CN210423300U

CN210423300U - Multi-stage telescopic rod

Info

Publication number: CN210423300U
Application number: CN201920940237.6U
Authority: CN
Inventors: 张金龙; 王春阳
Original assignee: Shenzhen Second Intelligent Equipment Co Ltd
Current assignee: Shenzhen Second Intelligent Equipment Co Ltd
Priority date: 2019-06-20
Filing date: 2019-06-20
Publication date: 2020-04-28
Anticipated expiration: 2029-06-20

Abstract

The utility model is suitable for a extending structure field provides a multi-stage telescopic rod, including the drum of two kind at least sizes and the sliding seat of two kind at least sizes. Wherein, a sliding seat matched with the cylinder with larger size and a cylinder with smaller size are arranged in the cylinder with larger size; and the sliding seat positioned in the larger cylinder is fixedly connected with the cylinder with smaller size. And a plurality of sliding rods distributed at intervals are fixed on the inner wall of each cylinder along the circumferential direction of the cylinder, rollers are arranged on at least two opposite side surfaces of each sliding seat, the rollers are in rolling fit with the sliding rods on the outer sides of the rollers, and the rollers can roll along the sliding rods. The utility model discloses a multistage extending structure has adopted the structure of the flexible arm of flexible arm cover, has the body and feels integratively, and product appearance structure is pleasing to the eye, and occupation space is less. Moreover, the long stroke is realized, and simultaneously, the problems of shaking and deflection when the long force arm is long can be effectively solved.

Description

Multi-stage telescopic rod

Technical Field

The utility model belongs to the extending structure field especially relates to a multistage telescopic link.

Background

In the occasions where the space is limited, the appearance is strictly required, and the movement stroke is large, the adoption of a multi-stage telescopic structure is the most ideal choice, the existing multi-stage telescopic structure is basically an external overlapped structure, the movement stroke is achieved, but the appearance is not attractive, the integral feeling is avoided, the space occupation is large, and the multi-stage telescopic structure is not suitable for the occasions where the space is limited.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a multistage telescopic link aims at solving the outward appearance that multistage extending structure among the prior art exists and is not pleasing to the eye, and occupies the problem in great space.

The utility model is realized in such a way that the multi-stage telescopic rod comprises at least two sizes of cylinders and at least two sizes of sliding seats, wherein the cylinders with different sizes are nested from outside to inside from big to small in sequence; the inner part of the outer cylinder positioned outside the two adjacent cylinders is provided with a sliding seat matched with the outer cylinder in size and an inner cylinder smaller than the outer cylinder in size; the sliding seat in the outer cylinder is fixedly connected with the inner cylinder; the inner wall of each cylinder is fixedly provided with a plurality of sliding rods distributed at intervals along the circumferential direction, at least two opposite side surfaces of each sliding seat are provided with idler wheels, the idler wheels are in rolling fit with the sliding rods on the inner wall of the cylinder on the outer side of the idler wheels, and the idler wheels can roll along the sliding rods.

Furthermore, a left mounting part is arranged on the left side surface of the sliding seat, and a roller is mounted on the top surface of the left mounting part; the right side surface of the sliding seat is provided with a right side installation part, and the top surface of the right side installation part is provided with a roller; the top surface of the sliding seat is provided with an upper side installation part, and the right side surface of the upper side installation part is provided with a roller; the bottom surface of sliding seat is provided with the downside installation department, install the gyro wheel on the right flank of downside installation department.

Furthermore, four sliding rods distributed at intervals are fixed on the inner wall of each cylinder along the circumferential direction of the cylinder, and on a radial plane, the central angle formed by the adjacent two sliding rods and the center of the cylinder is 90 degrees.

Furthermore, the roller is provided with a concave nesting groove along the circumferential direction, and the shape of the nesting groove is matched with that of a sliding rod matched with the nesting groove.

Furthermore, the cross section of the sliding rod is circular, and the cross section of the nesting groove is semicircular.

Furthermore, a plurality of clamping grooves distributed at intervals are formed in the inner wall of the cylinder along the circumferential direction of the cylinder, the shapes of the clamping grooves are matched with those of the sliding rods, and the sliding rods are clamped in the clamping grooves.

Furthermore, the cross section of the clamping groove is semicircular.

Compared with the prior art, the utility model, beneficial effect lies in:

the utility model discloses a multistage extending structure has adopted the structure of the flexible arm of flexible arm cover, has the body and feels integratively, and product appearance structure is pleasing to the eye, and occupation space is less. Moreover, the long stroke is realized, and simultaneously, the problems of shaking and deflection when the long force arm is long can be effectively solved.

The utility model discloses a multistage extending structure can use in the spline structure in the accurate ball, realizes multisection pole accurate positioning to under the condition that can bear the heavy load, guaranteed very long life.

Drawings

Fig. 1 is a schematic perspective view of a multi-stage telescopic rod according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the multi-stage telescoping pole of FIG. 1;

FIG. 3 is an exploded view of the multi-stage telescoping pole of FIG. 1;

fig. 4 is a schematic perspective view of a sliding seat for mounting upper rollers according to an embodiment of the present invention.

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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment provides a multi-stage telescopic rod, which comprises cylinders with at least two sizes and sliding seats with at least two sizes. Wherein, a sliding seat matched with the cylinder with larger size and a cylinder with smaller size are arranged in the cylinder with larger size; and the sliding seat positioned in the larger cylinder is fixedly connected with the cylinder with smaller size.

As shown in fig. 1 to 3, a multi-stage telescopic rod is shown, wherein a large sliding seat 2 and a small cylinder 3 with a smaller size are embedded in a large cylinder 1 with a larger size, and the small cylinder 3 is fixedly connected with the large sliding seat 2; a smaller small sliding seat 4 is embedded in the small cylinder 3, and the smaller sliding seat 4 is connected with a smaller cylinder (not shown in the figure). The roller on the large sliding seat 2 can roll along the sliding rod 5 to realize rolling friction; when the large sliding seat 2 moves, the small cylinder 3 can move together, so that the small cylinder 3 can extend out of or retract into the large cylinder 1, and the telescopic function is realized.

Specifically, a plurality of sliding rods 5 distributed at intervals are fixed on the inner wall of each cylinder along the circumferential direction of the cylinder, rollers 6 are mounted on at least two opposite side faces of each sliding seat, the rollers 6 are in rolling fit with the sliding rods 5 on the inner wall of the cylinder on the outer side of the rollers 6, and the rollers 6 can roll along the sliding rods 5. In this embodiment, four sliding rods 5 are fixed on the inner wall of each cylinder along the circumferential direction, and on a radial plane, the central angle formed by the adjacent two sliding rods 5 and the center of the cylinder is 90 degrees.

Referring to fig. 4, a left mounting portion 21 is disposed on a left side surface of the large sliding seat 2 (or the small sliding seat 4), and a roller 6 is mounted on a top surface of the left mounting portion 21; a right mounting part 22 is arranged on the right side surface of the sliding seat 2, and a roller 6 is mounted on the top surface of the right mounting part 22; the top surface of the large sliding seat 2 is provided with an upper side installation part 23, and the right side surface of the upper side installation part 23 is provided with a roller 6; the bottom surface of sliding seat 2 is provided with downside installation department 24, install gyro wheel 6 on the right flank of downside installation department 24. The roller 6 is provided with a concave nesting groove 61 along the circumferential direction, and the shape of the nesting groove 61 is matched with the shape of the slide bar 5 matched with the nesting groove. The cross section of the sliding rod 5 is circular, and the cross section of the nesting groove 61 is semicircular.

A plurality of clamping grooves 11 distributed at intervals are formed in the inner wall of the large cylinder 1 along the circumferential direction of the large cylinder, the shapes of the clamping grooves 11 are matched with those of the sliding rods 5, and the sliding rods 5 are clamped in the clamping grooves 11. The cross section of the clamping groove 11 is semicircular. Similarly, the inner wall of the small cylinder 3 is also provided with a slot 31 with the same shape.

It is thus clear that the multistage extending structure of this embodiment has adopted the structure of the flexible arm of flexible arm cover, has the body and feels, and product appearance structure is pleasing to the eye, and occupation space is less. Moreover, the long stroke is realized, and simultaneously, the problems of shaking and deflection when the long force arm is long can be effectively solved.

The multistage telescopic structure of the embodiment can be applied to a precise spline structure in the ball screw, realizes accurate positioning of multiple sections of rods, and can bear a large load, so that the service life is extremely long.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A multi-stage telescopic rod is characterized by comprising cylinders with at least two sizes and sliding seats with at least two sizes, wherein the cylinders with different sizes are nested from outside to inside from large to small in sequence; the inner part of the outer cylinder positioned outside the two adjacent cylinders is provided with a sliding seat matched with the outer cylinder in size and an inner cylinder smaller than the outer cylinder in size; the sliding seat in the outer cylinder is fixedly connected with the inner cylinder; the inner wall of each cylinder is fixedly provided with a plurality of sliding rods distributed at intervals along the circumferential direction, at least two opposite side surfaces of each sliding seat are provided with idler wheels, the idler wheels are in rolling fit with the sliding rods on the inner wall of the cylinder on the outer side of the idler wheels, and the idler wheels can roll along the sliding rods.

2. The multi-stage telescopic rod according to claim 1, wherein a left side mounting part is provided on a left side surface of the sliding seat, and a roller is mounted on a top surface of the left side mounting part; the right side surface of the sliding seat is provided with a right side installation part, and the top surface of the right side installation part is provided with a roller; the top surface of the sliding seat is provided with an upper side installation part, and the right side surface of the upper side installation part is provided with a roller; the bottom surface of sliding seat is provided with the downside installation department, install the gyro wheel on the right flank of downside installation department.

3. The multi-stage telescopic rod according to claim 2, wherein four sliding rods are fixed on the inner wall of each cylinder at intervals along the circumferential direction, and on a radial plane, the central angle formed by the adjacent two sliding rods and the center of the cylinder is 90 degrees.

4. The multi-stage telescopic rod according to claim 1, wherein the roller is provided with a recessed nesting groove along a circumferential direction thereof, and the shape of the nesting groove matches the shape of the slide bar with which the roller is engaged.

5. The multi-stage telescopic rod according to claim 4, wherein the cross section of the sliding rod is circular in profile, and the cross section of the nesting groove is semicircular in shape.

6. The multi-stage telescopic rod according to any one of claims 1 to 5, wherein a plurality of clamping grooves are arranged on the inner wall of the cylinder at intervals along the circumferential direction of the cylinder, the shapes of the clamping grooves are matched with those of the sliding rod, and the sliding rod is clamped in the clamping grooves.

7. The multi-stage telescopic rod according to claim 6, wherein the cross section of said slot is semicircular.