CN202377970U

CN202377970U - Screwdriver

Info

Publication number: CN202377970U
Application number: CN2011205689864U
Authority: CN
Inventors: 张玉霖; 贾建波; 孙师贤; 孟巍
Original assignee: China Oilfield Services Ltd; China National Offshore Oil Corp CNOOC
Current assignee: China Oilfield Services Ltd; China National Offshore Oil Corp CNOOC
Priority date: 2011-12-30
Filing date: 2011-12-30
Publication date: 2012-08-15
Anticipated expiration: 2021-12-30

Abstract

The utility model discloses a screwdriver, which comprises a handle, a screwdriver head and a centralizing sleeve, wherein the screwdriver head is provided with a rod part and a head part; the rod part is installed on the handle; the head part is connected with the rod part; and the centralizing sleeve is sheathed on the head part of the screwdriver head. When a screw is disassembled or assembled, the centralizing sleeve can be sheathed on the periphery of the screw so as to prevent the head part of the screwdriver from slipping out from a screw slot of the screw. Compared with the prior art, the screwdriver provided by the utility model can be used for successfully disassembling and assembling a straight-line shaped screw.

Description

Screwdriver

Technical field

The utility model relates to a kind of screwdriver.

Background technology

At machinery and in being electrically connected, usually use the various in-line screws of screwdriver dismounting.Because the size of the head of existing screwdriver and the screw slots of screw is less usually, when dismounting, the screwdriver head is easy to skid off the screw slots on the screw, makes troubles to the dismounting operation.

The utility model content

The utility model technical problem to be solved is to provide a kind of screwdriver of the in-line of dismounting successfully screw.

In order to solve the problems of the technologies described above, the utility model provides a kind of screwdriver, it is characterized in that, said screwdriver comprises: handle; Crewdriver attachment, this crewdriver attachment have bar portion that is installed on said handle and the head that is connected with this bar portion; With set upright sleeve, this supporting positive cover jacket casing is located at the head of said crewdriver attachment.

Preferably; Said crewdriver attachment has the connecting portion that is connected between said bar portion and the said head; And the diameter of this connecting portion is greater than the diameter of said bar portion, and the said internal perisporium of setting upright sleeve is provided with inward flange, and this inward flange is stuck on the cascaded surface that said connecting portion and said bar portion form.

Preferably, said screwdriver also comprise be sheathed on said bar portion and be squeezed in said handle and said inward flange between spring.

Preferably, said crewdriver attachment is removably installed in said handle.

Preferably; Said handle comprises: handle main body; This handle main body has stem and clamping part; Said clamping part is made up of to a plurality of elastomers of circumferential distribution that extend out, the said stem in edge the end axis from said stem, and a plurality of said elastomeric end is formed with male cone (strobilus masculinus); And lock sleeve, this lock sleeve have vertical tube part with this vertical tube part awl tube that be connected, that be formed with inner conical surface portion; Wherein, the bar portion of said crewdriver attachment is inserted between a plurality of elastomers of said clamping part, and said lock sleeve is set on the said handle main body and through said inner conical surface and pushes said elastomeric male cone (strobilus masculinus).

Preferably, said clamping part has three said elastomers, and three elastomers circumferentially are evenly distributed along said stems, and the bar portion of said crewdriver attachment has the triangular prism shape.

Preferably, the vertical tube part of said lock sleeve is installed on the stem of said handle main body through the mode that is threaded.

Preferably, said handle also comprises the handle portion that is sheathed on said handle main body, and, the periphery wall form fit of the internal perisporium of said handle portion and said handle main body.

Preferably, the internal perisporium of said handle portion has interior hexagon shape, and the periphery wall of said handle main body has and is somebody's turn to do the outer hexagon shape that interior hexagon shape cooperates.

Preferably, said screwdriver comprises that also rotation is sheathed on the rotary sleeve of said handle portion freely.

Screwdriver among the embodiment of the utility model is equipped with at the head of crewdriver attachment and sets upright sleeve, and when the dismounting screw, this sets upright the periphery that sleeve can be enclosed within screw, thereby the head that prevents crewdriver attachment skids off from the screw slots of screw.Therefore, compared with prior art, the screwdriver that the utility model provided is dismounting in-line screw successfully.

Description of drawings

The structural representation of the screwdriver that Fig. 1 (a) provides for the embodiment of the utility model, Fig. 1 (b) is the full sectional view of the screwdriver shown in Fig. 1 (a).

The front view of the crewdriver attachment of the screwdriver that Fig. 2 (a) provides for the embodiment of the utility model, Fig. 2 (b) is the vertical view of the crewdriver attachment shown in Fig. 2 (a), Fig. 2 (c) is the A-A cutaway view of the crewdriver attachment shown in Fig. 2 (a).

The full sectional view of setting upright sleeve of the screwdriver that Fig. 3 provides for the embodiment of the utility model.

The structural representation of the handle main body of the screwdriver that Fig. 4 (a) provides for the embodiment of the utility model; Fig. 4 (b) is the full sectional view of the handle main body shown in Fig. 4 (a); Fig. 4 (c) is the B-B cutaway view of the handle main body shown in Fig. 4 (b), and Fig. 4 (d) is the C-C cutaway view of the handle main body shown in Fig. 4 (b).

The full sectional view of the lock sleeve of the screwdriver that Fig. 5 provides for the embodiment of the utility model.

The full sectional view of the handle portion of the screwdriver that Fig. 6 (a) provides for the embodiment of the utility model, Fig. 6 (b) is the D-D cutaway view of the handle portion shown in Fig. 6 (a).

The sketch map of the user mode of the screwdriver that Fig. 7 provides for the embodiment of the utility model.

Description of symbols:

1 handle, 2 crewdriver attachments, 3 are set upright sleeve, 4 springs, 11 handle bodies, 12 lock sleeves, 13 handle portions, 14 securing members, 15 rotary sleeves, 21 bar portions, 22 heads, 23 connecting portions, 24 cascaded surfaces, 31 inward flanges, 111 stems, 112 clamping parts, 121 vertical tube parts, 122 awl tube portions, 131 operating sides, 132 through holes, b screw, e elastomer, i inner conical surface, o male cone (strobilus masculinus), f internal thread, m external screw thread

The specific embodiment

For the purpose, technical scheme and the advantage that make the utility model is clearer, hereinafter will combine accompanying drawing that the embodiment of the utility model is elaborated.Need to prove that under the situation of not conflicting, embodiment among the application and the characteristic among the embodiment be combination in any each other.

As shown in Figure 1, the screwdriver that the embodiment of the utility model provides comprises handle 1, crewdriver attachment 2 and sets upright sleeve 3.Crewdriver attachment 2 has an end and is installed on the head 22 that the bar portion 21 of handle 1 is connected with the other end with this bar portion 21.Set upright the head 21 that 3 in sleeve is set in crewdriver attachment 2.When dismounting screw 1, above-mentionedly set upright the periphery that sleeve 3 can be enclosed within screw, thereby the head 21 that prevents crewdriver attachment 2 skids off from the screw slots of screw in use.

In addition, as shown in Figure 2, crewdriver attachment 2 can also have connecting portion 23; This connecting portion 23 is connected between bar portion 21 and the head 22; And the diameter of this connecting portion 23 is greater than the diameter of bar portion 20, and the parts that make connecting portion 23 and bar portion 21 be formed by connecting have cascaded surface 24.Correspondingly, as shown in Figure 3, set upright the inward flange 31 that is formed with ring-type on the internal perisporium of sleeve 3.Like this, in use, just can inward flange that set upright sleeve 3 31 be stuck on the above-mentioned cascaded surface 24, break away from crewdriver attachment 2 thereby prevent to set upright sleeve 3.

Because having the sleeve 3 of setting upright of the screwdriver of said structure is not restricted along moving of crewdriver attachment 2 length directions; Therefore; In use, need the hand steered sleeve 3 of firmly setting upright, the another hand-screw is twisted handle 1; Just can guarantee to set upright sleeve 3 is enclosed within screw all the time in disassembly process periphery, this makes that the use of screwdriver is comparatively complicated.

For this reason, the preferred embodiment of the utility model also is provided with to be used to limit and sets upright the spring 4 that move of sleeve 3 along crewdriver attachment 2 length directions.Concrete as Fig. 1 (a) and Fig. 1 (b) shown in, spring 4 is sheathed on the bar portion 21 of crewdriver attachment 2 and at handle 1 with set upright between the inward flange 31 of sleeve 3, two ends receive the extruding of handle 1 and inward flange 31 respectively.Thus, spring 4 can be exerted pressure to setting upright sleeve 3 through inward flange 31, will set upright sleeve 3 and be squeezed between spring 4 and the inward flange 31, sets upright sleeve 3 and can't move freely along the length direction of crewdriver attachment 2 thereby make.Like this, in disassembly process, set upright sleeve 3 and just can be enclosed within the screw periphery, prevent that crewdriver attachment 2 from skidding off the screw slots of screw.

In addition, the screwdriver of the utility model preferably has removable crewdriver attachment 2, and these removable crewdriver attachments 2 are removably installed in handle 1.Therefore, the user just can select the crewdriver attachment of different model as required.

Crewdriver attachment 2 can be connected with handle 1 through multiple dismountable structure, and for example, utility model people provides following structure.Particularly, shown in Fig. 1 (b), handle 1 comprises handle main body 11 and lock sleeve 12.As shown in Figure 4; Handle main body 11 has interconnective stem 111 and clamping part 112; Clamping part 112 by from the end axis of stem 111 to extend out, constitute along a plurality of elastomer e of the circumferential distribution of stem 111, and the end of clamping part 112 is formed with male cone (strobilus masculinus) o.As shown in Figure 5, lock sleeve 12 has

vertical tube part

121 and 121 that be connected with this vertical tube part, as to be formed with inner conical surface i awl tube portion 122.Under confined state; The bar portion 21 of crewdriver attachment 2 is inserted between a plurality of elastomer e of clamping part 112; Lock sleeve 12 is set on the handle main body 11 and utilizes the male cone (strobilus masculinus) o of its inner conical surface i extruding elastomer e end, thereby elastomer e is shunk to the inside, clamps crewdriver attachment 2.

Certainly, more than only be a kind of representative structure, can realize that the structure of the detachable function of crewdriver attachment 2 is not limited to this, for example, can also in the installing hole of handle 1, magnet be set, thereby utilize the magnetic force of magnet that crewdriver attachment 2 is fixed in handle 1.

The number of above-mentioned elastomer e can be two or more; But be preferably three; And three elastomer e circumferentially are evenly distributed along stem 111, are approximated to leg-of-mutton grasping part thereby between three elastomer e, form cross section, shown in Fig. 4 (d).Correspondingly, shown in Fig. 2 (c), the bar portion 21 of crewdriver attachment 2 has the triangular prism shape.Like this, clamping part 112 just can be through the above-mentioned grasping part bar portion 21 of clamping crewdriver attachment 2 securely.

Lock sleeve 12 can be installed on the handle main body 11 in several ways.For example; Can claw be set in vertical tube part 121 ends of lock sleeve 12; And it is protruding that the fastening that can cooperate with above-mentioned claw is set on the stem 111 of handle main body 11, thereby through claw and the protruding cooperation of fastening lock sleeve 12 is installed on the handle main body 11.In the embodiment of the utility model, lock sleeve 12 is installed on handle main body 11 through the mode that is threaded.Particularly, like Fig. 1 (b), Fig. 4 and shown in Figure 5, the vertical tube part 121 of lock sleeve 12 is formed with internal thread f, and the stem 111 of handle main body 11 is formed with external screw thread m.Under confined state, the internal thread f of vertical tube part 121 is engaged in the external screw thread m of stem 111, thereby lock sleeve 12 is installed on the handle main body 11.

In addition, shown in Fig. 1 (a), Fig. 1 (b), the handle 1 of present embodiment also has been equipped with handle portion 13.This handle portion 13 is sheathed on handle main body 11, and the form fit of the periphery wall through its internal perisporium and handle main body 11 is come to handle main body 11 transmitting torques.Promptly; Shown in Fig. 4 (c) and Fig. 6 (b); The cross section of the periphery wall of the stem 111 of handle main body 11 forms outer hexagon shape, and the cross section of the internal perisporium of handle portion 13 forms the interior hexagon shape that can be complementary with above-mentioned outer six sides, cooperatively interacting between periphery wall through outer six sides and interior six sides' the internal perisporium; Limit the two relative motion, thereby make handle portion 13 give handle main body 11 transmission of torque around axis direction.

And; For the ease of user's operation, the operating side of the handle portion 13 of present embodiment (being the left end among Fig. 6) 131 is formed with expands the open form shape, promptly; The radial dimension of operating side 131 periphery walls increases along with the extension of (with reference to Fig. 6) to the left gradually, forms so-called " tubaeform ".Certainly, the structure of the operating side 131 of handle portion 13 is not limited to form the situation that expands the open form shape.For example; Also can offer the through hole that vertically (with reference to the above-below direction among Fig. 6) run through in operating side 131 and in this through hole, insert rod-like element; Perhaps directly this rod-like element is formed at the operating side 131 of handle portion 13, thereby utilizes lever principle to operate said screwdriver.

In addition, for handle portion 13 is fixed on the handle main body 11, present embodiment also is provided with securing member 14.This securing member 14 passes the through hole 132 that is formed at handle portion 13 ends vertically and is connected with handle main body 11, thereby prevents that handle portion 13 breaks away from from handle main body 11.In the screwdriver shown in Fig. 1 (b), above-mentioned securing member 14 is a screw, and this screw passes the counterbore (through hole 132) of handle portion 13 and screws togather with the screw thread of handle main body 11, and the nut of screw blocks handle portion 13 simultaneously, plays the purpose that prevents that handle portion 13 from coming off.

In addition, shown in Fig. 1 (a) and Fig. 1 (b), the screwdriver of the embodiment of the utility model can also be provided with the rotary sleeve 15 that rotation is sheathed on handle portion 13 freely.Particularly, above-mentioned rotary sleeve 15 is a cartridge, under confined state, rotary sleeve 15 be enclosed within the peripheral of handle portion 13 and with handle portion 13 matched in clearance.Like this, when using screwdriver, the operator just can utilize hand steered firmly 15, one hand-screws of rotary sleeve to twist handle portion 13, thereby arrives the purpose of being convenient to operate.

Fig. 7 is the sketch map of the duty of the screwdriver that provides of embodiment of expression the utility model.Below, with reference to Fig. 7 the course of work of screwdriver is elaborated.

When needs dismounting (or installation) screw b, at first, select and install suitable crewdriver attachment 2 and set upright sleeve 3 according to the shape and size of screw b.Then, with the crewdriver attachment 2 alignment screw b of screwdriver, and will set upright the nut that sleeve 3 is nested into screw b from left end (being the left end Fig. 7).At this moment, rotary handle 1 gently, and crewdriver attachment 2 can slip into screw slots.At last, a hand steered firmly rotary sleeve 15, the another hand-screw is twisted handle portion 13, and screw b is implemented dismounting (or installation) operation.

Though the embodiment that the utility model disclosed as above, the embodiment that described content just adopts for the ease of understanding the utility model is not in order to limit the utility model.Technical staff under any the utility model in the technical field; Under the prerequisite of spirit that does not break away from the utility model and disclosed and scope; Can do any modification and variation what implement in form and on the details; But the scope of patent protection of the utility model still must be as the criterion with the scope that appending claims was defined.

Claims

1. a screwdriver is characterized in that, said screwdriver comprises:

Handle;

Crewdriver attachment, this crewdriver attachment have bar portion that is installed on said handle and the head that is connected with this bar portion; With

Set upright sleeve, this supporting positive cover jacket casing is located at the head of said crewdriver attachment.

2. screwdriver according to claim 1 is characterized in that, said crewdriver attachment has the connecting portion that is connected between said bar portion and the said head, and the diameter of this connecting portion is greater than the diameter of said bar portion,

The said internal perisporium of setting upright sleeve is provided with inward flange, and this inward flange is stuck on the cascaded surface that said connecting portion and said bar portion form.

3. screwdriver according to claim 2 is characterized in that, said screwdriver also comprise be sheathed on said bar portion and be squeezed in said handle and said inward flange between spring.

4. screwdriver according to claim 3 is characterized in that said crewdriver attachment is removably installed in said handle.

5. screwdriver according to claim 4 is characterized in that, said handle comprises:

Handle main body, this handle main body has stem and clamping part, and said clamping part is made up of to a plurality of elastomers of circumferential distribution that extend out, the said stem in edge the end axis from said stem, and the end of said clamping part is formed with male cone (strobilus masculinus); With

Lock sleeve, this lock sleeve have vertical tube part with this vertical tube part awl tube that be connected, that be formed with inner conical surface portion;

Wherein, the bar portion of said crewdriver attachment is inserted between a plurality of elastomers of said clamping part, and said lock sleeve is set on the said handle main body and through said inner conical surface and pushes said elastomeric male cone (strobilus masculinus).

6. screwdriver according to claim 5 is characterized in that, said clamping part has three said elastomers, and three elastomers circumferentially are evenly distributed along said stems, and the bar portion of said crewdriver attachment has the triangular prism shape.

7. according to claim 5 or 6 described screwdrivers, it is characterized in that the vertical tube part of said lock sleeve is installed on the stem of said handle main body through the mode that is threaded.

8. screwdriver according to claim 7 is characterized in that said handle also comprises the handle portion that is sheathed on said handle main body, and, the periphery wall form fit of the internal perisporium of said handle portion and said handle main body.

9. screwdriver according to claim 8 is characterized in that, the internal perisporium of said handle portion has interior hexagon shape, and the periphery wall of said handle main body has and is somebody's turn to do the outer hexagon shape that interior hexagon shape cooperates.

10. screwdriver according to claim 8 is characterized in that, said screwdriver comprises that also rotation is sheathed on the rotary sleeve of said handle portion freely.