CN110671458A

CN110671458A - Grading spring device

Info

Publication number: CN110671458A
Application number: CN201911010619.XA
Authority: CN
Inventors: 谢德强
Original assignee: Hubei Junqian Photoelectric Technology Co Ltd
Current assignee: Hubei Junqian Photoelectric Technology Co Ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-01-10

Abstract

The invention discloses a grading spring device, which comprises a slide bar, a grading elastic pressing component, a shifting component and a limiting pipe, wherein: the sliding rod comprises a sliding rod body and a first limiting part extending out of the side face of the sliding rod body; the grading elastic pressing assembly comprises a grading pipe, a first spring and a plurality of first shifting parts, the grading groove comprises a plurality of abutting parts and a plurality of connecting parts, the connecting parts are arranged along the beta direction of the peripheral direction of the end surface of the grading pipe when viewed along the alpha direction of the axis of the grading pipe, and two ends of each connecting part are respectively communicated with the two abutting parts; the shifting assembly comprises a shifting pipe, a second spring and a plurality of second shifting parts; the limiting pipe comprises a limiting groove, a third limiting part and a chute, and the limiting groove is formed in the side face of the limiting pipe along the alpha direction. The invention can realize the graded change of the spring pressure.

Description

Grading spring device

Technical Field

The invention relates to the field of spring devices, in particular to a grading spring device.

Background

In the field of optical fiber manufacturing, spring-type clamps with simple structures are commonly used for clamping a plurality of parallel products, and under the condition of clamping more products, because the deformation of the spring is large, the clamping force is completely linearly changed along with the deformation, the clamping force is increased accordingly, the products with smaller thickness cannot be stably clamped, and the stressed deformation of the products can be caused.

Disclosure of Invention

The invention aims to overcome the technical defects and provide a grading spring device which is used for solving the problem that the clamping force of a spring clamp in the prior art is completely linearly changed along with the deformation of a spring.

In order to achieve the technical purpose, the technical scheme of the invention is as follows: the utility model provides a hierarchical spring assembly, includes slide bar, hierarchical suppression subassembly, dials bit block, spacing pipe, wherein: the slide bar comprises a slide bar body and a first limiting part extending from the side surface of the slide bar body; the grading elastic pressing assembly comprises a grading tube, a first spring and a plurality of first shifting portions, the grading tube and the slide bar are coaxially arranged and sleeved on the slide bar body, at least one grading groove is formed in the side surface of the grading tube, the first limiting portion is connected with the grading groove in a sliding mode, the grading groove comprises a plurality of abutting portions and a plurality of connecting portions, the direction along the axis of the grading tube is the alpha direction, the direction along the circumferential direction of the end surface of the grading tube is the beta direction, the plurality of abutting portions are arranged along the beta direction when viewed from the alpha direction, two ends of each connecting portion are respectively communicated with the two abutting portions, and the first spring abuts against one end surface of the grading tube; the shifting assembly comprises a shifting pipe, a second spring and a plurality of second shifting parts, the shifting pipe and the grading pipe are coaxially arranged and are sleeved on the grading pipe, the shifting pipe comprises a shifting pipe body and second limiting parts extending from the side surfaces of the shifting pipe body, the second spring is abutted against one end surface of the shifting pipe, and the second shifting parts are meshed with the first shifting parts; spacing pipe and hierarchical pipe coaxial arrangement and cover are established on dialling the position pipe, and spacing pipe includes spacing pipe body and the spacing portion of third, and spacing groove and chute are seted up to spacing pipe body side, and the spacing groove is seted up along alpha direction, and with first spacing sliding connection, and from seeing along alpha direction, the chute is for seting up along the direction slope opposite with beta direction, and chute and the spacing sliding connection of portion of second, and the spacing setting of third is at the terminal surface that spacing pipe kept away from hierarchical pipe.

Compared with the prior art, the invention has the beneficial effects that: the slide bar receives the linear change's of first spring elasticity effect at every department that keeps against department, switches different portions of keeping against and slide bar butt through shifting the position subassembly to realize that the slide bar is the same in the different portions of keeping against atress condition, the in-process slide bar atress that moves at the slide bar free end promptly is linear change no longer, but every movement one end distance gets back to an initial value and linear increase again, consequently can accomplish no matter how long distance the slide bar moves, the slide bar atress is all the time in a scope, realized the hierarchical change of spring elasticity promptly.

Drawings

FIG. 1 is an exploded view of a stepped spring assembly provided by the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 2 at A;

FIG. 3 is an exploded view of a sliding rod of a progressive spring mechanism provided in accordance with the present invention;

FIG. 4 is an exploded view of a progressive spring assembly of the present invention;

FIG. 5 is a partial enlarged view at B in FIG. 4;

FIG. 6 is an exploded view of a stepped spring assembly indexing assembly provided by the present invention;

FIG. 7 is an exploded view of a stepped spring assembly retainer tube according to the present invention;

FIG. 8 is a perspective view of a stepped spring arrangement provided by the present invention;

reference numerals: 100-grading spring device, 1-slide rod, 2-grading elastic pressing component, 3-shifting component, 4-limiting pipe, 5-third spring, 11-slide rod body, 12-first limiting part, 21-grading pipe, 22-first spring, 23-first shifting part, 31-shifting pipe, 32-second spring, 33-second shifting part, 41-limiting pipe body, 42-third limiting part, 43-first end cover, 44-second end cover, 411-limiting groove, 412-inclined groove, 111-through hole, 211-grading groove, 311-shifting pipe body, 312-second limiting part, 231-first inclined plane, 232-first shifting tooth, 233-first shifting port, 331-second shifting port, 332-second shifting tooth, 333-second slope, 2111-stop, 2112-connection.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further 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.

Referring to fig. 1 and 2, fig. 1 is an exploded view of a stepped spring device according to the present invention. This embodiment provides a hierarchical spring assembly 100, including slide bar 1, hierarchical suppress subassembly 2, dial position subassembly 3, spacing pipe 4, third spring 5, slide bar 1 is used for exporting elasticity, hierarchical suppress subassembly 2 provides elasticity for slide bar 1, it makes hierarchical suppress subassembly 2 rotatory to dial position subassembly 3, spacing pipe 4 restriction slide bar 1 rotates and holds hierarchical suppress subassembly 2 and dial position subassembly 3, third spring 5 connects dials position suppress subassembly 2 and spacing pipe 3.

Let the direction along the axis of the classifying tube 21 be the α direction, and let the direction along the circumferential direction of the end surface of the classifying tube 21 be the β direction, where the α direction may be either one of the two directions along the axis of the classifying tube 21, in this embodiment, the α direction is the direction toward the classifying tube 21 as viewed from the slide bar 1, and the β direction may be either one of the two directions along the circumferential direction of the end surface of the classifying tube 21, and in this embodiment, the β direction is the clockwise direction as viewed from the α direction.

To explain the structure of the sliding rod 1, please refer to fig. 3, fig. 3 is an exploded view of the sliding rod of the staged spring device according to the present invention.

The slide bar 1 includes a slide bar body 11 and a first limiting portion 12 extending from a side surface of the slide bar body 11, and it should be noted that, in this embodiment, a through hole 111 is formed in the side surface of the slide bar body 11, and the first limiting portion 12 is in interference fit with the through hole 111.

To explain the structure of the staged compression assembly 2, please refer to fig. 4 and 5, in which fig. 4 is an exploded view of the staged compression assembly of the staged spring device according to the present invention, and fig. 5 is a partial enlarged view of the point B in fig. 4.

The grading elastic pressing component 2 comprises a grading tube 21, a first spring 22 and a plurality of first shifting parts 23, the grading tube 21 and the sliding rod 1 are coaxially arranged and are sleeved on the sliding rod body 11, at least one grading groove 211 is formed in the side surface of the grading tube 21, the first limiting part 12 is slidably connected with the grading groove 211, it can be understood that the number of the first limiting parts 12 is less than or equal to that of the grading grooves 211, the grading groove 211 comprises a resisting part 2111 and a connecting part 2112, the resisting part 2111 is communicated with the connecting part 2112 one by one, the connecting parts 2112 are arranged along the beta direction of the end surface circumference of the grading tube 21 when viewed along the alpha direction of the axis of the grading tube 21, the first shifting parts 23 are arranged on one end surface of the grading tube 21, the first shifting parts 23 are arranged around the axis of the grading tube 21 and form a circle, the first shifting parts 23 comprise a first inclined surface 231, a first shifting tooth 232 and a first shifting hole 233 which are sequentially communicated along the beta direction, the first spring 22 abuts against one end face of the classifying pipe 21, it should be noted that the first spring 22 may be installed on any end face of the classifying pipe 21, in this embodiment, the first spring 22 is installed on an end face of the classifying pipe 21 far from the slide bar 1, so that a boss (shown in the figure, but not identified) at the end face abuts against the first spring 22, it is easy to understand that the first spring 22 is an extension spring when installed on the other end face.

To explain the structure of the stepped shift assembly 3, please refer to fig. 6, fig. 6 is an exploded view of the shift assembly of the stepped spring device according to the present invention.

The shifting assembly 3 includes a shifting tube 31, a second spring 32 and a plurality of second shifting portions 33, the shifting tube 31 includes a shifting tube body 311 and a second position-limiting portion 312 extending from a side surface of the shifting tube body, the plurality of second shifting portions 33 are disposed around an axis of the shifting tube 31 and form a circle, when viewed along an α direction, the second shifting portions 33 include a second shifting port 331, a second shifting tooth 332 and a second inclined surface 333 sequentially communicating along a β direction, the side surface of the shifting tube 31 extends out of the second position-limiting portion 312, the second shifting portions 33 are engaged with the first shifting portions 23, it should be noted that, in this embodiment, the second limiting portion 312 is connected to the shifting pipe 31 through a screw, and the second spring 32 is abutted to one end surface of the shifting pipe 31, and it should be noted that the second spring 31 can be installed on any one of the two end surfaces of the shifting pipe 31, similar to the installation manner of the first spring 22, and will not be described again here.

In a preferred embodiment, the included angle between the first shifting port 233 and the second shifting port 331 is less than or equal to 90 °.

When the first positioning portion 23 contacts the second positioning portion 33, the first positioning teeth and the second positioning teeth are tightly connected, so that the second positioning portion 33 can rotate the first positioning portion 23.

To explain the structure of the limiting tube 4, please refer to fig. 7, fig. 7 is an exploded view of the limiting tube of the staged spring device according to the present invention.

Outside hierarchical pipe 21 was located to coaxial cover of spacing pipe 4, and with hierarchical pipe 21 sliding connection, spacing pipe 4 includes spacing pipe body 41, the spacing portion 42 of third, first end cover 43, second end cover 44 and chute 412, and spacing groove 411 and chute 412 are seted up to spacing pipe body 41 side, spacing groove 411 and first spacing portion 12 sliding connection, and the spacing portion 42 of third sets up the side that keeps away from hierarchical pipe 21 at spacing pipe 4. As seen from the direction α, the inclined grooves 412 are inclined in the direction opposite to the direction β, and the inclined grooves 412 are slidably connected to the second limiting portions 312, it is easy to understand that the number of the second limiting portions 312 is less than or equal to the number of the inclined grooves 412. The first end cap 43 and the second end cap 44 are provided at both ends of the stopper tube 4, the third stopper 42 is provided on the first end cap 43, and the second end cap 44 abuts against the first spring 22 and the second spring 32.

As a preferred embodiment, the present invention provides a stepped spring device 100 further comprising a third spring 5, wherein the third spring 5 is disposed along the β direction and has two ends respectively connected to the stepped pipe 21 and the first end cap 43.

The third spring 5 always moves the classifying tube 21 in the direction β.

It should be noted that the stepped spring device 100 in this embodiment includes three movement positions: the first position where the classifying tube 21 abuts against the third stopper 42, the second position where the classifying tube 21 abuts against the first positioning portion 23 and the second positioning portion 33 and the second stopper 312 is located near the classifying tube 21, the third position where the classifying tube 21 abuts against the first positioning portion 23 and the second positioning portion 33 and the second stopper 312 is located far from the classifying tube 21. The first position, the second position, and the third position are arranged in the α direction.

In a preferred embodiment, the distance between the first position and the second position is greater than or equal to the length of the connecting portion 2112 in the α direction.

When the classifying tube 21 moves from the third position to the first position, the abutting portion 2111 is ensured to abut against the first limiting portion 12.

Referring to fig. 1 and 8, fig. 8 is a perspective view of a staged spring device according to the present invention, and the following describes in detail an assembly process of the spring device according to the present embodiment:

firstly, sliding a slide bar body 11 into a grading tube 21, sliding the grading tube 21 into a limiting tube 4, and fixing a first limiting part 12 on the slide bar body 11 through a limiting groove 411 and a grading groove 211 respectively; connecting the third spring 5 with the grading tube 21 and the first end cap 43, and fixing the first end cap 43 on the end surface of the limiting tube 4; the shifting pipe 31 is slid into the limiting pipe 4, and then the second limiting part 312 penetrates through the chute 412 and is screwed and fixed on the side surface of the shifting pipe 31; the first spring 22 is pressed into the positioning tube 31 to be abutted against the grading tube 21, the second spring 32 is pressed into the limiting tube 4 to be abutted against the positioning tube 31, and finally the second end cap 44 is fixed on the other end face of the limiting tube 4 to be abutted against the first spring 22 and the second spring 32 respectively, so that the assembly is completed.

Referring to fig. 4, the working principle of the spring device provided in this embodiment will be described in detail as follows:

for convenience of description, the resisting portions 2111 are respectively named as: the stopping part I, the stopping part II, the stopping part III and the stopping part IV are arranged along the alpha direction in sequence. The initial state classifying tube 21 is in the first position under the action of the elastic force of the first spring 22, the classifying tube 21 always has a tendency of rotating in the beta direction due to the action of the third spring 5, the first limiting part 12 is arranged in the limiting groove 411, therefore, the slide bar 1 can only move two times along the limiting groove 411 and can not rotate, and the first limiting part 12 is abutted with the abutting part I. When the slide bar 1 is pressed in the alpha direction, the abutting part I abuts against the first limit part 12, pressure acts on the slide bar 1 through the classifying tube 21, the slide bar 1 is continuously pressed in the alpha direction, the first spring 22 is compressed to enable the classifying tube 21 to move in the alpha direction, the slide bar 1 is continuously pressed in the alpha direction until the classifying tube 21 moves to the second position, the first inclined surface 231 abuts against the second inclined surface 333, the slide bar 1 is continuously pressed in the alpha direction, the first inclined surface 231 and the second inclined surface 333 slide relatively, the classifying tube 21 drives the shifting tube 31 to move in the alpha direction, meanwhile, as the second limit part 312 is connected with the inclined groove 412 in a sliding manner, the shifting tube 31 rotates along the inclined groove 412, namely rotates in the direction opposite to the beta direction, until the first shifting tooth 232 abuts against the second shifting tooth 332, the slide bar 1 is continuously pressed in the alpha direction, the shifting tube 31 rotates while continuing to move in the alpha direction, and drives the shifting tube 21 to rotate in the direction opposite to the beta direction, in the process, the acting force of the classifying tube 21 on the slide bar 1 is approximately equal to the elastic force of the first spring 22 acting on the classifying tube 21 until the first limiting part 12 is separated from the abutting part I and enters the connecting part 2112, at this time, the classifying tube 21 is not acted by the pressure applied to the slide bar 1 any more, so that the acting force of the classifying tube 21 on the slide bar 1 is reduced suddenly, the classifying tube 21 moves in the direction opposite to the direction alpha under the action of the first spring 22 until the abutting part II abuts against the first limiting part 12, the slide bar 1 continues to be acted by the elastic force of the first spring 22, and the process is repeated when the slide bar 1 continues to be pressed in the direction alpha, and the description is omitted. It is to be understood that the number of the stopping portions 2111 and the connecting portions 2112 is not limited to that in the present embodiment, and may be adjusted according to the actual situation.

Further, when the first position-limiting portion 12 moves to abut against the abutting portion iv and the first shifting tooth 232 abuts against the second shifting tooth 332, because the abutting portion iv is not provided with the connecting portion 2112 in the α direction to communicate with it, the classifying tube 21 cannot be driven to rotate by the shifting tube 31, and at this time, the sliding rod 1 is at the limit position of the movement of the sliding rod 1, and the sliding rod 1 needs to be reset to be reused, the specific process is as follows: the slide bar 1 is pulled along the direction opposite to the alpha direction, the first shifting tooth 232 part is separated from the second shifting tooth 332, the grading tube 21 moves to abut against the third limiting part 42, the slide bar 1 is continuously pulled, the first limiting part 12 slides into the abutting part III under the action of the third spring 5, the process is repeated until the first limiting part 12 slides into the abutting part I, and the resetting is completed.

In summary, because the spring force is a linear change, and cannot change suddenly, the graded spring device provided by the embodiment, the slide bar is under the action of the linearly changed spring force of the first spring at each resisting part, the different resisting parts are switched to be abutted against the slide bar through the shifting component, so that the stress condition of the slide bar at the different resisting parts is the same, namely, the stress of the slide bar is not linearly changed any more in the moving process of the free end of the slide bar, but the distance of one end of each moving part returns to an initial value and is linearly increased again, therefore, no matter how long the slide bar moves, the stress of the slide bar is always in a controllable range, and the graded change of the spring force is realized. It should be noted that, in practical use, it is recommended that the first spring has a small stiffness coefficient as much as possible, and the first spring is in a compressed state when the assembly is completed, so that the sliding rod is subjected to a certain initial force action by the first spring when the sliding rod starts to move.

The above embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a hierarchical spring assembly which characterized in that, includes slide bar, hierarchical suppress the subassembly, dials position subassembly, spacing pipe, wherein:

the sliding rod comprises a sliding rod body and a first limiting part extending out of the side face of the sliding rod body;

the grading elastic pressing assembly comprises a grading tube, a first spring and a plurality of first shifting portions, the grading tube and the slide rod are coaxially arranged and sleeved on the slide rod body, at least one grading groove is formed in the side surface of the grading tube, the first limiting portion is connected with the grading groove in a sliding mode, the grading groove comprises a plurality of abutting portions and a plurality of connecting portions, the direction along the axis of the grading tube is an alpha direction, the direction along the circumferential direction of the end surface of the grading tube is a beta direction, the plurality of abutting portions are arranged along the beta direction when viewed from the alpha direction, two ends of each connecting portion are respectively communicated with the two abutting portions, and the first spring abuts against one end surface of the grading tube;

the shifting assembly comprises a shifting pipe, a second spring and a plurality of second shifting parts, the shifting pipe and the grading pipe are coaxially arranged and are sleeved on the grading pipe, the shifting pipe comprises a shifting pipe body and a second limiting part extending out of the side face of the shifting pipe body, the second spring is abutted against one end face of the shifting pipe, and the second shifting parts are meshed with the first shifting parts;

the limiting pipe and the grading pipe are coaxially arranged and sleeved on the shifting pipe, the limiting pipe comprises a limiting pipe body and a third limiting part, a limiting groove and a chute are formed in the side face of the limiting pipe body, the limiting groove is formed in the alpha direction and is in sliding connection with the first limiting part, the chute is obliquely formed in the direction opposite to the beta direction when viewed in the alpha direction, the chute is in sliding connection with the second limiting part, and the third limiting part is arranged on the end face, far away from the grading pipe, of the limiting pipe.

2. The graded spring device according to claim 1, wherein the first shifting portions are arranged around the axis of the graded pipe and form a circle in a surrounding manner, and the first shifting portions comprise a first inclined surface, a first shifting tooth and a first shifting port which are sequentially communicated along a beta direction.

3. The stepped spring device according to claim 1, wherein a plurality of said second positioning portions are arranged around an axis of said positioning pipe and form a circle, and when viewed along said α direction, said second positioning portions comprise a second positioning opening, a second positioning tooth and a second inclined surface which are sequentially communicated along said β direction.

4. The stepped spring device according to claim 1, wherein said angled slot opens at a side of said retainer tube.

5. The stepped spring device according to claim 1, further comprising a third spring disposed along the β direction and having two ends connected to the stepped tube and the limiting tube, respectively.

6. The staged spring device of claim 1, wherein the first indexing port and the second indexing tube are slidably coupled.

7. A stepped spring device according to claim 1, wherein said stage tube movement includes two movement positions: the first position where the grading tube is abutted to the third limiting part, the first shifting part is meshed with the second shifting part, the second limiting part is located at a second position close to the grading tube, and the distance between the first position and the second position is larger than or equal to the length of the connecting part in the alpha direction.

8. The stepped spring device according to claim 1, wherein the number of the first stoppers is less than or equal to the number of the stepped grooves, and the number of the second stoppers is less than or equal to the number of the inclined grooves.

9. The stepped spring device of claim 1, wherein β is either clockwise or counterclockwise as viewed from said α direction.