阅读说明：本技术 一种铅笔笔芯防断保护笔套 (Pencil lead breakage-proof protective pen cap ) 是由 黄嘉雄 于 2021-02-26 设计创作，主要内容包括：本发明公开了一种铅笔笔芯防断保护笔套,包括伸缩管道、设置于所述伸缩管道上端的手动对铅笔上端进行固定并定位的上定位机构、设置与所述伸缩管道下端的对铅笔下端的进行手动固定并定位的下定位机构、可手动启动并可对铅笔笔尖处的笔芯进行保护的保护机构、触发保护机构的限制机构；本技术方案中的一种铅笔笔芯防断保护笔套能在使用者不使用铅笔时,会自动对铅笔头处进行保护,从而达到防止铅笔掉落在地上从而使得铅笔芯断裂的现象,同时改装置还能有效防止使用者在使用过程中因为书写用力过大从而使得铅笔芯断裂的现象,保证了铅笔在使用的过程中不会因为笔芯的断裂从而缩短了铅笔的使用寿命,大大提高了铅笔的使用寿命。(The invention discloses a pencil lead breakage-proof protective pen cap which comprises a telescopic pipeline, an upper positioning mechanism, a lower positioning mechanism, a protective mechanism and a limiting mechanism, wherein the upper positioning mechanism is arranged at the upper end of the telescopic pipeline and used for manually fixing and positioning the upper end of a pencil, the lower positioning mechanism is arranged at the lower end of the telescopic pipeline and used for manually fixing and positioning the lower end of the pencil, the protective mechanism can be manually started and used for protecting a pencil lead at the pencil point, and the limiting mechanism is used for triggering the protective mechanism; the pencil lead breakage-proof protection pen cap in the technical scheme can automatically protect the position of the pencil head when a user does not use a pencil, thereby preventing the pencil from falling on the ground and enabling the phenomenon of pencil lead breakage, and meanwhile, the device can also effectively prevent the phenomenon that the user makes the phenomenon of pencil lead breakage in the using process because the user exerts too much force for writing, thereby ensuring that the service life of the pencil can not be shortened due to breakage of the pencil lead in the using process of the pencil, and greatly prolonging the service life of the pencil.)

1. The utility model provides a pencil refill prevents disconnected protection pen socket which characterized in that: including flexible pipeline, set up in flexible pipeline upper end is manual fix and location last positioning mechanism, setting and flexible pipeline lower extreme carries out the lower positioning mechanism of manual fixed and location, can manual start and can carry out the protection mechanism of protection, the limiting mechanism who triggers protection mechanism to the refill of pencil nib department to the pencil lower extreme, limiting mechanism includes the locking subassembly that locks, the manual start-up subassembly that locks behind the protection mechanism and control manual trigger to the protection mechanism under the out-of-service condition the dynamics protection subassembly of the dynamics of limiting mechanism.

2. The pencil lead breakage-preventing protective cap of claim 1, characterized in that: go up positioning mechanism and include fixed connection in the last fixed ring of flexible pipeline upper end, the inside annular chamber that still is equipped with of last fixed ring, go up fixedly connected with rubber circle on the chamber wall about the annular chamber wall, it has the positioning pipeline still to fix the winding on the rubber circle, the annular chamber is kept away from still be equipped with the intercommunication on the chamber wall of the one end of annular chamber center direction the outside screw hole of last fixed ring, still there is the screw rod through threaded connection in the screw hole, the screw rod is close to the one end of annular chamber still stretches into the fixed rope of inside and fixed connection of annular chamber, fixed rope still passes the positioning pipeline.

3. The pencil lead breakage-preventing protective cap of claim 1, characterized in that: the lower positioning mechanism comprises a lower positioning ring fixedly connected to the lower end of the telescopic pipeline, two clamping grooves with openings pointing to the center direction of the lower positioning ring are further arranged in the lower positioning ring, clamping blocks are connected in the clamping grooves in a sliding manner, springs are fixedly connected between the clamping blocks and the cavity wall of the clamping grooves far away from the center direction of the lower positioning ring, one ends of the clamping blocks far away from the center direction of the lower positioning ring are further fixedly connected with retraction pull ropes, the lower ends of the clamping blocks at the right end of the lower positioning ring are further fixedly connected with linkage pull ropes, the lower ends of the linkage pull ropes penetrate through the lower cavity wall of the clamping grooves, penetrate through the inner part of the lower positioning ring and the left cavity wall of the clamping grooves at the left end of the lower positioning ring and are fixedly connected to the left end of the clamping blocks at the left end of the lower positioning ring, the withdrawing groove is internally provided with a withdrawing sliding block in a sliding connection mode, a spring is fixedly connected between the lower end of the withdrawing sliding block and the lower cavity wall of the withdrawing groove, and the right end of the withdrawing sliding block penetrates through the right cavity wall of the clamping groove at the right end of the lower positioning groove, penetrates through the inner part of the clamping groove and the left cavity wall of the withdrawing groove and is fixedly connected to the left end of the withdrawing sliding block.

4. The pencil lead breakage-preventing protective cap of claim 1, characterized in that: the protection mechanism comprises a protection ring which is connected to the outer portion of the lower positioning ring in a sliding mode, a protection cavity is further arranged inside the protection ring, the lower end of the lower positioning ring is located in the protection cavity, a spring is fixedly connected between the lower cavity wall of the protection cavity and the lower end of the lower positioning ring, and a protection channel which is communicated with the outer portion of the protection ring is further arranged on the lower cavity wall of the protection cavity.

5. The pencil lead breakage-preventing protective cap of claim 1, characterized in that: the dynamics protection subassembly includes two openings that are equipped with on the holding ring down are kept away from two restriction grooves of holding ring central direction down, sliding connection has two restriction sliders in the restriction groove, the restriction slider with the restriction groove is close to fixedly connected with spring between the chamber wall of holding ring central direction down, the restriction slider is close to the one end of holding ring central direction is fixedly connected with restriction stay cord down still, it transships the slider to go back sliding connection on the chamber wall under the restriction groove, transship the slider with the restriction groove is close to fixedly connected with overload spring between the chamber wall of holding ring central direction down, it transships the stay cord still to transship the slider lower extreme fixedly connected with, under the initial condition, it is in the relaxed state to transship the stay cord.

6. The pencil lead breakage-preventing protective cap of claim 1, characterized in that: the start assembly comprises an opening arranged at the outer end of the lower positioning ring is far away from a start groove in the center direction of the lower positioning ring, a start sliding block is connected in the start groove in a sliding mode, the start sliding block is close to the start groove, a spring is fixedly connected between the cavity walls in the center direction of the lower positioning ring, the limiting pull rope and the overload pull rope other end penetrate through the inner portion of the lower positioning ring and are fixedly connected to the start sliding block, the start sliding block is close to one end in the center direction of the lower positioning ring, a locking pull rope is fixedly connected to the lower end of the start sliding block, and therefore the locking assembly is controlled through the locking pull rope.

7. The pencil lead breakage-preventing protective cap of claim 1, characterized in that: the locking subassembly includes the opening that the holding ring outer end was equipped with is kept away from down the locking groove of holding ring center direction, locking inslot sliding connection has the locking slider, the locking slip with the locking groove is close to fixedly connected with spring between the chamber wall of holding ring center direction down, the locking stay cord other end still passes the inside and fixed connection of holding ring is in down the locking slider is close to hold in one of holding ring center direction down.

Technical Field

The invention relates to the field related to office tools, in particular to a pencil lead breakage-proof protective pen cap.

Background

The anti-breaking protection has the advantages that the pencil can not break the pencil lead at the pencil point under the condition that the pencil is not used, and the pencil point can not be broken due to overlarge writing force of a user.

The pencil is one of the tools commonly used in official working, but the phenomenon that the user often can drop on ground when not using the pencil thereby breaks the lead often can appear in the use of pencil in often, and the user also often can make the lead break owing to exert oneself too greatly when using the pencil.

Disclosure of Invention

In view of the above, the invention provides a pencil lead breakage-prevention protective pen cap, which can automatically protect a pencil head when a user does not use a pencil, so that the phenomenon that the pencil lead is broken due to the fact that the pencil falls on the ground is prevented, meanwhile, the device can also effectively prevent the phenomenon that the pencil lead is broken due to the fact that the user uses too much writing force in the using process, the service life of the pencil is guaranteed not to be shortened due to the fact that the pencil lead is broken in the using process of the pencil, and the service life of the pencil is greatly prolonged.

The utility model provides a pencil refill prevents disconnected protection pen socket, including flexible pipeline, set up in flexible pipeline upper end is manual fix and location last positioning mechanism to pencil upper end, set up with flexible pipeline lower extreme carries out manual fixed and location down positioning mechanism to the pencil lower extreme, can manually start and can carry out the protection mechanism that protects to the refill of pencil nib department, trigger protection mechanism's limiting mechanism, limiting mechanism includes the locking subassembly that locks, the manual start-up subassembly that locks behind the protection mechanism that starts protection mechanism and control manual trigger to the protection subassembly of the dynamics of limiting mechanism's dynamics under the out of service state.

Further, it includes fixed connection and is in last fixed ring of flexible pipeline upper end to go up positioning mechanism, the inside annular chamber that still is equipped with of last fixed ring, go up the annular chamber wall on the chamber wall fixedly connected with rubber circle still, it has the location pipeline still to fix the winding on the rubber circle, the annular chamber is kept away from still be equipped with the intercommunication on the chamber wall of the one end of annular chamber center direction go up the outside screw hole of fixed ring, still there is the screw rod through threaded connection in the screw hole, the screw rod is close to the one end of annular chamber still stretches into the fixed rope of inside and fixed connection of annular chamber, fixed rope still passes the location pipeline.

Further, the lower positioning mechanism comprises a lower positioning ring fixedly connected to the lower end of the telescopic pipeline, two clamping grooves with openings pointing to the central direction of the lower positioning ring are further arranged in the lower positioning ring, clamping blocks are connected in the clamping grooves in a sliding manner, springs are fixedly connected between the clamping blocks and the cavity wall of the clamping grooves far away from the central direction of the lower positioning ring, one ends of the clamping blocks far away from the central direction of the lower positioning ring are further fixedly connected with retraction pull ropes, the lower ends of the clamping blocks at the right end of the lower positioning ring are further fixedly connected with linkage pull ropes, the lower ends of the linkage pull ropes penetrate through the lower cavity wall of the clamping grooves and penetrate through the inner part of the lower positioning ring and the left cavity wall of the clamping grooves at the left end of the lower positioning ring and are fixedly connected to the left end of the clamping blocks at the left end of the lower positioning ring, the withdrawing groove is internally provided with a withdrawing sliding block in a sliding connection mode, a spring is fixedly connected between the lower end of the withdrawing sliding block and the lower cavity wall of the withdrawing groove, and the right end of the withdrawing sliding block penetrates through the right cavity wall of the clamping groove at the right end of the lower positioning groove, penetrates through the inner part of the clamping groove and the left cavity wall of the withdrawing groove and is fixedly connected to the left end of the withdrawing sliding block.

Further, the protection mechanism comprises a protection ring which is connected to the outer portion of the lower positioning ring in a sliding mode, a protection cavity is further formed in the protection ring, the lower end of the lower positioning ring is located in the protection cavity, a spring is fixedly connected between the lower cavity wall of the protection cavity and the lower end of the lower positioning ring, and a protection channel which is communicated with the outer portion of the protection ring is further formed in the lower cavity wall of the protection cavity.

Further, the dynamics protection subassembly includes two openings that are equipped with on the holding ring down are kept away from two restriction grooves of holding ring center direction down, sliding connection has two restriction sliders in the restriction groove, the restriction slider with the restriction groove is close to fixedly connected with spring between the chamber wall of holding ring center direction down, the restriction slider is close to the one end of holding ring center direction still fixedly connected with restriction stay cord down, it transships the slider still to sliding connection on the chamber wall under the restriction groove, transship the slider with the restriction groove is close to fixedly connected with overload spring between the chamber wall of holding ring center direction down, overload slider lower extreme still fixedly connected with overload stay cord, under the initial condition, overload stay cord is in the relaxed state.

Further, the start assembly comprises an opening arranged at the outer end of the lower positioning ring, the opening is far away from a start groove in the center direction of the lower positioning ring, a start sliding block is connected in the start groove in a sliding mode, the start sliding block is close to the start groove, a spring is fixedly connected between the cavity walls in the center direction of the lower positioning ring, the limiting pull rope and the overload pull rope other end penetrate through the inner portion of the lower positioning ring and are fixedly connected to one end, close to the center direction of the lower positioning ring, of the start sliding block, a locking pull rope is fixedly connected to the lower end of the start sliding block, and therefore the locking assembly is controlled through the locking pull rope.

Further, the locking subassembly includes the opening that the holding ring outer end was equipped with is kept away from down the locking groove of holding ring center direction, locking inslot sliding connection has the locking slider, the locking slip with the locking groove is close to fixedly connected with spring between the chamber wall of holding ring center direction down, the locking stay cord other end still passes the inside and fixed connection of holding ring is in down the locking slider is close to hold in one of holding ring center direction down.

The technical proposal provides a pencil protective cap which can automatically protect the pencil lead when not in use, can manually remove the protection when in use and can prevent the breakage of the pencil point due to overlarge writing force, when the pencil is used, the protection of the pencil by the pen cap can be manually released by pressing the limiting mechanism of the pen cap, so that the user can normally use the pencil, when the user does not use the pencil, the limiting mechanism is stopped being pressed, so that the protection mechanism is automatically ejected out, the pencil point of the pencil can be automatically protected, if the writing force is too large, the force protection component can be triggered by the limiting mechanism, so that the protection mechanism can also automatically pop up to complete the protection of the pencil lead, thereby effectively preventing the unnecessary breakage phenomenon at the pencil point of the pencil, and greatly prolonging the service life of the pencil.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a state diagram of the device of FIG. 1 in normal use in accordance with an embodiment of the present invention;

FIG. 3 is a state diagram of the device of FIG. 1 in an over-stressed use in accordance with an embodiment of the present invention;

FIG. 4 is a schematic structural diagram at A-A in FIG. 1 according to an embodiment of the present invention;

FIG. 5 is an enlarged schematic view of the structure at B in FIG. 1 according to an embodiment of the present invention;

FIG. 6 is an enlarged schematic view of the structure at C in FIG. 1 according to an embodiment of the present invention;

FIG. 7 is an enlarged schematic view of the embodiment of the present invention at D in FIG. 1;

fig. 8 is an enlarged schematic structural diagram at E in fig. 1 according to an embodiment of the present invention.

Detailed Description

The invention will now be described in detail with reference to fig. 1-8, wherein for ease of description the orientations described below are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The pencil lead breakage-preventing protection cap described in conjunction with fig. 1-8 comprises a telescopic pipeline 19, an upper positioning mechanism which is arranged at the upper end of the telescopic pipeline 19 and used for manually fixing and positioning the upper end of a pencil, a lower positioning mechanism which is arranged at the lower end of the telescopic pipeline 19 and used for manually fixing and positioning the lower end of the pencil, a protection mechanism which can be manually started and used for protecting a pencil lead at the pencil point, and a limiting mechanism which triggers the protection mechanism, wherein the limiting mechanism comprises a locking component which locks the protection mechanism in a use stop state, a starting component which locks after the protection mechanism is manually started, and a force protection component which controls the force for manually triggering the limiting mechanism; the technical scheme provides a pencil protecting sleeve which can automatically protect pencil lead when not in use, can manually remove the protection when in use and can prevent the pencil point from being broken due to overlarge writing force, the positions of the upper positioning mechanism and the lower positioning mechanism are adjusted through the telescopic pipeline 19, so that the protecting sleeve is fixed on the pencil through the upper positioning mechanism and the lower positioning mechanism, when a user uses the pencil, the protecting sleeve can be manually removed through the limiting mechanism and the locking component by contacting, so that the protecting mechanism can be manually pulled up and fixed through the starting component, so that the user can normally use the pencil, when the user stops using the pencil, the limiting mechanism is stopped to trigger, so that the fixing of the starting component is lost, and the protecting component automatically restores the protection of the pencil lead at the pencil point, and still can trigger when the user has used great dynamics when writing the dynamics protection subassembly, thereby make once more protection mechanism loses start-up assembly's is fixed, thereby makes the protection subassembly resume once more, thereby has prevented that the user from exerting oneself too big phenomenon that makes the pencil break when using the pencil to write, can improve the life of pencil greatly.

In this embodiment, the upper positioning assembly includes an upper fixing ring 12 fixedly connected to an upper end of the telescopic pipeline 19, an annular cavity 18 is further disposed inside the upper fixing ring 12, rubber rings 16 are further fixedly connected to upper and lower cavity walls of the annular cavity, a positioning pipeline 17 is further fixedly wound on the rubber rings 16, a threaded hole 14 communicating with an outside of the upper fixing ring 12 is further disposed on a cavity wall of one end of the annular cavity 18 away from a center direction of the annular cavity 18, a screw 13 is further connected to the inside of the threaded hole 14 through a thread, one end of the screw 13 close to the annular cavity 18 further extends into the annular cavity 18 and is fixedly connected with a fixing rope 15, and the fixing rope 15 further passes through the positioning pipeline 17; the pencil is sleeved in the upper fixing ring 12, the upper end of the pencil is aligned with the upper end of the fixing ring 12, the screw 13 is manually rotated, so that the screw 13 moves towards one end close to the center direction of the annular cavity 18, meanwhile, the screw 13 can wind the fixing rope 15 on the screw 13 while rotating, so that the fixing rope 15 is tightened, the upper end of the pencil is fixed through the rubber ring 16, the operation is simple, and the pencil fixing device can be used for fixing and positioning various types of pencils.

In this embodiment, the lower positioning mechanism includes a lower positioning ring 10 fixedly connected to the lower end of the telescopic pipe 19, two clamping grooves 35 with openings pointing to the center direction of the lower positioning ring 10 are further provided in the lower positioning ring, a clamping block 34 is slidably connected in the clamping groove 35, a spring is fixedly connected between the clamping block 34 and the cavity wall of the clamping groove 35 far away from the center direction of the lower positioning ring 10, a retraction pull rope 38 is further fixedly connected to one end of the clamping block 34 far away from the center direction of the lower positioning ring 10, a linkage pull rope 39 is further fixedly connected to the lower end of the clamping block 34 at the right end of the lower positioning ring, the lower end of the linkage pull rope 39 further penetrates through the lower cavity wall of the clamping groove 34 and penetrates through the interior of the lower positioning ring 10 and the left cavity wall of the clamping groove 35 at the left end of the lower positioning ring 10 and is fixedly connected to, the upper end of the lower positioning ring 10 is further provided with a retracting groove 37 with an upward opening, a retracting sliding block 36 is connected in the retracting groove 37 in a sliding manner, a spring is fixedly connected between the lower end of the retracting sliding block 36 and the lower cavity wall of the retracting groove 37, and the right end of the 38 also penetrates through the right cavity wall of the clamping groove 35 at the right end of the lower positioning groove 10, penetrates through the interior of the lower positioning groove 10 and the left cavity wall of the retracting groove 37 and is fixedly connected to the left end of the retracting sliding block 36; the lower positioning ring 10 can be moved on a pencil by manually pressing the retraction slider 36, so that the clamping block is drawn into the lower positioning ring 10 through the retraction pull rope 38, and the lower positioning ring 10 is moved to the lower end of the pencil, and the retraction slider 36 is stopped being pressed, so that the clamping block 34 is reset, so that the pencil is clamped, and the positioning and fixing of the lower positioning ring 10 are completed.

In this embodiment, the protection mechanism includes a protection ring 11 slidably connected to the outside of the lower positioning ring 10, a protection cavity 32 is further disposed inside the protection ring 11, the lower end of the lower positioning ring 10 is located in the protection cavity 32, a spring is fixedly connected between the lower cavity wall of the protection cavity 32 and the lower end of the lower positioning ring, and a protection channel 33 communicating with the outside of the protection ring 11 is further disposed on the lower cavity wall of the protection cavity 32; in the initial state, the protection ring 11 protects the pen point at the lower end of the pencil, when the pencil is used, the protection ring is manually slid upwards along the lower positioning ring 10, so that the pen point leaks out, the pencil is normally used, meanwhile, the spring in the protection ring 11 is compressed, and when the pencil is not used or the force is excessively applied during use, the protection ring 11 automatically resets under the action of the spring, so that the pen point of the pencil is automatically protected.

In this embodiment, the force protection assembly includes two limiting grooves 21, two openings of which are far away from the center direction of the lower positioning ring 10, which are arranged on the lower positioning ring, two limiting sliders 22 are slidably connected in the limiting grooves 21, a spring is fixedly connected between the limiting slider 22 and a cavity wall of the limiting groove 21 near the center direction of the lower positioning ring 10, one end of the limiting slider 22 near the center direction of the lower positioning ring 10 is also fixedly connected with a limiting pull rope 20, an overload slider 24 is also slidably connected on a lower cavity wall of the limiting groove 21, an overload spring 40 is fixedly connected between the overload slider 24 and the cavity wall of the limiting groove near the center direction of the lower positioning ring 10, the lower end of the overload slider 24 is also fixedly connected with an overload pull rope 25, and in an initial state, the overload pull rope 25 is in a relaxed; the limiting slide block 22 is pressed to control the limiting pull rope 20, so that power is transmitted to the starting assembly through the limiting pull rope 20, when the limiting slide block 22 is in contact with the overload slide block 24, the overload pull rope is tensioned by the overload pull rope 25, at the moment, when the limiting slide block 22 is continuously pressed, the overload slide block 24 is pressed, so that the power is transmitted into the starting assembly again through the overload pull rope, the force control during the pencil writing can be realized, and the pencil core is prevented from being broken due to excessive force.

In this embodiment, the starting assembly includes a starting groove 28 having an opening at an outer end of the lower positioning ring 10 away from a central direction of the lower positioning ring 10, a starting slider 26 is slidably connected in the starting groove 28, a spring is further fixedly connected between the starting slider 26 and a cavity wall of the starting groove 28 close to the central direction of the lower positioning ring 10, the other ends of the limiting pull rope 20 and the overload pull rope 25 both penetrate through the inside of the lower positioning ring and are fixedly connected to one end of the starting slider 26 close to the central direction of the lower positioning ring 10, a locking pull rope 27 is further fixedly connected to a lower end of the starting slider, so that the locking assembly is controlled by the locking pull rope 27, and the spring fixedly connected to the starting slider 26 is in a compressed state in an initial state; the locking of the protective ring 11 is completed by the restraining cord 20, which causes the activation slider to spring out under the action of a spring, and the activation slider 26 pulls the overload cord in the left side of the movement, when the activation slider 26 is fully ejected, which tensions the overload cord 25, so that the activation slider 26 can be pulled by the overload cord 25 to return, thereby contacting the locking of the protective ring 11.

In this embodiment, the locking assembly includes a locking groove 30 having an opening at the outer end of the lower positioning ring 10 away from the center direction of the lower positioning ring 10, a locking slider 29 is slidably connected in the locking groove 30, a spring is fixedly connected between the locking slider 29 and the locking groove 30 near the cavity wall of the lower positioning ring 10 in the center direction, and the other end of the locking pull rope 27 further passes through the inside of the lower positioning ring 10 and is fixedly connected to one end of the locking slider 29 near the center direction of the lower positioning ring 10; the power is transmitted to the lock slider 29 through the lock cord 27, so that the lock control of the protection ring 11 is controlled by controlling the lock cord 29.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.