CN212127126U

CN212127126U - Simple expansion shaft

Info

Publication number: CN212127126U
Application number: CN202020611624.8U
Authority: CN
Inventors: 夏康芳; 刘大伟; 邹建辉; 杨贤; 陈宁; 付强
Original assignee: Shenzhen Suntek Technology Co ltd
Current assignee: Shenzhen Suntek Technology Co ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2020-12-11
Anticipated expiration: 2030-04-21

Abstract

The utility model discloses a simple expansion shaft, which comprises a propulsion shaft, a shaft sleeve, two expansion sliding blocks, a spring and a spring seat; a hollow slideway is arranged in the shaft sleeve, and one end part of the shaft sleeve is fixedly connected with the spring seat; one end of the propelling shaft is slidably sleeved in the slideway of the shaft sleeve, and the end of the propelling shaft is connected with the spring seat through a spring; the shaft sleeve is provided with two expansion sliding grooves penetrating from the slide way to the outside of the shaft sleeve from the middle part to one end close to the spring seat, and the two expansion sliding grooves are arranged in opposite directions; one side of each expansion sliding block is embedded in an expansion sliding chute in a sliding way and is connected with the propulsion shaft in a driving way. The utility model discloses a shrink, inflation are realized to two expansion blocks of unipolar linkage, and simple structure is small and exquisite, the operation is convenient, low cost.

Description

Simple expansion shaft

Technical Field

The utility model relates to an expansion shaft technical field especially relates to a simple and easy expansion shaft.

Background

The existing winding and unwinding shafts generally adopt inflatable expansion shafts, the expansion shaft mechanism is too complex, the volume cannot be reduced to the required range, and air supply equipment, an air path pipeline and a corresponding control system are required to be equipped during use, so that the use cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple and easy inflation axle adopts two expansion slide blocks of unipolar linkage to realize shrink, inflation, and simple structure is small and exquisite, the operation is convenient, low cost.

In order to realize the purpose, the following technical scheme is adopted:

a simple expansion shaft comprises a propelling shaft, a shaft sleeve, two expansion sliding blocks, a spring and a spring seat; a hollow slideway is arranged in the shaft sleeve, and one end part of the shaft sleeve is fixedly connected with the spring seat; one end of the propelling shaft is slidably sleeved in the slideway of the shaft sleeve, and the end of the propelling shaft is connected with the spring seat through a spring; the shaft sleeve is provided with two expansion sliding grooves penetrating from the slide way to the outside of the shaft sleeve from the middle part to one end close to the spring seat, and the two expansion sliding grooves are arranged in opposite directions; one side of each expansion sliding block is embedded in an expansion sliding chute in a sliding way and is connected with the propulsion shaft in a driving way.

Further, the simple expansion shaft further comprises at least one pushing pin; one side of each expansion sliding block embedded in the expansion sliding chute is provided with at least one guide inclined hole; the guide inclined holes of the two expansion sliding blocks are symmetrically arranged; each propelling pin is fixedly connected with the propelling shaft and is used for sliding and guiding in a guiding inclined hole.

Further, the shaft sleeve further comprises a material leaning plate, and the material leaning plate is fixedly installed on the shaft sleeve and is located at the end part, far away from the spring seat, of the expansion sliding groove.

Furthermore, one end part of the propelling shaft, which is far away from the spring, is fixedly connected with a pushing sheet.

Further, the simple expansion shaft also comprises a coil material clamping rod; the coil material clamping rod is detachably connected with the end part of the shaft sleeve close to the spring seat and used for clamping materials on the surface of the shaft sleeve.

By adopting the scheme, the shrinkage and expansion functions are realized by the single-shaft linkage of the two expansion sliding blocks, the expansion mechanism can be used for the core shaft of a coiled material, and is simple and small in structure, convenient to operate, efficient, reliable, low in cost and easy to popularize and apply.

Drawings

Fig. 1 is a perspective view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a perspective view of the propulsion shaft and the propulsion pin of the present invention;

fig. 4 is a perspective view of the shaft sleeve of the present invention;

fig. 5 is a perspective view of the expansion block of the present invention;

wherein the figures identify the description:

1-a propulsion shaft, 2-a shaft sleeve,

3-an expansion slide block, 4-a spring,

5-a spring seat, 6-a pushing pin,

7-coil clamping bar, 11-pushing sheet,

21-an expansion chute, 22-a material leaning plate,

31-guiding inclined hole.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 5, a simple expansion shaft includes a propulsion shaft 1, a shaft sleeve 2, two expansion sliders 3, a spring 4, and a spring seat 5; a hollow slideway is arranged in the shaft sleeve 2, and one end part of the shaft sleeve 2 is fixedly connected with a spring seat 5; one end of the propelling shaft 1 is slidably sleeved in the slideway of the shaft sleeve 2, and the end of the propelling shaft is connected with a spring seat 5 through a spring 4; the shaft sleeve 2 is provided with two expansion sliding grooves 21 penetrating from the slide way to the outside of the shaft sleeve 2 from the middle part to one end close to the spring seat 5, and the two expansion sliding grooves 21 are arranged oppositely; one side of each expansion slide block 3 is slidably embedded in an expansion slide groove 21 and is in driving connection with the propulsion shaft 1.

Wherein the simple expansion shaft further comprises at least one pushing pin 6; at least one guide inclined hole 31 is formed in each side, embedded in the expansion sliding chute 21, of each expansion sliding block 3; the guide inclined holes 31 of the two expansion sliding blocks 3 are symmetrically arranged; each propulsion pin 6 is fixedly connected with the propulsion shaft 1, and each propulsion shaft 6 is used for sliding guidance in a guiding inclined hole 31.

In one embodiment, the number of the pushing pins 6 is two, and two corresponding guiding inclined holes 31 are formed in each expansion sliding block 3; the inclined guide holes 31 of one expansion slide block 3 and the inclined guide holes 31 of the other expansion slide block 3 are symmetrically arranged one by one, and the two inclined guide holes 31 which are mutually symmetrical are distributed in a transverse splayed shape. A through hole is formed in the middle of the propulsion shaft 1, and the opening of the through hole corresponds to the 21 openings of the two expansion sliding chutes; the two expansion sliding blocks 3 respectively penetrate through the corresponding expansion sliding grooves 21 and are embedded into the through holes; the middle part of the propelling pin 6 penetrates through two guide inclined holes 31 which are symmetrical with each other, and two ends of the propelling pin 6 are fixedly connected with two inner walls of the through hole. The spring seat 5 is connected with the shaft sleeve 2 through bolts; one end of the spring 4 is sleeved at the end part of the propulsion shaft 1, and the other end of the spring is abutted against the spring seat 5; when the propulsion shaft 1 slides to extrude the spring 4, the propulsion pin 6 slides along the two guide inclined holes 31 which are symmetrical with each other so as to drive the two expansion sliding blocks 3 to approach each other and gradually contract inwards; when the propulsion shaft 1 is released, the propulsion shaft 1 is restored to the position due to the elastic action of the spring 4, and the two expansion sliding blocks 3 are driven to move away from each other along the guide inclined hole 31 and expand outwards.

The shaft sleeve 2 further comprises a material abutting plate 22, and the material abutting plate 22 is fixedly installed on the shaft sleeve 2 and is located at the end part, far away from the spring seat 5, of the expansion chute 21. The material leaning plate 22 is used for positioning materials during material rolling.

One end part of the propulsion shaft 1, which is far away from the spring, is also fixedly connected with a pushing sheet 11 for increasing the stress surface of the end part of the propulsion shaft 1 and facilitating the pushing of the propulsion shaft 1 to slide in the slideway.

The simple expansion shaft also comprises a coil material clamping rod 7; the material transferring clamping rod 7 is detachably connected with the end part of the shaft sleeve close to the spring seat 5. The coil stock clamping rod 7 is of a J-shaped structure, one end of the hook-shaped coil stock clamping rod is clamped in the shaft sleeve 2, and the other end of the hook-shaped coil stock clamping rod is used for clamping and fixing one end of a material on the surface of the shaft sleeve 2 when the coil stock is coiled.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements 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 simple expansion shaft is characterized by comprising a propelling shaft, a shaft sleeve, two expansion sliding blocks, a spring and a spring seat; a hollow slideway is arranged in the shaft sleeve, and one end part of the shaft sleeve is fixedly connected with the spring seat; one end of the propelling shaft is slidably sleeved in the slideway of the shaft sleeve, and the end of the propelling shaft is connected with the spring seat through a spring; the shaft sleeve is provided with two expansion sliding grooves penetrating from the slide way to the outside of the shaft sleeve from the middle part to one end close to the spring seat, and the two expansion sliding grooves are arranged in opposite directions; one side of each expansion sliding block is embedded in an expansion sliding chute in a sliding way and is connected with the propulsion shaft in a driving way.

2. The simple expansion shaft of claim 1 further comprising at least one push pin; one side of each expansion sliding block embedded in the expansion sliding chute is provided with at least one guide inclined hole; the guide inclined holes of the two expansion sliding blocks are symmetrically arranged; each propelling pin is fixedly connected with the propelling shaft and is used for sliding and guiding in a guiding inclined hole.

3. The simple expansion shaft as claimed in claim 1, wherein the sleeve further comprises a material-receiving plate, and the material-receiving plate is fixedly mounted on the sleeve and located at an end of the expansion chute away from the spring seat.

4. The simple expansion shaft of claim 1, wherein a pushing plate is further fixedly connected to an end of the pushing shaft away from the spring.

5. The simple expansion spool of claim 1 further comprising a coil clamping bar; the coil material clamping rod is detachably connected with the end part of the shaft sleeve close to the spring seat and used for clamping materials on the surface of the shaft sleeve.