CN218624931U

CN218624931U - Gapless quick adjustment telescopic link

Info

Publication number: CN218624931U
Application number: CN202221672972.1U
Authority: CN
Inventors: 廖易仑; 唐昌辉; 苏晓
Original assignee: Guilin Zhishen Information Technology Co Ltd
Current assignee: Guilin Zhishen Information Technology Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2023-03-14
Anticipated expiration: 2032-06-30

Abstract

The utility model relates to the technical field of telescoping devices, in particular to a gapless quick adjustment telescopic rod, which comprises a first telescopic rod, a second telescopic rod and a sliding block which can slide in the second telescopic rod, wherein the side wall of the second telescopic rod is provided with a mounting groove, a locking block is arranged in the mounting groove, and two side surfaces of the locking block are respectively contacted with the inner wall surface of the first telescopic rod and the outer peripheral surface of the sliding block; the both ends of sliding block are connected with the button pole respectively and are in the elastic component of compression state, and the elastic component is connected between second telescopic link inner wall and sliding block diapire, and the face that the sliding block and locking piece contacted is first inclined plane. The utility model can quickly adjust the relative length of the first telescopic rod and the second telescopic rod, and can quickly and stably extend and lock the first telescopic rod and the second telescopic rod in any length in the extension stroke; and because the first telescopic link and the second telescopic link are in gapless fit, the relative shaking between the first telescopic link and the second telescopic link can be effectively avoided.

Description

Gapless quick adjustment telescopic link

Technical Field

The utility model relates to a telescoping device's technical field, more specifically relates to a zero clearance quick adjustment telescopic link.

Background

The existing telescopic rod connecting structure is mainly telescopic by adopting a multi-rod sleeving mode. The device can realize the gapless effect only by locking through a threaded knob or a pull buckle, and has slower adjusting speed; and if from flexible connection structure such as rapping bar, stabilizer, lock with the plastic piece, this kind of flexible connection structure can lead to rocking because of the deformation of plastic piece. That is, the existing telescopic rod connecting structure can be locked, but the adjusting speed is slow, the adjusting speed is fast, and then the locking function and the adjusting speed are difficult to be considered.

Chinese patent CN205918722U discloses a telescopic link connection structure and self-timer rod, the telescopic link connection structure includes a first telescopic tube and a second telescopic tube partially accommodated in the first telescopic tube, a limiting member is formed on the outer wall of the second telescopic tube, the first telescopic tube includes a first tube and a first connecting member disposed on the inner wall of the first tube, the first connecting member is located at the opening end of the first tube, the distance between the inner wall of the first connecting member and the axis of the first connecting member is smaller than the distance between the inner wall of the first tube and the axis of the first tube, a gap is formed between the inner wall of the first connecting member and the outer wall of the second telescopic tube, the second telescopic tube is pulled to drive the limiting member to move in the direction close to the first connecting member until the limiting member is accommodated in the gap, and the second telescopic tube is clamped in the first telescopic tube. Although the above-mentioned scheme has solved the problem that flexible pipe whole rocked after the extension, in the above-mentioned scheme: the second telescopic pipe is pulled to drive the limiting part to be accommodated in the gap to realize locking, and the extensible stroke of the first telescopic pipe and the extensible stroke of the second telescopic pipe are unique and fixed, so that the first telescopic pipe and the second telescopic pipe cannot be adjusted randomly.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome not enough among the prior art, provide a zero clearance quick adjustment telescopic link, can stretch and lock first telescopic link and second telescopic link arbitrary length in flexible stroke fast.

In order to solve the technical problem, the utility model discloses a technical scheme is:

the provided gapless quick adjusting telescopic rod comprises a first telescopic rod and a second telescopic rod, wherein the first telescopic rod is sleeved outside the second telescopic rod; the sliding block can slide in the second telescopic rod, an installation groove is formed in the side wall of the second telescopic rod, a locking block is placed in the installation groove, and two side faces of the locking block are respectively in contact with the inner wall face of the first telescopic rod and the outer peripheral face of the sliding block; two ends of the sliding block are respectively connected with a button rod and an elastic piece in a compressed state, and the elastic piece is connected between the inner wall of the second telescopic rod and the bottom wall of the sliding block; the face that the sliding block and locking piece contacted is first inclined plane, and when the elastic component extended, the sliding block extruded the locking piece and produced outside thrust, and when the button lever pressed and made the elastic component shrink, the sliding block did not produce thrust to the locking piece.

The utility model discloses a zero clearance quick adjustment telescopic link, first telescopic link cup joint with the second telescopic link and form the telescopic link, and the locking piece passes the second telescopic link and acts on the inner wall of first telescopic link, can realize the zero clearance effect between first telescopic link and the second telescopic link. When no acting force acts on the button rod, the sliding block slides along the axis of the second telescopic rod under the action of the elastic piece, and because the surface of the sliding block, which is in contact with the locking block, is a first inclined surface, the sliding block generates outward thrust on the locking block under the acting force of the first inclined surface, and the locking block passes through the mounting groove of the second telescopic rod and is extruded between the sliding block and the inner wall of the first telescopic rod, so that the relative position of the first telescopic rod and the second telescopic rod is locked; because the locking between the first telescopic rod and the second telescopic rod is mainly realized by the friction force between the locking block and the sliding block as well as between the first telescopic rod and the inner wall of the second telescopic rod, the first telescopic rod and the second telescopic rod of the utility model can stay and be locked at any relative positions; when external force acts on the button rod, under the effect of button rod, the elastic component contracts, and first inclined plane does not have the motive force to the locking piece, does not have the squeezing action between locking piece and first telescopic link inner wall and the sliding block, but first telescopic link and second telescopic link relative slip. The utility model discloses but the relative length of the first telescopic link of quick adjustment and second telescopic link, and can stretch and lock first telescopic link and second telescopic link arbitrary length in flexible stroke fast and stably.

Further, the sliding block is the toper, the effort that the sliding block was applied to the locking piece is greater than the effort that the elastic component was applied to the sliding block. The sliding block cooperates with first inclined plane with the locking piece, and first inclined plane has the reinforcement effect, helps obtaining stable locking state, and the setting of toper sliding block does not regard as the utility model discloses a restrictive regulation.

Furthermore, a plurality of convex edges which protrude out of the inner wall of the first telescopic rod and are uniformly distributed are arranged in the first telescopic rod, the inner wall surface of each convex edge is attached to the outer peripheral surface of the second telescopic rod, and one side surface of the locking block abuts against the inner wall surface of the first telescopic rod or the side wall surface of each convex edge. The inner wall surface of the convex edge is attached to the outer peripheral surface of the second telescopic rod, so that the first telescopic rod and the second telescopic rod can be matched without a gap, and the first telescopic rod and the second telescopic rod are prevented from shaking.

Furthermore, one side face of the locking block abuts against the side wall face of the convex edge, and the face, abutting against the convex edge, of the locking block is a second inclined face capable of generating thrust on the locking block.

Further, the acting force that the bead was applyed the locking piece is greater than the sliding block is applyed the acting force of locking piece. The contact surface of the locking block and the inner wall of the first telescopic rod is a second inclined surface, and like the first inclined surface, the second inclined surface also plays a reinforcement role and is beneficial to obtaining a stable locking state.

Further, the horizontal component of the acting force of the first inclined surface to the locking block is in the same direction as the horizontal component of the acting force of the second inclined surface to the locking block. Under the effort on first inclined plane and second inclined plane, promote the locking piece and move to the groove face looks butt with the mounting groove, increase the frictional force between locking piece and the second telescopic link to help obtaining more stable locking state.

Furthermore, the number of the mounting grooves and the number of the locking blocks are twice the number of the convex ribs, and the locking blocks are in a group which is in mirror symmetry with respect to the central plane of the first telescopic rod or the second telescopic rod.

Furthermore, the second inclined surfaces of each rib are two mirror images, and the horizontal component directions of the acting force of the two second inclined surfaces on the locking block are opposite. The one end contact of locking piece contacts in the outer wall of sliding block, the other end contact of locking piece in the lateral wall of bead, two liang of mirror symmetry of locking piece, and the motion trend of the locking piece of two mirror symmetry is opposite, forms the auto-lock.

Further, the one end of second telescopic link can be dismantled and be connected with the tail ring, the tail ring is equipped with the first holding chamber that can hold partial elastic component at least, the second holding chamber that can hold partial elastic component at least is seted up to the tip of sliding block, first holding chamber and second holding intracavity are arranged respectively in the both ends of elastic component, and the elastic component of being convenient for is linear concertina movement.

Furthermore, a button is connected to the end of the button rod, the outer peripheral surface of the button is in contact with the inner wall surface of the second telescopic rod, and at least part of the button protrudes out of the end surface of the second telescopic rod. The button rod is driven to move by pressing the button, the appearance is attractive, and the operation is simple and convenient.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model can rapidly adjust the relative length of the first telescopic rod and the second telescopic rod without clearance, and can rapidly and stably extend and lock the first telescopic rod and the second telescopic rod in any length in the extension stroke; and because the first telescopic link and the second telescopic link are in gapless fit, the relative shaking between the first telescopic link and the second telescopic link can be effectively avoided.

Drawings

FIG. 1 is a schematic structural view of a quick adjustment telescopic rod without clearance;

FIG. 2 is a schematic view of the structure of the portion A in FIG. 1;

FIG. 3 is a schematic view of a second telescoping pole and locking block;

FIG. 4 is a perspective view of the quick adjustment telescoping rod without gaps;

FIG. 5 is a schematic view of the locking block engaged with the first and second extendable rods;

in the drawings: 1. a first telescopic rod; 11. a rib; 12. a limiting ring; 2. a second telescopic rod; 21. mounting grooves; 22. a tail ring; 23. a first accommodating cavity; 3. a slider; 31. a second accommodating cavity; 4. a locking block; 41. a first locking block; 42. a second lock block; 43. a third lock block; 44. a fourth lock block; 45. a fifth lock block; 46. a sixth lock block; 5. a button lever; 6. an elastic member; 7. a first inclined plane; 8. a button; 9. a second inclined plane.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Example one

As shown in fig. 1 to 4, a first embodiment of the gapless quick adjustment telescopic rod of the present invention includes a first telescopic rod 1 and a second telescopic rod 2, wherein the first telescopic rod 1 is sleeved outside the second telescopic rod 2; the sliding rod type telescopic rod is characterized by further comprising a sliding block 3 capable of sliding in the second telescopic rod 2, a mounting groove 21 is formed in the side wall of the second telescopic rod 2, a locking block 4 is placed in the mounting groove 21, and two side faces of the locking block 4 are respectively in contact with the inner wall face of the first telescopic rod 1 and the outer peripheral face of the sliding block 3; two ends of the sliding block 3 are respectively connected with a button rod 5 and an elastic piece 6 in a compressed state, and the elastic piece 6 is connected between the inner wall of the second telescopic rod 2 and the bottom wall of the sliding block 3; the surface that sliding block 3 and locking piece 4 contacted is first inclined plane 7, and when the elastic component extended, sliding block 3 extrusion locking piece 4 produced outside thrust, and when button pole 5 pressed and made the elastic component shrink, sliding block 3 did not produce thrust to locking piece 4. In order to realize the function of the first inclined surface 7, the first inclined surface 7 in this embodiment is inclined toward the inside of the first telescopic rod 1 and the second telescopic rod 2 with respect to the extending and retracting direction of the elastic member 6, and the first inclined surface 7 is inclined toward the outside of the first telescopic rod 1 and the second telescopic rod 2 with respect to the pressing direction of the button rod 5. In addition, the elastic member 6 in this embodiment may be configured as a spring, two free ends of the spring are respectively connected between the bottom wall inside the second telescopic rod 2 and the bottom wall of the sliding block 3, and the extending and retracting direction of the elastic member 6 and the pressing direction of the button rod 5 are both the axial direction of the first telescopic rod 1 and the second telescopic rod 2. In this embodiment, both ends of the first telescopic rod 1 are provided with the limiting rings 12 to control the telescopic strokes of the first telescopic rod 1 and the second telescopic rod 2.

When this embodiment is implemented, first telescopic link 1 cup joints with second telescopic link 2 and forms the telescopic link, because locking piece 4 passes second telescopic link 2 and acts on the inner wall of first telescopic link 1, need not additionally during the design of this embodiment for locking piece 4 headspace, but the inner wall of first telescopic link 1 and the outer wall of second telescopic link 2 at the axial at least part in close contact with to alright realize the zero clearance effect between first telescopic link 1 and the second telescopic link 2.

When no acting force acts on the button rod 5, under the action of the elastic piece 6, the sliding block 3 slides along the axis of the second telescopic rod 2, because the contact surface of the sliding block 3 and the locking block 4 is the first inclined surface 7, under the acting force of the first inclined surface 7, the sliding block 3 generates pushing force outwards from the telescopic rod to the locking block 4, and the locking block 4 passes through the mounting groove 21 of the second telescopic rod 2 and is extruded between the sliding block 3 and the inner wall of the first telescopic rod 1, so that the relative positions of the first telescopic rod 1 and the second telescopic rod 2 are locked; because the locking between the first telescopic rod 1 and the second telescopic rod 2 is mainly realized by the friction force between the locking block 4 and the sliding block 3 as well as between the inner wall of the first telescopic rod 1, the first telescopic rod 1 and the second telescopic rod 2 of the utility model can stay and be locked at any relative position; when external force acts on button bar 5, under button bar 5's effect, elastic component 6 shrink, and first inclined plane 7 does not have the motive force to locking piece 4, does not have the squeezing action between locking piece 4 and 1 inner wall of first telescopic link and the sliding block 3, but first telescopic link 1 and 2 relative sliding of second telescopic link. But this embodiment relative length of first telescopic link 1 of quick adjustment and second telescopic link 2, and can be fast and stably with first telescopic link 1 and the flexible and locking of second telescopic link 2 arbitrary length in flexible stroke.

Wherein, first inclined plane 7 is formed at between sliding block 3 and locking piece 4, for realizing better locking effect, often need to set up multiunit locking piece 4, but this embodiment sets up sliding block 3 into the toper, but the contact of a set of sliding block 3 periphery inclined plane sets up a set of or multiunit locking piece 4. In this embodiment, the acting force applied to the sliding block 4 by the sliding block 3 is greater than the acting force applied to the sliding block 3 by the elastic member 6, the sliding block 3 and the locking block 4 are matched by the first inclined surface 7, and the first inclined surface 7 has a boosting effect, so as to help to form self-locking and obtain a stable locking state. However, the tapered sliding block is preferably provided only for simplifying the processing of the sliding block 3, and the present invention is not limited to this, and the sliding block 3 provided with a plurality of inclined plane body structures may be applied to the present invention.

Be equipped with a plurality of salient in 1 inner wall of first telescopic link and evenly distributed's bead 11 in the first telescopic link, the internal face of bead 11 is laminated mutually with the outer peripheral face of second telescopic link 2, realizes gapless cooperation between first telescopic link 1 and the second telescopic link 2, avoids taking place between first telescopic link 1 and the second telescopic link 2 and rocks relatively. An arc-shaped cavity is formed between the adjacent convex ribs 11 and the outer wall of the second telescopic rod 2, and the locking block 4 which penetrates through the side wall of the second telescopic rod 2 is arranged to extend out of the mounting groove 21 to be in contact with the inner wall surface of the first telescopic rod 1. In this embodiment, one side surface of the lock block 4 abuts against the inner wall surface (the inner wall surface or the side surface of the non-rib 11) of the first telescopic link 1.

One end of the second telescopic rod 2 is detachably connected with a tail ring 22, the tail ring 22 is provided with a first accommodating cavity 23 capable of accommodating at least part of the elastic part 6, the end part of the sliding block 3 is provided with a second accommodating cavity 31 capable of accommodating at least part of the elastic part 6, two free end ends of the elastic part 6 are respectively arranged in the first accommodating cavity 23 and the second accommodating cavity 31, and linear telescopic motion of the elastic part 6 can be realized. The other end of the second telescopic rod 2 is connected with a button 8 in a sliding mode, the outer peripheral surface of the button 8 is in contact with the inner wall surface of the second telescopic rod 2, and at least part of the button 8 protrudes out of the end face of the second telescopic rod 2. Only need the endwise slip during the operation of button 8 and need not to rotate, for the rotation of restriction button 8, this embodiment can set up the sand grip at button 8's outer wall, set up the recess at second telescopic link 2's inner wall, realizes the linear slip of button 8 and second telescopic link 2 by the mutually supporting between sand grip and the recess. In addition, in order to prevent the elastic member 6 from being damaged by excessive pressing, assuming that the distance between the end of the sliding block 3 and the end of the tail ring 22 is a, the size of the push button 8 is designed so that the push button 8 protrudes beyond the end of the second telescopic rod 2 by a distance a.

In addition, in order to further avoid the shaking between the first telescopic rod 1 and the second telescopic rod 2, the mounting groove 21 of the embodiment is arranged at one end of the second telescopic rod 2 close to the first telescopic rod 1; first telescopic link 1 and second telescopic link 2 are flexible when extremely the longest stroke, the portion of cup jointing that cup joints each other still leaves between first telescopic link 1 and the second telescopic link 2, the portion of cup jointing of second telescopic link 2 is seted up to the mounting groove 21 of this embodiment, and the axial length of mounting groove 21 is close to the axial length who cup joints the portion as far as possible, the axial length of locking piece 4 slightly is less than the axial length of mounting groove 21, so, locking piece 4 and sliding block 3 can increase as far as possible, frictional force between 1 inner wall of first telescopic link, thereby strengthen the locking effect of locking piece 4. In order to facilitate taking and placing of the locking block 4, the mounting groove 21 of the embodiment is configured to be a bone-shaped groove, so as to facilitate taking and placing of the locking block 4 in the length direction or the width direction of the locking block 4, as shown in fig. 3.

The embodiment is carried out according to the following working principle:

when the button 8 is pressed, under the action of the button rod 5, the elastic piece 6 contracts, the first inclined surface 7 has no driving force on the locking block 4, no extrusion action exists between the locking block 4 and the inner wall of the first telescopic rod 1 and between the locking block 4 and the sliding block 3, the locking action of the locking block 4 is released, and the first telescopic rod 1 and the second telescopic rod 2 can slide relatively; when the first telescopic rod 1 and the second telescopic rod 2 are stretched to a desired length, the button 8 is released, the sliding block 3 slides along the axis of the second telescopic rod 2 under the action of the elastic piece 6, the sliding block 3 generates pushing force outwards from the telescopic rod to the locking block 4 under the action of the first inclined surface 7 because the contact surface of the sliding block 3 and the locking block 4 is the first inclined surface 7, and the locking block 4 passes through the mounting groove 21 of the second telescopic rod 2 and is extruded between the sliding block 3 and the inner wall of the first telescopic rod 1, so that the relative position of the first telescopic rod 1 and the second telescopic rod 2 is locked at a required position; after the use is finished, when the button 8 is pressed, under the action of the button rod 5, the elastic piece 6 contracts, the locking action of the locking block 4 is released, and the first telescopic rod 1 and the second telescopic rod 2 can relatively slide and contract; when first telescopic link 1 and second telescopic link 2 shrink to accomodating length, then loosen button 8, under the effect of elastic component 6, sliding block 3 acts on locking piece 4 and promotes locking piece 4 realization locking to the outside to keep stable state of accomodating. The first telescopic link 1 and the second telescopic link 2 of the embodiment are in gapless fit, can avoid shaking, and can be contracted and locked at any required use position or storage position.

Example two

This embodiment is the utility model discloses a second embodiment of zero clearance quick adjustment telescopic link, this embodiment is similar with the embodiment, and the difference lies in that, a side butt of locking piece 4 in the lateral wall face of bead 11, under the effect of elastic component 6, locking piece 4 extrudees between sliding block 3 and the 11 lateral wall faces of bead to form the locking, as shown in fig. 5.

The surface of the locking block 4 abutted against the convex rib 11 is a second inclined surface 9 capable of generating thrust on the locking block 4, and the acting force applied to the locking block 4 by the convex rib 11 is greater than the acting force applied to the locking block 4 by the sliding block 3. The contact surface of the locking block 4 and the inner wall of the first telescopic rod 1 is a second inclined surface 9, like the first inclined surface 7, the second inclined surface 9 also has a force increasing effect, and the stable locking state is favorably obtained.

The horizontal component of the urging force of the first inclined surface 7 against the lock block 4 is in the same direction as the horizontal component of the urging force of the second inclined surface 9 against the lock block 4. Under the acting force of the first inclined plane 7 and the second inclined plane 9, the locking block 4 is pushed to move to abut against the groove surface of the mounting groove 21, and the friction force between the locking block 4 and the second telescopic rod 2 is increased, so that a more stable locking state is obtained.

The embodiment is carried out according to the following working principle:

when the button 8 is pressed, under the action of the button rod 5, the elastic piece 6 contracts, the first inclined surface 7 and the second inclined surface 9 have no driving force on the locking block 4, no squeezing action exists between the locking block 4 and the inner wall of the first telescopic rod 1 and between the locking block 4 and the sliding block 3, the locking action of the locking block 4 is released, and the first telescopic rod 1 and the second telescopic rod 2 can slide relatively; when the first telescopic rod 1 and the second telescopic rod 2 are stretched to a desired length, the button 8 is released, the sliding block 3 slides along the axis of the second telescopic rod 2 under the action of the elastic piece 6, the sliding block 3 generates thrust force outwards from the telescopic rod to the locking block 4 under the action of the first inclined surface 7 and the second inclined surface 9, the locking block 4 passes through the mounting groove 21 of the second telescopic rod 2 and is extruded between the sliding block 3 and the side wall of the convex rib 11 of the first telescopic rod 1, and the locking block 4 is extruded by the first inclined surface 7 and the second inclined surface 9 to be abutted against the groove surface of the mounting groove 21, so that the relative position of the first telescopic rod 1 and the second telescopic rod 2 is locked at a required position; after the use is finished, when the button 8 is pressed, under the action of the button rod 5, the elastic piece 6 contracts, the locking action of the locking block 4 is released, and the first telescopic rod 1 and the second telescopic rod 2 can relatively slide and contract; when first telescopic link 1 and second telescopic link 2 shrink to accomodating length, then loosen button 8, under the effect of elastic component 6, sliding block 3 acts on locking piece 4 and promotes locking piece 4 realization locking to the outside to keep stable state of accomodating. The first telescopic rod 1 and the second telescopic rod 2 of the present embodiment are in gapless fit, can avoid shaking, and can be contracted and locked at any required use position or storage position.

EXAMPLE III

The embodiment is the utility model discloses a third embodiment of zero clearance quick adjustment telescopic link, this embodiment is similar with embodiment two, and the institute difference lies in, and the quantity of mounting groove 21 and locking piece 4 is the twice of bead 11 quantity, and two liang locking pieces 4 be about a set of first telescopic link 1 or second telescopic link 2 central plane mirror symmetry, as shown in fig. 5. The second inclined surfaces 9 of each rib 11 are two mirror images, and the horizontal component directions of the acting force of the two second inclined surfaces 9 on the locking block 4 are opposite. The one end of locking piece 4 contacts in the outer wall of sliding block 3, the other end contact of locking piece 4 in the lateral wall of bead 11, two liang of mirror symmetry of locking piece 4, and the motion trend of two mirror symmetry's locking piece 4 is opposite, forms the auto-lock.

The present embodiment is described by taking six locking blocks 4 and three ribs 11 as examples, and of course, the shapes of the locking blocks 4 and the ribs 11 of the present invention are not limited thereto:

as shown in fig. 5, each of the six locking blocks 4 is mirror-symmetrical, and the adjacent locking blocks 4 are respectively in contact with two side walls of the protruding rib 11. Specifically, according to the clockwise direction, six locking blocks 4 are a first locking block 41, a second locking block 42, a third locking block 43, a fourth locking block 44, a fifth locking block 45 and a sixth locking block 46, the first locking block 41 and the sixth locking block 46 are in mirror symmetry, the second locking block 42 and the fifth locking block 45 are in mirror symmetry, the third locking block 43 and the fourth locking block 44 are in mirror symmetry, the first locking block 41 and the sixth locking block 46 are respectively located on two sides of the same rib 11, the second locking block 42 and the third locking block 43 are respectively located on two sides of the same rib 11, and the fourth locking block 44 and the fifth locking block 45 are respectively located on two sides of the same rib 11. And (3) viewing in the clockwise direction: when the elastic piece 6 pushes the locking block 4, the first locking block 41 is pushed to be self-locked with the left groove surface of the installation groove 21 under the action of the first inclined surface 7 and the second inclined surface 9, the second locking block 42 is pushed to be self-locked with the left groove surface of the installation groove 21 under the action of the first inclined surface 7 and the second inclined surface 9, and the third locking block 43 is pushed to be self-locked with the right groove surface of the installation groove 21 under the action of the first inclined surface 7 and the second inclined surface 9; fourth locking piece 44 is under the effect of first inclined plane 7 and second inclined plane 9, pushed to with the left side tank surface auto-lock of mounting groove 21, fifth locking piece 45 is under the effect of first inclined plane 7 and second inclined plane 9, pushed to with the right side tank surface auto-lock of mounting groove 21, sixth locking piece 46 is under the effect of first inclined plane 7 and second inclined plane 9, pushed to with the left side tank surface auto-lock of mounting groove 21, two liang of locking pieces 4 of mirror symmetry are also mirror symmetry with the auto-lock face of mounting groove 21 cell wall. First locking piece 41, second locking piece 42, third locking piece 43, fourth locking piece 44, fifth locking piece 45 and a set of the two liang of mirror image symmetry of sixth locking piece 46, then three locking piece 4 of group promote each other, atress each other to realize the auto-lock of relative position between first telescopic link 1 and the second telescopic link 2 under the auto-lock of each locking surface, spacing or frictional force.

In the detailed description of the above embodiments, various technical features may be arbitrarily combined, and for the sake of brevity, all possible combinations of the above technical features are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A gapless quick adjustment telescopic rod comprises a first telescopic rod (1) and a second telescopic rod (2), wherein the first telescopic rod (1) is sleeved outside the second telescopic rod (2); the method is characterized in that: the sliding rod mechanism is characterized by further comprising a sliding block (3) capable of sliding in the second telescopic rod (2), a mounting groove (21) is formed in the side wall of the second telescopic rod (2), a locking block (4) is placed in the mounting groove (21), and two side faces of the locking block (4) are respectively in contact with the inner wall face of the first telescopic rod (1) and the outer peripheral face of the sliding block (3); two ends of the sliding block (3) are respectively connected with a button rod (5) and an elastic piece (6) in a compressed state, and the elastic piece (6) is connected between the inner wall of the second telescopic rod (2) and the bottom wall of the sliding block (3); the surface that sliding block (3) and locking piece (4) contacted is first inclined plane (7), and when elastic component (6) extended, sliding block (3) extrusion locking piece (4) produced outside thrust, and when button lever (5) pressed and made elastic component (6) shrink, sliding block (3) did not produce thrust to locking piece (4).

2. A slackless quick adjustment telescopic rod according to claim 1, characterized in that said sliding block (3) is conical, and the force exerted by said sliding block (3) on said locking block (4) is greater than the force exerted by said elastic member (6) on said sliding block (3).

3. The gapless quick-adjustment telescopic rod according to claim 1, wherein a plurality of uniformly distributed ribs (11) protruding from the inner wall of the first telescopic rod (1) are arranged in the first telescopic rod (1), the inner wall surfaces of the ribs (11) are attached to the outer circumferential surface of the second telescopic rod (2), and one side surface of the locking block (4) abuts against the inner wall surface of the first telescopic rod (1) or the side wall surface of the rib (11).

4. A slack-free quick adjustment telescopic rod according to claim 3, wherein one side of the locking block (4) abuts against the side wall surface of the rib (11), and the abutting surface of the locking block (4) and the rib (11) is a second inclined surface (9) capable of generating thrust on the locking block (4).

5. A slackless fast adjusting jack according to claim 4, characterized in that the force applied by said rib (11) to the locking block (4) is greater than the force applied by said sliding block (3) to the locking block (4).

6. The slack-free quick adjustment telescopic rod according to claim 4, characterized in that the horizontal component of the force of the first inclined surface (7) on the locking block (4) is in the same direction as the horizontal component of the force of the second inclined surface (9) on the locking block (4).

7. The slack-free quick adjustment telescopic rod according to claim 4, characterized in that the number of the mounting grooves (21) and the locking blocks (4) is twice the number of the ribs (11), and the locking blocks (4) are in pairs in a mirror symmetry group with respect to the central plane of the first telescopic rod (1) or the second telescopic rod (2).

8. The slack-free quick-adjustment telescopic rod according to claim 7, characterized in that the second inclined surfaces (9) of each rib (11) are two mirror images, and the horizontal component directions of the acting force of the two second inclined surfaces (9) on the locking block (4) are opposite.

9. The slack-free quick-adjustment telescopic rod according to any one of claims 1 to 8, wherein a tail ring (22) is detachably connected to one end of the second telescopic rod (2), the tail ring (22) is provided with a first accommodating cavity (23) capable of accommodating at least part of the elastic member (6), a second accommodating cavity (31) capable of accommodating at least part of the elastic member (6) is formed in the end of the sliding block (3), and two ends of the elastic member (6) are respectively arranged in the first accommodating cavity (23) and the second accommodating cavity (31).

10. The slack-free quick-adjustment telescopic rod according to any one of claims 1 to 8, characterized in that a button (8) is connected to the end of the button rod (5), the outer circumferential surface of the button (8) is in contact with the inner wall surface of the second telescopic rod (2), and the button (8) at least partially protrudes from the end surface of the second telescopic rod (2).