KR101908898B1 - Jig for insertion spring in the socket - Google Patents

Abstract

The present invention relates to a jig for inserting a spring into a socket. More specifically, the present invention relates to the jig for inserting a spring into a socket when manufacturing the socket used in an explosive apparatus. The socket with a small size of less than 1 mm is configured for gripping to help a user to be seated with a spring smaller than the socket and bent to a step inside the socket.

Description

{JIG FOR INSERTION SPRING IN THE SOCKET}

The present invention relates to a jig for inserting a spring into a socket.

More specifically, the present invention relates to a jig for inserting a spring into the socket when manufacturing a socket for use in a detonator, wherein a spring having a size smaller than 1 mm and smaller than the socket is provided inside the socket To a jig for inserting a spring into a socket, the jig being configured for gripping to assist the user's work so that it can be correctly bent.

A primer is an igniting metal tube used to ignite a gunpowder or a gunpowder. The primer tube is provided with a socket through which a spring for ignition is inserted.

In the case of a socket manufactured for this purpose, the spring is inserted and fixed as shown in Fig. 2, since the socket and the spring are formed in a very small size, there is a limitation in manual insertion by a person, There is a disadvantage that the probability of occurrence of defective products is high.

Accordingly, the applicant intends to propose a fixture that facilitates the insertion and seating of the spring. In this case, as the socket and the spring become very small in size as described above, when the spring is inserted into the socket and the fixture is removed There is a problem that the spring moves along the jig and tries to be separated from the socket after a stable seating.

On the other hand, as a tool having a shape similar to that of a fixture to be provided by the present applicant, a tool for disassembling and assembling an injector is disclosed in Korean Utility Model Publication No. 20-2010-0002981.

According to an aspect of the present invention, there is provided an injector disassembling / assembling tool including a spring plate, a stop key for fixing the spring plate, an upper chamber, a plunger, a washer, An injector disassembling / assembling tool used for disassembling / assembling an injector, wherein the injector disassembling / assembling tool comprises an attachment protrusion to which a detent key can be attached by a magnet fixed to the tip end.

However, the above-described technique can not achieve the object of the user's operation for the stable fixing of the spring proposed by the applicant, the easy releasing of the spring, and the operation of the spring, and is not related to the function to be performed.

In view of the functional aspect of controlling the small structure, a tool for removing the spring cap of the Registration Practical Utility Model Publication No. 1997-027954 is described, There is a difference from the proposed technology, and the overall configuration is also different.

Public Utility Model Publication No. 20-2010-0002981 (Mar. 15, 2010) Registration Utility Practice Bulletin No. 0116835 (Published on July 24, 1997)

An object of the present invention is to provide a jig for inserting a spring into the socket when manufacturing a socket for use in an explosive device, in which a spring smaller in size than a socket in a socket having a small size of 1 mm or less, And a jig for inserting the spring into the socket, the jig being configured for gripping to assist the user's work so that the jig can be seated accurately in the step.

According to an aspect of the present invention, there is provided a jig for inserting a spring into a socket,

A jig for inserting a spring into a socket having a size of 1 mm or less, the jig including a performance unit (10), wherein a connection unit (11) is formed at one side of the performance unit (10)

And the insertion portion 12 is further protruded from the other end of the tilting performance portion 10 so that the performance portion 10 and the insertion portion 12 of the insertion portion 12 can be separated from each other. And the groove portion 12a is formed concavely on the side surface of the opposite end connected thereto.

At this time, the fixture further includes a handle 20, and the handle 20 is formed with an insertion groove 21 corresponding to the connection portion 11.

Further, the handle 20 is detachably attached to the performance unit 10, so that the performance unit 10 can be replaced.

The ratio of the diameter (a) of the insertion portion (12) to the depth (c) of the groove portion (12a) is 10: 1.

The diameter b of the groove 12a is 3/4 of the diameter a of the inserting portion 12.

According to the jig for inserting the spring according to the present invention into the socket, it is possible to easily insert the spring into the socket with the small-sized socket and the spring,

At the same time, it is possible to provide a jig for inserting a simple structure spring into the socket, which can easily release the spring and fixture when the jig is to be removed after the spring is inserted.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing the construction of a fixture for inserting a spring according to the present invention into a socket; FIG.
2 is a view showing a configuration of an actual product of a socket in which a spring is inserted using a jig for inserting a spring according to the present invention into a socket.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and the inventor can properly define the concept of the term to describe its invention in the best possible way And should be construed in accordance with the principles and meanings and concepts consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and drawings are only the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents And variations are possible.

Before describing the present invention with reference to the accompanying drawings, it should be noted that the present invention is not described or specifically described with respect to a known configuration that can be easily added by a person skilled in the art, Let the sound be revealed.

The present invention relates to a jig for inserting a spring into a socket.

More specifically, the present invention relates to a jig for inserting a spring into the socket when manufacturing a socket for use in a detonator, wherein a spring having a size smaller than 1 mm and smaller than the socket is provided inside the socket To a jig for inserting a spring into a socket, the jig being configured for gripping to assist the user's work so that it can be correctly bent.

The present invention will be described with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing the construction of a fixture for inserting a spring according to the present invention into a socket; FIG.

1 of the accompanying drawings, a jig for inserting a spring according to the present invention into a socket is composed of an execution part 10 and a handle 20. [

At this time, the performing unit 10 is configured to perform an operation to insert the spring into the socket, and the handle 20 is coupled to the end of the performing unit 10 so that the user can grasp the spring.

The reason why the performance unit 10 and the grip 20 are separated from each other is that when the performance unit 10 is worn or damaged, the performance unit 10 is detached from the grip 20 and the performance unit 10 ) In order to be able to use it.

A connecting portion 11 is formed at one side of the performing portion 10 and an insertion groove 21 corresponding to the connecting portion 11 is formed at one side of the handle 20 to be concave.

The connecting portion 11 may be inserted into the insertion groove 21 to connect the performing portion 10 and the knob 20. At this time, a thread is formed on the outer diameter of the connecting portion 11, A thread is also formed on the inner surface, and the performing part 10 and the knob 20 can be engaged with each other by threading.

The other part of the performing part 10 is inclined so that the diameter gradually decreases. The insertion part 12 is further formed to protrude from the other end of the inclined performing part 10.

The insertion portion 12 may be formed with a groove 12a formed in a concave shape on the opposite end surface connected to the performance portion 10. [

The spring can be inserted into the socket shown in Fig. 2 by using the jig having the above-described configuration.

2 is a view showing a configuration of an actual product of a socket in which a spring is inserted using a jig for inserting a spring according to the present invention into a socket.

That is, after the spring is inserted into the socket as shown in the left side of Fig. 2, the jig is operated while fixing the end of the spring protruding from the socket to the bottom surface and inner wall of the groove 12a formed in the insertion portion 12, 2, the spring is bent at the step inside the socket so that it can be seated.

At this time, since the end portion of the spring is fixed to the bottom surface and the inner wall of the groove portion 12a of the insertion portion 12, the jig of the user's wrist is used to turn the jig so that the end portion of the spring is released from the groove portion 12a.

Otherwise, in the process of removing the jig from the socket, the spring may be released to the outside of the socket.

However, since the size of the socket and the spring is very small, the size of the jig is large enough to be grasped by the user. Therefore, if the size of the groove 12a of the jig is too small, If the size is too large, during the above-described operation, the end of the spring does not separate from the groove portion 12a, and when the jig is removed from the socket, a problem occurs that the spring is disengaged from the socket along the jig.

The applicant has conducted the following experiment to evaluate the optimum size of the groove 12a to solve this problem.

Referring to Fig. 1, the diameter of the insertion portion 12 is referred to as a, the diameter of the groove 12a is referred to as b, and the depth of the groove 12a is referred to as c.

Experimental Example 1. Depth Evaluation of Groove

(Experimental Method)

Experimental Example 1 shows the relationship between the depth of the groove 12a and the diameter of the insertion portion 12 in a state where the diameter of the groove 12a is smaller than the diameter of the insertion portion 12 in the jig having the above- , And the same user was evaluated by inserting the spring into the socket 5 times each time.

Experimental group 1: ratio of a: c 10: 0.5

Experimental group 2: ratio of a: c 10: 0.6

Experimental group 3: ratio of a: c 10: 0.7

Experimental group 4: ratio of a: c 10: 0.8

Experimental group 5: ratio of a: c 10: 0.9

Experimental group 6: ratio of a: c 10: 1

Experiment group 7: ratio of a: c 10: 1.1

Experimental group 8: ratio of a: c 10: 1.2

Experimental group 9: ratio of a: c 10: 1.3

Experimental group 10: ratio of a: c 10: 1.4

(Experiment result)

For the experimental results, see Table 1 below.

Experimental group One 2 3 4 5 6 7 8 9 10 1 time x x x o o o o o x o Episode 2 x x x o x o o o o x 3rd time x x x o o o x x x x 4 times x x x x o o x x x x 5 times x x x x o o o x x x

Here, o is the result of successful insertion of the spring into the socket, and x is the result of failure to insert the spring into the socket.

As shown in [Table 1], the experimental group that successfully inserted the spring 5 times was the experimental group 6.

In the experimental groups 1 to 5, the number of failures increased as the depth of the groove 12a became smaller, and in the experimental groups 1 to 3, all of the spring insertions failed. This is because the depth of the groove 12a is so small that the spring is not fixed to the bottom and inner walls of the groove 12a according to the shallowness.

Therefore, it is often difficult to insert the spring into the socket itself.

Conversely, although the spring could be fixed from the experimental group 7, as the depth of the groove portion 12a became too deep, a phenomenon occurred that the spring was released to the outside of the socket together with the jig when the jig was removed from the socket.

Experimental Example 2. Evaluation of Diameter of Groove

(Experimental Method)

The depth of the groove 12a determined in Experimental Example 1 was applied to evaluate the influence of the diameter of the groove 12a on spring insertion. The diameter of the groove 12a was set to the following experimental group. In addition, the experiment was carried out in the same manner as in Experimental Example 1.

Experimental group 6-1: b is 1/4 of a

Experimental group 6-2: b is 2/4 of a

Experimental group 6-3: b is 3/4 of a

At this time, diameters of b and a can not be the same. This is because the groove 12a must be formed within the diameter range of the insertion portion 12.

(Experiment result)

The experimental results are shown in [Table 2].

Experimental group 6-1 6-2 6-3 1 time x x o Episode 2 x o o 3rd time x o o 4 times o o o 5 times x x o

Here, o is the result of successful insertion of the spring into the socket, and x is the result of failure to insert the spring into the socket.

[Table 2] Referring to Table 2, it is preferable that the experimental group that succeeded for the entire five times is the experimental group 6-3, and accordingly, the diameter of the groove 12a is 3/4 of the diameter of the insertion portion 12.

On the other hand, depending on the design conditions, a flexible packing material may be thinly coated on the outer surface of the connection portion 11. Therefore, the shape of the screw thread can be seen on the outer surface of the packing, so that it can be engaged with the thread of the insertion groove 21 and the connection between the connection portion 11 and the insertion groove 21 becomes flexible, The spring 11 is inserted into the insertion groove 21 so that a part of the spring is inserted into the socket and then the jig is released. 12).

According to another design condition, the second connecting body further includes a second connecting body inside the connecting portion 11, the second connecting body having a smaller diameter than the connecting portion 11, so that the inner surface of the connecting portion 11, A hollow is formed between the outer surfaces of the connecting body,

A plurality of elastic members (springs) connected from the inner surface of the connection portion 11 to the outer surface of the second connection body are connected to the hollow,

The end of the connecting part 11 is not connected to the performing part 10 but the end of the second connecting part is connected to the performing part 10 so that the spring is inserted into the socket and then the jig is removed It is possible to allow flexible movement of the connection portion 11 so that when the user gripping the handle 20 performs a large snap operation, the performance portion 10 located inside the socket can be moved to the wall surface of the socket It is possible to move in a fluid manner without being restricted by the position of the handle 20. [

It is apparent that the present invention is not limited to the configuration of the drawings, as described above with reference to the drawings, only the main points of the present invention are described, and various designs can be made within the technical scope thereof.

10:
11: Connection
12:
12a:
20: Handle
21: Insert groove

Claims (5)

A jig for inserting a spring into a socket having a size of 1 mm or less,
The jig includes a performance unit (10)
The execution unit (10)
A connecting portion 11 is formed on one side,
And the other end is inclined so that the diameter gradually decreases. The inserting portion 12 is further protruded from the other end of the inclined performing portion 10,
A groove 12a is concavely formed on a side surface of the opposite end of the insertion part 12 connected to the performance part 10,
The ratio of the diameter a of the insertion portion 12 to the depth c of the groove portion 12a is 10:
Characterized in that the diameter (b) of the groove (12a) is 3/4 of the diameter (a) of the insert (12).
The method according to claim 1,
The jig may further include a handle (20)
The handle (20)
Wherein the insertion groove (21) is formed corresponding to the connection portion (11).
The method of claim 2,
Wherein the handle (20) is detachably attached to the performance unit (10) so that the performance unit (10) can be replaced.
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