TWI811611B - Telescopic tool - Google Patents

Abstract

A telescopic tool includes a first rod, a second rod, and a positioning device. The first rod has a penetrating hole, a first positioning hole communicated with the penetrating hole, and a first grip portion. The second rod is movably inserted through the penetrating hole and has a plurality of second positioning holes. One of the plurality of second positioning holes can be aligned to the first positioning hole. The positioning device includes a guiding switch, a positioning member, a fixing member, and an elastic abutting member. The guiding switch is movable in relation to the first rod and movably connected to the positioning member. The positioning member is movably inserted through the first positioning hole and corresponds the relative motion of the guiding switch and the first rod to be detachably engaged in one of the plurality of second positioning holes to cause the second rod being movable in relation to the first rod for adjusting the length of the telescopic tool. The fixing member includes a second grip portion. Thus, the first grip portion and the second grip portion can be separately held by both hands. The elastic abutting member is pivotally connected to the first rod and abuts against the elastic abutting member.

Description

telescopic tool

The present invention relates to a telescopic tool, in particular to a telescopic tool that can be held by both hands.

Existing retractable tools such as Taiwan Patent Announcement No. 554799 include a hand tool handle, a fitting ring and an extension rod. The extension rod is hollow for the handle to extend into, and one end of the sleeve ring is for the extension rod to be inserted and fixed. The other end of the sleeve ring is an eccentric inner wall. The eccentric inner wall enters the ring sleeve and is limited to prevent outward movement. An arc circle is raised at a predetermined position on the outer periphery of the ring sleeve and is pivotally connected to the pressing column. Use a fitting ring and an extension rod for the handle to extend in, and the ring sleeve covers the handle. The handle or extension rod is relatively rotated so that the loop sleeve is within the eccentricity of the fitting ring to avoid deflection. When the arc circle enters the narrow area of the eccentric inward retraction, the ring sleeve is squeezed and tightens the handle, and the steel pressing column top is pressed against the eccentric inner wall of the handle and the sleeve ring to tighten.

However, the above-mentioned telescopic tools cannot allow the user's hand to hold the fitting ring, because during use, as long as force is accidentally applied to the fitting ring, the handle and the extension rod will become loose, and it will not be able to cope with the problem. In the workplace, the working part at the front end of the hand tool handle is replaced.

Therefore, how to overcome the above-mentioned various problems of existing telescopic tools has become an urgent issue to be solved.

The present invention provides a telescopic tool that can provide a stable locking effect through a positioning device disposed between a first rod and a second rod, and the user's hands can hold the first holding portion and the second rod respectively. The second holding part is used to facilitate the operation of the cutting control guide.

The telescopic tool provided by the invention includes a first rod, a second rod and a positioning device. The first rod has a through hole, a first positioning hole and a first holding part. The first positioning hole communicates with the through hole, and the first holding part is arranged on the outer peripheral surface of the first rod. The second rod is movably inserted through the through hole and has a plurality of second positioning holes. The plurality of second positioning holes are provided on the outer peripheral surface of the second rod, and any one of the plurality of second positioning holes corresponds to The second rod moves relative to the first rod to align with the first positioning hole. The positioning device is disposed between the first rod and the second rod and includes a cutting guide, a positioning part, a fixing part and an elastic butt. The cutting control guide can move relative to the first rod and is movably connected to the positioning member. The positioning member is movably inserted into the first positioning hole and can be detachably engaged with any second positioning hole as the cutting control guide moves relative to the first rod. The fixing member has a third positioning hole that is sleeved on the first rod. The two holding parts, the first holding part and the second holding part can be held by both hands respectively, and the elastic contact member is pivotably connected to the first rod member and abuts against the positioning member.

In one embodiment of the present invention, the elastic contact member is formed by bending a metal sheet to form a fixed end connected to the first rod, a contact end that contacts the top surface of the positioning member, and at least one contact end located at the fixed end and the contact member. The turning point between the ends. The abutting end pivots relative to the first rod as the positioning member moves relative to the first positioning hole.

In one embodiment of the present invention, the cutting control guide includes a guide portion, which is formed by bending a metal sheet to have a first connection end, a second connection end opposite to the first connection end, and a second connection end located at the first connection end. and the second connecting end. The second connecting end is movably connected to the positioning component. The guide section is arc-shaped, and the horizontal height of the guide section is higher than the horizontal height of the second connection end, so that there is a height difference between the guide section and the second connection end. The positioning device includes an elastic member, and the opposite ends of the elastic member are respectively Contacting the first rod and the first connecting end.

In an embodiment of the invention, the positioning member has a neck portion. The guide part has a guide groove, which extends from the second connecting end along the guide section and is movably engaged with the neck, so that the positioning piece is driven by the guide part and can be detachably engaged with any second positioning hole. .

In one embodiment of the present invention, the fixing member has a fixing part sleeved on the second rod and a slide groove provided on the fixing part and the second holding part. The cutting control guide is movably disposed in the chute in a direction parallel to the second rod. The cutting control guide includes a button and a slider. The button is integrally connected to the slider and exposed to the chute. The bottom surface of the button is provided with a contact surface. The contact surface is arc-shaped and contacts the guide section. The slider The block is fixedly connected to the first connection end.

In one embodiment of the present invention, the top surface of the button is provided with a first part and a second part connected to the first part. The height of the first part exposed to the chute shall not be greater than 1 cm. The horizontal height of the first part is lower than the horizontal height of the second part, so that there is a height difference of not less than 1 cm between the first part and the second part.

In an embodiment of the present invention, the button has two wings, and the two wings are respectively arranged on opposite sides of the button. The fixing piece has two limiting grooves, the two limiting grooves are respectively arranged on opposite sides of the chute, and the two wings are movably arranged on the two limiting grooves.

In one embodiment of the present invention, a metal reinforcement member is provided on the inner peripheral surface of the second holding part of the fixing member.

In an embodiment of the present invention, the first rod member has a first through hole communicating with the through hole. The outer circumferential surface of the second rod member has a locking groove on a side opposite to the plurality of second positioning holes. The second grip has a second perforation aligned with the first perforation. The positioning device includes a limiter. The limiter is detachably disposed through the second through hole and the first through hole and contacts the chute. The limiter selectively blocks the movement of the second rod relative to the first rod. at the end of the chute.

In one embodiment of the present invention, a working part is provided at the end of the second rod, and the working part is one of a crowbar head, a connecting rod or a wrench.

Based on the above, the telescopic tool provided by the above embodiments of the present invention avoids unexpected loosening through the positioning device, and the first holding part and the second holding part can be held by the user's hands respectively, so that the user can The hand holding the second holding part can easily switch the cutting control guide between the locking position and the releasing position.

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, embodiments are given below and described in detail with reference to the accompanying drawings.

Figure 1 is a schematic diagram of the appearance of a telescopic tool according to an embodiment of the present invention. FIG. 2 is an exploded view of the telescopic tool shown in FIG. 1 . Figures 3 and 4 are respectively partially enlarged cross-sectional views of the telescopic tool shown in Figure 1. Please refer to FIGS. 1 to 4 . The telescopic tool of this embodiment includes a first rod 10 , a second rod 20 and a positioning device 30 disposed between the first rod 10 and the second rod 20 .

The first rod 10 has a through hole 11 , a first positioning hole 12 , a first through hole 13 and a first holding portion 14 . The through hole 11 penetrates at least one end of the first rod 10 along the axial direction of the first rod 10 . The first positioning hole 12 penetrates the peripheral surface of the first rod 10 along the radial direction of the first rod 10 and communicates with the through hole 11 . The first through hole 13 penetrates the peripheral surface of the first rod 10 along the radial direction of the first rod 10 and communicates with the through hole 11 , and is located on the side of the first rod 10 opposite to the first positioning hole 12 . The first holding portion 14 is provided on the outer peripheral surface of the first rod 10 and is located on the side of the first rod 10 opposite to the first positioning hole.

The second rod 20 is movably inserted through the through hole 11 of the first rod 10 and has a plurality of second positioning holes 21 and a locking groove 22 . A plurality of second positioning holes 21 are provided on the outer circumferential surface of the second rod 20. In this embodiment, a plurality of second positioning holes 21 can be formed and equidistantly arranged on the outer peripheral surface of the second rod 20, and any second The positioning hole 21 can be aligned with the first positioning hole 12 corresponding to the movement of the second rod 20 relative to the first rod 10 . The clamping groove 22 is provided on the outer peripheral surface of the second rod 20 and extends along the axial direction of the second rod 20 . The clamping groove 22 is located on the side of the second rod 20 opposite to the plurality of second positioning holes 21 . A working part 23 is provided at the end of the second rod 20 . In this embodiment, the working part 23 is a pry bar head and can be used to pry open objects.

The positioning device 30 includes a control guide member 31 and a positioning member 32 . The cutting control guide 31 can move relative to the first rod 10 in a direction parallel to the second rod 20 to change between the locking position and the releasing position. The cutting control guide 31 includes a button 311 , a slider 312 and a guide part 33 . The button 311 is integrally connected to the slider 312 . The slider 312 is connected to the guide part 33, and the guide part 33 is movably connected to the positioning part 32, so that when the cutting control guide 31 moves relative to the first rod 10, the button 311, the slider 312 and the guide part 33 can move simultaneously.

The positioning member 32 is movably inserted into the first positioning hole 12 along the radial direction of the first rod 10 , and is detachably engaged with any second positioning hole 21 as the guide portion 33 moves relative to the positioning member 32 . The positioning member 32 has a neck portion 321 .

The guide part 33 has a first connection end 331, a second connection end 332 opposite to the first connection end 331, a guide section 333 located between the first connection end 331 and the second connection end 332, and a guide section 333. slot 334. In this embodiment, the guide portion 33 can be bent from a metal sheet to form a first connecting end 331 , a second connecting end 332 and a guide section 333 . The first connecting end 331 is fixed to the slider 312 . The second connecting end 332 is movably connected to the neck portion 321 of the positioning member 32 . The guide section 333 is arc-shaped, and the horizontal height of the guide section 333 is higher than the horizontal height of the second connecting end 332 , so that there is a height difference between the guide section 333 and the second connecting end 332 . The guide groove 334 extends from the second connecting end 332 along the guide section 333 and is movably engaged with the neck 321 of the positioning member 32 . When the cutting control guide 31 moves relative to the first rod 10 , the guide portion 33 moves relative to the positioning member 32 , due to the height difference between the guide section 333 and the second connecting end 332 and the arc shape of the guide section 333 . It is designed so that the positioning member 32 is guided by the guide groove 334 and moves relative to the first positioning hole 12 along the radial direction of the first rod 10 , thereby being able to engage or disengage any second positioning hole 21 .

The positioning device 30 also includes a fixing part 34, an elastic part 35 and a limiting part 36. The fixing member 34 includes a fixing portion 341 that is sleeved on the second rod 20 and a second holding portion 342 that is sleeved on the first rod 10 . The fixing member 34 is provided with a sliding groove 343 on the fixing part 341 and the second holding part 342. The button 311 can move through the slide groove 343 in a direction parallel to the second rod 20 and is exposed in the slide groove 343, so as to facilitate the user to switch the locking position and the release position. The second holding portion 342 has a second through hole 344 aligned with the first through hole 13 . The second holding portion 342 has an axial length L342 along the extending direction of the first rod 10 , and the axial length L342 is not less than 8 centimeters for the user to hold.

Further, as shown in FIG. 3 , the top surface of the button 311 is provided with a first part 313 and a second part 314 connected to the first part 313 . The height of the first part 313 exposed from the chute 343 is no more than 1 cm, and the first part 313 can be provided with anti-slip texture. The horizontal height of the first part 313 is lower than the horizontal height of the second part 314, so that there is a height difference H314 of not less than 1 cm between the first part 313 and the second part 314. Thereby, the user can use the second part 314 to protrude the chute 343 from the first part 313 to facilitate turning the button 311, and the height of the first part 313 exposed to the chute 343 is not more than 1 cm and the height difference H314 is not less than The 1 cm design can prevent the button 311 from being broken and damaged when the telescopic tool accidentally falls and hits the ground.

In addition, the fixing part 34 is provided with a metal reinforcement 345 on the inner circumference of the second holding part 342, so the fixing part 34 can be made of plastic material, and the structural strength is maintained through the reinforcement 345, and the reinforcement 345 It can be a C-shaped ring, and its opening can correspond to the chute 343 .

The bottom surface of the button 311 is also provided with a contact surface 315. The abutment surface 315 is arc-shaped and contacts the guide section 333, so that there is surface contact between the button 311 and the guide section 333. The button 311 has two wing portions 316, and the two wing portions 316 are respectively provided on opposite sides of the button 311. The fixing member 34 has two limiting grooves 346 , and the two limiting grooves 346 are respectively provided on opposite sides of the slide groove 343 . The two wing portions 316 are movably connected to the two limiting grooves 346 so that the button 311 can move smoothly relative to the slide groove 343 without leaving the slide groove 343 .

The opposite ends of the elastic member 35 are respectively in contact with one end of the first rod 10 and the first connecting end 331 of the guide part 33. Due to the elastic restoring force provided by the elastic member 35, the cutting control guide 31 is not The locking position is maintained when the force is applied. In this embodiment, the elastic member 35 can be a compression spring and is sleeved on the second rod 20 .

The limiting member 36 is detachably disposed through the second through hole 344 and the first through hole 13 to contact the slot 22 . The limiting member 36 selectively blocks the movement of the second rod 20 relative to the first rod 10 . One end of the slot 22 prevents the second rod 20 from being arbitrarily separated from the first rod 10 when the control guide 31 is in the release position.

The positioning device 30 further includes an elastic stop 37 , which is pivotably connected to the first rod 10 and abuts against the positioning member 32 . Furthermore, the elastic contact member 37 is made of a metal sheet bent to form a fixed end 371 connected to the first rod 10 adjacent to the first positioning hole 12 and a contact end 372 abutting against the top surface of the positioning member 32 and at least one turning portion 373 located between the fixed end 371 and the abutting end 372 . The fixed end 371 can be fixed to the first rod 10 through screw connection or other means. The contact end 372 pivots relative to the first rod 10 as the positioning member 32 moves relative to the first positioning hole 12 , and the contact end 372 constantly exerts a pressing force on the top surface of the positioning member 32 to help the positioning member 32 snap into place. Connected to the second positioning hole 21.

Please refer to FIG. 3 and FIG. 4 , which shows that the cutting control guide 31 is in the locked position. The neck 321 of the positioning member 32 is engaged with the guide groove 334 of the guide part 33 and corresponds to the second connecting end 332. At this time, the positioning member 32 is engaged with one of the second positioning holes 21, so that the second rod 20 It cannot move relative to the first rod 10 .

Please refer to FIGS. 5 and 6 , the user can apply force on the button 311 to make the cutting guide 31 move relative to the first rod 10 and the slide 343 in a direction parallel to the second rod 20 and from the locked position. Shift to release position. The guide part 33 moves relative to the positioning member 32, so that the neck part 321 of the positioning part 32 is engaged with the guide groove 334 of the guide part 33 and away from the second connecting end 332, and the neck part 321 corresponds to the guide section 333. The height difference between the guide section 333 and the second connecting end 332 and the arc-shaped design of the guide section 333 cause the positioning member 32 to be guided by the guide groove 334 and relative to the first positioning hole along the radial direction of the first rod 10 12 moves, and then disengages from the previously engaged second positioning hole 21 , and the contact end 372 of the elastic resistor 37 pivots relative to the first rod 10 as the positioning member 32 moves relative to the first positioning hole 12 . At this point, the second rod 20 can move arbitrarily relative to the first rod 10 so that the other second positioning hole 21 is aligned with the first positioning hole 12 . Furthermore, the user can also adjust the limiting member 36 at this time, so that the limiting member 36 is separated from the slot 22 of the second rod 20, so that the second rod 20 can be completely separated from the first rod 10 for replacement. Another second rod 20 with a different type of working part 23 (as described in the other two embodiments).

In addition, as shown in FIG. 6 , when the other second positioning hole 21 has been aligned with the first positioning hole 12 , the user stops exerting force on the dial button 311 , and the elastic restoring force of the elastic member 35 pushes the cutting control guide 31 back. to the locked position. The guide part 33 moves relative to the positioning member 32, and the previous neck part 321 corresponding to the guide section 333 returns to the corresponding second connecting end 332. At the same time, the positioning member 32 is guided by the guide groove 334 to move relative to the first positioning hole 12 along the radial direction of the first rod 10 and engages with the other second positioning hole 21 , and the contact end 372 of the elastic contact member 37 As the positioning member 32 moves relative to the first positioning hole 12, it pivots relative to the first rod 10, and exerts a pressing force on the top surface of the positioning member 32 to help the positioning member 32 engage with the other second positioning hole 21. . At this point, the length of the telescopic tool has been adjusted, and the second rod 20 cannot move relative to the first rod 10 to provide a stable locking effect.

The first gripping part 14 and the second gripping part 342 can be held by the user's hands respectively, and the hand holding the second gripping part 342 can also easily switch the cutting control guide 31 , so that the cutting control guide 31 Changes between locked and released positions. In addition, the first holding part 14 can also be provided with embossed patterns to increase friction when holding.

Figures 7 and 8 are respectively schematic views of the appearance of telescopic tools according to other two embodiments of the present invention. Please refer to Figure 7. The working part 23a of the second rod 20a can be a rod head; the working part 23b of the second rod 20b in Figure 8 can be a wrench, such as a reversing ratchet wrench. Therefore, the user can replace different second rods 20, 20a, and 20b according to work requirements.

To sum up, the telescopic tool of this embodiment avoids unexpected loosening through the positioning device 30, and the first gripping part 14 and the second gripping part 342 can be held by the user's hands respectively, so that the grip is The hand of the second holding portion 342 can easily switch the cutting control guide 31 between the locking position and the releasing position.

Although the present invention has been disclosed above through embodiments, they are not intended to limit the present invention. Anyone with ordinary knowledge in the technical field may make some modifications and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the appended patent application scope.

10:The first member 11:Through hole 12: First positioning hole 13: First piercing 14: First gripping part 20:Second rod 21: Second positioning hole 22:Card slot 23:Work Department 30: Positioning device 31: Cutting control guide 311:Dial button 312:Slider 313:The first part 314:Second part H314: Height difference 315: Contact surface 316:Wing 32: Positioning parts 321:Neck 33: Guidance Department 331: First connection end 332: Second connection terminal 333: Guidance section 334:Guide groove 34: Fixtures 341: Fixed part 342: Second grip part L342: Axial length 343:Chute 344: Second piercing 345:Reinforcement parts 346:Limit slot 35: Elastic parts 36:Limiting piece 37: Elastic backing piece 371: Fixed end 372:Butt end 373: Turning point 20a:Second member 23a:Work department 20b: The second member 23b:Work department

Figure 1 is a schematic diagram of the appearance of a telescopic tool according to an embodiment of the present invention. FIG. 2 is an exploded view of the telescopic tool shown in FIG. 1 . Figures 3 and 4 are respectively partially enlarged cross-sectional views of the telescopic tool shown in Figure 1, showing that the positioning member is engaged with the second positioning hole. Figure 5 is a continuation of Figure 4, showing that the positioning member is separated from the second positioning hole. Figure 6 is a continuation of Figure 4, showing that the positioning member is clamped into another second positioning hole. Figure 7 is a schematic view of the appearance of a telescopic tool according to another embodiment of the present invention. Figure 8 is a schematic view of the appearance of a telescopic tool according to yet another embodiment of the present invention.

10:The first member

12: First positioning hole

14: First gripping part

20:Second rod

21: Second positioning hole

23:Work Department

31: Cutting control guide

311:Dial button

312:Slider

313:The first part

314:Second part

316:Wing

32: Positioning parts

321:Neck

33: Guidance Department

333: Guidance section

334:Guide groove

34: Fixtures

341: Fixed part

342: Second grip part

343:Chute

346:Limit slot

35: Elastic parts

37: Elastic backing piece

Claims (10)

A scalable tool that includes: A first rod having a through hole, a first positioning hole and a first holding part, the first positioning hole is connected to the through hole, and the first holding part is provided on the outer peripheral surface of the first rod; A second rod movably passes through the through hole and has a plurality of second positioning holes. The plurality of second positioning holes are provided on the outer peripheral surface of the second rod, and any one of the plurality of second positioning holes The second positioning hole is aligned with the first positioning hole corresponding to the movement of the second rod relative to the first rod; and A positioning device is provided between the first rod and the second rod and includes a cutting control guide, a positioning piece, a fixing member and an elastic resistor. The cutting control guide can be relative to the first rod. The positioning member moves and is movably connected to the positioning member. The positioning member is movably inserted into the first positioning hole and is detachably engaged with the plurality of third rods as the cutting control guide moves relative to the first rod. Any second positioning hole among the two positioning holes, the fixing member has a second holding part that is sleeved on the first rod, and the first holding part and the second holding part are respectively held by both hands, The elastic contact member is pivotably connected to the first rod member and abuts against the positioning member. The telescopic tool according to claim 1, wherein the elastic contact member is bent from a metal sheet to form a fixed end connected to the first rod, a contact end abutting the top surface of the positioning member, and at least A turning portion is located between the fixed end and the abutting end. The abutting end pivots relative to the first rod as the positioning member moves relative to the first positioning hole. The telescopic tool according to claim 1 or 2, wherein the cutting control guide includes a guide portion, the guide portion is formed by bending a metal sheet to form a first connecting end and a third connecting end opposite to the first connecting end. Two connecting ends and a guide section located between the first connecting end and the second connecting end. The second connecting end is movably connected to the positioning member. The guide section is arc-shaped, and the guide section The horizontal height of the section is higher than the horizontal height of the second connecting end, so that there is a height difference between the guide section and the second connecting end. The positioning device includes an elastic member, and the opposite ends of the elastic member are respectively in contact with the The first rod and the first connecting end. The telescopic tool according to claim 3, wherein the positioning member has a neck portion, the guide portion has a guide groove, the guide groove extends from the second connecting end along the guide section and is movably engaged with the guide section. The neck portion causes the positioning member to be driven by the guide portion and detachably engage with any second positioning hole in the plurality of second positioning holes. The telescopic tool according to claim 3, wherein the fixing member has a fixing part connected to the second rod and a slide groove provided on the fixing part and the second holding part, and the cutting control guide The cutting control guide is movably installed in the chute in a direction parallel to the second rod. The cutting control guide includes a button and a slide block. The button is integrally connected to the slide block and exposed to the chute. , the bottom surface of the button is provided with a contact surface, the contact surface is arc-shaped and contacts the guide section, and the slider is fixedly connected to the first connecting end. The telescopic tool according to claim 5, wherein the top surface of the button is provided with a first part and a second part connected to the first part, and the height of the first part exposed to the chute is not more than 1 cm. , the horizontal height of the first part is lower than the horizontal height of the second part, so that there is a height difference of not less than 1 cm between the first part and the second part. The telescopic tool according to claim 5, wherein the button has two wings, the two wings are respectively provided on opposite sides of the button, and the fixing member has two limiting grooves, and the two limiting grooves are respectively provided on the On opposite sides of the chute, the two wings are movably connected to the two limiting grooves. The telescopic tool according to claim 1, wherein the fixing member is provided with a metal reinforcement member on the inner peripheral surface of the second holding portion. The telescopic tool according to claim 1, wherein the first rod has a first through hole connected to the through hole, and the outer peripheral surface of the second rod has a locking groove on a side opposite to the plurality of second positioning holes. , the second holding part has a second through hole aligned with the first through hole, the positioning device includes a limiting member, the limiting member is detachably provided through the second through hole and the first through hole to abut The slide groove and the limiting member selectively block an end of the slide groove corresponding to the movement of the second rod relative to the first rod. The telescopic tool according to claim 1, wherein a working part is provided at the end of the second rod, and the working part is one of a pry bar head, a connecting rod or a wrench.

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