Telescopic rod quick positioning device

Abstract

A telescopic rod fast positioning device includes an outer tube, an inner tube, a catch member and a catch unit. The outer tube includes a plurality of adjustment holes. The inner tube is movably installed inside the outer tube and includes a through hole. The catch member is movably installed inside the inner tube and has at least one catch portion. The catch unit is installed inside the inner tube and has a catch member, a spring and a locking pin. The catch member has at least one catch portion. One of the catch portion and the catch portion is a slope and the other is a guide post. When the catch member moves relative to the inner tube, the catch portion of the catch member catches the catch portion of the catch member, and the locking pin is switched between the embedded position and the disengaged position relative to the corresponding adjustment hole, so as to adjust the telescopic positioning purpose of the outer tube and the inner tube.

Description

Technical Field

[0001] This invention relates to a telescopic pole, and more particularly to a quick positioning device for a telescopic pole. Background Technology

[0002] A telescopic rod (disclosed in the specification of Taiwan Patent Certificate No. I709466) comprises a first rod, a second rod, 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 inserted through the through hole and has several second positioning holes. Any of the second positioning holes can be aligned with the first positioning hole. The positioning device includes a control member, a positioning member, and an elastic member. The control member is movably sleeved on 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 disengaged from the second positioning hole by pressure from the control member. The elastic member connects to the positioning member and elastically deforms in response to pressure from the control member. When not pressured by the control member, the positioning member disengages from the second positioning hole by the elastic recovery of the elastic member, allowing the second rod to move relative to the first rod.

[0003] When the user applies force to the control component, the positioning component is moved by the first elastic element and can move relative to the first positioning hole and the corresponding second positioning hole, so that the positioning device can change between the release position and the locking position, thereby achieving the purpose of adjusting the length of the telescopic rod.

[0004] However, because the control component of this telescopic rod is located outside the first member, it is prone to accidental activation, and the operator must apply considerable force to overcome the elastic force of the first member, making operation difficult. Furthermore, the overall structure is more complex, making manufacturing and assembly more troublesome. Summary of the Invention

[0005] The purpose of this invention is to provide a rapid positioning device for telescopic rods that can solve the technical problems of existing telescopic tubes.

[0006] The telescopic rod quick positioning device of the present invention comprises an outer tube, an inner tube, a braking element, and a braking unit. The outer tube extends along a first axial direction and is hollow, including a first tube wall defining a first inner hole and several adjustment holes that penetrate the first tube wall and are spaced apart along the first axial direction. The inner tube is movably installed inside the outer tube along the first axial direction. The inner tube extends along the first axial direction and is hollow, including a second tube wall defining a second inner hole and a through hole penetrating the second tube wall. The braking element is movably installed inside the inner tube and has at least one braking part. The braking unit is installed inside the inner tube and has a braking function. The actuating member actuates a controlled member, an elastic member is linked to the controlled member, and a locking pin is integrally connected to the elastic member. The controlled member has at least one controlled portion corresponding to the actuating member. The controlled member is actuated by the actuating member and can slide relative to the actuating member along a second axis perpendicular to the first axis. The elastic force of the elastic member provides the locking pin with a constant tendency to extend outward toward the through hole. The locking pin passes through the through hole. One of the actuating member and the controlled portion is an inclined surface, and the other is a guide post. When the actuating member moves relative to the inner tube, the actuating portion of the actuating member actuates the controlled portion of the controlled member, and causes the locking pin to switch between an engaged position and a disengaged position relative to the corresponding adjustment hole.

[0007] The telescopic rod quick positioning device of the present invention has a sloping part of the paving member, a guide post of the paving part, and an elastic member having a U-shaped return bend and two end portions connected to the return bend. The locking pin is fixed to one of the end portions, and the end portion springs against the paving member. The paving part of the paving member pulls the paving part of the paving member, which enables the paving member to drive the end portion of the elastic member and the locking pin, and causes the locking pin to switch between an engaged position and a disengaged position relative to the corresponding adjustment hole.

[0008] The telescopic rod quick positioning device of the present invention further includes a positioning seat fixed inside the inner tube, the positioning seat having a mounting groove for accommodating the elastic element, a sliding groove arranged along the second axial direction and communicating with the mounting groove, and a pair of guide grooves arranged at intervals along a third axial direction perpendicular to the first axial direction and the second axial direction and respectively arranged on both sides of the mounting groove. The braking element further includes a pair of side plates that can slide along the guide grooves, a pair of end plates that intersect and connect between the side plates, and a connecting rod connected to one of the end plates and extending to the outside of the inner tube. Each side plate has an inner surface and a groove recessed from the inner surface. There are two braking parts, which are respectively one of the groove walls constituting the groove. The braking element is slidably mounted in the sliding groove along the second axial direction.

[0009] The telescopic rod quick positioning device of the present invention includes a side plate of the braking member having a first end, a second end opposite to the first end along the first axis, a top surface extending from the first end to the second end, and a bottom surface opposite to the top surface. The inner side surfaces intersect and connect between the top surface and the bottom surface. The groove is trapezoidal. The braking part gradually deviates towards the second end as it extends from the top surface to the bottom surface. The linkage rod is adjacent to the first end of the side plate.

[0010] The telescopic rod quick positioning device of the present invention has a restraining unit with an inverted U-shaped cross frame, the cross frame having a crossbar and two side arms that intersect and connect to both ends of the crossbar, and the restraining part being connected to the side arms.

[0011] The advantages of this invention are: by utilizing the overall configuration, when adjusting the extension length of the inner tube relative to the outer tube, the user will not make mistakes, and the overall structure is relatively simple and easy to manufacture and assemble. Attached Figure Description

[0012] Figure 1 This is a three-dimensional combined appearance schematic diagram of an embodiment of the telescopic rod quick positioning device of the present invention;

[0013] Figure 2 This is an incomplete three-dimensional assembly diagram of the embodiment, illustrating a positioning seat, a braking element and a braking unit, and a locking pin passing through an adjustment hole and located in a locking position;

[0014] Figure 3 This is an exploded perspective view of this embodiment;

[0015] Figure 4 This is an incomplete exploded perspective view of this embodiment;

[0016] Figure 5 This is a cross-sectional view of this embodiment;

[0017] Figure 6 It is along Figure 5 The sectional view taken from line VI-VI in the diagram;

[0018] Figure 7 This is an operational diagram of this embodiment;

[0019] Figure 8 yes Figure 7 A schematic diagram of the linked operation;

[0020] Figure 9 yes Figure 8 The three-dimensional schematic diagram shows that the locking pin has completely retracted from the corresponding adjustment hole and is in a disengaged position. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] See Figures 1 to 3 An embodiment of the telescopic rod quick positioning device of the present invention includes an outer tube 10, an inner tube 20, a positioning seat 30, a braking element 40, a braking unit 50, and a handle 60.

[0023] The outer tube 10 extends along the first axial direction X and is hollow in shape, and includes a first tube wall 12 that defines a first inner hole 11, and a plurality of adjustment holes 13 that penetrate the first tube wall 12 and are spaced apart along the first axial direction X.

[0024] The inner tube 20 is movable along the first axial direction X and is installed inside the outer tube 10. The inner tube 20 extends along the first axial direction X and is hollow, including a second tube wall 22 that defines a second inner hole 21, and a through hole 23 that penetrates the second tube wall 22. The handle 60 is fixed to the top end of the inner tube 20.

[0025] Coordination Figure 4 The positioning seat 30 is fixed in the second inner hole 21 of the inner tube 20 and has a mounting groove 31, a sliding groove 32 arranged along a second axis Y perpendicular to the first axis X and connected to the mounting groove 31, and a pair of guide grooves 33 arranged at intervals along a third axis Z perpendicular to the first axis X and the second axis Y and respectively arranged on both sides of the mounting groove 31.

[0026] Coordination Figure 4The actuating member 40 is movable along the first axial direction X and is installed inside the inner tube 20. The actuating member 40 includes a pair of side plates 41 that can slide along the guide groove 33, a pair of end plates 42 that intersect and connect between the side plates 41, a connecting rod 43 that connects to one of the end plates 42 and extends to the outside of the inner tube 20, and a pair of actuating portions 44 disposed on the side plates 41. Each side plate 41 has a first end 411, a second end 412 that is opposite to the first end 411 along the first axial direction X, a top surface 413 that extends from the first end 411 to the second end 412, a bottom surface 414 that is opposite to the top surface 413, an inner surface 415 that intersects and connects between the top surface 413 and the bottom surface 414, and a trapezoidal groove 416 that is recessed from the inner surface 415. The linkage 43 is movable along the first axial direction X under force and has an operating plate 431 protruding from the handle 60. The actuating parts 44 are respectively one of the groove wall surfaces constituting the groove 416, and in this embodiment, the actuating parts 44 are inclined surfaces, gradually deflecting towards the second end 412 as they extend from the top surface 413 toward the bottom surface 414. The linkage 43 is adjacent to the first end 411 of the side plate 41.

[0027] Coordination Figure 4 The braking unit 50 is installed inside the inner tube 20 and has a braking member 51 that is braked by the braking member 40, an elastic member 52 that is linked to the braking member 51, and a locking pin 53 integrally connected to the elastic member 52.

[0028] The restrained member 51 is slidably mounted on the slide groove 32 along the second axis Y, and has an inverted U-shaped span 511 and two restrained parts 512 connected to the span 511 and respectively corresponding to the braking part 44. The span 511 has a crossbar 513 and two side arms 514 intersecting and connected to both ends of the crossbar 513. The restrained part 512 is in the shape of a guide post and is connected to the side arms 514.

[0029] The elastic member 52 has a U-shaped bend 521 and two end portions 522 and 523 connected to the bend 521, one of which, end portion 522, springs against the bottom of the crossbar 513 of the restrained member 51.

[0030] The locking pin 53 is integrally connected to one end portion 522 of the elastic member 52 (the end portion 522 of the bottom of the crossbar 513 of the restrained member 51), the locking pin 53 passes through the through hole 23, and the elastic force of the elastic member 52 provides the locking pin 53 to always maintain the tendency to extend outward from the through hole 23.

[0031] To further understand the effects of the combination of the components of this invention, the technical means employed, and the expected benefits, the following explanation will be provided, which will hopefully lead to a deeper and more specific understanding of this invention.

[0032] like Figure 1 , Figure 5 and Figure 6 As shown, when the entire assembly is complete, and the locking pin 53 passes through the through hole 23 and the adjustment hole 13 opposite to the through hole 23, and is in a locked position, the outer tube 10 and the inner tube 20 are in a positioned state. The restrained member 51 is subjected to the elastic force of the elastic member 52, so that the restrained part 512 is located at the top end of the restraining part 44 adjacent to the top surface 413.

[0033] like Figures 7 to 9 As shown, when the operator pulls the operating plate 431, and the side plate 41 moves along the first axis X toward the direction of the handle 60, the inclined surface of the braking part 44 moves simultaneously, and the braking member 51 slides relative to the positioning seat 30 along the second axis Y under the braking force of the braking member 40. The braking part 512 of the braking member 51 gradually moves toward the bottom end adjacent to the bottom surface 414, and the strut 511 drives one end 522 of the elastic member 52 toward the other end. When one end portion 523 approaches and the locking pin 53 is completely disengaged from the corresponding adjustment hole 13 and placed in a disengaged position, the outer tube 10 can be adjusted relative to the inner tube 20. When the desired length is reached, the operator releases the pulling force on the operating plate 431. Utilizing the elastic force of the elastic element 52 itself, one end portion 522 can be moved away from the other end portion 523, and the locking pin 53 can be re-engaged into the corresponding adjustment hole 13, thus completing the positioning purpose. In other embodiments, the actuating part is in the shape of a guide post, and the restrained part is in the shape of an inclined plane, which can also achieve the aforementioned functions and effects.

[0034] Therefore, the extension and retraction adjustment of the outer tube 10 and the inner tube 20 is quite easy in this invention, and there is no problem of pinching fingers during operation, making the operation relatively safe.

[0035] In addition to the above, the present invention also has the following advantages:

[0036] First, by pulling the control panel 431, the brake 40 can be made to brake the braked member 51, thus reducing the risk of accidental activation during downward operation and avoiding malfunction.

[0037] Second, the inclined plate-shaped braking part 44 has a long moving track, which can accurately measure the displacement of the locking pin 53, making it safer to use.

[0038] Third, since the strut 511 of the restrained member 51 is inverted U-shaped, and the restrained part 512 is connected to the strut 511 and corresponds to the braking part 44 respectively, the strut 511 can slide smoothly along the second axis Y, and drive the locking pin 53 to move smoothly, making the operation smoother.

[0039] In summary, the telescopic rod quick positioning device of the present invention has a simple overall structure, is easy to manufacture and assemble, and can solve the problems of pipe extension and contraction and hand clamping, thus achieving the purpose of the present invention.

Claims

1. A telescopic pole quick positioning device, comprising an outer tube, an inner tube, a braking component, and a braking unit, characterized in that: The outer tube extends along the first axis and is hollow, and includes a first tube wall that defines the first inner hole, and a plurality of adjustment holes that penetrate the first tube wall and are spaced apart along the first axis. The inner tube is movable along the first axis and installed inside the outer tube. The inner tube extends along the first axis and is hollow, and includes a second tube wall that defines a second inner hole, and a perforation that penetrates the second tube wall. The braking element is movable along the first axial direction and is installed inside the inner tube. The braking element has at least one braking part, and the braking part of the braking element is an inclined surface. The braking unit is installed inside the inner tube and has a braking member that is braked by the braking member, an elastic member that is linked to the braking member, and a locking pin integrally connected to the elastic member. The braking member has at least one braking portion corresponding to the braking portion, and the braking portion is a guide post. The braking member can slide relative to the braking member along a second axis perpendicular to the first axis when braked by the braking member. The elastic force of the elastic member provides the locking pin with a tendency to always extend outward toward the through hole. The elastic member has a U-shaped bend and two end portions connected to the bend. The locking pin is fixed to one of the end portions, and the end portion springs against the braking member. The locking pin passes through the through hole. When the braking member moves relative to the inner tube, the braking portion of the braking member brakes the braking portion of the braking member, which can cause the braking member to drive the end portion of the elastic member and the locking pin, and cause the locking pin to switch between an engaged position and a disengaged position relative to the corresponding adjustment hole.

2. The telescopic pole quick positioning device according to claim 1, characterized in that: The telescopic rod quick positioning device further includes a positioning seat fixed inside the inner tube. The positioning seat has a mounting groove for accommodating the elastic element, a sliding groove arranged along the second axial direction and communicating with the mounting groove, and a pair of guide grooves spaced apart along a third axial direction perpendicular to the first axial direction and the second axial direction and respectively arranged on both sides of the mounting groove. The braking element further includes a pair of side plates that can slide along the guide grooves, a pair of end plates that intersect and connect between the side plates, and a connecting rod connected to one of the end plates and extending to the outside of the inner tube. Each side plate has an inner surface and a groove recessed from the inner surface. There are two braking parts, which are respectively one of the groove walls constituting the groove. The braking element is slidably mounted in the sliding groove along the second axial direction.

3. The telescopic rod quick positioning device according to claim 2, characterized in that: The side plates of the brake member also each have a first end, a second end opposite to the first end along the first axis, a top surface extending from the first end to the second end, and a bottom surface opposite to the top surface. The inner surfaces intersect and connect between the top surface and the bottom surface. The groove is trapezoidal. The brake part gradually deviates towards the second end as it extends from the top surface to the bottom surface. The linkage rod is adjacent to the first end of the side plate.

4. The telescopic rod quick positioning device according to claim 2, characterized in that: The braking unit has a U-shaped crossbar, which has a crossbar and two side arms that intersect and connect to the two ends of the crossbar. The braking part is connected to the side arms.

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