WO2005023165A1 - Syringe needle melting apparatus - Google Patents

Abstract

A syringe needle melting apparatus wherein a syringe needle is melted more safely and more surely while preventing a leakage of an odor. A space in a float guide assembly (11) having a float (4) for guiding a syringe needle, a space in a roller electrode assembly (12) wherein the syringe needle is melted with roller electrodes (18) and (19), and a space in a dust box (51) for receiving the refuse are made to communicate with each other in an air-tight manner. Air is sucked from the dust box (51) through a filter (52) by an air pump. This suction begins before the melting is started and ends after the melting is finished.

Description

 Description Injection needle fusing device Technical field

 TECHNICAL FIELD The present invention relates to a needle cutting device for processing a used injection needle at the tip of a syringe. Background art

 Handling used syringes, especially their needles, is dangerous. For this reason, an injection needle fusing device or a syringe processing device for safely processing used injection needles has been conventionally used. In these devices, a large current flows through the injection needle by short-circuiting the circuit with the injection needle, and the injection needle is blown by the heat generated by this energization. Conventionally, as such a syringe processing device, for example, Japanese Utility Model Registration No. 3014242 (hereinafter referred to as “prior art 1 j”) and Japanese Patent Application Laid-Open No. 5-92026 (hereinafter “ Conventional technology 2) and Japanese Utility Model Registration No. 3008777 (hereinafter referred to as “conventional technology 3”).

The device according to the prior art 1 is configured such that a swarf container (paper pack) for storing swarf of an injection needle is also stored in a partitioned processing chamber for storing means for fusing the injection needle. The air in the processing chamber is suctioned by a sirocco fan through a catalyst filter and exhausted to the outside of the apparatus. Further, in the device according to the prior art 2, the support needle serving as a guide member, the support block serving as a slide member, and a spring serving as an urging member constitute injection needle insertion means. The indicator cylinder is slidably engaged over the period. Note that this support block is slidable and easy to manufacture. Generally, it is made of a resin material from the viewpoint of cost and cost.

 Further, the device according to Prior Art 3 is almost the same as the device according to Prior Art 2 described above, except that the injection needle inlet is formed integrally with the slider. The equipment had the following problems. That is, in the device of the prior art 1, the volume of the processing chamber is large, so that the concentration of odor generated when the injection needle is blown is low, and the deodorizing efficiency of the catalyst filter for removing odor is low. There was a problem.

 Further, in the device according to the prior art 2, when the syringe is set on the support block and pushed down in order to process the used injection needle, the air in the space closed by the support cylinder and the support block is released. There is a problem that the work of pushing down the support block by being pushed out from the lower opening of the nose promotes the diffusion of the odor when the injection needle is heated, and gives an uncomfortable feeling to the operator.

 Further, in the device according to the prior art 2, when the injection needle comes into contact with the first electrode and the second electrode, electric noise is generated at a moment when a current is applied to the injection needle, and the injection needle itself is generated. There is a problem that this electrical noise leaks out of the device from the part of the support block, which is the slide member, which is the large electrical opening, as an antenna at the top of the device, and adversely affects other devices. Furthermore, since there is no means for detecting whether or not the needle tip storage box is mounted on the processing device, the device is operated without mounting the needle tip storage box on the processing device. There is also the problem of getting lost.

Also, in general, the shape of the attachment portion of the injection needle to the syringe body is not common, and varies depending on the type of injection needle and the manufacturer. If they do not fit, the needle will not be held securely and the direction of the needle will tilt, and it will not fit into the through hole in the bottom plate of the slider holder, or through the gap between the syringe needle attachment part and the syringe needle inlet. There was a problem that sparks when the injection needle was melted leaked.

 In addition, there is a device disclosed in Japanese Patent Application Laid-Open No. 1-223964, but since this device is not provided with an electrical safety device, a thick metal object having a higher processing capacity (eg, If a clip or the like is inserted into the electrode, a larger current than expected (15 OA or more at a voltage of 6 V) will flow, causing a problem in that the device may be damaged or the operator may be in danger.

 Incidentally, there is a device disclosed in Japanese Patent Application Laid-Open No. 60-400600 as a device provided with an electrical safety device. However, this safety device has a fuse-like safety device provided on a circuit. When cutting a thick needle, the large current (15 OA or more at a voltage of 6 V) flows as described above, so the safety device is shut off before the needle is blown, and the process is interrupted. May not be able to complete. In order to avoid this, it is conceivable to adopt a switch that can handle a higher current.However, a switch with an overcurrent protection function that can pass a current of 150 A or more has a large volume, so it can be used in a small device. Cannot be implemented.

 Furthermore, although the above-mentioned fusing apparatuses require caution that the injection needle is blown by passing an electric current, no means is provided for the user to recognize the moment when the processing is started. However, there is a possibility that the user may perform an inappropriate operation during the processing.

 The present invention has been made in view of the above circumstances, and enables a user to reliably recognize the start of processing, prevent erroneous operations, efficiently deodorize odors, and reduce electric noise. It is an object of the present invention to provide a small-sized injection needle fusing device which is capable of handling various types of syringes, and capable of processing thick injection needles reliably and safely. Disclosure of the invention

The present invention provides a method for cutting an injection needle and melting the injection needle into a dust box. In the cutting apparatus, a fusing chamber component member forming a fusing chamber, a pair of two fusing members having conductivity disposed in the fusing chamber, a rotation mechanism for rotating the fusing member, and a fusing member A power application mechanism for applying power therebetween, a fusing unit that is guided into the fusing chamber and fusing the injection needle that has contacted the pair of fusing members, and a power source that supplies power to the power application mechanism. A power supply switch for turning on / off the power supply from the power supply to the power application mechanism; and a guide member and a surrounding member having a bottomed cylindrical shape and forming an introduction chamber. The fusing chamber is configured to be inserted into the enclosing member from the side and movably provided along the enclosing member, and the enclosing member is configured such that an inlet formed at the bottom thereof communicates with the fusing chamber. On the member The guide member is provided with a holding hole for holding the syringe on the upper surface, the syringe is held in the holding hole in a state where the injection needle is inserted into the introduction chamber from the holding hole, and the guide member is connected to the guide member. Guide means configured to guide the injection needle into the processing chamber through the introduction port of the enclosing member by moving the injection needle downward, and descent detection for detecting start of descent of the guide member. Means for notifying the descent of the guide member when the descent detecting means detects the descent of the guide member; and a mounting state in which the space in the dust box communicates with the fusing chamber in an airtight manner. A dust box receiving portion for holding the dust box in a state in which the dust box is in close contact with the member from below the fusing chamber, and a filter. And a suction means for sucking air from the dust box.

 In addition, the notification means stops the notification after the end of the fusing process (this may be configured.

Further, the dust box storage section includes a loading section in which the dust box is loaded, and a dust loaded in the loading section so as to be in the mounted state. It is preferable to have a close-contact separation mechanism for bringing a box into close contact with the fusing chamber component and for separating the dust box from the fusing chamber component when removing the dust box.

 In addition, there is provided an exchange mechanism for transitioning the state of the loading section between a first state in which the dust pox is easily loaded and unloaded and a second state different from the first state. The contact / separation mechanism causes the dust box to come into close contact with the fusing chamber member along with the transition from the first state to the second state, and causes the dust box to move from the second state to the first state. It is preferable that the dust box be separated from the fusing chamber constituent member in accordance with the transition to the state described above.

 It is preferable that the suction unit starts suction before the fusing process is started, and stops suction after the end of the fusing process.

 It is preferable that the guide means has a guide member, a surrounding member, and / or an opening for connecting the introduction chamber to the outside world between the guide member and the surrounding member.

 It is preferable that a communication part between the introduction port of the enclosing member and the fusing chamber is closed, and a shutter is provided that opens the communication part when pushed from the introduction chamber side. It is preferable that a part or the whole is made of a material having conductivity.

 Further, a dust box detecting means for detecting whether or not the dust box is held in the dust box housing portion, and a dust box detecting means for detecting that the dust box is not held in the dust box housing portion. It is preferable that the apparatus further comprises a release unit that keeps the power switch in an off state when is detected.

Further, a plurality of switches that are turned on and off in conjunction with each other are connected in parallel with each other, and power is supplied from the power supply to the power application mechanism. A power supply switch connected to a supply circuit and for turning on / off the power supply to the power application mechanism may be further provided. In this case, the plurality of switches have current capacities equal to each other. Monitoring the power supply state of each of the switches, and detecting a state where the current flowing through the switches exceeds 1 n (n is the number of switches) of the maximum current assumed by the injection needle fusing device. May further be provided with an overcurrent preventing means for turning off all the switches.

 Further, a holding member for holding the injection needle may be further provided, and the holding member may be detachably attached to a holding hole of the guide member. Brief Description of Drawings

FIG. 1 is a perspective view showing the appearance of an injection needle fusing device according to one embodiment of the present invention. FIG. 2 is a left side perspective view of the injection needle fusing apparatus with a cover removed, and FIG. 3 is a right side perspective view of the injection needle fusing apparatus with a cover removed. Fig. 4 is a right side perspective view showing the internal configuration of the injection needle fusing device, and Fig. 5 is a right side schematic view showing the state of communication of the space. FIG. 6 is a perspective view showing a roller electrode assembly and a motor assembly. FIG. 7 is a schematic view showing a positional relationship between a first roller electrode and a second roller electrode. FIG. 8 is a schematic side view showing a support structure for the second roller electrode. FIG. 9 is a perspective view showing a state in which the tray is pulled out, FIG. 10 is a schematic view showing a state in which the tray is seen through from the front side, and FIG. FIG. 12 is a schematic side view showing a stored state, FIG. 12 is a schematic side view showing a state in which the tray is pulled out, and FIG. 13 is a perspective view of the tray; FIG. 14 is a schematic side view of the tray showing a state where the dust box holder is raised, and FIG. 15 is a view in which the dust box holder is lowered. FIG. 16 is a schematic right side view of the tray showing a state in which the dust box holder is raised, and FIG. 16 is a perspective view from the rear showing a state in which the dust box holder is raised. FIG. 18 is a perspective view from the rear showing a state where the dust box is loaded. FIG. 18 is a perspective view of a tray showing a state where the dust box is loaded in the dust box holder. FIG. 19 is a perspective view of the dust box, FIG. 20 is a schematic cross-sectional view of the dust box, and FIG. 21 is a diagram in which a cap is connected to an exhaust port of the dust box. It is a schematic diagram showing a state. Fig. 22 is a schematic cross-sectional view showing the internal structure of the pump. Fig. 23 (a) is a schematic cross-sectional view showing the suction operation of the pump. FIG. FIG. 24 is a block diagram showing a control configuration, and FIG. 25 is a schematic diagram showing a state where an injection needle is inserted into an injection needle inlet. FIG. 26 is a perspective view showing the main switch. FIG. 27 (a) is a schematic diagram showing the state where the main switch is off, and FIG. 26 (b) is a diagram showing the state where the main switch is off. (C) is a schematic diagram showing that the main switch is on, and (d) is a schematic diagram showing that the main switch is on. FIG. 28 (a) is a schematic diagram showing a state of the main switch when the box detection lever does not detect the dust box, and FIG. b) The figure is a schematic diagram showing the state of the main switch when the box detection lever detects the dust box. FIG. 29 is a diagram showing the circuit configuration of the main switch 6. Fig. 30 (a) is a top view of the float guide assembly, (b) is a schematic cross-sectional view of the float guide assembly viewed from the front side of the injection needle fusing device, and (c) is a diagram. FIG. 3 is a bottom view of the float guide assembly, and FIG. 31 is a schematic cross-sectional view of the float guide assembly showing a state in which the shutter is open. Fig. 32 shows that FIG. 13 is a schematic cross-sectional view of a float guide assembly according to a third embodiment of the present invention. FIG. 33 is an enlarged perspective view showing a mounting portion of a syringe guide cap, and FIG. FIG. 35 is a perspective view showing the syringe guide cap from above, and FIG. 36 is a perspective view showing the syringe guide cap from below. Yes, FIG. 37 is a perspective view showing a stop plate attached to the bottom of the float guide. BEST MODE FOR CARRYING OUT THE INVENTION

 Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

 As shown in Fig. 1, the injection needle fusing device 1 of this example has its upper part covered with a plastic upper cover 2 and its lower part covered with an aluminum die-cast middle cover 3. ing.

 A handle 2a is formed on the upper surface of the upper cover 2, and an LED display window 7 for displaying a state of a battery 10 (see FIG. 2) described later is provided in front (front side) of the handle 2a. At the front, a circular opening is provided, from which the float 4 having the injection needle inlet 4a is exposed, and a buzzer 90 is provided to the right of the float. On the other hand, a main switch 6 is provided at the lower part on the right side of the middle cover 3, a terminal inlet 8 is provided near the main switch 6, and a tray 5 is provided at the lower front part.

 Next, an outline of the arrangement of the main parts in the injection needle fusing device 1 will be described with reference to FIGS. 2, 3, and 4. FIG.

The injection needle fusing device 1 includes a tray 5, a battery 10, a float guide assembly 11, a roller electrode assembly 12, an air pump 13, a control board 14, and a motor assembly 15 therein. I have. These are mounted on the base frame 9, main bracket 17 and the like.

 At the bottom of the needle fusing device 1, a base frame 9 that supports all of the device is arranged. At the approximate center of the base frame 9, a main bracket 17 is erected with its flat surface facing forward and backward. Note that the base frame 9 and the main bracket 17 have conductivity.

 A roller electrode assembly 12 for fusing the injection needle is attached to the middle position of the main bracket 17, and a motor assembly 15 for driving the roller electrode assembly 15 is mounted on the side of the roller electrode assembly 12. Supported by Kit 17.

 Above the roller electrode assembly 12, an injection needle is inserted, and a float guide assembly 11 for guiding the injection needle to the roller electrode assembly 12 is arranged. The float guide assembly 11 is also supported by the main bracket 1 via the support bracket 33. The float 4 described above is provided on the upper part of the float guide assembly 11.

 Below the roller electrode assembly 12, a tray 5 for accommodating the dust box 51 is installed so as to be able to be pulled out to the front side (see FIG. 18).

On the right side of the tray 5, there is a main switch 6. On the other hand, on the left side of the tray 5, an air pump 13 for sucking air from the dust box 51 is installed. The float guide assembly 11 described above, the roller electrode assembly 12 and the dust box 51 housed in the tray 5 are not only connected and arranged so as to be stacked vertically, but also in each As shown in Fig. 5, the space is connected Has been passed. Therefore, the air pump 13 can suck the air in the whole of the communicating space. However, the term "airtight" used herein is sufficient to prevent the internal odor from leaking out of these connection parts.

 On the rear side of the main bracket 17 of the base frame 9, a control board 14 for controlling the entire injection needle fusing device 1 and a battery 10 are arranged upright. At the upper end of the control board 14, an LED lamp 14 a for indicating the state of the battery 10 is installed, and the light is guided to the LED display window 7 (see FIG. 1) through the LED lens 16. It is like that.

 At the lower right end of the control board 14, a socket 14 b into which the terminal of the charging adapter for the battery 10 is inserted is located at a position corresponding to the terminal 8 of the adapter described above (see FIG. 1). Is provided.

 Next, the details of the roller electrode assembly 12 and the motor assembly 15 will be described with reference to FIG. 4, FIG. 6, FIG. 7, and FIG.

 The roller electrode assembly 12 blows the injection needle, and as shown in FIGS. 4 and 6, the electrode frame 12 a, the first roller electrode 18, the second roller electrode 19, and the brush An assembly 20, an electrode bracket 21, and the like are configured as main components.

The electrode frame 12a is non-conductive, and at the center thereof, a U-shaped and electrically conductive electrode bracket 21 is provided. A first roller electrode 18 is connected to the electrode bracket 21 via a pair of left and right non-conductive first bushes 22. Similarly, a pair of left and right non-conductive second The second roller electrode 19 is rotatably supported via the bush 23 of the second roller electrode 19, and the axial position of the second roller electrode 19 is changed by the second bush 23 or the like. Supported as possible. An electrode plate 24 having conductivity is arranged in a U-shaped opening of the electrode bracket 21. Thus, the first roller electrode 18 and the second roller electrode 19 are surrounded on four sides (front, rear, left and right) by the electrode bracket 21 and the electrode plate 24.

 A voltage is applied between the first roller electrode 18 and the second roller electrode 19 having conductivity, and the short-circuit between the two is made by the injection needle. Melts the injection needle. Therefore, a discharge hole 1 2b is formed in the area surrounded by the electrode bracket 21 and the electrode plate 24 of the electrode frame 12a for passing the swarf of the falling injection needle. (See Figure 4).

 The first roller electrode 18 has a shaft extending outside the electrode bracket 21, and a cylindrical portion 18 a is provided in a portion extending rightward in FIG. 6 among them. Similarly, the axis of the second roller electrode 19 extends outside the electrode bracket 21 (to the left in FIG. 6), and a cylindrical portion 19a is provided at the tip. A cylindrical member made of a material suitable for electrical contact is pressed into the cylindrical portion 18a and the cylindrical portion 19a, and the cylindrical portion 18a and the surface portion of the first roller electrode 18 are pressed. Means that the cylindrical portion 19a and the surface of the second roller electrode 19 are in a conductive state.

 A pair of left and right brush assemblies 20 is installed at positions corresponding to the cylindrical portions 18a and 19a on the left side of the electrode bracket 21. The brush assembly 20 is for applying a voltage to the first roller electrode 18 and the second roller electrode 19 through the cylindrical portions 183 and 19a.

Driven gear 27 is fixed further ahead of cylindrical portion 18a (to the right in FIG. 6). The first roller electrode 18 is It is configured to be rotated by the rotational driving force of the motor assembly 15 input through 27.

 In addition, a first idle gear 28 is fixed to a portion of the first roller electrode 18 extending to the other side (to the left in FIG. 6). On the other hand, a second idler gear 29 is fixed to a portion of the second aperture electrode 19 extending to the left of the electrode bracket 21 at a position corresponding to the first idler gear 28. I have. The second idle gear 29 is combined with the first idle gear 28 so that the rotation of the first roller electrode 18 is transmitted to the second roller electrode 19 through these. Has become.

 The brush assembly 20 includes a support bracket 20a, a brush support 25 having elasticity, and a pair of brush pieces 25a. The support bracket 20a supports the entire brush assembly 20 and is provided on the electrode frame 12a. The brush support 25 is supported with one end fixed to the support bracket 20a.

 The brush support 25 is bifurcated, and a pair of brush pieces 25a each having a V-shaped concave portion on the upper surface is fixed to the tip of the brush support 25. The brush piece 25a is pressed upward, that is, pressed by the cylindrical portions 18a and 19a by a compression panel 26 (see FIG. 4) disposed below the brush support 25. I have. That is, the brush assembly 20 secures electrical conduction between the cylindrical portions 18a and 19a by pressing the brush pieces 25a against the cylindrical portions 18a and 19a. The compression panel 26 is also provided on the electrode frame 12a.

The motor assembly 15 is a driving source for rotating the first roller electrode 18 and the second roller electrode 19 as described above, and is attached to the main bracket 17. A motor 15b, which is a source of driving force, is attached to a motor bracket 15a, and a drive gear 15c is fixed to the output shaft. Various gears constituting a reduction mechanism are attached to the motor bracket 15a, and the rotation of the motor 15b is input to the driven gear 27 after being reduced by the reduction mechanism. Specifically, the reduction mechanism is composed of a first two-stage reduction gear 15 d combined with the drive gear 15 c and a second two-stage reduction gear combined with the first reduction two-stage gear 15 d. The other gear of the second reduction two-stage gear 15 e is combined with the driven gear 27.

 As shown in FIG. 7, the second roller electrode 19 is installed at a position such that the vicinity of its outer periphery intersects with the insertion path X. The insertion path X is a path through which the injection needle 5 10 passes when the injection needle 5 10 is inserted from the injection needle inlet 4 a (see FIG. 1).

 —The first roller electrode 18 is obliquely below the second roller electrode 19, and more specifically, from the intersection 18 1 to the second roller electrode “! At a position where the insertion path X intersects the circumferential surface of the first roller electrode 18. Here, the intersection 18 1 is the rotation center 18 0 of the first roller electrode 18. Is the position where the vertical line passing through the first roller electrode 18 intersects the upper circumferential surface of the first roller electrode 18.

As described above, the first roller electrode 18 is supported by a pair of left and right first bushes 22, while the second roller electrode 19 is supported by a pair of left and right second bushes 23. I have. In this case, since the first bush 22 is fixed to the electrode bracket 21, the position of the shaft of the first roller electrode 18 does not move. On the other hand, as shown in FIG. 8, the second bush 23 is configured to be rotatable around a fulcrum 23a formed integrally with the bush 23. Therefore, the block centered on this fulcrum 23a 200

 The axis of the second roller electrode 19 can be moved with the rotation of the brush 23. However, when the injection needle is not inserted, the position of the second roller electrode 19 is fixed at a predetermined position, and the interval between the second roller electrode 19 and the first roller electrode 18 is kept constant.

 The structure for supporting the second bush 23 is specifically as follows. At substantially the center of the second bush 23, a fulcrum 23a is formed in the body, and the fulcrum 23a is rotatably engaged with the fulcrum hole 2la of the electrode bracket 21. Have been. A bearing 23 b for supporting the second roller electrode 19 is provided at one end of the second bush 23, and the bearing 23 b is formed in an oval hole 21 of the electrode bracket 21. b is engaged. Therefore, the second bush 23 can rotate around the fulcrum 23 a by the margin of the oval hole 21 b (reference t in FIG. 8). A spring hole 23c is provided at the other end of the second bush 23. The spring hole 23c is provided between the hook portion 21c formed on the electrode bracket 21 and the spring hole 23c. The bias spring 3 1 is hung. When the bias spring 31 pulls the hook portion 21c, the second bush 23 is always urged in the counterclockwise direction. In this state, the bearing portion 23b has the oval hole 2c. Since the first roller electrode 18 and the second roller electrode 19 are in contact with the lower edge of 1b, a predetermined gap is maintained.

Thus, in FIG. 7, when the injection needle 5 10 to be processed is inserted along the insertion path X, the cylindrical side surface of the injection needle 5 10 is brought into contact with the second roller electrode 19. When the contact is made and the injection needle 5 10 is further inserted, the second roller electrode 19 is pushed by the cylindrical side surface of the injection needle 5 10 and moves so as to retreat from the insertion path X. However, the amount of movement of the second roller electrode 19 is a minimum amount to avoid the injection needle 5 10, and the second roller electrode 19 is kept in contact with the injection needle 5 10 . Thereafter, when the injection needle 510 is further inserted, the tip of the injection needle 510 reaches the circumferential surface of the second roller electrode 19 and comes into contact therewith. The second roller electrode 19 and the first roller electrode 18 are short-circuited by the injection needle 5 10.

 Next, the float guide assembly 11 will be described with reference to FIG. The float guide assembly 11 is disposed above the roller electrode assembly 12 and guides the injection needle to be processed to the roller electrode assembly 12. The float guide assembly 11 includes a float guide 32, a float 4 and a compression guide. A spring 34, a float detecting mechanism 35, a support bracket 33 for supporting the spring 34, a switch bracket 36, and the like are provided.

 The float guide 32 surrounds the inserted needle and is made of a conductive bottomed cylindrical member.The main bracket is also connected to the support bracket 33, which is also conductive. Attached to 17 In this state, the lower surface of the bottom plate 32a of the float guide 32 has the upper end 21d of the electrode bracket 21 (see section 6) and the upper end of the electrode plate 24. 24 a (see Fig. 6) so that it is airtight. Therefore, odor does not leak out of the roller electrode assembly 12 and the float guide assembly 11 from this portion. As described above, "The airtight J should be enough to prevent odor from leaking out. In addition, the central part of the bottom plate part 32a has an inlet through which an injection needle passes. 2 b is open.

A compression spring 34 is installed in the float guide 32, and a float 4 is installed on the compression spring 34 so as to be movable in the expansion and contraction direction of the compression spring 34. I have. The float 4 is for holding the injector in a guide, and has a central inlet 4a into which an injection needle is inserted. Normally, float 4 is a compression spring 3 and is located near the upper end of the float guide 32, and its movable distance is set to be equal to or longer than the length of the injection needle expected to be processed.

 The float detection mechanism 35 consists of a limit switch 37, a detection arm 38, etc., and is mounted near the upper end of the support bracket 33 to detect whether the float 4 is pushed down. Then, the detection result is output to a motor control circuit 81 (see FIG. 24) installed on the control board 14 described later.

 The detection arm 38 has its lower end supported in a rotatable state about a fulcrum 33 a provided near the upper end of the support bracket 33, and is counterclockwise rotated by a spring (not shown). Being energized. The upper end 38a of the detection arm 38 is bent obliquely toward the float guide 32, and when the detection arm 38 is rotated counterclockwise, the upper end 38a is turned. Enters the notch 32 c provided at the upper side of the float guide 32. Therefore, the angular position of the detection arm 38 changes according to the state of the float 4.

The limit switch 37 detects such a change in the angular position of the detection arm 38, and is installed behind the detection arm 38 (the right side in FIG. 4). The limit switch 37 is supported by a switch bracket 36 attached to the support bracket 33. When the float 4 is pushed into the float guide 32, the upper end 38a protrudes into the float guide 32, and the entire detection arm 38 is counterclockwise. Is turned. On the other hand, in a state where the float 4 is not pushed into the float guide 32, that is, when the float 4 is located at the uppermost position, the existence of the float 4 is an obstacle to the upper end 38a, so that the float 4 is obstructed. Guide 3 The entire camera 38 is turned clockwise. Then, such an angular position of the detection arm 38 is detected by the limit switch 37.

 As described above, since the connecting portions of the roller electrode assembly 12 and the float guide door assembly 11 are in close contact with each other, no odor leaks out of the connecting portions. As will be described later, the connection between the dust box 51 and the roller electrode assembly 12 is also in close contact, and no odor leaks out of these spaces from here. In other words, by minimizing the space in which odors are diffused in the device, deodorization by the air pump 13 and the deodorizing filter 52 described later can be efficiently performed.

 Next, the tray 5 and the dust box 51 housed therein will be described in detail with reference to FIGS. 9 to 21. FIG.

 The tray 5 is loaded with a dust box 51 and is configured to be able to be pulled out from the apparatus body. Also, when the tray 5 is pushed in, the dust box 51 is moved upward, and the dust box 51 comes into close contact with the roller electrode assembly 12 so that the internal spaces of the two can communicate with each other without any gap. I have.

 The tray 5 is configured such that the guide plate 41, the slide bracket 40, and the tray frame 39 are connected to each other so as to be slidable, so that the tray 5 can be pulled out.

The connection between the guide plate 41 and the slide bracket 40 is specifically realized by the following structure. The guide plate 41 is a substantially plate-shaped member that is long in the direction in which the tray 5 is pulled out. The guide plate 41 is fixed to the base frame 9 by a pair of stepped cylindrical seats 41 a fixed to the base frame 9. On the other hand, the slide bracket 40 is a plate-like member that is long in the pulling-out direction, and its left and right ends are formed in a U-shape. In the center in the width direction, an oval long hole 40 a Is formed. Therefore, the stepped cylindrical seat 41 a is passed through the oval long hole 40 a, and the slide bracket 40 is sandwiched between the guide plate 41 and the base frame 9 in a slideable state. The two are connected.

 The right and left ends of the slide bracket 40 are formed in a U-shape, and the lower side of the side walls 39c and 39d of the tray frame 39 have legs 39c protruding symmetrically outward. 'And 39d' are provided, and the legs 39c 'and 39d' are slidably engaged with the U-shaped portion of the slide bracket 40. As a result, the two members are connected so that they can slide in the pull-out direction.

 In addition, the slide bracket 40 includes a pair of left and right detent springs 42 and L-shaped stoppers 43. The L-shaped stopper 43 prevents the tray 5 from being pulled out too much and coming off the slide bracket 40. The L-shaped stopper 43 has a leading end protruding upward through an opening of the slide bracket 40 and hits a rear end wall 39 r provided at the rear end of the tray 5, thereby causing the tray 5 to move. The withdrawal amount is regulated (see Fig. 12).

The detent springs 42 increase the integration between the slide bracket 40 and the tray 5, so that when the tray 5 that has been pulled out with respect to the slide bracket 40 is pushed in, the slide bracket 4 This is to ensure that 0 is pushed with tray 5. The arm-shaped tip portion 42 a of the detent spring 42 is in contact with the bottom surface of the tray frame 39 as shown in FIG. Therefore, the tray 5 does not slide with respect to the slide bracket 40 until the force for pushing the tray 5 exceeds the force of the detent spring 42. During this time, the rosette slide bracket 40 slides against the guide plate 41. Will do.

 As shown in FIG. 13, the tray 5 includes a tray frame 39, a dust box holder 44, a pull-down arm 45, and a lock arm 48 as main components.

 The tray frame 39 has an operation opening 39b formed in a front wall 39a thereof, and a pair of left and right side walls 39c and 39d is provided so as to extend rearward. On the right side in FIGS. 13 and 14, a dust box holder 44 is provided.

 The dust box holder 44 is for accommodating the dust box 51, and has four side walls (front side wall 44a, left and right side walls 44b and 44d, rear side wall 44c) and a bottom plate 4b. 4 e, and a partition wall 4 4 f extending forward from the upper end of the front side wall 4 4 a in the horizontal direction. A pair of hook portions 4 is provided at the upper front of the left and right side walls 4 4 b and 4 4 d. 4 b ′ and 44 d ′ are formed.

 The pull-down arm 45 and the lock arm 48 constitute a part of a mechanism for vertically moving the dust box 51 attached to the dust box holder 44. Further, the lock arm 48 constitutes a part of a mechanism for preventing the dust box 51 moved upward from being lowered.

Pull ■ The down arm 45 has a handle 45 a bent in a crank shape and left and right side plates 45 b and 45 c bent symmetrically and straddling the tray frame 39 and extending rearward. A pair of left and right horizontal grooved holes 45d and 45e are formed in the front region of the left and right side plates 45b and 45c, and a pair of left and right horizontal holes are formed in the rear region. Groove cams 45 f and _{45 g} are formed. The groove cams 45f and 45g have portions (groove holes 45 1 = 'and 45g') parallel to the horizontal groove holes 45d and 45e. Further, the left and right plates 45b and 45c are provided with spring holes 45h and 45i in the middle.

Posts 39 e and 39 f are slidably engaged with the horizontal slotted holes 45 d and 45 e, and similarly, the posts 39 d and 45 e are inserted into the slotted holes 45 and 45 _g ′. G and 39 h are slidably engaged. The posts 39e, 39f, 39g and 39h are formed integrally with the side walls 39c and 39d.

 The side walls 39c and 39d of the tray frame 39 are provided with vertical square holes 39i and 39j for guiding, and the pair of left and right shoulder collars 46 and 47 protrude inside. Colored portions 46a and 47a are provided. The collar portions 46a and 47a penetrate the groove cams 45f and 45g and the guide vertical square holes 39i and 39j in a vertically slidable manner. The dust box holder 44 is fixed to the side walls 44b and 44d, respectively.

 The lock arm 48 includes left and right symmetrical arm portions 48 a and 48 b and a hook portion 48 c connecting the two arms. Subarm portions 48a 'and 48b' bent into an L shape and spring holes 48d and 48e are formed. The fulcrum posts 39k and 39I are integrally formed on the side walls 39c and 39d. On the other hand, fulcrum holes 48e and 48f are formed in the arm portions 48a and 48b. The arm portions 48a and 48b are rotatable, and the fulcrum holes 48e and 48f are engaged with the fulcrum posts 39k and 39I.

The sub arm portions 48a 'and 48b' penetrate through the openings 39m and 39n provided in the side walls 39c and 39d, and the ends thereof are connected to the side walls 44b and 44b. In the openings 44 g and 44 h provided in d, It is engaged without play.

 Pull ■ A pair of bias springs 49 and 50 are provided between the spring holes 45 h and 45 i of the down arm 45 and the spring holes 48 d and 48 e of the lock arm 48. As shown in FIG. 14, the pull-down arm 45 is retracted to the rear (to the right in FIG. 14) by the force of the bias springs 49 and 50 as shown in FIG. . On the other hand, the lock arm 48 is urged clockwise, and the hook portion 48 c is hooked on the rear end of the guide plate 41. The dust box holder 44 is pushed up to the highest position by the sub-arms 48a 'and 48b'.

 In the dust box 51, a container part 51a and a lid 51a 'are integrally formed, and the container 51a and the lid 51a' are connected by a film-shaped hinge 51d. The container section 51a includes a slag container 51e having an opening 51a "into which smelt falls, and a filter chamber 51f defined by a partition wall 51g. They communicate with each other through ventilation holes 51h provided at a predetermined height of 51g.

A deodorizing filter 52 is accommodated in the filter chamber 51f. A first air chamber 52a and a second air chamber 52b are formed before and after the deodorizing filter 52 in the filter chamber 51f. Among them, the second air chamber 52b is provided with an exhaust port 52c. The position of the exhaust port 52 c is matched with the dust box holder 44 and the tray frame 39. That is, when the dust box 51 is attached to the dust box holder 44, the opening 39t (see FIG. 16) opened on the rear surface of the tray frame 39 and the dust box holder 44 The exhaust port 52c is positioned so that it can be seen from the opening (not shown) formed in the side wall 44c. Next, the operation of pushing and pulling out the tray 5 and the operation of moving the dust box 51 up and down, which are performed accordingly, will be described.

 In Fig. 14, put your hand through the operation port 39b of the tray 5, put your finger on the handle 45a, and grasp it between the front wall 39a of the tray frame 39 and pull down. When the arm 45 is pulled forward (to the left in FIG. 14), as shown in FIG. 15, the pull cam 45 f and the slope 4 g of the 45 g are moved with the movement of the pull-down arm 45. 5j and 45k push down the shoulder collars 46 and 47. Along with this, the dust box holder 44 also descends while keeping the level.

 When the dust box holder 44 descends, the lock arm 48 rotates counterclockwise about the fulcrum posts 39 k and 39 I. As a result, the lower end 48c 'of the hook portion 48c is positioned above the upper surface of the guide plate 41, and the lock is released.

 Pulling down the tray 5 while holding the pull-down arm 45, pulls out the tray 5 and the slide bracket 40. In this case, as shown in FIG. 11, since the pressing force of the detent spring 42 is acting, the tray 5 and the slide bracket 40 are integrally pulled out. Pull ■ If the force required to pull the down arm 45 toward you is set to be weaker than the force to pull the tray 5 toward you, simply pull your finger on the handle 45 a and pull it toward you Only when the tray 5 is pulled out, the dust box holder 44 also comes down. In this case, the operability is good because the user does not have to be conscious of “holding J” as described above.

 When the slide bracket 40 is pulled out by a predetermined amount, the rear end of the oval elongated hole 40a comes into contact with the stepped cylindrical seat 41a, and the slide bracket 40 cannot be further drawn out.

Furthermore, pulling the tray 5 stakes out the pressure of the detent springs 42. , 〜, _

 2005/023165

 23 Only tray 5 is pulled out. Eventually, at the position where the rear end wall 39 r of the tray frame 39 touches the L-shaped stop 43, the tray 5 cannot be pulled out any further. In this state, the detent springs 42 are fitted into the V-shaped recesses 39s formed on the bottom surface of the tray frame 39 (see FIG. 12).

 If you release the tray 5 after pulling out the tray 5, the pull down 45 will be pulled back by the bias springs 49 and 50. However, since the lower end 48 c ′ of the hook portion 48 c of the lock arm 48 is on the guide plate 41, the clockwise rotation of the lock arm 48 is prevented. Therefore, the dust box holder 44 is kept lowered while the tray 5 is being pulled out.

 Next, as shown in FIG. 18, the dust box 51 is attached to the dust box holder 44 with the lid 51a 'opened. When the dust box 51 is pushed all the way down, the crocodile portions 5 1b and 5 1c that protrude to the left and right of the dust box 51 become under the hook portions 4 4b 'and 4 4d' of the dust box holder 44 And the dust box 51 is loaded. After the dust box 51 is loaded, the tray 5 is pushed in. At this time, contrary to the time when the tray 5 is pulled out, as shown in FIG. 12, the detent spring 4 2 force <the state in which the tray 5 remains engaged with the V-shaped recess 39 s of the tray frame 39, that is, Then, the tray frame 39 and the slide bracket 40 move back together.

When the slide bracket 40 is retracted by a predetermined amount, the front end of the oval elongated hole 40a comes into contact with the stepped cylindrical seat 41a. Then, the detent springs 42 are disengaged from the V-shaped recess 39 s of the tray frame 39, and thereafter, only the tray 5 is retracted. When tray 5 retracts by a predetermined amount, The hook part 48 c of the arm 48 comes off the guide plate 41. As a result, the lock arm 48 is rotated clockwise by the action of the bias springs 49 and 50, so that the hook portion 48c falls to the rear side of the guide plate 41. That is, it is locked.

 At the same time, the dust box holder 44 is pushed up to abut the lower surface of the electrode frame 12a, with the frame 51a of the opening 51a "of the dust box 51 mounted therein being pressed. (Refer to Fig. 4.) Therefore, the dust box 51 and the electrode frame 12a are in close contact with each other, and no odor leaks out from this part. The suction cap 53 is connected to the exhaust port 52c of 44. (See Fig. 21.) The tube 54 connected to the suction cap 53 is connected to the air pump 13.

 In this example, the dust box 51 can be loaded by pulling out the tray 5, but the dust box can be loaded by changing the attitude of the tray 5 or the dust box holder 44. It is good.

 Next, details of the air pump 13 will be described with reference to FIGS. 22 and 23. FIG. As shown in FIG. 2, the air pump 13 is provided with a pump 55 and a magnet 60 for driving the pump 55.

As shown in FIG. 22, the pump 55 includes an intake chamber 55 a having an intake port 56 a, an exhaust chamber 55 b having an exhaust port 56 b, and a variable chamber 55 c. In addition, the intake chamber 55a and the exhaust chamber 55b are formed in a rigid main body member 56, and their volumes do not change. On the other hand, the variable chamber 55c is composed of a main body member 56 and a diaphragm 57 made of rubber or the like, and the volume of the diaphragm 57 changes as the diaphragm 57 is deformed. A state in which the intake chamber 55 a and the exhaust chamber 55 b communicate with the variable chamber 55 c However, a suction valve 58 is provided between the intake chamber 55a and the variable chamber 55c, and air flows only from the intake chamber 55a to the variable chamber 55c. Can be. Similarly, an exhaust valve 59 is provided between the exhaust chamber 55b and the variable chamber 55c, so that air can flow only from the variable chamber 55c to the exhaust chamber 55b. The intake port 56 a is connected to the exhaust port 52 c of the dust box 51 by a tube 54 (see FIG. 21). The magnet 60 is a drive source for driving the pump 55, and is controlled by an after-mentioned pump driver circuit 82 (FIG. 24).

 When the diaphragm 57 is pulled by the magnet 60 in the direction of the arrow X in FIG. 23 (a), the volume of the variable chamber 55c increases, and the pressure in the variable chamber 55c decreases. The intake valve 58 opens, and air is sucked into the variable chamber 55c through the intake port 56a and the intake chamber 55a. At this time, the discharge valve 59 is closed.

 Subsequently, as shown in FIG. 23 (b), when the diaphragm 57 is pushed in the direction of the arrow Y by the magnet 60, the volume of the variable chamber 55c is reduced, and the inside of the variable chamber 55c is reduced. As a result of the increase in the pressure, the discharge valve 59 is opened, and the air in the variable chamber 55c is discharged through the exhaust chamber 55b and the exhaust port 56b.By repeating the above operation, Air is continuously exhausted.

 Next, a control configuration of the injection needle fusing device will be described with reference to FIG. FIG. 24 is a system block diagram showing a circuit configuration of the present apparatus.

 The supply of electric power to each part constituting this apparatus and the control of its operation are performed by various control circuits provided on the main switch 6, the sub-switch 6b, and the control board 14.

The switching of the voltage application state (ON / OFF) to the first roller electrode 18 and the second roller electrode 19 is performed by the main switch 6, and the power supply state to the motor 15b and the air pump 13 (supply) (Off of supply) The switching is performed by sub-switch 6b. The sub-switch 6b is linked with the main switch 6, and when the main switch 6 is ON, the sub-switch 6b is always ON. Conversely, when the main switch 6 is OFF, the sub-switch 6b Is always OFF.

 The above-described power supply to the motor 15b and the air pump 13 is performed by the battery 10 (+ pole), the control board "14, the sub-switch 6b, the control board 14, the air pump 13 And motor 15b to control board 14 to sub-switch 6b to control board 14 to battery 10 (negative pole). In some cases, signal lines and power supply lines are collectively represented by a single line.

 The operation control of the motor 15 b and the air pump 13 is performed by various control circuits provided on the control board 14. The control board 14 includes a motor control circuit 81, an air pump driver circuit 82, a charging control circuit, and a voltage circuit; Numeral 2 controls the operation state of the air pump 13, that is, suction. In this embodiment, the air pump driver circuit 82 merely controls the suction speed to be constant, but the suction speed is finely adjusted according to the timing (for example, before and after the fusing process and during the fusing process). Of course, it is possible to change. The timing of starting and stopping the air pump 13 is determined depending on whether or not power is supplied through the above-described path. That is, the air pump 13 starts operating when the sub-switch 6b is turned ON, and stops operating when the sub-switch 6b is turned OFF.

The motor control circuit 81 includes a motor 15b, that is, a first roller electrode 18 And control the rotation of the second roller electrode 19 and the sounding of the buzzer 90. The motor control circuit 81 starts the operation of the motor 15b when the limit switch 37 detects that the float 4 has been pressed, and also sounds the buzzer 90, and after a predetermined time elapses. The motor 15b is stopped, and the buzzer 90 is stopped at the same time. The operation time of the motor 15b is a time period during which the melting of the injection needle 5110 can be completed with a margin, and in this example, the operation of the motor 15b is started 8 seconds after the start of operation. And the buzzer 90 stops the sounding. Further, the motor control circuit 81 determines the timing to stop the motor 15b and the buzzer 90 by using the CR integration circuit.

 The battery power detection circuit 84 detects the remaining power of the battery 10. The battery power detection circuit 84 is configured to notify the user of the remaining amount by causing the LED 14a to emit light according to the detection result.

 The charge control circuit 83 is a circuit for charging the battery 10, and is charged by connecting the AC adapter 550 to the socket 14b.

 Next, details of the main switch 6 will be described with reference to FIGS. 26, 27, 28 and 29. FIG.

 As shown in FIG. 26, the main switch 6 is provided with a box detection lever 66 for detecting whether or not the tray 5 and the dust box 51 are mounted. The operation of the switch cap 6 9 is not accepted.

As shown in FIG. 27 (a), the main switch 6 controls the movement of a switch cap 69, which is rotatable about a rotation axis 69a, via an intermediate lever 72. Output to connection terminal 7 7 It is configured to contact and separate the terminal 79. Also, the reset lever 74 is operated in accordance with the radius state of the bimetallic bar 8 to release the transmission mechanism by the intermediate lever 72, thereby separating the connection terminal 77 from the output terminal 79. ing.

 The fulcrum post 68, the post 70a, the fulcrum post 70b, and the locking wall 70c are fixedly installed on a switch frame (not shown) of the main switch 6.

 The switch cap 69 is rotatably engaged with the fulcrum post 68, and is urged in the direction of arrow B by the torsion spring 71a. The torsion spring 7 1 a is supported on the rotating shaft 69 a of the switch cap 69, one end of which is connected to a post 69 b provided on the switch cap 69 itself, and the other end is connected to the post 7. By being applied to 0a, the switch cap 69 is urged in the above-described arrow B direction.

 One end of the intermediate lever 72 is close to the stopper 74a of the reset lever 74, and the other end is provided with a groove 74b, and the connection terminal 77 passes through the groove 74b. Have been. The intermediate lever 72 moves the connection terminal 77 by pressing the connection terminal 77 in the groove portion 74b. As described above, the intermediate lever 72 is linked to the switch cap 69, and operates in response to the movement of the switch cap 69. Since the intermediate lever 72 is not supported by a fixed post or the like, its movement is not a simple rotation but a translation of the entire intermediate lever 72. I have. The link between the intermediate lever 72 and the switch cap 69 is made by a detent bar 73 and a leaf spring 71b.

The detent bar 73 is a highly rigid rod-shaped member, and has a shaft 73 a protruding in a direction perpendicular to the longitudinal direction at one end, and a shaft at the same end as the shaft 73 a at the other end. An axis 73b parallel to 73a is formed. Deten The shaft 7 3a is fitted into the shaft hole 6 9c of the switch cap 69, while the shaft 3b is fitted into the shaft hole 7 2a of the intermediate lever 72. The cap 69 and the intermediate lever 72 are connected.

 The leaf spring 71b is bent in the shape of a letter, and is hung around the rotating shaft 69a between the post 69b and the shaft 73a of the detent bar 73. Have been. The bias by the leaf spring 71b acts in a direction in which the post 69b and the shaft 73a move away.

Reset Trevor 7 4 has its entire shape is a substantially L-shaped, at the position of the bending curve portion, it is supported in rotatable state by the fulcrum bosses Bok 7 0 b, the engaging wall 7 0 _G and reset It is urged in the direction of arrow C by a compression spring 75 provided between the lever and one end of the lever 74. Further, the input terminal 76 and the output terminal 79 are fixedly provided.

 The connection terminal 77 has elasticity, and one end thereof is fixed to the input terminal 76. The other end of the connection terminal 77 is moved by the intermediate lever 72 so that the other end is in contact with or separated from the output terminal 79.

 One end of the bimetal bar 78 is fixed to the input terminal 76. The other end is close to one end of the reset lever 74. When the temperature rises, the bimetal bar 78 bends and deforms in a direction in which the reset lever 74 is rotated counterclockwise.

As shown in Fig. 27 (b), when the switch cap 69 is pushed in the direction of arrow D against the urging force of the torsion spring 71a by the user, the leaf spring 71b Then, the shaft 73a of the detent bar 73 is pushed down, so that the intermediate lever 72 is lowered, and one end thereof comes into contact with the stopper portion 74a of the reset lever 74. In addition, one end of the connection terminal 77 is pressed against the upper end of the output terminal 79 by being pushed by the intermediate lever 72. In this state, the position of the axis 73b of the detent bar 73 is fixed. ing.

 Further, when the switch cap 69 is pushed in, the detent bar 73 moves upward with the axis 73 a moving against the urging force of the plate panel 71 b while the axis 73 a moves around the axis 73 b. Rotate in E direction. Then, when the shaft 73a passes on a line connecting the fulcrum post 68 and the center of the shaft 73b, the shaft 73a is stopped and held as shown in FIG. 27 (c). In this state, conduction between the input terminal 76 and the output terminal 79 is maintained.

 By the way, if an excessive current flows between the input terminal 76 and the output terminal 79, the input terminal 76 generates heat. Then, when this heat is transmitted to the bimetal bar 78 and reaches a predetermined temperature or higher, the bimetal bar 78 deforms radially as shown in FIG. 27 (d). This deformation force of the bimetal bar 78 turns the reset lever 74 in the direction of the arrow against the urging force of the compression spring 75.

Then, one end of the intermediate lever 72 is disengaged from the stopper portion 74a of the reset lever 74. As a result, the connection terminal 77 is separated from the output terminal 79, and the current is cut off. Further, the fixed position of the shaft 73b is released, and the switch cap 69 is rotated in the direction of arrow B by the urging force of the torsion spring 71a. Then, the intermediate lever 72 is raised. In addition, the bimetal bar 78 cools to its original shape due to the interruption of the current. The reset lever 74 also rotates in the direction of arrow C, and returns to the state shown in FIG. 27 (a). Next, the box detection lever 66 will be described with reference to FIGS. 26 and 28. The switch bracket 65 on which the main switch 6 is mounted has a support shaft hole 65a, in which the box detection lever 66 can rotate in a horizontal plane. It is installed in a state. The box detection lever 66 is connected to the bias spring 67. Therefore, it is urged in the direction of arrow A. One end of the box detection lever 66 is provided with a box detection section 66a, and the other end is provided with a pressing lever 66b. When the tray 5 is pushed in, the box detecting part 66 a is connected to the opening 39 u provided in the tray frame 39 (see FIG. 16) and the same as the dust box holder 44 provided in the dust box holder 44. Through the opening (not shown) in the dust box holder 44. On the other hand, the tip of the pressing lever portion 66 b is opposed to the reset lever 74.

 If the tray 5 is pulled out, or if the tray 5 is pushed into the device without the dust box 51, the bias spring 67 is attached as shown in Fig. 28 (a). Due to the force, the pressing lever part 66 b rotates the reset lever 74 in the direction of arrow F. As described above, in this state, even if the user presses the switch cap 69, the main switch 6 does not become ON. When the hand is released from the switch cap 69, the state returns to the OFF state (Fig. 27 (a)). On the other hand, in a state where the dust box 51 is correctly loaded and the tray 5 is pushed in, as shown in FIG. 28 (b), the box detecting section 66a is moved by the dust box 51 to the arrow. By being pushed in the direction indicated by G, the entire box detection lever 66 rotates clockwise, and the pressing lever portion 66 b moves away from the reset lever 74. Therefore, in this state, the main switch 6 can be turned ON.

As described above, when the dust box 51 is not loaded, or when the tray 5 is pulled out, the main switch 6 is not turned on, so that the injection needle fusing device has high safety. In adopting such a configuration, it is not necessary to increase the number of contact points on the circuit, so there is no increase in electrical loss (line drop), the structure can be simplified, and the cost is reduced. Can also be obtained. Next, the circuit configuration of the main switch 6 will be described with reference to FIG. The main switch 6 includes switch circuits S 1 and S 2, overcurrent detectors T 1 and T 2, and switch release means 71.

 The switch circuit S 1 and the switch circuit S 2 are connected between the first roller electrode 18 and the battery 10, and are used for ON / OFF the circuit. The switch circuits S 1 and S 2 have the same current capacity and are connected in parallel with each other.

 The overcurrent detectors T 1 and T 2 are provided to prevent excess current from flowing through the switch circuits S 1 and S 2, and the overcurrent detector T 1 is connected to the switch circuit S 1, The overcurrent detector T2 is connected to the switch circuit S2. The overcurrent detectors T1 and T2 release the switch circuits S1 and S2 when a current of a preset magnitude flows. The overcurrent detectors T1 and T2 are set to operate at a current value slightly larger than 1/2 of the maximum current value that is assumed to flow when processing the injection needle. The number of switch circuits is not limited to two, and a larger number may be used. If n switch circuits are connected in parallel, set to operate at 1 / n of the assumed maximum current value.

 The switch releasing means 71 releases both the switch circuits S 1 and S 2 at the same time when one of the overcurrent detector T 1 and the overcurrent detector T 2 is activated.

In the main switch 6 of the present example, two switches having the mechanism shown in FIG. 27 are arranged in parallel. However, the switch cap 69, the intermediate lever 72, the detent bar 73, and the reset lever 74 are shared between the two switches S1 and S2. The bimetal bar 78 and the reset lever 74 described above correspond to the switch release means 71 here. In this example, since the main switch section is constituted by a plurality of switch circuits having small electric capacities as described above, the overall size of the main switch section is smaller than when the main switch section is constituted by one large switch. Even if the current concentrates on one of the switch circuits for some reason, the main switch 6 can be safely shut off. That is, it is small and highly reliable.

 Next, the operation of the entire injection needle fusing device when fusing the injection needle will be described.

 When the main switch 6 (see FIG. 1) is turned ON by the user, the sub-switch 6b (see FIG. 24) linked to the main switch 6 also turns ON. As a result, power supply to the magnet 60 is started, and the air-pump 13 starts operating. As a result, the suction and discharge of air from the suction target space (hereinafter referred to as “suction target space”) is started. The space to be suctioned is a space that communicates with the inside of the float guide assembly 11, the inside of the roller electrode assembly 12, and the inside of the dust box 51 (see FIG. 5). Since the joints between the above-described parts are in close contact with each other, odor does not spread throughout the casing (upper cover 2, middle cover 3, base frame 9) of the device from these joints. Therefore, the space to be aspirated is limited to only the portion where it is difficult to avoid the diffusion of the odor of the fusing swarf when fusing the injection needle, so that the odor can be efficiently deodorized. .

 When the main switch 6 is turned on, a voltage is also applied between the first roller electrode 18 and the second roller electrode 19, so that the injection needle 5 10 can be blown. ing.

In this state, as shown in FIG. 25, the user inserts the injection needle 5110 of the syringe 500 into the injection needle inlet 4a. Then, the user stakes the foot 4, that is, the upward biasing force of the compression spring 34, and pushes down the injector 500. Then, the limit switch 37 detects that the float 4 has been depressed, and outputs the detection result to the motor control circuit 81. The motor control circuit 81 operates the motor 15b accordingly to rotate the first roller electrode 18 and the second roller electrode 19 and sound the buzzer 90.

 In this way, by sounding the buzzer 90 at the same time that the float 4 is depressed, it is possible to inform the user that the float 4 has descended and the melting process of the syringe 500 is started, and to the user. You can encourage them to pay attention to their work.

 In addition, since the length of the injection needle 5 10 is shorter than the vertical movable distance of the float 4, the injection needle 5 10 is simply inserted into the injection needle 揷 inlet 4a, but the float 4 is pushed down. Before the injection, the tip of the injection needle 5 10 does not reach the roller electrode assembly 12.

Thereafter, when the syringe 500 is pushed down, the injection needle 5100 comes into contact with the outer peripheral surface of the second roller electrode 19. When further depressed, the needle tip comes into contact with the outer peripheral surface of the first roller electrode 18, and the injection needle 510 short-circuits between the first mouth electrode 18 and the second roller electrode 19. It will be in the state of having been made. That is, in Fig. 24, battery 10 (+ pole), one main switch 6—first roller electrode 18—injection needle 5 10—second roller electrode 19—battery 10 (—pole) The circuit is established. Then, when a current flows through the short-circuited circuit, the injection needle 5110 generates heat and melts. Even after the portion of the injection needle 5 10 that short-circuited the first roller electrode 18 and the second roller electrode 19 is melted, the user further pushes down the injection needle 5 10. As a result, the short circuit and the dissolution are repeated until the entire injection needle 510 is dissolved. During the above fusing operation, the air pump 13 sucks the air in the suction target space through the deodorizing filter 52 described above. The sucked air is Odor does not go out of the device because it is deodorized by the deodorizing filter 52. Since the suction by the air pump 13 is continued even after the end of the melting of the injection needle 5 10, the odor remaining in the dust box 51 or the like immediately after the end of the melting is surely removed.

 After a predetermined time (8 seconds in this example) elapses after the motor 15b is driven by the motor control circuit 81 and the buzzer 190 is sounded, the motor 15b is driven by the motor control circuit 81. Drive and buzzer 90 sounding are stopped. As described above, the operation time of the motor 15b is a time during which the fusing of the injection needle 510 can be completed with a margin. It can be seen that the fusing process of the needle 5 10 has been completed, and to notify this to the user, the buzzer 90 stops sounding at the same time as the motor 15 b stops. Thus, the user recognizes that the sounding of the buzzer 190 has been stopped, thereby recognizing that the fusing process of the injection needle 5 10 has been completed.

 Thereafter, when the user lifts the syringe 500 upward, the float 4 rises together with the syringe 500, and the float 4 returns to its original position. As a result, the main switch 6 is set to “OFF”, the sub switch 6 b is turned OFF in conjunction with the main switch 6, and the air pump 13 is also stopped.

 In the above example, the float guide assembly 11 may have a configuration as shown in FIG. The float guide door assembly 11 is configured to include a funnel 61, an insulating sheet 62, a shirt, and the like 63, in addition to the float guide 32, the float 4, and the compression spring 34 described above. .

Funnel 6 1 is installed at the center opening of the bottom plate 3 2a of the float guide 32 The angle of the inner funnel surface 6 1 a with respect to the horizontal plane is set to be larger than the inclination angle (with respect to the vertical) of the float guide assembly 1 1 1. Therefore, even when a drug solution or blood remaining in the syringe or the injection needle drops, the drug solution or the like is guided into the dust box 51.

 Below the funnel 6 1, a shirt 6 3 for separating the space in the float guide 3 2 from the roller electrode assembly 1 2 is attached from the lower surface side of the float guide 3 2. A hole 63a through which an injection needle is passed is formed substantially in the center, and an H-shaped slot 63b passing through the hole 63a is formed. Therefore, when pressed from above in FIG. 30 (b), both sides sandwiching the hole 63a open downward like a door as shown in FIG. 31. . After the force for pushing the shirt 63 is removed, the shirt 63 returns to its original state. The shirt 63 is preferably made of a heat-resistant and elastic thin plate material (for example, stainless steel for a panel). In this case, there is no problem even if the fusing chips of the injection needle blown off in the roller electrode assembly 12 scatter and hit the shirt 63.

 The outer periphery of the shirt member 63 is fixed with the insulating sheet 62 sandwiched between the shirt member 63 and the float guide 32. In this way, it is possible to prevent the current flowing to melt the injection needle in the roller electrode assembly 12 from flowing also to the float guide assembly 111.

In addition, a cap 64 is provided on a compression spring 34 provided in the float guide 32, and the float 4 is disposed on the cap 64. A plurality of grooves 4b are formed on the outer periphery of the float 4 to allow air to flow between the internal space of the float guide 32 and the outside. The cap 64 is for electrically shielding the space in the float guide 32 and has conductivity. In order to make this shielding more complete, its size is almost equal to that of float 4. As a result, the upper part of the reflow guide 32 is almost completely shielded. The electric shielding at the bottom and side surfaces of the space is provided by the float guide 32 itself and the shirt 63. The cap 64 and the float guide 32 are electrically connected via a compression spring 34.

 Thus, according to the float guide assembly 111, when the float 4 set in the syringe 500 is pushed down as shown in FIG. 30 (b), the float guide 3 The air in 2 is discharged from the groove 4 b on the outer periphery of the float 4, and the float 4 can be pushed down without resistance. Further, as the float 4 is depressed, the air in the float guide 32 flows toward the dust box 51, and the odorous air in the dust box 51 does not flow out.

 Also, when the syringe 500 is pushed down and the needle 5100 reaches the hole 63a of the shirt 63, the insertion angle of the needle 5100 is slightly swung, and the tip of the syringe 5100 is closed. Even in the case where it hits 63, the tip of the injection needle 5 10 is surely guided to the hole 6 3 a of the shutter 6 3 by bending a part of the shirt 6 3.

In addition, the injection needle 5 10 is entirely in a space that is electrically shielded, that is, the injection needle 5 10 has a cap 64, a float guide 32, an electrode plate 24, and an electrode. The entire body is surrounded by the bracket 21. In particular, the injection needle 5100 is always located below the cap 64, and the conductive compression spring 34, the support bracket 33 and the main They are electrically connected to each other via brackets 17 and the like. The cover 3 and the base frame 9 are also electrically connected and surrounded. Therefore, it is possible to minimize the emission of noise generated during the fusing process to the outside of the apparatus using the injection needle 510 as an antenna.

 In addition, when the float 4 rises after the fusing process, since the external air flows into the float guide 32 from the groove 4b, the dust box 51 and the roller electrode are raised as the float 4 rises. The odorous air in the assembly 12 does not flow back into the float guide 32. Further, by providing the shirt 63, the odor diffusion can be further reduced. In this modification, if the float 4 itself is made of a conductive material, the cap 64 is unnecessary. The compression springs 34 are generally made of stainless steel for paneling. However, if the compression springs 34 are made of a compression spring made of phosphor bronze having better conductivity, the emission of noise can be more effectively suppressed. Further, in the above example, the float guide assembly 11 may have a configuration as shown in FIG. This float assembly 211 includes a float 2667 composed of a float body 2668 and a syringe guide cap 69 in place of the float 4, and the syringe guide cap 26 is provided. By making 9 interchangeable, it is possible to support various types of syringes.

As shown in FIG. 33, a hole for mounting the syringe guide cap 269 is provided in the center of the float main body 268. This hole is composed of two steps: a shallow bottomed hole portion 268b on the outer peripheral side and a through hole portion 268a on the center side. The through hole portion 268a penetrates above and below the float main body 268, and has an internal wall formed with a female screw 268d. The bottomed hole portion 268b has a hemispherical concave portion 268c formed on the bottom surface. The position of the hemispherical concave portion 268c is concentric with the female screw 268d, and at a predetermined angle with the female screw 268d. Position. Further, at least one protrusion 2688 e is formed at a lower portion (P portion in FIG. 32) of the inner peripheral surface of the side wall of the float main body 268 as shown in FIG. The protrusion 268 e has a triangular lower end and is sharp.

 The syringe guide cap 269 is used to stably hold a syringe or an injection needle, and is used by being attached to the float body 268. At the center of the syringe guide cap 269, a vertically penetrated hole for inserting an injection needle is formed. The upper opening portion of this hole is the injection needle inlet 269a. Further, on the upper surface of the syringe guide cap 269, as shown in FIG. 35, a groove 269b is formed so as to cross the injection needle inlet 269a.

 On the lower surface of the flange portion 269c, a hemispherical convex portion 269d having a predetermined angular relationship with the male screw 269e and engaging with the hemispherical four portion 268c is formed. As shown in FIG. 36, on the lower side of the flange portion 269c and on the inner peripheral side of the hemispherical convex portion 269d, a male screw engaging with a female screw 268d is provided. The screw 269e is formed with a predetermined thickness.

The float plate 32 to which the float 267 is attached has a stop plate 270 fixed to the bottom plate 32a. As shown in FIG. 37, the stop plate 270 has at least one protrusion 270a that is triangular and pointed upward. The protrusion 270a is located on the same concentric circle as the protrusion 268e of the float body 268. In the float assembly 211 having such a configuration, the protrusion 270a is attached to the float body 268. Insert a coin, etc. into the groove 26 9 b of the syringe guide cap 26 9, and push the float 26 7 down to the lowest point as it is, and rotate the coin etc. in the direction in which the syringe guide cap 2 69 becomes loose. Let's go, Syringa Remove the cap 269 and then screw a new syringe guide cap 269 onto the float body 268.

 Thus, by replacing the syringe guide cap 269, it is possible to cope with various types of syringes.

 As described above, according to the present invention, the space where the odor is diffused in the device is reduced, whereby the odor can be prevented from being diffused when the injection needle is blown, and more effective deodorization can be achieved.

 In addition, it is possible to prevent the device from operating without the dust box attached, which is safe. The present invention does not increase the electric loss and minimizes the cost. Also, by distributing the current flowing through the switch, the size of the re-energized switch can be reduced. Even if current concentrates on one of the switch circuits for some reason, the main switch can be safely shut off. That is, a small and highly reliable device can be provided.

 The influence of the air flow generated by the insertion operation of the injection needle can be reduced, and the diffusion of the odor at the time of the injection needle fusing process can be reduced. If a shirt is provided, odor diffusion can be further reduced without hindering insertion of the injection needle.

 In addition, leakage of electric noise generated during fusing to the outside of the device can be reduced. In addition, it can support various types of injection needles.

Also, since the user can recognize the start of descent of the float, that is, the start of the fusing process, the end of the fusing process, and the sounding of the buzzer, the user's attention during the work can be recognized. And a quick work without play can be realized. Industrial applicability -

41 As described above, the injection needle fusing device according to the present invention can be suitably used when treating a used injection needle.

Claims

The scope of the claims

1. In the injection needle fusing device that cuts the injection needle and stores it in the dust box,

 A fusing chamber component forming a fusing chamber;

 A pair of electrically conductive fusing members disposed in the fusing chamber, a rotating mechanism for rotating the fusing member, and a power application mechanism for applying power between the fusing members; Fusing means for fusing the injection needle in contact with the pair of fusing members;

 A power supply for supplying power to the power application mechanism;

 A power switch for turning on / off power supply from the power supply to the power application mechanism;

 A guide member and an enclosing member which form an introduction chamber and have a cylindrical shape with a bottom are provided, and the guide member is inserted into the enclosing member from the opening side thereof and is provided movably along the enclosing member. The surrounding member is air-tightly connected to the fusing chamber constituent member such that an inlet formed at the bottom thereof communicates with the fusing chamber, and the guide member holds the syringe on the upper surface. A hole is provided, the syringe is held in the holding hole in a state where the injection needle is inserted into the introduction chamber from the holding hole, and the syringe needle is moved downward along the enclosing member to move the injection needle into the housing member. Guide means configured to be guided into the processing chamber through the inlet;

 Descent detecting means for detecting the start of descent of the guide member,

 An informing means for informing when the descent detecting means detects the descent of the guide member,

The dust box is connected to the fusing chamber so that the space inside the dust box is in a mounted state in which the dust box is air-tightly connected to the fusing chamber. 2005/023165

 43. An injection needle fusing device, comprising: a dust box housing portion that holds a material in close contact with a lower portion of the material; and a suction device that sucks air from the dust box through the filter.

2. The injection needle fusing device according to claim 1, wherein the notification means is configured to stop the notification after the end of the fusing process.

3. The dust box housing is

 A loading section into which the dust box is loaded,

 The dust box loaded into the loading section is brought into close contact with the fusing chamber constituent member so as to be in the mounting state, and when the dust box is removed, the dust pox is separated from the fusing chamber constituent member. 3. The injection needle fusing device according to claim 1, further comprising a contact / separation mechanism for causing the injection needle to be disconnected.

 4. An exchange mechanism for transitioning the state of the loading unit between a first state in which loading and unloading of the dust box is easy, and a second state different from the first state,

 The close contact / separation mechanism causes the dust box to come into close contact with the fusing chamber constituent member in accordance with the transition from the first state to the second state, and causes the dust box to move from the second state to the first state. The dust box is separated from the fusing chamber constituent members along with the transition.

3. The injection needle fusing device according to item 3.

 5. The suction unit according to claim 1, wherein the suction unit starts suction before the fusing process is started, and stops suction after the fusing process is completed. An injection needle fusing device according to any of the preceding claims.

6. The guide member, the surrounding member, and / or an opening for connecting the introduction chamber and the outside world between the guide member and the surrounding member of the guide means. 2005/023165

 44. The injection needle fusing device according to any one of claims 1 to 5, wherein the injection needle fusing device is formed.

 7. The container further comprises a shutter that closes a communication part between the introduction port of the surrounding member and the fusing chamber and opens the communication part when pushed from the introduction chamber side. 7. The injection needle fusing device according to any one of items 1 to 6.

 8. The injection needle fusing device according to any one of claims 1 to 7, wherein a part or all of the guide member is made of a material having conductivity.

9. Dust box detection means for detecting whether or not the dust box is held in the dust box storage section;

 When the dust box detection unit detects that the dust box is not held in the dust box storage unit, a release unit that keeps the power switch off is provided. Item 9. The injection needle fusing device according to any one of Items 1 to 8.

 10. A plurality of switches that turn on and off in conjunction with each other are connected in parallel with each other, and are connected to a circuit that supplies power from the power supply to the power application mechanism. The injection needle fusing device according to any one of claims 1 to 9, further comprising an energizing switch for turning on and off the power supply to the injection needle.

11. The plurality of switches have the same current capacity, monitor the energization state of each of the switches, and assume that the current that flows through the switches is assumed by the injection needle fusing device. Claims further comprising overcurrent prevention means for turning off all the switches when detecting a state exceeding a maximum current of 1 n ( _n is the number of switches). Item 10. The injection needle fusing device according to Item 10.

12. A holding member for holding the injection needle, the holding member being detachably mounted in a holding hole of the inner member, wherein the holding member is detachably mounted. Item 7. An injection needle fusing device according to any one of the above items.