JPH0634762B2 - Piercing punch - Google Patents

Description

TECHNICAL FIELD The present invention relates to a device for piercing an ear lobe for so-called piercing.

(Prior Art) A device for piercing an ear lobe for using a pierce type earring is known, and for example, Japanese Examined Patent Publication No. 59-30401 can be mentioned. The present invention is an instrument having a plunger structure using a cartridge sealed so as to maintain a sterile condition until use, and a tip end portion of a plunger assembly composed of a support member and an operating portion which are slidably coupled to each other. The cartridge is set in and the piercing needle is pierced into the earlobe by pressing the operating part.

(Technical Problem) In the device of the invention described above, the force of the finger for operating the device is the force of piercing the earlobe with the piercing needle. Therefore, the piercing time becomes longer or shorter depending on the operation of the operator, and the degree of skill influences the time. Therefore, the present inventor has developed and filed a perforator having a structure in which the piercing needle is ejected by the elastic force of the spring by operating the operating lever while holding the instrument with one hand and holding the earlobe. The present invention has been made to further develop the perforator, and makes it possible to pierce the earlobe with a piercing needle more accurately and safely.

Therefore, an object of the present invention is to hold all the operations from holding the earlobe to the cartridge and momentarily piercing the piercing needle by the elastic force of the accumulated spring with one hand operation. By being able to operate while checking the piercing timing while checking the condition,
The goal is to allow safe drilling without requiring skill.

(Technical Means) In order to solve the above-mentioned problems, according to the present invention, a hollow main body 2 having a grip 1 at the bottom for gripping with a hand, and a front part of the grip movably provided rearward and biased by a spring in a return direction. Has been done,
Trigger 4 provided with a supporting rod 3 for setting the front member of the piercing cartridge consisting of two members in the front and rear.
And an externally operable injection shaft 5 which is provided in the main body so as to be movable back and forth and presses a rear member of the cartridge forward at a forward end portion thereof, and a spring 6 which accumulates pressure by a backward operation of the injection shaft 5. Also, the locking member 7 biased in the same direction so as to lock the injection shaft 5 at the pressure accumulation position, and a part 47 of the locking member 7.
And a releasing means 8 having an engaging portion 48 which engages with the trigger 4 and converts the rearward movement of the trigger 4 into the movement in the direction of releasing the locking of the locking member 7 locked to the injection shaft 5. It is arranged at the rear part of the trigger 4 and is positionally adjustable between a safety position where it contacts the rear end of the trigger 4 and stops its retreat, and an injection position away from the same position and allowing the trigger 4 to retract. The safety device (10) constitutes a piercing punch.

The trigger 4 is an operation member for actually ejecting the piercing needle, and at the same time, it is effective for allowing the front member of the piercing cartridge to approach the rear member and confirming the piercing position with respect to the earlobe. Near the position, the release means 8 act on the locking member 7 to unlock the injection shaft 5.

In the illustrated example, the releasing means 8 is integrally provided so as to project from the upper portion of the trigger 4, but the releasing means 8 may or may not be structurally integral. Also, the firing of the piercing needle is trigger 4
In view of the fact that the operation is performed by one-touch operation, the safety device 10 is provided in association with the trigger 4 until the piercing needle is actually ejected in order to avoid an unexpected operation.

The safety device 10 achieves its purpose regardless of its structure as long as it directly or indirectly restrains the movement of the trigger 4 or disconnects the connection between the trigger operation and the injection shaft 5.

(Example) Hereinafter, description will be given with reference to the drawings.

The main body 2 is a hollow structure in which two flat case-shaped left and right portions 11 and 12 are combined, and a lower portion thereof is a grip 2. The two front faces of the grip are open and project forward from there,
A trigger 4 having a finger hook is incorporated so as to be movable back and forth. Numerals 13 and 14 are slide grooves formed in the front and rear direction in the front and rear direction and having a substantially U-shaped cross section, which are integrally formed on the upper part of the pulling tool 2 so as to project forward. Engage with both sides of the supporting rod 3. Reference numeral 15 is a rod-shaped spring bearing provided in the trigger, and 16 is a rod-shaped spring bearing provided in the body on the extension thereof, and supports both ends of a return spring 17 which acts in the direction of returning the trigger 4.

The support rod 3 slides in the front-rear direction together with the trigger 4. The upper surface of the tip portion is a cartridge mounting portion, and the front member C ′ of the cartridge C engages with the engaging portion 18 formed on the supporting rod 3. This cartridge C is an aseptic type which is sealed with the pierce needle 21 assembled in the rear member C ″ and the stopper 22 assembled in the front member C ′. The front member C ′ is disposed as the engaging portion 18 described above. Has an extension piece e and the like on the lower surface of which an engagement partner 19 that engages with is projected, and the extension piece e engages with an engagement groove f provided in the lower portion of the rear member C ″, and approaches each other. It is preferable to have a structure that can be separated. The piercing needle 21 is incorporated in the accommodation hole 23 located on the injection axis of the rear member C ″, and the stopper 22 is incorporated in the groove 24 of the front member C ′ coaxially and upwardly withdrawable. Good: 25 is a member that stops the piercing needle 21, and breaks when the injection shaft 5 advances.
Is a retaining protrusion of the trigger 4, which engages with the front plate of the main body.

The injection shaft 5 is a rod-shaped member that is assembled in the upper part of the main body so as to be movable back and forth. A large diameter portion 31 is provided in the center, and small diameter portions 32 and 33 are provided in front of and behind it. Stop 3
4, the rear surface is a spring receiver 35 of the pressure accumulating spring 6. 36 is a shaft accommodating portion formed in the main body of the corresponding portion, and the front end thereof is an injection port 38 through which the tip portion 37 of the injection shaft 5 is projected,
The rear part is a spring receiver 39 of the pressure accumulating spring 6. An operation knob 9 is provided on the upper side surface of the injection shaft 5, and an elongated hole 40 is formed on the upper surface of the main body to allow the operation knob 9 to pass therethrough.

The locking member 7 having the protrusion 41 that engages with the locking step portion 34 for stopping the injection shaft 5 in the pressure-accumulated state is projected and retracted into the housing portion through the hole 42 formed in the partition wall of the shaft housing portion 36. Body 2
Is supported by. The locking member 7 is located above the trigger 4 and below the injection shaft 5, and is provided by a spring 44 interposed between a spring receiver 43 provided on a sliding groove that also functions as a trigger guide and a lower surface of the locking member. A locking member that is biased in the engaging direction and has a hole 46 in the front portion that is pivotally supported by a support shaft 45 so that the pin for interlocking with the trigger 4 engages with the opening means 48. 7
It is provided as part of 47. Part of locking member 7
The pin 47 is pulled down by a cam-shaped engaging portion 48 inclined from the front lower portion to the rear lower portion, which is provided on the upper surface of the rear portion of the trigger 4 as a means 8 for releasing the locking of the injection shaft 5. The engagement between the locking member 7 and the locking member 7 is released. The main body 2 on both sides of the tip of the injection shaft 5 is provided with a locking groove 28 for engaging and setting the locking piece 27 of the rear member C ″ of the cartridge C as a cartridge mounting portion.

The perforator 50 as described above is made of resin, and
It can also be formed for single use.

Since the trigger 4 is locked by the locking member 7 against the force of the spring 17 which has been accumulated, if the injection shaft 5 is also accumulated, there is a risk that it will operate abruptly. A safety device 10 is provided to prevent the trigger 4 from being inadvertently moved until all preparations are completed. The illustrated device 10 is arranged at the rear of the trigger 4 to prevent the trigger 4 from retreating, and has a safety position for contacting the rear end of the trigger 4 to stop the retreat and an injection position for allowing the trigger 4 to retract. Is rotatably supported between the main body support shaft 51 and the trigger 4
The end is reached by the tip 52 colliding with the rear end 57. Reference numeral 53 denotes a rear horizontal axis, which is operated by an operation piece 55 provided outside through the main body small hole 54 by the horizontal axis 53. 56 is the hypotenuse of the tip, and when the front part of the device is lifted at the injection position,
The releasing means 8 is provided to prevent contact with the inclined releasing surface 48 (FIGS. 7 and 8). Reference numeral 57 is the rear end of the support rod 3, and depending on the positional relationship with the front end 52 of the safety device, when the safety device 10 is applied, the trigger 4 cannot be pulled at all or can be pulled just before injection. The operation mode of the trigger can be set.

(Operation) The earlobe perforator 50 configured as described above operates as follows in use. Prior to operation, the instrument is in the position shown in FIG. 3 with the trigger 4 in the advanced position by the spring 17 and the injection shaft 5 in the advanced position by the injection spring 6.
The sealed cartridge C is taken out and both front and rear members C ',
C ″ is separated back and forth, and the front member C ′ is attached to the engaging portion 18 of the support rod 3.
And the rear member C ″ is set in the locking groove 28 of the main body by engaging with the rear member C ″ (FIG. 4). Further, when the operation knob 9 is slid rearward, the locking step portion 34 of the injection shaft 5 is locked. Protrusion 41 of member 7
Are engaged, and the injection spring 6 accumulates pressure.

Next, the perforator 50 is brought close to the earlobe Y to position the earlobe between the front and rear members C ′ and C ″ of the cartridge C, and the trigger 4
pull. Then, the front member C ′ retracts toward the rear member C ″, and the earlobe Y is sandwiched between the two members, so that it is possible to confirm whether or not the perforator is correctly oriented to the target position of the earlobe (FIG. 5). Of course, the cartridge C is hygienically clean and the earlobe Y is also sterilized.

When the safety device 10 is set, the trigger operation can be performed until the cartridge C is set or the next earlobe Y is located between the front and rear members C ′ and C ″ of the cartridge C. However, the tip 52 is larger than that.
Since the rear end 57 of the support rod hits against, it is not accidentally ejected.

When the safety device 10 is released and the trigger 4 is operated, the inclined release surface 48 of the releasing means 8 pushes the locking member 7 downward via the interlocking pin 47, so that the projection 4 of the member 7 is locked by the locking step. The ejection shaft 5 moves away from 34 and advances at a stroke to eject the piercing needle 21. Therefore, the piercing needle 21 instantly penetrates the earlobe Y and the needle tip is fitted into the stopper 22 (FIG. 6). When firing the piercing needle 21,
The tip portion 37 of the injection shaft 5 enters the accommodation hole 23, and the piercing needle
Reference numeral 21 is a head that breaks the stop member 25 and is ejected.

Thereafter, when the trigger 4 is returned and the support rod 3 is advanced, the piercing head is pulled out from the rear member C ″, the stopper 22 is pulled out from the groove 24, and the attachment to the earlobe Y is completed.

(Effect) Since the present invention is configured and operates as described above, by pulling the trigger 4 while gripping the grip 1, the front and rear members C ′, C ″ of the cartridge are gripped by the earlobe Y to adjust the position. It can be confirmed, and further, by pulling off the same trigger 4, the locking of the injection shaft 5 is released, and the piercing needle can be pierced through the earlobe momentarily by the elastic force of the spring 6 accumulated. A series of operations are performed by pulling the trigger 4 except for the operation of retreating, so that even an unskilled person can stably perform ideal drilling.

[Brief description of drawings]

1 is a perspective view, FIG. 2 is an exploded perspective view, FIGS. 3 to 6 are sectional views for explaining an operating state, FIG. 7 and FIG. FIG. 9 is a cross-sectional view of the safety device during operation and after release, and FIG. 9 is a cross-sectional view of the safety device portion. 1 ... grip, 2 ... main body, 3 ... support rod, 4 ... trigger integrally provided with support rod 3, 5 ... injection shaft, 6 ... injection spring, 7 ... locking member, 8 ... Release means integrally provided on the trigger, 9 ... Operation knob, 10 ... Safety device.

Claims (3)

[Claims] 1. A hollow main body 2 having a grip 1 at the bottom for gripping with a hand, and a pierced body which is provided at a front part of the grip so as to be movable rearward and is biased by a spring in a returning direction, and which is composed of two front and rear members. A support rod 3 for setting a front member of the cartridge is provided so as to project forward, and a support rod 3 is provided in the main body so as to be able to move back and forth, and a forward end of the cartridge presses a rear member of the cartridge forward, An operable injection shaft 5, a spring 6 that accumulates pressure when the injection shaft 5 is retracted, a locking member 7 biased in the same direction to lock the injection shaft 5 at a pressure accumulation position, and a locking member 7. The locking member 7 that engages with a part 47 of the trigger 4 and locks the rearward movement of the trigger 4 to the injection shaft 5.
Of the release means 8 having an engaging portion 48 for converting into a movement in the direction of releasing the lock and the rear portion of the trigger 4 and coming into contact with the rear end of the trigger 4 to stop its retreat, and from the same position. A piercing punch having a safety device (10) that can be adjusted to and away from the injection position to allow the trigger (4) to retract. 2. The pierce according to claim 1, wherein the injection shaft 5 has an operation knob 9 which is provided integrally with the injection shaft 5 and which protrudes to the outside of an elongated hole 40 formed in the main body 2 along the moving direction thereof. Punch. 3. The releasing means 8 is provided integrally with the trigger 4 in the form of an inclined cam, which engages a part 47 of the locking member 7 engaged with the trigger 4 by the rearward movement of the trigger 4 in the trigger direction. The piercing punch according to claim 1, having a different configuration.