JPH01234898A - Neck for stringed instrument - Google Patents

Abstract

PURPOSE: To selectively perform deformation to an arch shape for an instrument neck and to house or take out a neck rod to/from the blind hole of the instrument neck by providing an additional means for shortening the valid length of a second rod member to the valid length of a first rod member. CONSTITUTION: A rod part is composed of a first relatively short neck rod member 2 and a second relatively long neck rod member 3 and both neck rod members are firmly connected with each other at end parts by a rivet. The end part 5 of the relatively short neck rod member 2 is provided with a male screw 6 and the female screw 7 of a union nut 8 is suited to the male screw. The end part 9 of the relatively long neck rod member 3 is provided with a female screw 10 and a male screw 11 of an adjustment screw 12 is suited to the female screw. Thus, this neck rod is made insertable to the blind hole of the neck of the instrument and is firmly fixed to the blind hole by easily deforming the respective rod members in a desired direction and turning them to the arch shape, the neck rod is not made to erroneously slide off from the blind hole and the neck rod is immediately withdrawable.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention consists of two elongated rod members running parallel to each other and substantially side by side and adjacent to each other, one ends of which are firmly connected to each other. and, for example, rivets, while the other free ends of these rod members effectively shorten the length of one first rod member relative to the effective length of the other second rod member. and a means for shortening the effective length of the first rod member, in which the neck rod is attached to the bottomed hole so that it can be approached from the open end of the elongated bottomed hole in the neck of the instrument. a stringed instrument that can be inserted from the upper free neck end;
Especially regarding neck rods for bass guitar.

(Prior Art and Problems to be Solved) This type of neck rod is inserted into an elongated bottomed hole in the neck of a musical instrument. This neck rod is retained in its bottom hole as soon as a certain deformation of one of the rod members is achieved, as will be described in detail below. Therefore, separately fixing the neck rod to the bottomed hole of the neck of the instrument is
Not necessary. By rotating the union nut,
The effective length of one rod member relative to the other rod member is reduced. For this reason, the neck rod, which runs in a straight line in front of the instrument, is curved into a bow shape, and the neck of the instrument is also pulled into a bow shape, pointing either to its convex side or to the strings resting on the fingerboard of the neck. Thereby it acts against the relatively strong tension exerted by the strings on the neck of the instrument. Otherwise, the string tension may bend or pop the neck. however,
In the case of stringed instruments, especially special forms of bass guitars, there is a requirement that the neck rod exert a force on the neck of the instrument that is in the same direction as the tension in the strings (e.g. due to the wood of the neck or for other reasons). also) occurs. However, in this case, the neck brace described above is not suitable.

From U.S. Pat. tightly bound. Beforehand, the neck rod must be bent in the respective desired direction at the factory. For this reason, and in particular, a rigid anchoring within the head of the instrument is complicated and expensive to manufacture. Moreover, such a neck rod can no longer be replaced when it becomes useless or damaged. This differs fundamentally from the arrangement according to the generic concept of claim 1.

In contrast, an object of the present invention is to enable the neck of the instrument to be selectively deformed into a convex or concave arch shape, and to accommodate the neck rod loosely in the bottomed hole of the instrument neck. The object of the present invention is to form the neck arm according to the preamble of claim 1 in such a way as to preserve the benefits derived from the invention.

(Means for Solving the Problem) To solve this problem, first, starting from the generic concept of claim 1, the characteristic feature of claim 1, that is, the effective length of the first rod member is additional means for shortening the effective length of the second rod member are provided and the means are present at or engage the free end of the second rod member;
It can also be seen that it can be approached from the open end of the bottomed hole. Such a neck rod can also be used for the application mentioned at the outset, i.e. to transform the neck rod into the concave curve mentioned above, or when the concave side of the arch is directed towards the fingers or strings of the instrument. The same arch shape can also be used in the case of the use that a cervical rod housed in the neck has. The same cervical rod can therefore be used for both possibilities, which saves money in terms of manufacturing. This not only greatly simplifies the storage of inventory for the maker and also for the instrument assembler.Finally, the user, i.e. the user of the guitar, is therefore required to make sure that he It may be possible to select a neck rod adjustment or arch shape that seems suitable. Such a neck rod can be inserted into a bottomed hole in the neck of the instrument, and each rod member can be oriented in the desired direction. By making it into an arched shape, it is firmly fixed to the bottomed hole, so the neck rod cannot accidentally slip out of the bottomed hole.From the open end of the bottomed hole, both neck rods are The parts can be adjusted in the respectively desired manner. Particularly advantageous is an arrangement in which the neck rod part does not protrude from the open end, ie cannot be seen from the outside. The neck rod can be immediately pulled out.

Starting from the general idea of claims 1 and 3, the features of claim 2 are characterized by the possibility of adjusting the two rod parts which are particularly easy to access and which are easily accessible from the open end of the bottomed hole. DB-GM 7824673), the features of claim 3 describe a particularly advantageous and therefore particularly advantageous embodiment of the invention.

In this case, the known external thread of the shorter neck rod part and the associated union nut can additionally be used, and only the internal thread and the adjustment screw of the second relatively long neck rod part need to be provided.

Starting from this known neck rod, it becomes clear that the repositioning costs in production are relatively low. Also, the user has little need to change his mind regarding this neck rod already known to him, but only has to become familiar with the additional adjustment means in the form of the above-mentioned adjustment screws.

A further advantage resides in that the thickness of this end region of the cervical rod is not increased compared to known designs.

Only its length is slightly increased by the thickness of the adjusting screw head, but this is not really important. In order to prevent the union nut from rotating undesirably when the adjusting screw is activated, it can be provided with a safety device according to claim 4 or 5 as a precaution.

(Example) DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments.

The neck rod, generally indicated at 1, consists of two neck rod members, a first relatively short neck rod member 2 and a second relatively long neck member 3. The two neck rod parts are rigidly connected to each other at their ends, which are on the right in the drawing, for example by rivets shown in dotted lines. Their opposing free ends, ie on the left in the drawing, are formed as follows.

The end 5 of the relatively short neck rod member 2 has a male thread 6 to which the female thread 7 of the union nand 8 fits. The end 9 of the relatively long neck rod part 3 is provided with an internal thread 10, into which is fitted an external thread 11 of an adjusting screw 12, which will be described in more detail in FIG. 5.6. screw 6.7
It is particularly advantageous if the screws are in the opposite direction to the thread 10.11. In that case, screw 6.7 is clockwise and screw 10.1
1 is conveniently counterclockwise. This ensures that the union nut is not inadvertently dragged away by the action of the adjusting screw. However, it is also possible instead to form the pitch of the thread 10.11 different (larger or smaller) than the pitch of the thread 6.7. This also prevents the union nuts from rotating together, which is undesirable.

Furthermore, different pitches can also be used if it is desired to vary the transmission ratio of the clamping force from the adjustment means to the neck rod member accordingly.

The cervical rod parts 2.3 lie close together and are separated from each other only by a narrow gap 13. After the union nut 8 is screwed in, its inner surface 14 abuts against the end surface 15 of the neck rod member 3.

Subsequent further rotation of the union nut causes it to move in the direction of arrow 16 in FIG. When the length of the cervical rod member 2 is effectively shortened in this way, the cervical rod member 3 is effectively elongated, so that the cervical rod member 3 becomes arched upward ( Figure 3). The convex side of this arch is connected to the fingerboard 26 (the individual details of the assembly of the neck rod and the neck of the instrument can be deduced from FIG. 7), and therefore the instrument 31.
The neck 17 is directed towards the chord 27 of the neck 17, which neck is indicated by a dash-dotted line in FIG. The strings and fingerboard are on the side of the neck, indicated at 17'. There, the arch mentioned above is
The figures are slightly exaggerated in the drawings for better explanation.

As an additional adjustment means and in order to shorten the effective length of the second neck rod member 3 with respect to the effective length of the first neck rod member 2, the above-mentioned internal thread 10 coupled to the adjustment screw 12 is provided. Helpful. The male thread 11 of the adjustment screw matches the female thread 10.

The head 18 of the adjusting screw forms, with its end face 19 on the left side in FIG. 5.6, a stop that rests against the end face 20 of the union nut. In the starting position of this adjustment process according to FIG. 5, the surfaces 19, 20 are abutting and the union nut actually surrounds both neck rod parts 23, but the end face 15 of the neck rod part 3 and the bottom of the union nut 22 is screwed into the screw 6 such that a distance a still remains between the inner end surface 14 of the holder 22 and the inner end surface 14 of the holder 22.

For example, and according to a particularly advantageous embodiment, the distance a amounts to 4 mm. If the adjusting screw I2 is now rotated in such a direction as to move the cervical rod member 3 to the left along the axis 23 of the adjusting screw in the direction of the arrow 24 (distance a is then shortened), this will cause the upper cervical The rod member 3 is effectively shortened and the lower cervical rod member 2 is therefore effectively lengthened. The adjusting screw 12 can be rotated until the distance a is practically zero according to FIG. The neck rod member 2, which is lower in the drawing, arches downward so that its recessed side 2' is connected to the head side 1, which includes the fingerboard 26 and the neck 27.
It is directed towards 7'.

In summary, the arrangement with a union nut and without adjusting screws according to FIGS.
is subjected to an arcuate force in the direction of arrow A, while inserting and rotating the adjusting screw 12 according to FIGS.
A force opposite direction A is exerted on the neck 17. Of these, only the left force is indicated by arrow B in FIG.

The head 18 of the adjusting screw 12 can have a hexagonal hole 21 for inserting a bayonet wrench. the same thing,
It can be provided in the through hole 25 of the union nut 8.

Therefore, the adjusting screw 12 and the union nut 8 can be operated individually by inserting a corresponding insertion wrench from the free end of the bottomed hole 29 approximately in the direction of the arrow 30.

[Brief explanation of the drawing]

1 is a side view of the neck rod according to the invention without a union nut, and FIG. 2 is a side view according to FIG. 1 with a union nut, without the neck rod being deformed. FIG. 3 is a side view according to FIG. 1 or 2 with a union nut, in which the neck rod is deformed convexly and the neck of the instrument is shown schematically. Fourth
The figure is a cross-sectional view taken along line IV-IV in Figure 2;
FIG. 5 is a partial cross-sectional and enlarged view of the left end of FIG. 2 with the adjustment screw when the neck rod is not deformed;
FIG. 6 is a partial sectional view according to FIG. 5 when the neck rod is deformed into a concave shape, and the neck of the musical instrument is shown by a chain line. 7th
The figure shows the arrangement of the neck rod member in the neck of a stringed instrument, as well as the neck partially in longitudinal section and partially in side view. 2...First rod member 3...Second rod member 6...Male thread 8...Union nut 10...Female thread 12...Adjustment screw 2nd...Open end 29...・Bottomed hole

Claims (1)

[Claims] (1) Consisting of two elongated rod members running parallel to each other and substantially side by side and adjacent, one ends of these rod members being firmly connected to each other, e.g. with rivets. ,
while the other free ends of these rod members have means for effectively shortening the length of one of the first rod members relative to the effective length of the other second rod member, with the As a means for shortening the effective length of the first rod member, the neck rod can be inserted into the bottomed hole from the upper free neck end so that it can be approached from the open end of the elongated bottomed hole in the neck of the instrument. In some neck rods for stringed instruments, especially bass guitars, the first rod member (2)
additional means are provided for shortening the effective length of the second rod member (3) with respect to the effective length of the second rod member (3), and these means are present at the free end of the second rod member (3). or a neck rod, characterized in that it engages therein and is likewise accessible from the open end (28) of the bottomed hole (29). (2) A cervical rod according to claim 1, wherein the shortening of the first rod member is carried out by means of a screw or a nut, as an additional means for shortening the effective length of the second rod member. Or a neck rod characterized in that it is provided with a nut and is accessible from the open end of the bottomed hole. (3) the first rod member has an external thread and is shorter than the second rod member, and is then further provided with a union nut adapted to the external thread, which union nut is connected to the second relatively longer rod member; A cervical rod according to claim 1 or 2, characterized in that the end (9) of the second rod member (3) forms or has a stop for the end face of the free end of the second rod member (3).
10) and is provided with an adjusting screw (1 2) adapted to the internal thread with a screw (11), which adjusting screw particularly advantageously has a stop (18, 1 9) in the form of a screw head. , characterized in that this stop is formed or determined to abut the end of the first relatively short rod member (2) or a union nut (8) screwed therein; The neck rod according to claim 1 or 2. (4) The female thread of the end (9) of the second rod member (3) has a rotation direction opposite to the male thread of the first rod member (2). , the neck rod according to claim 3. (5) The female thread (10) of the end (9) of the second rod member (3)
The neck rod according to any one of claims 1 to 4, characterized in that the pitch of the threads of the first rod member (2) is different from the pitch of the threads of the external thread of the first rod member (2). . (6) The cross section of the free ends (5, 6) of the rod members (2, 3) is approximately half of a ring cylinder in each case, the outer circumference of which has an external thread (6) or is fitted with a union nut (8). and the inner periphery of the ring cylinder is female threaded (10
) or adapted to the shaft (23) of the adjusting screw (12) (FIG. 4). Necklace. (7) Any one of claims 1 to 6, characterized in that the head (18) of the adjustment screw (12) is provided with an inner edge opening for inserting an insertion wrench. One of the things mentioned is the neck. (8) Any one of claims 1 to 6, characterized in that the bottom (22) of the union nut (8) is provided with an inner edge opening for inserting an insertion wrench. Necklace described in . (9) The neck rod according to claim 7 or 8, characterized in that a hexagonal socket is provided as the inner edge opening.