CN211138817U - Drawing compasses with compasses point protection architecture - Google Patents
Drawing compasses with compasses point protection architecture Download PDFInfo
- Publication number
- CN211138817U CN211138817U CN201922244760.8U CN201922244760U CN211138817U CN 211138817 U CN211138817 U CN 211138817U CN 201922244760 U CN201922244760 U CN 201922244760U CN 211138817 U CN211138817 U CN 211138817U
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- steel needle
- outer cover
- locking
- compasses
- arc
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Abstract
The utility model discloses a drawing compasses with compasses point protection architecture, including compasses head, pen socket landing leg and steel needle landing leg, the top of pen socket landing leg and steel needle landing leg is installed at the compasses head through the bolt that runs through respectively, and pen socket landing leg and steel needle landing leg use the bolt as the centre of a circle rotation respectively, and the lateral wall of pen socket landing leg sets up the pen socket, runs through the handwriting in the pen socket, and the footpath of pen socket upwards meshes to have the screw rod that extends to the pen socket centre of a circle. This drawing compasses with compasses point protection architecture, when needing the steel needle to expose, it is rotatory that rotatory knob drives the gear, the rack downstream, the steel needle moves to the outside along the pinhole, the spring takes place the compression behind the bottom that the steel needle stretches out the arc, when needing to lock the steel needle, insert the locking hole to locating hole direction slip locking piece, then gear fixed rack position is also fixed, accomplish the drawing circle with the steel needle, after finishing using, utilize the resilience force of spring, drive rack rebound, the steel needle moves to retracting inside along the pinhole, accomplish the protection.
Description
Technical Field
The utility model relates to a drawing tool technical field specifically is a drawing compasses with compasses point protection architecture.
Background
Compasses are used for drawing or stringing in mathematics and drawing, and are commonly used for drawing with rulers and compasses. Existing compasses generally comprise a compass head and two legs connected to the compass head. One leg is a steel needle point, and the other leg is a drawing pen point. When the drawing pen is used, the two supporting legs are separated to the required radius, one end of the steel needle point is a fixed circle center, the head of the compass is pinched, and the drawing pen point is rotated to draw the required circle or arc. However, the steel needle point is a sharp object and is easy to scratch and stab, and particularly, the compasses used by pupils need to be paid attention to safety, the steel needle point of the compasses on the market generally does not have a rebound device, and the steel needle point is always exposed outside.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a drawing compasses with compasses point protection architecture has and utilizes telescopic machanism extension or the advantage of the completion protection compasses point that contracts of contracting, has solved the problem among the prior art.
In order to achieve the above object, the utility model provides a following technical scheme: a drawing compass with a compass tip protection structure comprises a compass head, a pen cap supporting leg and a steel needle supporting leg, wherein the top ends of the pen cap supporting leg and the steel needle supporting leg are respectively installed on the compass head through a penetrating bolt;
the bottom of the steel needle supporting leg is fixed with one end of the arc-shaped plate along the axis, the arc-shaped plate is fixed with the outer cover through bolts with two ends meshed, the arc-shaped plate and the outer cover are connected and internally formed into a guide hole, the bottoms of the arc-shaped plate and the outer cover are provided with needle holes communicated with the guide hole, and the outer cover penetrates through the rotating shaft along the radial direction;
a sliding telescopic mechanism is arranged in the guide hole and comprises a front circular plate, a rear circular plate, an arc plate, a steel needle, a spring and a rack, the front end and the rear end of the arc plate are fixedly fixed with the front circular plate and the rear circular plate respectively, the rack is tiled on the arc plate, a locking column is fixed in the inner diameter direction of the guide hole beside the rack, the steel needle penetrating through a needle hole is fixed on the side surface of the front circular plate, one end of the steel needle is connected with the front circular plate, and the other end of the steel needle is sleeved with the spring connected with the arc plate and the outer cover;
a positioning hole is processed at the circle center of the locking column, and locking holes are symmetrically processed on the locking columns at the two sides of the positioning hole;
the rotary shaft is positioned on a port outside the outer cover and is fixed with a knob, the port of the rotary shaft positioned in the guide hole is inserted into the positioning hole, the outer wall of the rotary shaft is sequentially provided with a limiting ring, a gear and a locking ring, the gear is meshed with the rack, and the locking ring is radially fixed with a locking block which is complementary with the locking hole.
Preferably, the rotating shaft slides along a radial direction of the outer cover, the locking block is inserted into the locking hole in a sliding manner towards the positioning hole, and the rotating shaft is disengaged from the locking hole in a sliding manner towards the outer part of the outer cover.
Preferably, the position of the steel needle penetrating through the arc plate and the outer cover is located beside the circle center of the joint of the arc plate and the outer cover.
Preferably, the diameters of the front circular plate and the rear circular plate are matched with the inner diameter of the positioning hole.
Preferably, the outer diameter of the limiting ring is larger than the bore diameter of the rotating shaft penetrating through the outer cover.
Compared with the prior art, the beneficial effects of the utility model are as follows:
this drawing compasses with compasses point protection architecture, when needing the steel needle to expose, the rotation axis lets the locking piece break away from the locking hole, it is rotatory that rotatory knob drives the gear, the rack downstream, the steel needle moves to the outside along the pinhole, the spring takes place the compression behind the bottom that the steel needle stretches out the arc, when needing to lock the steel needle, the rotation axis slides along the radial direction of enclosing cover, insert the locking hole to locating hole direction sliding locking piece, then gear fixed rack position is also fixed, accomplish the drawing circle with the steel needle, after using, the outside direction sliding locking piece of rotatory axial enclosing cover breaks away from the locking hole, utilize the resilience force of spring, drive rack rebound, the steel needle moves to retracting to inside along the pinhole, accomplish the protection.
Drawings
FIG. 1 is an overall structure diagram of the present invention;
FIG. 2 is an internal cross-sectional view of the steel needle leg of the present invention;
FIG. 3 is a structural view of the telescopic mechanism of the present invention;
FIG. 4 is a view of the lock pin structure of the present invention;
FIG. 5 is a view showing the structure of the rotary shaft and the gear of the present invention;
fig. 6 is a locking state diagram of the present invention;
fig. 7 is an unlocking state diagram of the present invention;
FIG. 8 is a drawing showing the state of the needle extended from the present invention;
fig. 9 is a drawing showing the contraction state of the steel needle of the present invention.
In the figure: 1. a compass head; 2. a pen cap supporting leg; 21. a pen cap; 211. a pen body; 212. a screw; 3. a steel needle supporting leg; 31. an arc-shaped plate; 4. an outer cover; 41. a rotating shaft; 411. a knob; 412. a limiting ring; 413. a gear; 414. a locking ring; 5. a guide hole; 6. a pinhole; 7. a telescoping mechanism; 71. a front circular plate; 72. a rear circular plate; 73. an arc plate; 74. a steel needle; 75. a spring; 76. a rack; 8. a locking post; 81. positioning holes; 82. a locking hole; 9. and locking the block.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, a drawing compass with a compass tip protection structure includes a compass head 1, a pen cap leg 2 and a stylus leg 3, the top ends of the pen cap leg 2 and the stylus leg 3 are respectively mounted on the compass head 1 through a penetrating bolt, the pen cap leg 2 and the stylus leg 3 respectively rotate around the bolt as a circle center, the pen cap leg 2 and the stylus leg 3 determine a radius of a circle according to a separation angle, a pen cap 21 is disposed on a side wall of the pen cap leg 2, a pen body 211 penetrates through the pen cap 21, a screw 212 extending to the circle center of the pen cap 21 is radially engaged with the pen cap 21, a port of the screw 212 abuts against the pen body 211, and the pen body 211 is mounted and dismounted by the screw 212.
Referring to fig. 2, the bottom of the steel needle leg 3 is fixed to one end of the arc plate 31 along an axis, the steel needle leg 3 and the arc plate 31 are connected to form a whole, the arc plate 31 extends along an extension line direction of the steel needle leg 3, the arc plate 31 is fixed to the outer cover 4 through bolts with two ends engaged with each other, the outer cover 4 and the arc plate 31 are connected together by using the bolts, the installation and the disassembly are convenient, the arc plate 31 and the outer cover 4 are connected to form the guide hole 5, the bottom of the arc plate 31 and the bottom of the outer cover 4 are provided with the needle hole 6 communicated with the guide hole 5, the outer cover 4 penetrates through the rotating shaft 41 along a radial direction, and the rotating shaft 41 can rotate on the outer cover 4 and slide back.
Referring to fig. 3, a sliding telescopic mechanism 7 is installed in the guide hole 5, the telescopic mechanism 7 includes a front circular plate 71, a rear circular plate 72, an arc plate 73, a steel needle 74, a spring 75 and a rack 76, the front and rear ends of the arc plate 73 are fixed to the front circular plate 71 and the rear circular plate 72 respectively, the diameters of the front circular plate 71 and the rear circular plate 72 are matched with the inner diameter of the positioning hole 81, so that the whole telescopic mechanism 7 does not deviate during sliding, the rack 76 is tiled on the arc plate 73, a locking post 8 is fixed to the guide hole 5 beside the rack 76 along the inner diameter direction, the locking post 8 is aligned with the rotating shaft 41, the steel needle 74 penetrating through the pinhole 6 is fixed to the side surface of the front circular plate 71, the position of the steel needle 74 penetrating through the arc plate 31 and the outer cover 4 is located beside the center of the arc plate 31 and the outer cover 4, the steel needle 74 is arranged so that the telescopic mechanism 7 cannot rotate and can slide up and down, only one end of the steel, and a spring 75 with the other end connected with the arc plate 31 and the outer cover 4, wherein the spring 75 compresses after the steel needle 74 extends out of the bottom of the arc plate 31, and generates elastic force of resilience.
Referring to fig. 4, a positioning hole 81 is formed at the center of the locking post 8, and locking holes 82 are symmetrically formed in the locking posts 8 at two sides of the positioning hole 81.
Referring to fig. 5, a knob 411 is fixed on a port of a rotating shaft 41 located outside an outer cover 4, the diameter of the knob 411 is larger, which is convenient for a user to rotate, the outer diameter of a limiting ring 412 is larger than the diameter of the rotating shaft 41 penetrating through the outer cover 4, when the limiting ring 412 is pulled out of the rotating shaft 41, the purpose of preventing the rotating shaft from being pulled out can be achieved, the port of the rotating shaft 41 located in a guide hole 5 is inserted into a positioning hole 81, the direction of radial pulling of the rotating shaft 41 is determined by using the positioning hole 81 and the outer cover 4, the limiting ring 412, a gear 413 and a locking ring 414 are sequentially installed on the outer wall of the limiting ring 412, the gear 413 is meshed with a rack 76, the rack 76 is driven to move up and down by using the rotation of the gear 413, the steel needle 74 is extended or retracted, a locking block 9.
Referring to fig. 6-9, when the steel needle 74 is required to be exposed, the rotating shaft 41 slides the locking block 9 to the outside of the outer cover 4 to disengage from the locking hole 82, the rotating knob 411 drives the gear 413 to rotate, the rack 76 moves downward, the steel needle 74 moves to the outside along the needle hole 6, the spring 75 is compressed after the steel needle 74 extends out of the bottom of the arc plate 31, when the steel needle 74 is required to be locked, the rotating shaft 41 slides along the radial direction of the outer cover 4, the locking block 9 slides to the positioning hole 81 to insert into the locking hole 82, the position of the rack 76 fixed by the gear 413 is also fixed, the steel needle 74 is used to complete circle drawing, after use, the rotating shaft 41 slides the locking block 9 to the outside of the outer cover 4 to disengage from the locking hole 82, the rack 76 is driven to move upward by the resilience force of the spring 75, and the steel needle 74 moves to retract to.
In summary, the following steps: the drawing compass with the compass tip protection structure needs the steel needle 74 to be exposed, the rotating shaft 41 enables the locking block 9 to be separated from the locking hole 82, the rotating knob 411 drives the gear 413 to rotate, the rack 76 moves downwards, the steel needle 74 moves to the outside along the pinhole 6, the spring 75 is compressed after the steel needle 74 extends out of the bottom of the arc-shaped plate 31, when the steel needle 74 needs to be locked, the rotating shaft 41 slides along the radial direction of the outer cover 4, the sliding locking block 9 is inserted into the locking hole 82 towards the direction of the positioning hole 81, the position of the rack 76 is fixed by the gear 413, the steel needle 74 is used for completing circle drawing, after the drawing compass is used, the rotating shaft 41 slides towards the outside direction of the outer cover 4, the sliding locking block 9 is separated from the locking hole 82, the rack 76 is driven to move upwards by the resilience force of the spring 75, and the steel needle 74 moves to.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The drawing compasses with a compass tip protection structure comprise a compass head (1), pen cap supporting legs (2) and steel needle supporting legs (3), wherein the top ends of the pen cap supporting legs (2) and the steel needle supporting legs (3) are respectively installed on the compass head (1) through penetrating bolts, the pen cap supporting legs (2) and the steel needle supporting legs (3) respectively rotate by taking the bolts as circle centers, the side walls of the pen cap supporting legs (2) are provided with pen caps (21), pen bodies (211) penetrate through the pen caps (21), screw rods (212) extending to the circle centers of the pen caps (21) are meshed in the radial direction of the pen caps (21), and ports of the screw rods (212) abut against the pen bodies (211);
the bottom of the steel needle supporting leg (3) is fixed with one end of an arc-shaped plate (31) along an axis, the arc-shaped plate (31) is fixed with an outer cover (4) through bolts with two ends meshed, the arc-shaped plate (31) and the outer cover (4) are connected and internally formed into a guide hole (5), needle holes (6) communicated with the guide hole (5) are formed in the bottom of the arc-shaped plate (31) and the bottom of the outer cover (4), and the outer cover (4) penetrates through a rotating shaft (41) along the radial direction;
a sliding telescopic mechanism (7) is installed in the guide hole (5), the telescopic mechanism (7) comprises a front circular plate (71), a rear circular plate (72), an arc plate (73), a steel needle (74), a spring (75) and a rack (76), the front end and the rear end of the arc plate (73) are fixedly connected with the front circular plate (71) and the rear circular plate (72) respectively, the rack (76) is tiled on the arc plate (73), a locking column (8) is fixedly arranged on the guide hole (5) beside the rack (76) along the inner diameter direction, the steel needle (74) penetrating through a needle hole (6) is fixedly arranged on the side surface of the front circular plate (71), one end of the steel needle (74) is sleeved with the spring (75) connected with the front circular plate (71), and the other end of the steel needle is connected with the arc plate (31) and the outer cover (;
a positioning hole (81) is machined in the circle center of the locking column (8), and locking holes (82) are symmetrically machined in the locking columns (8) on the two sides of the positioning hole (81);
the rotary shaft (41) is positioned on a port outside the outer cover (4) to fix the knob (411), the rotary shaft (41) is positioned in a port inserting positioning hole (81) of the guide hole (5), a limiting ring (412), a gear (413) and a locking ring (414) are sequentially arranged on the outer wall of the rotary shaft, the gear (413) is meshed with the rack (76), and the locking ring (414) is radially fixed with a locking block (9) which is complementary with the locking hole (82).
2. The pair of drawing compasses with compass tip protection structure according to claim 1, wherein said rotary shaft (41) slides along the radial direction of the outer cover (4), the locking block (9) is inserted into the locking hole (82) in the direction of the positioning hole (81), and the locking block (9) is disengaged from the locking hole (82) in the direction of the outer portion of the outer cover (4) by the rotary shaft (41).
3. The drawing compass with a compass tip protection structure, according to claim 1, wherein the position of the steel needle (74) penetrating through the arc plate (31) and the outer cover (4) is located beside the center of the circle at the joint of the arc plate (31) and the outer cover (4).
4. The drawing compass with a compass tip protection structure, according to claim 1, wherein the diameters of the front circular plate (71) and the rear circular plate (72) are matched with the inner diameter of the positioning hole (81).
5. Drawing compasses with compass tip protection according to claim 1, characterized in that the outer diameter of the stop collar (412) is greater than the bore diameter of the rotary shaft (41) through the outer cover (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922244760.8U CN211138817U (en) | 2019-12-13 | 2019-12-13 | Drawing compasses with compasses point protection architecture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922244760.8U CN211138817U (en) | 2019-12-13 | 2019-12-13 | Drawing compasses with compasses point protection architecture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211138817U true CN211138817U (en) | 2020-07-31 |
Family
ID=71746553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922244760.8U Expired - Fee Related CN211138817U (en) | 2019-12-13 | 2019-12-13 | Drawing compasses with compasses point protection architecture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211138817U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111890823A (en) * | 2020-08-14 | 2020-11-06 | 彭泽宸 | Angle-stable fine-adjustment type compasses |
| CN113829783A (en) * | 2021-11-15 | 2021-12-24 | 常州纺织服装职业技术学院 | Automatic change mechanical drawing instrument |
| CN115352209A (en) * | 2022-09-19 | 2022-11-18 | 徐小兰 | Multipurpose compasses with stab-resistant structure |
-
2019
- 2019-12-13 CN CN201922244760.8U patent/CN211138817U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111890823A (en) * | 2020-08-14 | 2020-11-06 | 彭泽宸 | Angle-stable fine-adjustment type compasses |
| CN113829783A (en) * | 2021-11-15 | 2021-12-24 | 常州纺织服装职业技术学院 | Automatic change mechanical drawing instrument |
| CN115352209A (en) * | 2022-09-19 | 2022-11-18 | 徐小兰 | Multipurpose compasses with stab-resistant structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200731 Termination date: 20211213 |