JPH0133665Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an auxiliary rail attaching/detaching device for a hand knitting machine.

Hand knitting machines are well known in which a carriage can be placed and held on the outside of the needle bed using a removably provided auxiliary rail to speed up and accurately perform knitting operations.

In order to simplify the structure of the above-mentioned auxiliary rail, one wire rod is bent into a U-shape (for example,
Although there is a Japanese Utility Model Publication No. 49-40363), conventional structural devices of this type using wire rods had the following disadvantages.

That is, the outline of the structure is shown in Fig. 1. 1 is a needle bed, 2 is a side plate, and 3 is an auxiliary rail formed from one wire rod in a substantially U-shape. The parts 3a and 3b are bent, and the legs thereof are provided with protrusions 3c and 3d, respectively.

These leg portions 3a and 3b are connected to the insertion portion 2 of the side plate 2.
a and 2b at the same time, and the protrusion 3c of the front leg 3a is locked in the locking groove 1a of the needle bed 1. Further, the protruding portion 3d of the rear leg 3b is engaged with a retaining groove of a mounting member (not shown) attached to the lower part of the needle bed 1, and both are positioned in the axial direction.

Further, each of the protrusions and the locking groove are elastically locked to the husband by pressing each of the separately provided elastic members (not shown).

Then, insert and remove the auxiliary rail 3 to insert and remove the needle bed 1.
It is designed to be attached and detached from the side.

Although this type has the advantage of using a single wire for the auxiliary rail, it also has the following drawbacks.

In other words, the auxiliary rail and the needle bed side are only locked together by being pressurized at two points, the protrusion and the engagement groove, by the elastic member, and when the carriage is operated on the auxiliary rail, the carriage is biased in the front and back direction. When a pressing force is applied, the auxiliary rail itself is twisted and displaced by the rotational force, causing an inclination. This unstable phenomenon causes the inconvenience that the carriage easily comes off the auxiliary rail.

Another drawback is that the auxiliary rail easily comes off from the needle bed side.

The present invention aims to eliminate the above-mentioned defects of conventional products in a device using an auxiliary rail made of wire, and will be described below.

The auxiliary rail is almost the same as the conventional type, with a carriage mounting part bent into a U-shape using a single wire, parallel to the U-shape, with steps in the vertical direction, and front and rear legs that are inserted into the side plates. form a section.

In addition to the step, only the front leg portion (insertion portion) includes a continuous support portion that is bent at an appropriate length toward the middle of the U-shape.

In this auxiliary rail, both the front and rear legs (insertion parts) do not have protruding parts unlike conventional products. Therefore, there is no supply groove on the needle bed side, and there is no need for an elastic member or other attachment member to press and hold these engagements.

The resin side plate of this invented device has two fitting holes having appropriate lengths for receiving the front and rear legs of the auxiliary rail to be inserted, and supporting the continuous support portion formed on the front leg. It is only necessary to provide three concave grooves for this purpose.

In addition, when installing the auxiliary rail, it is only necessary to insert the front and rear legs into the fitting holes in the side plate, and at the same time, the support part of the front leg is received and supported in the groove of the side plate, so it is not necessary to install the auxiliary rail. This prevents the twisting phenomenon seen when using the auxiliary rail, and prevents the carriage from coming off. In addition, due to the engagement between the support portion and the recessed groove, there is no fear that the attached auxiliary rail will slip out from the side plate unless the detachment operation is performed.

In addition, since an appropriate slope is provided on the upper part of the outer surface of the outer wall of the groove in the longitudinal direction, when the auxiliary rail is installed, the support part of the front leg of the auxiliary rail can enter smoothly without getting in the way. This prevents any loss or damage to the company.

At the time of detachment, the support portion and the groove can be easily disengaged by slightly twisting the front leg side upward, making this attachment/detachment operation extremely easy. As mentioned above, this auxiliary rail attachment/detachment device overcomes the deficiencies of the previous model and (1) is easy to attach and detach, and does not come off after attachment.

(2) The side plate is integrally molded with resin and is easy to work with, and the auxiliary rail is securely locked at three points: the two fitting holes and the long groove, so there is no need to worry about the protruding parts of both legs or the needle bed corresponding to them. There is no need to process locking grooves, etc.

(3) It has the advantages of not requiring elastic members or mounting members, reducing and simplifying the number of component parts, and rationalizing the work and costs.

Hereinafter, in order to make the configuration of this invented device more detailed, one embodiment will be described with reference to FIGS. 2 and 3.

FIG. 2 shows a half-section of the appearance of a hand knitting machine equipped with an auxiliary rail according to the embodiment, where 4 is a needle bed, 5 is a side plate, and 6 is an auxiliary rail made of a wire bent into a substantially U-shape. As is clear from FIG. 3, the auxiliary rail 6 has front and rear legs 6 each having a step H.
a, 6b, and only the front leg 6a is marked with the symbol l.
As shown, a support portion 6c is formed that is continuously bent toward the middle of a U-shape.

The side plate 5 is provided with fitting holes 5a and 5b that receive the front and rear legs 6a and 6b of the auxiliary rail in the axial direction. Further, 5c is a concave groove for receiving a support portion 6c provided on the front leg side of the auxiliary rail;
d is an inclined surface provided above the outer wall surface of the groove.

The configuration of the auxiliary rail attaching/detaching device according to the present invention is as described above, and can well exhibit the aforementioned effects.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the configuration of a conventional auxiliary rail attaching/detaching device, Fig. 2 is a half-cut external view of a hand knitting machine equipped with the auxiliary rail attaching/detaching device of the present invention, and Fig. 3 is a main part of the device of the present invention. FIG. 4...needle bed, 5...side plate, 5a, 5b...fitting hole, 5c...concave groove, 6...auxiliary rail, 6a, 6
b... Leg part, 6c... Support part.

Claims (1)

[Scope of utility model registration request] In a hand knitting machine in which an auxiliary rail is detachable from the side plate of the needle bed, the auxiliary rail is formed by bending a wire rod into a substantially U-shape to form front and rear legs, and the front leg side of the auxiliary rail is is constituted by a series of support parts extending in the middle direction of the U-shape along the side plate, and the side plate receives the support part with fitting holes that engage with the front and rear legs of the auxiliary rail, respectively. An auxiliary rail attaching/detaching device for a hand knitting machine, which is provided with a groove for supporting and locking.