JP2002085121A - Piercer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a piercer which can omit a third spring conventionally required for a piercer to realize a simple constitution. SOLUTION: A latching member 20 to latch an injection shaft 17 is equipped movable in a direction crossing the sliding direction. A base part 26 to support and place the latching member 20 to a position to latch the injection shaft 17 onto a slide part 14. A cam 30 to release the latching by forcibly moving the latching part 20 after the base part 26 is released from the latching member 20 by sliding the slide part 14 is equipped on the slide part 14 and the latching part 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a slide portion slidably provided so as to sandwich an earlobe between itself and a main body, and is urged by a main spring in an ejection direction parallel to the slide direction. The present invention relates to a pierced piercing device having a configuration in which a shaft is hung and the hung is removed when piercing the earlobe.

[0002]

2. Description of the Related Art There are various types of piercing devices. The piercing device disclosed in the specification and the drawings of Japanese Patent Application Laid-Open No. 4-54904 is aimed at a target position of an earlobe. Has the advantage that work can be done faster and more accurately than previously performed. For this reason, Japanese Patent Laid-Open No. 11-16 proposed later
Nos. 4713 and 9-19313 also follow the structure in which the injection shaft of the piercing needle is held by the locking member in the invention of Japanese Patent Application Laid-Open No. 4-54904.

In the above-mentioned invention, it is necessary that the locking member is always urged by a spring in order to place the locking member in a state of locking the injection shaft. The springs indicated by reference numeral 44 in the present invention and reference numerals 34 and 36 in the latter two inventions correspond thereto. For this reason, the conventional type requires another third spring in addition to the injection and slide members, and cannot be omitted. Therefore, simplification is limited,
It has to be reflected in costs.

[0004] On the other hand, disposable piercing devices are widely used because of their excellent hygiene. However, due to the demand for price, a simple configuration in which a piercing needle is inserted into an earlobe by finger operation is adopted. I have. For this reason, it takes about one-tenth of a second to pass through the earlobe, and there is great variation due to differences in skill. In Japan, only doctors are allowed to pierce others, but in foreign countries, many people can do it, so many cases of failure have been reported.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and its object is to make it possible to omit the third spring, which is indispensable in the prior invention, and to simplify the structure. Is to realize It is another object of the present invention to enable a disposable piercing device to safely perform piercing with the same accuracy and speed as a non-disposable piercing device.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, a locking member for locking an injection shaft is provided so as to be movable in a direction intersecting the sliding direction, and the locking member is supported for injection. A slide unit is provided on the slide unit for holding the shaft at a position where the shaft is latched.After the slide unit slides the base unit off the latch member, the cam that forcibly moves the latch member to release the latch is called the slide unit. In this case, means is provided for the hook member.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION A piercing device according to the present invention has a sliding portion slidably provided so as to sandwich an earlobe between itself and a main body. The slide portion is provided on the main body of the piercing device, and is desirably spring-biased in a direction away from the main body. This is because, in order to remove the instrument from the earlobe after the perforation is completed, the workability is better if the slide portion is automatically separated by the spring force.

The main body is provided with an injection shaft movably in a direction parallel to the sliding direction, and the injection shaft is urged in the injection direction. It is desirable to use a sufficiently strong main spring for this bias as well as non-disposable. The injection shaft is retained by a retaining member in a state of being biased by a spring, and is released when the earlobe is pierced to be in an injection state, so that the piercing needle can be punched out.

In the present invention, in the present invention, a hook member for hooking the injection shaft is provided so as to be movable in a direction crossing the sliding direction of the slide shaft. This is because the injection shaft can be ejected by moving the latching member that is in a state of latching the injection shaft, but even though the latching member is movably provided, the Since a spring biasing force is applied from the injection shaft, it is not possible to reliably move the latch member and cause the injection shaft to be injected unless operated externally. On the other hand, the spring urging force from the injection shaft alone is not enough to place the latch member in the position for latching the injection shaft.

Therefore, in the present invention, a slide portion is provided on the slide portion for supporting the locking member and holding the injection shaft at a position where the injection shaft is locked.
The pedestal is therefore a means for keeping the latching member at the latching position with respect to the injection shaft. In other words, it replaces the third spring which is indispensable in the prior application and the like. Therefore, according to the present invention, the need for the third spring is eliminated, so that not only the reduction of the number of metal parts and the ease of assembling, but also the improvement of the operation reliability due to the elimination of the expandable member is expected.

According to the present invention, after the base is disengaged from the latching member by the sliding of the slide, the latching member is forcibly moved by the cam, and the latch is released to perform the injection operation of the injection shaft. Will be done. The cam is provided between the slide portion and the latch portion.

Incidentally, in assembling such a punch, there is a problem in incorporating a spring for controlling the injection of the injection shaft. This is because it is not easy to house a strong spring in the main body together with other members. However, in the present invention, this main spring is assembled from the rear with respect to the injection shaft after the main body is assembled, and the main spring is prevented from coming off by the spring retainer. At the same time as the spring press
It can also be configured to be a means for connecting the main body divided into parts.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. FIG. 1 shows an embodiment in which a piercing device 10 according to the present invention is constructed in a disposable manner. One piercing needle 11 and one catcher 12 are set in the piercing punch 10, and are discarded after one use.

The piercing device 10 has a main body 13 and a slide portion 14. The main body 13 has two left and right portions 15,
It is divided into 16. The injection shaft 17 is located on the rear side of the upper part of the main body.
Is formed in a form in which the rear end is opened,
The injection shaft 17 has a protruding portion 17a that stops when it hits a later-described hooking member 20. The front side of the front wall 18a of the storage chamber 18 is an arrangement portion of a separable cartridge holding the piercing needle 11. On the other hand, the slide portion 14 is accommodated in a slide chamber 19 formed on the front side of the lower portion inside the main body. The slide part 14 has a shaft part 21 that fits in the slide chamber 19 and an earpiece part 22 that rises from the outer tip and sandwiches the earlobe between the front part of the body and the earpiece part 22.
Are provided.

A hooking member 20 is provided between the injection shaft 17 and the slide portion 14. The member 20 is an injection shaft 17
Is provided at the upper portion so as to surround the lower portion of the shaft from below, and a portion associated with the slide shaft portion 21 is provided at the lower portion. In order to enable the hooking member 20 to move in a direction crossing the moving direction of the slide portion 14, the hooking member 2
A guide portion 23 for receiving both left and right sides of the main body 0 is formed on the inner surface of the main body.

In order to hold the injection shaft 17, the locking member 20 is supported by a base 26 provided near the inner end of the slide shaft 21. In this state, the slide portion 14 is in the most advanced state, and the rear end is pushed forward by the pressing spring 27 supported by the spring receiver on the main body side, and the projection 28 of the slide portion 14 hits the stop portion 29 in the main body. It is positioned by. See FIG.

The hooking member 20 has a frame shape in which a cam projection 25 constituting the cam 30 is provided below the hooking portion 24. See FIG. In the illustrated example, a window opening 31 is provided in the lower portion of the hooking member 20 and a cam projection 25 is provided on the upper surface of the lower frame, and the opening 31 has a top 3 of a cam slope 32 which is a mating cam.
3 until the projection 3 reaches the cam projection 25.
Eight is possible.

The piercing device 1 thus constructed
Reference numeral 0 denotes a coupling means in which the injection shaft 17, the slide portion 14, its pressing spring 27, and the latching member 20 are respectively incorporated in a predetermined positional relationship, and the two parts 15, 16 which are divided into right and left are formed by uneven fitting. 34 together. Furthermore, in order to prevent the main body 13 from being separated, the left and right two portions 1
The connector 35 is attached to 5 and 16. The connector 35 is formed in a substantially U-shape so as to press the left and right portions 15 and 16 from the left and right outer sides, and a fitting of a slide groove 37 provided on the main body side is performed by a claw 36 provided at a distal end portion. Part 3
8 and is fixed.

Further, in the present invention, the main spring 40 for injecting the injection shaft 17 is mounted by using the connector 35. A spring receiver 39 supports the rear end of the main spring 40. The main spring 40 is inserted into the accommodation chamber from the opening at the rear end, and the front end is supported by the projection 17 a of the injection shaft 17.
With such a configuration, the present invention provides a strong main spring 4
0 can be mounted at the end of assembling, so that assembling is facilitated and erroneous mounting of components is prevented.

In the above description, the piercing device 10 for ejecting the piercing needle 11 using the catcher 12 has been described. However, the present invention also relates to the piercing device 10 'for ejecting the piercing needle 41 that does not require catching. Can be applied, and an example thereof will be described with reference to FIG.

The second embodiment differs from the first embodiment only in that a small hole 43 for receiving a slightly bulged tip 42 of a piercing needle 41 is provided above the ear receiving portion 22. In the first embodiment, a portion having a configuration in which the catcher 12 can be set out so as to be able to escape forward is a convex surface 44 in contact with the earlobe, and a small hole 43 is formed in the center thereof.
Other configurations may be exactly the same as those in the first embodiment, so reference numerals will be used, and detailed description will be omitted.

The operation of the piercing device 10 shown in the first embodiment will be described. First, the piercing device is set so that the earlobe Y comes between the main body 13 on which the piercing needle 11 is set and the ear pad 22 on which the catcher 12 is set. The perforator 10 is guided (FIG. 6A). In this state, the slide portion 14 is
6 (b) against the pressing spring 27, and the tip of the piercing needle 11 is applied to the target position of piercing. This operation is performed by, for example, pressing both ends of the appliance with the thumb and the index finger. 6 (a) and 6 (b), the locking member 20 is detached from the base 26 of the slide portion 14, but the locking member 20 is moved from the injection shaft 17 to the main spring 4.
Since there is no pressing force, there is no danger of moving downward, and it is possible to start over.

When the slide portion 14 and the main body 13 are further approached, the slope 32 of the cam 30 contacts the cam projection 25,
Since the action of forcibly pushing down the locking member 20 is applied (FIG. 6C), the locking member 20 moves downward, the locking portion 24 is disengaged from the projection 17a of the injection shaft 17, and the injection shaft 17 is It is rapidly ejected by the elastic pressure of the main spring 40, and the earlobe Y is punched out instantaneously (FIG. 7A). Injection speed is 1/10
The time is about 0 seconds, which is significantly faster than the conventional disposable type, so that pain is reduced. At this point, the piercing is completed, and the catcher 12 is fitted to the tip of the piercing needle 11. Until then, the catcher 12 attached to the slide portion 14 side is fitted with the piercing needle 11,
It comes off the slide part 14. At the same time, the cartridge is separated by the movement of the piercing needle 11 (FIG. 7 (b)), and the catcher 12 comes out of the earpiece 22 by the return of the slide portion (FIG. 7 (c)). Thus, all the operations related to the piercing are completed, but even if an attempt is made to set another piercing needle again, the latch member cannot be set again, so that it cannot be reused and safety is not impaired.

[0024]

Since the present invention is constructed and operates as described above, the third spring, which is indispensable in the prior invention, is not required, so that the structure and assembly are simplified and the structure is simplified. This makes it possible to reduce costs. In the conventional example having the third spring, there is a high possibility that the injection shaft can be remounted and used again. However, in the present invention, since the third spring is not provided, the injection shaft cannot be remounted and the safety is high. Also, due to the powerful injection action of the main spring, the piercing can be safely performed with the same accuracy and speed as those of a disposable type or a non-disposable type. Further, by attaching the main spring at the end, the assembly of the piercing device is facilitated, and the selection of the spring force is easy, so that an appropriate firing force is easily obtained.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing Embodiment 1 of a piercing device according to the present invention.

FIG. 2 is a perspective view showing an assembled state.

FIG. 3 is a longitudinal sectional view of the same.

FIG. 4 is a three-side view of the hook member.

FIG. 5A is a longitudinal sectional view illustrating a standby state according to a second embodiment of the present invention. (B) The longitudinal section showing the same after injection.

FIG. 6 (a) is an explanatory view of a state where the device of the first embodiment is guided to an earlobe. (B) Explanatory drawing of the state in which the hook member was detached from the base. (C) Explanatory drawing of the state where the latch of the injection shaft was disengaged by the cam.

FIG. 7A is an explanatory view of a state in which a piercing needle pierces an earlobe by an ejection shaft. (B) Explanatory drawing of the state where the cartridge was separated. (C) Explanatory drawing of the completion state of piercing.

Claims (2)

[Claims] 1. An injection shaft which has a slide portion slidably provided so as to sandwich an earlobe between the body and an injection shaft which is urged by a main spring in an injection direction parallel to the slide direction. An appliance having a configuration for removing the latch when piercing the earlobe, wherein a latch member for latching the injection shaft is provided so as to be movable in a direction intersecting the sliding direction, and the latch member is supported. The slide unit is provided with a base that holds the injection shaft at the position where the injection shaft is latched. After the base is disengaged from the latch member by sliding the slide unit, the cam that forcibly moves the latch member to release the latch is slid. A piercing device, wherein the piercing device is provided on a portion and a hook member. 2. A main spring for injecting the injection shaft is assembled from the rear side of the injection shaft after assembling the main body, and the main spring is prevented from coming off by a spring retainer. The piercing device according to claim 1, wherein the piercing device is configured to be a coupling means.