CN213322398U - Anti-pricking compasses - Google Patents
Anti-pricking compasses Download PDFInfo
- Publication number
- CN213322398U CN213322398U CN202022126094.0U CN202022126094U CN213322398U CN 213322398 U CN213322398 U CN 213322398U CN 202022126094 U CN202022126094 U CN 202022126094U CN 213322398 U CN213322398 U CN 213322398U
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- Prior art keywords
- push rod
- hole
- tongue piece
- mounting hole
- compass
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- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Abstract
The utility model discloses a hand-pricking prevention compass, including location foot and pilot pin, set up the portion of inserting on the location foot, be provided with the mounting hole that runs through the head and the tail on the portion of inserting, set up push rod, locating part and reset spring in the mounting hole, the push rod head end stretches out from mounting hole head end drill way, the push rod tail end sets up the pilot pin, push rod one side that is located in the mounting hole sets up the tongue piece of outside perk, set up the lug on the tongue piece lateral surface, set up the through-hole on the corresponding pore wall, set up reset spring between locating part and the installation pore wall, open the spout on the push rod, insert the locating part and stretch into the spout with spacing push rod from the outer wall; the push rod is pressed to move downwards until the lug on the tongue piece is arranged in the through hole, the return spring is compressed, and meanwhile, the positioning needle extends out of the opening at the tail end of the through hole; the convex block is pressed to be separated from the through hole wall for limitation, the push rod is reset under the action of the reset spring, and the telescopic pin structure avoids the phenomenon of pricking hands.
Description
Technical Field
The utility model relates to a study article technical field, concretely relates to prevent pricking hand compasses.
Background
Compasses are commonly used school supplies, and the general structure is as follows: the compasses comprise a compasses head, a positioning pin and a rotating pin, wherein the positioning pin and the rotating pin are hinged on the compasses head to be folded or unfolded, and the positioning pin is fixed on the positioning pin.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical defect, the utility model provides a following technical scheme:
the hand pricking preventing compass comprises a positioning pin and a positioning needle, wherein the positioning pin is provided with a plug-in part, the plug-in part is provided with a mounting hole penetrating through the head and the tail of the positioning pin, a push rod, a limiting part and a return spring are arranged in the mounting hole, the head end of the push rod extends out of a hole at the head end of the mounting hole, the tail end of the push rod is provided with the positioning needle, one side of the push rod in the mounting hole is provided with an outward-warped tongue piece, the outer side surface of the tongue piece is provided with a convex block, a through hole is formed in the corresponding hole wall, the return spring is arranged between the limiting part and the mounting hole wall, the push rod;
the push rod is pressed to move downwards until the lug on the tongue piece is arranged in the through hole, the return spring is compressed, and meanwhile, the positioning needle extends out of the opening at the tail end of the through hole; the convex block is pressed to be separated from the through hole wall for limitation, and the push rod is reset under the action of the reset spring.
This compasses improve location foot structure to push rod, reset spring and tongue piece cooperate and make the stitch form telescopic structure, push out the stitch during the use, and the time spent not, in the stitch withdrawal mounting hole, avoid pricking the hand phenomenon to take place.
Furthermore, the upper portion of the push rod is provided with a sliding groove, and the push rod below the tongue piece is sleeved with a return spring, so that the novel push rod is reasonable in layout and convenient to install.
Furthermore, the push rod corresponding to the inner side surface of the tongue piece is provided with a groove, so that the material consumption of the push rod is reduced, and in addition, the tongue piece is provided with sufficient movable space.
Furthermore, a guide post is arranged on the push rod above the tongue piece, a groove is formed in the corresponding hole wall, and the guide post moves along the groove, so that the lug on the tongue piece is conveniently arranged in the through hole.
Furthermore, the head end of the push rod is provided with a pressing cap, so that the finger can press the push rod conveniently.
Furthermore, the insertion part and the positioning pin are integrally formed, so that the forming is convenient.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the compasses improve the structure of the positioning foot, change the prior fixed stitch into a telescopic structure, and avoid the phenomenon of pricking hands or pricking injuries.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is an overall structure view of the compasses;
FIG. 2 is a view showing the construction of a push rod;
wherein the reference numerals are:
1. a compass head; 2. a positioning leg; 3. a rotating foot; 4. a pen; 5. a fastening body; 6. a nut; 7. a plug-in portion; 8. a push rod; 9. a positioning pin; 10. a tongue piece; 11. a bump; 12. a return spring; 13. a chute; 14. pressing the cap; 15. a guide post; 16. a through hole; 17. and a limiting member.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
As shown in figure 1, the compasses are of a conventional structure on the whole, a positioning pin 2 and a rotating pin 3 are hinged on a compasses head 1, the positioning pin and the rotating pin are folded or unfolded by applying force, an annular fastening body 5 is formed at the tail end of the rotating pin, a threaded surface is formed on one side of the fastening body, a nut is installed on the threaded surface, and a lead pen 4 pressed out of a hole of the fastening body is fixed by screwing the nut 6.
The structure of key improvement location foot, specifically speaking, as shown in fig. 1, fig. 2, integrated into one piece plug-in portion 7 on the location foot, the barrel, it has the mounting hole that runs through the head and the tail to open in the plug-in portion, insert push rod 8 in the mounting hole, spout 13 is opened on the upper portion of push rod, logical groove structure, the trompil is in order to insert locating part 17 on the outer wall of plug-in portion, the selection of locating part is like cylinder, arris body or conventional bolt, screw etc. cylinder is selected for use to this embodiment, locating part and spout cooperation are injectd the push rod in the mounting hole, spout and locating part still play the effect.
In this embodiment, the head end of the push rod extends from the head end orifice of the mounting hole, and the pressing cap 14 is formed on the end of the push rod, so that the finger can press the push rod conveniently, and the tail end of the push rod is directly embedded into the fixed positioning pin 9.
One side below the sliding chute is provided with a groove, the tail end of the groove is provided with a forming tongue piece 10, the head end of the groove is tilted outwards and is provided with a forming lug 11, a through hole 16 is formed on the corresponding mounting hole wall, the lug and the through hole are matched to position the position of the push rod, the push rod below the groove is sleeved with a return spring 12, during assembly, the push rod can be directly inserted into the mounting hole so as to mount the hole wall and a limit return spring of the push rod body, when the push rod is pressed to move downwards, the return spring is compressed, the lug is popped out from the through hole, at the moment, the positioning pin extends out from; when the push rod is not used, the pressing lug contracts inwards, the push rod resets under the action of the spring, and the push rod is prevented from popping out of the mounting hole under the action of the limiting part.
In this embodiment, the push rod is formed by injection molding.
Preferably, the guide post 15 is formed on the push rod above the tongue piece, a groove is formed on the corresponding hole wall, the guide post moves along the groove to further guide the push rod to longitudinally move, and the convex block on the tongue piece is conveniently and accurately arranged in the through hole.
Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. Hand-pricking-preventing compasses comprise a positioning pin and a positioning needle, and are characterized in that: the positioning pin is provided with an inserting part, the inserting part is provided with an installation hole penetrating through the head and the tail, a push rod, a limiting part and a reset spring are arranged in the installation hole, the head end of the push rod extends out of a hole opening at the head end of the installation hole, the tail end of the push rod is provided with a positioning needle, one side of the push rod positioned in the installation hole is provided with an outward-warped tongue piece, the outer side surface of the tongue piece is provided with a convex block, a through hole is arranged on the corresponding hole wall, the reset spring is arranged between the limiting part and the installation hole wall, the push rod is provided with a sliding groove, and an;
the push rod is pressed to move downwards until the lug on the tongue piece is arranged in the through hole, the return spring is compressed, and meanwhile, the positioning needle extends out of the opening at the tail end of the through hole; the convex block is pressed to be separated from the through hole wall for limitation, and the push rod is reset under the action of the reset spring.
2. The compass of claim 1, wherein: the upper part of the push rod is provided with a sliding chute, and the push rod below the tongue piece is sleeved with a return spring.
3. The compass of claim 2, wherein: the push rod corresponding to the inner side surface of the tongue piece is provided with a groove.
4. The compass of claim 1, wherein: the push rod above the tongue piece is provided with a guide post, the corresponding hole wall is provided with a groove, and the guide post moves along the groove.
5. The compass of claim 1, wherein: the head end of the push rod is provided with a pressing cap.
6. The compass of claim 1, wherein: the insertion part and the positioning pin are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022126094.0U CN213322398U (en) | 2020-09-24 | 2020-09-24 | Anti-pricking compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022126094.0U CN213322398U (en) | 2020-09-24 | 2020-09-24 | Anti-pricking compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213322398U true CN213322398U (en) | 2021-06-01 |
Family
ID=76067014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022126094.0U Active CN213322398U (en) | 2020-09-24 | 2020-09-24 | Anti-pricking compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213322398U (en) |
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2020
- 2020-09-24 CN CN202022126094.0U patent/CN213322398U/en active Active
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