CN103362912B - Telescopic structure, sleeve and plug rod - Google Patents

Abstract

A telescopic structure includes a plug-in rod and a sleeve, the side wall of the plug-in rod is provided with a snap-fitting protrusion, the sleeve has a sleeve end that can be sleeved on the plug-in rod, the inner wall of the sleeve is provided with a slide groove, the snap-fitting protrusion can slide along the slide groove, the slide groove includes a first guide portion and a snap-fitting portion communicated with the first guide portion, the snap-fitting portion extends along the circumference of the sleeve and is spaced from the end face of the sleeve end, the first guide portion extends from the snap-fitting portion in a direction away from the end face of the sleeve end, and the first guide portion is communicated with the snap-fitting portion. The above telescopic structure is easy to use. The present invention also provides another telescopic structure, a sleeve and a plug-in rod.

Description

Telescopic structure, sleeve and inserting rod

technical field

The invention relates to a telescopic rod structure, a sleeve and a plug-in rod.

Background technique

The telescopic structure has been widely used due to its convenient length adjustment, such as supporting lamps and fans.

At present, commonly used telescopic structures include an insertion rod, a sleeve and a screw sheathed on the insertion rod. A screw hole is provided on the side wall of the sleeve, and the screw is screwed into the screw hole. When in use, the sleeve is sleeved on the insertion rod, and the screw is turned so that one end of the screw abuts against the outer surface of the insertion rod to fix the insertion rod and the sleeve together. When it is necessary to adjust the overall length of the insertion rod and the sleeve, loosen the screw so that the screw no longer bears against the insertion rod, so that the insertion rod is stretched relative to the sleeve, and then turn the screw so that one end of the screw is against the outer surface of the insertion rod This secures the insert rod and sleeve together.

However, when the length of the telescopic structure is adjusted, screws need to be tightened or loosened, which is inconvenient to use.

Contents of the invention

Based on this, it is necessary to provide an easy-to-use telescopic structure, sleeve and insertion rod.

A telescoping structure comprising:

Inserting rod, the side wall is provided with a locking protrusion;

The sleeve has a sleeve end that can be sleeved on the insertion rod, and the inner wall of the sleeve is provided with a sliding groove, and the engaging protrusion is slidable along the sliding groove, and the sliding groove includes a first a guide part and an engaging part communicated with the first guide part, the engaging part extends along the circumference of the sleeve and is spaced from the end surface of the sleeve end, the first guide part is separated from the The engaging portion extends in a direction away from the end surface of the socket end, and the first guiding portion communicates with the engaging portion.

In one of the embodiments, the first guide part is arc-shaped.

In one of the embodiments, the chute further includes a second guide part communicated with the engaging part, the second guide part extends from the engaging part toward the direction close to the end surface and passes through the end face.

In one of the embodiments, both the engaging portion and the first guiding portion are multiple, the engaging portions are arranged along the axial direction of the sleeve, and the multiple first guiding portions are engaged with the multiple engaging portions. The parts are arranged alternately and connected end to end.

Another telescoping structure, including:

The sleeve has a locking protrusion on the inner wall;

The plug-in rod has a plug-in end that can be accommodated in the sleeve, the plug-in end is cylindrical and has a sliding groove on the peripheral surface, the engaging protrusion can slide along the sliding groove, and the sliding The slot includes a first guide portion and an engaging portion communicated with the first guide portion, the engaging portion extends along the circumferential direction of the insertion end and is spaced from the end surface of the insertion end, the first guide A portion extends from the engaging portion to a direction away from the end surface of the insertion end, and the first guide portion communicates with the engaging portion.

In one of the embodiments, the chute further includes a second guide part communicated with the engaging part, the second guide part extends from the engaging part toward the direction close to the end surface and passes through the end face.

In one of the embodiments, the first guide part is arc-shaped.

In one embodiment, there are a plurality of sliding slots, which are connected end to end in sequence, and the engaging parts of the plurality of sliding slots are arranged along the axial direction of the sleeve.

A sleeve, used to cooperate with the insertion rod to form a telescopic structure, the side wall of the insertion rod is provided with an engaging protrusion, and the sleeve has a sleeve end that can be sleeved on the insertion rod, The inner wall of the sleeve is provided with a chute, and the engaging protrusion is slidable along the chute, and the chute includes a first guide portion and an engaging portion communicated with the first guide portion, the The engaging portion extends along the circumference of the sleeve and is spaced from the end surface of the socket end, the first guide portion extends from the engaging portion to a direction away from the end surface of the socket end, and the first guiding portion A guide part communicates with the engaging part.

A plug-in rod is used to cooperate with a sleeve to form a telescopic structure, the inner wall of the sleeve is provided with a locking protrusion, the plug-in rod has a plug-in end that can be accommodated in the sleeve, the The plug-in end is cylindrical and a sliding groove is opened on the peripheral surface, and the engaging protrusion is slidable along the sliding groove, and the sliding groove includes a first guiding portion and an engaging portion communicating with the first guiding portion , the engaging portion extends along the circumferential direction of the insertion end and is spaced from the end surface of the insertion end, the first guide portion extends from the engaging portion to a direction away from the end surface of the insertion end and The first guiding portion communicates with the engaging portion.

When adjusting the length of the telescopic structure, the sleeve and the insertion rod, just rotate the insertion rod to slide the engaging protrusion along the engaging part of the chute to the end of the first guide part away from the engaging part, which is convenient to use.

Description of drawings

Fig. 1 is a three-dimensional assembly view of a telescopic structure in an embodiment;

Fig. 2 is a perspective view of the sleeve of the telescopic structure in Fig. 1;

Fig. 3 is a sectional view along line III-III in Fig. 2;

Fig. 4 is a perspective view of the insertion rod of the telescopic structure in Fig. 1;

Fig. 5 is a sectional view along the line V-V in Fig. 1;

Fig. 6 is a cross-sectional view of the telescopic structure in Fig. 1 in another state.

detailed description

In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. A preferred embodiment of the invention is shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.

It should be noted that when an element is referred to as being “fixed on” another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to FIG. 1 , a telescopic structure 10 according to an embodiment includes a sleeve 100 and an insertion rod 300 . One end of the sleeve 100 is sleeved on one end of the insertion rod 300 .

Please refer to FIG. 2 and FIG. 3 at the same time. In this embodiment, the sleeve 100 is generally cylindrical. The sleeve 100 has a socket end 120 . It should be pointed out that the sleeve 100 is not limited to a cylindrical shape, and may also be rectangular, truncated or irregular in shape, as long as the sleeve end 120 of the sleeve 100 is formed with a cylindrical shape that can be sleeved on the insertion rod 300 Just the storage tank. The socket end 120 has an end face 122 . A sliding slot 140 is defined on the inner wall of the sleeve 100 .

In this embodiment, there are two sliding slots 140 and they are arranged oppositely. In other embodiments, there may be one or more sliding slots 140 . Each sliding slot 140 includes an engaging portion 142 , a first guiding portion 144 and a second guiding portion 146 .

The engaging portion 142 is separated from the end surface 122 by a predetermined distance. The engaging portion 142 extends along the circumference of the sleeve 100 . The first guide portion 144 extends from the engaging portion 142 in a direction away from the end surface 122 . In this embodiment, the first guiding portion 144 extends from one end of the engaging portion 142 to a direction away from the end surface 122 , and one end of the first guiding portion 144 communicates with one end of the engaging portion 142 . The first guiding portion 144 is arc-shaped, and in other embodiments, the first guiding portion 144 can also be a straight groove.

The second guide portion 146 extends from an end of the engaging portion 142 away from the first guide portion 144 toward the end surface 122 and penetrates through the end surface 122 . An end of the second guiding portion 146 away from the end surface 122 communicates with the engaging portion 142 . In this embodiment, the second guiding portion 146 is arc-shaped, and the engaging portion 142 is substantially tangent to the second guiding portion 146 . It should be noted that, the second guide portion 146 is not limited to be arc-shaped, and may also be a straight groove.

Please refer to FIG. 4 , the insertion rod 300 is generally cylindrical. An engaging protrusion 320 is disposed on the side wall 310 of the inserting rod 300 . In this embodiment, there are two engaging protrusions 320 , and the two engaging protrusions 320 correspond to the two slide grooves 140 respectively. It can be understood that the inserting rod 300 is not limited to being cylindrical, and may also be in the shape of a quadrangular prism or a cylinder. The edge can be.

Please refer to FIGS. 1 to 6 at the same time. When assembling, the two engaging protrusions 320 of the inserting rod 300 correspond to the two second guide parts 146 respectively, and the engaging protrusions 320 slide along the second guiding parts 146. Just insert the engaging portion 142 of the chute 140 .

When it is necessary to shorten the overall length of the inserting rod 300 and the sleeve 100, turn the inserting rod 300 so that the engaging protrusion 320 slides along the engaging portion 142 of the chute 140 to the end of the first guide portion 144 away from the engaging portion 142 .

The above-mentioned telescopic structure 10 can conveniently adjust the overall length of the inserting rod 300 and the sleeve 100 by providing the sliding groove 140 composed of the engaging portion 142 and the first guiding portion 144 on the inner wall of the sleeve 100 . When the engaging protrusion 320 slides from the engaging portion 142 to the end of the first guiding portion 144 away from the engaging portion 142 , obvious positioning can be achieved. When multiple telescopic structures 10 are used together, the overall lengths of the insertion rods 300 and the sleeves 100 of the multiple telescopic structures 10 can be adjusted to the same length without using other tools for measurement, which is more convenient.

It can be understood that the second guide portion 146 can be omitted. At this time, the engaging protrusion 320 is made of elastic material, or the inserting rod 300 and the sleeve end 120 of the sleeve 100 are interference-fitted until the engaging protrusion 320 enters the engaging portion 142 of the chute 140 during assembly. .

In other embodiments, each chute 140 includes a plurality of engaging portions 142 and a plurality of first guiding portions 144, the plurality of engaging portions 142 are generally arranged along the axial direction of the sleeve 100, and the plurality of first guiding portions 144 The plurality of engaging parts 142 are arranged alternately and connected end to end in sequence, so that the relative expansion and contraction distance of the insertion rod 300 and the sleeve 100 can be extended.

In other embodiments, each chute 140 includes a second guide portion 146, a plurality of engaging portions 142 and a plurality of first guiding portions 144, and the plurality of engaging portions 142 are generally arranged along the axial direction of the sleeve 100, A plurality of first guiding parts 144 and a plurality of engaging parts 142 are arranged alternately and connected end to end in sequence, so that when the engaging protrusion 320 is made of non-elastic material, the engaging protrusion 320 can be guided into the slide by the second guiding part 146. Sliding is realized in the groove 140 .

In addition, the engaging portion 142 can also be slightly deeper than the first guide portion 144 so that the engaging protrusion 320 is not easy to slip out of the engaging portion 142 .

It can be understood that the engaging protrusion 320 is not limited to be provided on the inserting rod 310, and can also be provided on the inner wall of the sleeve 100. Correspondingly, the inserting rod 310 is provided with an inserting end that can be accommodated in the sleeve 100, and at the inserting end It is enough to set the chute and the assembly groove on the peripheral surface to cooperate with the engaging protrusion. At this time, the engaging part of the chute is separated from the end surface of the plug-in end by a predetermined distance and extends along the circumferential direction of the plug-in end. The first guide part of the chute It only needs to extend from the engaging portion to a direction away from the end surface of the plug-in end.

It can be understood that multiple telescopic structures 10 can also be connected and used in sequence.

The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (6)

1. a stretching structure, it is characterised in that including:

Shank, sidewall is provided with snap fit tabs；

Sleeve, has the socket end that can be sheathed on described shank, and the inwall of described sleeve offers chute, Along described chute slidably, described chute includes the first guide part and guides with described first described snap fit tabs The holding section that portion communicates, described holding section along the circumferentially extending of described sleeve and with the end face phase of described socket end Interval, described first guide part from direction from described holding section to the end face away from described socket end extend and Described first guide part communicates with described holding section, and described first guide part is arc, described holding section and institute Stating the first guide part and be multiple, multiple holding sections are along the axial arrangement of described sleeve, multiple first guide parts It is arranged alternately with multiple holding sections and head and the tail are sequentially connected；Holding section is slightly deeper than the first guide part, so that engaging Projection is difficult to skid off from holding section.

Stretching structure the most according to claim 1, it is characterised in that described chute also includes with described The second guide part that holding section communicates, described second guide part from described holding section near the side of described end face To extending and running through described end face.

3. a stretching structure, it is characterised in that including:

Sleeve, inwall is provided with snap fit tabs；

Shank, has the inserted terminal that can be contained in described sleeve, and described inserted terminal is opened for cylindrical and side face Be provided with chute, described snap fit tabs along described chute slidably, described chute include the first guide part and with institute Stating the holding section that the first guide part communicates, described holding section is inserted along the circumferentially extending of described inserted terminal and with described Connect the end face of end separately, described first guide part from described holding section to the end face away from described inserted terminal Direction extends and described first guide part communicates with described holding section, and described first guide part is arc, described Chute is multiple, and head and the tail are sequentially connected, and the holding section of multiple chutes is along the axial arrangement of described sleeve； Holding section is slightly deeper, so that snap fit tabs is difficult to skid off from holding section than the first guide part.

Stretching structure the most according to claim 3, it is characterised in that described chute also includes with described The second guide part that holding section communicates, described second guide part from described holding section near the side of described end face To extending and running through described end face.

5. a sleeve, for coordinating composition stretching structure with shank, the sidewall of described shank is provided with card Close projection, it is characterised in that described sleeve has the socket end that can be sheathed on described shank, described sleeve Inwall offer chute, along described chute slidably, described chute includes the first guiding to described snap fit tabs Portion and the holding section communicated with described first guide part, described holding section along the circumferentially extending of described sleeve and with The end face of described socket end separately, described first guide part from described holding section to away from described socket end The direction of end face extends and described first guide part communicates with described holding section, and described first guide part is arc Shape, described holding section and described first guide part are multiple, and multiple holding sections are along the axial row of described sleeve Row, multiple first guide parts are arranged alternately with multiple holding sections and head and the tail are sequentially connected；Holding section is led than first Slightly deep, so that snap fit tabs is difficult to skid off from holding section to portion.

6. a shank, for coordinating composition stretching structure with sleeve, the inwall of described sleeve is provided with card Close projection, it is characterised in that described shank has the inserted terminal that can be contained in described sleeve, described grafting End offers chute for cylindrical and side face, described snap fit tabs along described chute slidably, described chute bag Including the first guide part and the holding section communicated with described first guide part, described holding section is along described inserted terminal Circumferentially extending and end face with described inserted terminal separately, described first guide part from described holding section to away from The direction of the end face of described inserted terminal extends and described first guide part communicates with described holding section, and described the One guide part is arc, and described chute is multiple, and head and the tail are sequentially connected, the edge, holding section of multiple chutes The axial arrangement of described sleeve；Holding section is slightly deeper, so that snap fit tabs is difficult to from holding section than the first guide part Skid off.