Extremely low-noise pressing pen

Abstract

The invention discloses an extremely-low-noise pressing pen which comprises a pen holder, a pen core, a spring and a pressing mechanism, the pen core, the spring and the pressing mechanism are mounted in the pen holder, the pressing mechanism comprises a rotating block and a pressing core, the rotating block is configured to only rotate around the center axis of the rotating block in the pen holder, and the pressing core is configured to only slide in the pen holder in the axis direction of the pen holder. Two U-shaped grooves are symmetrically formed in the two ends of the rotating block, a sliding groove is formed in the outer side face of the pressing core in the sliding direction, and the rotating block is located in the sliding groove. The sliding groove comprises a guiding area and a rotating area which is located at the top of the guiding area and communicated with the guiding area. When the pressing core slides, the rotating block can be switched between the guiding area and the rotating area. The top of the rotating area is provided with a first protrusion and a second protrusion located on one side of the first protrusion, the bottom end of the second protrusion is lower than the bottom end of the first protrusion, and the bottom of the rotating area is provided with a third protrusion located below the first protrusion. The pressing pen is extremely low in noise during pressing, simple in structure and easy to produce.

Description

Technical Field

[0001] The invention relates to the technical field of pens, and in particular to an extremely low-noise click pen. Background Art

[0002] At present, before writing, the pen tip of a common traditional push-type writing tool pen (such as a ballpoint pen, a gel pen, etc.) is normally in the original retracted state. When the push head is pressed downward along the axial direction, the push core, the rotating wheel, and the pen core installed in the pen holder are driven to move along the guide rail and the guide groove toward the front end of the pen holder. When the rotating wheel reaches the lowest end of the guide rail inside the tail plug, the saw teeth on the push core transmit the force to the beveled tooth surface of the rotating wheel, generating a circumferential component force, so that after rotating it by a certain angle, the beveled tooth surface on the rotating wheel immediately slides into the small beveled surface at the bottom of the guide rail and cooperates with each other and locks, completing the task of extending the pen tip out of the pen holder. When the push head is pressed downward again, the beveled tooth surface on the rotating wheel separates from the small beveled surface, and after the rotating wheel rotates and is guided into the guide groove, under the elastic force of the pen core spring, the rotating wheel, the push core, and the pen tip return to the original position, completing the task of retracting the pen tip into the pen holder. In the process of repeatedly extending and retracting the pen tip, a certain decibel of "clicking" noise will always be emitted from the inside of the pressing mechanism. This noise can easily make people irritated and distract their attention during study or work. It will especially affect students' problem-solving thinking and the user experience is not very good. Summary of the invention

[0003] The problem to be solved by the present invention is to provide an extremely low noise snap pen to overcome the defect that a traditional snap writing pen emits a certain decibel of "click" noise when switching states.

[0004] The technical solution adopted by the present invention to solve the technical problem is: an extremely low noise push pen, comprising: a pen holder and a pen core installed in the pen holder, a spring and a push mechanism, wherein the push mechanism is used to cooperate with the spring to drive the pen core to move along the axis direction of the pen holder when being pushed, so that the push pen can be switched between a writing state and a retracted state;

[0005] The pressing mechanism comprises: a rotating block configured to be able to perform rotational movement only around its own central axis in the pen barrel and a pressing core configured to be able to slide only along the axial direction of the pen barrel in the pen barrel, two U-shaped grooves are symmetrically arranged at both ends of the rotating block, and a slide groove is arranged on the outer side surface of the pressing core along the sliding direction, and the rotating block is located in the slide groove; the slide groove comprises a guide area and a rotating area located at the top of the guide area and connected to each other, and the pressing core can make the rotating block switch between the guide area and the rotating area when sliding; a first protrusion and a second protrusion located on one side of the first protrusion are arranged at the top of the rotating area, and the bottom end of the second protrusion is lower than the bottom end of the first protrusion, and a third protrusion located below the first protrusion is arranged at the bottom of the rotating area;

[0006] During the process of switching the press pen from the retracted state to the writing state: the second protrusion is used to push the rotating block to rotate by a first angle and then be locked in one of the U-shaped grooves, so that the rotating block is in the first rotation position; the third protrusion is used to push the rotating block in the first rotation position to rotate by a second angle and then be locked in another U-shaped groove, so that the rotating block is in the second rotation position, and the press pen is in the writing state at this time;

[0007] During the process of switching the pressing pen from the writing state to the retracted state: the second protrusion is used to push the rotating block in the second rotation position to rotate to a third angle and cooperate with the first protrusion to stop on the rotating block, so that the rotating block is in the third rotation position; the third protrusion is used to push the rotating block in the third rotation position to rotate to a fourth angle and then return to the guide area, at which time the pressing pen is in the retracted state.

[0008] As a further improvement of the present invention, the outer side of the pressing core has a vertical surface, the sliding groove is surrounded by ribs arranged on the vertical surface, and the first protrusion, the second protrusion and the third protrusion are corresponding sections on the ribs.

[0009] As a further improvement of the present invention, the rib includes a first vertical section and a second vertical section distributed at intervals, and the guide area is formed between the first vertical section and the second vertical section; the third protrusion is formed by bending the upper end of the first vertical section in a direction away from the second vertical section, and the upper end of the second vertical section extends obliquely upward to form an arc section horizontally opposite to the third protrusion.

[0010] As a further improvement of the present invention, the rib includes a transverse section, which is divided in the middle to form the first protrusion, the second protrusion and an avoidance zone between the first protrusion and the second protrusion, and a slope is provided at the bottom of the second protrusion, and the slope is inclined downward close to one end of the avoidance zone.

[0011] As a further improvement of the present invention, the rotating block is rectangular, and the two ends of the U-shaped groove are respectively a first dovetail portion and a second dovetail portion, and the first dovetail portion and the second dovetail portion each have two sharp corners;

[0012] When the push pen is in a retracted state, the rotating block is located in the guide area, the notches of the first dovetail portion are distributed upward, and the projection of one of the sharp corners of the first dovetail portion in the vertical direction can fall on the inclined plane;

[0013] When the click pen is in a writing state, the projection of another sharp corner of the first dovetail portion along the vertical direction can fall on the inclined plane.

[0014] As a further improvement of the present invention, the pressing mechanism also includes a positioning plate fixed in the pen shaft, a positioning groove is provided on the side of the positioning plate facing the pressing core, and a turntable is provided on the side of the rotating block facing away from the pressing core, and the turntable rotates in the positioning groove.

[0015] As a further improvement of the present invention, the positioning groove is provided with convex ribs on the groove bottom and inner peripheral wall thereof.

[0016] As a further improvement of the present invention, the inner wall of the pen barrel is radially recessed to form a space-avoiding groove, the positioning plate is inserted into the space-avoiding groove, and an upper cover is fixedly installed on the upper end of the pen barrel, and the upper cover is pressed tightly on the top of the positioning plate.

[0017] As a further improvement of the present invention, a push rod portion is provided on the top of the pressing core, and the push rod portion extends upward through the upper cover, and a top cap is fixedly mounted on the upper end of the push rod portion.

[0018] As a further improvement of the present invention, the outer side surface of the pressing core is provided with a limiting rib along the axial direction, the inner wall of the pen body is radially recessed to form a limiting groove, and the limiting rib is slidably fitted in the limiting groove.

[0019] The beneficial effects of the present invention are as follows: the present invention provides an extremely low noise push pen, which innovates the structure of related parts in the traditional push mechanism, and is designed with a slide groove surrounded by ribs on the vertical surface of the push core. The rotating block has an appearance structure with U-shaped grooves symmetrically arranged at both ends. The rotating block can rotate and slide relatively in the slide groove. When the push core slides up and down, the protrusions on the ribs are used to force the rotating block to rotate and form a stop, so as to realize the switching of the push pen between the writing state and the retracted state. This technology breaks through the traditional thinking mode and structural mode, subverts the structural form of the push mechanism throughout history, and improves the technical level and innovation ability of this industry. When pressing, no "click" noise will be emitted due to the rapid collision of parts, and the sound can be reduced by 90% to 95% compared with the traditional one. When pressing, it feels convenient, practical, natural, comfortable, and humanized, giving people a novel and beautiful enjoyment; at the same time, the structure is simple and compact, easy to assemble, easy to process, low cost, and suitable for mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional diagram of the ultra-low noise click pen of the present invention;

[0021] Figure 2 A cross-sectional view of the ultra-low noise click pen of the present invention;

[0022] Figure 3 The figure is an exploded view of the ultra-low noise click pen of the present invention;

[0023] Figure 4 A three-dimensional diagram of the pressing core in the ultra-low noise pressing pen of the present invention;

[0024] Figure 5 A three-dimensional diagram of the pressing core of the ultra-low noise pressing pen of the present invention from another perspective;

[0025] Figure 6 The top view and half-section view of the pen holder of the ultra-low noise click pen of the present invention;

[0026] Figure 7 A three-dimensional diagram of the assembly of the rotating block and the positioning plate in the ultra-low noise click pen of the present invention;

[0027] Figure 8 A three-dimensional diagram of a positioning plate in the ultra-low noise click pen of the present invention;

[0028] Fig. 9 A three-dimensional diagram of a rotating block in the ultra-low noise click pen of the present invention;

[0029] Fig.10 The diagram is a state change diagram of the pressing mechanism of the ultra-low noise pressing pen of the present invention switching from a retracted state to a writing state;

[0030] Fig.11 The diagram is a state change diagram of the pressing mechanism of the ultra-low noise pressing pen of the present invention switching from a writing state to a retracted state.

[0031] Combined with the attached drawings, the following description is given:

[0032] 1. Pen holder; 101. Avoidance groove; 102. Limiting groove; 2. Pen core; 3. Spring; 4. Rotating block; 41. U-shaped groove; 42. First dovetail; 43. Second dovetail; 44. Turntable; 45. First long surface; 46. Second long surface; 5. Pressing core; 51. Guide area; 511. First vertical section; 512. Second vertical section; 513. Arc section; 52. Rotating area; 521. First protrusion; 522. Second protrusion; 5221. Inclined surface; 523. Third protrusion; 524. Avoidance area; 525. Third vertical section; 526. Fourth vertical section; 53. Vertical surface; 54. Push rod; 55. Limiting rib; 6. Positioning plate; 61. Positioning groove; 611. Convex rib; 7. Upper cover; 8. Top cap; 9. Pen clip. DETAILED DESCRIPTION

[0033] In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the specific implementation methods of the present invention are further described in detail below in conjunction with the drawings and examples. The following examples are used to illustrate the present invention but are not used to limit the scope of protection of the present invention.

[0034] See also Figures 1 to 9 The present invention provides an extremely low noise click pen, comprising: a pen holder 1, a pen core 2, a spring 3 and a click mechanism, wherein the pen holder 1, the pen core 2 and the spring 3 are all existing conventional structures.

[0035] Optionally, in this embodiment, the pen holder 1 is a two-stage structure, including an upper rod and a tip sleeve, which are fixedly connected by a thread. The pen core 2 is coaxially installed in the pen holder 1, and the spring 3 is sleeved on the tip of the pen core 2, and the lower end of the spring 3 elastically abuts on the step inside the tip sleeve, and the upper end of the spring 3 elastically abuts on the step of the pen core 2, so that the spring 3 always exerts an upward elastic force on the pen core 2.

[0036] Furthermore, a pressing mechanism is installed in the upper end of the pen shaft 1. The pressing mechanism is used to cooperate with the spring 3 to drive the pen core 2 to move along the axial direction of the pen shaft 1 when pressed, so that the tip of the pen core 2 can extend or retract into the pen shaft 1, so as to realize the switching of the pressing pen between the writing state and the retracted state.

[0037] Specifically, the pressing mechanism includes a rotating block 4 and a pressing core 5. The rotating block 4 is arranged in the pen body 1 and is configured to be able to rotate only around its own central axis, that is, the rotating block 4 is restricted in all degrees of freedom except the circumferential direction. The central axis of the rotating block 4 is perpendicular to the axis of the pen body 1. Fig. 9 As shown, two U-shaped grooves 41 are symmetrically provided at both ends of the rotating block 4 .

[0038] Preferably, the angle between two sides of the U-shaped groove 41 is 85° to 90°.

[0039] See also Figure 4 The pressing core 5 is in a stepped cylindrical shape, and can be specifically divided into a main body portion at the lower section and a push rod portion 54 at the upper section. The main body portion and the push rod portion 54 are coaxially integrally injection molded, and the diameter of the main body portion is greater than the diameter of the push rod portion 54.

[0040] The top end of the push rod portion 54 is sleeved with a top cap 8 , and the top cap 8 and the push rod portion 54 are fixedly connected by an interference fit between an annular rib provided on the outer circumference of the push rod portion 54 and an annular rib provided on the inner circumference of the top cap 8 .

[0041] See also Figure 2 The push core 5 is arranged in the pen body 1 and is configured to slide only along the axial direction of the pen body 1, that is, the freedom of the push core 5 except the axial direction is restricted. Under the elastic force of the spring 3, the upper end of the pen core 2 abuts against the lower end of the push core 5. When the top cap 8 is pressed, the push core 5 slides vertically up and down along the axial direction, thereby controlling the tip of the pen core 2 to extend or retract into the pen body 1.

[0042] See again Figure 4The main body of the pressing core 5 is cylindrical after being partially cut in the vertical direction. A vertical surface 53 is formed on the outer side of the pressing core 5 at the cutting position. A slide groove is provided on the vertical surface 53 along the sliding direction (i.e., the axial direction of the pen body 1). The slide groove is specifically surrounded by ribs provided on the vertical surface 53; the rotating block 4 is located in the slide groove. The slide groove includes a guide area 51 and a rotating area 52 located at the top of the guide area 51 and connected to each other. When the pressing core 5 slides up and down, the rotating block 4 can switch between the guide area 51 and the rotating area 52. Among them, the width of the rotating area 52 is greater than the width of the guide area 51. When the rotating block 4 is in the guide area 51, the rotating block 4 is restricted by the ribs on both sides of the guide area 51 and cannot rotate; while the rotating block 4 can rotate when it is in the rotating area 52.

[0043] Furthermore, the top of the rotating area 52 is provided with a first protrusion 521 and a second protrusion 522 located on the right side of the first protrusion 521, and the bottom end of the second protrusion 522 is lower than the bottom end of the first protrusion 521. The bottom of the rotating area 52 is provided with a third protrusion 523 located below the first protrusion 521.

[0044] During the process of switching the push pen from the retracted state to the writing state: when pressing down, the second protrusion 522 pushes the rotating block 4 to rotate clockwise by a first angle and then stop in one of the U-shaped grooves 41, and the push core 5 is limited by the rotating block 4 and cannot continue to move down. At this time, the rotating block 4 is in the first rotation position; when rebounding, the third protrusion 523 pushes the rotating block 4 in the first rotation position to rotate clockwise by a second angle and then stop in another U-shaped groove 41. At this time, the rotating block 4 is in the second rotation position. Under the action of the axial force of the spring 3, the rotating block 4 and the push core 5 are stopped to fix the position of the pen core 2, so that the pen tip is exposed, and the push pen is in the writing state.

[0045] During the process of switching the pressing pen from the writing state to the retracted state: when pressed down again, the second protrusion 522 pushes the rotating block 4 in the second rotation position to rotate clockwise to a third angle, and the second protrusion 522 cooperates with the first protrusion 521 to stop on the rotating block 4, and the pressing core 5 is limited by the rotating block 4 and cannot move further downward. At this time, the rotating block 4 is in the third rotation position; when rebounding, the third protrusion 523 pushes the rotating block 4 in the third rotation position to rotate to a fourth angle and then return to the guide area 51, so that the pressing pen is reset and is in the retracted state.

[0046] The present invention adopts this technical solution. When the top cap 8 is pressed, relative movement occurs between the press core 5 and the rotating block 4. The press core 5 moves up and down along the axis of the pen shaft 1, controlling the rotating block 4 to rotate and slide relatively linearly in a slide groove surrounded by the ribs on the vertical surface 53 of the press core 5, so as to realize the switching of the press pen between the writing state and the retracted state. This structure greatly reduces the noise during pressing, and the sound of the pressing mechanism is almost inaudible to the human ear, making it more suitable for students to use pens.

[0047] Among them, the first protrusion 521, the second protrusion 522 and the third protrusion 523 are all corresponding sections on the rib. The shape of the rib is roughly similar to the inverted "convex" shape, which includes the first vertical section 511, the second vertical section 512, the third vertical section 525, the fourth vertical section 526 and the transverse section. The first vertical section 511 and the second vertical section 512 are arranged in parallel and spaced apart, and the guide area 51 is formed between the first vertical section 511 and the second vertical section 512. The third vertical section 525 and the fourth vertical section 526 are arranged in parallel and spaced apart, and the third vertical section 525 and the fourth vertical section 526 are respectively located on both sides of the vertically extended line of the first vertical section 511 and the second vertical section 512; the third vertical section 525 and the fourth vertical section 526 cooperate with the first protrusion 521, the second protrusion 522 and the third protrusion 523 to enclose the rotation area 52.

[0048] like Figure 4 As shown, the third protrusion 523 is a straight corner section, connected between the first vertical section 511 and the third vertical section 525, and the third protrusion 523 can be specifically regarded as being formed by vertically bending the upper end of the first vertical section 511 in a direction opposite to the second vertical section 512. In addition, the upper end of the second vertical section 512 extends obliquely upward in a direction opposite to the first vertical section 511 to form an arc section 513, which is horizontally opposite to the third protrusion 523. The arc section 513 is used to guide the transition process of the rotating block 4 during the rotation of the fourth angle, so that the rotating block 4 smoothly returns to the guide area 51.

[0049] Furthermore, the transverse section is divided in the middle to form a first protrusion 521, a second protrusion 522, and a avoidance area 524 between the first protrusion 521 and the second protrusion 522. The first protrusion 521 is vertically connected to the upper end of the third vertical section 525, and the bottom of the first protrusion 521 is a horizontal plane. The avoidance area 524 is used to avoid the sharp corner on the rotating block 4 when rotating the first angle. The second protrusion 522 is connected to the upper end of the fourth vertical section 526, and the bottom of the second protrusion 522 is provided with an inclined surface 5221, and the inclined surface 5221 is inclined downwardly at one end close to the avoidance area 524, and the end of the inclined surface 5221 is lower than the plane of the bottom of the first protrusion 521.

[0050] See also Figures 7 to 9 The rotating block 4 is rectangular, with two wide faces and two long faces, the two long faces are the first long face 45 and the second long face 46, a U-shaped groove 41 is provided on the wide face, and a first dovetail portion 42 and a second dovetail portion 43 are formed at both ends of the U-shaped groove 41, and the first dovetail portion 42 and the second dovetail portion 43 have two sharp corners. A circular turntable 44 is provided on the side of the rotating block 4 facing away from the pressing core 5. The pressing mechanism also includes a positioning plate 6 fixed in the pen body 1, and a circular positioning groove 61 is provided on the side of the positioning plate 6 facing the pressing core 5, and the turntable 44 is rotatably arranged in the positioning groove 61, thereby limiting the rotating block 4 to only be able to rotate around its own central axis.

[0051] It is worth mentioning that the positioning groove 61 is provided with a cross-shaped convex rib 611 at the bottom of the groove and an arc-shaped convex rib 611 is provided at intervals on the inner peripheral wall. Due to the ingenious design of the convex rib 611, when the turntable 44 of the rotating block 4 is loosely fitted in the positioning groove 61 on the positioning plate 6, pressing the top cap 8 causes the pressing core 5 to move axially, driving the rotating block 4 to rotate and slide relative to the slide groove, so that the contact area between the two parts is reduced to a minimum, the friction is greatly reduced, and the noise is extremely low.

[0052] See also Figure 2 , Figure 6 and Figure 8 In order to realize the installation and positioning of the positioning plate 6, the shape of the positioning plate 6 in this embodiment is designed to be an arc-shaped sheet structure with the same center as the inner surface of the pen holder 1, and a vertical surface is cut out in the middle of the inner side surface of the positioning plate 6 along the vertical direction. The vertical surface is opposite to the ribs on the pressing core 5 and has a clearance fit, and the positioning groove 61 is located on the vertical surface. The inner wall of the pen holder 1 is radially recessed to form a clearance groove 101 that is similar to the positioning plate 6. The bottom of the clearance groove 101 is formed with a step. The positioning plate 6 is inserted into the clearance groove 101, and the lower end surface of the positioning plate 6 is limited on the step at the bottom of the clearance groove 101; at the same time, the inner surface of the positioning plate 6 and the outer surface of part of the pressing core 5 have a certain small gap between each other and are concentrically matched; the upper end of the pen holder 1 is fixedly installed with an annular upper cover 7, and the lower end surface of the upper cover 7 is pressed tightly on the upper end surface of the positioning plate 6, so that the positioning plate 6 is positioned in both the circumferential direction and the axial direction.

[0053] The upper cover 7 is fixedly installed by interference fit of the annular ribs arranged on the outer circumference of the upper cover 7 with the annular ribs arranged on the inner circumference of the pen barrel 1. In addition, a pen clip 9 is integrally injection-molded on the upper cover 7, and the pen clip 9 is located on the outer side of the upper end of the pen barrel 1; the upper cover 7 and the pen clip 9 are integrally connected through a radial protrusion, and a notch is arranged on the top of the pen barrel 1, and the radial protrusion is stuck in the notch to position the upper cover 7 circumferentially.

[0054] When the push pen is in the retracted state, under the elastic force of the spring 3, the upper end surface of the main body of the push core 5 stops upward on the lower end surface of the upper cover 7. The push rod 54 of the push core 5 extends upward through the upper cover 7, and the top cap 8 is fixedly sleeved on the upper end of the push rod 54, and at least part of the outer circumference of the lower end of the top cap 8 is concentrically matched with the inner circumference of the upper cover 7.

[0055] See also Figure 5 and Figure 6 The outer side surface of the main body of the push core 5 is also provided with a rectangular limiting rib 55 along the axial direction. The inner wall of the pen body 1 is radially recessed to form a rectangular limiting groove 102 with a certain depth. The limiting rib 55 is slidably fitted in the limiting groove 102 to realize the circumferential positioning of the push core 5 and play a guiding role. When the top cap 8 is pressed, the push core 5 can move up and down along the axial direction, thereby controlling the two movement states of extension and retraction of the pen core 2.

[0056] The working principle of the extremely low noise click pen of the present invention is as follows.

[0057] Press the pen to switch from the indented state to the writing state:

[0058] When the pen is in the retracted state, the pen core 2 is in the retracted pen holder 1, the rotating block 4 is located in the guide area 51, the notch of the first dovetail portion 42 is distributed upward, and the sharp corners of the first dovetail portion 42 (with Fig.10 (a) is a reference, and the sharp corner 2 refers to a sharp corner on the right side of the first dovetail portion 42) and the projection along the vertical direction can fall on the inclined surface 5221, such as Fig.10 As shown in (a). When the finger presses down the top cap 8, the pressing core 5 and the pen core 2 are pushed downward synchronously, so that the spring 3 is compressed; during the initial downward movement of the pressing core 5, the rotating block 4 is translated from the guide area 51 to the rotating area 52 relative to the pressing core 5, and the rotating block 4 does not rotate during this process; until the inclined surface 5221 of the second protrusion 522 contacts the sharp corner 2 of the first dovetail portion 42 of the rotating block 4, the pressing core 5 continues to move downward for a short distance, and the inclined surface 5221 of the second protrusion 522 pushes the rotating block 4 to rotate clockwise by the first angle and forms a stop with a U-shaped groove 41 on the upper side, and the pressing core 5 is limited by the rotating block 4 and cannot continue to move downward. At this time, the rotating block 4 is in the first rotation position, and the sharp corner 1 (with the first dovetail portion 42) of the first dovetail portion 42 is at the first rotation position. Fig.10 (a) is used as a reference, the sharp corner 1 refers to a sharp corner on the left side of the first dovetail portion 42) is in the avoidance area 524, and the sharp corner 3 of the second dovetail portion 43 (with Fig.10 (a) is a reference, and the sharp corner 3 refers to a sharp corner on the left side of the second dovetail portion 43. The projection along the vertical direction falls on the third protrusion 523, as shown in FIG. Fig.10After the top cap 8 is loosened, the spring 3 pushes the press core 5 upward for a short distance through the pen core 2 under the elastic force of the spring 3. After the third protrusion 523 contacts the sharp corner 3 of the second dovetail portion 43, the third protrusion 523 pushes the rotating block 4 in the first rotation position to rotate clockwise by a second angle and forms a locking with a U-shaped groove 41 on the lower side. At this time, the rotating block 4 is in the second rotation position, and the projection of the sharp corner 1 of the first dovetail portion 42 in the vertical direction can fall on the inclined surface 5221, and the sharp corner 2 of the first dovetail portion 42 is locked on the arc segment 513, as shown in FIG. Fig.10 As shown in (c), under the action of the axial force of the spring 3, the rotating block 4 and the pressing core 5 are locked to fix the position of the pen core 2, so that the pen tip is exposed and the pressing pen is in a writing state.

[0059] Press the pen to switch from writing mode to indentation mode:

[0060] When the top cap 8 is pressed downward again, the pressing core 5 and the pen core 2 are simultaneously pushed downward again, so that the spring 3 is compressed; through the cooperation of the sharp corner 1 of the first dovetail portion 42 and the inclined surface 5221 of the second protrusion 522, and the cooperation of the tip of the second protrusion 522 and the first long surface 45 of the rotating block 4, during the downward movement of the pressing core 5, the rotating block 4 in the second rotation position can be forced to rotate clockwise by a third angle through the second protrusion 522, until the sharp corner 3 of the second dovetail portion 43 contacts the first protrusion 521, and the pressing core 5 is limited by the rotating block 4 and cannot continue to move downward. At this time, the rotating block 4 is in the third rotation position, as shown in FIG. Fig.11 After the top cap 8 is loosened, the spring 3 pushes the pressing core 5 upward for a short distance through the pen core 2, until the third protrusion 523 contacts the second long surface 46 of the rotating block 4 (as shown in FIG. Fig.11 As shown in (e), during the next upward movement of the pressing core 5, the third protrusion 523 will push the rotating block 4 at the third rotation position to rotate, and after the guiding transition of the arc section 513, it will smoothly return to the guiding area 51, as shown in FIG. Fig.11 As shown in (f), the pressing pen is finally reset to the retracted state.

[0061] It can be seen that the ultra-low noise push pen of the present invention has made structural innovations on the relevant parts in the traditional push mechanism. A slide groove surrounded by ribs is designed on the vertical surface 53 of the push core 5. The rotating block 4 has an appearance structure with U-shaped grooves 41 symmetrically provided at both ends. The rotating block 4 can rotate and slide relatively in the slide groove. When the push core 5 slides up and down, the protrusions on the ribs are used to force the rotating block 4 to rotate and form a stop, so as to realize the switching of the push pen between the writing state and the retracted state. This technology breaks through the traditional thinking mode and structural mode, subverts the structural form of the push mechanism throughout history, and improves the technical level and innovation ability of this industry. When pressing, no "click" noise will be emitted due to the rapid collision of parts. The sound can be reduced by 90% to 95% compared with the traditional one. It is convenient, practical, natural, comfortable and humanized when pressing, giving people a novel and beautiful enjoyment. At the same time, the structure is simple and compact, easy to assemble, easy to process, low cost, and suitable for mass production.

[0062] Many specific details are described in the above description to facilitate a full understanding of the present invention. However, the above description is only a preferred embodiment of the present invention. The present invention can be implemented in many other ways different from those described herein, so the present invention is not limited to the specific implementation disclosed above. At the same time, any person familiar with the art can make many possible changes and modifications to the technical solution of the present invention using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

Claims

1. An extremely low noise push pen, comprising a pen holder (1), a pen core (2), a spring (3) and a push mechanism installed in the pen holder (1), wherein the push mechanism is used to cooperate with the spring (3) to drive the pen core (2) to move along the axis direction of the pen holder (1) when pushed, so that the push pen switches between a writing state and a retracted state; characterized in that: The pressing mechanism comprises: A rotating block (4) configured to be capable of rotating only around its own central axis within the pen holder (1), wherein two U-shaped grooves (41) are symmetrically provided at both ends of the rotating block (4); and a pressing core (5) configured to be able to slide only in the pen holder (1) along the axial direction of the pen holder (1), the outer side surface of the pressing core (5) being provided with a slide groove along the sliding direction, the rotating block (4) being located in the slide groove; the slide groove comprising a guide area (51) and a rotating area (52) located at the top of the guiding area (51) and connected to each other, the pressing core (5) being able to make the rotating block (4) switch between the guiding area (51) and the rotating area (52) when sliding; a first protrusion (521) and a second protrusion (522) located at one side of the first protrusion (521) being provided at the top of the rotating area (52), and a bottom end of the second protrusion (522) being lower than the bottom end of the first protrusion (521), and a third protrusion (523) being located below the first protrusion (521) being provided at the bottom of the rotating area (52); When the press pen switches from the retracted state to the writing state: the second protrusion (522) is used to push the rotating block (4) to rotate to a first angle and then be locked in one of the U-shaped grooves (41), so that the rotating block (4) is in a first rotation position; the third protrusion (523) is used to push the rotating block (4) in the first rotation position to rotate to a second angle and then be locked in another of the U-shaped grooves (41), so that the rotating block (4) is in a second rotation position, and the press pen is in the writing state at this time; During the process of switching the push pen from the writing state to the retracted state: the second protrusion (522) is used to push the rotating block (4) at the second rotation position to rotate to a third angle and cooperate with the first protrusion (521) to stop on the rotating block (4), so that the rotating block (4) is at the third rotation position; the third protrusion (523) is used to push the rotating block (4) at the third rotation position to rotate to a fourth angle and return to the guide area (51), at which time the push pen is in the retracted state.

2. The ultra-low noise click pen according to claim 1, characterized in that: The outer side of the pressing core (5) has a vertical surface (53), the sliding groove is surrounded by ribs arranged on the vertical surface (53), and the first protrusion (521), the second protrusion (522) and the third protrusion (523) are all corresponding sections on the ribs.

3. The ultra-low noise click pen according to claim 2, characterized in that: The rib comprises a first vertical section (511) and a second vertical section (512) which are spaced apart from each other, and the guide area (51) is formed between the first vertical section (511) and the second vertical section (512); the third protrusion (523) is formed by bending the upper end of the first vertical section (511) in a direction away from the second vertical section (512), and the upper end of the second vertical section (512) extends obliquely upward to form an arc section (513) which is horizontally opposite to the third protrusion (523).

4. The ultra-low noise click pen according to claim 2, characterized in that: The rib comprises a transverse section, which is divided in the middle to form the first protrusion (521), the second protrusion (522), and an avoidance area (524) between the first protrusion (521) and the second protrusion (522), and a slope (5221) is provided at the bottom of the second protrusion (522), and the slope (5221) is arranged to be inclined downward close to one end of the avoidance area (524).

5. The ultra-low noise click pen according to claim 4, characterized in that: The rotating block (4) is rectangular, and is provided with the U-shaped groove (41) at two ends thereof, which are respectively a first dovetail portion (42) and a second dovetail portion (43), and the first dovetail portion (42) and the second dovetail portion (43) both have two sharp corners; When the push pen is in a retracted state, the rotating block (4) is located in the guide area (51), the notches of the first dovetail portion (42) are distributed upward, and the projection of one of the sharp corners of the first dovetail portion (42) in the vertical direction can fall on the inclined surface (5221); When the push pen is in a writing state, the projection of another sharp corner of the first dovetail portion (42) along the vertical direction can fall on the inclined surface (5221).

6. The ultra-low noise click pen according to claim 1, characterized in that: The pressing mechanism further comprises a positioning plate (6) fixed in the pen holder (1), a positioning groove (61) being provided on the side of the positioning plate (6) facing the pressing core (5), and a rotating disk (44) being provided on the side of the rotating block (4) facing away from the pressing core (5), and the rotating disk (44) being rotatably arranged in the positioning groove (61).

7. The ultra-low noise click pen according to claim 6, characterized in that: The positioning groove (61) is provided with convex ribs (611) on its groove bottom and inner peripheral wall.

8. The ultra-low noise click pen according to claim 6, characterized in that: The inner wall of the pen holder (1) is recessed radially to form a clearance groove (101), the positioning plate (6) is inserted into the clearance groove (101), and an upper cover (7) is fixedly mounted on the upper end of the pen holder (1), and the upper cover (7) is pressed tightly against the top of the positioning plate (6).

9. The ultra-low noise click pen according to claim 8, characterized in that: A push rod portion (54) is provided at the top of the pressing core (5), and the push rod portion (54) passes through the upper cover (7) and extends upward, and a top cap (8) is fixedly mounted on the upper end of the push rod portion (54).

10. The ultra-low noise click pen according to claim 1, characterized in that: The outer side surface of the pressing core (5) is provided with a limiting rib (55) along the axial direction, and the inner wall of the pen holder (1) is recessed in the radial direction to form a limiting groove (102), and the limiting rib (55) is slidably fitted in the limiting groove (102).

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