TWM551551U - Driving rod structure of power tool - Google Patents

Description

Drive rod structure of power tool

The present invention relates to a driving rod structure of a power tool, which mainly refers to a jointable sleeve or a screwdriver head, and has a better assembly stability and a safety structure.

Conventional electric or pneumatic power tools generally have a driving rod set on the rotating head, and rotating the rotating head can drive the driving rod to rotate, so that the bolt engaged by the driving rod can be rotated correspondingly, and the driving rod can be a plug sleeve or It can be connected to different structures such as screwdrivers.

However, in the foregoing structure, when the power tool is required to make the drive rod insertable sleeve or the socket can be used for different work, it is necessary to take time to remove the original drive rod set on the rotary head, and then remove and replace the other drive. The rod is assembled on the rotating head and is inconvenient to use.

In order to improve the foregoing situation, it is currently possible to add a sleeve or a set of post design to the front end of the driving rod, so that the sleeve or the rod can be assembled by removing the driving rod from the rotating head of the power tool. Do different jobs.

However, because the power tool is often used in a high-speed rotation state, the sleeve or the post and the drive rod may be detached at high speed due to the rotational force during operation, and the use danger is caused.

In addition, if the driving force of the driving rod exceeds its strength, the driving rod will be pulverized and broken, and the scattered debris will be harmful to the human body.

The purpose of this creation is to provide an engageable sleeve or a screwdriver head with a preferred combination of stability and safety of use.

The present invention comprises a rod body, a C-shaped buckle and a sleeve, and the rod body has a plug-in section engageable with the rotating head of the power tool, and the front part of the rod body corresponds to the working section of the plugging section, and the working section The rear end has a damper having a diameter larger than the working section, and a concave first positioning groove is disposed behind the working section, and the front side of the first positioning groove has a first guiding inclined surface inclined toward the front, and the rear side has a corresponding axial direction of the rod body a first first stop surface, and a concave second positioning groove is disposed at a position corresponding to a front side of the first positioning groove in the axial direction of the working portion, and a second guiding inclined surface is inclined toward the rear side of the second positioning groove, and the working The segment corresponds to the cylindrical positioning portion between the first and second positioning grooves, and the axial portion of the working portion corresponds to the non-circular joint portion of the second positioning groove, and the width of the joint portion is larger than the retaining edge of the positioning portion. And a joint end is arranged at the front end of the joint; the C-shaped buckle sleeve is disposed at the position of the positioning portion of the rod body; and the sleeve has a sleeve portion which can be fitted with the rod body and can be displaced at the rod body positioning portion, and is sleeved The front of the segment has a splicable rod body joint and can be rotated with the joint In the joint section, the rear inner wall of the sleeve section is provided with an engagement groove recessed toward the inner wall and engaging the volume of the C-shaped buckle portion, and is disposed at the rear side of the engagement groove to the rear end of the socket section to be expanded toward the rear diameter. The guide bevel has a sleeve hole that can engage the outer driver head in front of the joint.

In the assembly of the present invention, the C-type buckle can be placed on the first positioning groove of the rod body, and then the sleeve is sleeved with the rod body, and an external force is applied to displace the sleeve toward the rear of the rod body, and the rear groove of the sleeve can be engaged. The C-shaped buckle is engaged, and the third guiding slope of the rear end of the sleeve can facilitate the assembly of the C-shaped buckle to be easily embedded in the engaging groove and interlock with the sleeve, and the C-shaped buckle portion can protrude from the outside of the engaging groove, and When the C-shaped buckle is engaged with the first positioning groove of the rod body, the rear side of the sleeve can be located at the position of the rear positioning portion of the working portion of the rod body, and the front joint end of the working portion of the rod body can be exposed, and the front side of the working portion can be The sleeve hole of the outer sleeve is inserted, and the first stop surface of the first positioning groove abuts against the C-shaped buckle to ensure that the C-shaped buckle does not be displaced backwards from the first positioning groove; and the sleeve is corresponding to the front of the rod body When moving, the displacement of the C-shaped buckle can be engaged with the second positioning groove, and the front hole of the engaging section of the sleeve can be convexly protruded outside the working section of the rod body, so that the sleeve hole can be used for the sleeve and the sleeve is used. The first guiding slope of the first positioning slot can facilitate the forward displacement of the C-shaped buckle when the cylinder is displaced, and the second positioning slot The second guiding inclined surface can facilitate the introduction of the C-shaped buckle into the second positioning groove, and the rear retaining edge of the rod engaging portion can abut against the C-shaped buckle to restrict the sleeve from moving forward, thereby ensuring that the sleeve can only be used on the rod body. Axial displacement and does not detach from the rod for better combination stability.

Further, the joint portion of the present invention is provided with first and second grooves respectively corresponding to the radial rear and front positions of the rod body, and the first and second grooves respectively engage the spring, and the spring top is provided with the balls, and the sleeve is joined. The inner wall of the segment is axially disposed with a guiding groove that can be engaged with the rod of the rod body, and the sleeve and the rod body can have better joint stability.

The first and second positioning grooves of the creation design are small portions of the working section of the rod body. When the driving rod rotates more than the set torque, the rod body can be broken at the position of the first positioning groove or the second positioning groove, thereby preventing the rod body from being crushed. Several blocks are diffused and fly out, which can be used for better safety. However, this combination does not detach from the rod due to the combination of the sleeve, which ensures that the sleeve is instantaneously detached during the rotating operation, and the safety can be better. And reliability.

Please refer to the first and second figures. The driving rod of the present invention comprises a rod body 1, a C-shaped buckle 2, a sleeve 3, and the rod body 1 is an elongated body, and the rear end has a rotating head 4 with a power tool. (As shown in the fifth figure) the joint portion 11 is engaged, and the rod body 1 has a working portion 12 corresponding to the front of the plug portion 11, and the rear end of the working portion 12 is engaged with the plug portion 11 with a diameter larger than the working portion 12. The first locating groove 14 is disposed at a position corresponding to the front of the dam 13 at the rear of the working portion 12, and the front side of the first locating groove 14 has a first guiding inclined surface 141 inclined toward the front, and the rear side has a corresponding The first blocking surface 142 of the rod body 1 is axially perpendicular, and the second positioning groove 15 is disposed in the axial direction corresponding to the first positioning groove 14 in the axial direction of the working portion 12, and the rear side of the second positioning groove 15 is rearward. The second guiding inclined surface 151 is inclined, and the working section 12 is a cylindrical positioning portion 16 corresponding to the first and second positioning grooves 14 and 15 , and a cross section about the second positioning groove 15 in the axial direction of the working section 12 The joint portion 17 has a width larger than the retaining edge 171 of the positioning portion 16 and the radial direction of the joint portion 17 corresponding to the rod body 1 The first and second recesses 18, 19 are respectively disposed at the front position, and the first and second recesses 18, 19 respectively engage the springs 181, 191, and the springs 181, 191 are provided with the balls 182, 192 at the top end; The front end is provided with a diameter smaller than the joint end 172 of the joint portion 17, and the magnetic member 173 is disposed at the joint end 172, and the rear end of the magnetic member 173 can engage a telescopic spring (not shown) to apply a plurality of screws of different lengths (not shown). .

The C-shaped buckle 2 is disposed at the position of the positioning portion 16 of the rod body 1 and is interlocked with the sleeve 3.

The sleeve 3 has a sleeve portion 31 which can be fitted with the rod body 1 and can be displaced at the positioning portion 16 of the rod body 1. The sleeve portion 31 has a sleeve portion 1 at the front of the sleeve portion 1 and is rotatable with the joint portion 17. The joint portion 32 of the joint portion 32 and the hollow inner wall of the joint portion 32 correspond to the shape of the joint portion 17 of the rod body 1, and the inner wall of the rear portion of the sleeve portion 31 is disposed to be recessed toward the inner wall and can engage the partial volume of the C-shaped buckle 2. The groove 311 is disposed, and a third lead inclined surface 312 which is expanded toward the rear diameter is disposed from the rear side of the engaging groove 311 to the rear end of the socket portion 31. The inner wall of the engaging portion 32 is axially disposed to be in contact with the rods 182 and 192 of the rod body 1. The engagement groove 321 is engaged by the engagement, and the engagement portion 32 has a sleeve hole 322 that can engage the external tool assembly.

Please refer to the second figure. In the design of the present invention, the C-shaped buckle 2 can be first placed at the position of the first positioning groove 14 of the rod body 1, and then the sleeve 3 is fitted with the rod body 1 and reapplied as shown in the third figure. The external force causes the sleeve 3 to be displaced toward the rear of the rod body 1, and the rear engagement groove 311 of the sleeve 3 can engage the C-shaped buckle 2, and the third guiding slope 312 at the rear end of the sleeve 3 can facilitate the C-shaped buckle 2 when assembled. The sleeve 3 can be easily inserted into the engaging groove 311 to interlock with the sleeve 3, and the C-shaped buckle 2 portion can protrude outside the engaging groove 311.

Please refer to the fourth and fifth figures. When the C-type buckle 2 is engaged with the first positioning groove 14 of the rod body 1, the rear side of the sleeve 3 can be located at the position of the positioning portion 16 behind the working portion 12 of the rod body 1, and The ball 192 at the position of the front engaging end 172 and the second groove 19 of the working section 12 of the rod body 1 can be exposed, and the sleeve hole 51 of the outer sleeve 5 can be inserted in front of the working section 12, and the ball 192 can be externally The sleeve hole 51 of the sleeve 5 is elastically engaged, and when the C-shaped buckle 2 is engaged with the first positioning groove 14, the rear end of the sleeve 3 can abut against the dam 13 of the rod body 1, and the inner wall of the joint portion 32 can be The ball 182 at the position of the first groove 18 is elastically abutted for better positioning stability, and the first stop surface 142 of the first positioning groove 14 abuts against the C-shaped buckle 2 to ensure that the C-shaped buckle 2 does not backward. The displacement is separated from the first positioning groove 14.

Referring to the sixth and seventh figures, the present invention enables the sleeve 3 to be displaced by the displacement of the C-shaped buckle 2 corresponding to the second positioning groove 15 when the sleeve 3 is moved forward, so that the sleeve hole 322 of the joint portion 32 of the sleeve 3 can be externally The sleeve 322 is protruded from the outside of the working section 12, so that the sleeve 322 can be used for the sleeve 6 to be used. When the sleeve 3 is displaced, the first guiding surface 141 of the first positioning slot 14 can be used to facilitate the C-shaped buckle 2 The second guiding groove 151 of the second positioning groove 15 can facilitate the introduction of the C-shaped buckle 2 into the second positioning groove 15 , and the rear retaining edge 171 of the engaging portion 17 of the rod body 1 can abut against the C-shaped buckle 2 . In order to limit the sleeve 3 from moving forward again, it can be ensured that the sleeve 3 can only be axially displaced from the rod body 1 and does not disengage from the rod body 1, and the inner wall of the joint portion 32 of the sleeve 3 can simultaneously be combined with the rod body 1. The balls 182, 192 on the first and second grooves 18, 19 are resiliently joined to provide better positioning stability.

Referring to the seventh and eighth figures, the second guiding groove 151 of the second positioning groove 15 can facilitate the removal of the C-shaped buckle 2 when the sleeve 3 is moved back to the state in which the C-shaped buckle 2 is engaged with the first positioning groove 14. The two positioning grooves 15 can have better displacement and operation convenience. After the use of the present invention, the magnetic member 173 may adsorb the iron filings 7 attached to the surface of the screwdriver head 6 or external screws (not shown). Having the sleeve 3 moved back exposes the magnetic element 173, which facilitates removal of the iron filings 7 of the magnetic element 173 to enhance the magnetic element absorbing the screwdriver head 6 or screw stability.

The first and second positioning grooves 14 and 15 of the original design are the smaller diameter portions of the working portion 12 of the rod body 1. When the driving rod rotates to generate a torsion force, the stress is concentrated on the working end of the head, and the positioning grooves 14, 15 can be dispersed. The structure can extend the service life of the tool, and when the driving rod rotates more than the set torque, the rod body 1 can be broken at the position of the first positioning groove 14 or the second positioning groove 15, thereby preventing the rod body 1 from being scattered and flying. The utility model has the advantages of better safety. However, the sleeve 3 is not disengaged from the rod body 1 after the combination, and the sleeve 3 can be instantaneously detached during the rotation operation, and the safety and reliability of the sleeve can be better.

Therefore, according to the above, the present invention can improve the stability of the driving rod of the power tool and the safety of use, and the foregoing embodiment is an example of the creation, which is not a limitation of the creation, and is equivalent to the spirit of the present creation. Changes should also fall within the scope of this creation.

1‧‧‧ rod body
11‧‧‧Docking section
12‧‧‧Working section
13‧‧‧ 垣
14‧‧‧First positioning slot
141‧‧‧First guiding slope
142‧‧‧First stop
15‧‧‧Second positioning slot
151‧‧‧Second inclined slope
16‧‧‧ Positioning Department
17‧‧‧ joints
171‧‧ ‧ blocking edge
172‧‧‧ joint end
173‧‧‧Magnetic components
18‧‧‧First groove
181‧‧ ‧ spring
182‧‧‧ balls
19‧‧‧second groove
191‧‧ spring
192‧‧‧ balls
2‧‧‧C buckle
3‧‧‧ sleeve
31‧‧‧ Sockets
311‧‧‧ joint groove
312‧‧‧ Third guiding bevel
32‧‧‧joining section
321‧‧‧Transfer trough
322‧‧‧ hole sets
4‧‧‧Rotating head
5‧‧‧External sleeve
51‧‧‧ hole sets
6‧‧‧ screwdriver head
7‧‧‧ Iron filings

The first picture is an exploded view of the creation.

The second picture is a schematic diagram of the combined action of the sleeve and the C-shaped buckle and the rod body.

The third picture is a schematic diagram of the combination of the sleeve and the C-shaped buckle and the rod body of the present invention.

The fourth figure is a perspective view of the sleeve of the present invention positioned at the rear of the working section of the shaft.

The fifth figure is a schematic view of the sleeve of the present invention positioned at the rear of the working section of the rod body and engaging the outer sleeve.

The sixth figure is a schematic view of the position of the sleeve of the present invention positioned in front of the working section of the rod body.

The seventh figure is a schematic diagram of the sleeve of the present invention positioned in front of the working section of the rod body and the joint driver head.

The eighth figure is a schematic diagram of the iron scrap on the surface of the magnetic component by the sleeve moving back.

1‧‧‧ rod body

11‧‧‧Docking section

12‧‧‧Working section

13‧‧‧ 垣

14‧‧‧First positioning slot

141‧‧‧First guiding slope

15‧‧‧Second positioning slot

151‧‧‧Second inclined slope

16‧‧‧ Positioning Department

17‧‧‧ joints

171‧‧ ‧ blocking edge

172‧‧‧ joint end

173‧‧‧Magnetic components

182‧‧‧ balls

192‧‧‧ balls

2‧‧‧C buckle

3‧‧‧Sleeve

31‧‧‧ Sockets

311‧‧‧ joint groove

312‧‧‧ Third guiding bevel

32‧‧‧joining section

321‧‧‧Transfer trough

322‧‧‧ hole sets

Claims (9)

A driving rod structure of a power tool, and the driving rod comprises: a rod body, an elongated body body, and a rear end portion having a connecting portion engageable with the rotating head of the power tool, and the rod body is a working section in front of the plugging portion, And a recessed first positioning slot is disposed behind the working section, and a second positioning slot is formed in the axial direction corresponding to the first positioning slot in the working section, and the working section is corresponding to the first and second positioning slots. And in the working section, the axial direction corresponds to the non-circular joint portion of the second positioning groove, and the joint has a width larger than the retaining edge of the positioning portion, and the joint end is disposed at the front end of the working section; The sleeve is disposed at the position of the positioning portion of the rod body; a sleeve has a sleeve portion which can be fitted with the rod body and can be displaced at the positioning portion of the rod body, and the front portion of the sleeve portion can be sleeved with the joint portion of the rod body and The joint portion of the sleeve portion is rotated, and the rear inner wall of the sleeve portion is provided with an engagement groove recessed toward the inner wall and engaging the volume of the C-shaped buckle portion, and the sleeve portion has a sleeve hole for engaging the external tool assembly. And the C-shaped buckle is disposed on the first positioning of the rod body Position, and then sleeve the sleeve body so that the rear groove of the sleeve can engage the C-type buckle, and the C-type buckle is interlocked with the sleeve and the sleeve does not disengage from the rod body, and the sleeve is moved backward to make the C-type When the buckle is engaged with the first positioning groove, the front engagement end of the working portion of the rod body can be convexly protruded outside the sleeve, and the sleeve is moved forward to make the sleeve hole of the sleeve be convex when the C-shaped buckle is engaged with the second positioning groove. The position in front of the pole. The driving rod structure of the power tool according to claim 1, wherein the front side of the first positioning groove of the rod body has a first guiding inclined surface inclined toward the front, and the rear side has a first gear corresponding to the axial direction of the rod body. The second positioning groove has a second guiding slope which is inclined toward the rear. The driving rod structure of the power tool according to the second aspect of the invention, wherein the working portion of the working portion of the rod body and the connecting portion have a diameter larger than the working portion, and the first positioning groove is disposed in front of the blocking portion. The position, and the C-shaped buckle is located at the first positioning groove position, the rear end of the sleeve can abut against the dam. The driving rod structure of the power tool according to the first, second or third aspect of the invention, wherein the first and second positioning grooves of the rod body are smaller diameter portions of the working portion of the rod body. The driving rod structure of the power tool according to claim 1, wherein the rear side of the engaging groove of the sleeve is disposed at a rear side of the socket portion to a third leading inclined surface which is expanded toward the rear end diameter. The driving rod structure of the power tool according to the first, second or third aspect of the invention, wherein the joint portion of the rod body is respectively provided with first and second grooves corresponding to the radial rear and front positions of the rod body, and the first and second portions are respectively The grooves respectively engage the spring and the balls are placed at the top of the spring. The driving rod structure of the power tool according to claim 6, wherein the inner wall of the engaging portion of the sleeve is axially disposed with a guiding groove that can abut against the rod body ball. The driving rod structure of the power tool according to claim 1, wherein the joint end diameter of the rod body is smaller than the joint portion, and the magnetic member is disposed at the joint end. The driving rod structure of the power tool according to the first, second or third aspect of the invention, wherein the positioning portion of the rod body is a cylindrical body.