TW202000400A - Telescopic rod - Google Patents

Abstract

The present invention provides a telescopic rod, which includes a first rod, a second rod, and a positioning device. The first rod has a penetrating hole and a first positioning hole communicated with the penetrating hole. 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 control member, a positioning member and an elastic member. The control member is movably mounted around the first rod. The positioning member is movably inserted through the first positioning hole and located between the second rod and the control member. The positioning member can be pressed by the control member to selectively engaged in one of the plurality of second positioning holes. The elastic member is connected to the positioning member and is elastically deformed as the positioning member is pressed by the control member. The positioning member is detached from one of the plurality of second positioning holes via the elastic restoring force of the elastic member to cause the second rod movable in relation to the first rod to adjust the length of the telescopic rod when the positioning member is not pressed by the control member. Thus, the second rod can be movable in relation to the first rod to adjust the length of the telescopic rod.

Description

Telescopic rod

The present invention relates to a telescopic rod, especially a telescopic rod that provides a stable locking effect.

Existing telescopic rods, such as Taiwan Patent Announcement No. 554799, include hand tool grips, sleeve rings and extension rods. The extension rod is hollow for the handle to extend, and one end of the sleeve ring is used for the extension rod to penetrate and fixed, and the other end of the sleeve ring is an eccentric inner wall. The eccentric inner wall is inserted into the ring sleeve and the position is not moved outward. The ring sleeve bulges the arc circle at a predetermined position on the outer periphery and pivotally engages the closing column. A sleeve ring and an extension rod are provided for the grip to extend, and the ring sleeve covers the handle, and the handle or the extension rod is relatively rotated, so that the ring sleeve can avoid deflection within the eccentricity of the sleeve ring. When the arc circle enters the narrow area avoiding the eccentricity, the ring sleeve is pressed to tighten the grip, and the steel urging column is pressed against the grip and the eccentric inner wall of the sleeve ring to fasten. However, during use of the above-mentioned telescopic rod, it is easy to cause the problem of loosening between the grip and the extension rod when turning. Therefore, how to overcome the various problems of the above-mentioned existing telescopic rods has become an urgent problem to be solved at present.

The invention provides a telescopic rod which can provide a stable locking effect by a positioning device provided between the first rod member and the second rod member.

The telescopic rod provided by the present invention includes a first rod member, a second rod member and a positioning device. The first rod has a through hole and a first positioning hole communicating with the through hole. The second rod is movably penetrated through the through hole and has a plurality of second positioning holes. A plurality of second positioning holes are provided on the outer peripheral surface of the second rod, and any second positioning holes correspond to the movement of the second rod relative to the first rod to align the first positioning holes. The positioning device includes a control member, a positioning member, and a first elastic member. The control member is movably sleeved on the first lever. The positioning member is movably penetrated through the first positioning hole and between the second rod member and the control member. The positioning member can be pressed against the control member to be detachably engaged with any second positioning hole. The first elastic element is connected to the positioning element and elastically deforms corresponding to the positioning element being pressed by the control element. When the positioning element is not pressed by the control element, it is separated from any second positioning hole by the elastic recovery of the first elastic element.

In an embodiment of the invention, the inner peripheral surface of the control member has a contact portion. The positioning member has an abutting end and a clamping end opposite to the abutting end. The abutment end is selectively pressed by the abutment portion. The clamping end is detachably clamped to any second positioning hole. The first elastic member has a first connecting end, a second connecting end opposite to the first connecting end, and a flexible portion disposed between the first connecting end and the second connecting end. The second connecting end is connected to the positioning member, the flexible portion is elastically deformed corresponding to the abutting end pressed by the abutting portion, and when the abutting end is not pressed by the abutting portion, the flexible portion elastically recovers and drives the positioning member relative to the first One positioning hole moves, causing the clamping end to detach from any second positioning hole.

In an embodiment of the present invention, the positioning member has a neck portion disposed between the abutting end and the snapping end. The first elastic member has a clamping slot provided at the second connecting end, and the clamping slot is fixed to the neck, so that the flexible portion can be driven by the positioning member to be elastically deformed.

In an embodiment of the invention, the first elastic member is formed by bending a metal sheet.

In an embodiment of the present invention, the flexible portion is arc-shaped when the positioning element is pressed by the control element, and flat when the positioning element is not pressed by the control element.

In an embodiment of the invention, the control element forms a first arc surface on the abutment portion. The positioning member forms a second arc surface selectively pressed against the first arc surface at the abutting end.

In an embodiment of the present invention, the positioning device includes a fixing member sleeved on the second lever member and a second elastic member disposed between the first lever member and the fixing member. The control member selectively contacts the fixing member. The first connecting end of the first elastic member is fixed to the inner end surface of the fixing member, and the second elastic member elastically abuts against the first connecting end of the first elastic member and the end surface of the first rod member.

In an embodiment of the invention, the second elastic member is a compression spring.

In an embodiment of the invention, the positioning device includes a gripping member sleeved on the first rod member. The control member is movably sleeved on the holding member. The holding member has a receiving groove and an embossing part. The accommodating groove is formed at one end of the holding member and accommodates the abutting end of the positioning member and the second connecting end of the first elastic member, and the embossed portion is formed on the outer peripheral surface of the holding member.

In an embodiment of the invention, the first rod has a first through hole communicating with the through hole. The outer peripheral surface of the second rod member is different from the plurality of second positioning holes, and has a sliding groove. The grip has a second through hole aligned with the first through hole. The positioning device includes a limiting member that penetrates through the second through hole and the first through hole to abut the sliding slot, and the limiting member selectively stops the sliding slot corresponding to the movement of the second rod relative to the first rod At the end.

Based on the above, the telescopic rod provided by the above embodiment of the present invention elastically deforms by the flexible portion corresponding to the positioning member pressed by the control member, and when the positioning member is not pressed by the control member, the flexible portion elastically recovers Drive the positioning member to move relative to the first positioning hole, causing the positioning member to disengage from any second positioning hole, so that the positioning device can be changed between the locked position and the released position, thereby ensuring the locking between the second lever and the first lever Effect to avoid unpredictable loosening.

In order to make the above-mentioned features and advantages of the present invention more obvious and understandable, the embodiments are specifically described below in conjunction with the accompanying drawings for detailed description as follows.

FIG. 1 is a schematic view of the appearance of the telescopic rod of the present invention. Fig. 2 is an exploded schematic view of the telescopic rod shown in Fig. 1. 3 to 8 are schematic cross-sectional views of the telescopic rod shown in FIG. 1 respectively. Please refer to FIG. 1 to FIG. 8, the telescopic rod of this embodiment includes a first rod 10, a second rod 20 and a positioning device 30.

The first rod 10 has a through hole 11, a first positioning hole 12 communicating with the through hole 11, and a first through hole 13 communicating with the through hole 11. The through hole 11 penetrates the opposite ends of the first rod 10 in the axial direction of the first rod 10. The first positioning hole 12 penetrates the circumferential surface of the first rod 10 in the radial direction of the first rod 10. The first perforation 13 penetrates the circumferential surface of the first rod 10 in the radial direction of the first rod 10 and is located on a side of the first rod 10 different from the first positioning hole 12.

The second rod 20 is movably penetrated through the through hole 11 of the first rod 10 and has a plurality of second positioning holes 21 and a sliding slot 22. The plurality of second positioning holes 21 are provided on the outer peripheral surface of the second rod 20. In this embodiment, the plurality of second positioning holes 21 can be formed and arranged equidistantly 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 10 of the second lever 20 relative to the first lever. The sliding groove 22 is disposed on the outer circumferential surface of the second rod 20 and extends along the axial direction of the second rod 20. The sliding groove 22 is located on a side of the second rod 20 different from the plurality of second positioning holes 21. In addition, the end of the second rod 20 can be set as a tool end, such as a conventional tool end such as a prying head with an adjustable angle.

The positioning device 30 is disposed between the first lever 10 and the second lever 20 and can be changed between the locked position and the released position. When the positioning device 30 is located in the locked position, the second lever 20 cannot face the first lever 10 When the positioning device 30 is in the release position, the second lever 20 can move relative to the first lever 10. The positioning device 30 includes a control member 31, a positioning member 32, a first elastic member 33, a fixing member 34, a second elastic member 35, a gripping member 36 and a limiting member 37.

The control member 31 is movably sleeved on the first lever member 10 so as to be able to move relative to the holding member 36 and selectively contact the fixing member 34. The control element 31 has a contact portion 311 and a first arc surface 312. The contact portion 311 is formed on the inner circumferential surface of the control member 31 and extends inward in the radial direction of the control member 31 to selectively press against the positioning member 32. The first arc surface 312 is formed on the side of the contact portion 311 facing the positioning member 32.

The positioning member 32 is movably penetrated through the first positioning hole 12 and between the second rod member 20 and the control member 31. The positioning member 32 can be pressed against the control member 31 to be detachably snapped to any second The positioning hole 21 is used to shift the positioning device 30 between the locked position and the released position. The positioning member 32 has an abutting end 321, a clamping end 322 opposite to the abutting end 321, a neck 323 disposed between the abutting end 321 and the clamping end 322, and a Second curved surface 324. The abutting end 321 is selectively pressed by the abutting portion 311, so that the positioning member 32 can move relative to the first positioning hole 12, so that the engaging end 322 can be detachably engaged with any second positioning hole 21. The neck 323 is retracted and formed between the abutting end 321 and the clamping end 322. The second arc surface 324 is formed on the abutment end 321 and is selectively pressed by the first arc surface 312. By the cooperation between the first arc surface 312 and the second arc surface 324, the abutment end 321 can be smoothly selected The sex is pressed by the contact portion 311.

The first elastic member 33 is connected to the positioning member 32 and elastically deforms corresponding to the positioning member 32 being pressed by the control member 31, so that when the positioning member 32 is not pressed by the control member 31, it is separated from any one by the elastic recovery of the first elastic member 33 Second positioning hole 21. The first elastic member 33 has a first connecting end 331, a second connecting end 332 opposite to the first connecting end 331, a flexible portion 333 disposed between the first connecting end 331 and the second connecting end 332, and A slot 334 provided in the second connecting end 332. The first connecting end 331 is connected to the fixing member 34. The second connecting end 332 is connected to the positioning member 32. In this embodiment, the clamping slot 334 is fixed to the neck 323, so that the positioning member 32 can drive the first elastic member 33 when moving relative to the first positioning hole 12. The flexible portion 333 elastically deforms when the abutting end 321 is pressed by the abutting portion 311, and when the abutting end 321 is not pressed by the abutting portion 311, the flexible portion 333 elastically recovers and drives the positioning member 32 relative to the first The positioning hole 12 moves, so that the clamping end 322 disengages from any second positioning hole 21. In this embodiment, the first elastic member 33 can be formed by bending a metal sheet, and the flexible portion 333 is arc-shaped when the positioning member 32 is pressed by the control member 31, and the positioning member 32 is not pressed by the control member 31 When it arrived, it was straight.

The fixing member 34 is movably sleeved on the second rod member 20, and the first connecting end 331 is fixed to the inner end surface of the fixing member 34. In this embodiment, the first connecting end 331 can be fixed to the inner end surface of the fixing member 34 via screws.

The second elastic member 35 is disposed between the first rod member 10 and the fixing member 34. The second elastic member 35 elastically abuts against the end surfaces of the first connecting end 331 and the first rod member 10, and is compressed corresponding to the movement of the fixing member 34 relative to the second rod member 20. In this embodiment, the second elastic member 35 can be a compression spring.

The holding member 36 is sleeved on the first lever 10, and the control member 31 is movably sleeved on the holding member 36. The holding member 36 has a receiving groove 361, an embossing portion 362 and a second through hole 363. The receiving groove 361 is formed at one end of the holding member 36 and receives the abutting end 321 and the second connecting end 332. The embossed portion 362 is formed on the outer peripheral surface of the grip 36. The second through-hole 363 is aligned with the first through-hole 13 so that the limiting member 37 penetrates the second through-hole 363 and the first through-hole 13 to abut the sliding slot 22, and the limiting member 37 corresponds to the second rod 20 relative to the first rod The member moves 10 and selectively stops at one end of the slide slot 22 to prevent the second lever 20 from disengaging from the first lever 10.

3 to 5, the positioning device 30 is in the locked position. The abutting end 321 of the positioning member 32 is pressed by the abutting portion 311 of the control member 31, and the engaging end 322 is engaged with one of the plurality of second positioning holes 21, so that the second lever 20 cannot be relative to the first lever Piece 10 moves. At this time, the control member 31 contacts the fixing member 34, and the flexible portion 333 of the first elastic member 33 is arc-shaped due to elastic deformation.

Referring to FIGS. 6 and 7, the user can apply force to the control member 31 to move the control member 31 relative to the first lever member 10 and the grip member 36 to disengage from the fixing member 34. Since the abutting end 321 of the positioning member 32 is not pressed by the abutting portion 311 of the control member 31, and the flexible portion 333 elastically recovers, the positioning member 32 is moved relative to the first positioning hole 12, so that the clamping end 322 disengages from the aforementioned card接的second positioning hole 21. At this time, the flexible portion 333 of the first elastic member 33 is flat due to the elastic recovery. At this point, the positioning device 30 is changed from the locked position to the released position, and the user can move the second lever 20 relative to the first lever 10 so that the other second positioning hole 21 is aligned with the first positioning hole 12.

Please refer to FIG. 8, when another second positioning hole 21 has been aligned with the first positioning hole 12, the user applies force to the control member 31 again, so that the abutting end 321 of the positioning member 32 is pressed by the abutting portion 311 of the control member 31 When the contact ends, the clamping end 322 is clamped to another second positioning hole 21. At this point, the length of the telescopic rod has been adjusted, and the positioning device 30 is changed from the released position to the locked position, the second rod 20 cannot move relative to the first rod 10, providing a stable locking effect.

In summary, the flexible rod 333 of this embodiment is elastically deformed by the flexible portion 333 corresponding to the positioning member 32 being pressed by the control member 31, and when the positioning member 32 is not pressed by the control member 31, the flexible portion 333 is elastic In response, the positioning member 32 is moved relative to the first positioning hole 12, causing the positioning member 32 to disengage from any second positioning hole 21, so that the positioning device 30 can be changed between the locked position and the released position, thereby ensuring the second lever 20 The locking effect with the first lever 10 prevents unpredictable loosening.

Although the present invention has been disclosed as above with examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be subject to the scope defined in the appended patent application.

10‧‧‧First rod 11‧‧‧Through hole 12‧‧‧First positioning hole 13‧‧‧First perforation 20‧‧‧Second rod 21‧‧‧Second positioning hole 22‧‧‧Sliding Slot 30‧‧‧Positioning device 31‧‧‧Control part 311‧‧‧Abutting part 312‧‧‧First arc surface 32‧‧‧Locating part 321‧‧‧Abutting end 322‧‧‧Clamping end 323‧ ‧‧Neck 324‧‧‧Second arc surface 33‧‧‧First elastic piece 331‧‧‧First connection end 332‧‧‧Second connection end 333‧‧‧Flex part 334‧‧‧Card slot 34 ‧‧‧Fixed piece 35‧‧‧Second elastic piece 36‧‧‧ Grip piece 361‧‧‧Retaining groove 362‧‧‧Embossing part 363‧‧‧Second perforation 37‧‧‧Limiting piece

FIG. 1 is a schematic view of the appearance of the telescopic rod of the present invention. Fig. 2 is an exploded schematic view of the telescopic rod shown in Fig. 1. Fig. 3 is a schematic partial cross-sectional view of the telescopic rod shown in Fig. 1. Fig. 4 is an enlarged schematic view of the selected place of the chain coil in Fig. 3. FIG. 5 is a schematic cross-sectional view taken along line 5-5 of FIG. 3. FIG. FIG. 6 is a continuation of FIG. 3, showing that the positioning member is separated from the second positioning hole. FIG. 7 is a continuation of FIG. 5 and shows that the positioning member is separated from the second positioning hole. FIG. 8 is a continuation of FIG. 6, showing that the positioning member is snapped into another second positioning hole.

10‧‧‧The first bar

11‧‧‧Through hole

12‧‧‧First positioning hole

20‧‧‧Second lever

21‧‧‧Second positioning hole

30‧‧‧Positioning device

31‧‧‧Control parts

32‧‧‧Locating parts

33‧‧‧The first elastic piece

34‧‧‧Fixed parts

35‧‧‧Second elastic piece

36‧‧‧ Grip

361‧‧‧slot

362‧‧‧embossing department

37‧‧‧Limiting parts

Claims (10)

A telescopic rod includes: a first rod member having a through hole and a first positioning hole communicating with the through hole; a second rod member movably passing through the through hole and having a plurality of second A positioning hole, the plurality of second positioning holes are provided on the outer peripheral surface of the second rod, and any second positioning hole of the plurality of second positioning holes corresponds to the movement of the second rod relative to the first rod and is aligned The first positioning hole; and a positioning device including a control member, a positioning member and a first elastic member, the control member is movably sleeved on the first rod member, the positioning member is movably penetrated The first positioning hole is disposed between the second rod and the control member, and the positioning member can be pressed against the control member and detachably snapped on any second positioning of the plurality of second positioning holes A hole, the first elastic member is connected to the positioning member and corresponds to the positioning member being elastically deformed by being pressed by the control member, when the positioning member is not pressed by the control member, it is disengaged by the elastic recovery of the first elastic member Any second positioning hole in the plurality of second positioning holes. The telescopic rod as described in item 1 of the patent application, wherein the inner peripheral mask of the control member has an abutting portion, and the positioning member has an abutting end and a snapping end opposite to the abutting end, the abutting The end is selectively pressed by the abutting portion, the clamping end is detachably snapped to any second positioning hole of the plurality of second positioning holes, the first elastic member has a first connecting end, an opposite A second connecting end at the first connecting end and a flexible portion disposed between the first connecting end and the second connecting end, the second connecting end is connected to the positioning member, the flexible portion corresponds to the resisting When the contact end is pressed by the contact portion and elastically deformed, and the contact end is not pressed by the contact portion, the flexible portion elastically recovers and drives the positioning member to move relative to the first positioning hole, causing the card The connection end is separated from any second positioning hole in the plurality of second positioning holes. The telescopic rod as described in item 2 of the patent application scope, wherein the positioning member has a neck disposed between the abutting end and the snapping end, and the first elastic member has a neck disposed on the second connecting end A clamping slot, the clamping slot is fixed to the neck, so that the flexible portion can be driven by the positioning member to be elastically deformed. The telescopic rod as described in item 2 of the patent application scope, wherein the first elastic member is formed by bending a metal sheet. The telescopic rod according to Item 2 of the patent application scope, wherein the flexible portion is arc-shaped when the positioning member is pressed by the control member, and straight when the positioning member is not pressed by the control member. The telescopic rod as described in item 2 of the patent application scope, wherein the control member forms a first arcuate surface at the abutment portion, and the positioning element forms a selective arc at the abutment end which is pressed against the first arcuate surface The second arc. The telescopic rod as described in item 2 of the patent application scope, wherein the positioning device includes a fixed member connected to the second rod member and a second elastic member disposed between the first rod member and the fixed member , The control member selectively contacts the fixing member, the first connecting end is fixed to the inner end surface of the fixing member, and the second elastic member elastically bears against the end surface of the first connecting end and the first rod member . The telescopic rod as described in item 7 of the patent application, wherein the second elastic member is a compression spring. The telescopic rod as described in item 2 of the patent application scope, wherein the positioning device includes a gripping member sleeved on the first rod member, the control member is movably sleeved on the gripping member, and the gripping member The utility model has an accommodating groove and an embossing part. The accommodating groove is formed at one end of the holding member and accommodates the abutting end and the second connecting end. The embossing part is formed on the outer peripheral surface of the holding member. The telescopic rod according to item 9 of the patent application scope, wherein the first rod member has a first perforation communicating with the through hole, and the outer peripheral surface of the second rod member is different from the side of the plurality of second positioning holes A sliding groove, the holding part has a second perforation aligned with the first perforation, the positioning device includes a limiting part, the limiting part penetrates the second perforation and the first perforation to abut the sliding In the slot, the limiting member selectively stops at an end of the sliding slot corresponding to the movement of the second lever member relative to the first lever member.

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