Water color pen with pen point convenient to replace

Abstract

The water color pen comprises a pen holder and a pen cap, the pen cap is arranged at the top of the pen holder, an ink bag is arranged in the pen holder, a mounting hole is formed in the bottom of the pen holder, a first sliding groove is formed in the inner wall of the mounting hole, a first arc-shaped groove is formed in the middle of the bottom of the first sliding groove, and a second arc-shaped groove is formed in the middle of the bottom of the first sliding groove. When the pen point is worn after being used for a long time or a new type of pen point needs to be replaced, a user only needs to press the pressing head of the pressing mechanism, push the movable head to press the ball, enable the ball to contract towards the interior of the conical hole to be separated from the limiting hole, and rotate the chuck until the sliding block is located in the first sliding groove; when the water color pen is used, the clamping head is pulled downwards to be separated from the mounting hole of the pen holder, a tool can easily push the pen point out of the inserting hole from the top of the clamping head, the clamping head is installed on the pen holder after a new pen point is replaced, complete replacement is not needed, cost is saved, the pen point is convenient and rapid to replace, and the service life of the water color pen is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of watercolor pens, in particular to a watercolor pen with a convenient replacement of the pen head. Background Art

[0002] As the name implies, watercolor pens are pens with bright colors, mainly used for painting. The advantages of watercolor pens are sufficient water content, rich colors, and bright colors; the disadvantages are uneven water content, unnatural transition, and it is difficult to blend two colors together. Therefore, it is generally suitable for children's paintings and has a wide range of uses in the market of children's stationery. Watercolor pens are generally sold in boxes of 12 colors, 24 colors, and 36 colors.

[0003] The existing watercolor pen tips all use fiber tips. Due to the extremely poor wear resistance of fiber tips, the tips are prone to loosening due to wear during long-term writing. The loose tip will affect the normal marking operation of the watercolor pen and cause disordered painting. At this time, the tip of the watercolor pen needs to be replaced, but the existing fiber tip is inserted into the watercolor pen body and fixed by an interference fit between the two. The tip cannot be easily pulled out, which ultimately affects the quality and life of the watercolor pen.

[0004] Therefore, it is necessary to provide a watercolor pen that is convenient to replace the nib to solve the above-mentioned technical problems. Utility Model Content

[0005] The utility model aims to provide a watercolor pen with a convenient replacement of the pen head, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a watercolor pen that is easy to replace the pen tip, comprising a pen holder and a pen cap, the pen cap is arranged on the top of the pen holder, an ink bag is arranged in the pen holder, a mounting hole is provided at the bottom of the pen holder, a first slide groove is provided on the inner wall of the mounting hole, a first arc groove is provided in the middle of the bottom of the first slide groove, a second slide groove is provided on one side of the top of the first slide groove, the second slide groove is arranged perpendicular to the first slide groove, the second slide groove is an annular groove, a second arc groove is provided in the middle of the bottom of the second slide groove, The second arc groove is connected with the first arc groove, and a limiting hole is provided on the outer circumferential surface of the lower end of the pen shaft, and the limiting hole passes through the second arc groove. A pressing mechanism is arranged in the limiting hole, and a chuck is slidably arranged in the mounting hole. A slider is arranged on the outer circumferential surface of the chuck, and the slider is slidably arranged in the first slide groove. A placement groove is provided on the side wall of the slider, and a limiting mechanism for limiting the movement of the chuck is provided in the placement groove. A socket and a connecting hole are sequentially provided in the middle part of the chuck, a pen tip is inserted in the socket, and the top of the pen tip is inserted into the ink sac.

[0007] As a preferred technical solution of the utility model, four clamping strips are arranged on the inner wall of the connecting hole, the top of the pen tip passes through the clamping strips and the insertion hole in sequence, and the clamping strips are chamfered.

[0008] As a preferred technical solution of the utility model, the limiting mechanism includes a fixed column, which is arranged in a placement groove, a sliding column is slidably arranged in the fixed column, a cover is arranged at the end of the fixed column, a first spring is arranged between the cover and the sliding column, a conical hole is opened at the end of the fixed column, and a ball is rolled in the conical hole.

[0009] As a preferred technical solution of the utility model, a first groove is formed at the end of the sliding column, the first groove is a partial spherical groove, and the spherical outer edge of the ball abuts against the first groove.

[0010] As a preferred technical solution of the utility model, the pressing mechanism includes a fixed ring, which is arranged in a limiting hole, a movable head is slidably arranged in the middle of the limiting hole, the movable head structure is a stepped shaft structure, a pressing head is arranged at one end of the movable head, a second spring is arranged between the pressing head and the fixed ring, and the second spring is sleeved on the outer circumferential surface of the movable head.

[0011] As a preferred technical solution of the utility model, a second groove is formed at the other end of the movable head, and the second groove is a partial spherical groove.

[0012] As a preferred technical solution of the utility model, the second sliding groove is opened along the inner wall of the mounting hole and takes the center of the mounting hole as the rotation center.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model discloses a watercolor pen which is convenient for replacing the pen tip. When in use, the pen tip is inserted into the insertion hole of the clamp, the upper end of the pen tip is clamped between four clamping strips, and the head of the pen tip is in contact with the ink bag in the pen holder, so as to absorb the ink in the ink bag for writing. The slider of the clamp is aligned with the first slide groove and then inserted into the installation hole, so that the top of the slider abuts against the top of the second slide groove. During the sliding process, the ball of the limiting mechanism rolls in the first arc groove, the clamp is rotated to make the slider slide along the second slide groove, and the ball rolls along the second arc groove until the ball rolls above the limiting hole. The ball is extended and retracted to the outside of the tapered hole under the action of the first spring, and the ink is written into the ink bag. The chuck can be inserted into the limiting hole at this time, and the chuck cannot be rotated and is limited and fixed. When the pen tip is worn out after being used for a long time or a new type of pen tip needs to be replaced, the user only needs to press the pressing head of the pressing mechanism and push the movable head to press the ball, so that the ball shrinks toward the inside of the tapered hole and disengages from the limiting hole. At this time, the chuck is rotated until the slider is located in the first sliding groove, and the chuck can be pulled down to disengage from the mounting hole of the pen barrel. The pen tip can be easily pushed out of the socket from the top of the chuck using a tool, and the chuck can be installed on the pen barrel after replacing the new pen tip. There is no need to replace all of them, which saves costs. The pen tip is convenient and quick to replace, which greatly extends the service life of the watercolor pen. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is an enlarged view of point A of the utility model;

[0018] Figure 3 It is a three-dimensional schematic diagram of the pen holder structure of the utility model;

[0019] Figure 4 It is a three-dimensional schematic diagram of the structure at B of the utility model;

[0020] Figure 5 It is a three-dimensional schematic diagram of the connection relationship between the clamp and the limiting mechanism of the utility model;

[0021] Figure 6 It is a three-dimensional schematic diagram of the chuck structure of the utility model;

[0022] Figure 7 It is a three-dimensional schematic diagram of the limit mechanism structure of the utility model;

[0023] Figure 8 It is a three-dimensional schematic diagram of the pressing mechanism structure of the utility model.

[0024] In the figure: 1. pen holder; 101. mounting hole; 102. first slide groove; 103. first arc groove; 104. second slide groove; 105. second arc groove; 106. limiting hole; 2. pen cap; 3. chuck; 31. slider; 32. socket; 33. connecting hole; 34. clamping strip; 35. placement slot; 4. pen tip; 5. limiting mechanism; 51. fixed column; 511. conical hole; 52. sliding column; 521. first groove; 53. first spring; 54. cover; 55. ball; 6. pressing mechanism; 61. fixed ring; 62. pressing head; 63. movable head; 631. second groove; 64. second spring. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described below with reference to the accompanying drawings. In the process, in order to ensure the clarity and convenience of the description, we may exaggerate the width of the lines or the size of the components in the drawings.

[0026] In addition, the terms used below are defined based on the functions of the present invention and may differ depending on the intention or custom of the user or operator. Therefore, these terms are defined based on the entire contents of this specification.

[0027] like Figures 1 to 8As shown, a watercolor pen that is easy to replace the pen tip comprises a pen holder 1 and a pen cap 2, wherein the pen cap 2 is arranged on the top of the pen holder 1, an ink bag is arranged in the pen holder 1 for providing ink for writing, a mounting hole 101 is arranged at the bottom of the pen holder 1, a first slide groove 102 is arranged on the inner wall of the mounting hole 101, a first arc groove 103 is arranged in the middle of the bottom of the first slide groove 102, a second slide groove 104 is arranged on one side of the top of the first slide groove 102, and the second slide groove 104 is connected to the first slide groove 102 The second slide groove 104 is vertically arranged, and is an annular groove. The second slide groove 104 is opened along the inner wall of the mounting hole 101 and the center of the mounting hole 101 is used as the rotation center. A second arc groove 105 is opened in the middle of the bottom of the second slide groove 104, and the second arc groove 105 is connected to the first arc groove 103. A limiting hole 106 is opened on the outer circumferential surface of the lower end of the pen holder 1, and the limiting hole 106 passes through the second arc groove 105. A pressing mechanism 6 is arranged in the limiting hole 106. The mounting hole 10 1 is provided with a chuck 3 for sliding movement, a slider 31 is provided on the outer circumferential surface of the chuck 3, the slider 31 is slidably provided in the first slide groove 102, a placement groove 35 is provided on the side wall of the slider 31, and a limiting mechanism 5 is provided in the placement groove 35. When in use, the slider 31 of the chuck 3 is aligned with the first slide groove 102 and then inserted into the mounting hole 101, so that the top of the slider 31 abuts against the top of the second slide groove 104. During the sliding process, the head of the limiting mechanism 5 rolls in the first arc groove 103, and the chuck is rotated. The slider 31 is made to slide along the second slide groove 104, and the head of the limiting mechanism 5 rolls along the second arc groove 105 until the head of the limiting mechanism 5 enters into the limiting hole 106. At this time, the chuck 3 is limited and fixed. The middle part of the chuck 3 is provided with an insertion hole 32 and a connecting hole 33 in sequence. The inner wall of the connecting hole 33 is provided with four clamping strips 34. The nib 4 is inserted into the insertion hole 32. The top of the nib 4 passes through the clamping strip 34 and the insertion hole 32 in sequence. The clamping strip 34 is provided with a chamfer to facilitate the insertion of the top of the nib 4.

[0028] like Figure 7As shown, the limiting mechanism 5 includes a fixed column 51, which is arranged in the placement groove 35, and a sliding column 52 is slidably arranged in the fixed column 51. A cover 54 is arranged at the end of the fixed column 51, and a first spring 53 is arranged between the cover 54 and the sliding column 52. A tapered hole 511 is provided at the end of the fixed column 51, and a ball 55 is rolled in the tapered hole 511. A first groove 521 is provided at the end of the sliding column 52, and the first groove 521 is a partial spherical groove. The spherical outer edge of the ball 55 abuts against the first groove 521. Under the action of the first spring 53, the first groove 521 of the sliding column 52 is always pressed against the ball 55. When the ball 55 is subjected to external pressure, it pushes the sliding column 52 to compress the first spring 53 to shrink, thereby causing the ball 55 to shrink toward the inside of the tapered hole 511, ensuring that the head of the ball 55 always rolls against the outside world.

[0029] like Figure 8 As shown, the pressing mechanism 6 includes a fixing ring 61, and the fixing ring 61 is arranged in the limiting hole 106. A movable head 63 is slidably arranged in the middle of the limiting hole 106. The movable head 63 structure is a stepped shaft structure. A pressing head 62 is arranged at one end of the movable head 63. A second spring 64 is arranged between the pressing head 62 and the fixing ring 61. The second spring 64 is sleeved on the outer circumference of the movable head 63. A second groove 631 is provided at the other end of the movable head 63. The user pushes the movable head 63 to slide into the limiting hole 106 by pressing the pressing head 62 until the movable head 63 presses the ball 55 to shrink inward, thereby causing the ball 55 to disengage from the limiting hole 106. At this time, the chuck 3 can be removed from the mounting hole 101 by rotating it.

[0030] The specific implementation method is as follows: when in use, the pen tip 4 is inserted into the insertion hole 32 of the chuck 3, the upper end of the pen tip 4 is engaged between the four clamping strips 34, and the head of the pen tip 4 is in contact with the ink bag in the pen body 1, so as to absorb the ink in the ink bag for writing. The slider 31 of the chuck 3 is aligned with the first slide groove 102 and then inserted into the mounting hole 101, so that the top of the slider 31 abuts against the top of the second slide groove 104. During the sliding process, the ball 55 of the limiting mechanism 5 rolls in the first arc groove 103, and the chuck 3 is rotated to make the slider 31 slide along the second slide groove 104, and the ball 55 rolls along the second arc groove 105 until the ball 55 rolls above the limiting hole 106. The ball 55 extends to the outside of the tapered hole 511 under the action of the first spring 53. The chuck 3 shrinks and enters the limiting hole 106. At this time, the chuck 3 cannot rotate and is fixed in place. When the pen tip 4 is worn out after being used for a long time or needs to be replaced with a new type of pen tip 4, the user only needs to press the pressing head 62 of the pressing mechanism 6 and push the movable head 63 to press the ball 55, so that the ball 55 shrinks toward the inside of the tapered hole 511 and disengages from the limiting hole 106. At this time, the chuck 3 is rotated until the slider 31 is located in the first slide groove 102. The chuck 3 can be pulled downward to disengage from the mounting hole 101 of the pen barrel 1. The pen tip 4 can be easily pushed out of the socket 32 ​​from the top of the chuck 3 using a tool. After replacing the new pen tip 4, the chuck 3 can be installed on the pen barrel 1. There is no need to replace all of them, which saves costs and makes the pen tip 4 easy and quick to replace.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A watercolor pen with a conveniently replaceable pen tip, comprising a pen holder (1) and a pen cover (2), wherein the pen cover (2) is arranged on the top of the pen holder (1), and an ink bag is arranged inside the pen holder (1), characterized in that: The pen holder (1) is provided with a mounting hole (101) at the bottom, a first slide groove (102) is provided on the inner wall of the mounting hole (101), a first arc groove (103) is provided in the middle of the bottom of the first slide groove (102), a second slide groove (104) is provided on one side of the top of the first slide groove (102), the second slide groove (104) is vertically arranged with the first slide groove (102), the second slide groove (104) is an annular groove, a second arc groove (105) is provided in the middle of the bottom of the second slide groove (104), the second arc groove (105) is connected with the first arc groove (103), a limiting hole (106) is provided on the outer circumferential surface of the lower end of the pen holder (1), the The limiting hole (106) passes through the second arc groove (105), a pressing mechanism (6) is arranged in the limiting hole (106), a chuck (3) is slidably arranged in the mounting hole (101), a slider (31) is arranged on the outer circumferential surface of the chuck (3), the slider (31) is slidably arranged in the first slide groove (102), a placement groove (35) is provided on the side wall of the slider (31), a limiting mechanism (5) for limiting the movement of the chuck (3) is arranged in the placement groove (35), an insertion hole (32) and a connecting hole (33) are sequentially provided in the middle of the chuck (3), a pen tip (4) is inserted in the insertion hole (32), and the top of the pen tip (4) is inserted into the ink bag.

2. The watercolor pen with an easily replaceable pen tip according to claim 1, characterized in that: Four clamping strips (34) are arranged on the inner wall of the connection hole (33); the top of the pen tip (4) passes through the clamping strips (34) and the insertion hole (32) in sequence; and the clamping strips (34) are provided with chamfers.

3. The watercolor pen with an easily replaceable pen tip according to claim 1, characterized in that: The limiting mechanism (5) comprises a fixed column (51), the fixed column (51) is arranged in the placement groove (35), a sliding column (52) is slidably arranged in the fixed column (51), a cover (54) is arranged at the end of the fixed column (51), a first spring (53) is arranged between the cover (54) and the sliding column (52), and a conical hole (511) is opened at the end of the fixed column (51), and a ball (55) is rolled in the conical hole (511).

4. The watercolor pen with easily replaceable pen tip according to claim 3, characterized in that: A first groove (521) is formed at the end of the sliding column (52), and the first groove (521) is a partial spherical groove. The spherical outer edge of the ball (55) abuts against the first groove (521).

5. The watercolor pen with easily replaceable pen tip according to claim 1, characterized in that: The pressing mechanism (6) comprises a fixed ring (61), the fixed ring (61) is arranged in a limiting hole (106), a movable head (63) is slidably arranged in the middle of the limiting hole (106), the movable head (63) is a stepped shaft structure, a pressing head (62) is arranged at one end of the movable head (63), a second spring (64) is arranged between the pressing head (62) and the fixed ring (61), and the second spring (64) is sleeved on the outer circumferential surface of the movable head (63).

6. A watercolor pen with an easily replaceable pen tip according to claim 5, characterized in that: The other end of the movable head (63) is provided with a second groove (631), and the second groove (631) is a partial spherical groove.

7. The watercolor pen with easily replaceable pen tip according to claim 1, characterized in that: The second sliding groove (104) is opened along the inner wall of the mounting hole (101) and takes the center of the mounting hole (101) as the rotation center.

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