TW201536489A - Telescopic rod used for manual tool - Google Patents

Abstract

A telescopic rod used for manual tool comprises an inner tube, an external tube sleeved to the inner tube, and a positioning component disposed to the external tube. The positioning component comprises a sliding block, a positioning bolt, and an operating button. The sliding block is slidably disposed to the external tube and has a push portion and a guide slot openly disposed to the push portion. The positioning bolt is movably pass through the guide slot of the sliding block in axial direction and abutted against the push portion of the sliding block. The operating button is connected to the sliding block through a connection member to drive the sliding block to move. Accordingly, when the sliding block is pulled by the operating button to axially move along the external tube, the push portion of the sliding block would push the positioning bolt to allow the bottom end of the positioning bolt to be released from a positioning hole of the inner tube. At this time, the relative position between the inner and external tubes can be adjusted to achieve the purpose of adjusting the length.

Description

Telescopic rod for hand tools

The invention relates to a telescopic rod for a hand tool, in particular to a telescopic rod which is simple in structure and convenient to operate.

In order to meet different usage distances, general hand tools (such as garden shears) have a design that can be adjusted in length to increase the convenience of use. For example, Taiwan Patent No. 556480 discloses a "garden shear telescopic rod improved structure". When the user presses the push button down, the positioning block of the slider can be disengaged from the positioning concave edge of the inner tube. Use the sliding of the slider to adjust the length of the inner tube until the inner tube is moved to the appropriate length, and then release the button, the button will be pushed by the elastic member to force the positioning block and the inner tube of the slider. Another positioning recess forms a snap to complete the positioning of the inner tube.

However, in the above patent case, the snap button and the slider are engaged by the card edge of the binding post and the slot of the stud, and then the plug is inserted through the plug of the push button and resists The fixing between the two is completed at the bottom of the slider slot of the slider. Overall, the structural design of this patent is still somewhat complicated, which will inevitably lead to an increase in manufacturing costs.

The main object of the present invention is to provide a telescopic rod for a hand tool which is simple in structure and convenient to operate, and can reduce manufacturing cost.

In order to achieve the foregoing object, the telescopic rod of the present invention includes an inner portion a tube, an outer tube, and a positioning assembly. The inner tube has a plurality of positioning holes arranged at intervals; the outer tube can be sleeved on the inner tube along the axial movement of the inner tube, the outer tube has a first hollow groove at one end, and the outer tube has another One end has a second hollow slot; the positioning component has a mounting seat, a slider, an operating button, a connecting member, a positioning bolt, and a first returning elastic member, the mounting seat is sleeved on the outer tube One end has a mounting slot, the mounting slot communicates with the first hollow slot of the outer tube, and the slider is movably disposed along the axial direction of the outer tube to the first hollow slot of the outer tube and the mounting of the mounting seat In the slot, and having a push top and a guide groove formed on the push top, the operation button is movably disposed along the axial direction of the outer tube at the other end of the outer tube and corresponds to the second end of the outer tube The slat is disposed in the outer tube and is connected to the slider and the operating button at two ends thereof, and the positioning pin is movably disposed on the mounting seat along the axial direction thereof and can pass through the slider The guiding groove is selectively inserted into one of the positioning holes of the inner tube, and the positioning pin has an outer portion Edge, the outer flange abuts against the top of the slider of the push, the first resetting spring member sleeved on the positioning pin between the outside and abutting against the inner circumferential surface of the mount flange with the positioning pin.

Thereby, when the slider is pulled by the operation button and moves along the axial direction of the outer tube, the push top of the slider pushes the outer flange of the positioning bolt, so that the bottom end of the positioning bolt is separated from the The positioning hole of the inner tube can be adjusted by pulling or pulling the outer tube at this time.

Preferably, the positioning assembly further has a second returning elastic member that is abutted between a blocking wall of the mounting seat and an outer end surface of the slider for the slider Provides a reset force.

Preferably, the positioning component further has a spring piece, and the elastic piece is offset One end of the elastic piece is fixed to the mounting seat, and the other end of the elastic piece has a through hole, and the through hole is pierced by the bottom end of the positioning pin. Thereby, the slider can push the outer flange of the positioning pin by the elastic piece when moving, so as to increase the accuracy of the positioning pin.

10‧‧‧ Telescopic rod

20‧‧‧Inside

21‧‧‧ inner tube

22‧‧‧Positioning holes

23, 24‧‧‧ end cover

30‧‧‧External management

31‧‧‧Outer body

32‧‧‧First empty slot

33‧‧‧Second empty slot

34‧‧‧ grip cover

35‧‧‧Inlay

40‧‧‧ Positioning components

41‧‧‧ Mounting

42‧‧‧ Slider

421‧‧‧ push top

422‧‧‧Bevel

423‧‧‧ horizontal bottom

424‧‧‧ Guide groove

425‧‧‧Bump

43‧‧‧ operation button

44‧‧‧Connecting parts

45‧‧‧Shrap

451‧‧‧First horizontal section

452‧‧‧Second horizontal section

453‧‧‧Sloping section

454‧‧‧Fixed holes

455‧‧‧Perforation

46‧‧‧ Positioning bolt

462‧‧‧ outer flange

47‧‧‧First reset elastic

48‧‧‧Second reduction elastic

50‧‧‧Base

52‧‧‧ Cover

53‧‧‧Installation slot

54‧‧‧stop wall

55‧‧‧Fixed convex

56‧‧‧Limited holes

Figure 1 is a perspective view of the present invention.

Figure 2 is a partial exploded perspective view of the present invention.

Fig. 3 is a side view of the present invention, mainly showing the state before the length adjustment.

Figure 4 is a partial cross-sectional view of the present invention, mainly showing the flange outside the positioning bolt

The state that has not been pushed up.

Figure 5 is similar to Figure 4, which mainly shows that the flange outside the positioning bolt is blocked by the slider.

Push the top to push up.

Fig. 6 is similar to Fig. 3 and mainly shows the state after the length adjustment.

Referring to Figures 1 and 2, the telescopic rod 10 of the present invention is mainly used in conjunction with garden shears, and includes an inner tube 20, an outer tube 30, and a positioning assembly 40.

The inner tube 20 has an inner tubular body 21, and the inner tubular body 21 has a plurality of positioning holes 22 arranged at intervals, and end portions 23 and 24 are respectively inserted at both ends of the inner tubular body 21.

The outer tube 30 has an outer tube body 31, and the outer tube body 31 is axially movably sleeved on the inner tube 20. Further, the outer tube body 31 has a first hollow groove 32 at the front end and a rear end portion of the outer tube body 31. The second hollow groove 33. In addition, the outer tube 30 There is further provided a grip sleeve 34. The grip sleeve 34 is sleeved on the rear end of the outer tubular body 31 and has a fitting groove 35. The position of the recessed groove 35 corresponds to the second hollow groove 33 of the outer tubular body 31.

As shown in FIGS. 2 and 4, the positioning assembly 40 has a mounting seat 41, a slider 42, an operating button 43, a connecting member 44, a resilient piece 45, a positioning pin 46, and a first returning elastic member 47. And a second returning elastic member 48, wherein the mounting seat 41 has a base 50 and a cover 52. The base 50 is sleeved on the front end of the tubular body 31 outside the outer tube 30 and has a mounting groove 53 corresponding to the first hollow groove 32, a stopping wall 54 located behind the mounting groove 53, and a fixing in front of the mounting groove 53. The cover portion 52 is fixed to the top surface of the base 50 to shield the mounting groove 53 and defines a limiting hole 56 that communicates with the mounting groove 53.

The slider 42 can be embedded in the first hollow groove 32 of the outer tube 30 and the mounting groove 53 of the mounting seat 41 along the axial direction of the outer tube 30, and has a push top 421 and a push top 421. The guide groove 424 has a slope 422 and a horizontal bottom surface 423 (as shown in FIGS. 2 and 4) that engages the slope 422. The guide groove 424 extends downward from the slope 422 to the horizontal bottom surface 423. In addition, one of the outer end faces of the slider 42 extends toward the blocking wall 54 of the mounting seat 41 to extend a stud 425.

The operating button 43 is movably embedded in the recess 35 of the grip sleeve 34 of the outer tube 30 to correspond to the second hollow slot 33 of the outer tube 30, as shown in Figures 1 and 2.

The connecting member 44 is exemplified by a steel cable, and the connecting member 44 is externally disposed. The slider 42 and the operation button 43 are respectively connected to the tube 31 outside the tube 30, and the operation button 43 can synchronously drive the slider 42 to move when subjected to an external force.

As shown in Figures 2, 4 and 5, the elastic piece 45 has a first horizontal section 451, a second horizontal section 452, and a sloped section 453. The first horizontal section 451 has a fixing hole 454, and the fixing hole 454 is sleeved. In the fixing protrusion 55 of the mounting seat 41, the second horizontal section 452 abuts against the horizontal bottom surface 423 of the pushing top 421 of the slider 42 and has a through hole 455. The through hole 455 communicates with the guiding groove 424 of the slider 42 and the inclined section 453 is connected. The first and second horizontal sections 451, 452 abut against the slope 422 of the push top 421 of the slider 42.

The top end of the positioning pin 46 is axially displaceably disposed in the limiting hole 56 of the cover 52 of the mounting seat 41. The bottom end of the positioning pin 46 is axially displaceably disposed in the through hole 455 of the elastic piece 45 and is slidable. The guide groove 424 of the block 42 is inserted into one of the positioning holes 22 of the inner tube 20 so that the slider 42 does not interfere with the positioning pin 46 during the displacement. Further, the positioning pin 46 has an outer flange 462. And the outer horizontal flange 462 abuts against the second horizontal section 452 of the elastic piece 45, as shown in FIG.

The first returning elastic member 47 (here, a compression spring is taken as an example) is sleeved on the top end of the positioning pin 46 and abuts against the inner circumferential surface of the cover 52 of the mounting seat 41 and the outer flange 462 of the positioning pin 46. Used to provide a reset force to the positioning pin 46.

The second returning elastic member 48 (here, a compression spring is taken as an example) is sleeved on the protruding post 425 of the slider 42 and abuts against the blocking wall 54 of the mounting seat 41 and the outer end surface of the slider 42 for Slider 42 provides a return force.

In actual operation, the operating button 43 is first biased, and the operating button 43 pulls the slider 42 by the connecting member 44 to displace the slider 42. During the displacement of the slider 42, as shown in Fig. 5, on the one hand, the second return elastic member 48 is compressed, and on the other hand, the inclined portion 453 of the elastic piece 45 is pushed by the inclined surface 422 of the push top 421, and the elastic piece at this time 45 will deform and push the outer flange 462 of the positioning bolt 46 upward by the second horizontal section 452, forcing the positioning bolt 46 to move upward and disengage from the positioning hole 22 of the inner tube 20, and the positioning pin 46 is displaced upward. The first return elastic member 47 is simultaneously compressed, and then the length can be adjusted by pulling the inner tube 20 (as shown in Fig. 6) until the inner tube 20 is adjusted to the appropriate position, and then the operation button 43 is released. The slider 42 is returned to the initial position as shown in FIG. 4 by the elastic force of the second return elastic member 48. At this time, the elastic piece 45 is released to the positioning pin 46 by the reset of the slider 42. The thrust of the edge 462 causes the positioning pin 46 to be inserted into the other positioning hole 22 of the inner tube 20 by the elastic force of the first return elastic member 47 to complete the positioning of the inner tube 20.

In summary, the telescopic rod 10 of the present invention utilizes the cooperation between the push top 421 of the slider 42 and the flange 462 of the positioning bolt 46, and the assistance of the elastic piece 45 to achieve the positioning and length adjustment effect, and In contrast to the conventional patent case, the present invention not only effectively simplifies the structure, but also becomes more convenient and reliable in operation, so that the purpose of increasing the usability and reducing the manufacturing cost can be achieved.

20‧‧‧Inside

21‧‧‧ inner tube

22‧‧‧Positioning holes

23, 24‧‧‧ end cover

30‧‧‧External management

31‧‧‧Outer body

32‧‧‧First empty slot

33‧‧‧Second empty slot

34‧‧‧ grip cover

35‧‧‧Inlay

40‧‧‧ Positioning components

42‧‧‧ Slider

422‧‧‧Bevel

424‧‧‧ Guide groove

425‧‧‧Bump

43‧‧‧ operation button

44‧‧‧Connecting parts

45‧‧‧Shrap

451‧‧‧First horizontal section

452‧‧‧Second horizontal section

453‧‧‧Sloping section

454‧‧‧Fixed holes

455‧‧‧Perforation

46‧‧‧ Positioning bolt

462‧‧‧ outer flange

47‧‧‧First reset elastic

48‧‧‧Second reduction elastic

50‧‧‧Base

52‧‧‧ Cover

53‧‧‧Installation slot

54‧‧‧stop wall

55‧‧‧Fixed convex

56‧‧‧Limited holes

Claims (8)

A telescopic rod for a hand tool, comprising: an inner tube having a plurality of positioning holes arranged at intervals; an outer tube being sleeved on the inner tube along an axial direction of the inner tube, the outer tube One end has a first hollow slot, the other end of the outer tube has a second hollow slot; and a positioning component has a mounting seat, a slider, an operating button, a connecting member, a positioning bolt, and a a first returning elastic member, the mounting sleeve is sleeved at one end of the outer tube and has a mounting groove, the mounting groove communicates with the first hollow groove of the outer tube, and the slider is movable along the axial direction of the outer tube Embedded in the first hollow slot of the outer tube and the mounting slot of the mounting seat, the slider has a pushing top and a guiding groove formed on the pushing top, and the operating button can move along the axial direction of the outer tube The connecting member is disposed at the other end of the outer tube and corresponds to the second hollow slot of the outer tube. The connecting member is disposed in the outer tube and is respectively connected to the slider and the operating button at two ends thereof, and the positioning pin can be It is disposed on the mounting seat along the axial direction of itself and can be selectively inserted through the guide groove of the slider In one of the positioning holes of the inner tube, the positioning pin has an outer flange, the outer flange abuts against the push top of the slider, and the first return elastic member is sleeved on the positioning pin and the top is abutted The inner circumferential surface of the mount is between the outer flange of the positioning bolt. The telescopic rod for a hand tool according to claim 1, wherein the push top of the slider has a slope and a horizontal bottom surface that engages the slope, the slope abuts the flange of the positioning bolt, the guide groove The ramp extends from the horizontal bottom surface. The telescopic rod for a hand tool according to claim 2, wherein the positioning assembly further has a spring piece having a first horizontal section, a second horizontal section, and an inclined section, the first horizontal section being fixed In the mounting seat, the second horizontal section abuts the horizontal bottom surface of the push top of the slider and has a through hole, the through hole is pierced by the bottom end of the positioning bolt, the inclined section is connected to the first and second The horizontal section is abutted between the inclined surface of the push top of the slider and the outer flange of the positioning bolt. The telescopic rod for a hand tool according to claim 3, wherein the mounting seat has a fixing protrusion, and the first horizontal section of the elastic piece has a fixing hole, and the fixing hole is sleeved on the fixing protrusion. The telescopic rod for a hand tool according to claim 1, wherein the outer tube has an outer tube body and a grip sleeve, the outer tube body has the first and second hollow slots, and the grip sleeve is sleeved on One end of the outer tube has a slot, and the operating button is movably disposed in the recess of the grip sleeve along the axial direction of the outer tube. The telescopic rod for a hand tool according to claim 1, wherein the mounting seat has a cover plate, the cover plate has a limiting hole, and the top end of the positioning pin is axially movably disposed through the cover plate. In the limiting hole, the first return elastic member abuts between the inner circumferential surface of the cover plate and the outer flange of the positioning bolt. The telescopic rod for a hand tool according to claim 1, wherein the positioning assembly further has a second returning elastic member, the mounting seat has a blocking wall, and the outer end surface of the sliding block has a protruding post, the first The second returning elastic member is sleeved on the protruding post and abuts against the blocking wall of the mounting seat and the outer end surface of the sliding block. The telescopic rod for a hand tool according to claim 1, wherein the connecting member is a steel cable.