Light-tone push-pull pen

Abstract

The utility model discloses a gentle-tone push-pull pen which comprises a pen shell, a pen sleeve and a pen core, the pen sleeve and the pen shell are arranged in an axially movable and telescopic mode, the pen core is located in an inner cavity formed by the pen shell and the pen sleeve, the front end of the pen core and the inner wall of the pen shell are connected with a push-pull spring in an abutting mode, and the push-pull spring is used for elastically driving the pen core to move towards the direction of the pen sleeve. The rear end of the refill abuts against an inner rod, the other end of the inner rod is inserted into the pen cap, the inner rod is sleeved with an outer tooth sleeve, the outer tooth sleeve is further sleeved with an inner tooth sleeve, and mold teeth of the outer tooth sleeve and mold teeth of the inner tooth sleeve are oppositely arranged. The gentle-tone push-pull pen has gentle and mute effects, the collision sound generated between parts when a conventional pressing telescopic pen in the prior art switches the telescopic use state of the pen core and the positioning state of the internal pressing part is eliminated, and the pressing part is improved, so that the gentle-tone push-pull pen is simple in structure and convenient to implement and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of push-pull pens, in particular to a low-noise push-pull pen. Background Art

[0002] The click-wheel structure of the click pen has a click wheel, a rotating wheel and ribs and grooves arranged on the inner wall of the container where the click wheel and the rotating wheel are located (such as the inner wall of the pen barrel or the inner wall of the bushing added to the pen barrel) for allowing the click wheel and the rotating wheel to move up and down and control their rotation as structural elements. It is flexible to press, has a good hand feel and is easy to use, and is therefore deeply loved by people. However, the click-wheel structure of the existing click-type (press-type) retractable pen will emit a "click" sound when it is turned and the sound of an instantaneous collision is emitted after the rotation is completed, which affects others in a quiet environment.

[0003] There are structures with similar effects in the prior art, but they are similar and have certain noise defects. In some important occasions or relatively quiet occasions, noise will be generated when using such pens, which cannot meet the silent requirements. Utility Model Content

[0004] In view of the prior art, the purpose of the present invention is to provide a push-pull pen that can achieve quietness and low noise, and has a simple structure and is easy to produce and implement.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is: a low-noise push-pull pen, comprising a pen case, a pen cover and a pen core, the pen cover and the pen case are axially movable and telescopically arranged, the pen core is located in the inner cavity formed by the pen case and the pen cover, and its front end is in contact with the inner wall of the pen case with a push-pull spring, the push-pull spring is used to elastically drive the pen core to move toward the pen cover, the rear end of the pen core is in contact with an inner rod, the other end of the inner rod is inserted into the pen cover, an outer tooth sleeve is provided on the inner rod, an inner tooth sleeve is also provided outside the outer tooth sleeve, and the mold teeth of the outer tooth sleeve and the inner tooth sleeve are arranged relative to each other.

[0006] As a further arrangement of the above scheme, the mold teeth on the inner gear sleeve include upper ratchet teeth and lower ratchet teeth, and the upper ratchet teeth and lower ratchet teeth are respectively provided with several groups, and each upper ratchet tooth and lower ratchet tooth is a V-shaped notch with one side wall set as a vertical edge and the other side wall set with a spiral guide surface.

[0007] As a further configuration of the above solution, the spiral guide surfaces of the V-shaped notches of the upper ratchet and the lower ratchet are arranged in opposite directions, and the peaks and valleys of the V-shaped notches of the upper ratchet and the lower ratchet are staggered.

[0008] As a further arrangement of the above scheme, the mold teeth on the outer gear sleeve include several groups of upper wedge blocks and lower wedge blocks with their tips facing inward, and both the upper wedge blocks and the lower wedge blocks have sharp corners and beveled edges. The sharp corners of the upper wedge blocks and the lower wedge blocks are opposite, and the beveled edges are arranged in opposite directions.

[0009] As a further arrangement of the above scheme, the pen housing and the inner gear sleeve are fixedly connected, a limiting ring groove is provided on the part where the inner rod is inserted into the pen sleeve, and a limiting ring block is provided in the hole groove on the pen sleeve for inserting the inner rod.

[0010] As a further configuration of the above solution, the pen housing includes a pen tip housing, the pen tip housing is provided with an abutting end surface for a push-pull spring, and the pen tip housing is threadedly connected to the front end of the pen housing.

[0011] Beneficial effects: The silent push-pull pen of the utility model has a silent effect, eliminating the collision sound between the parts of the conventional press-telescopic pen in the prior art when switching the pen core to the telescopic use state and the internal pressing part to the positioning state. In addition, the pressing part is improved in this embodiment, with a simple structure, which is easy to implement and assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural diagram of the utility model's silent push-pull pen.

[0013] Figure 2 This is a schematic diagram of the internal structure of the silent push-pull pen of this embodiment.

[0014] Figure 3 This is a cross-sectional view of the interior of the silent push-pull pen of this embodiment.

[0015] Figure 4 This is a partially enlarged schematic diagram of the internal structure of the silent push-pull pen of this embodiment.

[0016] Figure 5 This is a schematic structural diagram of the inner and outer gear sleeves of the push-pull pen of this embodiment.

[0017] Figure numerals: 1, pen case; 10, nib case; 2, pen cover; 26, limiting ring groove; 27, limiting ring block; 3, pen core; 31, inner rod; 32, outer gear sleeve; 321, upper wedge block; 322, lower wedge block; 323, sharp corner; 324, bevel edge; 33, inner gear sleeve; 331, upper ratchet; 332, lower ratchet; 333, vertical edge; 334, spiral guide surface; 4, push-pull spring; 41, abutting end face. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0019] like Figure 1-5 A light-sound push-pull pen shown, Figure 1 The external appearance structure diagram is shown in Figure 2 Taking the exploded diagram of the internal components of the push-pull pen as an example, it includes a pen shell 1, a pen cover 2, a pen core 3, a push-pull spring 4 and a toothed pressing part, which comprehensively realize the telescopic switching.

[0020] The pen cover 2 and the pen shell 1 of this embodiment are axially movable and retractable based on the action of the push-pull spring 4, wherein the pen core 3 is located in the inner cavity formed by the pen shell 1 and the pen cover 2. Figure 3 As shown in the cross-sectional structure, the front end of the refill 3 abuts against the inner wall of the pen shell 1 with a push-pull spring 4, which is used to elastically drive the refill 3 to move toward the pen cover 2. The rear end of the refill 3 abuts against the inner rod 31, and the other end of the inner rod 31 is inserted into the pen cover 2. Figure 3 As shown, the plug-in part is provided with a limiting ring groove 26 and a limiting ring block 27 for connection, and an outer gear sleeve 32 is also sleeved on the inner rod 31, and an inner gear sleeve 33 is also sleeved outside the outer gear sleeve 32, and the mold teeth of the outer gear sleeve 32 and the inner gear sleeve 33 are arranged relative to each other.

[0021] Based on the above-mentioned structural arrangement, the push-pull pen housing 1 of this embodiment compresses the push-pull spring 4 under the action of an external force, thereby moving relative to the pen core 3 and the pen cap 2. The relative tail movable stroke is smaller than the compression stroke of the push-pull spring 4. After the external force is lost, the push-pull pen housing 1 extends due to the compression restoring force of the push-pull spring 4 and is limited by the movable position of the outer gear sleeve 32 on the inner gear sleeve 33. The extension stroke is limited, and based on the ratchet and wedge action of the two, the inclined plane is driven to generate circumferential movable rotation. The structural details are as follows:

[0022] As a further arrangement of the above scheme, the mold teeth on the inner gear sleeve 33 of this embodiment include upper ratchet teeth 331 and lower ratchet teeth 332, and the upper ratchet teeth 331 and the lower ratchet teeth 332 are respectively provided with several groups, and each upper ratchet tooth 331 and the lower ratchet tooth 332 are V-shaped notches, one side wall of which is set as a vertical edge 333, and the other side wall is set with a spiral guide surface 334, and the spiral guide surfaces 334 of the V-shaped notches of the upper ratchet teeth 331 and the lower ratchet teeth 332 are set in opposite directions, and the peaks and valleys of the V-shaped notches of the upper ratchet teeth 331 and the lower ratchet teeth 332 are staggered.

[0023] As a further configuration of the above scheme, the mold teeth on the outer gear sleeve 32 include several groups of upper wedge blocks 321 and lower wedge blocks 322 with their tips facing inward. Both the upper wedge blocks 321 and the lower wedge blocks 322 have sharp corners 323 and bevel edges 324. The sharp corners 323 of the upper wedge blocks 321 and the lower wedge blocks 322 are opposite, and the bevel edges 324 are set in opposite directions.

[0024] As shown in the above-mentioned structural setting, when the push-pull pen is in a stationary state, the lower wedge block 322 cooperates with the lower ratchet 332, and according to the difference between the large V-shaped notch and the small V-shaped notch of the lower ratchet 332, the extended length of the pen shell 1 relative to the pen cover 2 changes, and the extended length of the pen shell 1 is equal to whether the pen tip of the pen core 3 is extended.

[0025] In addition, the V-shaped grooves of the upper ratchet 331 and the lower ratchet 332 and the upper wedge block 321 and the lower wedge block 322 of this embodiment are all provided with inclined structures and flat vertical surfaces, and the flat vertical surfaces are in a relative arrangement. When they move to a certain position, the two form a circumferential rotation limit, and the reverse rotation is restricted based on the inclined structure, so that it can be stably maintained in one state without shaking.

[0026] In addition, the spiral guide surface 334 and the bevel 324 can achieve axial movement. When the other matching part abuts against it, the bevel drives it to convert the axial movement into circumferential rotation, thereby realizing the circumferential rotation switching of the peak and valley relative positions of the upper wedge block 321 and the lower wedge block 322 and the upper ratchet teeth 331 and the lower ratchet teeth 332, realizing the most important telescopic switching of the pen shell 1 of the push-pull pen of this embodiment.

[0027] As a further arrangement of the above scheme, the pen housing 1 and the inner gear sleeve 33 are fixedly connected, a limiting ring groove 26 is provided on the part where the inner rod 31 is inserted into the pen sleeve 2, and a limiting ring block 27 is provided in the hole groove on the pen sleeve 2 for inserting the inner rod 31.

[0028] The pen tip housing 10 of this embodiment is provided with an abutting end surface 41 for the push-pull spring 4 .

[0029] It is worth noting that the push-pull pen of this embodiment is mainly divided into two relatively movable parts. The first part is: it includes a pen shell 1 and a pen tip shell 10 arranged at the front end of the pen shell 1 with a threaded fit. The pen tip shell 10 is also axially movably connected and fixed with the inner gear sleeve 33. The fixation can be done by glue or other methods; the second part: the pen shell 2, the pen shell 2 also includes a pen cap plug at the end, the pen cap plug is inserted into the end hole of the pen shell 2, and a middle hole plug with a limiting ring block 27 is also provided on it. The inner rod 31 is inserted into the middle hole of the plug post, and the limiting ring groove 26 cooperates with the limiting ring block 27 to axially movably connect and fix the inner rod 31 to the pen shell 2. The outer gear sleeve 32 is sleeved on the inner rod 31. Based on the limiting structure setting that the end of the inner rod 31 is larger than the outer gear sleeve 32, the pen core 3 is abutted against the end of the inner rod 31 based on the elastic force of the push-pull spring 4, thereby realizing the relative axial fixation of the pen core 3, the inner rod 31, the outer gear sleeve 32 and the pen shell 2 as a whole;

[0030] When the pen core 3 is in the exposed state in the pen shell 1, the large V-shaped notch of the lower ratchet 332 of the inner gear sleeve 33 is facing the lower wedge 322 of the outer gear sleeve 32, and the pen shell 1 extends relative to the pen shell 2. At this time, under the push of external force, the first part of the pen shell 1 will move axially relative to the second part of the pen shell 2. In this process, the upper ratchet 331 of the inner gear sleeve 33 will cooperate with the upper wedge 321 of the outer gear sleeve 32 after the axial movement. Based on the inclined surfaces of the relative parts of the two parts under the axial force, it is converted into a circumferential driving force. During the axial movement, they rotate synchronously relative to each other, and the rotation is clockwise and counterclockwise relative to each other, thereby generating a circumferential angle switch between the two. After the external force is released, the push-pull spring 4 is compressed and restored, and the reverse force acts on the first part of the pen shell 1, causing it to extend and rotate in the circumferential direction. The outer gear sleeve 32 and the inner gear sleeve 33, which have been rotated in the circumferential direction, will cooperate with the lower wedge block 322 of the outer gear sleeve 32 after axial movement to achieve the effect of continued synchronous rotation, and stop after reaching the vertical edge 333. At this time, the lower wedge block 322 is inserted into the small V-shaped groove of the lower ratchet 332, and the size of the pen shell 1 inside the pen shell 2 becomes larger. The pen shell 1 is retracted relative to the pen shell 2, and the tip of the pen core 3 is smoothly exposed; when retracting the pen core 3, just push the pen shell 1 again.

[0031] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A low-noise push-pull pen, comprising a pen case (1), a pen cover (2) and a pen core (3), characterized in that: The pen cover (2) and the pen housing (1) are axially movable and telescopically arranged. The pen core (3) is located in an inner cavity formed by the pen housing (1) and the pen cover (2), and a push-pull spring (4) is provided at its front end against the inner wall of the pen housing (1). The push-pull spring (4) is used to elastically drive the pen core (3) to move in the direction of the pen cover (2). The rear end of the pen core (3) is in contact with an inner rod (31). The other end of the inner rod (31) is inserted into the pen cover (2). An outer tooth sleeve (32) is provided on the inner rod (31). An inner tooth sleeve (33) is also provided outside the outer tooth sleeve (32). The mold teeth of the outer tooth sleeve (32) and the mold teeth of the inner tooth sleeve (33) are arranged relative to each other.

2. The silent push-pull pen according to claim 1, characterized in that: The mold teeth on the inner gear sleeve (33) include upper ratchet teeth (331) and lower ratchet teeth (332), and the upper ratchet teeth (331) and the lower ratchet teeth (332) are respectively provided with a plurality of groups, and each upper ratchet tooth (331) and the lower ratchet tooth (332) are provided with a V-shaped notch, one side wall of which is provided with a vertical edge (333), and the other side wall is provided with a spiral guide surface (334).

3. The silent push-pull pen according to claim 2, characterized in that: The spiral guide surfaces (334) of the V-shaped notches of the upper ratchet (331) and the lower ratchet (332) are arranged in opposite directions, and the peaks and valleys of the V-shaped notches of the upper ratchet (331) and the lower ratchet (332) are arranged in a staggered manner.

4. The silent push-pull pen according to claim 1, characterized in that: The mold teeth on the outer tooth sleeve (32) include a plurality of groups of upper wedge blocks (321) and lower wedge blocks (322) with their tips facing inwards, and the upper wedge blocks (321) and lower wedge blocks (322) both have sharp corners (323) and bevel edges (324). The sharp corners (323) of the upper wedge blocks (321) and lower wedge blocks (322) are opposite to each other, and the bevel edges (324) are arranged in opposite directions.

5. The silent push-pull pen according to claim 1, characterized in that: The pen housing (1) and the inner gear sleeve (33) are fixedly connected, a portion of the inner rod (31) inserted into the pen sleeve (2) is provided with a limiting ring groove (26), and a limiting ring block (27) is provided in the hole groove on the pen sleeve (2) for inserting the inner rod (31).

6. The silent push-pull pen according to claim 1, characterized in that: The pen housing (1) comprises a pen tip housing (10), the pen tip housing (10) being provided with an abutting end surface (41) for a push-pull spring (4), and the pen tip housing (10) being threadedly connected to the front end of the pen housing (1).

Images