Push-button pen

Abstract

The utility model discloses a push button type pen utensil, including pen holder, pen core, spring, push button, jacks, spring abuts between pen core and pen holder, and jacks are supported with pen core rear end cooperation, and push button is movably arranged in pen holder side part, be provided with movable sleeve in the pen holder, movable sleeve and push button fixed connection, the jacks are arranged in the inner hole of movable sleeve, the jacks include limit groove, the inner hole of movable sleeve is fixed with movable block, movable block is movably arranged in limit groove, the rear end of jacks includes elastic clamping arm, and the end of elastic clamping arm is inclined to the side direction of pen and is arranged, the side wall of pen holder inner hole is provided with limit portion, and the rear end of movable sleeve and elastic clamping arm constitute push cooperation. The utility model discloses push button type pen has simple structure, low noise, and the advantage that the precision cooperation requirement of low between parts is required.

Description

Technical Field

[0001] This utility model relates to a push-button pen. Background Technology

[0002] Existing retractable pens, such as push-button ballpoint pens, typically employ a ratchet-equipped push-button mechanism to extend and retract the refill. This mechanism is usually quite complex, including a push rod, a turntable, and a groove inside the pen barrel. The rear end of the push rod abuts against the front end of the button. The turntable is located at the rear end of the refill and pushes against the front end of the push rod. The turntable can rotate and engage or disengage axially with the groove. When the button is pressed, the push rod moves forward along the groove. When the turntable disengages from the groove, the force generated by the pointed tip of the push rod contacting the inclined surface of the turntable causes it to rotate. The limiting engagement between the turntable and the front of the groove holds the refill in the extended position. When the button is pressed again, the turntable rotates again, disengaging the limiting engagement. A spring then drives the turntable backward along the groove, allowing the refill to retract back into the pen barrel. Therefore, by alternately pressing and releasing the button, you can switch the direction of the pen tip extending forward or retracting from the lead hole.

[0003] The press mechanism of the above-mentioned pen has a relatively complex structure and many parts. It requires a certain degree of precision in the matching between the parts, and the mechanical impact is obvious and loud when pressed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a push-button pen with a simple structure, low noise, and lower requirements for the precision matching between components.

[0005] This utility model discloses a push-button type pen, comprising a pen barrel, a pen refill, a spring, a push button, and a push rod. The spring abuts against the pen refill and the pen barrel and drives the pen refill to return to its original position. The push rod supports the rear end of the pen refill. The push button is movably disposed on the side of the pen barrel. A movable sleeve is disposed inside the pen barrel, and the movable sleeve is fixedly connected to the push button. The push button can push the movable sleeve to move in the front-back direction. The push rod is disposed in the inner hole of the movable sleeve and can move relative to the front-back direction of the movable sleeve. The push rod includes a limiting groove extending in the front-back direction. A movable block is fixed in the inner hole of the movable sleeve. The movable block is movably disposed in the limiting groove. The rear end of the push rod includes an elastic locking arm. The end of the elastic locking arm is inclined toward one side of the pen. A limiting part is provided on one side wall of the inner hole of the pen barrel to abut against the end of the elastic locking arm to prevent the push rod from moving backward. The rear end of the movable sleeve and the elastic locking arm form a pushing fit. When the movable sleeve moves backward relative to the push rod, it can drive the end of the elastic locking arm to deform and swing in the other direction and release the limiting fit with the limiting part.

[0006] The working principle of this utility model is as follows: When using the pen, push the button forward, which will cause the movable sleeve to move forward. When the movable sleeve moves forward, the movable block in the inner hole of the movable sleeve moves to the front end of the limiting groove and forms a limiting engagement with the top rod, thereby causing the top rod to move forward and thus causing the pen refill to extend forward. Since the end of the elastic locking arm of the top rod is inclined to one side of the pen, it forms a limiting engagement with the limiting part when it moves to the limiting part, preventing the top rod from retracting and keeping the pen refill in the extended state for easy writing. When not using the pen, push the button backward, which will cause the movable sleeve to move backward. When the movable sleeve moves backward, its rear end drives the end of the elastic locking arm to deform and swing to the other side and release the limiting engagement with the limiting part, allowing the top rod to return to its original position and the pen refill to retract.

[0007] In this invention, the structure used to realize the pen retraction function is simple in structure and has fewer parts compared with the prior art. Since it does not have a ratchet structure, the precision requirements for the fit between the parts are relatively low, and the noise during the pen retraction process is also relatively smaller.

[0008] Furthermore, the push button includes an operating part located on the outside of the pen barrel, a connecting rod passing through the inside of the pen barrel, and a connecting part connecting the operating part and the connecting rod. A sliding groove is provided on the side of the pen barrel, and the connecting part slides into the sliding groove. The connecting rod is inserted into and fixed to the movable sleeve. The structure is simple; the connecting part and connecting rod of the push button can be inserted along the sliding groove from the outside of the pen barrel and fixed to the movable sleeve. The structure is simple and easy to install. The sliding fit between the connecting part and the sliding groove prevents the push button from moving circumferentially along the pen.

[0009] Furthermore, the connecting rod is fixed inside the inner hole of the movable sleeve, and the movable block is formed by the portion of the connecting rod that passes through the inner hole of the movable sleeve. This further simplifies the structure, reduces the number of parts, and facilitates assembly.

[0010] Furthermore, a notch is provided on the side of the operating part corresponding to the pen barrel, and the side of the pen barrel is inserted into the notch. This makes the connection between the push button and the pen barrel more compact and aesthetically pleasing.

[0011] Furthermore, the pen barrel includes a cylindrical portion and an end cap connected to the rear end of the cylindrical portion. The end cap includes a cylindrical insertion portion, which is inserted and fixed into the opening at the rear end of the cylindrical portion. One side of the insertion portion has a window for the lateral insertion of the end of the elastic retaining arm. The limiting portion is formed by the front end of the insertion portion. The window provides clearance, preventing the elastic retaining arm from being under pressure and deformed for extended periods when the pen is in the retracted state. This reduces wear and fatigue damage to the end of the elastic retaining arm, improving its durability. Additionally, it facilitates the manufacturing of the limiting portion within the pen barrel's inner hole, integrating the limiting portion onto the end cap and configuring it within the pen barrel's inner hole through an insertion-fit assembly with the cylindrical portion.

[0012] Furthermore, the front end of the elastic locking arm has an inclined surface that contacts and engages with the front edge of the window and the rear end of the movable sleeve, while the rear end of the elastic locking arm has a transverse plane that abuts and limits the engagement with the front end of the insertion part. When the elastic locking arm moves forward, its inclined surface abuts and engages with the front edge of the window, causing the end of the elastic locking arm to deform and bend towards the other side, facilitating its passage over the front edge of the window. Additionally, when the movable sleeve moves backward, it can improve its disengagement from the limiting part by abutting with the inclined surface. The transverse plane on the rear end of the elastic locking arm enhances the abutment and limiting effect with the front end of the insertion part, preventing the pen tip from retracting under pressure during writing.

[0013] Furthermore, the push button is a pen clip, allowing the pen to be clipped to books, clothing, or other objects for easy carrying. Attached Figure Description

[0014] Figure 1 This is a structural diagram of an embodiment of the present utility model; Figure 2 This is an exploded view of the structure of an embodiment of the present utility model; Figure 3 This is a cross-sectional view of the core-shrinking state in an embodiment of the present invention. Figure 1 ; Figure 4 This is a cross-sectional view of the core-shrinking state in an embodiment of the present invention. Figure 2 (and Figure 3 (The cross-sections are perpendicular to each other). Figure 5 for Figure 4 A schematic diagram of the core-out state; Figure 6 This is a structural diagram of the push button according to an embodiment of the present utility model; Figure 7 This is a structural diagram of the end cap according to an embodiment of the present utility model; Figure 8 This is a structural diagram of the top rod according to an embodiment of the present utility model; Figure 9This is a structural diagram of the movable sleeve in an embodiment of the present utility model. Detailed Implementation

[0015] In the directional terminology used in this utility model, "front" or "forward" indicates the direction of the pen tip, and "back" or "rear" indicates the direction of the pen tail.

[0016] An embodiment of this utility model of a push-button pen, such as... Figures 1 to 9 As shown, the device includes a pen barrel 1, a pen refill 2, a spring 3, a push button 4, and a push rod 5. The spring 3 abuts between the pen refill 2 and the pen barrel 1 and drives the pen refill 2 to return to its original position. The push rod 5 supports the rear end of the pen refill 2, and the elastic force of the spring 3 keeps the rear end of the pen refill 2 pressed against the front end of the push rod 5. The push button 4 is movably disposed on the side of the pen barrel 1. A movable sleeve 6 is disposed inside the pen barrel 1. The movable sleeve 6 and the push button 4 are fixedly connected. The push button 4 can push the movable sleeve 6 to move in the front-back direction. The push rod 5 is disposed in the inner hole of the movable sleeve 6 and can move relative to the movable sleeve 6 in the front-back direction. The push rod 5 includes a limiting element extending in the front-back direction. The movable sleeve 6 has a movable block fixed in its inner hole. The movable block is movably disposed in the limiting groove 51 and moves within the range of front and rear restricted by the limiting groove 51. The rear end of the push rod 5 includes an elastic locking arm 52. The end of the elastic locking arm 52 is inclined toward one side of the pen. A limiting part is provided on one side wall of the inner hole of the pen barrel 1 to abut against the end of the elastic locking arm 52 to prevent the push rod 5 from moving backward. The rear end of the movable sleeve 6 and the elastic locking arm 52 form a pushing fit. When the movable sleeve 6 moves backward relative to the push rod 5, it can drive the end of the elastic locking arm 52 to deform and swing in the other direction and release the limiting fit with the limiting part.

[0017] The push button 4 includes an operating part 41 located on the outside of the pen barrel 1, a connecting rod 42 passing through the inside of the pen barrel 1, and a connecting part 43 connecting the operating part 41 and the connecting rod 42. The pen barrel 1 includes a cylindrical portion 11 and an end cap 12 connected to the rear end of the cylindrical portion 11. A sliding groove 10 is provided on the side of the cylindrical portion 11. The connecting part 43 is slidably engaged with the sliding groove 10, and the connecting rod 42 is inserted and fixedly connected with the movable sleeve 6. The structure is simple. The connecting part 43 of the push button 4 can be inserted into the sliding groove 10 from the outside of the cylindrical portion 11 for assembly. The connecting rod 42 can be inserted into the sliding groove 10 from the outside of the cylindrical portion 11 and assembled with the movable sleeve 6. The structure is simple and easy to install. The connecting part 43 and the sliding groove 10 form a sliding engagement. The connecting part 43 can only slide in the front-back direction of the sliding groove 10, which can prevent the push button 4 from moving around the circumference of the pen.

[0018] like Figures 3 to 5As shown, the connecting rod 42 is horizontally inserted and fixed in the inner hole of the movable sleeve 6, and is engaged and fixed with the two side walls of the inner hole of the movable sleeve 6. The movable block is composed of the part of the connecting rod 42 that passes through the inner hole of the movable sleeve 6, which can further simplify the structure, reduce the number of parts, and facilitate assembly. During assembly, the top rod 5 is first inserted into the inner hole of the movable sleeve 6, and then the connecting rod 42 is simultaneously inserted into the inner hole of the movable sleeve 6 and the limiting groove 51 of the top rod 5 to achieve assembly.

[0019] The operating part 41 has a notch 411 on the side corresponding to the pen barrel 1. The side of the pen barrel 1 is inserted into the notch 411. The shape of the notch 411 is adapted to the shape of the side of the pen barrel 1, so that a part of the pen barrel 1 can be inserted into the notch 411, making the connection between the push button 4 and the pen barrel 1 more compact and aesthetically pleasing.

[0020] like Figures 2 to 5 as well as Figure 7 As shown, the end cap 12 includes a cylindrical insertion portion 121, which is inserted and fixed in the rear end opening of the cylindrical portion 11. One side of the insertion portion 121 has a window 122 for laterally inserting the end of the elastic retaining arm 52. The limiting portion is formed by the front end of the insertion portion 121, specifically by the leading edge 122a of the window 122. The window 122 provides clearance, allowing the elastic retaining arm 52 to return to its original state when the pen is in the retracted state, preventing it from being under pressure and deformation for extended periods. This reduces wear on the end of the elastic retaining arm 52 and fatigue damage, improving its durability. Furthermore, it facilitates the manufacturing of the limiting portion within the inner hole of the pen barrel 1, integrating the limiting portion onto the end cap 12 and configuring it within the inner hole of the pen barrel 1 through an insertion assembly with the cylindrical portion 11.

[0021] like Figure 8 As shown, the front end of the elastic locking arm 52 has an inclined surface 521 that contacts and engages with the front edge of the window 122 and the rear end of the movable sleeve 6. When the elastic locking arm 52 moves forward, its inclined surface 521 abuts against the front edge of the window 122, causing the end of the elastic locking arm 52 to deform and bend towards the other side, facilitating its passage over the front edge of the window 122. Furthermore, when the movable sleeve 6 moves backward, it can improve its disengagement from the limiting part by abutting against the inclined surface 521. The rear end of the elastic locking arm 52 has a horizontal plane 522 that abuts against and limits the limiting part. The horizontal plane 522 on the rear end of the elastic locking arm 52 improves the abutment and limiting effect with the front end of the insertion part 121, preventing the pen refill 2 from retracting under force during writing.

[0022] In other embodiments, the push button 4 can also be a pen clip, so that the push button 4 has a pen clip function, allowing the pen to be clipped to books, clothing or other objects, making it convenient to carry the pen.

[0023] The working principle of this utility model is as follows: the pen is initially in the retracted core state as follows: Figure 3 , Figure 4 As shown, when the pen is needed, push button 4 is pushed forward towards the pen. Push button 4 will drive the movable sleeve 6 forward. When the movable sleeve 6 moves forward, the movable block in the inner hole of the movable sleeve 6 moves to the front end of the limiting groove 51 and forms a limiting engagement with the push rod 5, thereby driving the push rod 5 forward. The inclined surface 521 at the end of the elastic locking arm 52 and the front edge 122a engage to cause the elastic locking arm 52 to deform and bend in the other direction, so that the end of the elastic locking arm 52 can move forward past the front edge 122a and disengage from the window 122. At the same time, the push rod 5 moves forward and drives the pen refill 2 to extend outward from the front end of the pen barrel 1. When push button 4 is released, the push rod 5 retracts under the action of spring 3. The horizontal plane 522 at the end of the elastic locking arm 52 and the front side of the front edge 122a abut against each other and form a limiting engagement. The push rod 5 supports the pen refill 2, thereby keeping the pen refill 2 in the extended state and preventing it from retracting when writing. Figure 5 The state shown; When not using the pen, push the button 4 toward the back of the pen. The button 4 will cause the movable sleeve 6 to move backward. When the movable sleeve 6 moves backward, its rear end contacts the inclined surface 521 and drives the end of the elastic locking arm 52 to deform and swing to the other side, so that the end of the elastic locking arm 52 can move backward past the leading edge 122a and be repositioned into the window 122, thereby realizing the retraction of the pen refill 2.

[0024] The above embodiments are merely one preferred embodiment of the present utility model. Ordinary changes and substitutions made by those skilled in the art within the scope of the present utility model's technical solution are all included within the protection scope of the present utility model.

Claims

1. A push-button type pen, comprising a pen barrel, a pen refill, a spring, a push button, and a push rod, wherein the spring abuts against the pen refill and the pen barrel and is used to drive the pen refill to move backward to reset, the push rod is supported and engaged with the rear end of the pen refill, and the push button is movably disposed on the side of the pen barrel, characterized in that: The pen barrel contains a movable sleeve, which is fixedly connected to a push button. The push button can push the movable sleeve to move in the front-back direction. A push rod is disposed in the inner hole of the movable sleeve and can move relative to the front-back direction of the movable sleeve. The push rod includes a limiting groove extending in the front-back direction. A movable block is fixed in the inner hole of the movable sleeve and is movably disposed in the limiting groove. The rear end of the push rod includes an elastic locking arm, the end of which is inclined toward one side of the pen. A limiting part is provided on one side wall of the inner hole of the pen barrel to abut against the end of the elastic locking arm to prevent the push rod from moving backward. The rear end of the movable sleeve and the elastic locking arm form a pushing fit. When the movable sleeve moves backward relative to the push rod, it can drive the end of the elastic locking arm to deform and swing in the other direction and release the limiting fit with the limiting part.

2. The push-button pen according to claim 1, characterized in that: The push button includes an operating part located on the outside of the pen barrel, a connecting rod passing through the inside of the pen barrel, and a connecting part connecting the operating part and the connecting rod. A sliding groove is provided on the side of the pen barrel, the connecting part slides in the sliding groove, and the connecting rod is inserted and fixed in place with the movable sleeve.

3. The push-button pen according to claim 2, characterized in that: The connecting rod is inserted and fixed in the inner hole of the movable sleeve, and the movable block is composed of the part of the connecting rod inserted in the inner hole of the movable sleeve.

4. The push-button pen according to claim 2, characterized in that: The operating part has a notch on the side corresponding to the pen barrel, and the side of the pen barrel is inserted into the notch.

5. The push-button pen according to claim 1, characterized in that: The pen barrel includes a cylindrical part and an end cap connected to the rear end of the cylindrical part. The end cap includes a cylindrical insertion part, which is inserted and fixed in the opening at the rear end of the cylindrical part. One side of the insertion part is provided with a window for the end of an elastic locking arm to be inserted laterally. The limiting part is formed by the front end of the insertion part.

6. The push-button pen according to claim 5, characterized in that: The front end of the elastic locking arm has an inclined surface that contacts and engages with the front edge of the window and the rear end of the movable sleeve, and the rear end of the elastic locking arm has a horizontal plane that abuts and limits the engagement with the front end of the insertion part.

7. The push-button pen according to claim 1, characterized in that: The push button is a pen clip.

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