JPS59140915A - Nut - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a nut which is axially divided into at least two parts, and which includes a screw thread so as to fix said two parts to each other when tightening the nut. Concerning the hanging nuts that are attached to the surroundings.

Nuts of this type have been known for a long time. These nuts can preferably be attached to screws and bolts that do not have a free end into which a conventional screw can be screwed, such that the nut can be fitted around the screw in a tightening position.

The known nuts of the Jm type have a rough structure and are therefore expensive to manufacture. Therefore, although nuts of this type offer great advantages in certain applications, they have not met with satisfactory results and are therefore currently only used for pressure compensation.

The object of the invention is to produce a nut of the above-mentioned type which is very simple in construction and therefore inexpensive to manufacture. In addition, according to the invention, the accuracy conditions to be met during manufacturing are relatively moderate.

Accordingly, the present invention provides a nut having an internal thread and divided into at least two parts on the same axis, the two parts being screwed together so that one is fixed to the other when the nut is tightened. The present invention relates to a nut which can be wrapped around the screw to surround said screw.

The nut according to the invention comprises a first part forming a nut, for example a hexagonal nut, with an internally threaded central hole, said nut being provided with an axial groove, said axial groove being substantially radial. only an internally threaded portion is formed which is oriented in the direction and extends between the surface of the body of the nut and said internally threaded hole, thereby forming only a portion of the circumference, preferably only a half portion of the circumference; , a screw or a corresponding member is adapted to be inserted through the groove so as to abut the inner threaded portion with its screw, and is further inserted axially into the groove and thereby causes the screw to a second portion substantially occupying a groove portion unoccupied by the first portion, the second portion having a substantially semicircular cross-section in a plane perpendicular to the axial direction; substantially connectable to the outer diameter of a screw inserted into the part, and wherein said groove has, for example, a dovetail-shaped cross-section and tapers outwardly towards the surface of said body. It is characterized in that it is designed so that said second part is fixed against outward radial movement.

The invention will now be explained in more detail with reference to some embodiments and the accompanying drawings.

1 shows a first part 1 of a nut according to the invention, and FIG. 2 shows a second part 2 of said nut. The first part 1 consists of a nut 1, for example a hexagonal nut, with an internally threaded central hole 3. The nut 1 has an axially extending and substantially radially oriented groove 4. A groove 4 extends between the surface 5 of the body of the nut and said hole 3 with a thread 6. Natsu 1
Compared to a conventional nut, a part is missing due to the groove 4, so that the internal thread 60 part 7 is formed only in a part of the circumference, preferably in half of the circumference.

A screw, ie a corresponding part (not shown), is inserted through said groove 4 until its outer thread abuts said part 7 of the inner thread 6.

Said second part 2 is adapted to be inserted axially into the groove 4. The shape of the second part 2 matches the shape of the groove 4, so that the second part 2 substantially occupies the groove part. The groove portion 4 extends to the outer diameter of the screw inserted into the first portion 1 by a portion 8 in which the second portion has a substantially semicircular cross section in a plane perpendicular to the axis. Since they are connected, they are not occupied by the screws.

The groove 4 is designed, for example, to have a dovetail shape in a cross section perpendicular to the S-line direction and to be tapered outward as it curves around the fuselage surface, thereby causing the second portion 2 to radially outward. is locked so that it cannot be moved. Groove 4
The widest part 9 of is preferably located at the bottom 10 of the groove and is open in said threaded part 7.

The width of the groove 4 exceeds one diameter of the threaded portion 7, so that a substantially radially extending shoulder 11 or the like forming the bottom 10 of the groove is formed in the threaded portion 7. are formed on each side of the.

According to one preferred embodiment, the grooves 4 are arranged substantially symmetrically with respect to the threaded part and the straight part shown in FIG. 6, i.e. said threaded part 7.
The surface 50 of said first part 1 of the nut opposite the side 12 extends substantially perpendicular to it.

According to one embodiment, as mentioned above, the groove 4 has a dovetail-shaped cross section in a plane perpendicular to the axial direction of the nut and tapers towards the surface 5 of the nut body. It is also of course possible to imagine other shapes in which the second part 2 would be fixed against outward radial movement. The groove 4 is, for example, substantially 7 in diameter, with its widest part 9 opening into the threaded part 7.
It can be formed in the cross section of a letter shape. The groove 4, which has a figure-7 cross-section, has its widest part 13 tapered radially inwardly so that the groove bottom 10
The restricting surface 14 of the bean paste facing the can be formed so as to act as one key forming a predetermined angle with respect to the bottom g (510) of the bean paste, as shown in FIG.

FIG. 6 shows one embodiment of the groove 4.

In this case, the dovetail portion 15 is substantially smaller than the corresponding portion shown in FIG. 6, for example.

The groove 4 can of course be arranged symmetrically terminating in a corner 16 of the nut, and the corner 16 can be formed in the second part 2. This groove 4, in the cross section,
Two opposing straight parts of the surface 5 of Natsuto's body,
That is, it extends substantially parallel to the two sides 17.

Several different embodiments are shown in FIGS. 7 and 9-15. In these embodiments, said second part 2 is fixed against movement in the axial direction of the nut. This movement is at least in the direction in which the second part is inserted into the first part.

According to an embodiment shown in No. 711, the nut portion 1,
2 has corresponding through holes 18 and 19. The through holes 18 and 19 preferably extend perpendicular to the axial direction of the nut and parallel to the bottom 10 of the groove. Through hole 18
．． Into 19 a so-called split footer 20 or the like is inserted, by means of which said second part 2 is locked in a predetermined axial position within groove 4.

According to the embodiment shown in FIGS. 9 and 10, each of the nut parts 1.2 has a groove 21, 22, respectively. Preferably, the grooves 21, 22 extend substantially perpendicular to the axial direction of the nut.

A fixing plate 23 or a corresponding member is inserted into the groove 21, 22 so that the second part 2 is connected to the groove 4.
It is adapted to be fixed at a predetermined axial position within.

According to the embodiment shown in FIGS. 11 and 12, at least one stop shoulder 25 is arranged in relation to one end 24 of the groove 4. In the embodiment shown in FIGS. A blocking shoulder 25 prevents said second part 2 from escaping from said end 24 .

FIG. 13 shows another embodiment. In this embodiment, said second part 2 is provided with a hole 26 or a corresponding opening, in which at least one ball 28 loaded with a spring 27 is located in the first part of the nut. It is fitted into the fourth part 29 of the groove 4 and the second
The portion is adapted to be fixed in a predetermined axial position.

In FIG. 14, reference numeral 30 indicates a lock yoke. This yoke 30 is rotatably attached to one end face 31 of the nut and can be moved in a direction that opens a free passage in the groove, and can be rotated forward to form a terminal stopper member. ing. Of course, lock yokes can be provided on both end faces.

In FIG. 15, reference numeral 32 designates a ring portion having a groove or slit located on the end face of the nut. This ring portion is pivoted forward of the miso opening and thereby serves as an end stop.

FIG. 16 shows yet another embodiment. In this embodiment, an internally threaded substantially semi-cylindrical body 33 is placed over the threads (not shown) of the nut part 1 before inserting the second part 2.

The essential functions of the nut according to the invention are as follows. Said first nut part 1 has a screw or a corresponding member inserted substantially radially into a groove 4 such that the thread of the screw is formed in said threaded part 7 of said first part 1.
The screws are applied so that they are placed inside. Preferably, the first part 1 is applied to the screw in the position where the nut is expected to occupy its final position. Thus, the nut part 1 can be attached to a screw, for example, even if both ends of the screw are fixed and thus occluded so that a conventional nut cannot be screwed in. after that,
Said second part 2 is inserted into the groove 4 in the axial direction of the nut, so that the screw is surrounded by the nut according to the invention. When the nut is tightened in a conventional manner against a fixed stop, a force is created in the screw and the threaded contact part of the nut which forces said first nut part 1 radially away from the screw. The second nut part 2 rests on a thread in a part 8 with a semicircular cross section, so that the nut parts 1, 2 are fixed opposite each other when tightened. For example, in the dovetail grooves 4 shown in FIGS. In the dovetail groove 4, the pressure acting on the thread due to the tightening moment can be varied by the dovetail shape of the groove part. (See FIGS. 6 and 6) In the T-shaped groove shown in FIG. 4, locking is provided by a shoulder in the groove where the first and second parts abut each other. In the T-shaped groove shown in FIG.
Shoulder part 1 formed at a predetermined angle that tends to reduce the width of the shoulder part 1
4. In some cases it may be preferable to lock the nut parts 1, 2 together before tightening the nut parts 1, 2. This applies, for example, to vertical screw mounting, which considerably facilitates the mounting operation when the sliding removal of the second part 2 from the first part 1 is prevented by some form of locking device. This may be advantageous if the nut parts 1,2 are held together to prevent the tightened nut parts 1,2 from loosening due to vibrations, etc. The manner of operation of the embodiment of the locking device shown in FIGS. 7 and 9-15 will be clear.

Above, several embodiments of the nut according to the present invention have been described. As is clear from this description, the invention means that a nut that can be applied radially to a screw is obtained in a simple manner. The threaded portion 7 is formed over only a portion of the circumference and the nut portion 1 is formed in the groove 4.
Due to the opening through the thread, a load corresponding to a certain tightening moment is distributed longitudinally over the thread. In a conventional nut, a few threads carry most of the load. Moreover, the threads can be cleaned since the internal threads are formed on only a portion of the circumference.

It should also be pointed out that the precision required when manufacturing the nut according to the invention is relatively moderate and therefore the manufacturing costs are cheaper.

For example, for the fit of the second part 2 into the first part 1, considerable clearances can be tolerated, and many more embodiments as well as minor modifications can be made without departing from the concept of the invention. , one can imagine variations.

FIG. 15 shows another embodiment of the locking device. In the locking embodiment, a conical pin 34 is adapted to be inserted into a substantially correspondingly shaped axially extending groove 36 formed between said nut parts 1 and 20.

The length of the nut can be varied as desired and the nut can of course be designed with rounded corners etc. in a known manner. Also, other forms of grooves 4 can be imagined that provide substantially the same performance as the illustrated grooves.

The nut can be designed to have a cross-section other than hexagonal, for example a square cross-section.

Regarding material selection, it may be preferable for most applications to manufacture the cut nuts from steel or other metal alloys. However, it is also conceivable to manufacture said second nut part 2 primarily from a material softer than, for example, steel to reduce manufacturing costs. The second part may be made of plastic or a similar material, for example.

The invention is therefore not limited to the embodiments described above, but may be varied within the scope of the claims.

[Brief explanation of the drawing]

1 is a schematic perspective view of a first part of an embodiment of a nut according to the invention, FIG. 2 is a schematic perspective view of a second part of the nut shown in FIG. 1, and FIG. 6 is a perspective view of the second part of the nut shown in FIG. Figure 4 is a diagram showing the parts according to Figures 1 and 2 assembled into a case nut, and Figure 4 shows the axis line where the miso is formed in a figure 7 shape instead of the dovetail shape shown in Figures 2 and 3. FIG. 5 shows a nut according to No. 4IA in which a part of said groove has the shape of a key, FIG. 6 shows a dovetail shape of the groove. 7 shows a nut according to FIG. 6, in which the part is made substantially smaller than in FIG. 3; FIG. 7 shows a through hole for locking said second part against axial movement; Lock pin 24I! Diagram showing nuts by u6nttc, No. 8
The figure shows an embodiment of a nut according to the invention, seen in the axial direction, in which the grooves extend neatly to the corners of the nut, instead of extending to the hollow part of the nut, i.e., to the sides, as in the previous figure. FIG. 9 shows that the second part, preferably the nut part, is locked against axial movement by a fixing plate adapted to be inserted into a groove extending perpendicularly to the axial direction. FIG. 10 shows the nut according to FIG. 1 when FIG. 9 is viewed from the left side, FIG. 12 shows the nut according to FIG. 11 as seen from the side of FIG. 11; FIG. FIG. 16 shows an embodiment of a nut according to the invention, partially in cross-section FIG. 14 shows an embodiment of the nut according to the present invention, in which one end surface of the first nut portion is provided with a rotatable lock yoke constituting a member of the end stopper. FIG. 16 shows an embodiment of the nut according to the invention, in which one end face of the nut part is provided with a part of a slit ring constituting a rotatable end stopper member, and FIG. 16 shows the second nut part. 1 shows an embodiment of a nut according to the invention with an internally threaded body adapted to be installed prior to insertion into a groove, thereby surrounding an internal thread; FIG. 1...First nut part, 2...Second nut part, 3
... Central hole, 4... Groove, 5... Surface of body, 6
...Inner thread, 7...Inner thread part, 8...Semicircular part, 9...Wideth part, 10...Bottom, 11
... Shoulder part, 12... Straight part, 13... Widest part, 14... Regulatory surface, 18.19... Through hole, 20... Split footer, 21.22...・Mizo, 23
...Fixing plate, 24...End part, 25...Shoulder part, 26
... hole, 27 ... spring, 2B ... ball, 29.
... recess, 30... four-way yoke, 31... end face,
35... body. Attorney Asa Mura Hiroshi Procedural Amendment (Method) March 1960 To the Commissioner of the Japan Patent Office 1, Indication of the case Patent Application No. 1963, ? J, ＞/υ No. 2, Name of the invention BU SOTO 3, Relationship with the person making the amendment Special 1f1 Applicant address 4, Agent 5, Date of amendment order February 1920, ? 2nd 6. Number of inventions increased by amendment

Claims (1)

[Claims] (1) A nut having an internal thread and axially divided into at least two parts, the two parts being fixed one to the other when the nut is tightened. a first part (1) forming a nut (1), for example a hexagonal nut, which can be fitted around a screw to enclose said screw;
1), said nut (1) comprising an axially extending and substantially radially oriented groove (4);
4) extends between the surface (5) of the body of the nut and said hole (3) with a screw (6), thereby providing a portion of the circumference;
An internal thread (preferably comprising only half the circumference)
only part (7) of 6) is formed, such that a screw or an equivalent member is inserted through said groove (4) until it abuts said part (7) of the inner thread (6); cage 1, further comprising a second portion (2) inserted axially into said groove (4) and thereby substantially occupying the groove portion not occupied by said screw; Part (2) is substantially connected to the outer diameter of the screw inserted into said first part (1) by a part (8) having a substantially semicircular cross-section in a plane perpendicular to said axial direction; and said groove (4) is designed to have, for example, a dovetail-shaped cross section and taper outwardly towards said body surface (5), so that said groove (4) A nut, characterized in that the two parts (2) are fixed against outward radial movement. (2. The nut according to claim 1,
The widest part (9) of said groove (4) is preferably located at its bottom' (10) and opens into said threaded part (7);
) is larger than the width and diameter of the threaded part (7), so that the bottom part (111)'
A nut characterized in that a substantially radially extending shoulder or the like is formed on each side of said threaded portion (7). (3) A nut according to claim 1 or 2, wherein the groove (4) is arranged substantially symmetrically with respect to the threaded portion (7,). and a straight part of the surface (5) of the body of said first part (1) of the nut opposite said threaded part (7), i.e. symmetrically open at the - side (12) and said - side Nut characterized in that it terminates preferably substantially perpendicularly to the section (12). (4) Either claim 1 or 2
The nut according to paragraph 1, wherein the groove (4) has a substantially figure-7 cross section in a plane perpendicular to the axial direction of the nut, and the widest part (9) of the groove (4) It opens into a threaded part (7) and the widest part (13) of said groove preferably has a key-shaped cross-section tapering radially inwardly, and the bottom part (10) of said groove ) A restricting surface (14) of the groove (4) facing the groove (4) is formed at a predetermined angle with respect to the bottom (10) of the groove. (5) The nut according to any one of claims 1 to 4, wherein the second part is inserted into the groove (4) and then the second part is inserted into the nut. A nut comprising a locking device or an equivalent device for fixing the nut so that it does not move in the axial direction of the nut, and wherein the movement includes at least movement in the direction in which the second portion (2) is inserted. (6) The nut according to claim 5,
The locking device is located at one end (24) of the groove (4).
Nut characterized in that it consists of at least one stop shoulder (25) arranged at the top. (7) A nut according to claim 5, in which each of the first part (1) and the second part (2) preferably has an entry hole extending substantially perpendicular to the axial direction of the nut. (21, 22), and a fixing plate (23) or a member equivalent thereto is inserted into the groove (21, 22), thereby fixing the second portion (2) in the axial direction. Characterized by Natsu. (8) The nut according to claim 5,
Said nut parts (1, 2) are preferably provided with corresponding through holes (18, 19) extending perpendicular to the axial direction of the nut and parallel to the bottom (10) of the groove;
(19) A nut characterized in that a lock pin (20L, for example, a so-called split lock (20)) is inserted into the nut, thereby fixing the second portion at a predetermined axial position. (9) Claims The nut according to paragraph 5,
At least one of the end faces (31) of said first nut part (1) is provided with a rotatable locking yoke (30) or a similar member, said locking yoke, in the rest position, providing an end stop in said groove (4). Natsuto, who is characterized by composing. [101] Nut according to claim 5, characterized in that said second nut part (2) is provided with a hole (26) or a similar hole, and at least one spring (27) is loaded.
Nut characterized in that a number of pawls (28) are arranged to fit into recesses (29) of the groove (4), thereby fixing said second nut part in a predetermined axial position. (111) The nut according to any one of claims 1 to 10, wherein the nut portion (2) is inserted into the groove (4) before the second nut portion (2) is inserted into the groove (4). 1 comprises an internally threaded, substantially semicircular body (35) applied over a screw inserted into the nut part (1), said body (35) extending the internal threads of the nut; Natsuto is characterized by being surrounded by people.