Easy-to-assemble direct liquid application tool

Abstract

This invention provides an easy-to-assemble direct-liquid coating tool. The technical problem is to provide a valve-type marker pen or other direct-liquid coating tool that can be easily and quickly assembled from the cylinder to the support component. At the end of the cylinder (1) storing ink, there is a continuous, integral or segmented annular receiving part (5) with an upper edge (7) that is curved and extends outward. When the end of the cylinder (1) is embedded in the support component (2), a plurality of folded-back tabs (6) arranged radially and approximately horizontally inward on the lower end face of the support component (2) are folded back upward along the outer circumferential surface of the receiving part (5), thus being embedded in the lower side of the receiving part (5).

Description

Technical Field

[0001] This utility model relates to an easy-to-assemble direct liquid application tool, that is, an easy-to-assemble direct liquid application tool that stores a sufficient amount of liquid such as ink, cosmetic liquid, or medicine in the cylinder, which can penetrate the pen refill at any time for application (writing). Background Technology

[0002] In recent years, writing instruments such as markers have replaced the traditional wick-based systems, with direct-ink pens becoming the mainstream due to their faster ink penetration and lack of ink bleed. However, in direct-ink pens, there is a risk of excessive ink seeping into the refill, causing ink dripping. Therefore, many writing instruments incorporate valve mechanisms that allow ink to penetrate the refill by pushing it in.

[0003] In conventional writing instruments with valve mechanisms, the ink-storing cylinder is assembled into a support component containing the valve mechanism and the ink refill. This assembly typically involves screwing the end of the cylinder, which has male threads, into the support component, which has female threads. During operation, adhesive is applied to the threaded portion to prevent disintegration, but this increases manufacturing effort and cost. Utility Model Content

[0004] Thus, in the case of conventional writing instruments with valve mechanisms, the method of assembling the shaft to the support component by screwing it in, and then applying adhesive to the threaded portion to prevent disintegration, results in a correspondingly high workload and cost in manufacturing. Therefore, the technical problem of this utility model is to provide an easy-to-assemble direct liquid coating tool that can easily and quickly assemble the shaft to the support component without the workload of conventional methods.

[0005] To solve the aforementioned technical problems, this utility model provides an easily assembled direct-liquid coating tool. It is formed by assembling the end portion of an ink-storing cylinder to a support component that supports a pen tip. The tool is characterized by having a continuous, integral, or segmented annular receiving portion, with its upper edge curved and extending outwards, formed at the end portion of the cylinder embedded in the support component. With the end portion of the cylinder assembled to the support component, multiple folding tabs extending radially and approximately horizontally inwards from the lower end face of the support component are folded back upwards along the outer circumference of the receiving portion, thus embedding themselves under the receiving portion and preventing the cylinder from being pulled out of the support component.

[0006] The aforementioned support component's folding piece can be bent freely from a horizontal state to an upward vertical state.

[0007] As described above, the easy-to-assemble direct-liquid coating tool of this invention, as the shaft is inserted into the support member, the folding piece is folded upward by sliding contact with the outer peripheral surface of the receiving part. As the insertion progresses further, it passes over the receiving part and enters the lower side of the receiving part. It is then slightly expanded by its rebound force and locked onto the receiving part. Because of this structure, there is no need for tightening operations or adhesive application operations. The assembly operation of the shaft into the support member can be easily and quickly performed simply by pushing the shaft into the support member, thereby reducing the amount of manufacturing work and costs. Attached Figure Description

[0008] Figure 1 This is a perspective view of the easy-to-assemble direct liquid coating tool of this utility model with the cap removed.

[0009] Figure 2 This is a longitudinal sectional view of the main parts of the easily assembled direct liquid coating tool of this utility model.

[0010] Figure 3 This is a partially omitted bottom view showing the folded-back piece of the support component of the easily assembled direct liquid coating tool of this utility model.

[0011] Figure 4 This diagram illustrates the assembly process of the easily assembled direct liquid coating tool of this invention. Detailed Implementation

[0012] While referring to the appendix Figure 1 The embodiments of this utility model will be described in detail below. Furthermore, the following description primarily concerns the case where the direct liquid application tool of this utility model is a valve-type writing instrument; however, its structure and function remain essentially unchanged when applied to cosmetic tools, medical instruments, and various other direct liquid application tools besides writing instruments.

[0013] The easily assembled direct-liquid coating tool of this invention is constructed by assembling the end portion of an ink-storing cylinder 1 to a cylindrical support member 2 that holds the pen tip 3. A valve mechanism 4 is installed at the narrowed end portion of the cylinder 1. An outwardly extending annular receiving portion 5 is formed at the end portion of the cylinder 1. The receiving portion 5 has a larger diameter than its lower portion corresponding to the amount of its extension, thus forming a stepped portion below it. Normally, the receiving portion 5 is continuous throughout its entire circumference, but it can also be made into a discontinuous structure divided into multiple parts. Furthermore, the upper edge 7 of the receiving portion 5 is formed as a curved surface (see reference). Figure 4 (A)).

[0014] At the lower end of the support member 2, a plurality of folded-back tabs 6 are provided radially extending in a generally horizontal inward direction (see reference). Figure 3 The folding piece 6 is formed, for example, by thinning the root portion, so that it can be bent freely from a horizontal state to an upward vertical state. As will be described later, as the end portion of the shaft cylinder 1 is inserted into the support member 2, the folding piece 6 slides into contact with the outer peripheral surface of the receiving portion 5 and is folded upward.

[0015] The valve mechanism 4, located within the valve housing 11, comprises a valve stem 12, an elastic component 13 consisting of a coil spring that surrounds the lower half of the valve stem 12 and always applies upward force to the valve stem 12, and a bolt component 14 embedded in the upper opening of the valve housing 11. At the lower end of the valve housing 11, an ink inlet is formed facing the lower end of the valve stem 12, allowing ink to always flow into the valve housing 11 from there. A conical surface 16, forming a valve seat abutment, is formed in the center of the valve stem 12. The elastic component 13 abuts against its back side, ensuring the valve stem 12 is always applied upward force.

[0016] The stopper 14 consists of a cylindrical portion with an opening on its lower surface that fits into the valve housing 11, and a flange formed at the upper end of the cylindrical portion. The portion of the valve stem 12, to the conical surface 16, which is fixed at the end of the pen refill 4, enters the stopper 14 through the opening on its lower surface. Furthermore, the edge of the opening on the lower surface of the stopper 14 serves as a valve seat, receiving the conical surface 16. The flange of the stopper 14 is held between the flange portion formed at the upper end of the valve housing 11 and the stepped portion between the middle and large diameter portions of the support member 2, receiving the ink storage member 15.

[0017] When there is no load, the valve stem 12 is always pushed up by the elastic member 13, and its conical surface 16 abuts against the edge of the lower surface opening of the plug member 14, thereby keeping the lower surface opening continuously closed. Figure 2 (In the state of...) Next, if the pen refill 4 is pushed in by the pushing force of the elastic member 13, and the valve stem 12 is pushed in via the pen refill 4, its conical surface 16 separates from the edge of the opening on the lower surface of the plug member 14. By opening this part, the ink accumulated in the valve housing 11 is introduced to the pen refill 4 side. Thus, the ink storage member 15 is fully immersed in ink, and the ink permeates into the pen refill 4.

[0018] Furthermore, by pointing the pen refill 4 downwards, ink from the cylinder 1 flows into the valve housing 11 through its bottom opening by gravity, filling it completely. The ink that flows into the valve housing 11 accumulates there until the pen refill 4 is pushed into the support member 2 and the valve stem 12 opens. If the pen refill 4 is pushed into the support member 2 and the valve stem 12 opens, the ink flows into the stop member 14, wetting the ink storage member 15. However, the valve mechanism described above is only one example and is not limited to it; other structures are also possible.

[0019] The shaft sleeve 1, with its receiving portion 5 at its end, is assembled by embedding it into the support member 2 in a state where the valve mechanism portion 4 is inserted. The fold-back plate 6 faces inward horizontally before assembly (see reference). Figure 3 However, if the shaft sleeve 1 is inserted during assembly, the inner edge of the folded-back piece 6 abuts against the upper end of the shaft sleeve 1, is pushed up and tilted, and in its original state, slides in contact with the upper circumferential surface of the shaft sleeve 1. Figure 4 (A)). If the shaft sleeve 1 is pushed further in this state, the root of the folding piece 6 will soon come into contact with the upper edge 7 of the curved surface of the receiving part 5, thereby folding the folding piece 6 further back. Figure 4 (B)) slides in contact with the outer peripheral surface of the receiving part 5 and becomes vertical. Figure 4 (C)). When from that Figure 4 The state transition shown in (B) is as follows: Figure 4 In the state shown in (C), the fold-back piece 6 continuously abuts against the upper edge 7, but since the upper edge 7 is a curved surface, the fold-back piece 6 is smoothly folded back without any resistance during this period.

[0020] Next, if pushed further in this state, the folding piece 6 passes over the receiving part 5 and enters the back side of the receiving part 5. Figure 4 (D)). Here, the folding piece 6 continues to press against the upper circumferential surface of the shaft cylinder 1 by means of its restoring force, so that its front end face abuts against the stepped part of the receiving part 5 and is no longer pulled out from there. Therefore, the shaft cylinder 1 can no longer be pulled out from the support member 2.

[0021] Thus, in the case of the direct liquid coating tool of this utility model, since the assembly of the shaft cylinder 1 to the support member 2 can be performed simply by pushing the shaft cylinder 1 in until the folding piece 6 passes the receiving part 5, the assembly operation can be performed simply and quickly, thereby reducing manufacturing costs. Furthermore, as it is assembled, the folding piece 6 is locked in the receiving part 5, and the support member 2 cannot be pulled out from the shaft cylinder 1, so the application of adhesive is no longer required.

[0022] Furthermore, the above description pertains to the application of the direct liquid application tool of this utility model to valve-type writing instruments. However, as mentioned above, when applied to cosmetics, medical devices, and other various direct liquid application tools other than writing instruments, their structure and effects are also the same as those of writing instruments, so detailed descriptions of them are omitted.

[0023] Since the direct liquid coating tool of this utility model has the above-described structure, there is no need for tightening operations and adhesive application operations. The assembly of the shaft cylinder to the support component can be carried out simply and quickly by pushing in, so it can reduce the workload and cost of manufacturing and has great industrial applicability.

[0024] Explanation of reference numerals in the attached figures

[0025] 1. Shaft and tube

[0026] 2 Support components

[0027] 3 pen refills

[0028] 4 Valve Mechanism

[0029] 5. Contracting Department

[0030] 6 Folded-back pieces

[0031] 7. Upper edge

Claims

1. A direct-liquid coating tool that is easy to assemble, comprising assembling the end portion of an ink-storing cylinder to a support component supporting a pen tip, characterized in that, At the end of the aforementioned shaft sleeve embedded in the aforementioned support member, a continuous, integral or segmented annular receiving portion is formed, with the upper edge of which is curved and extends outward. When the end of the aforementioned shaft sleeve is assembled to the aforementioned support member, multiple folding tabs that are radially and approximately horizontally extended inward on the lower end face of the aforementioned support member are folded back upward along the outer circumferential surface of the aforementioned receiving portion, thus becoming embedded in the lower side of the aforementioned receiving portion, thereby forming a structure that prevents the aforementioned shaft sleeve from being pulled out of the aforementioned support member.

2. The easily assembled direct-liquid coating tool as described in claim 1, characterized in that, The aforementioned support component's folding piece can be bent freely from a horizontal state to an upward vertical state.

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