Abstract:
A clip for writing utensils such as a sharp pencil or the like comprising a clip piece including a pair of opposed insertion arms, said insertion arms being inserted into receiving grooves provided in side surfaces of a clip base formed integral with a holder of the writing utensil.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     This invention relates to a clip for writing utensils such as a sharp pencil or the like. 
     2. Description of the Prior Art 
     In order to secure such kind of clip to a holder of the writing utensil, various complex constructions have heretofore been used in practice. As a result, such conventional clip has the disadvantage that it becomes complex in working and assembling. 
     SUMMARY OF THE INVENTION 
     An object of the invention, therefore, is to provide a clip for writing utensils which comprises a holder including a clip base made integral with the holder and provided at both side surfaces thereof with grooves with which is engaged a clip piece and which is easy in working and assembling. 
     A feature of the invention is the provision of a clip for writing utensils comprising a holder, a clip base made integral with the holder, and a clip piece secured to the clip base, said clip piece including a pair of insertion arms extending rearwardly from the rear end of the clip piece substantially parallel with each other and each provided at its surface with an engaging portion projected inwardly therefrom and said clip base being provided at its side surfaces with a pair of receiving grooves extending in a lengthwise direction of the clip base, whereby, when said insertion arms are inserted into said receiving grooves, said engaging portions are struck into the base surface of said receiving grooves so as to firmly secure said clip piece to said clip base. 
     Further objects and features of the invention will be fully understood from the following detailed description with reference to the accompanying drawings. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a side elevational view of one embodiment of a clip for writing utensils according to the invention; 
     FIG. 2 is its plan view; 
     FIG. 3 is a plan view of a clip piece of the clip shown in FIG. 1; 
     FIG. 4 is a side elevational view of a clip base shown in FIG. 1; 
     FIG. 5 is a plan view of another embodiment of a clip piece according to the invention; 
     FIG. 6 is a plan view of a clip base corresponding to the clip piece shown in FIG. 5; and 
     FIG. 7 is a plan view of a further embodiment of a clip base according to the invention, partly shown in section. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     FIGS. 1 to 4 show one embodiment of a clip for writing utensils according to the invention. In FIGS. 1 to 4, reference numeral 1 designates a holder of a writing utensil such as a sharp pencil. The holder 1 is provided at its front end with a cap 2 threadedly engaged with the holder 1 and at its rear end with a knock portion 3. The holder 1 is provided at its rear portion with a frustum-shaped clip base 4 made integral with the holder 1 and extending along the outer periphery in a lengthwise direction of the holder 1. The clip base 4 is provided at its both side surfaces with a pair of receiving grooves 5, 5 extending in a lengthwise direction of the holder 1. 
     Reference numeral 7 designates a clip piece composed, for example, of a metal sheet. The clip piece 7 is provided at its one end with a rectangular cut 10 to form a pair of opposed insertion arms 8, 8. The other end of the clip piece 7 is wound into a roll urged against the holder 1. 
     As clearly shown in FIG. 3, the insertion arms 8, 8 extend rearwardly from the rear end of the clip piece 7 substantially parallel with each other. The insertion arms 8, 8 are spaced apart from each other by a distance which is substantially equal to the distance between the base surfaces of the receiving grooves 5, 5 provided in the side surfaces of the clip base 4. Each insertion arm 8 is provided at its front end with a hook-shaped engaging portion 9 projected inwardly. 
     In the clip constructed as above described, when the insertion arms 8, 8 of the clip sheet 7 are inserted into the front ends of the receiving grooves 5, 5 of the clip base 4 and slidably moved backwardly in the lengthwise direction of the clip base 4, it is possible to fit the clip piece 7 to the clip base 4. When the insertion arms 8, 8 arrive at their given position, each engaging hook projected inwardly from the front end of the insertion arm 8 is struck into the base surface of each receiving grooves to form a depression 6 as shown in FIG. 4, and as a result, the clip piece 7 is reliably secured to the clip base 4. 
     Each insertion arm 8 may be provided at its inner surface with a plurality of saw-tooth shaped indentations 9&#39;, as shown in FIG. 5. In this case, when the insertion arm 8, 8 are inserted into the receiving grooves 5, 5, depressions 6&#39;, shown in FIG. 6, corresponding to the saw-tooth shaped indentations 9&#39; are formed in the base surface of the receiving groove 5 of the clip base 4. As a result, the clip piece 7 engages through a number of indentations 9&#39; with the clip base 4, so that the clip piece 7 is more reliably secured to the clip base 4. 
     As shown in FIG. 4, the rear end of the receiving groove 5 provided in the clip base 4 is made open. Alternatively, the rear end of the receiving groove 5 may be closed by the rear end of the clip base 4 as shown in FIG. 7. In this case, the rear ends of the insertion arms 8, 8 are hidden by the rear end of the clip base 4, thereby improving a design of appearance. 
     As stated hereinbefore, the invention is capable of inserting the clip piece into the clip base made integral with the holder and hence of securing the clip piece to the holder in an easy and reliable manner, thereby remarkably simplifying the clip in working and assembling.