CN209304444U - A kind of adjustable screwdriver of torsion - Google Patents

Abstract

The utility model relates to screwdrivers, disclose a kind of adjustable screwdriver of torsion, including stack shell and the handle being threadedly coupled with stack shell, screw rod is rotatably connected to by rolling bearing in stack shell, one end of screw rod protrudes into handle and is removably fixed with support sleeve, the peripheral wall of support sleeve is total to axial line and through equipped with multiple retraction slot, the slot that bounces back is interior to be equipped with retraction bulb, the astrosphere abutted with retraction bulb is equipped in support sleeve, astrosphere abutting has steel ball seat, steel ball seat and handle far from being crimped with elastic component between one end of stack shell；It is arranged with steel ball set outside support sleeve, steel ball set inner wall is equipped with to abut and corrugated torsion inner wall with retraction bulb；When torsion is less than or equal to setting torque value, retraction bulb and support sleeve and stack shell rotate, and torsion be greater than setting torque value when, retraction bulb is to support sleeve contract, to allow support sleeve to relatively rotate in stack shell, the control for realizing torsion, changes the distance that is spirally connected between the stack shell of threaded connection and handle, realizes the adjusting of torsion.

Description

A kind of adjustable screwdriver of torsion

Technical field

The utility model relates to screwdrivers, more specifically, it relates to a kind of adjustable screwdriver of torsion.

Background technique

Screwdriver is a kind of tool for twisting screw to force its in place, usually has a thin sphenocephaly, can insert Enter in the line of rabbet joint or recess of screw cap, also known as " screwdriver ".Screwdriver mainly has a word and two kinds of cross.Common also hexagonal Screwdriver, including interior hexagonal and two kinds of outer-hexagonal.

The screwdriver as disclosed in the Chinese patent that patent announcement number is CN203696878U, it includes handle, handle front end Equipped with the first screwdriver bar, handle side is equipped with the second screwdriver bar, the first screwdriver bar and the second screwdriver bar Length discrepancy, the One screwdriver bar and the second screwdriver bar end are equipped with screwdriver bit interface, and the first screwdriver bar peripheral wall is equipped with coarse microgroove.

Screwdriver tool in above-mentioned patent there are two types of the screwdriver bar of different length, turn round by rapid operation, but when in use Power is non-adjustable, therefore it can not be used in the occasion that torsion needs to change, and use occasion is limited.

Utility model content

Problem in view of the prior art, the utility model provides a kind of adjustable screwdriver of torsion, adjustable with torsion, The wide advantage of applicable situation type.

To achieve the above object, the utility model provides following technical solution:

A kind of adjustable screwdriver of torsion passes through in the stack shell including stack shell and the handle being threadedly coupled with stack shell Rolling bearing is rotatably connected to screw rod, and one end of the screw rod protrudes into the handle and is removably fixed with support sleeve, institute The peripheral wall for stating support sleeve is total to axial line and through multiple retraction slots is offered, and is equipped with retraction bulb, the support in the retraction slot The astrosphere abutted with the retraction bulb is equipped in set, the astrosphere abutting has steel ball seat, the steel ball seat and the handle It is crimped with elastic component between one end far from the stack shell, the elastic force of the elastic component is related to its length；

Be arranged with the steel ball set being fixedly connected with the stack shell outside the support sleeve, the steel ball set inner wall be equipped with it is described Retraction bulb abuts and corrugated torsion inner wall, when the steel ball set is rotated relative to the support sleeve, the retraction bulb It is squeezed out to the support sleeve contract, and by the astrosphere to outside the support sleeve.

Through the above technical solutions, screw rod can rotate in stack shell, and fix with support sleeve, support sleeve drives retraction bulb Rotation, when torsion is less than or equal to setting torque value, retraction bulb is in the trough of torsion inner wall together with support sleeve and stack shell Rotation, and when torsion is greater than setting torque value, retraction bulb is to support sleeve contract and by the wave crest of torsion inner wall, to allow branch Support set relatively rotates in stack shell, realizes the control of torsion, change simultaneously between the stack shell of threaded connection and handle be spirally connected away from From, to change the length of elastic component, elastic component is allowed to be applied to the pressure change on astrosphere, it is final change support sleeve and stack shell it Between relatively rotate the torsion to be overcome, to realize the adjusting of torsion.

Further, location hole is offered on the handle, the stack shell side wall offers locating slot, the locating slot Length direction is parallel with the length direction of the handle, and the location hole is aligned with the locating slot and is plugged with locating rod.

Through the above technical solutions, locating rod is plugged on simultaneously in location hole and locating slot, so that handle and stack shell will not It relatively rotates, so that the torsion of screwdriver will not be changed.

Further, one end of the screw rod extends along the direction far from the handle and is equipped with groove cylinder.

Through the above technical solutions, groove cylinder can be used cooperatively the different screw rod of screw terminal.

Further, the stack shell is provided with interior hexagonal far from one end inner wall of the handle.

Through the above technical solutions, in groove cylinder without grafting screw rod when can use interior hexagonal nutting or bolt head.

Further, the steel ball seat is fixedly connected with the guide rod extended into the elastic component.

Through the above technical solutions, guide rod can allow steel ball seat to remain the appearance correctly abutted in elastic component end State avoids steel ball seat crooked.

Further, multiple fixed strips, the length direction of the fixed strip and institute are provided on the outer wall of the steel ball set The length direction for stating handle is parallel, and multiple fixing grooves with fixed strip cooperation are provided on the handle inner wall.

Through the above technical solutions, fixed strip and fixing groove cooperate, prevents steel ball from covering and spin in handle.

Further, one end of the handle is removably connected with the reinforcing seat abutted with the elastic component, the reinforcing Thrusting groove of the opening direction far from the elastic component is offered on seat.

Through the above technical solutions, the pluggable extension bar of thrusting groove, increases the torque of rotation screw batch.

Further, internal screw thread is provided in the thrusting groove.

Through the above technical solutions, the drive screw connection of internal screw thread energy band screw head to block thrusting groove, avoids not using and add There is foreign object to block thrusting groove when power slot.

Further, the reinforcing seat periphery is coated by the handle end, and the peripheral wall of the reinforcing seat is also equipped with more A fixed strip.

Through the above technical solutions, reinforcing seat periphery is coated by the handle end, seat is reinforced without departing from pipe, fixed strip Reinforcing seat is set not skid in handle with fixing groove cooperation.

Compared with prior art, the utility model has the beneficial effects that screw rod can rotate in stack shell, and and support sleeve Fixed, support sleeve drives retraction bulb rotation, and when torsion is less than or equal to setting torque value, retraction bulb is in the trough of torsion inner wall Rotated together with support sleeve and stack shell, and torsion be greater than setting torque value when, retraction bulb to support sleeve contract and through torsion The wave crest of power inner wall realizes the control of torsion so that support sleeve be allowed to relatively rotate in stack shell, changes simultaneously the cylinder of threaded connection The distance that is spirally connected between body and handle allows elastic component to be applied to the pressure change on astrosphere, most to change the length of elastic component Change eventually and relatively rotate the torsion to be overcome between support sleeve and stack shell, to realize the adjusting of torsion.

Detailed description of the invention

Fig. 1 is the configuration schematic diagram of the utility model embodiment；

Fig. 2 is the enlarged structure schematic diagram of the utility model embodiment steel ball set.

Appended drawing reference: 1, stack shell；2, handle；3, location hole；4, locating slot；5, locating rod；6, rolling bearing；7, screw Bar；8, groove cylinder；9, support sleeve；10, bounce back slot；11, retraction bulb；12, astrosphere；13, steel ball seat；14, elastic component；15, it leads To bar；16, steel ball set；17, fixed strip；18, fixing groove；19, torsion inner wall；20, seat is reinforced；21, thrusting groove.

Specific embodiment

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

Embodiment

A kind of adjustable screwdriver of torsion, as shown in Figure 1, including cylindric stack shell 1, the threaded one end connection of stack shell 1 There is the handle 2 of circular tube shaped, runs through the location hole 3 offered towards its axial line, the screw thread of 1 side wall of stack shell on the side wall of handle 2 On offer along its axially extending locating slot 4, the length direction of locating slot 4 is parallel with the length direction of handle 2, location hole 3 Locating rod 5 is plugged with after being aligned with locating slot 4, locating rod 5, which allows between stack shell 1 and handle 2 to relatively rotate, realizes the two Between fixation.

Rolling bearing 6 in stack shell 1 by total axial line is rotatably connected to screw rod 7, and one end of screw rod 7 is along far from hand The direction of handle 2, which extends and passes through pin rod, is connected with groove cylinder 8, and stack shell 1 may be provided with interior hexagonal far from one end inner wall of handle 2, Interior hexagonal nutting or bolt head can be used when in groove cylinder 8 without grafting screw rod.The other end of screw rod 7 protrudes into handle 2 simultaneously The support sleeve 9 of total axial line is fixedly connected with by bolt, support sleeve 9 offers opening far from one end of screw rod 7.Support sleeve 9 peripheral wall is total to axial line and through multiple retraction slots 10 is offered, and is placed with retraction bulb 11 in retraction slot 10, and the two of retraction bulb 11 End protrudes from retraction slot 10, and can pass through from retraction slot 10.The astrosphere 12 abutted with retraction bulb 11 is equipped in support sleeve 9, The diameter of astrosphere 12 is greater than retraction bulb 11, and retraction bulb 11 can be ejected to retraction slot 10.Astrosphere 12 far from retraction bulb 11 one End, which abuts, steel ball seat 13, and steel ball seat 13 and handle 2 are crimped with spring and are made and are total to axial line between one end far from stack shell 1 Elastic component 14, the elastic force of elastic component 14 are related to its length.The side of 13 contact resilient part 14 of steel ball seat has been wholely set extension Enter the guide rod 15 in elastic component 14, guide rod 15 can allow steel ball seat 13 to remain fitting and just in 14 end of elastic component The posture really abutted avoids steel ball seat 13 crooked, realizes seamless contact.

As shown in connection with fig. 2, the steel ball set 16 connected and fixed with stack shell 1 is arranged with outside support sleeve 9, steel ball covers on 16 outer wall Multiple fixed strips 17 outwardly protruded are wholely set, the length direction of fixed strip 17 is parallel with the length direction of handle 2, and edge The axial line of support sleeve 9 equidistant circle distribution offers multiple fixing grooves 18 cooperated with fixed strip 17 on 2 inner wall of handle. Fixed strip 17 and fixing groove 18 cooperate, and prevent steel ball set 16 from spinning in handle 2.Steel ball 16 inner walls of set are equipped with to be supported with retraction bulb 11 It connects and corrugated torsion inner wall 19, the wave extending direction of torsion inner wall 19 is the circumferential direction of steel ball set 16.When steel ball covers 16 When rotating relative to support sleeve 9, retraction bulb 11 is squeezed into retraction slot 10 by the wave crest of torsion inner wall 19, and retraction bulb 11 is to support sleeve 9 contracts, and astrosphere 12 is squeezed out to outside support sleeve 9, shrink elastic component 14.

One end sliding of handle 2 is connected with the reinforcing seat 20 abutted with elastic component 14, reinforces 20 periphery of seat by 2 end of handle Cladding, 2 end of handle are wholely set the inner edge for hindering reinforcing seat 20 to be detached from handle 2.The peripheral wall of reinforcing seat 20 is also wholely set There are multiple fixed strips 17 outwardly protruded, fixed strip 17 and fixing groove 18 cooperate, and prevent reinforcing seat 20 from rotating in handle 2.Add Thrusting groove 21 of the opening direction far from elastic component 14 is offered on power seat 20, and internal screw thread, thrusting groove 21 are provided in thrusting groove 21 Pluggable extension bar increases the torque of rotation screw batch.

When screwdriver adjustable using torsion, screw rod 7 can rotate in stack shell 1, and fixed with support sleeve 9, support sleeve 9 Drive retraction bulb 11 rotate, when torsion be less than or equal to setting torque value when, retraction bulb 11 in the trough of torsion inner wall 19 with branch Support set 9 and stack shell 1 rotate together, and torsion be greater than setting torque value when, retraction bulb 11 to 9 contract of support sleeve and through torsion The wave crest of power inner wall 19 realizes the control of torsion so that support sleeve 9 be allowed to relatively rotate in stack shell 1, changes simultaneously threaded connection Stack shell 1 and handle 2 between the distance that is spirally connected allow elastic component 14 to be applied on astrosphere 12 to change the length of elastic component 14 Pressure change, final change relatively rotates the torsion to be overcome between support sleeve 9 and stack shell 1, to realize the adjusting of torsion.

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 (9)

1. a kind of adjustable screwdriver of torsion, including stack shell (1) and the handle (2) being threadedly coupled with stack shell (1), the stack shell (1) screw rod (7) are rotatably connected to by rolling bearing (6) in, which is characterized in that institute is protruded into one end of the screw rod (7) State handle (2) and be removably fixed with support sleeve (9), the peripheral wall of the support sleeve (9) be total to axial line and through offer it is multiple It bounces back slot (10), is equipped with retraction bulb (11) in the retraction slot (10), be equipped with and the retraction bulb (11) in the support sleeve (9) The astrosphere (12) of abutting, the astrosphere (12), which abuts, to be had steel ball seat (13), and the steel ball seat (13) and the handle (2) are remote It is crimped between one end from the stack shell (1) elastic component (14), the elastic force of the elastic component (14) is related to its length；

The steel ball set (16) being fixedly connected with the stack shell (1), steel ball set (16) inner wall are arranged with outside the support sleeve (9) Equipped with being abutted with the retraction bulb (11) and corrugated torsion inner wall (19), when the steel ball set (16) is relative to the branch When support set (9) rotates, retraction bulb (11) Xiang Suoshu support sleeve (9) contract, and by the astrosphere (12) to the branch Support set (9) squeezes out outside.

2. the adjustable screwdriver of torsion according to claim 1, which is characterized in that offer positioning on the handle (2) Hole (3), stack shell (1) side wall offer locating slot (4), the length direction of the locating slot (4) and the length of the handle (2) Degree direction is parallel, and the location hole (3) is aligned with the locating slot (4) and is plugged with locating rod (5).

3. the adjustable screwdriver of torsion according to claim 1, which is characterized in that one end of the screw rod (7) is along remote Direction from the handle (2) extends and is equipped with groove cylinder (8).

4. the adjustable screwdriver of torsion according to claim 1, which is characterized in that the stack shell (1) is far from the handle (2) one end inner wall is provided with interior hexagonal.

5. the adjustable screwdriver of torsion according to claim 1, which is characterized in that the steel ball seat (13) is fixedly connected with Extend into the guide rod (15) in the elastic component (14).

6. the adjustable screwdriver of torsion according to claim 1, which is characterized in that set on the outer wall of the steel ball set (16) It is equipped with multiple fixed strips (17), the length direction of the fixed strip (17) is parallel with the length direction of the handle (2), the hand Multiple fixing grooves (18) with the fixed strip (17) cooperation are provided on handle (2) inner wall.

7. the adjustable screwdriver of torsion according to claim 6, which is characterized in that one end of the handle (2) is detachable It is connected with the reinforcing seat (20) abutted with the elastic component (14), opening direction is offered on the reinforcing seat (20) far from described The thrusting groove (21) of elastic component (14).

8. the adjustable screwdriver of torsion according to claim 7, which is characterized in that in being provided in the thrusting groove (21) Screw thread.

9. the adjustable screwdriver of torsion according to claim 7, which is characterized in that reinforcing seat (20) periphery is described The peripheral wall of handle (2) end cladding, reinforcing seat (20) is also equipped with multiple fixed strips (17).