CN214649633U - Expansion device - Google Patents
Expansion device Download PDFInfo
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- CN214649633U CN214649633U CN202120930296.2U CN202120930296U CN214649633U CN 214649633 U CN214649633 U CN 214649633U CN 202120930296 U CN202120930296 U CN 202120930296U CN 214649633 U CN214649633 U CN 214649633U
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- outer sleeve
- block
- section
- hole
- sliding
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Abstract
The utility model belongs to the technical field of coiled material fixing devices, and particularly discloses an expansion device, which comprises a cake-shaped baffle disc, wherein the baffle disc is fixedly connected with an outer sleeve, the outer sleeve is of a cylindrical structure, and the outer sleeve and the baffle disc are coaxially arranged; a plurality of through holes are formed in the outer sleeve, and any through hole is vertical to the axis of the outer sleeve; an expansion block is arranged in any through hole, and one end of any expansion block close to the axis of the outer sleeve is connected with a spring; one end of each spring, which is far away from the expansion block, is connected with the same inner sleeve; the inner sleeve is fixedly connected in the outer sleeve and is of a cylindrical structure coaxially arranged with the outer sleeve; the utility model provides a simple structure, convenient to use's tight device that expands.
Description
Technical Field
The utility model belongs to the technical field of the coiled material fixing device, concretely relates to tight device expands.
Background
The existing labeling and clamping devices mostly adopt a side plate pressing or hand shaft expanding mode, and the side plate pressing scheme is generally not tight and has poor positioning effect; although the positioning effect is good when the hand expanding shaft is used, the cost is too high, and the hand expanding shaft cannot be widely used; there is a need for a fastening device that is effective in positioning and has a low cost.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a simple structure, convenient to use's tight device that expands.
Based on the above purpose, the utility model adopts the following technical scheme:
an expansion device comprises a cake-shaped baffle disc, wherein an outer sleeve is fixedly connected to the baffle disc, the outer sleeve is of a cylindrical structure, and the outer sleeve and the baffle disc are coaxially arranged; a plurality of through holes are formed in the outer sleeve, and any through hole is vertical to the axis of the outer sleeve; an expansion block is arranged in any through hole, and one end of any expansion block close to the axis of the outer sleeve is connected with a spring; one end of each spring, which is far away from the expansion block, is connected with the same inner sleeve; the inner sleeve is fixedly connected in the outer sleeve, and the inner sleeve is of a cylindrical structure coaxially arranged with the outer sleeve.
Furthermore, any expansion block comprises a sliding block parallel to the through hole and a positioning block fixedly connected to one end of the sliding block far away from the inner sleeve; one end of any sliding block close to the inner sleeve is connected with the spring; any positioning block is gradually reduced along the direction away from the sliding block; any positioning block is of a straight quadrangular prism structure parallel to the circular end face of the baffle disc, and any positioning block is of a straight quadrangular prism structure vertical to the through hole; the cross section of any positioning block is isosceles trapezoid, and each positioning block comprises two isosceles trapezoid surfaces perpendicular to the baffle disc; any positioning block comprises a first inclined plane close to the blocking disc and opposite to the blocking disc, and a second inclined plane opposite to the first inclined plane, wherein the second inclined plane is one surface of the positioning block far away from the blocking disc; any positioning block comprises a first rectangular surface fixedly connected with the sliding block and a second rectangular surface opposite to the first rectangular surface, and the orthographic projection of any second rectangular surface on the first rectangular surface is located in the first rectangular surface.
Furthermore, any through hole is a stepped hole, each through hole comprises a sliding section connected with the inner sleeve, and one end of each sliding section, which is far away from the inner sleeve, is connected with a limiting section; the orthographic projection of the cross section of any limiting section on the cross section of the sliding section is positioned in the cross section of the sliding section; the projection of the cross section of any limiting section on the cross section of the sliding block is positioned in the cross section of the sliding block, namely, one part of the sliding block positioned in the sliding section can not slide into the limiting section; any sliding block slides along the through hole, and any positioning block is arranged in the limiting section; any sliding block is a stepped block matched with the through hole.
Furthermore, a first buffer surface is arranged at the joint of the sliding section and the limiting section, a second buffer surface matched with the first buffer surface is arranged on the sliding block, and the first buffer surface and the second buffer surface can be arranged into arc surfaces or inclined surfaces; when the sliding block slides to the top of sliding section to the direction of keeping away from the endotheca, second buffering face and first buffering face contact, disperse the impact force into the power of a plurality of directions, avoid sliding block and locating piece junction atress too big, increase the life of sliding block.
Furthermore, a plurality of planes are arranged on the outer ring surface of any inner sleeve, any plane is connected with the through hole, and any plane is vertical to the through hole; the spring is connected to the flat surface.
Furthermore, the sliding block and the positioning block are of an integrated structure, and the outer sleeve is provided with at least three through holes; a plurality of through holes are evenly distributed on the outer sleeve.
Furthermore, the connecting position of the first inclined plane and the second rectangular plane is set to be a round angle, so that the resistance when the coiled material is taken down is reduced, and the coiled material is taken down more conveniently.
Compared with the prior art, the utility model discloses following beneficial effect has:
the expansion block is arranged in the outer sleeve to radially position the coiled material, so that the positioning effect is good, the structure is simple, and the cost is lower; the second inclined plane on the positioning block facilitates the coiled material to press the expansion block into the through hole when the coiled material is sleeved into the jacket, so that the coiled material is prevented from interfering with the expansion block, and the coiled material can be directly sleeved on the jacket; the second rectangular surface all constitutes the right angle with two isosceles trapezoid faces, and the elasticity of spring is pressed two right angles of every piece that rises to the interior anchor ring of coiled material on, can interfere with the coiled material, prevents that the coiled material from rotating on the overcoat, and location effect is good.
The through hole is arranged as a stepped hole, so that the position of the expansion block can be limited, the expansion block is prevented from being separated from the through hole and damaging the spring under the unexpected condition, and the stability of the device is ensured; the arrangement of the inner sleeve and the outer sleeve can facilitate the processing of a stepped hole on the outer sleeve; the first buffer surface is matched with the second buffer surface, when the second buffer surface collides with the first buffer surface, the impact force is dispersed into forces in multiple directions, the excessive stress at the joint of the sliding block and the positioning block is avoided, and the service life of the expansion block is prolonged; the inner sleeve is provided with a plane, so that the spring is convenient to mount; the through holes are uniformly distributed, so that the coiled material is uniformly stressed, and the positioning effect is good.
Drawings
Fig. 1 is a front view of embodiment 1 of the present invention;
fig. 2 is a schematic view of the internal structure of embodiment 1 of the present invention;
fig. 3 is a side view of embodiment 1 of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3;
fig. 5 is a schematic structural view of an expansion block according to embodiment 1 of the present invention;
fig. 6 is a schematic view of the internal structure of the outer cover according to embodiment 1 of the present invention;
fig. 7 is a schematic structural view of an expansion block according to embodiment 2 of the present invention.
In the figure: the buffer disc comprises a baffle disc 1, an outer sleeve 2, an expansion block 3, an inner sleeve 4, a spring 5, a sliding block 6, a positioning block 7, a first inclined plane 8, a second inclined plane 9, a second rectangular plane 10, a first buffer plane 11, a second buffer plane 12 and a fillet 13.
Detailed Description
Example 1
An expansion device is shown in figures 1 and 2 and comprises a cake-shaped baffle disc 1, wherein an outer sleeve 2 is fixedly connected to the baffle disc 1, the outer sleeve 2 is of a cylindrical structure, and the outer sleeve 2 and the baffle disc 1 are coaxially arranged; the outer sleeve 2 is provided with three through holes, any one of the through holes is vertical to the axis of the outer sleeve 2, and the three through holes are uniformly distributed on the outer sleeve 2; an expansion block 3 is arranged in any through hole, and one end of any expansion block 3 close to the axis of the outer sleeve 2 is connected with a spring 5; one end of each of the three springs 5, which is far away from the expansion block 3, is connected with the same inner sleeve 4; the inner sleeve 4 is fixedly connected in the outer sleeve 2, and the inner sleeve 4 is of a cylindrical structure which is coaxial with the outer sleeve 2.
As shown in fig. 2, 3, 4 and 5, each expansion block 3 comprises a sliding block 6 parallel to the through hole, and further comprises a positioning block 7 fixedly connected to one end of the sliding block 6 far away from the inner sleeve 4, wherein the sliding block 6 and the positioning block 7 are of an integrated structure; one end of any sliding block 6 close to the inner sleeve 4 is connected with the spring 5; any one of the positioning blocks 7 is gradually reduced in the direction away from the sliding block 6; any positioning block 7 is a straight quadrangular prism structure parallel to the circular end face of the baffle disc 1, and any positioning block 7 is a straight quadrangular prism structure vertical to the through hole; the cross section of any positioning block 7 is isosceles trapezoid, and any positioning block 7 comprises two isosceles trapezoid surfaces vertical to the baffle disc 1; any positioning block 7 comprises a first inclined surface 8 which is close to the baffle disc 1 and opposite to the baffle disc 1, and also comprises a second inclined surface 9 which is opposite to the first inclined surface 8; any positioning block 7 comprises a first rectangular surface fixedly connected with the sliding block 6 and a second rectangular surface 10 opposite to the first rectangular surface, and the orthographic projection of any second rectangular surface 10 on the first rectangular surface is located in the first rectangular surface.
As shown in fig. 2 and 6, each through hole is a stepped hole, each through hole includes a sliding section connected with the inner sleeve 4, and one end of each sliding section, which is far away from the inner sleeve 4, is connected with a limiting section; the orthographic projection of the cross section of any limiting section on the cross section of the sliding section is positioned in the cross section of the sliding section; the projection of the cross section of any limiting section on the cross section of the sliding block 6 is positioned in the cross section of the sliding block 6, namely, the part of the sliding block 6 positioned in the sliding section can not slide into the limiting section; any sliding block 6 slides along the through hole, and any positioning block 7 is arranged in the limiting section; any sliding block is a stepped block matched with the through hole.
As shown in fig. 5 and 6, a first buffer surface 11 is arranged at the joint of the sliding section and the limiting section, a second buffer surface 12 matched with the first buffer surface 11 is arranged on the sliding block 6, and both the first buffer surface 11 and the second buffer surface 12 are cambered surfaces; when the sliding block 6 slides to the top end of the sliding section in the direction away from the inner sleeve 4, the second buffer surface 12 is in contact with the first buffer surface 11, so that the impact force is dispersed into forces in multiple directions, the phenomenon that the stress at the joint of the sliding block 6 and the positioning block 7 is too large is avoided, and the service life of the sliding block 6 is prolonged.
As shown in fig. 2, a plurality of planes are arranged on the outer ring surface of any inner sleeve 4, any plane is connected with the through hole, and any plane is vertical to the through hole; the spring 5 is attached to the flat surface.
When the device is used, a coiled material is sleeved into the outer sleeve 2, and when the end face of the coiled material is contacted with the second inclined surface 9, the expansion block 3 is subjected to component force in the direction of the extending through hole and moves towards the direction close to the inner sleeve 4 to compress the spring 5; after the coiled material is on the outer sleeve 2, the expansion blocks 3 are subjected to the elastic force of the spring 5, the second rectangular surface 10 and the two isosceles trapezoid surfaces form a right angle, the two right angles of each expansion block 3 are uniformly distributed on the inner ring surface of the coiled material by the elastic force of the spring 5, the right angle interferes with the coiled material, and the coiled material is radially positioned; a side plate is arranged at one end of the coiled material far away from the baffle disc 1, and the side plate and the baffle disc 1 axially position the coiled material; when the coil is removed, the side panel is removed and the coil is pulled out. Because the first inclined plane 8 and the second rectangular plane 10 form an obtuse angle, the resistance to the coiled material is small, and the coiled material can be directly pulled out.
Example 2
Compared with the embodiment 1, the joint of the first inclined surface 8 and the second rectangular surface 10 of the embodiment is provided with the round corner 13, as shown in fig. 7, the round corner 13 can reduce the resistance when the coil is taken down, so that the coil is taken down more conveniently. The method of use of this example is the same as example 1.
Claims (7)
1. The expansion device is characterized by comprising a cake-shaped baffle disc, wherein an outer sleeve is fixedly connected to the baffle disc, the outer sleeve is of a cylindrical structure, and the outer sleeve and the baffle disc are coaxially arranged; the outer sleeve is provided with a plurality of through holes, and any through hole is vertical to the axis of the outer sleeve; an expansion block is arranged in any through hole, and one end of any expansion block close to the axis of the outer sleeve is connected with a spring; one end of each spring, which is far away from the expansion block, is connected with the same inner sleeve; the inner sleeve is fixedly connected in the outer sleeve, and the inner sleeve is of a cylindrical structure coaxially arranged with the outer sleeve.
2. The expansion device according to claim 1, wherein any one of said expansion blocks comprises a sliding block parallel to the through hole, and further comprises a positioning block fixedly connected to an end of the sliding block remote from the inner sleeve; any one positioning block is gradually reduced along the direction away from the sliding block; any positioning block is a straight quadrangular prism structure parallel to the circular end face of the baffle disc; the cross section of any one positioning block is isosceles trapezoid, and each positioning block comprises two isosceles trapezoid surfaces perpendicular to the baffle disc; any positioning block comprises a first inclined plane close to the blocking disc and opposite to the blocking disc, and a second inclined plane opposite to the first inclined plane; and any one of the positioning blocks comprises a first rectangular surface fixedly connected with the sliding block and a second rectangular surface opposite to the first rectangular surface.
3. The expansion device according to claim 2, wherein any one of the through holes is a stepped hole, any one of the through holes comprises a sliding section connected with the inner sleeve, and one end of any sliding section, which is far away from the inner sleeve, is connected with a limiting section; the orthographic projection of the cross section of any one limiting section on the cross section of the sliding section is positioned in the cross section of the sliding section; any sliding block is a stepped block matched with the through hole.
4. The expansion device as claimed in claim 3, wherein a first buffer surface is provided at the junction of the sliding section and the limiting section, and a second buffer surface matched with the first buffer surface is provided on the sliding block; the first buffer surface and the second buffer surface are cambered surfaces.
5. The expansion device according to claim 4, wherein a plurality of planes are formed on the outer circumferential surface of any one of said inner sleeves, any one of said planes is connected to the through hole, and any one of said planes is perpendicular to the through hole.
6. The expansion device of claim 5, wherein the sliding block and the positioning block are of an integral structure, and the outer sleeve is provided with at least three through holes; the through holes are uniformly distributed on the outer sleeve.
7. The expansion device of claim 6, wherein the junction of the first ramp surface and the second rectangular surface is rounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120930296.2U CN214649633U (en) | 2021-04-30 | 2021-04-30 | Expansion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120930296.2U CN214649633U (en) | 2021-04-30 | 2021-04-30 | Expansion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214649633U true CN214649633U (en) | 2021-11-09 |
Family
ID=78473579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120930296.2U Active CN214649633U (en) | 2021-04-30 | 2021-04-30 | Expansion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214649633U (en) |
-
2021
- 2021-04-30 CN CN202120930296.2U patent/CN214649633U/en active Active
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