JPH0750231Y2 - Support structure of cursive body in brush axis - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to improvement of a support structure for a writing body in a writing instrument.

(Prior Art) Conventionally, there is a writing body in which a writing body of this type (for example, a replacement ink storage body) is housed in a writing shaft and the writing tip portion is exposed outside the shaft, and at this time, the rear end of the writing body is written. In order to elastically support the spring with a spring, there is a separate bearing at the rear end of the shaft and a spring attached to this, or one that fixes the spring to the inner bottom of the rear end of the shaft with an adhesive or the like. It is used.

(Problems to be solved by the invention) However, among the above-mentioned conventional ones, the one in which a separate support member is attached to the rear end of the brush shaft has a bad appearance and the cost is increased because a separate member is prepared. It requires installation work. In addition, if a spring is attached to the rear end of the shaft with an adhesive, it is difficult to attach the spring to the attachment position accurately, and there is a risk of falling off.

Therefore, the present invention is intended to improve the drawbacks of the above-mentioned conventional ones, and is intended to support the writing body by attaching the elastic body at an accurate position with a simple structure.

(Means for Solving the Problem) Therefore, when disposing an elastic body in contact with the rear end of the writing body at the inner bottom of the rear end of the writing shaft, the elastic body is supported by a coil spring, and the other end of the coil spring is supported. It is made by holding and fixing in front of the inner wall of the brush shaft.

(Operation) Since the elastic body is supported by the coil spring, the elastic body is pushed into the rear end of the brush shaft, and the other end of the coil spring is held and fixed to the inner wall in front of the brush shaft. Abut the rear end of the cursive body and screw it into the tip brush shaft,
Since the tip writing portion of the above-mentioned writing body housed inside is projected and locked from the front of the tip writing shaft, it is supported by an elastic body and a coil spring and only fixedly held in the writing shaft. The work can be done easily.

(Example) This will be further described with reference to an example shown in the drawings. (1) is a rear brush shaft, the outer surface of the rear end part is appropriately formed on a spherical surface, and its front opening is joined and screwed to the rear end opening (7) of the front brush shaft (2). Although not shown in the drawing, the front writing shaft (2) has a hole for exposing the writing portion of the writing body (8), and only the writing portion projects outward, and the step is locked so that there is no further projection. It has a section.

On the other hand, a support ring (7) having a locking edge (9) for locking the end of the brush shaft (1) is fitted into the front end opening of the brush shaft (1). 1) Lock it on the inner wall to prevent its escape. Reference numeral (5) is a mounting edge projecting and extending inward obliquely upward from the support ring (7), and a hole (10) for accommodating in the writing shaft is provided in the center thereof through the writing body (8).

(3) is a coil spring along the inner wall of the barrel (1), the front end of which is approximately equal to the diameter of the inner wall of the barrel (1) and the rear end of which is the rear end (11) of the cursive body (8). It has a diameter sufficient to support the abutting elastic body (4). Here, the elastic body (4) is the same body as the coil spring (3) as shown in FIG. 2 and is a spring protruding into the coil spring (3). It may be fitted on the rear end of the spring (3). Further, as long as it is an elastic body capable of elastically supporting the writing body, it can be formed of a leaf spring, a rubber body or the like.

The support ring (5) not only holds the end between the support ring (5) and the inner wall of the barrel (1) as in this embodiment, but also receives the end of the coil spring (3). May be provided, or the support ring may be simply fixed.

Since this embodiment is as described above, when the coil spring (3) is placed on the support ring (5) and the support ring (5) is fitted and fixed from the open end of the rear brush shaft (1), the support is obtained. The front end of the coil spring (3) is held between the fitting (5) and the inner wall of the barrel (1), and the rear end of the coil spring (1) is located at the inner bottom of the rear end of the brush shaft (1) and is composed of a pressing spring. (4) is arranged, and the front end of the pressing spring (4) comes into contact with the rear end of the writing body, and the writing is made by screwing the rear barrel (1) and the front barrel (2). (8) is supported in the barrel without swinging or moving up and down.

(Advantages of the Invention) As described above, the rear end of the shaft cylinder can be provided with a separate mounting portion, and the pressing elastic body can be arranged with a simple structure, improving the appearance and reducing the cost. It has an excellent effect that can be achieved.

[Brief description of drawings]

FIG. 1 is a partial sectional view of an essential part of an embodiment of the present invention, and FIG.
The figure shows a perspective view of a coil spring that supports a pressure spring. 1 ... Rear barrel, 2 ... Front barrel, 3 ... Coil spring, 4 ... Press spring, 5 ... Mounting edge, 7 ... … Support ring, 8… cursive

Claims (1)

[Scope of utility model registration request] 1. An elastic body projecting in the axial direction is arranged on the inner bottom wall of the rear end of the brush shaft. The elastic body is supported by the end portion of a coil spring, and the other end portion of the coil spring is attached to the brush. A writing body support structure that is held and fixed in front of the inner wall of the shaft, and an elastic body is in contact with the rear end of the writing body housed in the writing shaft.