A pen tube and electric drawing pen for convenient replacement of pen core

Abstract

The invention discloses a pen tube and an electric drawing brush for conveniently replacing pen refills, which are used to improve the efficiency of replacing pen refills. A hatch installation hole is provided on a tube wall on one side of the pen tube, a movable hatch is rotatably connected in the hatch installation hole, a first end of the movable hatch is rotatably connected to the hatch installation hole through a rotating shaft, a tubular cabin body for accommodating the pen refill is provided on one side of the movable cabin body, and a locking member for locking the tubular cabin body is provided in the accommodating cavity; the tubular cabin body is unlocked by an unlocking part, and the movable cabin door is opened, so that the pen refill can be quickly replaced without disassembling the pen tube, thereby greatly improving the efficiency of replacing the pen refill.

Description

Technical Field

[0001] The invention relates to the technical field of stationery products, and in particular to a pen tube and an electric drawing pen for convenient replacement of pen cores. Background Art

[0002] When replacing the refill of existing gel pens and ballpoint pens, the refill is usually replaced by unscrewing or pulling out the pen tube. Please refer to Figure 1 , Figure 1 This is a most common pen barrel structure in the prior art, which adopts a two-stage separation structure, that is, the pen barrel is composed of a first pen barrel portion 21 and a second pen barrel portion 22, which are threadedly connected. When the conventional pen refill 10 needs to be replaced, the first pen barrel portion 21 and the second pen barrel portion 22 are separated by turning a knob to replace the conventional pen refill 10. This method of replacing the pen refill is relatively cumbersome and time-consuming.

[0003] This defect is particularly prominent in some occasions, such as pointillism. Before the invention of the electric brush, artists have always used a purely manual method to create pointillism, a painting method that consists of many discrete dots and is in the style of impressionist art. The invention of the electric brush has greatly improved the efficiency of pointillism, a creative technique that is popular among artists and art lovers around the world.

[0004] When creating colored works, electric drawing brushes need to frequently replace different colored refills. Existing electric drawing brushes are also limited by the traditional method of replacing refills. When replacing refills, the pen barrel must be unscrewed, the refill must be replaced, and then the pen barrel must be screwed on. This process is very complicated, especially when creating colored works. The colored refills required for the works need to be constantly replaced, which is very inefficient and not conducive to the artist's continuous creation.

[0005] Therefore, it is necessary to improve the traditional pen tube structure to improve the efficiency of replacing the pen core. Summary of the invention

[0006] The purpose of the present invention is to provide a pen tube and an electric drawing brush with convenient replacement of the pen core, so as to solve the above technical problems.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] In a first aspect, the present invention provides a pen tube for conveniently replacing a pen core, wherein a receiving cavity is provided in the pen tube; a hatch installation hole is provided on a tube wall of one side of the pen tube, a movable hatch is rotatably connected in the hatch installation hole, and a first end of the movable hatch is rotatably connected to the hatch installation hole via a rotating shaft; a tubular cabin body for accommodating the pen core is provided on a side of the movable hatch facing the receiving cavity;

[0009] A locking piece for locking the tubular cabin body is arranged in the accommodating cavity; the locking piece is provided with an unlocking portion for unlocking the tubular cabin body, and the unlocking portion protrudes from the outside of the pen tube.

[0010] Optionally, a plurality of slots are provided on the shell of the tubular cabin body;

[0011] The locking member comprises a sliding pin installed in the pen tube; a side of the sliding pin facing the tubular cabin is provided with a plurality of convex buckles for cooperating with the slot to lock the tubular cabin;

[0012] A strip-shaped slide groove is provided on the tube wall of the pen tube, and the unlocking portion is provided at one end of the slide pin; the unlocking portion passes through the strip-shaped slide groove and protrudes from the outside of the pen tube; the unlocking portion can slide along the strip-shaped slide groove;

[0013] When the movable hatch is closed, the unlocking portion is in a predetermined locking position, the convex buckle is inserted into the slot and locked, and the tubular cabin body is locked; when the unlocking portion is driven to slide along the strip-shaped slide groove to a predetermined unlocking position, the convex buckle disengages from the slot, and the tubular cabin body is then unlocked.

[0014] Optionally, the locking member further comprises a double torsion spring;

[0015] The first extension arm of the double torsion spring is fixedly connected to the sliding pin; the second extension arm of the double torsion spring is fixedly connected to a side of the cabin shell away from the movable cabin door;

[0016] When the movable cabin door is closed, the unlocking part is in the locking position and the tubular cabin body is locked; when replacing the pen refill, the unlocking part is driven to slide along the strip slide groove to the unlocking position, the tubular cabin body is unlocked, the double torsion spring pops open the tubular cabin body, and the movable cabin door is opened; the pen refill to be replaced is taken out of the tubular cabin body, and the pen refill to be used is put into the tubular cabin body. After replacing the pen refill, the movable cabin door is pressed, and the second extension arm is pressed and closed by the cabin shell toward the direction of the first extension arm, and the double torsion spring passively approaches the head of the pen tube, and the sliding pin is driven to slide together until the movable cabin door is closed, the unlocking part slides along the strip slide groove to the locking position, each of the convex buckles is correspondingly inserted into each of the card slots and locked, and the tubular cabin body is locked again.

[0017] Optionally, the end of the convex buckle is provided with a hook-shaped buckle portion; the slot is passed through the tubular cabin;

[0018] When the unlocking portion is in a predetermined locking position, the hook-shaped buckling portion extends into the tubular cabin body through the slot opening and hooks the inner cabin wall of the tubular cabin body.

[0019] Optionally, the first extension arm and the second extension arm of the double torsion spring both extend toward a side away from the unlocking portion.

[0020] Optionally, the number of the card slots is two; the number of the protruding buckles is two.

[0021] In a second aspect, the present invention further provides an electric drawing pen, comprising a pen tube for convenient replacement of the pen core, and also comprising: a magnetic touch pen core, a driving device and a magnet mounting seat;

[0022] The driving device is arranged in the accommodating cavity, and the driving end of the driving device is drivingly connected to the magnet mounting seat, and is used to drive the magnet mounting seat to perform reciprocating linear motion;

[0023] An iron block or a permanent magnet is arranged at one end of the magnetic stylus pen core close to the magnet mounting seat; a pen core connecting magnet for magnetically attracting the iron block or the permanent magnet is installed on the side of the magnet mounting seat facing the tubular cabin body; when the movable cabin door is closed, the pen core connecting magnet is magnetically attracted to the iron block or the permanent magnet.

[0024] When the movable cabin door is closed, the tubular cabin body is locked at the same time, and under the influence of the magnetic force of the magnet mounting seat, the end of the magnetic stylus core close to the magnet mounting seat is adsorbed to the magnet mounting seat, thereby merging with the magnet mounting seat; the attraction between the magnetic stylus core and the magnet mounting seat is affected by the magnetic force. When the external force applied to the magnetic stylus core is greater than the magnetic force, the magnetic stylus core will leave the magnet mounting seat to which it is adsorbed, and the movable cabin door can be opened.

[0025] When the unlocking portion is in the unlocking position, the movable cabin door can be opened, and one end of the magnetic stylus core is separated from the magnet mounting seat by the external force applied to the tubular cabin body and is brought out of the pen tube by the tubular cabin body, completing the separation action.

[0026] Optionally, a guide block matching the shape of the magnet mounting seat is further provided in the pen tube for guiding the magnet mounting seat to perform linear reciprocating motion.

[0027] Optionally, the iron block or the permanent magnet is spherical or hemispherical.

[0028] Optionally, the driving device is a miniature linear reciprocating motor.

[0029] The beneficial effects of the present invention are as follows: when the pen refill needs to be replaced, the tubular cabin body is unlocked by the unlocking part, and the movable cabin door is opened, so that the old pen refill can be directly drawn out of the tubular cabin body; after the new pen refill is slid into the accommodating cavity along the tubular cabin body, the pen refill can be replaced without disassembling the pen tube; the pen tube provided by the present invention requires fewer steps when replacing the pen refill, which greatly improves the efficiency of replacing the pen refill and realizes the rapid replacement of the pen refill. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0031] Figure 1 A structural principle diagram of a prior art pen tube structure provided in an embodiment of the present invention.

[0032] Figure 2 The figure is a schematic diagram of the pen tube structure of an electric drawing brush according to an embodiment of the present invention.

[0033] Figure 3 for Figure 2 A partial enlarged schematic diagram of the structure.

[0034] Figure 4 The present invention is a schematic diagram of the pen barrel structure of an electric drawing pen in a state of replacing the pen core according to an embodiment of the present invention.

[0035] In the figure:

[0036] 10. Traditional pen core; 21. First pen barrel; 22. Second pen barrel;

[0037] 100, pen tube; 101, accommodating cavity; 102, strip-shaped slide groove; 110, tubular cabin; 111, movable cabin door; 112, cabin shell; 1121, slot; 113, rotating shaft; 120, pen core connecting magnet; 121, magnet mounting seat; 122, guide block;

[0038] 200, sliding pin; 201, convex buckle; 210, double torsion spring; 211, first extension arm; 212, second extension arm;

[0039] 300. Magnetic stylus refill; 311. Iron block. DETAILED DESCRIPTION

[0040] The embodiment of the present invention provides a pen tube and an electric drawing brush with convenient refill replacement, which are used to improve the efficiency of refill replacement and facilitate continuous creation of artists.

[0041] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0043] Please refer to Figure 2 and Figure 3 , Figure 2 Schematic diagram of the pen tube structure of an electric drawing pen according to an embodiment of the present invention. Figure 3 for Figure 2 A partial enlarged schematic diagram of the structure.

[0044] The electric drawing pen of the embodiment of the present invention specifically comprises a pen tube 100, a magnetic stylus pen core 300, a driving device and a magnet mounting seat 121;

[0045] The pen tube 100 is provided with a receiving chamber 101; the driving device and the magnet mounting seat 121 are both arranged in the receiving chamber 101, and the driving end of the driving device is transmission-connected with the magnet mounting seat 121 for driving the magnet mounting seat 121 to perform reciprocating linear motion; in this embodiment, the driving device adopts a miniature linear reciprocating motor.

[0046] Please continue to refer to Figure 4 , Figure 4 The present invention is a schematic diagram of the pen barrel structure of an electric drawing pen in a state of replacing the pen core according to an embodiment of the present invention.

[0047] Specifically, a guide block 122 matching the shape of the magnet mounting seat 121 is further provided in the pen barrel 100. In this embodiment, the guide block 122 is annular in structure, and when the magnet mounting seat 121 is driven by the driving device to perform reciprocating linear motion, the guide block 122 can ensure the stability of the reciprocating linear motion.

[0048] One side of the pen tube 100 ( Figure 2 A hatch installation hole is provided on the upper side of the pen tube 100, and a movable hatch 111 is rotatably connected to the hatch installation hole. The first end ( Figure 2The left end of the movable hatch 111 in the middle is rotatably connected to the hatch installation hole through the rotating shaft 113; the inner side of the movable hatch 111 (the side of the movable hatch 111 facing the accommodating cavity 101) is provided with a tubular cabin 110 for accommodating the magnetic stylus core 300; an iron block 311 or a permanent magnet is provided at one end of the magnetic stylus core 300 close to the magnet mounting seat 121; the side of the magnet mounting seat 121 facing the tubular cabin 110 ( Figure 4 A pen core connecting magnet 120 for a magnetic iron block 311 or a permanent magnet is installed on the left side of the middle magnet mounting seat 121.

[0049] When the electric drawing pen is used normally, the movable hatch 111 is closed, and one end of the magnetic stylus core 300 (the writing end of the magnetic stylus core 300) can be extended through the core extension hole ( Figure 2 The other end of the magnetic stylus core 300 passes through the tubular cabin 110 and is magnetically attracted to the core connecting magnet 120.

[0050] Specifically, a locking member for locking the tubular cabin body 110 is further provided in the accommodating cavity 101 ; the locking member is provided with an unlocking portion for unlocking the tubular cabin body 110 , and the unlocking portion protrudes from the outside of the pen tube 100 .

[0051] The electric drawing brush provided in this embodiment can directly remove the magnetic touch pen core 300 from the tubular cabin 110 by unlocking the tubular cabin 110 through the unlocking part and opening the movable cabin door 111 when the pen core needs to be replaced; after the magnetic touch pen core 300 to be used is slid into the accommodating cavity 101 along the tubular cabin 111, the pen core replacement is completed without disassembling the pen tube 100; the pen tube 100 provided by the present invention requires fewer steps when replacing the pen core, which greatly improves the efficiency of replacing the pen core and realizes the rapid replacement of the pen core.

[0052] More specifically, a plurality of slots 1121 are provided on the housing 112 of the tubular housing 110;

[0053] The locking member includes a sliding pin 200 installed in the pen tube 100; a side of the sliding pin 200 facing the tubular cabin 110 is provided with a plurality of protruding buckles 201 for cooperating with the slot 1121 to lock the tubular cabin 110;

[0054] A strip-shaped slide groove 102 is provided on the wall of the pen tube 100, and the unlocking portion is provided at one end of the slide pin 200 ( Figure 4 The unlocking portion passes through the strip-shaped slide groove 102 and protrudes from the outside of the pen tube 100; the unlocking portion can slide along the strip-shaped slide groove 102;

[0055] When the movable door 111 is closed, the unlocking portion is in a predetermined locking position, the convex buckle 201 is inserted into the slot 1121 and locked, and the tubular cabin body 110 is locked; when the unlocking portion is driven to slide along the strip slide 102 to the predetermined unlocking position, the convex buckle 201 disengages from the slot 1121, and the tubular cabin body 110 is thereby unlocked.

[0056] In this embodiment, the tubular cabin body 110 can be locked and unlocked by sliding the sliding pin 200 to different positions, which has a simple structure and is easy to operate.

[0057] Specifically, the locking member further includes a double torsion spring 210;

[0058] The first extension arm 211 of the double torsion spring 210 is fixedly connected to the slide pin 200; the second extension arm 212 of the double torsion spring 210 is connected to the side of the cabin shell 112 away from the movable cabin door 111 ( Figure 2 The lower side of the movable hatch 111 is fixedly connected.

[0059] When the movable door 111 is closed, the unlocking part is in the locked position and the tubular cabin body 110 is locked; when replacing the pen core, the unlocking part is driven to slide along the strip-shaped slide groove 102 to the unlocking position (along the Figure 4 The unlocking part is toggled in the direction of the arrow shown in the figure), the tubular cabin body 110 is unlocked, and the rebound force released by the double torsion spring 210 in the compressed state will bounce off the tubular cabin body 110, and the movable cabin door 111 is automatically opened; after the pen core is replaced, the movable cabin door 111 is pressed, and the second extension arm 212 is pressed and moved toward the first extension arm 211 by the cabin shell 112, and the double torsion spring 210 body is passively moved toward the head of the pen tube 100 (along the Figure 4 The sliding pin 200 is driven to slide together until the movable door 111 is closed, and the unlocking portion slides along the strip slide groove 102 to the locked position, and each convex buckle 201 is correspondingly inserted into each slot opening 1121 and locked, and the tubular cabin body 110 is locked again.

[0060] By providing a double torsion spring 210, the tubular cabin body 110 can automatically pop open after being unlocked, making it more convenient and quick to replace the pen core. At the same time, by pressing the movable cabin door 111 to a closed state, the unlocking part can also automatically slide along the strip slide groove 102 to a locked position, completing the automatic locking of the tubular cabin body 110, making the entire operation process of replacing the pen core more convenient.

[0061] In this embodiment, the iron block 311 or the permanent magnet is spherical or hemispherical. The iron block 311 and the pen core connecting magnet 120 adopt point contact or arc surface contact. Adopting point contact or arc surface contact can make it easier for the magnetic stylus pen core 300 to separate from the pen core connecting magnet 120 when the tubular cabin 110 is ejected, thereby reducing the friction loss of the pen core connecting magnet 120.

[0062] As a more specific implementation, in this embodiment, the end of the protruding buckle 201 is provided with a hook-shaped buckling portion; the slot 1121 penetrates into the tubular cabin 110;

[0063] When the unlocking portion is in a predetermined locking position, the hook-shaped buckling portion extends into the tubular cabin body 110 through the slot opening 1121 and hooks the inner wall of the tubular cabin body 110 .

[0064] The above structure can completely realize the locking of the tubular cabin body 110, but it can be understood that there are many other locking structures that can realize the locking of the tubular cabin body 110, which will not be listed in detail in this embodiment.

[0065] Specifically, in this embodiment, the first extension arm 211 and the second extension arm 212 of the double torsion spring 210 both extend toward a side away from the unlocking portion.

[0066] Specifically, in this embodiment, there are two slots 1121 and two convex buckles 201. The two locking points can make the locking of the tubular cabin 110 more stable, but it can be understood that there can be more than one slot 1121, and therefore, the number of the slots 1121 or the convex buckles 201 should not be understood as limiting the technical solution of the present invention.

[0067] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0068] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pen tube for convenient replacement of pen cores, wherein a receiving cavity is provided in the pen tube; characterized in that: A hatch installation hole is provided on a tube wall of one side of the pen tube, a movable hatch is rotatably connected in the hatch installation hole, and a first end of the movable hatch is rotatably connected to the hatch installation hole via a rotating shaft; a tubular cabin body for accommodating a pen core is provided on a side of the movable hatch facing the accommodating cavity; A locking member for locking the tubular cabin is disposed in the accommodating cavity; the locking member is provided with an unlocking portion for unlocking the tubular cabin, and the unlocking portion protrudes from the outside of the pen tube; The shell of the tubular cabin body is provided with a plurality of slots; The locking member comprises a sliding pin installed in the pen tube; a side of the sliding pin facing the tubular cabin is provided with a plurality of convex buckles for cooperating with the slot to lock the tubular cabin; A strip-shaped slide groove is provided on the tube wall of the pen tube, and the unlocking portion is provided at one end of the slide pin; the unlocking portion passes through the strip-shaped slide groove and protrudes from the outside of the pen tube; the unlocking portion can slide along the strip-shaped slide groove; When the movable hatch is closed, the unlocking portion is in a predetermined locking position, the convex buckle is inserted into the slot and locked, and the tubular cabin body is locked; when the unlocking portion is driven to slide along the strip-shaped slide groove to a predetermined unlocking position, the convex buckle disengages from the slot, and the tubular cabin body is then unlocked.

2. The pen tube for convenient refill replacement according to claim 1, characterized in that: The locking member also includes a double torsion spring; The first extension arm of the double torsion spring is fixedly connected to the sliding pin; the second extension arm of the double torsion spring is fixedly connected to a side of the cabin shell away from the movable cabin door; When the tubular cabin body is unlocked, the double torsion spring pops open the tubular cabin body and the movable cabin door is opened; the movable cabin door is pressed, the second extension arm is pressed and moved closer by the cabin shell toward the first extension arm, the double torsion spring passively approaches the head of the pen tube, and the sliding pin is driven to slide together until the movable cabin door is closed, the unlocking part slides along the strip slide groove to the locking position, each of the convex buckles is correspondingly inserted into each of the slots and locked, and the tubular cabin body is locked again.

3. The pen tube for convenient refill replacement according to claim 1, characterized in that: The end of the convex buckle is provided with a hook-shaped buckle portion; the slot is passed through the tubular cabin; When the unlocking portion is in a predetermined locking position, the hook-shaped buckling portion extends into the tubular cabin body through the slot opening and hooks the inner cabin wall of the tubular cabin body.

4. The pen tube for convenient refill replacement according to claim 2, characterized in that: The first extension arm and the second extension arm of the double torsion spring both extend toward a side away from the unlocking portion.

5. The pen tube for convenient refill replacement according to claim 1, characterized in that: The number of the card slots is two; the number of the convex buckles is two.

6. An electric drawing brush, comprising the convenient refill replacement pen tube according to any one of claims 1 to 5, characterized in that: Also includes: Magnetic stylus refill, drive device and magnet mounting base; The driving device is arranged in the accommodating cavity, and the driving end of the driving device is drivingly connected to the magnet mounting seat, and is used to drive the magnet mounting seat to perform reciprocating linear motion; An iron block or a permanent magnet is arranged at one end of the magnetic stylus pen core close to the magnet mounting seat; a pen core connecting magnet for magnetically attracting the iron block or the permanent magnet is installed on the side of the magnet mounting seat facing the tubular cabin body; when the movable cabin door is closed, the pen core connecting magnet is magnetically attracted to the iron block or the permanent magnet.

7. The electric drawing brush according to claim 6, characterized in that: A guide block is also provided in the pen tube for guiding the magnet mounting seat to perform linear reciprocating motion.

8. The electric drawing brush according to claim 6, characterized in that: The iron block or the permanent magnet is spherical or hemispherical.

9. The electric drawing brush according to claim 6, characterized in that: The driving device is a miniature linear reciprocating motor.

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