Telescopic rod

Abstract

The telescopic rod comprises an outer rod body and an inner rod body, the outer rod body is movably arranged outside the inner rod body in a sleeved mode, an adjusting mechanism is arranged between the inner wall of the outer rod body and the inner wall of the inner rod body and comprises a first fixing part and a second fixing part which are integrally connected, the first fixing part is fixedly connected to the inner wall of the outer rod body, and the second fixing part is fixedly connected to the inner wall of the inner rod body. The second fixing part is fixedly connected to the inner wall of the inner rod, the first fixing part is provided with an axial mounting cavity, the end, away from the second fixing part, of the mounting cavity is provided with an opening, the center of the other end of the mounting cavity is provided with an axial through hole communicated with the mounting cavity, and a movable seat capable of axially sliding in a reciprocating mode is arranged in the mounting cavity in a sleeved mode. The multiple movable bases are distributed in an annular array mode along the mounting cavity. Relative sliding of the outer rod and the inner rod is achieved, and the structure is simple and stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to telescopic rod technical field, especially a telescopic rod. BACKGROUND

[0002] The purpose of manual telescopic rod is very extensive, such as for curtain rod and door curtain rod etc., two rod-shaped pieces are mutually set and form relative sliding, locking mechanism is equipped between two rod-shaped pieces, when two rod-shaped pieces mutually telescopic or lengthen, locking mechanism is locked, so as to realize the telescopic function of telescopic rod, such as the locking structure of telescopic rod body disclosed in Chinese utility model patent (CN208951048U) sets up the connecting locking cover at the connecting place of outer tube and inner tube, and is locked through the installation bolt, the structure is relatively complex, and the external locking structure influences the integrity of telescopic rod. CONTENT

[0003] The utility model discloses a telescopic rod which solves the technical problems of the prior art.

[0004] The utility model discloses a telescopic rod, including outer pole and inner pole, the outer pole is set up in the activity in the inner pole, be equipped with adjusting mechanism between the outer pole inner wall and the inner pole inner wall, the adjusting mechanism includes the first fixed part and second fixed part of integral type connection, the first fixed part fixed connection in the outer pole inner wall, the second fixed part fixed connection in the inner pole inner wall, the first fixed part is set up with the installation cavity of axial, the installation cavity is set up with the axial through -hole of the communication installation cavity in the other end central, the installation cavity is set up with the movable seat of axial reciprocating sliding, a plurality of movable seats are along with the ring -shaped array distribution of installation cavity, the inner wall of a plurality of movable seats is surrounded and forms the axial limit chamber, the edge of movable seat towards installation cavity opening is equipped with the elastic prop -open department of outward turning -over or bending, the top of elastic prop -open department is equipped with the elastic sheet, the limit chamber is inserted and is equipped with the trigger rod of axial reciprocating sliding with respect to movable seat, the trigger rod is connected with the pull rope, the pull rope one end is fixed in the end of trigger rod, and the other end passes through axial through -hole and extends to the inner pole, the end of trigger rod towards axial through -hole and limit chamber bottom between is equipped with the first spring;

[0005] The outer wall of the trigger rod and the inner wall of the limit chamber form an axial distribution of concave-convex surface;

[0006] When the pull rope is in the relaxed state, the convex surface of the trigger rod is abutted with the convex surface of the limit chamber under the action of the first spring, the trigger rod extrudes the elastic prop -open department to make the elastic prop -open department deform outward, and then the top end of the elastic sheet is tightly abutted on the inner wall of the outer rod to form a lock between the movable seat and the outer rod, and then the outer rod and the inner rod are locked, and at this time, the outer rod and the inner rod will not be axially displaced relative to each other.

[0007] When the pull rope pulls the trigger rod, the trigger rod slides axially in a direction against the elastic force of the first spring, so that the concave surface of the trigger rod cooperates with the convex surface of the limiting cavity, the trigger rod releases the extrusion on the elastic support part to make the elastic support part recover the deformation inward, and then the top end of the elastic sheet is separated from the inner wall of the outer rod, so that the outer rod and the inner rod are unlocked, and at this time, the outer rod and the inner rod can be axially displaced relative to each other.

[0008] As preferred, a second spring is arranged between the outer peripheral wall of the movable seat and the first fixed part, and the second spring is arranged one-to-one with the movable seat.

[0009] As preferred, the first fixed part and the second fixed part are sleeve-shaped structures, the first fixed part and the second fixed part are axially integrally connected, the inner cavity of the first fixed part serves as a mounting cavity, the end of the first fixed part away from the second fixed part is provided with an opening, and the other end is provided with an axial through hole for the pull rope to pass through, and the inner cavity of the second fixed part is in communication with the inner cavity of the first fixed part through the axial through hole.

[0010] Further optimization, the second fixed part is fixedly connected with the inner rod through a fastener.

[0011] As preferred, the trigger rod is provided with a through hole extending through both ends in the center, one end of the pull rope is detachably connected to one end of the through hole through a fastener, and the other end of the pull rope extends to the inner cavity of the second fixed part through the through hole and the axial through hole to form a pulling end.

[0012] As preferred, the elastic support part is integrally arranged with the movable seat, and a plurality of elastic support parts are uniformly distributed along the opening edge of the movable seat, and the elastic sheet corresponds to the elastic support part one-to-one.

[0013] As preferred, the elastic sheet is a metal sheet with elastic deformation capability, and the bottom of the elastic sheet is fixedly connected with the elastic support part.

[0014] As preferred, the included angle between the two side faces of the concave surface of the concave-convex surface and the bottom face thereof is obtuse.

[0015] Further optimization, the outer peripheral wall of the end of the trigger rod facing the opening of the limiting cavity is provided with a protrusion, and the elastic support part is provided with a detent protrusion extending axially above the protrusion.

[0016] As preferred, the bottom of the limiting cavity is provided with a positioning seat for positioning the first spring.

[0017] The utility model discloses the technical effect for, inner rod and outer rod are mutually sleeved, and the adjusting mechanism is established between inner rod and outer rod, and the adjusting mechanism includes two fixed parts, and is fixedly connected on the inner wall of inner rod and outer rod respectively, and the movable seat is established on the fixed part, and the movable seat can slide along the axial direction of fixed part, and the end of movable seat is equipped with the elastic strutting part that bends or flange outward, and the top of elastic strutting part is equipped with the elastic sheet for abutting with the inner wall of outer rod, and the trigger rod of axially movable is inserted in the movable seat center, and the concave-convex surface cooperation is formed between the inner wall of trigger rod and movable seat, and the end of trigger rod is equipped with the pull rope, when the pull rope is in the relaxed state, the convex surface of trigger rod is abutted with the convex surface of limiting cavity under the action of first spring elasticity, and the extrusion of trigger rod is formed to elastic strutting part to make elastic strutting part deform outward, and then the top of elastic sheet is tightly abutted on the inner wall of outer rod to make the locking between movable seat and outer rod, and then make the locking between outer rod and inner rod, and at this time, the relative axial displacement does not occur between outer rod and inner rod.

[0018] When the pull rope pulls the trigger rod, the trigger rod slides axially to the direction of overcoming the first spring elasticity, to make the concave surface of trigger rod form the cooperation with the convex surface of limiting cavity, and the extrusion of trigger rod is released to elastic strutting part to make elastic strutting part recover deformation inward, and then the top of elastic sheet is separated from the inner wall of outer rod, and then make the locking between outer rod and inner rod, and at this time, the relative axial displacement can occur between outer rod and inner rod. Therefore, the locking can be carried out at any position after the contraction and elongation of inner rod and outer rod, which is not only simple in structure, and does not need to process the excessive rod, but also very stable in locking. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the overall structure diagram of the utility model;

[0020] Figure 2 It is the overall structure explosion diagram of the utility model;

[0021] Figure 3 It is the sectional view of the adjusting mechanism in the utility model when being in the locking state;

[0022] Figure 4 It is the sectional view of the adjusting mechanism in the utility model when being in the unlocking state.

[0023] In the drawing: 1, outer rod; 2, inner rod; 3, first fixed part; 4, second fixed part; 5, installation cavity; 6, axial through -hole; 7, movable seat; 8, limiting cavity; 9, elastic strutting part; 10, elastic sheet; 11, trigger rod; 12, pull rope; 13, first spring; 14, concave surface; 15, convex surface; 16, second spring; 17, lug; 18, stop position protrusion; 19, button; DETAILED DESCRIPTION

[0024] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0025] The utility model discloses an outer rod 1 and inner rod 2, the outer rod 1 is set up in the activity in the outer rod 2, make the outer rod 1 and inner rod 2 can be relative axial sliding, the inner wall of outer rod 1 and the inner wall between inner rod 2 are equipped with adjusting mechanism, and adjusting mechanism is used for locking and relieving the sliding between inner rod 2 and outer rod 1.

[0026] The adjusting mechanism comprises a first fixed part 3 and a second fixed part 4 which are integrally connected, the first fixed part 3 is fixedly connected to the inner wall of the outer rod 1, and the second fixed part 4 is fixedly connected to the inner wall of the inner rod 2; in this embodiment, the first fixed part 3 and the second fixed part 4 are both sleeve-shaped structures, the first fixed part 3 and the second fixed part 4 are integrally connected in the axial direction, the outer diameter of the first fixed part 3 is larger than the outer diameter of the second fixed part 4, the outer peripheral wall of the first fixed part 3 is tightly connected to the inner wall of the outer rod 1, and the second fixed part 4 is detachably connected and fixed to the inner rod 2 by means of fasteners such as screws or pins; the first fixed part 3 is provided with an inner cavity as a mounting cavity 5, one end of the second fixed part 4 is connected to the first fixed part 3, and the other end is provided with an opening; the end of the mounting cavity 5 away from the second fixed part 4 is provided with an opening, and an axial through hole 6 is formed in the center of the other end; the inner cavity of the second fixed part 4 is in communication with the inner cavity of the first fixed part 3 through the axial through hole 6; the mounting cavity 5 is sleeved with movable seats 7 which can axially reciprocate, a plurality of movable seats 7 are arranged in an annular array along the mounting cavity 5, and the inner walls of the plurality of movable seats 7 enclose a limiting cavity 8, that is, the movable seats 7 are provided with axial cavities in the centers as the limiting cavities 8; the limiting cavities 8 are provided with openings at both ends; the edges of the movable seats 7 towards the opening of the mounting cavity 5 are provided with outwardly turned or bent elastic supporting parts 9; the top of the elastic supporting part 9 is provided with an elastic sheet 10; the limiting cavity 8 is inserted with a trigger rod 11 which can axially reciprocate relative to the movable seat 7; the trigger rod 11 is connected with a pull rope 12, one end of the pull rope 12 is fixed to the end of the trigger rod 11, and the other end extends to the inner rod 2 through the axial through hole 6; a first spring 13 is arranged between the end of the trigger rod 11 towards the axial through hole 6 and the bottom of the limiting cavity 8, and the first spring 13 is also arranged in the axial direction; the outer wall of the trigger rod 11 and the inner wall of the limiting cavity 8 are both formed with axially distributed concave-convex surfaces 15; when the pull rope 12 is in a relaxed state, the convex surface 15 of the trigger rod 11 is in abutment with the convex surface 15 of the limiting cavity 8 under the action of the elasticity of the first spring 13, the trigger rod 11 extrudes the elastic supporting part 9 to make the elastic supporting part 9 deform outward, and then the top end of the elastic sheet 10 tightly abuts against the inner wall of the outer rod 1 to make the movable seat 7 and the outer rod 1 form a locking, and then the outer rod 1 and the inner rod 2 form a locking, and at this time, the outer rod 1 and the inner rod 2 cannot relatively axially displace;

[0027] When the pull rope 12 pulls the trigger rod 11, the trigger rod 11 axially slides towards the direction of overcoming the elasticity of the first spring 13, so that the concave surface 14 of the trigger rod 11 cooperates with the convex surface 15 of the limiting cavity 8, the trigger rod 11 releases the extrusion of the elastic supporting part 9 to make the elastic supporting part 9 restore the deformation inward, and then the top end of the elastic sheet 10 separates from the inner wall of the outer rod 1, and then the outer rod 1 and the inner rod 2 release the locking, and at this time, the outer rod 1 and the inner rod 2 can relatively axially displace.

[0028] Of course, the inner rod 2 can be provided with a button, and the pulling end of the pull rope 12 can extend to the outside of the inner rod 2 or extend to the inner rod 2 and form linkage with the button 19 on the inner rod 2, so as to realize the pulling and releasing of the pull rope 12 by pressing the button 19.

[0029] Further, the outer peripheral wall of the movable seat 7 and the first fixed part 3 are provided with a second spring 16, which is transversely arranged between the movable seat 7 and the first fixed part 3, so that the elastic force of the second spring 16 can always press the movable seat 7, so that the movable seat 7 and the first fixed part 3 form an elastic buffer, so as to pre-tighten the movable seat 7, avoid the gap between the first fixed part 3 and the movable seat 7 from becoming larger, prevent the movable seat 7 from deforming and loosening, so as to avoid the elastic sheet 10 from being too far away from the inner wall of the outer rod 1 and unable to abut against, the second spring 16 is arranged one by one with the movable seat 7, and the second spring 16 is arranged close to the opening of the mounting cavity 5.

[0030] Further, the trigger lever 11 is centrally axially provided with a through hole penetrating both ends, one end of the pull rope 12 is detachably connected to one end of the through hole by a fastener, and the other end of the pull rope 12 extends into the inner cavity of the second fixed part 4 after passing through the through hole and the axial through hole 6 to form a pulling end, that is, when the pull rope 12 pulls the trigger lever 11, the trigger lever 11 can stably slide, and it is more labor-saving.

[0031] Further, the elastic expansion part 9 is integrally arranged with the movable seat 7, and a plurality of elastic expansion parts 9 are evenly distributed along the opening edge of the movable seat 7, the elastic sheet 10 corresponds to the elastic expansion part 9 one by one, the elastic expansion part 9 and the movable seat 7 are usually plastic, and the elastic sheet 10 is a metal sheet with elastic deformation ability, and the bottom thereof is fixedly connected with the elastic expansion part 9.

[0032] Further, the concave-convex surface 15 in the limiting cavity 8 is arranged close to the elastic expansion part 9, so that the opening and closing of the elastic expansion part 9 is more sensitive.

[0033] Further, the included angle between the two side surfaces of the concave surface 14 of the concave-convex surface 15 and the bottom surface thereof is an obtuse angle, in the embodiment, the convex surface 15 is a ring-shaped protrusion, and the concave surface 14 is a ring-shaped groove, the two side surfaces of the ring-shaped protrusion are inwardly inclined, and the two side surfaces of the ring-shaped groove are outwardly inclined, that is, the concave surface 14 and the convex surface 15 are relatively staggered and cooperated to play a guiding role, and the sliding cooperation of the two is more smooth.

[0034] Further, the bottom of the limiting cavity 8 is provided with a positioning seat for positioning the first spring 13, so that the first spring 13 is more stable when compressed or stretched.

[0035] Further, the outer peripheral wall of the trigger lever 11 towards the opening of the limiting cavity 8 is provided with a protrusion 17, which is located axially above the elastic opening part 9, and the elastic opening part 9 is provided with a stop protrusion 18, the bottom of which is designed in one piece with the elastic opening part 9, and the top of the stop protrusion 18 extends axially above the protrusion 17, so that when the trigger lever 11 reciprocates axially, the stop protrusion 18 is always located axially above the protrusion 17, so as to prevent the trigger lever 11 and the movable seat 7 from being separated.

[0036] The utility model is not limited to the above best embodiment, and anyone can derive other various forms of products under the enlightenment of the utility model, but no matter any change in its shape or structure, any technical scheme with the same or similar to the present application falls within the protection scope of the utility model.

Claims

1. A telescopic pole, characterized in that, The device includes an outer rod (1) and an inner rod (2). The outer rod (1) is movably sleeved outside the inner rod (2). An adjustment mechanism is provided between the inner wall of the outer rod (1) and the inner wall of the inner rod (2). The adjustment mechanism includes a first fixing part (3) and a second fixing part (4) that are integrally connected. The first fixing part (3) is fixedly connected to the inner wall of the outer rod (1), and the second fixing part (4) is fixedly connected to the inner wall of the inner rod (2). The first fixing part (3) has an axial mounting cavity (5). The mounting cavity (5) is open at one end away from the second fixing part (4), and an axial through hole (6) communicating with the mounting cavity (5) is provided at the center of the other end. A movable seat (7) that can slide axially back and forth is sleeved inside the mounting cavity (5). Multiple movable seats (7) are arranged in a circumferential array along the mounting cavity (5). The inner walls of the multiple movable seats (7) enclose an axial limiting cavity (8). The edge of the movable seat (7) facing the opening of the mounting cavity (5) is provided with an outwardly turned or bent elastic support (9). The top of the elastic support (9) is provided with an elastic piece (10). A trigger rod (11) that can slide axially back and forth relative to the movable seat (7) is inserted into the limiting cavity (8). A pull rope (12) is connected to the trigger rod (11). One end of the pull rope (12) is fixed to the end of the trigger rod (11), and the other end extends through the axial through hole (6) to the inner rod (2). A first spring (13) is provided between the end of the trigger rod (11) facing the axial through hole (6) and the bottom of the limiting cavity (8). The outer wall of the trigger rod (11) and the inner wall of the limiting cavity (8) both form axially distributed concave and convex surfaces (15); When the pull rope (12) is in a relaxed state, the trigger rod (11) under the action of the elastic force of the first spring (13) causes its convex surface (15) to abut against the convex surface (15) of the limiting cavity (8). The trigger rod (11) compresses the elastic opening part (9) to make the elastic opening part (9) deform outward, and then the top of the elastic plate (10) presses against the inner wall of the outer rod (1) so that the movable seat (7) and the outer rod (1) are locked together, and then the outer rod (1) and the inner rod (2) are locked together. At this time, there will be no relative axial displacement between the outer rod (1) and the inner rod (2). When the pull rope (12) pulls the trigger rod (11), the trigger rod (11) slides axially in the direction of overcoming the elastic force of the first spring (13), so that the concave surface (14) of the trigger rod (11) and the convex surface (15) of the limiting cavity (8) form a fit. The trigger rod (11) releases the compression on the elastic opening part (9) so that the elastic opening part (9) returns to its deformation inward. Then the top of the elastic piece (10) separates from the inner wall of the outer rod (1), thereby releasing the lock between the outer rod (1) and the inner rod (2). At this time, the outer rod (1) and the inner rod (2) can be axially displaced relative to each other.

2. The telescopic rod according to claim 1, characterized in that, A second spring (16) is provided between the outer peripheral wall of the movable seat (7) and the first fixed part (3), and the second spring (16) is provided in a one-to-one correspondence with the movable seat (7).

3. The telescopic rod according to claim 1, characterized in that, Both the first fixing part (3) and the second fixing part (4) are sleeve-shaped structures. The first fixing part (3) and the second fixing part (4) are axially integrated. The inner cavity of the first fixing part (3) serves as the mounting cavity (5). The end of the first fixing part (3) away from the second fixing part (4) is open, and the other end is provided with an axial through hole (6) for the pull rope (12) to pass through. The inner cavity of the second fixing part (4) is connected to the inner cavity of the first fixing part (3) through the axial through hole (6).

4. The telescopic rod according to claim 3, characterized in that, The second fixing part (4) is fixedly connected to the inner rod (2) by fasteners.

5. The telescopic rod according to claim 1, characterized in that, The trigger rod (11) has a through hole in the center axially extending through both ends. One end of the pull rope (12) is detachably connected to one end of the through hole by a fastener. The other end of the pull rope (12) passes through the through hole and the axial through hole (6) in sequence and extends to the inner cavity of the second fixing part (4) to form a pulling end.

6. The telescopic rod according to claim 1, characterized in that, The elastic support (9) is integrally formed with the movable seat (7), and multiple elastic support (9) are evenly distributed circumferentially along the edge of the opening of the movable seat (7). The elastic sheet (10) corresponds one-to-one with the elastic support (9).

7. The telescopic rod according to claim 1, characterized in that, The elastic sheet (10) is a metal sheet with elastic deformation capability, and its bottom is fixedly connected to the elastic support part (9).

8. The telescopic rod according to claim 1, characterized in that, The angle between the two sides of the concave surface (14) and the bottom surface of the concave-convex surface (15) is an obtuse angle.

9. The telescopic rod according to claim 8, characterized in that, The outer peripheral wall of the trigger rod (11) facing the opening of the limiting cavity (8) is provided with a protrusion (17), and the elastic support part (9) is provided with a stop protrusion (18), which extends to the axial direction above the protrusion (17).

10. The telescopic rod according to claim 1, characterized in that, The bottom of the limiting cavity (8) is provided with a positioning seat for positioning the first spring (13).

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