CN210116292U - Propelling pencil - Google Patents

Abstract

A propelling pencil comprises a pencil point, a pencil holder, a pencil tail and a pencil lead, wherein the pencil point is connected to the front end of the pencil holder in a threaded mode, the pencil tail is detachably connected to the tail end of the pencil holder in a rotating mode, the pencil lead is inserted into the pencil holder from the front end of the pencil lead, a core clamping device moving along the axial direction of the pencil holder is arranged in the pencil holder, the core clamping device is clamped to the tail end of the pencil lead, a screw rod is axially arranged in the pencil tail, the front end of the screw rod is detachably connected to the tail end of the core clamping. The utility model has the advantages of reasonable structure, the compactness drives inside screw rod axial motion through the rotation of pen-holder, and the screw rod makes the refill freely stretch out and draw back through pressing from both sides the core ware, and easy operation refill is flexible effectual, and daily installation is dismantled swiftly, is suitable for the popularization.

Description

Propelling pencil

Technical Field

The utility model relates to a technical field is write in the drawing, especially relates to a pencil, specifically is a propelling pencil.

Background

Writing the drawing at present and all needing to use the pencil, and download most still wooden pencil on the market, this kind of pencil needs extra cutting, it is comparatively inconvenient to use, and all be disposable, environmental protection not enough, need a pencil that can used repeatedly now, only need when this kind of pencil uses the refill can, can freely stretch out and draw back according to the in service behavior refill, but general structure is adjusted the refill and is all needed to adjust repeatedly to what position, it is not high to adjust the precision, can not quick adjustment use.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve the problem that above-mentioned prior art exists, provide a propelling pencil, solve present traditional pencil can not used repeatedly not environmental protection, refill length adjustment coarse problem.

The utility model provides a technical scheme that its technical problem adopted: the propelling pencil comprises a pencil point, a pencil holder, a pencil tail and a pencil lead, wherein the pencil point is connected to the front end of the pencil holder in a threaded mode, the pencil tail is detachably connected to the tail end of the pencil holder in a rotating mode, the pencil lead is inserted into the pencil holder from the front end of the pencil lead, a core clamping device moving along the axial direction of the pencil lead is arranged in the pencil holder, the core clamping device is clamped to the tail end of the pencil lead, a screw rod is axially arranged in the pencil tail, the front end of the screw rod is detachably connected to the tail end of the core clamping device in a rotating mode, a connecting portion in threaded. After the pen holder is arranged, the connecting part is driven to rotate by rotating the pen holder, in the process, the screw rod drives the sandwich device to axially move in the pen holder, the effect that the pen core is freely stretched and retracted is finally achieved, the whole process is simple and convenient to operate, the moving position of the screw rod is accurate, the pen core is guaranteed to be suitable in moving position to the maximum extent, the internal structures are detachably connected, the daily installation and disassembly are simple and convenient, and the using effect is good.

As the utility model discloses a further improvement, connecting portion include draw-in groove and locating piece, and the locating piece is radial spacing to be placed in the draw-in groove, locating piece and screw rod threaded connection, and the top of tail of a pen front end is pressed on the locating piece. The positioning block is fixed in the radial direction by the clamping groove, the positioning block is completely fixed under the pushing of the front end of the pen tail, and the positioning block synchronously rotates when the pen holder rotates, so that the screw rod axially moves.

As a further improvement of the utility model, the pen holder and the pen tail are rotatably sleeved in an annular bulge and annular groove clamping mode, and the sandwich device is connected with the screw rod in an inserting way. The pen holder is sleeved with the pen tail in a rotating mode, or the core holder is connected with the screw in an inserting mode, the core holder and the screw are detachable, operation is simple, and daily installation and maintenance are facilitated.

As a further improvement, the pen holder inner wall circumference equipartition has a set of bead along axial extension, and bead and the laminating contact of core clamp lateral wall form radial limit structure. The convex edges are respectively attached to the side walls of the sandwich device, the sandwich device can be radially limited, so that the sandwich device can only axially move along the pen holder, the screw rod at the tail end does not rotate and only axially moves, the rotation efficiency of the pen holder is higher, and the pen core is ensured to only do telescopic motion.

As a further improvement, the screw tail end is protruded with a limiting part which is matched with the positioning block in a limiting way. The limiting part can prevent the screw from excessively moving forwards to be separated from the positioning block, and the screw is guaranteed to move within the stroke range all the time.

As a further improvement, the positioning block is a nut, and the clamping groove is a hexagonal clamping groove. The nut inlays and reaches radial spacing effect in hexagonal draw-in groove.

The utility model discloses profitable effect is: the utility model has the advantages of reasonable structure, the compactness drives inside screw rod axial motion through the rotation of pen-holder, and the screw rod makes the refill freely stretch out and draw back through pressing from both sides core ware, and easy operation refill flexible accuracy is high effectual, and daily installation is dismantled swiftly, is suitable for the popularization.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is an exploded view of the present invention.

Description of reference numerals: the pen comprises a pen point 1, a pen holder 2, a pen tail 3, a pen core 4, a core clamp 5, a screw rod 6, a positioning block 7 and a limiting part 8.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

with reference to the accompanying drawings: the propelling pencil in the embodiment comprises a pencil point 1, a pencil holder 2, a pencil tail 3 and a pencil lead 4, wherein the pencil point 1 is in threaded connection with the front end of the pencil holder 2, the pencil tail 3 is detachably connected with the tail end of the pencil holder 2 in a rotating mode, the pencil lead 4 is inserted into the pencil holder 2 from the front end of the pencil point 1, a core clamping device 5 moving along the axial direction of the pencil lead is arranged in the pencil holder 2, the core clamping device 5 is clamped at the tail end of the pencil lead 4, a screw rod 6 arranged axially is arranged in the pencil tail 3, the front end of the screw rod 6 is detachably connected with the tail end of the core clamping device 5 in a rotating mode, a connecting part in threaded connection with the screw rod 6.

The connecting portion includes draw-in groove and locating piece 7, and radial spacing placing in the draw-in groove of locating piece 7, locating piece 7 and 6 threaded connection of screw rod, 3 front ends tops of tail of the pen are pressed on locating piece 7.

The penholder 2 and the pentail 3 are rotatably sleeved in a clamping mode of the annular protrusion and the annular groove, and the core clamper 5 is connected with the screw rod 6 in an inserting mode.

A group of convex edges extending along the axial direction are uniformly distributed on the circumference of the inner wall of the pen holder 2, and the convex edges are in contact with the side wall of the core clamper 5 in an attaching mode to form a radial limiting structure.

The tail end of the screw rod 6 protrudes to form a limiting part 8, the limiting part 8 is in limiting fit with a positioning block 7, the positioning block 7 is a nut, and the clamping groove is a hexagonal clamping groove.

While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims (6)

1. The utility model provides a propelling pencil, includes nib (1), pen-holder (2), tail (3) and refill (4), nib (1) threaded connection is at pen-holder (2) front end, and tail (3) can be dismantled and rotate the connection at pen-holder (2) tail end, and inside refill (4) inserted pen-holder (2) from nib (1) front end, characterized by: the pen is characterized in that a sandwich device (5) moving along the axial direction of the pen holder (2) is arranged in the pen holder, the sandwich device (5) is clamped at the tail end of a pen core (4), a screw rod (6) arranged in the axial direction is arranged in the pen tail (3), the front end of the screw rod (6) is detachably and fixedly connected to the tail end of the sandwich device (5), a connecting part in threaded connection with the screw rod (6) is fixed in the pen holder (2), and the screw rod (6) synchronously rotates and moves along the axial direction after the pen holder (2) rotates.

2. The mechanical pencil of claim 1, wherein: the connecting portion comprises a clamping groove and a positioning block (7), the positioning block (7) is radially and limitedly arranged in the clamping groove, the positioning block (7) is in threaded connection with the screw rod (6), and the front end of the pen tail (3) is pressed against the positioning block (7).

3. The mechanical pencil of claim 1, wherein: the pen holder (2) and the pen tail (3) are rotatably sleeved in a clamping mode of the annular protrusion and the annular groove, and the core clamper (5) is connected with the screw rod (6) in an inserting mode.

4. The mechanical pencil of claim 1, wherein: a group of convex edges extending along the axial direction are uniformly distributed on the circumference of the inner wall of the pen holder (2), and the convex edges are in contact with the side wall of the sandwich device (5) in an attaching mode to form a radial limiting structure.

5. The mechanical pencil of claim 2, wherein: the tail end of the screw rod (6) protrudes with a limiting part (8), and the limiting part (8) is in limiting fit with the positioning block (7).

6. The mechanical pencil of claim 2, wherein: the positioning block (7) is a nut, and the clamping groove is a hexagonal clamping groove.

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