CN203157459U

CN203157459U - Novel pen cap and writing pen with same

Info

Publication number: CN203157459U
Application number: CN 201320045539
Authority: CN
Inventors: 解思鹏
Original assignee: QINGDAO CHANGLONG STATIONERY CO Ltd
Current assignee: QINGDAO CHANGLONG STATIONERY CO Ltd
Priority date: 2013-01-18
Filing date: 2013-01-18
Publication date: 2013-08-28
Anticipated expiration: 2023-01-18

Abstract

The utility model discloses a novel pen cap which comprises a pen cap body and a pen clip which is installed on the pen cap through a cantilever beam structure. A thermoplastic elastic body coats the tail end of the top of the pen clip, the shortest radial distance between the area coated by the thermoplastic elastic body and the central axis of the pen cap is smaller than or equal to the inside radius of the pen cap. According to the novel pen cap, the preparation method of the pen cap and the writing pen with the pen cap, comfortable hand feeling can be provided when the pen cap is snapped or pressed, and besides, self elasticity of the pen clip can be improved. After broken off, the pen clip can not disengage, the safety of the pen clip is improved, and moreover, the pen clip is not prone to sliding when used for clipping kinds of smooth surfaces. Meanwhile, if the functional requirement for rubbing exists, the pen cap can provide rubbing modes with kinds of angles.

Description

A kind of novel cap for brush and use the lettering pen of this cap for brush

Technical field

The utility model belongs to the cultural goods technical field, relates to a kind of novel cap for brush in this field and preparation method thereof and the lettering pen that uses this cap for brush specifically.

Background technology

In existing lettering pen, generally all can have pen clip, this pen clip has clamping, function such as anti-lost, the raising that level of comfort and the convenience of cultural goods use is required along with science and technology development and progress and people, effects such as that the pen clip of lettering pen has also increased is anti-roll, pressing, thus given pen clip more function implication.

Lettering pen commonly used is divided into cap covering type, rotary, knock-type (or flip-over type) according to agent structure, the pen clip of these lettering pens generally adopts integral type or split type mode to be connected with the lettering pen main body, and pen clip can adopt various metal materials, plastic material manufacturing.In application process, there is following problem for the use of lettering pen:

At first, in use, often because will press cap for brush top, the cap for brush is installed on the penholder, perhaps pressing top plug resets pen core, thereby nib is in guard mode.In this process, user, particularly pupil can be because the shape at cap for brush top cause uncomfortable sensation to user's finger in the button cap process, and particularly this sense of discomfort will be more obvious when the pressing force of the cap for brush or top plug is bigger.

Secondly, because pen clip belongs to cantilever beam structures, therefore fracture easily in the use, test for pen clip, generally by along the fatigue strength or the distortion recovery capability that move back and forth number of times and test distortion perpendicular to pen clip chucking power direction, required yield force is tested pen clip when fractureing, owing to the ductility of the restriction, particularly material that are subjected to material property and the restriction of tensile yield strength, the pen clip of thinner thickness fractures easily or the problem that the back is difficult for recovery occurs being out of shape.If come the raising ability by performance or the thickness that improves material, the problem that cost improves and the writing implement volumetric spaces limits has often appearred again.Particularly when pen clip fracture come off after because pen clip is tiny parts, when being strayed in the mouth by pupil or child, cause safety problem such as suffocate easily.Therefore the security that how to improve pen clip is a very important problem.

Application number is that the patent of CN200720184596.0 has been announced a kind of elasticity of plastics pen clip, middle part and the penholder of its plastics pen clip are hinged, the upper end of plastics pen clip is provided with the elastic force bar, and the stiff end of elastic force bar is connected with the plastics pen clip, and elasticity free end and the penholder of elastic force bar connect.Because the upper end of plastics pen clip is provided with the elastic force bar, the plastics pen clip can rotate around jointed shaft, the top of plastics pen clip makes the lower end of plastics pen clip remain the thrust of pointing to penholder under the effect of elastic force bar, makes pen clip can clamp caught object all the time, therefore clamps functional.Though this pen clip helps to improve clamping ability and recovery capability, intensity and the hardness of elastic force bar is had higher requirement, and the easy stress of root that is connected with the pen clip body of elastic force bar concentrates to cause and fracture, thereby lost elastic reaction.

Again, be proof strength, pen clip adopts metal material or duroplasts to make, because the general coefficient of friction of these materials is lower, so during the smooth paper of clamping, landing easily.

For improve the problem of skidding and provide more miscellaneous function, application number be the patent of CN201080054273.4 announced a kind of writing implement with cap, writing implement with folder and writing implement.This writing implement comprises with cap: the cap main body of tubular, and it is made of the elastomer that is formed with installing hole in the side for the protection of nib; The folder member, it comprises base portion and is located at the clamping part of the lateral surface of this base portion, accommodates writing implement front end and clamping part with base portion and extends to mode outside the cap main body via installing hole and will press from both sides member and be located at cap main body.The cap for brush integral body that this patent is announced forms by the thermoplastic elastomer (TPE) manufacturing, characteristics with comfortable feel when pressing, simultaneously by and the elastomeric material cap for brush between friction, when the clamping smooth surface, also be not easy landing, but there are the following problems, because the whole thermoplastic elastomer (TPE) that adopts of the cap for brush constitutes, because material apparent surface hardness is not enough, the cap for brush scratches easily, and the back bulk deformation easily that is squeezed.

In addition along with the raising of ink technology, wipe and rub by frictional heat and destroy the physics of writing stitching and can wipe the writing implement of class and also be on the increase.For example, application number is cap on the integral, flexible body announced of the patent of CN201080054273.4, adopts the intrinsic friction of existing elastomeric material and heat conduction physical characteristic to realize erase feature in specification embodiment.Realize the elastomeric material manufacturing that frictional force increases owing to the main part as last cap can not adopt than softness with by strain, so when the selection material, have than big limitation.In addition, application number is that the patent of CN200710196534.6 has been announced a kind of friction piece, this friction piece places the rear end of front end or the beam barrel of the cap for brush, the same physical characteristic of the intrinsic friction of existing elastomeric material and heat conduction of utilizing realizes erase feature, this specially on cap for brush top or penholder tail end mode that friction piece is set take the inside axial space of writing implement, and the problem that in the shear history of wiping, causes friction piece to come off or be out of shape easily, and above two kinds of schemes all are conducive to vertical direction or rub close to vertical direction from the angle that the space is arranged, will have influence on comfort level and the effect of wiping when at an angle.

Summary of the invention

At the deficiency that prior art exists, technical problem to be solved in the utility model is, a kind of comfortable feel is provided, can not come off, can provide the novel cap for brush and preparation method thereof and the lettering pen that uses this cap for brush of multi-angle friction mode.

For solving the problems of the technologies described above, the technical scheme that the utility model is taked is:

A kind of novel cap for brush, comprise that cap for brush body and employing cantilever beam structures are installed in the pen clip on the cap for brush, the pen clip top end adopts thermoplastic elastomer (TPE) to coat, and the minor axis of the zone that coats of thermoplastic elastomer (TPE) and cap for brush axis is less than or equal to cap for brush inside radius to distance.

Further, the zone that pen clip top end thermoplastic elastomer (TPE) coats, it is arc top section along the normal profile of pen clip direction with along the shape of the axial section of cap for brush direction.

Further, diastrophic part outer surface coating thermoplastic elastomer when pen clip bears deflection external force.

Further, in the inboard projection that clamping action has been set of pen clip, this protruding outer surface is coated with thermoplastic elastomer (TPE).

A kind of lettering pen, this lettering pen uses above-mentioned each described cap for brush.

A kind of cap for brush preparation method, the pen clip of cantilever beam structures is installed at the cap for brush, described pen clip adopts the double-shot moulding mode to form, and wherein adopts for the first time the part of plastic injection-moulded formation to be used for supporting and assembling, adopts thermoplastic elastomer (TPE) to form the surface for the second time and coats.

Further, the material of the employing of injection moulding for the first time comprises one or more in Merlon, polymethyl methacrylate, the fine copolymer of styrene-butadiene-propylene, the polyformaldehyde.

Further, adopt for the second time thermoplastic elastomer (TPE) to comprise in styrene-based elastomer, polyurethane elastomer, the polyamide elastomer one or more.

Novel cap for brush disclosed in the utility model and preparation method thereof and the lettering pen that uses this cap for brush, comfort feel when button cap or pressing both can be provided, can improve the elasticity of pen clip itself again, and after pen clip fractures, can not come off, improve the security of pen clip, and when being used for the various smooth surface of clamping, not be prone to slip yet, if when being useful on the functional requirement of friction simultaneously, can provide the friction mode of multiple angles.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment 1 disclosed novel cap for brush;

Fig. 2 is the structural representation of the cap for brush in the prior art;

Fig. 3 is the A-A profile of the utility model embodiment 1 disclosed novel cap for brush;

Fig. 4 is the B-B profile of the utility model embodiment 1 disclosed novel cap for brush;

Fig. 5 is the pen clip deflection deformation location drawing of the utility model embodiment 1 disclosed novel cap for brush;

Fig. 6 is the simulation drawing that does not come off after the pen clip fracture of the utility model embodiment 1 disclosed novel cap for brush;

Fig. 7 is the axial, cross-sectional view that the pen clip salient point of the utility model embodiment 1 disclosed novel cap for brush is coated by thermoplastic elastomer (TPE);

Fig. 8 is the front view of the utility model embodiment 2 disclosed lettering pens;

Fig. 9 is the vertical view of the utility model embodiment 2 disclosed lettering pens;

Figure 10 is the structural representation after the utility model embodiment 3 disclosed cap for brush preparation method injection mouldings for the first time;

Figure 11 is the structural representation after the utility model embodiment 3 disclosed cap for brush preparation method injection mouldings for the second time.

The specific embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.

Embodiment 1, as shown in Figure 1, present embodiment discloses a kind of novel cap for brush, comprise that cap for brush body 1 and employing cantilever beam structures are installed in the pen clip 2 on the cap for brush, pen clip top end 3 adopts thermoplastic elastomer (TPE) to coat, this coating both can be local the coating, also can be integral coating, and the minor axis of the zone that coats of thermoplastic elastomer (TPE) and cap for brush axis is less than or equal to cap for brush inside radius to distance.

Because the pen clip top end adopts the better thermoplastic elastomer (TPE) of sense of touch to coat, and therefore finger is when pressing pen clip, feel well and not can be skidded in the present embodiment.Wherein, near fulcrum and away from an end of clamping, be the pen clip top end in the pen clip.Cap for brush axis, the just center line of lettering pen such as pen core or penholder main part.When the minor axis of zone that thermoplastic elastomer (TPE) coats and cap for brush axis is less than or equal to cap for brush inside radius to distance, is pressing or during the pressing cap for brush, pointing the easier pen clip that touches.As shown in Figure 1, the inside radius of the cap for brush is a, and the region distance axis that pen clip top end thermoplastic elastomer (TPE) coats is b, and when b＜a, finger presses pen clip easily, and feel is better.Otherwise as shown in Figure 2, the inside radius of the cap for brush is a1, and the region distance axis that pen clip top end thermoplastic elastomer (TPE) coats is b1, and when b1＞a1, finger is not easy to press on the pen clip, and feel is relatively poor.

The zone that pen clip top end thermoplastic elastomer (TPE) coats, it is arc top section along the normal profile of pen clip direction with along the shape of the axial section of cap for brush direction.

The A-A section is the axial section along cap for brush direction as shown in Figure 3, and wherein top, pen clip cross section is for changing the arc of curvature, and the B-B section be the normal profile along the pen clip direction as shown in Figure 4, and wherein the radial section top is the fixing arc of curvature.

Cross sectional shape by the arc top cooperates soft thermoplastic elastic material, more helps good sense of touch.And the arc top section is conducive to realize contact with the line of paper, thus focus pressure, and the intrinsic frictional behavior of better utilization thermoplastic elastomer (TPE) is carried out physical erase.

Diastrophic part 4 outer surface coating thermoplastic elastomers when pen clip bears deflection external force, this coating both can be local the coatings, also can be integral coating.

Because the pen clip in the present embodiment is cantilever beam structures, therefore pen clip meeting deflection deformation when clamping, the position of this distortion is according to the wall thickness and the position difference that is connected miscellaneous part of pen clip, generally be near approach connecting the position of miscellaneous part the bending distortion until fractureing, bending part as shown in Figure 5.Therefore adopt thermoplastic elastomer (TPE) and two kinds of materials of plastic material injection molded herein, utilize performances such as the good pliability of thermoplastic elastomer (TPE) and percentage elongation, after plastics pen clip bending angle excessive deformation fractures, elastomer portion is but still remained stationary, therefore pen clip can not come off from the main body of lettering pen, bending part as shown in Figure 6, elastomer still keeps pen clip not come off, thereby avoids the safety problem that causes the child to eat.

As shown in Figure 7, in the inboard projection 5 that clamping action has been set of pen clip, this protruding outer surface is coated with thermoplastic elastomer (TPE), and this coating both can be local the coating, also can be integral coating.

The inboard salient point that arranges of pen clip is for the key effect point of clamping than thin objects, particularly than the sliding paper of glimmer, generally has only this projection to contact with paper, if frictional force is less, causes slippage easily.Under the certain situation of chucking power, what influence frictional force is coefficient of friction, the general coefficient of friction of thermoplastic elastomer (TPE) is at 0.60-0.80, and the coefficient of friction of general plastics is about 0.15-0.30, therefore increase frictional force after adopting thermoplastic elastomer (TPE) to coat salient point, helped the thinner and smooth object of clamping.

Embodiment 2, and shown in Fig. 8-9, present embodiment discloses a kind of lettering pen, and this lettering pen uses the disclosed cap for brush in above-described embodiment.

Because the pen clip at the cap for brush has had the thermoplastic elastomer (TPE) cover layer, and pen clip generally protrudes from the cap for brush or its coupling part from the side top, there is bigger space to realize the shape of different curvature, like this when utilizing the conduction of the intrinsic heat of thermoplastic elastomer (TPE) and frictional behaviour, can adapt to different angles and rub or wipe.

Embodiment 3, present embodiment discloses a kind of cap for brush preparation method, the pen clip of cantilever beam structures is installed at the cap for brush, described pen clip adopts the double-shot moulding mode to form, and wherein adopts for the first time the part of plastic injection-moulded formation to be used for supporting and assembling, specifically as shown in figure 10, adopting for the second time thermoplastic elastomer (TPE) to form the surface coats, specifically as shown in figure 11, require the thermoplastic elastomer (TPE) of injection moulding for the second time functional with the material adhesive of injection moulding for the first time, the two is layering or peel off easily not.

The material that injection moulding is for the first time adopted comprises one or more in Merlon, polymethyl methacrylate, the fine copolymer of styrene-butadiene-propylene, the polyformaldehyde.

Adopt for the second time thermoplastic elastomer (TPE) to comprise in styrene-based elastomer, polyurethane elastomer, the polyamide elastomer one or more.

Claims

1. novel cap for brush, comprise that cap for brush body and employing cantilever beam structures are installed in the pen clip on the cap for brush, it is characterized in that: the pen clip top end adopts thermoplastic elastomer (TPE) to coat, and the minor axis of the zone that coats of thermoplastic elastomer (TPE) and cap for brush axis is less than or equal to cap for brush inside radius to distance.

2. the novel cap for brush according to claim 1 is characterized in that: the zone that pen clip top end thermoplastic elastomer (TPE) coats, it is arc top section along the normal profile of pen clip direction with along the shape of the axial section of cap for brush direction.

3. the novel cap for brush according to claim 1 is characterized in that: diastrophic part outer surface coating thermoplastic elastomer when pen clip bears deflection external force.

4. the novel cap for brush according to claim 1 is characterized in that: in the inboard projection that clamping action has been set of pen clip, this protruding outer surface is coated with thermoplastic elastomer (TPE).

5. a lettering pen is characterized in that: each described cap for brush among this lettering pen use aforesaid right requirement 1-4.