Portable dental treatment unit

Abstract

To provide a portable dental treatment unit.SOLUTION: The portable dental treatment unit includes a housing and a dental treatment instrument provided in the housing. A first arm of which one end side is supported to be rotatable in the vertical direction around a first rotation shaft provided in the housing, a second arm of which one end side is supported to be rotatable in the vertical direction around a second rotation shaft provided below the first rotation shaft of the housing, and a support member which is supported to be rotatable in the vertical direction around a third rotation shaft provided on the other end side of the first arm and is supported to be rotatable in the vertical direction around a fourth rotation shaft provided on the other end side of the second arm; And a holder provided on the support member and capable of detachably holding the dental treatment instrument. The first arm and the second arm are interlocked so as to rotate in the up-down direction around the first rotation shaft and the second rotation shaft, so that the support member rotates between the upper holding position and the lower storage position.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a portable dental treatment unit used for home dental treatment. [Background technology]

[0002] Conventionally, various types of portable dental treatment units have been used for home dental treatment. In particular, dental treatment units that house dental treatment instruments in a housing to protect the dental treatment instruments during transportation are common.

[0003] In the dental treatment unit for house call use disclosed in Patent Document 1, the upper cover member (lid body) is removed after the unit arrives at the visit site. Then, for example, if the dentist wishes to hold the instruments (dental treatment equipment) at a higher position, the support rod for supporting the instrument holder (holder) is reattached to the upper unit (housing) (see FIG. 3 of Patent Document 1).

[0004] In the dental treatment device for house calls of Patent Document 2, after arriving at the visit destination, the cover is opened upward via a hinge member. Then, for example, when the dental treatment instrument (dental treatment instrument) is to be held at a higher position according to the dentist's wish, the hanger (holder) is reattached to the cover that has been opened upward and is at a higher position (see Figures 3 and 4 of Patent Document 2). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 4997539 [Patent Document 2] Patent No. 5785901 Summary of the Invention [Problem to be solved by the invention]

[0006] The inventors of the present invention have found that many dentists always hold dental instruments at a higher position when visiting a dentist, and it is troublesome for such dentists to have to reattach the instrument holder (holder) or hanger (holder) after arriving at the patient's clinic.

[0007] On the other hand, in the configuration of Patent Document 2, it is possible to consider pre-installing a fixed hanger (holder) on the back side of the lid, which opens upward and is positioned high, but in that case the lid itself becomes heavy, making opening and closing the lid a heavy task and causing inconvenience to the user.

[0008] The inventors of the present invention thought that by separating the opening of the lid and the up and down movement of the holder, it would be possible to effectively prevent excessive loads on each. In other words, rather than fixing the holder to the lid, it would be effective to provide a rotating mechanism separate from the lid to move the holder up and down.

[0009] If a rotation mechanism using a single arm is used as a rotation mechanism separate from the lid, the holder will be upside down when in the upper position and when in the lower position. However, if the holder's orientation does not become upside down when in the upper position and when in the lower position, it will be possible to selectively use the upper position or the lower position depending on the situation at the visit. Furthermore, although not essential to the effect of the present invention at least at the time of filing this application, it will also be easy to move the holder to the lower position after treatment and store it in the housing with the dental instruments still attached.

[0010] The present invention was devised based on the above findings, and an object of the present invention is to provide a portable dental treatment unit that has a rotation mechanism separate from the lid to move the holder up and down, and in which the holder does not become upside down when in the upper position or the lower position. [Means for solving the problem]

[0011] The present invention provides a portable dental treatment unit comprising a portable housing and dental treatment instruments provided within the housing, the portable dental treatment unit comprising: a first arm supported at one end thereof so as to be rotatable in the vertical direction around a first rotation axis provided on the housing; a second arm supported at one end thereof so as to be rotatable in the vertical direction around a second rotation axis provided on the housing below the first rotation axis; a support member supported at the other end of the first arm so as to be rotatable in the vertical direction around a third rotation axis provided on the other end of the first arm and so as to be rotatable in the vertical direction around a fourth rotation axis provided on the other end of the second arm; and a support member provided on the support member for supporting the dental treatment instruments. and a holder capable of removably holding dental treatment instruments, wherein a portion of the housing is configured as a lid that can be opened and closed, and when the lid is open, the first arm and the second arm are linked to rotate vertically around the first rotation axis and the second rotation axis, thereby allowing the support member to rotate between an upper holding position and a lower storage position, and when the support member is in the lower storage position, the first arm, the second arm and the support member are accommodated within the housing when the lid is closed.

[0012] According to the present invention, the housing, the first arm, the second arm, and the support member form a quadrilateral link in side view, so that when the first arm and the second arm are linked to rotate in the vertical direction, the posture (tilt) of the support member in side view may change slightly, but it will not become upside down.

[0013] Therefore, according to the present invention, the holder can be selectively held in either the upper position (upper holding position) or the lower position (lower storage position) depending on the situation at the place visited. Furthermore, although not essential to the effect of the present invention at least at the time of filing this application, it becomes easy to move the holder to the lower position and store it in the housing after treatment with the dental treatment instruments still attached to the holder.

[0014] The upper holding position may be the upper limit position of the quadrilateral link, but is not limited to this and may be set near the upper limit position, for example. Similarly, the lower storage position may be the lower limit position of the quadrilateral link, but is not limited to this and may be set near the lower limit position, for example.

[0015] In the present invention, the holder may be detachable from the support member, but it is preferable that the holder is attached to the support member when the support member is in the lower storage position, and in that state, the holder also fits within the housing when the lid is closed.

[0016] Furthermore, in this case, it is preferable that when the support member is in the lower storage position, the dental treatment instrument is held in the holder, and in this state, the dental treatment instrument is also accommodated within the housing when the lid is closed.

[0017] This feature makes it easy to store dental instruments in the housing by moving the holder to a lower position after use, with the dental instruments still attached to the holder. In particular, the present invention minimizes the change in the orientation (tilt) of the support member and the holder in side view, making it less likely that the piping and / or wiring extending from the dental instruments held in the holder will be subjected to excessive deformation when the holder is moved. This significantly reduces the risk of dental instruments accidentally falling off the holder or of the piping and / or wiring being damaged.

[0018] In the present invention, it is preferable to further include a locking device that restricts rotation of the first arm and / or the second arm when the support member is in the upper holding position, thereby providing sufficient holding force for the holder (support member) against forces applied when attaching or detaching dental instruments to or from the holder.

[0019] In this case, it is preferable that the locking device restricts the rotation of the first arm and the second arm by restricting movement between the first arm and the second arm relative to each other when the support member is in the upper holding position.

[0020] As described above, according to the configuration of the present invention, the housing, the first arm, the second arm, and the support member form a quadrilateral link in side view, so that when the movement of the first arm and the second arm relative to each other is restricted, their overall movement is locked. By utilizing this, it is possible to provide, with a simpler configuration, a holding force of the holder (support member) sufficient to withstand the force applied when attaching or detaching a dental treatment instrument to or from the holder.

[0021] In this case, the locking device preferably includes a latch mechanism that utilizes a manually releasable spring force to restrict movement between the first arm and the second arm relative to each other.

[0022] In this case, even with a very simple configuration, the movement between the first arm and the second arm relative to each other is reliably restricted, and a sufficient holding force for the holder (support member) can be reliably provided.

[0023] Alternatively, the locking device preferably includes a magnet that uses magnetic force to restrict movement between the first arm and the second arm relative to one another.

[0024] In this case as well, even with an extremely simple configuration, the movement between the first arm and the second arm relative to each other is reliably restricted, and a sufficient holding force for the holder (support member) can be reliably provided.

[0025] Furthermore, in the present invention, it is preferable that the length from the first rotation axis to the third rotation axis is equal to the length from the second rotation axis to the fourth rotation axis, and that the length from the first rotation axis to the second rotation axis is equal to the length from the third rotation axis to the fourth rotation axis.

[0026] In this case, the housing, the first arm, the second arm, and the support member form a parallelogram link in side view. Therefore, when the first arm and the second arm are linked to rotate up and down, the posture (tilt) of the support member in side view does not change at all. For example, if the first rotation axis and the second rotation axis are aligned in a vertical plane, the plane including the third rotation axis and the fourth rotation axis is also a vertical plane, and the support member (holder) can be maintained in a vertical plane (or at a desired angular posture relative to the vertical plane).

[0027] In the present invention, the type of lid is not limited. For example, the lid may be connected to the housing so as to be rotatable in the vertical direction, or may be connected to the housing so as to be rotatable in the horizontal direction. Alternatively, the lid may be provided so as to be detachable from the housing. [Effects of the Invention]

[0028] According to the present invention, the housing, the first arm, the second arm, and the support member form a quadrilateral link in side view, so that when the first arm and the second arm are linked to rotate in the vertical direction, the posture (tilt) of the support member in side view may change slightly, but it will not become upside down.

[0029] Therefore, according to the present invention, the holder can be selectively held in either the upper or lower position depending on the situation at the place of visit. Furthermore, although not essential to the effect of the present invention at least at the time of filing this application, it becomes easy to move the holder to the lower position after treatment and store the dental instruments in the housing while they are still attached to the holder. [Brief explanation of the drawings]

[0030] [Figure 1] 1A is a side view, FIG. 1B is a front view, and FIG. 1C is a plan view of a portable dental treatment unit according to an embodiment of the present invention. [Figure 2]2A, 2B, and 2C are external views showing the main components of the portable dental treatment unit according to this embodiment with the cover open, respectively. [Figure 3] 3A, 3B, and 3C are external views showing the main components of the portable dental treatment unit according to this embodiment with the holder rotated to the upper position, respectively. [Figure 4] 1 is a schematic diagram showing the position of a latch mechanism of a portable dental treatment unit according to this embodiment. FIG. [Figure 5] 5A and 5B are detailed views of the latch mechanism shown in Fig. 4. Fig. 5A is a side view, Fig. 5B is a front view, Fig. 5C is a plan view, and Figs. 5D to 5F are plan views showing the latch mechanism reaching a restrained state. [Figure 6] 10 is a schematic diagram showing the positions of the arm stopper and magnet in the portable dental treatment unit according to this embodiment when the holder is in the lower position. FIG. [Figure 7] 10 is a schematic diagram showing the positions of the arm stopper and magnet in the portable dental treatment unit according to this embodiment when the holder is rotated to the upper position. FIG. [Figure 8] 8(a) is a side view, FIG. 8(b) is a front view, and FIG. 8(c) is a plan view showing the main components of the portable dental treatment unit according to this embodiment, with the holder with dental treatment instruments attached in the lower position. [Figure 9] 9(a) is a side view, FIG. 9(b) is a front view, and FIG. 9(c) is a plan view showing the main components of the portable dental treatment unit according to this embodiment, with the holder with dental treatment instruments attached in the upper position. DETAILED DESCRIPTION OF THE INVENTION

[0031] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0032] (Overall composition) FIG. 1 is an external view of a portable dental treatment unit 1 according to one embodiment of the present invention, with FIG. 1(a) being a side view, FIG. 1(b) being a front view, and FIG. 1(c) being a plan view.

[0033] 1(a) to 1(c), the portable dental treatment unit 1 of this embodiment includes a portable housing. The housing has a cover 2 and a housing main body 3.

[0034] A handle 4 is provided on the top surface of the housing body 3. The handle 4 is of a type that can be tilted sideways. Meanwhile, 3 x 3 = 9 legs 5 are arranged on the bottom surface of the housing body 3. Furthermore, gripping parts 6 and locking buckles 7 for locking the lid 2 open are provided on both side surfaces of the housing body 3.

[0035] As an example of size, the length from side to side at the front is approximately 43 cm, the height when the handle 4 is folded down is approximately 33 cm, the protruding height of the handle 4 when it is upright is approximately 4.5 cm, and the length from front to back is approximately 30 cm.

[0036] Next, Fig. 2 is an external view showing the main components of the portable dental treatment unit 1 of this embodiment with the lid 2 open, with Fig. 2(a) being a side view, Fig. 2(b) being a front view, and Fig. 2(c) being a plan view. Furthermore, Fig. 3 is an external view showing the main components of the portable dental treatment unit 1 of this embodiment with the holder 14 rotated to the upper position, with Fig. 3(a) being a side view, Fig. 3(b) being a front view, and Fig. 3(c) being a plan view.

[0037] 2(a) to 2(c), the portable dental treatment unit 1 of this embodiment has a portable housing, part of which is the lid 2. The lid 2 is configured to be able to open upward relative to the housing main body 3 via, for example, a hinge mechanism.

[0038] 2(b), a pair of support blocks 31, 32 are fixed to the inner region of the housing main body 3. A first shaft 41 extends between the pair of support blocks 31, 32 at an upper position, and a second shaft 42 extends between the pair of support blocks 31, 32 at a lower position.

[0039] One end of the first arm 11 is supported on the first shaft 41 so that it can rotate up and down around the axis of the first shaft 41 (which in this example extends horizontally) as the first rotation axis (in this example, one end of the first arm 11 is penetrated by a local small diameter portion of the first shaft 41. The penetrated portion on the one end of the first arm 11 is sandwiched (restricted) in the left-right direction by the large diameter portion of the first shaft 41 and a sleeve (separate member)).

[0040] In a substantially similar manner, one end of the second arm 12 is supported on the second shaft 42 so as to rotate vertically around the axis of the second shaft 42 (which in this example extends horizontally) as the second rotation axis (in this example, one end of the second arm 12 is penetrated by a local small diameter portion of the second shaft 42. The penetration portion on the one end of the second arm 12 is also sandwiched (restricted) in the left-right direction by the large diameter portion of the second shaft 42 and a sleeve (separate component)).

[0041] On the other hand, the other end of first arm 11 is penetrated by third shaft 43, and the axis of third shaft 43 (which in this example extends horizontally) serves as a third rotation axis, and first arm 11 is adapted to rotate in the vertical direction around the third rotation axis (preferably with a built-in bearing). In this manner, the other end of first arm 11 supports third shaft 43.

[0042] Similarly, the other end of second arm 12 is penetrated by a fourth shaft 44, and the axis of fourth shaft 44 (which in this example extends horizontally) serves as a fourth rotation axis, and second arm 12 is adapted to rotate in the vertical direction around the fourth rotation axis (preferably with a built-in bearing). In this manner, the other end of second arm 12 supports fourth shaft 44.

[0043] The third shaft 43 and the fourth shaft 44 are fixed to the support member 13. As a result, the support member 13 is supported on the other end side of the first arm 11 so as to be rotatable in the vertical direction around the third rotation shaft, and is supported on the other end side of the second arm 12 so as to be rotatable in the vertical direction around the fourth rotation shaft.

[0044] Furthermore, in the portable dental treatment unit 1 of this embodiment, the length from the first rotation axis to the third rotation axis is equal to the length from the second rotation axis to the fourth rotation axis, and the length from the first rotation axis to the second rotation axis is equal to the length from the third rotation axis to the fourth rotation axis.

[0045] As shown in particular in Figure 2(a), when the cover body 2 is open, the first arm 11 and the second arm 12 are linked to rotate vertically around the first rotation axis and the second rotation axis, so that the support member 13 rotates between an upper holding position (dashed line position) and a lower storage position (solid line position).

[0046] Furthermore, a holder 14 is fixed to the upper end of the support member 13 (it may be removable) and is capable of removably holding dental treatment instruments 81 to 84 (see FIGS. 8 and 9).

[0047] As shown in particular in Figure 2(a), when the support member 13 is in the lower storage position (solid line position), the first arm 11, the second arm 12, the support member 13 and the holder 14 are accommodated within the housing when the lid body 2 is closed.

[0048] As an example of size, the height of the upper edge of the lid 2 when open is approximately 62 cm, and the height of the upper edge of the holder 14 when the support member 13 is in the upper holding position (position indicated by the two-dot chain line) is approximately 61 cm. Each of the first arm 11 and the second arm 12 is, for example, a hollow, angular arm made of aluminum, with a length of 22 cm and a side length of approximately 10 mm (see Figures 5(c) to 5(f) described below).

[0049] (latch mechanism) The portable dental treatment unit 1 of this embodiment is equipped with a latch mechanism 50 as a locking device that can restrict movement between the first arm 11 and the second arm 12 relative to each other when the support member 13 is in the upper holding position.

[0050] Fig. 4 is a schematic diagram showing the position of the latch mechanism 50 of the portable dental treatment unit 1 of this embodiment. Fig. 5 is a detailed view of the latch mechanism 50 shown in Fig. 4, with Fig. 5(a) being a side view, Fig. 5(b) being a front view, and Fig. 5(c) being a plan view. Figs. 5(d) to 5(f) are plan views showing the latch mechanism 50 reaching a restrained state.

[0051] As shown in FIG. 5, the latch mechanism 50 of this embodiment utilizes a manually releasable spring force to restrict movement between the first arm 11 and the second arm 12 relative to each other.

[0052] Specifically, latch main body 53 is provided rotatably with respect to base 51 fixed to second arm 12 via pivot pin 52. Pivot pin 52 extends in a direction parallel to second arm 12, and is disposed at a position offset to the left of second arm 12 (the lower side in FIG. 5(c)) and to the first arm side (the left side in FIG. 5(c)).

[0053] The latch main body 53 is further connected to the second arm 12 by a coil spring 54 on the second arm 12 side of the pivot pin 52. The coil spring 54 applies a repulsive force to the area of ​​the latch main body 53 on the second arm 12 side of the pivot pin 52, thereby biasing the area of ​​the latch main body 53 on the first arm 11 side of the pivot pin 52 toward the first arm 11.

[0054] A locking claw 55 is provided in the latter region, and this locking claw 55 is adapted to lock onto a locked member 56 fixed to first arm 11. That is, when first arm 11 and second arm 12 rotate in conjunction with each other to reach the upper position and first arm 11 and second arm 12 approach each other, the force of the rotation operation causes locking claw 55 to overcome the biasing force of coil spring 54 and climb over locked member 56 to enter a locked state (see Figures 5(d) to 5(f)), and thereafter, first arm 11 and second arm 12 are reliably prevented from separating from each other.

[0055] To release the restrained state, the latch body 53 is manually rotated around the pivot pin 52 in a direction counter to the biasing force of the coil spring 54, whereby the engagement between the locking claw 55 and the locked member 56 is released extremely easily (FIGS. 5(d) to 5(f) are followed in reverse order).

[0056] (Arm stopper and magnet) Fig. 6 is a schematic diagram showing the positions of the arm stoppers 61, 62 and the magnet 63 in the portable dental treatment unit 1 of this embodiment when the holder 14 is in the lower position. Furthermore, Fig. 7 is a schematic diagram showing the positions of the arm stoppers 61, 62 and the magnet 63 in the portable dental treatment unit 1 of this embodiment when the holder 14 is rotated to the upper position.

[0057] 6 and 7, in the portable dental treatment unit 1 of this embodiment, arm stoppers 61, 62 that define (limit) the contact area between the first arm 11 and the second arm 12 in the lower storage position and the upper holding position are provided on the side of the second arm 12 with an appropriate gap between them. The arm stoppers 61, 62 are made of iron, and magnetic force acts between them and a magnet 63, which will be described later.

[0058] Magnet 63 is provided on the side of first arm 11 so as to face arm stopper 61 in the lower storage position (see FIG. 6) and so as to face arm stopper 62 in the upper holding position (see FIG. 7) (the two arm stoppers 61, 62 are provided at such a distance). This effectively prevents the arms 11, 12 from "wobbling" in the lower storage position due to the magnetic force acting between magnet 63 and each arm stopper 61, 62, and also effectively prevents the arms 11, 12 from suddenly dropping when latch mechanism 50 is released in the upper holding position.

[0059] (Installation of dental instruments) Fig. 8 is an external view showing the main components of the portable dental treatment unit 1 of this embodiment when the holder 14 to which dental treatment instruments 81 to 84 are attached is in the lower position. Fig. 8(a) is a side view, Fig. 8(b) is a front view, and Fig. 8(c) is a plan view.

[0060] 9A and 9B are external views showing the main components of the portable dental treatment unit 1 of this embodiment when the holder 14 to which the dental treatment instruments 81 to 84 are attached is in the upper position. Fig. 9(a) is a side view, Fig. 9(b) is a front view, and Fig. 9(c) is a plan view.

[0061] Various known dental treatment instruments can be used as the dental treatment instruments 81 to 84. For example, a micro-engine, a 3-way syringe, a scaler, a vacuum, etc.

[0062] In this embodiment, as shown in FIG. 9, when the support member 13 is in the lower storage position, the dental treatment instruments 81 to 84 are held by the holder 14, and in this state, the dental treatment instruments 81 to 84 are also accommodated within the housing when the lid 2 is closed.

[0063] (Action and effect) According to the portable dental treatment unit 1 of this embodiment as described above, the housing main body 3 (part of the housing), the first arm 11, the second arm 12, and the support member 13 form a parallelogram link in side view. Therefore, when the first arm 11 and the second arm 12 are linked to rotate up and down, the posture (inclination) of the support member 13 in side view does not change at all, and it does not become upside down.

[0064] Therefore, according to the portable dental treatment unit 1 of this embodiment, the holding position of the holder 14 can be selectively used between the upper position (upper holding position) and the lower position (lower storage position) depending on the situation of the place being visited.

[0065] Furthermore, according to the portable dental treatment unit 1 of this embodiment, after treatment, the dental treatment instruments 81 to 84 can be left attached to the holder 14, and the holder 14 can be moved to a lower position and stored in the housing, and can be taken home as is.

[0066] In particular, with the portable dental treatment unit 1 of this embodiment, the posture (inclination) of the support member 13 and the holder 14 in a side view does not change, so the piping and / or wiring extending from the dental treatment instruments 81-84 held in the holder 14 is unlikely to be forced to undergo excessive deformation when the holder 14 moves. This can significantly reduce the risk that the dental treatment instruments 81-84 will undesirably fall off the holder 14 or that the piping and / or wiring will be damaged.

[0067] Furthermore, according to the portable dental treatment unit 1 of this embodiment, the opening and closing (rotating) operation of the lid body 2 and the up and down movement (rotating) operation of the holder 14 are separate operations, so the operational burden is not excessive.

[0068] Furthermore, according to the portable dental treatment unit 1 of this embodiment, when the support member 13 is in the upper holding position, the latch mechanism 50 (an example of a locking device) can restrict the movement of the first arm 11 and the second arm 12 relative to each other. As described above, according to the configuration of this embodiment, the housing main body 3, the first arm 11, the second arm 12, and the support member 13 form a parallelogram link in side view, and therefore, by restricting the movement of the first arm 11 and the second arm 12 relative to each other, their overall movement is locked, and a holding force of the holder 14 (support member 13) sufficient to withstand forces applied when attaching or detaching the dental treatment instruments 81-84 to or from the holder 14 can be provided.

[0069] In particular, according to the portable dental treatment unit 1 of this embodiment, the latch mechanism 50 utilizes a manually releasable spring force to restrict movement between the first arm 11 and the second arm 12 relative to each other, so that despite the extremely simple configuration, movement between the first arm 11 and the second arm 12 relative to each other is reliably restricted.

[0070] Furthermore, according to the portable dental treatment unit 1 of this embodiment, arm stoppers 61, 62 and a magnet 63 are provided, which effectively suppress the "wobbling" of each arm 11, 12 in the lower storage position, and also effectively suppress the sudden drop of each arm 11, 12 when the latch mechanism 50 is released in the upper holding position.

[0071] (Variation (1)) In the portable dental treatment unit 1 of the above-described embodiment, the length from the first rotation axis to the third rotation axis is equal to the length from the second rotation axis to the fourth rotation axis, and the length from the first rotation axis to the second rotation axis is equal to the length from the third rotation axis to the fourth rotation axis. However, at least at the time of filing this application, the present invention is not limited to this aspect. In other words, aspects in which the former length and the latter length are different from each other are also within the scope of the present invention.

[0072] Even in this modified example, the housing main body 3 (part of the housing), first arm 11, second arm 12, and support member 13 form a quadrilateral link in side view, and it is possible to obtain substantially the same effects as in the above-described embodiment. Because it is not a parallelogram ring, when the first arm 11 and second arm 12 are linked to rotate up and down, the posture (inclination) of support member 13 in side view changes slightly, but it does not become upside down.

[0073] (Variation (2)) The locking device that restricts the rotation of the first arm 11 and the second arm 12 when the support member 13 is in the upper holding position is not limited to the type that restricts the movement of the first arm 11 and the second arm 12 relative to each other, such as the latch mechanism 50 described above.

[0074] For example, a retractable protrusion may be provided on the surface of the support block 31 that can abut and support the underside of the first arm 11 and / or the second arm 12 when in the upper holding position, and the retractable protrusion may be appropriately set in a protruding state (projecting state) to restrict the rotation of the first arm 11 and the second arm 12.

[0075] (Variation (3)) The present invention is not limited to a specific type of lid 2. In the portable dental treatment unit 1 of the above-described embodiment, the lid 2 is connected to the housing body 3 so as to be rotatable in the vertical direction, but this is not limiting, and the lid 2 may be connected to the housing body 3 so as to be rotatable in the horizontal direction. Furthermore, the lid 2 may be provided so as to be removable (separable) from the housing body 3. [Explanation of symbols]

[0076] 1 Portable Dental Treatment Unit 2 Lid 3. Main body of the housing 4 Handle 5 Legs 6 Gripping part 7 Locking Buckle 11 First Arm 12 Second Arm 13 Support member 14 Holder 31 Support block 32 Support Block 41 First Shaft 42 Second Shaft 43 Third Shaft 44 4th Shaft 50 Latch mechanism 51 Base 52 Pivot pin 53 Latch body 54 Coil spring 55 Locking claw 56 Locked member 61 Arm stopper 62 Arm stopper 63 Magnet 81 Dental instruments 82 Dental instruments 83 Dental instruments 84 Dental instruments

Claims

1. A portable housing and a dental treatment instrument provided in the housing; A portable dental treatment unit comprising: a first arm having one end supported so as to be rotatable in the vertical direction around a first rotation shaft provided on the housing; a second arm having one end supported so as to be rotatable in the vertical direction around a second rotation shaft provided on the housing below the first rotation shaft; a support member supported to be rotatable in the vertical direction around a third rotation shaft provided on the other end side of the first arm and supported to be rotatable in the vertical direction around a fourth rotation shaft provided on the other end side of the second arm; a holder provided on the support member and capable of removably holding the dental treatment instrument; Further provided with a part of the housing is configured as a lid that can be opened and closed, When the cover is opened, the first arm and the second arm are linked to rotate vertically around the first rotation shaft and the second rotation shaft, thereby causing the support member to rotate between an upper holding position and a lower storage position, When the support member is in the lower storage position, the first arm, the second arm, and the support member are accommodated within the housing with the cover closed. A portable dental treatment unit.

2. When the support member is in the lower storage position, the holder is also accommodated within the housing with the lid closed.

2. The portable dental treatment unit according to claim 1.

3. The dental treatment instrument can be held by the holder even when the support member is in the lower storage position, and in this state, the dental treatment instrument is also accommodated within the housing when the lid is closed.

3. The portable dental treatment unit according to claim 2.

4. a locking device that restricts the rotation of the first arm and / or the second arm when the support member is in the upper holding position; 10. The portable dental treatment unit of claim 1, further comprising:

5. The locking device is configured to restrict the rotation of the first arm and the second arm by restricting the movement of the first arm and the second arm relative to each other when the support member is in the upper holding position.

5. A portable dental treatment unit according to claim 4.

6. The locking device includes a latch mechanism that utilizes a manually releasable spring force to restrict movement between the first arm and the second arm relative to one another.

6. A portable dental treatment unit according to claim 5.

7. The locking device includes a magnet that uses magnetic force to restrict movement between the first arm and the second arm relative to one another.

6. A portable dental treatment unit according to claim 5.

8. a length from the first rotation axis to the third rotation axis and a length from the second rotation axis to the fourth rotation axis are equal to each other, The length from the first rotation axis to the second rotation axis is equal to the length from the third rotation axis to the fourth rotation axis.

8. A portable dental treatment unit according to any one of claims 1 to 7.

9. The cover is connected to the housing so as to be rotatable in the vertical direction.

8. A portable dental treatment unit according to any one of claims 1 to 7.

10. The cover is connected to the housing so as to be rotatable in the left-right direction.

8. A portable dental treatment unit according to any one of claims 1 to 7.

11. The cover is provided so as to be removable from the housing.

8. A portable dental treatment unit according to any one of claims 1 to 7.

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