Automatic eraser pen

Abstract

The utility model relates to the technical field of art supplies, in particular to an automatic eraser pen which comprises an automatic refill discharging mechanism, a pen tube and a pen clip, the automatic refill discharging mechanism comprises a shell and a refill feeding unit, the refill feeding unit comprises a clamping ring, a clamp, a spring, a clamping sleeve, a plastic refill and a plastic tube, the shell is integrally formed, and the clamping ring is arranged on the clamping ring. The pen point, the limiting ring, the left core tube, the middle core tube and the right core tube are sequentially arranged from left to right, the entering and exiting of the eraser core, the size of the entering and exiting part and the shape of the eraser core can be controlled through matched use of the shell and the core feeding unit, and the problem that when an ordinary large art eraser is used for wiping, although the eraser can cover a wider area, the eraser core cannot be used easily is solved. The eraser solves the problems that the existing eraser is not suitable for being used in the prior art, but unwanted areas are easy to erase, small lines are not suitable for being erased without affecting surrounding pictures, and processing is not suitable for being used when a highlight or blank effect is needed, and has the advantages of being simple in structure, novel in style and convenient for a user to carry out refined operation when the eraser is used for erasing.

Description

Technical Field

[0001] This utility model relates to the field of art supplies technology, and in particular to an automatic eraser pen. Background Technology

[0002] When sketching, an eraser can not only remove unnecessary lines, but also adjust the contrast of light and dark in the picture. When we feel that a certain color is too dark and we need to add brightness, we can use an eraser to reduce the color to achieve a satisfactory contrast. An eraser also has an adjustment function. When there is a lack of spatial sense, we can use an eraser to blur some lines, creating a contrast and change between the real and the fake of the object, which will immediately make the picture more vivid and full of spatial sense.

[0003] However, while regular large art erasers can cover a wider area, they can easily erase unwanted areas. They are not suitable for erasing fine lines without affecting the surrounding image, and they are not suitable for creating highlights or white space effects.

[0004] Even when using a knife to cut rubber, it's inconvenient to cut it to the right size, which easily leads to waste. Utility Model Content

[0005] To address the aforementioned shortcomings, this invention provides an automatic eraser pen, which solves the problem of high requirements for erasers when fine-grained sketching is needed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An automatic eraser pen includes an automatic lead feeding mechanism, a pen tube, and a pen clip. The automatic lead feeding mechanism includes a housing and a lead feeding unit. The lead feeding unit includes a retaining ring, a clamp, a spring, a sleeve, a plastic core, and a plastic tube. The plastic core is clamped inside the clamp. The spring is sleeved outside the clamp and placed inside the sleeve together with the clamp. The clamp includes a clamp head, a clamp middle section, and a clamp tail. The clamp head includes two clamping claws. The retaining ring is sleeved outside the clamp head. The clamp tail is inserted into one end of the plastic tube, and the other end of the plastic tube is inserted into the pen clip.

[0008] The shell is integrally formed and has a pen tip, a limiting ring, a left core tube, a middle core tube, and a right core tube arranged from left to right. One end of the pen tip is inserted into a metal core tube for the rubber core to enter and exit. The right core tube is stepped and hollow inside. The retainer is disposed inside the right core tube. Two opposing arrow-shaped retaining blocks are provided on the outer circumference of one end of the retainer. The retaining blocks are used in conjunction with the arrow-shaped retaining grooves opened in the right core tube.

[0009] Furthermore, the rubber core is inserted into one end of the plastic core.

[0010] Furthermore, the core tube has two through holes arranged opposite to each other.

[0011] Furthermore, several raised strips are orderly distributed on the outer circumference of the left core tube.

[0012] The beneficial effects of adopting the above technical solution are:

[0013] 1. By setting an automatic lead ejection mechanism, it is convenient to control the appropriate lead ejection position. Pressing the pen clip pushes the eraser out, or you can push the eraser to control the specific lead ejection position.

[0014] 2. By setting different shaped metal core tubes and eraser cores, it can adapt to the needs of more usage environments. Large pieces of eraser can be cut without using a knife. You can directly use the automatic eraser pen to erase the fine lines that need to be erased without affecting the surrounding picture. It is suitable for processing when a highlight or white space effect is needed. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0016] Figure 2 This is a cross-sectional view of an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the shell 11 structure according to an embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the core feeding unit 12 in an embodiment of the present invention.

[0019] Figure Labels

[0020] 1. Automatic lead feeding mechanism; 11. Housing; 111. Pen tip; 1111. Metal lead tube; 112. Limiting ring; 113. Left lead tube; 1131. Protrusion; 114. Lead tube; 1141. Through hole; 115. Right lead tube; 1151. Slot; 12. Lead feeding unit; 121. Snap ring; 122. Fixture; 1221. Fixture head; 12211. Fixture claw; 1222. Fixture middle; 1223. Fixture tail; 123. Spring; 124. Sleeve; 1241. Snap block; 125. Plastic lead; 126. Plastic tube; 2. Pen tube; 3. Pen clip; 4. Eraser core. Detailed Implementation

[0021] 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.

[0022] An automatic eraser pen includes an automatic lead feeding mechanism, a pen tube, and a clip. The automatic lead feeding mechanism includes a housing and a lead feeding unit. The lead feeding unit includes a retaining ring, a clamp, a spring, a sleeve, a plastic core, and a plastic tube. The plastic core is clamped within the clamp. The spring is sleeved outside the clamp and placed inside the sleeve along with the clamp. The clamp includes a clamp head, a clamp middle section, and a clamp tail section. The clamp head includes two clamping claws. The retaining ring is sleeved outside the clamp head. The tail end is inserted into one end of the plastic tube, and the other end of the plastic tube is inserted into the pen clip; the shell is integrally formed and is provided with a pen tip, a limiting ring, a left core tube, a middle core tube and a right core tube from left to right. One end of the pen tip is inserted into a metal core tube for the rubber core to enter and exit. The right core tube is stepped and hollow inside. The ferrule is set inside the right core tube. Two opposing arrow-shaped locking blocks are provided on the outer circumference of one end of the ferrule. The locking blocks are used in conjunction with the arrow-shaped locking groove opened in the right core tube.

[0023] Adopting the above technical solution, according to Figure 2 After assembling all components, when the pen clip 3 is pressed, the plastic tube 126 inserted with it moves into the pen tube 2. The clamp 122, which is inserted with the plastic tube 126, moves along with it. The retaining ring 121, which is fitted onto the clamp head 1221, is restrained by the housing 11. The clamp head 1221 then passes through the retaining ring 121. Utilizing the elasticity of the plastic, the two clamping claws 12211 separate, releasing the clamped plastic core 125, which moves towards the pen tip 111. The inserted rubber core 4 moves along with it and is pushed out of the metal core tube 1111 of the pen tip 111, allowing the user to... Use the eraser core 4 to modify the sketch; after releasing the pressure of pressing the pen clip 3, the spring 123 that abuts against the plastic tube 126 rebounds and pushes the plastic tube 126 in the opposite direction, causing the clamp 122 to retract backward. The clamp claw 12211 of the clamp head 1221 is locked again by the retaining ring 121, clamping the plastic core 125, thereby restricting the position of the eraser core 4 and preventing it from retracting under pressure during erasing. With this structural setting, not only can the entry and exit and the position of the eraser core 4 be automatically controlled, but the size of the eraser core can also be used to finely control the modification of the sketch.

[0024] refer to Figure 2 The plastic core is inserted into the rubber core at one end.

[0025] Using the above technical solution, a rubber core 4 is inserted into one end of the plastic core 125, and the strength of the plastic core is used to better clamp and move the clamp 122.

[0026] refer to Figure 2 and Figure 3 The core tube has two through holes that are arranged opposite to each other.

[0027] By adopting the above technical solution, the air pressure inside the housing 11 is released by setting the through hole 1141, which facilitates the smoother movement of the rubber core 4 inside the housing 11.

[0028] refer to Figure 2 and Figure 3 The outer circumference of the left core tube has several raised strips distributed in an orderly manner.

[0029] By adopting the above technical solution, a number of protrusions 1131 are orderly distributed on the outer circumference of the left core tube 113, which increases the contact between the shell 11 and the pen tube 2 and increases the strength of the fixed connection.

[0030] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] 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 concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic eraser pen, characterized in that: The pen includes an automatic lead feeding mechanism (1), a pen tube (2), and a pen clip (3). The automatic lead feeding mechanism (1) includes a housing (11) and a lead feeding unit (12). The lead feeding unit (12) includes a retaining ring (121), a clamp (122), a spring (123), a sleeve (124), a plastic core (125), and a plastic tube (126). The plastic core (125) is clamped inside the clamp (122). The spring (123) is sleeved outside the clamp (122) and closes to the clamp (126). 2) Placed together inside the card sleeve (124), the clamp (122) includes a clamp head (1221), a clamp middle part (1222) and a clamp tail (1223). The clamp head (1221) includes two clamp claws (12211). The clamp head (1221) is sleeved with the retaining ring (121). The clamp tail (1223) is inserted into one end of the plastic tube (126), and the other end of the plastic tube (126) is inserted into the pen clip (3). The housing (11) is integrally formed and is provided with a pen tip (111), a limiting ring (112), a left core tube (113), a middle core tube (114) and a right core tube (115) from left to right. One end of the pen tip (111) is inserted into a metal core tube (1111) for the rubber core (4) to enter and exit. The right core tube (115) is stepped and hollow inside. The sleeve (124) is disposed inside the right core tube (115). Two opposing arrow-shaped locking blocks (1241) are provided on the outer circumference of one end of the sleeve (124). The locking blocks (1241) are used in conjunction with the arrow-shaped locking groove (1151) opened in the right core tube (115).

2. An automatic eraser pen according to claim 1, characterized in that: The rubber core (4) is inserted into one end of the plastic core (125).

3. An automatic eraser pen according to claim 1, characterized in that: The core tube (114) has two through holes (1141) arranged opposite to each other.

4. An automatic eraser pen according to claim 1, characterized in that: The outer circumference of the left core tube (113) has several raised strips (1131) distributed in an orderly manner.

Images