CN211093838U

CN211093838U - Locking structure of telescopic rod piece

Info

Publication number: CN211093838U
Application number: CN201921075882.2U
Authority: CN
Inventors: 张巨鸿; 宋潘维
Original assignee: Jiaxing Jieshun Tourism Products Co ltd
Current assignee: Suqian Yijie smart home Co., Ltd
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2020-07-28
Anticipated expiration: 2029-07-10
Also published as: WO2021004271A1

Abstract

The utility model belongs to the technical field of cleaning supplies, concretely relates to locking structure of flexible member. The locking structure of the telescopic rod piece of the utility model is used between the inner rod and the outer rod which are axially telescopic, and the outer rod and the inner rod are mutually sleeved; comprises a shaft sleeve provided with a through hole; the end part of the outer rod on the side connected with the inner rod is fixed in the through hole; the side wall of the shaft sleeve is provided with a shaft hole communicated with the through hole, and the shaft hole faces towards the inner rod; the wrench is rotatably connected with the shaft sleeve at the shaft hole and is provided with a pressing block which is accommodated in the shaft hole and faces the inner rod; when the wrench rotates along the circumferential direction of the shaft hole, the pressing block presses or is far away from the inner rod; the briquetting oppresses interior pole makes the scalable state between interior pole and the outer pole obtains the locking, the briquetting is kept away from interior pole makes the scalable state between interior pole and the outer pole obtains the unblock. The utility model discloses a locking structure of flexible member, simple structure, and unblock or locking balance hard.

Description

Locking structure of telescopic rod piece

Technical Field

The utility model relates to a domestic cleaning apparatus field, concretely relates to locking structure of flexible member.

Background

Common household cleaning tools, such as mops, cleaning brushes, window cleaners, floor sweepers, brooms and the like, are all of structures with a cleaning body connected with a hand lever, and meanwhile, in order to adapt to cleaning places in a wider range, the hand lever is designed to be in a variable-length form.

For example, in the chinese patent publication CN105919524A entitled "a rotary dewatering mop", the disclosed structure for adjusting the length of the handle bar is: the mop rod comprises an outer pipe and an inner pipe, and the outer pipe and the inner pipe are mutually sleeved. The lock sleeve is fixedly connected with the outer pipe and is provided with a locking mechanism capable of locking the relative displacement of the outer pipe and the inner pipe. The locking mechanism comprises a trigger, the trigger is hinged with the lock sleeve, a pressing block is arranged on the trigger, and a hole site through which the pressing block can penetrate is arranged on the lock sleeve; the trigger is pulled off, and the pressing block props against the inner pipe through the hole site, so that the relative fixation between the outer pipe and the inner pipe is completed. In the hinge pulling mode, pulling force is unbalanced, and the hinge shaft is easy to damage.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a locking structure of flexible member for the locking and the unblock atress of flexible member are balanced, prolong locking structure's life.

The technical scheme adopted by the utility model for solving the above problems is to provide a locking structure of a telescopic rod piece, which is used between an inner rod and an outer rod which are axially telescopic, wherein the outer rod and the inner rod are mutually sleeved; comprises that

The shaft sleeve is provided with a through hole; the end part of the outer rod on the side connected with the inner rod is fixed in the through hole; the side wall of the shaft sleeve is provided with a shaft hole communicated with the through hole, and the shaft hole faces towards the inner rod;

the wrench is rotatably connected with the shaft sleeve at the shaft hole and is provided with a pressing block which is accommodated in the shaft hole and faces the inner rod;

when the wrench rotates along the circumferential direction of the shaft hole, the pressing block presses or is far away from the inner rod; the briquetting oppresses interior pole makes the scalable state between interior pole and the outer pole obtains the locking, the briquetting is kept away from interior pole makes the scalable state between interior pole and the outer pole obtains the unblock.

Further, the through hole comprises a large-diameter section and a small-diameter section, the large-diameter section is matched with the outer diameter of the outer rod, and the small-diameter section is matched with the outer diameter of the inner rod; the inner diameter of the small-diameter section is smaller than the outer diameter of the outer rod.

Furthermore, the pressing block and the shaft sleeve are circumferentially limited, and a pressing surface facing the inner rod and matched with the outer surface of the inner rod is formed on the pressing block.

Furthermore, a clamping groove is formed in the shaft sleeve, and a protrusion is formed in the circumferential direction of the pressing block; the protrusion extends into the clamping groove and is limited by the clamping groove.

Further, the wrench is in threaded connection with the shaft sleeve; when the wrench and the shaft sleeve rotate along with the threads, the pressing block is far away from or presses the inner rod.

Furthermore, the wrench is provided with a push block which is abutted against the pressing block; the pressing block faces the pushing block to form an inclined plane; the inclined surface is an arc surface or a plane; when the wrench rotates, the abutting part of the push block and the pressing block gradually changes along with the inclined plane, and the pressing block presses or is far away from the inner rod.

Furthermore, a circumferential limiting structure is arranged between the shaft sleeve and the wrench and used for limiting the relative rotation between the wrench and the shaft sleeve.

Further, the relative rotation angle between the wrench and the shaft sleeve is less than or equal to 90 degrees.

Further, the shaft sleeve is provided with an opening neck which is screwed with the wrench; the circumferential limiting structure comprises limiting ribs arranged on the outer wall and/or the inner wall of the opening neck part and limiting blocks arranged on the wrench; the limiting block is connected with the wrench in a rotating mode, and the wrench is rotated to be abutted to the limiting rib.

The locking structure of the telescopic rod piece provided by the utility model locks or unlocks the telescopic of the rod piece through the rotation of the wrench, and has simple structure; and the circumferential rotation of the wrench relative to the shaft hole enables the unlocking or locking force to be balanced.

Drawings

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings:

fig. 1 is an exploded view of the locking structure of the telescopic rod of the present invention;

FIG. 2 is a schematic view of the wrench of FIG. 1 in the direction A;

fig. 3 is a sectional view of the locking structure of the telescopic link according to the present invention locking the inner rod and the outer rod;

description of the figure numbering:

1-an inner rod; 2-outer pole; 3-shaft sleeve, 31-large diameter section, 32-small diameter section, 33-shaft hole, 34-clamping groove, 35, 36-limiting rib and 37-through hole; 4-wrench, 41-pressing surface, 42-pushing block, 43-pressing block, 43 a-projection and 44-limiting block.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to 3, the locking structure of the telescopic rod of the present invention is used between an inner rod 1 and an outer rod 2 which are axially telescopic. Wherein, the outer rod 2 and the inner rod 1 are sleeved with each other. The locking structure of the telescopic rod comprises a shaft sleeve 3 and a wrench 4. The sleeve 3 is provided with a through hole 37. The end of the outer rod 2 connected to the inner rod 1 is fixed in the through hole 37. The shaft sleeve 3 is fixed with the outer rod 2. The side wall of the shaft sleeve 3 is provided with a shaft hole 33 communicated with the through hole 37. The shaft hole 33 faces the inside lever 1. Preferably, in the present embodiment, the axis of the shaft hole 33 is perpendicular to the axis of the inner rod 1. The wrench 4 is rotatably connected to the sleeve 3 at the shaft hole 33, and a pressing block 43 extending into the shaft hole 33 and facing the inner rod 1 is formed.

When the wrench 4 rotates circumferentially along the shaft hole 33, the pressing piece 43 presses or separates from the inner rod 1. The pressing block 43 presses the inner rod 1 so that the telescopic state between the inner rod 1 and the outer rod 2 is locked. On the contrary, the pressing block 43 is away from the inner rod 1 so that the telescopic state between the inner rod 1 and the outer rod 2 is unlocked, and thus the inner rod 1 and the outer rod 2 can be mutually telescopic. The term "away" is used herein to refer to a state of "pressing", in which the inner rod 1 and the outer rod 2 are in a telescopic state and are unlocked when the pressing block 43 no longer generates a pressing force on the inner rod 1.

When the utility model is used for a household cleaning tool, the telescopic state between the inner rod 1 and the outer rod 2 is locked when the cleaning tool is used or stored, so that the total length of the inner rod 1 and the outer rod 2 is fixed; meanwhile, the telescopic state between the inner rod 1 and the appearance 2 can be unlocked, so that the distance between the inner rod 1 and the outer rod 2 can be adjusted according to the use occasions of household cleaning tools or the height, the needs and the like of users.

The utility model discloses a cooperation of axle sleeve 3 and spanner 4 can be accomplished, simple structure. The running track of the wrench 4 is circumferentially rotated along the shaft hole 33, so that the force is applied uniformly when the wrench 4 is wrenched, and the use comfort is also improved.

The shaft sleeve 3 and the outer rod 2 can be fixed in various fixing forms commonly used by those skilled in the art, such as threaded screwing, fastener fixing, pin shaft connection, expansion connection and the like. Preferably, in the present embodiment, the through hole 37 includes a large diameter section 31 and a small diameter section 32. The large diameter section 31 is matched with the outer diameter of the outer rod 2, and the small diameter section 32 is matched with the outer diameter of the inner rod 1. Wherein the diameter of the small-diameter section 32 is smaller than the outer diameter of the outer rod 2. Thereby, the outer rod 2 is limited to the large diameter section 31.

The pressing block 43 is circumferentially limited with the shaft sleeve 3, and the pressing block 43 is formed with a pressing surface 41 facing the inner rod 1 and matched with the outer surface of the inner rod 1. For example, in the present embodiment, the inside lever 1 is a circular tube, and the pressing surface 41 has an arc shape matching the outer periphery of the inside lever 1. Therefore, the contact area between the pressing surface 41 and the outer surface of the inner rod 1 can be increased, when the pressing block 43 presses the inner rod 1, the acting force between the pressing surface 41 and the inner rod 1 is more balanced, the stressed part is not easy to damage, and the service lives of the pressing block 43 and the inner rod 1 are prolonged.

The pressing block 43 and the shaft sleeve 3 are circumferentially limited, and can be: the sleeve 3 is formed with a catching groove 34, and a protrusion 43a is formed in the circumferential direction of the pressing piece 43. The projection 43a extends into the card slot 34 and is defined by the card slot 34, as shown in fig. 1. Or, the clamping groove 34 is arranged in the axial direction of the pressing block 43, and the protrusion 43a is arranged on the shaft sleeve 3, and the simple deformation is all within the protection scope of the present invention.

In this embodiment, the wrench 4 is screwed to the sleeve 3. For example, the shaft sleeve 3 is provided with an external thread, the wrench 4 is provided with an internal thread matched with the external thread, and the wrench 4 is screwed on the shaft sleeve 3; or, spanner 4 is equipped with the external screw thread, and axle sleeve 3 is equipped with the internal thread that matches with the external screw thread, and spanner 4 stretches into axle sleeve 3 soon. When the wrench 4 and the shaft sleeve 3 rotate along with the inclined rotation of the thread, the pressing block 43 is far away from or presses the inner rod 1. The thread form achieves two purposes, and can be used as a connecting structure between the wrench 4 and the shaft sleeve 3; meanwhile, the inclination of the thread is effectively utilized, and an additional structure for enabling the pressing block 43 to be far away from or press the inner rod 1 is not needed.

In the present embodiment, the wrench 4 has a pushing block 42 formed at the shaft hole 33, and the pushing block 42 abuts against the pressing block 43. The pressing piece 43 is inclined toward the pushing piece 42. The inclined surface may be a curved surface or an inclined surface. Preferably, in the present embodiment, the pressing block 43 forms a groove toward the pushing block 42, and the side wall of the groove is a symmetrical slope. The pressing block 43 and the pushing block 42 are arranged separately, so that the parts are simpler to process and are suitable for actual batch production. When the wrench 4 rotates, the contact portion between the pushing block 42 and the pressing block 43 gradually changes along with the slope. Thereby, the push block 42 presses the inner rod 1 against the push block 43; or, the pushing block 42 releases the pushing force on the pressing block 43, and the pressing force of the pressing block 43 on the inner rod 1 is reduced accordingly.

A circumferential limiting structure is arranged between the shaft sleeve 3 and the wrench 4 and used for limiting the relative rotation between the wrench 4 and the shaft sleeve 3.

Preferably, the relative rotation angle between the wrench 4 and the bushing 3 is less than or equal to 90 °. Thereby preventing over-rotation of the wrench 4 and extending the service life of the locking structure.

The sleeve 3 has an open neck portion formed in the shaft hole 33 and screwed to the wrench 4. The circumferential limiting structure comprises limiting ribs arranged on the outer wall and/or the inner wall of the opening neck part and a limiting block 44 arranged on the wrench. The limiting block 44 rotates along with the wrench 4 to abut against the limiting rib, and the wrench 4 finishes rotating.

In this embodiment, the inner wall of trompil neck is located to spacing muscle 36, and spanner 4 is equipped with the stopper 44 that matches with the spacing muscle 36 of second, on spanner 4 and the maximum rotation angle of axle sleeve 3, spacing muscle 36 and stopper 44 butt each other to spanner 4 can not further rotate relative axle sleeve 3, obtains spacingly.

Further, in this embodiment, the outer wall of opening neck is equipped with the external screw thread that connects the matching with spanner 4 soon, and the external screw thread is equipped with spacing muscle 35. Thus, the end of the thread on the wrench 4 (i.e., the stopper of the wrench 4 on the outer wall of the neck) is abutted when correspondingly rotated to the stopper rib 35, so that the wrench 4 cannot further rotate relative to the sleeve 3, and is limited. All set up two spacing muscle (35, 36) through interior outer wall, spanner 4 all receives spacingly on two direction of rotation, and it all receives rotation spacing when locking and unblock promptly to spanner 4's excessive rotation has further been prevented. Of course, spacing in two directions also can all set up in the inboard of opening neck through two spacing muscle, or two spacing muscle all set up in the outside of opening neck and realize, these simple deformations are all in the utility model discloses a protection range.

The above description in this specification is merely illustrative of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. A locking structure of a telescopic rod piece is used between an inner rod and an outer rod which are axially telescopic, and the outer rod and the inner rod are mutually sleeved; the method is characterized in that: comprises that

2. The lock structure of a telescopic rod of claim 1, wherein the through-hole includes a large diameter section matching an outer diameter of the outer rod and a small diameter section matching an outer diameter of the inner rod; the inner diameter of the small-diameter section is smaller than the outer diameter of the outer rod.

3. The telescopic rod locking structure of claim 1, wherein the pressing block is circumferentially limited to the bushing, and the pressing block is formed with a pressing surface facing the inner rod and matching with the outer surface of the inner rod.

4. The telescopic rod locking structure of claim 3, wherein the bushing is formed with a catching groove, and the pressing block is formed with a projection in a circumferential direction; the protrusion extends into and is defined by the slot.

5. The locking structure of a telescopic link according to claim 1, wherein said wrench is screw-coupled with said bushing; when the wrench and the shaft sleeve rotate along with the threads, the pressing block is far away from or presses the inner rod.

6. The locking structure of a telescopic rod as claimed in any one of claims 1 to 5, wherein said wrench is provided with a push block abutting against a pressing block; the pressing block faces the pushing block to form an inclined plane; the inclined surface is an arc surface or a plane; when the wrench rotates, the contact part of the push block and the press block gradually changes along with the inclined plane, and the press block presses or is far away from the inner rod.

7. The telescopic rod locking structure of claim 6, wherein a circumferential limiting structure is provided between the bushing and the wrench for limiting relative rotation between the wrench and the bushing.

8. The locking structure of a telescopic link according to claim 7, wherein the relative rotation angle between said wrench and said bushing is 90 ° or less.

9. The locking structure of a telescopic rod as claimed in claim 7, wherein said bushing is formed with an open neck portion to be screwed with a wrench; the circumferential limiting structure comprises limiting ribs arranged on the outer wall and/or the inner wall of the opening neck part and limiting blocks arranged on the wrench; the limiting block is connected with the wrench in a rotating mode, and the wrench is rotated to be abutted to the limiting rib.