Safe zero-metal compasses with ceramic needle capable of automatically rebounding

Abstract

The utility model belongs to the technical field of stationery, and discloses a safe zero-metal compass with an automatic ceramic needle rebounding function, which comprises a compass head, a needle leg upper cover arranged on the compass head, a needle leg lower cover clamped on the needle leg upper cover, a pencil lead leg arranged on the compass head, and plastic nuts clamped in the needle leg upper cover, the needle leg lower cover and the pencil lead leg. An inner cavity of the plastic nut is in threaded connection with a plastic knob; a plastic spring is arranged between the needle leg upper cover and the needle leg lower cover, a needle clamping sleeve is buckled on the plastic spring, a compass needle is arranged in the needle clamping sleeve, the compass needle is made of ceramic, a plastic knob and a plastic nut are made of plastic, the plastic knob adopts a bionic hand design, and a center gasket is arranged between the needle leg lower cover and the pencil lead leg. The center gasket is movably sleeved with the outer surface of the plastic nut, and a lead clamping sleeve is arranged at the end, away from the compasses head, of the lead core leg. The opening and closing force between the two compasses legs can be adjusted, tools are not needed, and the compasses needle can be folded so as to prevent people from being hurt.

Description

Technical Field

[0001] This utility model relates to the field of stationery technology, and in particular to a safe, zero-metal compass with an automatically spring-back ceramic needle. Background Technology

[0002] A compass is used to measure parameters such as the length, diameter, and radius of a circle or arc. It mainly consists of two legs and a measuring rod that connects to the legs. The legs can be adjusted as needed, and the measuring rod is used to measure length.

[0003] The following problems exist when using compasses currently on the market:

[0004] 1) The two legs of the compass are connected by metal screws and need to be tightened with a screwdriver. If the compass is loose or tight occasionally and there is no screwdriver available, it will affect its use.

[0005] 2) Because compass needles are made of metal, the tips are quite sharp and can easily prick your hand. Therefore, there are protective sleeves for compass needles on the market. However, these sleeves are either on the outside or attached to the tip of the needle, and they are easy to lose. Once lost, there is still a safety hazard such as the needle tip pricking your hand.

[0006] 3) Since the compass needle is metal and magnetic, some important examination venues, such as the National College Entrance Examination, strictly prohibit products with metal magnetism. The metal compass needle may be detected by security and not allowed to be brought, which will affect the examination. Therefore, we have proposed a safe zero-metal compass with an automatic return ceramic needle. Utility Model Content

[0007] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0008] Specifically, the technical problem to be solved by this utility model is to provide a safe, zero-metal compass with an automatically spring-back ceramic needle, in order to solve the above-mentioned technical problem.

[0009] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0010] A safe zero-metal compass with an automatically spring-back ceramic needle includes a compass head, a needle leg upper cover on the compass head, a needle leg lower cover on the needle leg upper cover, a lead core leg on the compass head, and a plastic nut inside the needle leg upper cover, the needle leg lower cover and the lead core leg. A plastic knob is threaded into the inner cavity of the plastic nut.

[0011] A plastic spring is provided between the upper cover and the lower cover of the needle leg. A needle clamping sleeve is snapped onto the plastic spring. A compass needle is provided inside the needle clamping sleeve. The compass needle is made of ceramic.

[0012] As an improved technical solution, the plastic knob and plastic nut are made of plastic, and the plastic knob adopts a bionic hand design.

[0013] As an improved technical solution, a central washer is provided between the lower cover of the needle leg and the lead core leg, and the central washer is movably sleeved with the outer surface of the plastic nut.

[0014] As an improved technical solution, a lead clamp sleeve is provided at the end of the lead core leg away from the compass head, and a lead core is provided inside the lead clamp sleeve.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are:

[0016] 1. This utility model greatly facilitates consumer use by setting an ergonomic compass knob and using a plastic threaded connection.

[0017] 2. This utility model, through its hidden needle tip protection design within the compass sleeve, maximizes the protection of consumers from secondary needle tip injuries.

[0018] 3. This utility model uses a ceramic design for the compass needle to ensure that it is not affected by the user's use in special examination situations. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0020] Figure 1 This is a schematic diagram of the overall structure of the safety zero-metal compass with an automatically springing ceramic needle according to this utility model.

[0021] Figure 2 This is an exploded view of the overall structure of the safety zero-metal compass with an automatically springing ceramic needle, according to this utility model.

[0022] Figure 3 This is a schematic diagram showing the separation of the plastic knob and plastic nut in the overall structure of the safety zero-metal compass with automatic ceramic needle return of this utility model.

[0023] Figure 4This is a cross-sectional schematic diagram of the overall structure of the safety zero-metal compass with an automatic return ceramic needle of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] In the diagram: 1. Compass head; 2. Upper cover of needle leg; 3. Lower cover of needle leg; 4. Lead core leg; 5. Plastic knob; 6. Plastic nut; 7. Center washer; 8. Plastic spring; 9. Needle clip sleeve; 10. Compass needle; 11. Lead clip sleeve; 12. Lead core. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0028] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0029] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0030] Reference Figures 1-4 A safe zero-metal compass with an automatically retractable ceramic needle is provided. This safe zero-metal compass with an automatically retractable ceramic needle includes a compass head 1, a needle leg upper cover 2 on the compass head 1, a needle leg lower cover 3 on the needle leg upper cover 2, a lead core leg 4 on the compass head 1, and a plastic nut 6 inside the needle leg upper cover 2, the needle leg lower cover 3 and the lead core leg 4. A plastic knob 5 is threaded into the inner cavity of the plastic nut 6.

[0031] A plastic spring 8 is provided between the upper cover 2 and the lower cover 3 of the needle leg. A needle clip sleeve 9 is attached to the plastic spring 8. A compass needle 10 is provided inside the needle clip sleeve 9. In application, the plastic spring 8, the needle clip sleeve 9 and the compass needle 10 are placed between the upper cover 2 and the lower cover 3 of the needle leg. Through the special material of the plastic spring 8, the compass needle 10 is exposed when in use and hidden inside the leg when closed, thereby effectively protecting the safety of consumers.

[0032] The compass needle 10 is made of ceramic. By changing the material of the compass needle 10 to ceramic, we can ensure that consumers' use in special examination situations is not affected.

[0033] Reference Figure 3 and Figure 4 The plastic knob 5 and plastic nut 6 are made of plastic, and the plastic knob 5 adopts a bionic hand design. In application, the plastic knob 5 and plastic nut 6 are made of plastic, and the knob shape is designed to be easy to operate manually, replacing the screwdriver. This makes it convenient for consumers to adjust the opening and closing force between the two compass legs according to their usage habits.

[0034] Reference Figure 1 , Figure 2 as well as Figure 4 A central washer 7 is provided between the lower cover 3 of the needle leg and the lead core leg 4, and the central washer 7 is movably connected to the outer surface of the plastic nut 6.

[0035] Reference Figure 1 and Figure 2 The lead core leg 4 is provided with a lead clamp sleeve 11 at the end away from the compass head 1, and a lead core 12 is provided inside the lead clamp sleeve 11.

[0036] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A safety compass with an automatically spring-back ceramic needle, characterized in that: Includes a compass head (1), the compass head (1) is provided with a needle leg upper cover (2), the needle leg upper cover (2) is provided with a needle leg lower cover (3), the compass head (1) is provided with a lead core leg (4), the needle leg upper cover (2), the needle leg lower cover (3) and the lead core leg (4) are provided with a plastic nut (6), and the inner cavity of the plastic nut (6) is threaded with a plastic knob (5); A plastic spring (8) is provided between the upper cover (2) of the needle leg and the lower cover (3) of the needle leg. A needle clip sleeve (9) is snapped onto the plastic spring (8). A compass needle (10) is provided inside the needle clip sleeve (9). The compass needle (10) is made of ceramic.

2. The compass with automatic return of ceramic needle and safety zero-metal compass according to claim 1, characterized in that: The plastic knob (5) and plastic nut (6) are made of plastic, and the plastic knob (5) adopts a bionic hand design.

3. The compass with automatic return of ceramic needle and safety zero-metal compass according to claim 1, characterized in that: A central washer (7) is provided between the lower cover of the needle leg (3) and the lead core leg (4), and the central washer (7) is movably sleeved with the outer surface of the plastic nut (6).

4. The compass with automatic return of ceramic needle and safety zero-metal compass according to claim 1, characterized in that: The lead core leg (4) is provided with a lead clamp sleeve (11) at one end away from the compass head (1), and a lead core (12) is provided inside the lead clamp sleeve (11).

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