CN203864225U - Special triangular pencil holder - Google Patents

Abstract

Provided is a special triangular pencil holder. The outer frame of the cross section of the pencil holder is defined by connecting two identical concave arc surfaces, a big convex arc surface and a small convex arc surface in a spaced mode, and a hole matched with a pencil lead is formed in the center of the outer frame. The two concave arc surfaces and the big convex arc surface are evenly distributed with 120-degree included angles. The curvature radius of the big convex arc surface is identical to that of the small convex arc surface, the big convex arc surface and the small convex arc surface are located on the same circumference oppositely, and the central line of the big convex arc surface and the central line of the small convex arc surface are located on the same diameter. When the special triangular pencil holder is used, the big convex arc surface is laid on a middle finger, a thumb and an index finger are arranged on the concave arc surface on the two sides for applying force to hold a pencil, and the pencil can be used flexibly for writing or drawing by turning a wrist. Due to the fact that the arranged concave arc surfaces are matched with the convex surface of the fingers, comfortable hand feeling can be brought to a user.

Description

Special-shaped triangle pen holder

Technical field

The utility model relates to a kind of penholder, and relates more specifically to a kind of special-shaped triangle pen holder.

Background technology

In writing implement for for the penholder of handengagabie portion, as the penholder section of pencil commonly: circular, regular hexagon or equilateral triangle, it is oval-shaped also having.Its profile is simple, is beneficial to processing, but focusing surface while thering is no specially fixed gripping, and feel is poor, and is difficult for while being put on desktop stablely, can optionally roll by external force.

Summary of the invention

The purpose of this utility model, is to provide a kind of fixing gripping surface that has, thereby can obtain having the desirable special-shaped triangle pen holder that grips feel.

The utility model is realized by following design:

A kind of special-shaped triangle pen holder, the section housing of described penholder is to be connected and to surround separately with a large convex arc surface, a little convex arc surface by two concaved circular cambered surfaces that are equal to, heart place is provided with a hole matching with lead for retractable pencil therein.

Between two concaved circular cambered surfaces and a large convex arc surface, and between two concaved circular cambered surfaces, be mutually 120o uniform.

Described large convex arc surface is identical with the radius of curvature of little convex arc surface, and relatively on same circumference, both center lines are on same diameter.

But material timber of the present utility model, or papery, or plastics.

Effect of the present utility model is clearly:

Under normal circumstances, no matter be to get used to holding a pen with the right hand with the author, still getting used to holding a pen with left hand, is generally all in the situation that laying down the pen or brush with middle finger, firmly pen is held respectively by the thumb with proficiency and forefinger simultaneously.In the time adopting the utility model, by the large convex arc surface on penholder, pen to be put on middle finger, thumb and forefinger are positioned over respectively on two concaved circular cambered surfaces that are located at little convex arc surface both sides, the concaved circular cambered surface arranging is suitable with the finger face that is convex, therefore can give user a comfortable feel.In the time that thumb and forefinger are exerted pressure simultaneously, middle finger, thumb and forefinger three-point fix just can hold on pen, while now rotating wrist again, can wield the pen neatly and write or draw a picture.Two concaved circular cambered surfaces that arrange, employing " being equal to ", be that user, while using the right hand hold a pen or use left hand to hold a pen, can not be subject to any impact no matter be.

The large convex arc surface and the little convex arc surface that arrange, adopt identical radius of curvature, can simplify manufacturing procedure and reduce technological equipment.

Because outer surface of the present utility model is to be connected with concave arc cylinder and to be formed the irregular non-face of cylinder by little dome arc column face, concave arc cylinder, large dome arc column face successively, therefore in the time being placed on desktop, must be to get the stable shape that its concave arc cylinder contacts with desktop, pen also just can arbitrarily not roll on the table again.

Brief description of the drawings

Fig. 1 is the pencil schematic diagram that adopts the special-shaped triangle pen holder of the utility model.

Fig. 2 is the left view of Fig. 1.

In figure: 1---penholder, 2---lead for retractable pencil, 3---large convex arc surface, 4---concaved circular cambered surface, 5---little convex arc surface.

Detailed description of the invention

Below in conjunction with the description of drawings and embodiments, to embodiment of the present utility model, be described in further detail:

As depicted in figs. 1 and 2, be a kind of pencil that adopts the special-shaped triangle pen holder of the utility model, it is made up of traditional lead for retractable pencil 2 and penholder described in the utility model 1.

The section housing of described penholder 1, as shown in Figure 2, is to be connected and to surround separately by two concaved circular cambered surfaces that are equal to 4 and a large convex arc surface 3, a little convex arc surface 5, and heart place is provided with a hole of mating with lead for retractable pencil 2 therein.Centre bore in the present embodiment and lead for retractable pencil 2 are combined closely, and are beneficial to protect lead for retractable pencil 2.If for propelling pencil, now the centre bore in penholder 1 should be a bit larger tham lead for retractable pencil 2, and under the prerequisite at protection lead for retractable pencil 2, lead for retractable pencil 2 can freely slide into, skid off.

No matter be to hold a pen with the right hand, still hold a pen with left hand, pen is all by the large convex arc surface 3 on penholder 1, pen to be put on middle finger, is placed on respectively on two concaved circular cambered surfaces 4 being located at little convex arc surface 5 both sides with thumb and the forefinger of hand.The setting of concaved circular cambered surface 4, can be suitable with the finger face that is convex, thereby give user a comfortable feel; " being equal to " of two concaved circular cambered surfaces 4, arranges, no matter ensured with the author it is to hold a pen with the right hand, the effect while still holding a pen with left hand is all constant.In the time that thumb and forefinger are exerted pressure simultaneously, middle finger, thumb and forefinger three-point fix just can hold on pen, in the time rotating wrist again, just can wield the pen neatly for writing or drawing a picture.

In order reasonably to distribute the layout that holds a pen and exert oneself, between two concaved circular cambered surfaces 4 and a large convex arc surface 3, and between two concaved circular cambered surfaces 4, be mutually 120o uniform.So, middle finger, thumb and forefinger three anchor points are that to be 120o uniform, gesture suitably, exert oneself evenly and laborsavingly, be difficult for tired.

For the ease of processing, described large convex arc surface 3 is identical with the radius of curvature of little convex arc surface 5, and relatively on same circumference, both center lines are on same diameter.But the material timber of selecting, or papery, or plastics.

As the conversion of the present embodiment, penholder described in the utility model, except the pencil for general, also can be used for propelling pencil, or ballpoint pen, ballpoint pen and pen etc.

Claims (4)

1. a special-shaped triangle pen holder, it is characterized in that: the section housing of described penholder 1 is to be connected and to surround separately by two concaved circular cambered surfaces that are equal to 4 and a large convex arc surface 3, a little convex arc surface 5, and heart place is provided with a hole matching with lead for retractable pencil therein.

2. special-shaped triangle pen holder according to claim 1, is characterized in that: between two concaved circular cambered surfaces 4 and a large convex arc surface 3, and between two concaved circular cambered surfaces 4, be mutually 120o uniform.

3. special-shaped triangle pen holder according to claim 2, is characterized in that: described large convex arc surface 3 is identical with the radius of curvature of little convex arc surface 5, and relatively on same circumference, both center lines are on same diameter.

4. special-shaped triangle pen holder according to claim 1, is characterized in that: but its material timber, or papery, or plastics.