JPH0673426U - Method of fixing ring type female screw - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a simple and reliable fixing method and play-back method for a ring-shaped female screw. [Structure] A slot is provided on the side of the ring-shaped female screw, and a tap hole is provided in the center of the ring so as to straddle the slot, and a push screw is inserted into the tap hole (either tap hole or push screw is tapered By doing so, you can fix the ring-shaped female screw and play it.

Description

[Detailed description of the device]

[0001]

[Industrial application] It has great utility value as a fixing device for fine adjustment parts such as a lens barrel and a precision translation table.

[0002]

2. Description of the Related Art A method is generally used in which a male screw is directly tightened from the side surface of the female screw by using a push screw or the like, but the male screw is notched and gets caught by the female screw. There was a flaw.

[0003]

2. Description of the Related Art A method in which a slit parallel to the end face of a ring-shaped female screw is provided near the end face and the slit is pushed out from the end face and spread and fixed is also used in the case of heavy processing, but the ring-shaped female is also used. Since the screw must be thick, it has the disadvantage that it can only be used in the case of semi-fixation because of the end face processing.

[0004]

2. Description of the Related Art It is possible to stack two ring-shaped female screws and use them like a lock nut, but there is a problem that the screws are long and difficult to operate, and when there is a lot of movement or a precise operation is required. Is not suitable for.

[0005]

2. Description of the Related Art There is also a method in which a ring-shaped female screw is vertically cut and tightened from the lateral direction, but there is a problem that it is difficult to operate.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for fixing a ring-shaped female screw which eliminates the drawbacks of the conventional methods and is easy to operate and reliable.

[0007]

[Means for Solving the Problems] The slot (4) along the end face (8) from the side surface (outer side) of the ring-shaped screw has one (FIG. 3) in the case of a narrow ring-shaped female screw, In the case of a wide ring type female screw, insert two parallel screws close to each other (4) Tap the hole (5) on the die that straddles the slit (4) at the center of one of the slits (4). By installing a push screw or taper screw (7), the pitch of the slotted (4) processed part of the ring female screw (1) is changed to fix the ring female screw (1) or play it. Try to lose it.

[0008]

The ring-shaped female screw (7) is screwed into the screw hole (5) straddling the slit (4) provided in parallel with the end surface (8) of the ring-shaped female screw (1). It is also possible to fix the ring-shaped female screw (1) by making a slight change in the pitch of 1) or to correct the rattling. The push screw (7) inserted in the slot (4) is designed so as not to reach the male screw (9) with respect to the female ring screw (1). (1) does not bite.

[0009]

1 and 2 are views showing an example of a lens barrel of a camera embodying the present invention, in which a lens barrel (2) which expands and contracts by a ring-shaped female screw (1) is mounted on a mount ( It can be attached to the camera by 3). The ring-shaped female screw (1) is provided with two parallel slits (4), and a tap hole (5) for a push screw is provided at the center of one of them, which is provided at the tip of the operating knob (6). When the push screw portion (7) is screwed in and the operating knob (6) is strongly tightened, the slit (4) is pushed open and the ring-shaped female screw (1) is fixed. Further, if the operating knob (6) is loosened, the fixation of the ring-shaped female screw (1) is released, and the operating knob (6) can be operated easily.

[0010]

EXAMPLE FIG. 5 is a development view of a ring-shaped female screw (1) showing an example of play removal of a precision adjusting screw according to the present invention, and FIG. 6 is an explanatory view of operation. The screw originally does not work without play, but in the case of the precision adjustment screw, this play must be minimized. A slit (4) having a center point equally divided is provided on the outer circumference of the ring-shaped female screw (1) at an angle, and each slit (4) is divided into half and the adjacent slits (4). Provide one tap hole (5) at each slit (4) in the center of the parallel part so that it is parallel to the above, and adjust the play by screwing the push screw (7). Fix 7), but use one of them with the operation knob (6).

[0011]

[Effects of the Invention] Easy to process and does not require additional parts. It has features such as easy operation and reliable operation.

[Brief description of drawings]

FIG. 1 is a side view of a lens barrel according to an embodiment of the present invention.

FIG. 2 is a sectional view of a lens barrel according to an embodiment of the present invention.

FIG. 3 is a view showing an example in which the present invention is applied to a narrow ring-shaped female screw.

FIG. 4 is a view showing an example in which the present invention is applied to a wide ring-shaped female screw.

FIG. 5 is a view showing an example of play removal according to the present invention.

FIG. 6 is an explanatory view of the operation of the present invention.

[Explanation of symbols]

 (1) Ring-shaped female screw (2) Lens barrel (3) Mount part (4) Slot (5) Tap hole (6) Operation knob (7) Push screw part (8) Ring-shaped female screw end surface (9) Male screw to ring female screw (10) Displacement

Claims (3)

[Scope of utility model registration request] 1. A slit is provided on a side surface of a ring-shaped female screw along an end face, and a tap hole is formed in the vicinity of the center of the slit so as to straddle the slit. The method of fixing the ring-shaped female screw is so that the ring-shaped female screw is fixed. 2. A ring-shaped female screw is provided with two slits parallel to the end face and parallel to each other at a slight interval, and a tap hole is formed in the vicinity of the center of one of the slits so as to straddle the slit. By inserting, the part sandwiched between the two slits is pushed toward the other slit and the ring female screw is fixed. 3. A method for fixing a ring-shaped female screw, wherein either one or both of a tap hole and a push screw, which are formed in a slot for fixing the ring-shaped female screw, are tapered screws.