A pencil with dual lead

Abstract

The utility model discloses a pencil with dual-purpose lead, its characterized in that, including pen holder, pencil lead and rubber core, the pen holder is equipped with cavity along the direction of the central axis, the pencil lead with the rubber core is fixedly arranged in the cavity, the pencil lead with the rubber core is along the direction of the central axis of the pen holder is arranged, and the central axis of pencil lead with the central axis of rubber core coincides. A pencil with dual-purpose lead of the application can be embedded pencil lead and rubber core in a pen holder, so that a pencil realizes writing and erasing function, and the rubber core structure is stable, reduces the security risk, adjusts the setting length ratio of pencil lead and rubber core, and adjusts the diameter of pencil lead and rubber core, satisfies the pen demand of different users, and the coating of pen holder outside wall distinguishes the pencil lead area and rubber core area obviously, not only can remind user pencil lead and rubber core's use progress, but also can distinguish the pencil of different setting length ratio obviously.

Description

Technical Field

[0001] This utility model relates to the field of pencils, and more particularly to a pencil with a dual-purpose lead. Background Technology

[0002] A pencil is a type of pen used for writing, drawing, and sketching. Classified by shape, pencils include those with wooden barrels, those with sharpened tips, and those with caps. A wooden barrel pencil has the lead held in place by a wooden barrel, and this type of pencil needs to be sharpened before use. Additionally, a small eraser is attached to the end of the wooden barrel, so that if a mistake is made, the pencil can be turned over and the eraser can be used to erase the error. This type of pencil is more convenient to use.

[0003] However, the aforementioned pencils have many problems. For example, to ensure the stability of the pencil structure, the eraser at the end is small and has a limited number of uses, meaning the eraser may run out before the pencil is finished. Furthermore, the eraser, being an accessory attached to the pencil barrel, is easily disassembled, and the small parts could be accidentally swallowed by younger users, posing a significant safety hazard.

[0004] As shown in utility model patent publication number CN201272160Y, an eraser pen is proposed, comprising a cylindrical pen body with an eraser pen core located at the center of the pen body. Such an eraser pen can only be used to erase writing marks, and its function is limited. Summary of the Invention

[0005] The purpose of this invention is to create a pencil with a dual-purpose lead, based on the existing pencil and the need to stably house the eraser inside the pencil barrel and increase the number of times the eraser can be used.

[0006] A pencil with a dual-purpose lead, characterized in that it includes a barrel, a pencil lead, and an eraser lead, wherein the barrel has a cavity along its central axis, the pencil lead and the eraser lead are fixedly disposed in the cavity, the pencil lead and the eraser lead are disposed along the central axis of the barrel, and the central axis of the pencil lead coincides with the central axis of the eraser lead.

[0007] Furthermore, the pencil lead includes a writing end and a first connecting end, and the eraser lead includes an erasing end and a second connecting end, with the first connecting end connected to the second connecting end, and the writing end and the erasing end facing away from each other. This tightly connected structure makes the pencil with the dual-purpose lead more compact and stable.

[0008] Furthermore, the pen barrel is composed of a first half and a second half glued together. The first half and the second half are symmetrical about the central axis, and both the first half and the second half are provided with a pencil lead mounting groove and an eraser core mounting groove. The pencil lead mounting grooves on the first half and the second half are joined together to form a cavity for mounting pencil leads, and the eraser core mounting grooves on the first half and the second half are joined together to form a cavity for mounting eraser cores.

[0009] Furthermore, the outer wall of the pen barrel is coated with a coating consisting of two parts located on the pencil lead side and the eraser lead side, respectively. The two parts of the coating are joined together with a clear boundary line at the junction of the pencil lead and the eraser lead. The coating on the outer wall of the pen barrel not only strengthens the connection between the first and second halves of the pen barrel but also clearly distinguishes the pencil lead area from the eraser lead area.

[0010] Different users have different pen-writing habits. Some users make more writing mistakes and therefore need more erasers, so more erasers need to be provided. Other users make fewer writing mistakes and therefore need fewer erasers, so fewer erasers need to be provided. In addition, some users may discard leftover pencils that have lost their writing or erasing functions because they have run out of pencil or eraser leads.

[0011] Based on different users' usage habits, the length ratio of pencil lead and eraser lead has been adjusted to synchronize their consumption rates (synchronized consumption rate means that the percentage of pencil lead and eraser lead consumed during use is close; for example, if 40% of the pencil lead is consumed, then approximately 40% of the eraser lead is also consumed). This ensures that the pencil with dual-purpose lead functions fully during use while reducing pencil waste.

[0012] Furthermore, the length ratio of the pencil lead to the eraser lead is 1:1.

[0013] Optionally, the length ratio of the pencil lead to the eraser lead is 4:1 or 1:4.

[0014] Optionally, the length ratio of the pencil lead to the eraser lead is 7:3 or 3:7.

[0015] Different users have different eraser usage habits. Some users press too hard when erasing pen marks, so they need a stronger eraser and therefore need a larger eraser core diameter. Other users press less hard when erasing pen marks, so they don't need a larger eraser core diameter compared to users who press too hard.

[0016] Furthermore, the diameter of the pencil lead is the same as the diameter of the eraser lead.

[0017] Optionally, the diameter of the eraser core is twice the diameter of the pencil lead.

[0018] Furthermore, the pen barrel has a cross-section with various shapes, including circles, triangles, hexagons, etc.

[0019] The beneficial effects of this utility model are as follows: The pencil with dual-purpose lead disclosed in this application can achieve both writing and erasing functions by embedding a pencil lead and an eraser lead in a single pencil barrel. The embedded eraser lead structure is stable, which greatly reduces the safety risks for young children compared to traditional external erasers. The pencil lead and eraser lead length ratio and diameter can be adjusted according to the user's writing habits to meet the needs of different users. The coating on the outer wall of the pencil barrel clearly distinguishes the pencil lead area and the eraser lead area, which not only reminds the user of the progress of using the pencil lead and eraser lead, but also clearly distinguishes pencils with different pencil lead and eraser lead length ratios.

[0020] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in 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. Figure 1 This is a schematic diagram of the overall structure of a specific example of the triangular shaft of the pencil of this utility model; Figure 2 This is a schematic diagram of the overall structure of a specific example of the round shaft of the pencil of this utility model; Figure 3 This is a schematic diagram of the overall structure of a specific example of the hexagonal shaft of the pencil of this utility model; Figure 4 This is a schematic cross-sectional view of the pencil of this utility model, in which the lengths of the pencil lead and the eraser lead are set in a 1:1 ratio; Figure 5 This is a schematic diagram of the overall structure of the pencil of this utility model, in which the length of the pencil lead and the eraser lead are set at a ratio of 4:1; Figure 6 This is a schematic cross-sectional view of the pencil of this utility model, in which the lengths of the pencil lead and the eraser lead are set at a ratio of 4:1. Figure 7 This is a schematic diagram of the overall structure of the pencil of this utility model, in which the lengths of the pencil lead and the eraser lead are set in a 7:3 ratio; Figure 8 This is a schematic cross-sectional view of the pencil of this utility model, in which the lengths of the pencil lead and the eraser lead are set at a ratio of 7:3. Figure 9 This is a cross-sectional structural diagram of the pencil in this utility model, where the diameters of the pencil lead and the eraser lead are set at a ratio of 1:2. Detailed Implementation

[0022] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] The dual-purpose pencil lead of this utility model will be further described with reference to the accompanying drawings.

[0024] Example 1, such as Figure 1 and Figure 4 As shown, the triangular-bar pencil with dual-purpose lead includes a barrel 104, a pencil lead 103, and an eraser lead 105. The barrel 104 has a triangular cross-section, and a coating is provided on the outer wall of the barrel 104. The coating consists of a pencil part coating 101 and an eraser part coating 102. There is a clear boundary line at the junction of the pencil part coating 101 and the eraser part coating 102. The position of the boundary line corresponds to the position where the pencil lead 103 and the eraser lead 105 meet.

[0025] The pen barrel 104 is composed of a first half and a second half glued together. The first half and the second half are symmetrical about the central axis. Both the first half and the second half are provided with a pencil lead mounting groove and an eraser mounting groove. The pencil lead mounting grooves on the first half and the second half are joined together to form a cavity for mounting pencil leads, and the eraser mounting grooves on the first half and the second half are joined together to form a cavity for mounting eraser leads.

[0026] The cavity for installing pencil lead and the cavity for installing eraser lead are connected. The pencil lead 103 is fixedly embedded in the cavity for installing pencil lead, and the eraser lead 105 is fixedly embedded in the cavity for installing eraser lead.

[0027] The writing end of the pencil lead 103 faces outward, the erasing end of the eraser lead 105 faces outward, and the first connecting end of the pencil lead 103 and the second connecting end of the eraser lead 105 are connected.

[0028] The pencil lead 103 and eraser lead 105 are arranged along the central axis of the pencil barrel 104, such as... Figure 4As shown, the left side is pencil lead 103 and the right side is eraser lead 105. The length ratio of pencil lead 103 to eraser lead 105 is 1:1.

[0029] In particular, Figure 4 The positions of the pencil lead 103 and the eraser lead 105 can be interchanged. After the replacement, the eraser lead 105 is on the left and the pencil lead 103 is on the right. The length ratio of the eraser lead 105 and the pencil lead 103 is 1:1, and the diameters of the pencil lead 103 and the eraser lead 105 are the same.

[0030] Example 2, as Figure 2 and Figure 4 As shown, the round-barreled pencil with a dual-purpose lead includes a barrel 104, a pencil lead 103, and an eraser lead 105. The barrel 104 has a circular cross-section, and a coating is provided on the outer wall of the barrel 104. The coating consists of a pencil part coating 101 and an eraser part coating 102. There is a clear boundary line at the junction of the pencil part coating 101 and the eraser part coating 102. The position of the boundary line corresponds to the position where the pencil lead 103 and the eraser lead 105 meet.

[0031] The pen barrel 104 is composed of a first half and a second half glued together. The first half and the second half are symmetrical about the central axis. Both the first half and the second half are provided with a pencil lead mounting groove and an eraser mounting groove. The pencil lead mounting grooves on the first half and the second half are joined together to form a cavity for mounting pencil leads, and the eraser mounting grooves on the first half and the second half are joined together to form a cavity for mounting eraser leads.

[0032] The cavity for installing pencil lead and the cavity for installing eraser lead are connected. The pencil lead 103 is fixedly embedded in the cavity for installing pencil lead, and the eraser lead 105 is fixedly embedded in the cavity for installing eraser lead.

[0033] The writing end of the pencil lead 103 faces outward, the erasing end of the eraser lead 105 faces outward, and the first connecting end of the pencil lead 103 and the second connecting end of the eraser lead 105 are connected.

[0034] The pencil lead 103 and eraser lead 105 are arranged along the central axis of the pencil barrel 104, such as... Figure 4 As shown, the left side is pencil lead 103 and the right side is eraser lead 105. The length ratio of pencil lead 103 and eraser lead 105 is 1:1, and the diameters of pencil lead 103 and eraser lead 105 are the same.

[0035] In particular, Figure 4 The positions of the pencil lead 103 and the eraser lead 105 can be interchanged. After the replacement, the eraser lead 105 is on the left and the pencil lead 103 is on the right. The length ratio of the eraser lead 105 and the pencil lead 103 is 1:1.

[0036] Example 3, as Figure 3 and Figure 4 As shown, the hexagonal pencil with dual-purpose lead includes a barrel 104, a pencil lead 103, and an eraser lead 105. The barrel 104 has a hexagonal cross-section, and the outer wall of the barrel 104 is provided with a coating, which consists of a pencil part coating 101 and an eraser part coating 102. There is a clear boundary line at the junction of the pencil part coating 101 and the eraser part coating 102, and the position of the boundary line corresponds to the position where the pencil lead 103 and the eraser lead 105 meet.

[0037] The pen barrel 104 is composed of a first half and a second half glued together. The first half and the second half are symmetrical about the central axis. Both the first half and the second half are provided with a pencil lead mounting groove and an eraser mounting groove. The pencil lead mounting grooves on the first half and the second half are joined together to form a cavity for mounting pencil leads, and the eraser mounting grooves on the first half and the second half are joined together to form a cavity for mounting eraser leads.

[0038] The cavity for installing pencil lead and the cavity for installing eraser lead are connected. The pencil lead 103 is fixedly embedded in the cavity for installing pencil lead, and the eraser lead 105 is fixedly embedded in the cavity for installing eraser lead.

[0039] The writing end of the pencil lead 103 faces outward, the erasing end of the eraser lead 105 faces outward, and the first connecting end of the pencil lead 103 and the second connecting end of the eraser lead 105 are connected.

[0040] The pencil lead 103 and eraser lead 105 are arranged along the central axis of the pencil barrel 104, such as... Figure 4 As shown, the left side is pencil lead 103 and the right side is eraser lead 105. The length ratio of pencil lead 103 and eraser lead 105 is 1:1, and the diameters of pencil lead 103 and eraser lead 105 are the same.

[0041] In particular, Figure 4 The positions of the pencil lead 103 and the eraser lead 105 can be interchanged. After the replacement, the eraser lead 105 is on the left and the pencil lead 103 is on the right. The length ratio of the eraser lead 105 and the pencil lead 103 is 1:1.

[0042] Example 4, as Figure 5 and Figure 6 As shown, the round-barreled pencil with a dual-purpose lead includes a barrel 104, a pencil lead 103, and an eraser lead 105. The barrel 104 has a circular cross-section, and a coating is provided on the outer wall of the barrel 104. The coating consists of a pencil part coating 101 and an eraser part coating 102. There is a clear boundary line at the junction of the pencil part coating 101 and the eraser part coating 102. The position of the boundary line corresponds to the position where the pencil lead 103 and the eraser lead 105 meet.

[0043] The pen barrel 104 is composed of a first half and a second half glued together. The first half and the second half are symmetrical about the central axis. Both the first half and the second half are provided with a pencil lead mounting groove and an eraser mounting groove. The pencil lead mounting grooves on the first half and the second half are joined together to form a cavity for mounting pencil leads, and the eraser mounting grooves on the first half and the second half are joined together to form a cavity for mounting eraser leads.

[0044] The cavity for installing pencil lead and the cavity for installing eraser lead are connected. The pencil lead 103 is fixedly embedded in the cavity for installing pencil lead, and the eraser lead 105 is fixedly embedded in the cavity for installing eraser lead.

[0045] The writing end of the pencil lead 103 faces outward, the erasing end of the eraser lead 105 faces outward, and the first connecting end of the pencil lead 103 and the second connecting end of the eraser lead 105 are connected.

[0046] The pencil lead 103 and eraser lead 105 are arranged along the central axis of the pencil barrel 104, such as... Figure 5 As shown, the left side is pencil lead 103 and the right side is eraser lead 105. The length ratio of pencil lead 103 to eraser lead 105 is 4:1, and the diameters of pencil lead 103 and eraser lead 105 are the same.

[0047] In particular, Figure 6 The length ratios of the pencil lead 103 and the eraser lead 105 can be interchanged, so the length ratio of the pencil lead 103 and the eraser lead 105 is 1:4.

[0048] In particular, the pen barrel 104 can be configured in different styles, including triangular barrels, hexagonal barrels, etc.

[0049] Example 5, as Figure 7 and Figure 8 As shown, the round-barreled pencil with a dual-purpose lead includes a barrel 104, a pencil lead 103, and an eraser lead 105. The barrel 104 has a circular cross-section, and a coating is provided on the outer wall of the barrel 104. The coating consists of a pencil part coating 101 and an eraser part coating 102. There is a clear boundary line at the junction of the pencil part coating 101 and the eraser part coating 102. The position of the boundary line corresponds to the position where the pencil lead 103 and the eraser lead 105 meet.

[0050] The pen barrel 104 is composed of a first half and a second half glued together. The first half and the second half are symmetrical about the central axis. Both the first half and the second half are provided with a pencil lead mounting groove and an eraser mounting groove. The pencil lead mounting grooves on the first half and the second half are joined together to form a cavity for mounting pencil leads, and the eraser mounting grooves on the first half and the second half are joined together to form a cavity for mounting eraser leads.

[0051] The cavity for installing pencil lead and the cavity for installing eraser lead are connected. The pencil lead 103 is fixedly embedded in the cavity for installing pencil lead, and the eraser lead 105 is fixedly embedded in the cavity for installing eraser lead.

[0052] The writing end of the pencil lead 103 faces outward, the erasing end of the eraser lead 105 faces outward, and the first connecting end of the pencil lead 103 and the second connecting end of the eraser lead 105 are connected.

[0053] The pencil lead 103 and eraser lead 105 are arranged along the central axis of the pencil barrel 104, such as... Figure 6 As shown, the left side is pencil lead 103 and the right side is eraser lead 105. The length ratio of pencil lead 103 and eraser lead 105 is 7:3, and the diameters of pencil lead 103 and eraser lead 105 are the same.

[0054] In particular, Figure 8 The length ratio of the pencil lead 103 and the eraser lead 105 can be interchanged, so the length ratio of the pencil lead 103 and the eraser lead 105 is 3:7.

[0055] In particular, the pen barrel 104 can be configured in different styles, including triangular barrels, hexagonal barrels, etc.

[0056] Example 6, as Figure 9 As shown, the round-barreled pencil with a dual-purpose lead includes a barrel 104, a pencil lead 103, and an eraser lead 105. The barrel 104 has a circular cross-section, and a coating is provided on the outer wall of the barrel 104. The coating consists of a pencil part coating 101 and an eraser part coating 102. There is a clear boundary line at the junction of the pencil part coating 101 and the eraser part coating 102. The position of the boundary line corresponds to the position where the pencil lead 103 and the eraser lead 105 meet.

[0057] The pen barrel 104 is composed of a first half and a second half glued together. The first half and the second half are symmetrical about the central axis. Both the first half and the second half are provided with a pencil lead mounting groove and an eraser mounting groove. The pencil lead mounting grooves on the first half and the second half are joined together to form a cavity for mounting pencil leads, and the eraser mounting grooves on the first half and the second half are joined together to form a cavity for mounting eraser leads.

[0058] The cavity for installing pencil lead and the cavity for installing eraser lead are connected. The pencil lead 103 is fixedly embedded in the cavity for installing pencil lead, and the eraser lead 105 is fixedly embedded in the cavity for installing eraser lead.

[0059] The writing end of the pencil lead 103 faces outward, the erasing end of the eraser lead 105 faces outward, and the first connecting end of the pencil lead 103 and the second connecting end of the eraser lead 105 are connected.

[0060] The pencil lead 103 and eraser lead 105 are arranged along the central axis of the pencil barrel 104, such as... Figure 6 As shown, the left side is pencil lead 103 and the right side is eraser lead 105. The length ratio of pencil lead 103 and eraser lead 105 is 1:1, and the diameter ratio of pencil lead 103 and eraser lead 105 is 1:2.

[0061] In particular, the length ratio of the pencil lead 103 and the eraser lead 105 is variable.

[0062] In particular, the pen barrel 104 can be configured in different styles, including triangular barrels, hexagonal barrels, etc.

[0063] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pencil with a dual-purpose lead, characterized in that, The pen includes a barrel, a pencil lead, and an eraser. The barrel has a cavity along its central axis. The pencil lead and the eraser are fixedly disposed in the cavity. The pencil lead and the eraser are disposed along the central axis of the barrel, and the central axis of the pencil lead coincides with the central axis of the eraser.

2. A pencil with a dual-purpose lead according to claim 1, characterized in that, The pencil lead includes a writing end and a first connecting end, and the eraser lead includes an erasing end and a second connecting end. The first connecting end is connected to the second connecting end, and the writing end and the erasing end are opposite to each other.

3. A pencil with a dual-purpose lead according to claim 1, characterized in that, The pen barrel is composed of a first half and a second half glued together. The first half and the second half are symmetrical about the central axis, and both the first half and the second half are provided with a pencil lead mounting groove and an eraser mounting groove. The pencil lead mounting grooves on the first half and the second half are joined together to form a cavity for mounting pencil lead, and the eraser mounting grooves on the first half and the second half are joined together to form a cavity for mounting eraser.

4. A pencil with a dual-purpose lead according to claim 3, characterized in that, The outer wall of the pen barrel is provided with a coating. The coating is divided into two parts and located on the pencil lead side and the eraser lead side respectively. The two parts of the coating are connected and there is a clear boundary line at the junction of the pencil lead and the eraser lead.

5. A pencil with a dual-purpose lead according to claim 1, characterized in that, The length ratio of the pencil lead to the eraser lead is 1:

1.

6. A pencil with a dual-purpose lead according to claim 1, characterized in that, The length ratio of the pencil lead to the eraser lead is 4:1 or 1:

4.

7. A pencil with a dual-purpose lead according to claim 1, characterized in that, The length ratio of the pencil lead to the eraser lead is 7:3 or 3:

7.

8. A pencil with a dual-purpose lead according to claim 1, characterized in that, The diameter of the pencil lead is the same as the diameter of the eraser lead.

9. A pencil with a dual-purpose lead according to claim 1, characterized in that, The diameter of the eraser core is twice the diameter of the pencil core.

10. A pencil with a dual-purpose lead according to claim 1, characterized in that, The pen barrel has a cross-section with various shapes, including circles, triangles, and hexagons.

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