CN209304446U - A kind of precision screw easy to use batch - Google Patents

Abstract

The utility model discloses a kind of precision screws easy to use batch, it is related to screwdriver field, including set top and knife bar, socket part and cutter head are fixedly connected on knife bar, set top is socketed on socket part, lug boss is provided between set top and socket part, lug boss is used to reduce the contact area between set top and socket part.When using precision screw batch, user pushes down at the top of screwdriver, frictional force at the top of screwdriver between knife bar will increase, cause user's swivel knife carrier more painstaking, rotation speed is slow, it is easy when firmly stirring knife bar so that the cutter head of screwdriver is skidded off from the line of rabbet joint of screw cap, operation is inconvenient, above scheme pushes up set will not completely attach between socket part, but by lug boss come so that the contact area between set top and socket part reduces, to reduce the frictional force between set top and socket part, when user's press sleeve top and when rotating knife bar, biggish resistance is not had, the convenience for enabling operation become.

Description

A kind of precision screw easy to use batch

Technical field

The utility model relates to screwdriver fields, more particularly, to a kind of precision screw easy to use batch.

Background technique

Screwdriver is a kind of tool for twisting screw to force its in place, usually there is the cutter head of one thin wedge shape, It can be inserted into the line of rabbet joint or recess of screw cap, a kind of existing precision screw batch, top uses the side of pivot bush unit with knife bar Formula connection, user is pushed down at the top of screwdriver with index finger when in use, and is criticized with thumb and middle finger rotary screw.

But above-mentioned precision screw batch has a problem that, when user pushes down at the top of screwdriver, at the top of screwdriver Frictional force between knife bar will increase, and cause user's swivel knife carrier more painstaking, and rotation speed is slow, when firmly stirring knife bar It is easy so that the cutter head of screwdriver is skidded off from the line of rabbet joint of screw cap, operation is inconvenient.

Utility model content

In view of the above problems, the object of the present invention is to provide a kind of precision screws easy to use batch, have behaviour Make convenient effect.

The above-mentioned purpose of utility model of the utility model has the technical scheme that

A kind of precision screw easy to use batch, including set top and knife bar, be fixedly connected on the knife bar socket part and Cutter head, the set top are socketed on the socket part, and lug boss, the protrusion are provided between the set top and the socket part Portion is used to reduce the contact area between the set top and the socket part.

By using above-mentioned technical proposal, so that will not completely attach between set top and socket part, but pass through lug boss Come so that the contact area reduction covered between top and socket part works as use to reduce the frictional force between set top and socket part Person's press sleeve top and when rotating knife bar, does not have biggish resistance, the convenience for enabling operation become.

Further: the lug boss is fixedly connected on the inner wall on the set top, the lug boss and the socket part Between be point contact.

By using above-mentioned technical proposal, due to being point contact between lug boss and socket part, and lug boss and set top are solid Fixed connection, so that the frictional force that socket part is subject to when rotation in set pushes up is very small.

Further: the lug boss is fixedly connected on the end of the socket part, the lug boss and the set top it Between be point contact.

By using above-mentioned technical proposal, due to being point contact between lug boss and set top, and lug boss and socket part are solid Fixed connection, so that the frictional force that socket part is subject to when rotation in set pushes up is very small.

Further: the face that the surface of the lug boss is abutted with the lug boss is disposed as ceramic plane.

By using above-mentioned technical proposal, lug boss is connected on a smooth face, and ceramic plane is rigid It spends larger, deformation is nearly free from when depressed, so that when user press sleeve top, between the face that lug boss is abutted with it still So keep point contact.

Further: the length scale of the socket part is greater than the length scale on the set top.

It is further decreased by using above-mentioned technical proposal so that the end that set abuts against nearly knife bar will not touch knife bar Frictional force rotates knife bar while pinning set top convenient for user.

Further: the face that the face of knife bar described in the set top contact contacts the set top with the knife bar is disposed as gold Category face.

By using above-mentioned technical proposal, so that the contact surface between set top and knife bar is the shiny surface of hard, thus So that frictional force is very small, set top contact knife bar to be not easy to block foreign matter between set top and knife bar.

Further: the set top is fixedly connected with restraining position ring block, and the socket part is fixedly connected with limiting section, when the set When top is socketed on the socket part, the stop collar is clamped the limiting section.

By using above-mentioned technical proposal, so that keeping covering the interior of top while the relationship of clamping between set top and socket part Wall will not be bonded with the periphery of socket part completely, reduce the frictional force between set top and socket part.

It is further: pressing groove to be offered on the set top, the pressing groove is arc groove.

By using above-mentioned technical proposal, the pressing groove of arc is more bonded the radian of user's index finger, is convenient for user Press sleeve top.

It is further: to be fixedly connected with anti-skid chequer in the pressing groove.

By using above-mentioned technical proposal, enhance frictional force when user pins pressing groove, enables a user to steady Fixed pins pressing groove.

It is further: to be fixedly connected with anti-slip layer on the knife bar.

By using above-mentioned technical proposal, so that frictional force when user's thumb and middle finger rotation knife bar increases, rotation It is more easy and convenient when knife bar.

In conclusion the advantageous effects of the utility model include:

(1) by setting lug boss so that set top and socket part between will not completely attach to, by lug boss enable set top with Contact area between socket part reduces, to reduce the frictional force between set top and socket part, when user's press sleeve top simultaneously When rotating knife bar, biggish resistance is not had, the convenience for enabling operation become；

(2) by setting ceramic plane for the face on the surface of lug boss and lug boss abutting, lug boss is abutted On a smooth face, and the rigidity of ceramic plane is larger, and deformation is nearly free from when depressed, so that user's press sleeve When top, point contact is still maintained between the face that lug boss is abutted with it.

Detailed description of the invention

Fig. 1 is the overall schematic of the utility model embodiment one；

Fig. 2 is the cross-sectional view that the utility model embodiment one shows socket part；

Fig. 3 is the cross-sectional view that the utility model embodiment two shows lug boss.

Appended drawing reference: 1, set top；2, knife bar；3, cutter head；4, socket part；5, stop collar；6, limiting section；7, lug boss；8, Pressing groove；9, anti-skid chequer；10, anti-slip layer.

Specific embodiment

With reference to the accompanying drawings and examples, the utility model is described in detail.

Embodiment one

A kind of precision screw easy to use batch, as depicted in figs. 1 and 2, including set top 1 and knife bar 2, one end of knife bar 2 It is fixedly connected with cutter head 3, the other end is fixedly connected with columned socket part 4, and set top 1 is socketed on socket part 4.In set top 1 It is wholely set restraining position ring block 5 on wall, circular limiting section 6 is wholely set on 4 outer wall of socket part, when set top 1 is socketed in set When in socket part 4, stop collar 5 and limiting section 6 are clamped, therefore the inner wall for covering top 1 will not be bonded completely with the periphery of socket part 4, When set top 1 rotates on socket part 4, friction is small.

The bottom wall central on set top 1 has been wholely set lug boss 7, and lug boss 7 is spherical in semicircle, when user's press sleeve top 1 When, lug boss 7 is connected on end face of the socket part 4 far from knife bar 2.The surface of lug boss 7 and socket part 4 abut lug boss 7 Surface is disposed as ceramic plane, thus between lug boss 7 and socket part 4 be in smooth contact surface, due to ceramic plane rigidity compared with Greatly, deformation is hardly generated by the pressing of user, so that connecing between the spherical lug boss 7 and socket part 4 of semicircle in point Touching.

Set top 1 contact knife bar 2 face and knife bar 2 contact socket part 4 face on be disposed as metal covering so that set top 1 with Contact surface between knife bar 2 is the shiny surface of hard, so that frictional force is very small, while covering 1 contact knife bar 2 of top and making It is not easy to block foreign matter between set top 1 and knife bar 2.

1 pressing groove 8 for offering arc channel-shaped on one side far from knife bar 2 of set top, the pressing groove 8 of arc are more bonded use The radian of person's index finger, the anti-skid chequer 9 of annular is fixedly connected in pressing groove 8, and anti-skid chequer 9 can increase user's index finger and pressing Frictional force between slot 8 enables a user to stable pin pressing groove 8.

Anti-slip layer 10 is fixedly connected on knife bar 2, so that frictional force increases when the thumb of user and middle finger rotation knife bar 2 Greatly, thus can be more easy and convenient rotation knife bar 2.

In conclusion index finger pins 1 top of set top, middle finger and thumb wheel when staff is using precision screw batch Knife bar 2, due to being fixedly connected with the spherical lug boss 7 of semicircle on the inner wall on set top 1, and the surface of lug boss 7 and socket part 4 Surface is disposed as ceramic plane, therefore the frictional force covered between top 1 and socket part 4 is very small, and staff can be easily smooth Rotation knife bar 2, it is very convenient to use.

Embodiment two

A kind of precision screw easy to use batch, as shown in figure 3, being with the difference of embodiment one, the protrusion one Body is arranged on end face of the socket part 4 far from knife bar 2, set top 1 inner wall be set as ceramic plane so that protrusion and set top 1 it Between be in smooth contact surface, and deformation is not easy, so that set top 1 keeps point contact with protrusion.

The length scale of socket part 4 is greater than the length scale on set top 1, therefore set top 1 will not be contacted close to the end of knife bar 2 To knife bar 2, frictional force is further decreased, rotates knife bar 2 while pinning set top 1 convenient for user.

The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.

Claims (10)

1. a kind of precision screw easy to use batch, including set push up (1) and knife bar (2), set is fixedly connected on the knife bar (2) Socket part (4) and cutter head (3), the set top (1) are socketed on the socket part (4), it is characterised in that: the set top (1) and institute It states and is provided between socket part (4) lug boss (7), the lug boss (7) is for reducing the set top (1) and the socket part (4) contact area between.

2. precision screw according to claim 1 batch, it is characterised in that: the lug boss (7) is fixedly connected on the set It is point contact between the lug boss (7) and the socket part (4) on the inner wall for pushing up (1).

3. precision screw according to claim 1 batch, it is characterised in that: the lug boss (7) is fixedly connected on the set The end of socket part (4) is point contact between the lug boss (7) and the set top (1).

4. precision screw according to claim 2 or 3 batch, it is characterised in that: the surface of the lug boss (7) with it is described convex It plays the face that portion (7) abut and is disposed as ceramic plane.

5. precision screw according to claim 1 batch, it is characterised in that: the length scale of the socket part (4) is greater than institute State the length scale on set top (1).

6. precision screw according to claim 1 batch, it is characterised in that: the set top (1) contacts the face of the knife bar (2) The face that the set top (1) is contacted with the knife bar (2) is disposed as metal covering.

7. precision screw according to claim 1 batch, it is characterised in that: the set top (1) is fixedly connected with restraining position ring block (5), the socket part (4) is fixedly connected with limiting section (6), when the set top (1) is socketed on the socket part (4), institute It states stop collar (5) and is clamped the limiting section (6).

8. precision screw according to claim 1 batch, it is characterised in that: pressing groove (8) are offered on the set top (1), The pressing groove (8) is arc groove.

9. precision screw according to claim 8 batch, it is characterised in that: be fixedly connected in the pressing groove (8) anti-skidding Line (9).

10. precision screw according to claim 1 batch, it is characterised in that: be fixedly connected with anti-slip layer on the knife bar (2) (10).