembling-disassembling.

At present, the Chinese patent of Publication No. CN204175749U discloses the captive screw of a kind of fast demountable, and it includes that press-fiting swivel nut, screw, spring and hands twists suspension ring；Described press-fit be provided with straight knurling bottom swivel nut, described straight knurling part is press fit in the perforate of connected piece, and described spring housing is on screw, and described screw screws in and press-fits in swivel nut, having hands on head of screw and twist suspension ring installing hole, hands is twisted suspension ring and is connected with head of screw by described installing hole.Although the captive screw of this fast demountable can by screw-driving in the case of not use instrument, but suspension ring are arc-shaped, when hands is twisted, the lifting surface area of finger is less, it is not easy to tighten.

Utility model content

The deficiency existed for prior art, the purpose of this utility model is to provide a kind of hand screw, can easily with hands by this screw-driving.

Above-mentioned technical purpose of the present utility model has the technical scheme that a kind of hand screw, including head of screw and shank of screw, it is characterized in that: head of screw is provided with fixing hole, in fixing hole, be combined with boatswain chair, boatswain chair side is integrally formed with linkage section, and linkage section is in fixing hole.

By technique scheme, use boatswain chair to replace suspension ring, can have bigger contact area when finger contacts with boatswain chair, make finger stress the most uniform, it is provided that bigger torsion, it is simple to by this screw-driving.

Described boatswain chair can rotate along fixing hole axis, and boatswain chair is provided with when avoiding boatswain chair to rotate and produces, with head of screw, the arc groove interfered.

By technique scheme, boatswain chair can be made when need not and using boatswain chair to rotate along the axis of fixing hole, make boatswain chair and head of screw be in same plane, it is to avoid when keeping vertical state and human body to collide due to boatswain chair, cause human body by gouge.

Described linkage section face height a is more than linkage section width b, and being provided with below fixing hole conflicts with linkage section limits the shell fragment of boatswain chair slewing area.

Pass through technique scheme, when linkage section rotates together with boatswain chair, shell fragment keeps conflict state with linkage section always, owing to linkage section face height is more than linkage section width, so it is bigger due to shell fragment and linkage section end contact length when boatswain chair turns to be in same plane with head of screw, so bigger clamping stagnation power can be produced between the two, prevent further rotating of boatswain chair, simultaneously because the width of linkage section is less, so will not be with bigger clamping stagnation power when boatswain chair turns to the plane vertical with head of screw from the state parallel with head of screw, the normal rotation of boatswain chair can be realized.

Preferably, two faces that described linkage section is parallel with boatswain chair width are cambered surface.

By technique scheme, the clamping stagnation power produced between linkage section and shell fragment when boatswain chair turns to the state vertical with head of screw from the state parallel with head of screw is less, facilitates boatswain chair to rotate within the range.

Preferably, described boatswain chair is rectangle, and each angle of boatswain chair is fillet.

Pass through technique scheme, the length of boatswain chair is more than height, and boatswain chair is typically between forefinger and thumb when turning boatswain chair by hands, and makes forefinger and thumb be in the end in two faces of boatswain chair respectively, boatswain chair length can make more greatly the point of application bigger with the arm of force of shank of screw axis, it is simple to turns screw.Each angle of boatswain chair is fillet, occurs to prevent plowing from hands during scraping.

Preferably, head of screw upper surface is provided with and coordinates cross recess or the flat recess turning screw with screwdriver.

By technique scheme, screwdriver can be used to be back-outed by screw when using boatswain chair not back-outed by screw.

Preferably, described shank of screw head is provided with thread segment, and thread segment diameter is more than the diameter of shank of screw.

By technique scheme, the diameter of thread segment, more than the diameter of shank of screw, can increase the intensity of thread segment, it is to avoid cause thread segment damaged owing to thread segment is less, it is ensured that bonding strength.

In sum, this utility model in contrast to having the beneficial effect that of prior art and turns this screw by use boatswain chair, adds the contact area of hands and boatswain chair, can provide bigger torsion when turning this screw, it is simple to turning of screw.Linkage section is set in the side of boatswain chair simultaneously, and arc groove is set in boatswain chair, make boatswain chair can rotate on head of screw, the storage of boatswain chair when conveniently being not required to turn boatswain chair, the lower section of this external fixing hole arranges shell fragment, limiting the slewing area of boatswain chair, the screw thread prevented in transportation on boatswain chair and screw interferes destruction screw thread.

Accompanying drawing explanation

Fig. 1 is the axonometric chart of embodiment；

Fig. 2 is the front view of embodiment boatswain chair;

Fig. 3 is the sectional view in Fig. 2 at A-A；

Fig. 4 is the outline drawing at visual angle, embodiment top.

Reference: 11, head of screw；111, shell fragment；12, shank of screw；121, thread segment；2, boatswain chair；21, linkage section；22, arc groove；23, cambered surface；3, cross recess.

Detailed description of the invention

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

This specific embodiment is only to explanation of the present utility model; it is not to restriction of the present utility model; the present embodiment can be made after reading this specification by those skilled in the art as required does not has the amendment of creative contribution, but as long as all being protected by Patent Law in right of the present utility model.

As it is shown in figure 1, a kind of hand screw, including head of screw 11 and shank of screw 12, head of screw 11 is provided with fixing hole, is combined with boatswain chair 2 in fixing hole, and boatswain chair 2 side is integrally formed with linkage section 21, and linkage section 21 is in fixing hole.So it is set using boatswain chair 2 and replaces suspension ring, when finger contacts with boatswain chair 2, can have bigger contact area, make finger stress the most uniform, it is provided that bigger torsion, it is simple to by this screw-driving.

Boatswain chair 2 can rotate along fixing hole axis simultaneously, boatswain chair 2 is provided with when avoiding boatswain chair 2 to rotate and produces, with head of screw 11, the arc groove 22 interfered, boatswain chair 2 can be made to rotate along the axis of fixing hole when need not and using boatswain chair 2, boatswain chair 2 and head of screw 11 is made to be in same plane, avoid due to boatswain chair 2 keep vertical state and human body to collide time, cause human body by gouge.

The most as shown in Figures 2 and 3, linkage section 21 face height a is set greater than linkage section 21 width b, and being provided with below fixing hole conflicts with linkage section 21 limits the shell fragment 111 of boatswain chair slewing area.So arrange, when linkage section 21 rotates together with boatswain chair 2, shell fragment 111 keeps conflict state with linkage section 21 always, owing to linkage section 21 face height is more than linkage section 21 width, so it is bigger due to shell fragment 111 and linkage section 21 end contact length when boatswain chair 2 turns to be in same plane with head of screw 11, so bigger clamping stagnation power can be produced between the two, prevent further rotating of boatswain chair 2, simultaneously because the width of linkage section 21 is less, so will not be with bigger clamping stagnation power when boatswain chair 2 turns to the plane vertical with head of screw 11 from the state parallel with head of screw 11, the normal rotation of boatswain chair 2 can be realized.

As shown in Figure 1 and Figure 4, two faces that linkage section 21 is parallel with boatswain chair 2 width are cambered surface 23.So arranging, the clamping stagnation power produced between linkage section 21 and shell fragment 111 when boatswain chair 2 turns to the state vertical with head of screw 11 from the state parallel with head of screw 11 is less, facilitates boatswain chair 2 to rotate within the range.Boatswain chair 2 state of being kept essentially stationary of shell fragment 111 when rotating simultaneously, prevents shell fragment 111 from happening over and over again deformation and causes shell fragment 111 to fracture not having position-limiting action.

As in figure 2 it is shown, boatswain chair 2 is preferably rectangle, each angle of boatswain chair 2 is disposed as fillet.Boatswain chair 2 is rectangle, the length of boatswain chair 2 is more than height, typically boatswain chair 2 is between forefinger and thumb when hands turns boatswain chair 2, and make forefinger and thumb be in the end in 2 two faces of boatswain chair respectively, boatswain chair 2 length can make more greatly the point of application bigger with the arm of force of shank of screw 12 axis, it is simple to turns screw.Each angle of boatswain chair 2 is fillet, occurs to prevent plowing from hands during scraping.

The most as shown in Figure 4, head of screw 11 upper surface is provided with and coordinates the cross recess 3 turning screw with screwdriver.So arrange, screwdriver can be used to be back-outed by screw when using boatswain chair 2 not back-outed by screw.On head of screw 11 can also be flat recess or flat recess and notch that cross recess 3 combines.

Shank of screw 12 head is provided with thread segment 121 simultaneously, and thread segment 121 diameter is more than the diameter of shank of screw 12.So arrange, the intensity of thread segment 121 can be increased, it is to avoid cause thread segment 121 damaged owing to thread segment 121 is less, it is ensured that bonding strength.

The above is only exemplary embodiment of the present utility model, and not for limiting protection domain of the present utility model, protection domain of the present utility model is determined by appended claim.

Claims

1. a hand screw, including head of screw (11) and shank of screw (12), it is characterized in that: head of screw (11) is provided with fixing hole, boatswain chair (2) it is combined with in fixing hole, boatswain chair (2) side is integrally formed with linkage section (21), linkage section (21) is in fixing hole, described boatswain chair (2) can rotate along fixing hole axis, boatswain chair (2) is provided with when avoiding boatswain chair (2) to rotate and produces, with head of screw (11), the arc groove (22) interfered, described linkage section (21) face height a is more than linkage section (21) width b, being provided with below fixing hole conflicts with linkage section (21) limits the shell fragment (111) of boatswain chair (2) slewing area.

Hand screw the most according to claim 1, is characterized in that: described linkage section (21) two faces parallel with boatswain chair (2) width are cambered surface (23).

Hand screw the most according to claim 1, is characterized in that: described boatswain chair (2) is rectangle, and boatswain chair (2) each angle is fillet.

Hand screw the most according to claim 1, is characterized in that: head of screw (11) upper surface is provided with and coordinates cross recess (3) or the flat recess turning screw with screwdriver.

Hand screw the most according to claim 1, is characterized in that: described shank of screw (12) head is provided with thread segment (121), and thread segment (121) diameter is more than the diameter of shank of screw (12).