A student compass structure

Abstract

This utility model discloses a compass structure for students, relating to the field of stationery. It includes a first leg with a pen tip mounted on the bottom and a second leg with a compass tip mounted on the bottom. The tops of the first and second legs are movably connected by an adapter, the top of which has a pivot. A groove is formed along the length of the inner side of the second leg. The front end of the compass tip is tapered, and the end of the compass tip is rotatably mounted in the groove via a connecting part. The compass tip can rotate to a first position and a second position under external constraints. This utility model designs the compass tip as a movable structure, that is, rotatably mounted in the groove on the inner side of the second leg via a connecting part. When needed, the compass tip can be extended for drawing; when not needed, it can be retracted into the groove, preventing accidents that could cause injury. Therefore, this compass is safer.

Description

Technical Field

[0001] This utility model relates to the field of stationery technology, and in particular to a compass structure for students. Background Technology

[0002] A compass is a common drawing tool widely used in school art, math, and science courses. Its main functions are drawing circles and measuring distances, helping students better understand geometric concepts during the learning process. However, most compasses on the market still pose some safety hazards, especially for school students.

[0003] Existing compasses typically feature an exposed fixed point design. This design makes the point easily exposed during use, and students may be scratched or punctured by this sharp part if handled improperly or accidentally touched, posing a certain safety risk. In addition, when students carry compasses on their desks, in their bags, or in other environments, the exposed point may also cause accidental injury to other objects or people.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a compass structure for students. This device designs the compass tip as a movable structure, that is, it is rotatably installed in the slot inside the second leg through the connecting part. When needed, the compass tip can be controlled to extend for drawing. When not needed, the compass tip can be controlled to retract into the slot to prevent accidental injury. Therefore, this compass is safer.

[0006] To achieve the above objectives, this utility model provides a compass structure for students, including a first leg with a pen tip mounted on the bottom and a second leg with a compass tip mounted on the bottom. The tops of the first and second legs are movably connected by an adapter, and a rotating shaft is mounted on the top of the adapter. A groove is formed on the inner side of the second leg along its length. The front end of the compass tip has a tapered structure, and the end of the compass tip is rotatably mounted in the groove through a connecting part. The compass tip can rotate to a first position and a second position under external constraints. The first position is the application position where the front end of the compass tip is downward and extends from the bottom of the second leg. The second position is the standby position where the front end of the compass tip is upward and the entire compass tip is completely inserted into the groove. The compass tip can change between the first and second positions under external constraints.

[0007] In one embodiment of this utility model, the connecting part includes an outer sleeve shaft and a core shaft, wherein the end of the compass tip is fixed outside the outer sleeve shaft, and the outer sleeve shaft is rotatably sleeved on the core shaft, so that the compass tip can rotate 180° with the outer sleeve shaft, thereby realizing the change of the compass tip between a first position and a second position.

[0008] In one embodiment of this utility model, a gap is provided between the inner sides of both ends of the outer sleeve shaft and the mandrel. A first protrusion is installed on the outer sleeve shaft at a position within the gap, and a second protrusion is installed at the end of the mandrel at a position within the gap. An elastic band is connected between the second protrusion and the first protrusion. The elastic band can provide the outer sleeve shaft with a traction force to pull the compass tip from the first position to the second position.

[0009] In one embodiment of this utility model, a locking member is also installed on the second leg, which can lock the compass tip when the compass tip is in the first position.

[0010] In one embodiment of this utility model, the locking member adopts a U-shaped structure, with one end being a long end and the other end being a short end. A locking hole is radially formed on the compass tip, and a through groove and a through slot are formed on the second leg. The through groove and the through slot are located on the same plane as the locking hole when the compass tip is in the first position. The long end passes through the through groove, and the short end is inserted into the through slot. The locking member can move radially along the compass tip, allowing the front end of the short end to be inserted into or removed from the locking hole. When the front end of the short end is inserted into the locking hole, the compass tip is locked in the first position. When the front end of the short end is removed from the locking hole, the compass tip is unlocked. At this time, the compass tip can automatically change to the second position under the traction force of the elastic band.

[0011] In one embodiment of this utility model, a cavity is formed inside the second leg in the middle section of the through groove. A baffle is installed on the long end inside the cavity. The baffle is movable in the cavity. A spring is sleeved on the long end inside the cavity. The spring provides elastic force to the baffle, causing the locking member to tend to move towards the lock hole. Based on this, when the compass tip is in the first position, the front end of the short end is inserted into the lock hole under the elastic force of the spring, locking the compass tip. When the drawing is completed and it is necessary to change the compass tip to the second position, the front end of the long end is pressed directly to make the short end move synchronously. When the front end of the short end moves out of the lock hole, the compass tip is unlocked. At this time, the compass tip automatically changes to the second position under the traction force of the elastic band. The operation is convenient and quick.

[0012] In one embodiment of this utility model, a lever is also provided on the outer sleeve shaft. The angle between the lever and the extension line of the compass tip is less than 180°. Furthermore, a rotating groove is provided on the second leg at the position of the outer sleeve shaft, allowing the lever to rotate. Based on this, when it is necessary to rotate the compass tip to the first position, the lever can be rotated first. Through the lever principle, the compass tip will tilt upwards synchronously. Then, the compass tip can be rotated from the inside until the lever passes through the inside of the rotating groove and protrudes. The compass tip can then be rotated by the lever until it reaches the first position and is locked by the locking member. This operation is convenient.

[0013] In one embodiment of this utility model, the inner side of the first leg is provided with a hollow portion that can accommodate the lever.

[0014] Compared with the prior art, the compass structure for students according to this utility model features a movable compass tip, which is rotatably mounted in a slot inside the second leg via a connecting part. When needed, the compass tip can be extended for drawing, and when not needed, it can be retracted into the slot to prevent accidents. Therefore, this compass is safer. Furthermore, the design of the compass tip installation control structure makes it convenient and quick to operate when the compass tip needs to be stored and used. When storing, simply press the long end of the locking member; when using, simply rotate the lever to engage the compass tip and the locking member. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a student compass according to an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of a student compass structure according to an embodiment of the present invention, in which the compass tip is in the second position;

[0017] Figure 3 This is a schematic diagram of the compass tip mounting structure in a student compass structure according to an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the locking component installation structure in a student compass according to an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the locking component structure in a student compass according to an embodiment of the present invention;

[0020] Figure 6 This is a partial sectional view of the connecting part in a student compass structure according to an embodiment of the present invention.

[0021] Reference numerals: 1. First leg; 10. Hollowed-out part; 2. Second leg; 20. Groove; 21. Rotating groove; 22. Through groove; 23. Through groove; 24. Cavity; 3. Adapter; 4. Rotating shaft; 5. Locking part; 50. Short end; 51. Long end; 52. Spring sleeve; 53. Baffle; 6. Compass tip; 60. Locking hole; 7. Pen tip; 8. Connecting part; 80. Outer shaft; 800. Gap; 801. First protrusion; 81. Lever; 82. Mandrel; 820. Second protrusion; 83. Elastic band. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1 -Appendix Figure 6 The specific embodiments of this utility model are described in detail below, but it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0023] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0024] like Figures 1-6 As shown, a student compass structure according to a preferred embodiment of the present invention includes a first leg 1 on which a pen tip 7 is mounted and a second leg 2 on which a compass tip 6 is mounted. The tops of the first leg 1 and the second leg 2 are movably connected by an adapter 3. A rotating shaft 4 is mounted on the top of the adapter 3. A groove 20 is formed on the inner side of the second leg 2 along its length. The front end of the compass tip 6 is tapered. The end of the compass tip 6 is rotatably mounted in the groove 20 through a connecting part 8. The compass tip 6 can rotate to a first position and a second position under external constraints. The first position is the application position where the front end of the compass tip 6 is downward and extends from the bottom of the second leg 2. The second position is the standby position where the front end of the compass tip 6 is upward and the entire compass tip 6 is completely inserted into the groove 20. The compass tip 6 can change between the first position and the second position under external constraints.

[0025] The compass operates in two states. The first state is the usage state, in which the compass tip 6 is in the first position, that is, the front end of the compass tip 6 is downward and extends from the bottom of the second leg 2. At this time, it can be used for drawing normally. That is, the front end of the compass tip 6 is pressed into the predetermined center position, and then the radius of the circle is determined by rotating the first leg 1. Then, the first leg 1 is rotated by the pivot 4 at the top of the adapter 3, and the drawing is done through the pen tip 7. The second state is the storage state, in which the compass tip 6 is completely inserted into the storage groove 20 inside the second leg 2. This can prevent the front end of the compass tip 6 from scratching or pricking people, thus improving the safety of the compass.

[0026] In summary, this device features a movable compass tip 6, which is rotatably mounted in the slot 20 inside the second leg 2 via the connecting part 8. When needed, the compass tip 6 can be extended for drawing, and when not needed, it can be retracted into the slot 20 to prevent accidents that could cause injury. Therefore, this compass is safer.

[0027] Specifically, such as Figures 5-6 As shown, in order to enable the compass tip 6 to change between the first position and the second position, in this embodiment, the connecting part 8 includes an outer sleeve shaft 80 and a core shaft 82. The end of the compass tip 6 is fixed outside the outer sleeve shaft 80, and the outer sleeve shaft 80 is rotatably sleeved on the core shaft 82, so that the compass tip 6 can rotate 180° with the outer sleeve shaft 80, thereby enabling the compass tip 6 to change between the first position and the second position.

[0028] Specifically, such as Figure 6 As shown, in order to further improve the safety and ease of use of the compass, in this embodiment, a gap 800 is provided between the inner sides of both ends of the outer sleeve shaft 80 and the mandrel 82. A first protrusion 801 is installed on the outer sleeve shaft 80 within the gap 800, and a second protrusion 820 is installed at the end of the mandrel 82 within the gap 800. An elastic band 83 is connected between the second protrusion 820 and the first protrusion 801. The elastic band 83 can provide the outer sleeve shaft 80 with a traction force to pull the compass tip 6 from the first position to the second position.

[0029] Specifically, such as Figures 3-5 As shown, in order to ensure that the compass tip 6 can remain stable and not loose when it is in the first position, and to ensure smooth drawing, in this embodiment, a locking member 5 is also installed on the second leg 2. The locking member 5 can lock the compass tip 6 when it is in the first position.

[0030] Specifically, such as Figures 3-5 As shown, in order to facilitate locking and unlocking when the compass tip 6 is in the first position, in this embodiment, the locking member 5 adopts a U-shaped structure. One end of the locking member 5 is a long end 51, and the other end is a short end 50. A locking hole 60 is provided radially on the compass tip 6, and a through groove 22 and a through groove 23 are provided on the second leg 2. The through groove 22 and the through groove 23 are located on the same plane as the locking hole 60 when the compass tip 6 is in the first position. The long end 51 passes through the through groove 22, and the short end 50 is inserted into the through groove 23. The locking member 5 can move radially along the compass tip 6, so that the front end of the short end 50 can be inserted into or removed from the locking hole 60. When the front end of the short end 50 is inserted into the locking hole 60, the compass tip 6 is locked in the first position. When the front end of the short end 50 is removed from the locking hole 60, the compass tip 6 is unlocked. At this time, the compass tip 6 can automatically change to the second position under the traction force of the elastic band 83.

[0031] Specifically, such as Figures 3-5 As shown, to further facilitate locking and unlocking when the compass tip 6 is in the first position, in this embodiment, a cavity 24 is provided inside the second leg 2 in the middle section of the through groove 22. A baffle 53 is installed on the long end 51 inside the cavity 24. The baffle 53 can move within the cavity 24. A spring 52 is sleeved on the long end 51 inside the cavity 24. The spring 52 provides elastic force to the baffle 53, which causes the locking member 5 to tend to move towards the lock hole 60. Based on this, when the compass tip 6 is in the first position, the front end of the short end 50 is inserted into the locking hole 60 under the elastic force of the sleeve spring 52, locking the compass tip 6. When the drawing is completed and it is necessary to change the compass tip 6 to the second position, simply press the front end of the long end 51 to make the short end 50 move synchronously. When the front end of the short end 50 moves out of the locking hole 60, the compass tip 6 is unlocked. At this time, the compass tip 6 automatically changes to the second position under the traction force of the elastic band 83, making the operation convenient and quick.

[0032] Specifically, such as Figures 3-6 As shown, in order to facilitate the control of the compass tip 6 from the second position to the first position, in this embodiment, a lever 81 is also provided on the outer shaft 80. The angle between the lever 81 and the extension line of the compass tip 6 is less than 180°, and a rotating groove 21 is provided on the second leg 2 at the position of the outer shaft 80, which allows the lever 81 to rotate. Based on this, when it is necessary to rotate the compass tip 6 to the first position, the lever 81 can be rotated first. Through the lever principle, the compass tip 6 will tilt upwards simultaneously. Then, the compass tip 6 can be rotated from the inside until the lever 81 passes through the inside of the rotating groove 21 and is exposed. Then, the compass tip 6 can be rotated by the lever 81 until the compass tip 6 reaches the first position and is locked by the locking member 5. The operation is convenient.

[0033] Specifically, such as Figure 1 As shown, when the compass tip 6 is locked in the first position, the front end of the lever 81 extends from the inside of the second leg 2. In order to avoid it blocking the first leg 1 and affecting the drawing, in this embodiment, the inside of the first leg 1 is provided with a hollow part 10 that can accommodate the lever 81.

[0034] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A compass structure for students, comprising a first leg (1) for mounting a pen point (7) and a second leg (2) for mounting a compass point (6), the top of the first leg (1) and the top of the second leg (2) being movably connected by a connector (3), the top of the connector (3) being provided with a rotating shaft (4), characterized in that, The inner side of the second leg (2) is provided with a slot (20) along the length direction. The front end of the compass tip (6) is a conical structure. The end of the compass tip (6) is rotatably installed in the slot (20) through the connecting part (8). The compass tip (6) rotates to a first position and a second position under external constraints. The first position is the application position in which the front end of the compass tip (6) is downward and extends from the bottom of the second leg (2). The second position is the standby position in which the front end of the compass tip (6) is upward and the compass tip (6) is completely inserted into the slot (20). The compass tip (6) can change between the first position and the second position under external constraints.

2. The structure of a student compass according to claim 1, characterized in that, The connecting part (8) includes an outer sleeve shaft (80) and a core shaft (82), wherein the end of the compass tip (6) is fixed outside the outer sleeve shaft (80), and the outer sleeve shaft (80) is rotatably sleeved on the core shaft (82), so that the compass tip (6) can rotate 180° with the outer sleeve shaft (80).

3. The structure of a student compass according to claim 2, characterized in that, A gap (800) is provided between the inner sides of both ends of the outer shaft (80) and the mandrel (82). A first protrusion (801) is installed on the outer shaft (80) within the gap (800). A second protrusion (820) is installed at the end of the mandrel (82) within the gap (800). An elastic band (83) is connected between the second protrusion (820) and the first protrusion (801). The elastic band (83) can provide the outer shaft (80) with a traction force to pull the compass tip (6) from the first position to the second position.

4. The structure of a student compass according to claim 3, characterized in that, The second leg (2) is also equipped with a locking element (5), which can lock the compass tip (6) when the compass tip (6) is in the first position.

5. The structure of a student compass according to claim 4, characterized in that, The locking member (5) adopts a U-shaped structure. One end of the locking member (5) is a long end (51) and the other end is a short end (50). A locking hole (60) is provided radially on the compass tip (6). A through groove (22) and a through groove (23) are provided on the second leg (2). The through groove (22) and the through groove (23) are located on the same plane as the locking hole (60) when the compass tip (6) is in the first position. The long end (51) passes through the through groove (22) and the short end (50) is inserted into the through groove (23). The locking member (5) can move radially along the compass tip (6) so that the front end of the short end (50) can be inserted into or removed from the locking hole (60).

6. The structure of a student compass according to claim 5, characterized in that, The second leg (2) has a cavity (24) in the middle of the through groove (22). A baffle (53) is installed on the long end (51) inside the cavity (24). The baffle (53) can move in the cavity (24). A spring (52) is sleeved on the long end (51) inside the cavity (24). The spring (52) provides elastic force to the baffle (53), which makes the locking member (5) tend to move towards the lock hole (60).

7. The structure of a student compass according to claim 6, characterized in that, The outer shaft (80) is also provided with a lever (81), the angle between the lever (81) and the extension line of the compass tip (6) is less than 180°, and the second leg (2) is provided with a rotating groove (21) at the position of the outer shaft (80) to allow the lever (81) to rotate.

8. The structure of a student compass according to claim 7, characterized in that, The inner side of the first leg (1) is provided with a hollow part (10) that can accommodate the lever (81).

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