Quadrilateral limiting structure for telescopic rod

Abstract

The quadrilateral limiting structure comprises an inner sleeve rod and an outer sleeve rod arranged outside the inner sleeve rod in a sleeving mode, a fixing sleeve is arranged on the outer sleeve rod, a limiting sleeve ring is arranged on the inner sleeve rod in a sleeving mode, the limiting sleeve ring is in an opening shape and is fixedly connected with the fixing sleeve, connecting parts are formed at the two ends of the limiting sleeve ring, and sliding grooves are formed in the connecting parts. A sliding groove is formed in the fixing sleeve, a connecting rod is slidably arranged in the sliding groove, a limiting rotary handle is arranged above the fixing sleeve, an extrusion part is formed on the limiting rotary handle and rotationally arranged on the connecting rod, a first spiral table is formed on the connecting part, a second spiral table is formed on the extrusion part, and the first spiral table can abut against the second spiral table when the extrusion part rotates. One end of the elastic piece is connected with a clamping tongue, a driving face is formed on the clamping tongue, an abutting plate is fixedly arranged on the limiting rotary handle, a clamping groove is formed in the abutting plate, and when the limiting rotary handle rotates, the clamping groove can be clamped with the clamping tongue. The telescopic rod limiting structure has the beneficial effect that the telescopic rod limiting structure with the self-locking function is provided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of telescopic rods, in particular to a quadrilateral limiting structure for a telescopic rod. BACKGROUND

[0002] As a kind of adjustable length rod, telescopic rod plays an important role in many fields due to its flexibility and practicality. It is not only simple in structure, easy to operate, but also strong in load capacity, convenient to use, and is an ideal choice for connection and support. The accessories of telescopic rod mainly include outer tube, inner tube and limiting structure. The limiting structure can prevent the relative movement between adjacent inner sleeve rod and outer sleeve rod, thereby fixing the length of telescopic rod.

[0003] The existing limiting structure of telescopic rod often causes telescopic rod to be accidentally telescoped due to some unexpected situations, such as accidentally touching the limiting switch.

[0004] Therefore, the quadrilateral limiting structure for telescopic rod with self-locking function is provided to avoid the limiting switch from being accidentally opened or closed. INVENTION CONTENTS

[0005] The content part of the present application is used to introduce the concept in a simple form, which will be described in detail in the specific embodiment part. The content part of the present application is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0006] In order to solve the technical problems mentioned in the background part, some embodiments of the present application provide a quadrilateral limiting structure for telescopic rod, which comprises an inner sleeve rod and an outer sleeve rod sleeved outside the inner sleeve rod. A fixed sleeve is arranged on the outer sleeve rod, and a limiting sleeve ring is sleeved on the inner sleeve rod. The limiting sleeve ring is open and fixedly connected with the fixed sleeve. The two ends of the limiting sleeve ring form a connecting part. The side wall part of the connecting part is formed through a sliding groove. A connecting rod is slidably arranged in the sliding groove. A limiting handle is arranged above the fixed sleeve. An extrusion part is formed on the limiting handle outside the connecting part. The extrusion part is rotatably arranged on the connecting rod. A first spiral table is formed on the connecting part. A second spiral table corresponding to the first spiral table is formed on the extrusion part. When the extrusion part rotates, the first spiral table can abut against the second spiral table. An elastic member is fixedly arranged on the fixed sleeve. One end of the elastic member is connected with a clamping tongue. The clamping tongue can move along the extension direction of the outer sleeve rod. A driving surface is formed on the clamping tongue. A contact plate is fixedly arranged on the limiting handle. A clamping groove is formed on the contact plate. When the limiting handle rotates, the clamping groove can be clamped with the clamping tongue.

[0007] In the working process, the fixed sleeve and the limiting sleeve ring are arranged, the connecting part can be fixed on the inner sleeve rod to limit by extruding the connecting part of the limiting sleeve ring, the limiting rotating handle drives the extruding part to rotate by rotating the limiting rotating handle, the second spiral table extrudes the first spiral table when the extruding part rotates, thereby pushing the connecting part to slide along the connecting rod and driving the limiting sleeve ring to be fixed on the inner sleeve rod, when the extruding part rotates to the fixed sleeve, the abutting plate can abut against the driving surface of the clamping tongue to push the clamping tongue to move, the clamping tongue is clamped in the clamping groove of the abutting plate, the self-locking of the limiting rotating handle is realized, and the overturning of the limiting rotating handle caused by accidental touch is avoided.

[0008] Further, the mounting portion is formed on the fixed sleeve, the side wall portion of the mounting portion is concave to form a moving groove, and the elastic member and the clamping tongue are arranged in the moving groove.

[0009] Further, the side wall portion of the moving groove is penetrated to form an unlocking groove extending along the extension direction of the outer sleeve rod, the unlocking rod is movably arranged in the unlocking groove, the unlocking rod is fixedly connected with the clamping tongue, and the unlocking plate is arranged outside the mounting portion and fixedly connected with the unlocking rod.

[0010] Further, the connecting rod is a single-end bolt, and the threaded end of the single-end bolt is fixed by using a hexagonal nut.

[0011] Further, the height of the first spiral table continuously increases in the rotating direction of the axis of the sliding groove to form a lower a end and a higher b end.

[0012] Further, two first spiral tables are arranged in a circumferential array along the axis of the sliding groove.

[0013] Further, the fixed sleeve is in an open shape, and the two ends of the fixed sleeve form fixed portions, and the two fixed portions are fixedly connected by bolts.

[0014] Further, the extruding spring is arranged on the connecting rod and located between the two connecting parts.

[0015] The application has the following beneficial effects:

[0016] I. The limiting rotating handle continuously overturns towards the fixed sleeve, drives the extruding part to rotate and makes the second spiral table extrude the first spiral table, thereby continuously pushing the two connecting parts to slide towards each other to fix the limiting sleeve ring on the inner sleeve rod to limit, when the limiting rotating handle overturns, the abutting plate can extrude the driving surface of the clamping tongue to push the clamping tongue to move and clamp the clamping groove of the abutting plate with the clamping tongue to realize the self-locking of the limiting rotating handle, and the overturning of the limiting rotating handle caused by accidental touch is avoided.

[0017] II. By arranging the unlocking plate, the clamping tongue and the clamping groove of the abutting plate are unlocked by manually pushing the unlocking plate, thereby realizing the unlocking of the limiting rotating handle to overturn the limiting rotating handle.

[0018] III. By setting the extrusion spring, when the limiting handle is unscrewed, the extrusion spring can push the two connecting parts to move away from each other, so as to release the limiting of the inner sleeve rod. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application, and are used in the interpretation and the description of the present application. The illustrative embodiments of the present application as set forth herein are intended to explain the present application and not to impose limitations on the present application.

[0020] In addition, throughout the drawings, the same or similar reference numerals designate the same or similar elements. It should be understood that the drawings are schematic, and the elements and elements are not necessarily drawn according to the scale.

[0021] In the drawings:

[0022] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application;

[0023] Figure 2 is an enlarged view of A of Figure 1

[0024] Figure 3 is an installation explosion view of part of the structure of the embodiment of the present application, mainly showing the limiting handle and the connecting part;

[0025] Figure 4 is a schematic diagram of part of the structure of the embodiment of the present application, mainly showing the extrusion spring;

[0026] Figure 5 is a sectional view of part of the structure of the embodiment of the present application, mainly showing the connecting structure of the clamping tongue and the abutting plate.

[0027] Reference numerals:

[0028] 1, inner sleeve rod; 2, outer sleeve rod; 3, fixed sleeve; 4, limiting sleeve ring; 5, connecting part; 6, sliding groove; 7, connecting rod; 8, limiting handle; 9, extrusion part; 9a, extrusion groove; 10, first spiral platform; 11, second spiral platform; 12, elastic member; 13, clamping tongue; 14, driving surface; 15, abutting plate; 16, clamping groove; 17, mounting part; 18, moving groove; 19, movable groove; 20, unlocking groove; 21, unlocking rod; 22, unlocking plate; 24, a end; 25, b end; 26, fixed part; 27, extrusion spring; 28, connecting sheet. DETAILED DESCRIPTION

[0029] ​Embodiments of the present disclosure will be described below in more detail with reference to accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be embodied in various forms and should not be interpreted as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be thoroughly and completely understood. It should be understood that the drawings of the present disclosure are only for illustrative purposes and should not be construed as limiting the scope of protection of the present disclosure.

[0030] It should also be noted that only parts related to the present application are shown in the drawings for the purpose of description. The embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0031] It should be noted that the concepts of "first", "second", etc. mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0032] It should be noted that the adjectives "one", "multiple" mentioned in the present disclosure are illustrative and not restrictive, and those skilled in the art should understand that unless otherwise explicitly stated in the context, it should be understood as "one or more".

[0033] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0034] The quadrilateral limiting structure for telescopic rod comprises an inner sleeve rod 1 and an outer sleeve rod 2 sleeved on the inner sleeve rod 1, a fixed sleeve 3 is arranged on the outer sleeve rod 2, the fixed sleeve 3 is in an open shape, two ends of the fixed sleeve 3 form fixed parts 26, the two fixed parts 26 are fixedly connected through bolts to fix the fixed sleeve 3 on the outer sleeve rod 2, a limiting sleeve ring 4 is sleeved on the inner sleeve rod 1, the limiting sleeve ring 4 is in an open shape and is fixedly connected with the fixed sleeve 3 through a connecting piece 28, two ends of the limiting sleeve ring 4 form connecting parts 5, a side wall part of the connecting part 5 is formed to pass through a sliding groove 6, a connecting rod 7 is slidably arranged in the sliding groove 6, a limiting handle 8 is arranged above the fixed sleeve 3, the limiting handle 8 is formed with a pressing part 9 located outside the connecting part 5, the pressing part 9 is rotatably arranged on the connecting rod 7, the connecting rod 7 is a single-head bolt, a threaded end of the single-head bolt is fixed with a hexagonal nut, the single-head bolt is sleeved with a pressing spring 27, the pressing spring 27 is arranged at a position between the two connecting parts 5, a side wall part of the connecting part 5 is concave to form a pressing groove 9a, an inner wall part of the pressing groove 9a is protruded to form a first spiral table 10, the height of the first spiral table 10 is continuously increased along a rotating direction of an axis of the sliding groove 6 to form a lower a end 24 and a higher b end 25, the first spiral table 10 is arranged in a circumferential array along the axis of the sliding groove 6, two, a side wall part of the pressing part 9 is protruded to form a second spiral table 11 corresponding to the first spiral table 10, the second spiral table 11 is arranged in the pressing groove 9a, the first spiral table 10 can be in contact with the second spiral table 11 when the pressing part 9 rotates;

[0035] When the inner sleeve rod 1 needs to be limited, the limiting handle 8 is rotated towards the outer sleeve rod 2, the limiting handle 8 drives the pressing part 9 to rotate along the axis of the single-head bolt, the pressing part 9 rotates to drive the second spiral table 11 to rotate, the higher end of the second spiral table 11 gradually contacts the higher end b end 25 of the first spiral table 10, thereby pressing the connecting part 5, driving the two connecting parts 5 to slide along the single-head bolt towards each other and compressing the pressing spring 27, thereby fixing the limiting sleeve ring 4 on the inner sleeve rod 1 to realize limiting; when the limiting needs to be released, the limiting handle 8 is rotated away from the outer sleeve rod 2, the higher end of the second spiral table 11 gradually approaches the lower a end 24 of the first spiral table 10, the pressing spring 27 drives the two connecting parts 5 to move away from each other, thereby releasing the limiting sleeve ring 4 and releasing the limiting of the telescopic rod.

[0036] Further, in order to avoid the telescopic rod from being accidentally stretched due to accidental rotation of the limiting handle 8 caused by accidental touch after the limiting handle 8 is rotated, a self-locking structure is arranged on the fixed sleeve 3, so that the limiting handle 8 can be locked when the limiting handle 8 is rotated towards the outer sleeve rod 2, thereby avoiding the limiting handle 8 from being rotated due to accidental touch;

[0037] Specifically, the mounting portion 17 is formed on the fixed sleeve 3, the side wall portion of the mounting portion 17 is concave to form a moving groove 18, the extension direction of the moving groove 18 is the same as the extension direction of the outer sleeve rod 2, the elastic member 12 and the clavus 13 are arranged in the moving groove 18, the elastic member 12 is a spring, one end of the spring is fixedly connected with the inner wall of the moving groove 18 and the other end is fixedly connected with the clavus 13, the clavus 13 can move along the extension direction of the moving groove 18, an inclined driving surface 14 is formed on the clavus 13, the abutting plate 15 is fixedly arranged on the limiting rotary handle 8, the clamping groove 16 is formed on the abutting plate 15, when the limiting rotary handle 8 rotates, the clamping groove 16 can be clamped with the clavus 13 to realize self-locking; the side wall portion of the moving groove 18 is penetrated to form an unlocking groove 20 extending along the extension direction of the outer sleeve rod 2, the unlocking rod 21 is movably arranged in the unlocking groove 20, the unlocking rod 21 is fixedly connected with the clavus 13, the unlocking plate 22 is arranged outside the mounting portion 17, the unlocking plate 22 is fixedly connected with the unlocking rod 21;

[0038] When the limiting rotary handle 8 is rotated towards the direction close to the outer sleeve rod 2, the abutting plate 15 can abut against the driving surface 14 on the clavus 13, thereby pushing the clavus 13 to press the spring 27, the clavus 13 can move towards the direction close to the spring, thereby making the clamping groove 16 of the abutting plate 15 clamped with the clavus 13 to lock the limiting rotary handle 8, avoiding the telescopic rod from accidentally extending or retracting due to accidental touch; when the limiting needs to be released, the clavus 13 is only needed to be pushed away from the clamping with the clamping groove 16, that is, the limiting rotary handle 8 can be rotated to release the limiting to the inner sleeve rod 1.

[0039] The above description is only some of the preferred embodiments of the present disclosure and the explanation of the applied technical principles. Those skilled in the art should understand that the application range involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combinations of the above technical features, and should also cover other technical solutions formed by any combinations of the above technical features or equivalent features without departing from the above inventive concept. For example, the above features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) to form technical solutions.

Claims

1. A quadrilateral stop structure for a telescopic pole, comprising: The inner sleeve rod (1) and the outer sleeve rod (2) are characterized in that the outer sleeve rod (2) is provided with a fixed sleeve (3), the inner sleeve rod (1) is provided with a limiting sleeve ring (4), the limiting sleeve ring (4) is open and fixedly connected with the fixed sleeve (3), both ends of the limiting sleeve ring (4) form a connecting part (5), a side wall part of the connecting part (5) penetrates to form a sliding groove (6), a connecting rod (7) is slidably arranged in the sliding groove (6), a limiting rotating handle (8) is arranged above the fixed sleeve (3), an extrusion part (9) is formed on the limiting rotating handle (8) and located outside the connecting part (5), the extrusion part (9) is rotatably arranged on the connecting rod (7), a first spiral table (10) is formed on the connecting part (5), a second spiral table (11) corresponding to the first spiral table (10) is formed on the extrusion part (9), the first spiral table (10) can be in contact with the second spiral table (11) when the extrusion part (9) rotates, an elastic member (12) is fixedly arranged on the fixed sleeve (3), one end of the elastic member (12) is connected with a clamping tongue (13), the clamping tongue (13) can move along the extension direction of the outer sleeve rod (2), a driving surface (14) is formed on the clamping tongue (13), an abutting plate (15) is fixedly arranged on the limiting rotating handle (8), a clamping groove (16) is formed on the abutting plate (15), the clamping groove (16) can be clamped with the clamping tongue (13) when the limiting rotating handle (8) rotates.

2. The quadrilateral limiting structure for the telescopic rod according to claim 1, characterized in that: an installation part (17) is formed on the fixed sleeve (3), a side wall part of the installation part (17) is concave to form a moving groove (18), the elastic member (12) and the clamping tongue (13) are arranged in the moving groove (18), and an inner wall part of the moving groove (18) penetrates to form a movable groove (19).

3. The quadrilateral limiting structure for the telescopic rod according to claim 2, characterized in that: a side wall part of the moving groove (18) penetrates to form an unlocking groove (20) extending along the extension direction of the outer sleeve rod (2), an unlocking rod (21) is movably arranged in the unlocking groove (20), the unlocking rod (21) is fixedly connected with the clamping tongue (13), and an unlocking plate (22) is arranged outside the installation part (17) and fixedly connected with the unlocking rod (21).

4. The quadrilateral limiting structure for the telescopic rod according to claim 1, characterized in that: the connecting rod (7) is a single-head bolt, and a threaded end of the single-head bolt is fixed by using a hexagonal nut.

5. The quadrilateral limiting structure for the telescopic rod according to claim 1, characterized in that: a height of the first spiral table (10) continuously increases along a rotation direction of an axis of the sliding groove (6) to form a lower a end (24) and a higher b end (25).

6. The quadrilateral limiting structure for the telescopic rod according to claim 5, characterized in that: The first spiral platform (10) is arranged in a circular array along the axis of the chute (6) and two are arranged.

7. The quadrilateral limiting structure for telescopic rod according to claim 1, characterized in that: The fixed sleeve (3) is open, and the two ends of the fixed sleeve (3) form fixed parts (26), and the two fixed parts (26) are fixedly connected by bolts.

8. The quadrilateral limiting structure for telescopic rod according to claim 1, characterized in that: The connecting rod (7) is sleeved with an extrusion spring (27), and the extrusion spring (27) is arranged at a position between the two connecting parts (5).

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