Waterproof packing and operation panel

Abstract

A waterproof packing (3) has a frame shape, wherein a side extending in the height direction in the frame shape is divided into a plurality of divided pieces (31) by a dividing portion. In the waterproof packing (3), among joint regions that are divided surfaces of two divided pieces (31), the divided surfaces being along the depth direction of the waterproof packing (3) and facing each other in the height direction, the joint region of the divided piece (31) positioned on the lower side in the height direction comprises: a connection region in which the height of the joint region switches in the height direction; an outer joint region that is an outer region of the frame shape bounded by the connection region; and an inner joint region that is an inner region of the frame shape bounded by the connection region. The position of the connection region in the height direction is higher than the position of an outer joint side, which is the outer end portion of the waterproof packing (3) in the outer joint region, or the position of an inner joint side, which is the inner end portion of the waterproof packing (3) in the inner joint region in the height direction, is higher than the position of the outer joint side.

Description

Waterproof packing and operation panel

[0001] The present disclosure relates to a waterproof packing that prevents the intrusion of liquid and an operation panel.

[0002] Conventionally, in order to realize an airtight or waterproof structure of equipment, multiple parts may be assembled using seals. Patent Document 1 describes a joining structure of seal members that realizes an airtight structure for a casing of a ventilation device. The joining structure of seal members described in Patent Document 1 is used in a state in which two or more prismatic seal members are joined together, and the joining portion of one seal member has a concave structure, and the joining portion of the other seal member has a convex structure that fits into the concave structure, so that the joining portion of one seal member and the joining portion of the other seal member fit together.

[0003] Machine tools such as cutting machines are provided with an operation panel for users to operate the machine tool. Some operation panels have a structure in which an operation panel body, which is equipped with a display, buttons and switches for user operation, etc., is attached to a housing with a waterproof packing in between.

[0004] Japanese Patent Application Laid-Open No. 2002-364752

[0005] However, when the sealing member joining structure described in Patent Document 1 is applied to the above-mentioned operation panel, the joint between one sealing member and the other sealing member is exposed on the upper surface in the direction of gravity, and therefore, if a gap occurs at the joint, liquid will seep into the inside of the sealing member from the outside due to the influence of gravity.

[0006] The present disclosure has been made in view of the above, and aims to provide a waterproof gasket that has a plurality of divided pieces and can prevent liquid from entering due to the influence of gravity.

[0007] To solve the above-mentioned problems and achieve the object, the waterproof gasket according to the present disclosure is a waterproof gasket having a frame shape in which a side extending in the height direction of the frame shape is divided into a plurality of segments by a dividing portion. The waterproof gasket has a joining region, which is a surface along the depth direction of the waterproof gasket and is the dividing surface of two segments facing each other in the height direction, and the joining region of the segment located lower in the height direction has a connection region where the height of the joining region changes in the height direction, an outer joining region which is a region outside the frame shape across the connection region, and an inner joining region which is a region inside the frame shape across the connection region. The position of the connection region in the height direction is higher than the position of the outer joining edge which is the outer end of the waterproof gasket in the outer joining region, or the position of the inner joining edge which is the inner end of the waterproof gasket in the inner joining region in the height direction is higher than the position of the outer joining edge.

[0008] According to the present disclosure, it is possible to obtain a waterproof packing that has a plurality of divided pieces and can prevent liquid from entering due to the influence of gravity.

[0009] a perspective view showing an example of a machine tool according to a first embodiment; a front view of an operation panel provided in the machine tool shown in FIG. 1, as viewed from the front side; a perspective view of an example of an operation panel according to the first embodiment, as viewed from the front side; an exploded perspective view of an example of an operation panel according to the first embodiment, as viewed from the front side; a perspective view of a state in which a waterproof packing is adhered to an operation panel main body provided in the operation panel according to the first embodiment, as viewed from the front side; a perspective view of a state in which a waterproof packing is adhered to an operation panel main body provided in the operation panel according to the first embodiment, as viewed from the rear side; a perspective view of a waterproof packing provided in the operation panel according to the first embodiment, as viewed from the front side; an enlarged perspective view showing an enlarged first divided portion of the waterproof packing shown in FIG. 7; 14 is an enlarged front view showing an enlargement of the second divided portion of the waterproof packing shown in FIG. 7; FIG. 15 is an enlarged perspective view showing an enlargement of the second divided portion of the waterproof packing shown in FIG. 7; FIG. 16 is an enlarged front view showing an enlargement of the second divided portion of the waterproof packing shown in FIG. 7; FIG. 17 is an enlarged front view showing an enlargement of the first divided portion of the waterproof packing shown in FIG. 7;

[0010] The waterproof packing and the operation panel according to the embodiment will be described in detail below with reference to the drawings.

[0011] First Embodiment Fig. 1 is a perspective view showing an example of a machine tool 100 according to a first embodiment. Fig. 2 is a front view of an operation panel 110 included in the machine tool 100 shown in Fig. 1 . Fig. 3 is a perspective view of an example of the operation panel 110 included in the first embodiment, seen from the front. Fig. 4 is an exploded perspective view of an example of the operation panel 110 included in the first embodiment, seen from the front. Fig. 5 is a perspective view of an operation panel main body 1 included in the operation panel 110 according to the first embodiment, with a waterproof gasket 3 adhered thereto, seen from the front. Fig. 6 is a perspective view of an operation panel main body 1 included in the operation panel 110 according to the first embodiment, with a waterproof gasket 3 adhered thereto, seen from the rear. The waterproof gasket 3 included in the operation panel 110 shown in Fig. 3 will now be described.

[0012] As shown in FIGS. 3 and 4, the operation panel 110 according to the first embodiment includes an operation panel body 1, a housing 2, and a frame-shaped waterproof packing 3.

[0013] The width direction of the operation panel 110 corresponds to the width direction of the operation panel main body 1, the housing 2, and the waterproof gasket 3, and corresponds to the X-axis direction in Figures 3 to 6. The depth direction of the operation panel 110 corresponds to the depth direction of the operation panel main body 1, the housing 2, and the waterproof gasket 3, and corresponds to the Y-axis direction in Figures 3 to 6. The height direction of the operation panel 110 corresponds to the height direction of the operation panel main body 1, the housing 2, and the waterproof gasket 3, and corresponds to the Z-axis direction in Figures 3 to 6. In the Y-axis direction, the side on which the operation panel main body 1 is arranged is the front side. In the Y-axis direction, the side on which the housing 2 is arranged is the rear side.

[0014] Operation panel 110 is arranged in machine tool 100 with the width direction of operation panel 110 parallel to the horizontal direction. That is, operation panel main body 1, housing 2, and waterproof packing 3 are arranged in machine tool 100 with the width direction parallel to the horizontal direction and the X-axis direction parallel to the horizontal direction.

[0015] The operation panel main body 1 is a box body in which various operation buttons, which are the display unit or the operation unit for operating the machine tool 100, are arranged on the front body front face 1a, which is the front of the operation panel main body 1, and an opening 1c is formed in the central area of ​​the back body back face 1b, which is the back face of the operation panel main body 1.

[0016] The housing 2 is a box-shaped body with an opening 2b formed in a housing front surface 2a, which is the front surface of the housing 2. The opening 2b is covered from the front side by the operation panel main body 1, which is attached to the housing 2 from the front side. An opening outer edge region 2c, which is an area on the housing front surface 2a adjacent to the opening 2b, comes into contact with the waterproof packing 3.

[0017] The waterproof gasket 3 is sandwiched between the operation panel main body 1 and the housing 2 in the depth direction of the operation panel 110, i.e., in the Y-axis direction. The waterproof gasket 3 is in close contact with an outer peripheral region of the main body rear surface 1b (not shown), which is an area of ​​the main body rear surface 1b adjacent to the outer periphery of the main body rear surface 1b, and an outer peripheral region 2c of the opening of the housing 2, and is sandwiched between the outer peripheral region of the main body rear surface 1b and the outer peripheral region 2c of the opening of the housing 2. In other words, the waterproof gasket 3 is sandwiched between the housing 2 and the operation panel main body 1 in the outer peripheral region 2c of the opening, which is an area of ​​the front surface 2a of the housing adjacent to the opening 2b.

[0018] The waterproof gasket 3 is adhered by double-sided tape (not shown) to either the outer edge region of the main body rear surface 1b or the outer edge region 2c of the opening of the housing 2. Therefore, the waterproof gasket 3 is adhered to the outer edge region of the main body rear surface 1b via the double-sided tape, or to the outer edge region 2c of the opening of the housing 2 via the double-sided tape.

[0019] Fig. 7 is a perspective view of the waterproof gasket 3 included in the operation panel 110 according to the first embodiment, as viewed from the front side. Fig. 8 is an enlarged perspective view showing a first divided portion 3a of the waterproof gasket 3 shown in Fig. 7. Fig. 9 is an enlarged front view showing a first divided portion 3a of the waterproof gasket 3 shown in Fig. 7. Fig. 10 is an enlarged perspective view showing a second divided portion 3b of the waterproof gasket 3 shown in Fig. 7. Fig. 11 is an enlarged front view showing a second divided portion 3b of the waterproof gasket 3 shown in Fig. 7.

[0020] The waterproof gasket 3 has a frame shape. That is, the waterproof gasket 3 has a frame-shaped outer shape in the in-plane direction of the waterproof gasket 3. The in-plane direction of the waterproof gasket 3 is the in-plane direction of the surface visible in a front view, and is a direction parallel to the in-plane direction of the main body front surface 1a of the operation panel main body 1 and the in-plane direction of the housing front surface 2a of the housing 2. That is, the waterproof gasket 3 has a frame shape in the in-plane direction of the main body front surface 1a of the operation panel main body 1 and the in-plane direction of the housing front surface 2a of the housing 2. In the first embodiment, the waterproof gasket 3 has a rectangular frame shape. Note that the frame shape of the waterproof gasket 3 is not limited to a rectangular shape. The corners of the frame shape may be rounded. That is, the frame shape may be any shape as long as it matches the shape of the main body rear surface outer edge region 1b and the shape of the opening outer edge region 2c of the housing 2.

[0021] The waterproof gasket 3 separates an internal region 200, which is an area inside the frame shape in the in-plane direction of the waterproof gasket 3, from an external region 201, which is an area outside the frame shape in the in-plane direction of the waterproof gasket 3. In this way, the frame-shaped waterproof gasket 3 prevents liquid from seeping from the external region 201 outside the frame shape to the internal region 200 inside the frame shape.

[0022] The waterproof packing 3 has a frame shape, and opposing sides extending in the height direction of the frame shape are divided into a plurality of segments.

[0023] The waterproof gasket 3 is divided into two or more segments 31 in the height direction of the waterproof gasket 3. The height direction of the waterproof gasket 3 can be said to be the height direction of the frame shape. In Fig. 7, the waterproof gasket 3 is divided into three segments in the height direction of the waterproof gasket 3. That is, the waterproof gasket 3 is divided at four segments, namely, a first segment 3a, a second segment 3b, a third segment 3c, and a fourth segment 3d, into four segments 31, namely, a first segment 311, a second segment 312, a third segment 313, and a fourth segment 314.

[0024] The first divided portion 3a and the second divided portion 3b have shapes that are upside down in the height direction of the waterproof gasket 3. Similarly, the third divided portion 3c and the fourth divided portion 3d have shapes that are upside down in the height direction of the waterproof gasket 3. Therefore, in the waterproof gasket 3, the two left and right divided portions, i.e., the second divided portion 312 and the fourth divided portion 314, which are two divided portions that face each other in the width direction of the waterproof gasket 3, have bilaterally symmetrical shapes. As a result, for example, if the fourth divided portion 314, which is the divided portion on the right side, is rotated 180 degrees about the central axis extending in the height direction of the waterproof gasket 3, it will take on the shape of the second divided portion 3b, which is the divided portion on the left side, which makes it possible to reduce the number of types of divided portion parts.

[0025] The dividing sections are provided on two opposing sides of the frame shape that extend in the height direction of the waterproof gasket 3. The two opposing sides of the frame shape that extend in the height direction of the waterproof gasket 3 are called vertical sides 51, and the two opposing sides of the frame shape that connect the two vertical sides 51 are called horizontal sides 52. The vertical sides 51 are sides that extend in the height direction of the frame shape. The horizontal sides 52 are sides that extend in the width direction of the frame shape. Therefore, the frame shape of the waterproof gasket 3 has two dividing sections on one vertical side 51, which is a side that extends in the height direction of the frame shape. The dividing sections are provided only on the two opposing vertical sides 51, and not on the horizontal side 52 that is located on the upper side in the height direction of the waterproof gasket 3.

[0026] The dividing surfaces of the divided parts into which the frame-shaped waterproof packing 3 is divided are defined as joint regions 32 where divided pieces 31 facing each other in the height direction of the waterproof packing 3 are joined. In other words, the dividing surfaces of the divided pieces 31 into which the waterproof packing 3 is divided are defined as joint regions 32. The joint regions 32 are surfaces parallel to the depth direction of the waterproof packing 3, i.e., surfaces parallel to the Y-axis direction. In other words, the dividing surfaces of each divided piece are surfaces along the depth direction of the waterproof packing 3, i.e., surfaces along the Y-axis direction.

[0027] In the segment pieces 31, the joining regions 32 of two segment pieces 31 that face each other in the height direction of the waterproof gasket 3 have shapes that are, for example, shifted in parallel in the height direction of the waterproof gasket 3. For example, in FIG. 8 , the joining regions 32 of the first segment piece 311 and the second segment piece 312 that face each other in the height direction of the waterproof gasket 3 have shapes that are shifted in parallel in the height direction of the waterproof gasket 3. Note that the joining regions 32 of the first segment piece 311 and the second segment piece 312 do not need to have shapes that are shifted in parallel in the height direction of the waterproof gasket 3. In other words, the joining regions 32 of two segment pieces 31 that face each other in the height direction of the waterproof gasket 3 do not need to have shapes that are shifted in parallel in the height direction of the waterproof gasket 3.

[0028] The bonding region 32 includes an outer bonding region 321 , an inner bonding region 322 , and a connection region 33 .

[0029] The connection region 33 is a region in the joining region 32 where the outer joining region 321 and the inner joining region 322 are connected, and is a region where the height of the joining region 32 changes. The connection region 33 is the lowermost or uppermost portion of the joining region 32. The connection region 33 has a linear or planar shape. In Fig. 7, the connection region 33 is a bent portion that is bent in the in-plane direction of the waterproof packing 3, but the corners of the bent portion may also be smoothed.

[0030] In the bonding region 32, the region on the external region 201 side, which is the region outside the waterproof gasket 3, with the connection region 33 as the boundary, is defined as an outer bonding region 321, which is the first bonding region. The outer end of the waterproof gasket 3 in the outer bonding region 321 is defined as an outer bonding edge 3211. The outer bonding edge 3211 is a side extending in the depth direction of the waterproof gasket 3, i.e., a side extending in the Y-axis direction.

[0031] In the bonding region 32, the region on the inner side of the waterproof gasket 3, that is, the internal region 200 side, with the connection region 33 as the boundary, is defined as an inner bonding region 322, which is a second bonding region. The inner end of the waterproof gasket 3 in the inner bonding region 322 is defined as an inner bonding edge 3221. The inner bonding edge 3221 is a side extending in the depth direction of the waterproof gasket 3, i.e., a side extending in the Y-axis direction.

[0032] In the waterproof packing 3 shown in FIG. 7 , the connection region 33 is the inner end edge of the waterproof packing 3 in the outer joining region 321 and is also the outer end edge of the waterproof packing 3 in the inner joining region 322 .

[0033] The joining region 32, which has an outer joining region 321, an inner joining region 322, and a connection region 33, is shaped so that the outer joining edge 3211 in the outer joining region 321 and the inner joining edge 3221 in the inner joining region 322 have a height difference in the height direction of the waterproof gasket 3.

[0034] The divided shapes of the divided portions of the waterproof gasket 3 will be described below. As shown in Fig. 7 , the first divided portion 3a and the third divided portion 3c of the waterproof gasket 3 are first-shaped portions divided by the first divided shape. The first divided portion 3a and the third divided portion 3c have shapes symmetrical with respect to the YZ plane passing through the center of the waterproof gasket 3 in the width direction. As shown in Fig. 7 , the second divided portion 3b and the fourth divided portion 3d of the waterproof gasket 3 are second-shaped portions divided by the second divided shape. The second divided portion 3b and the fourth divided portion 3d have shapes symmetrical with respect to the YZ plane passing through the center of the waterproof gasket 3 in the width direction.

[0035] First, the first divided shape will be described using the first divided portion 3 a as an example. The first divided shape satisfies the first condition that “in the height direction of the waterproof gasket 3, the position of the connection region 33 is higher than the position of the outer joint edge 3211, which is the outer end of the waterproof gasket 3 in the outer joint region 321.”

[0036] In other words, the first divided shape satisfies the condition that "the inclination of the outer bonding region 321 in the height direction of the waterproof gasket 3 increases from the external region 201 side, which is the region outside the waterproof gasket 3, toward the internal region 200 side, which is the region inside the waterproof gasket 3." In other words, the outer bonding region 321 is an upwardly inclined surface that increases in the height direction of the waterproof gasket 3 from the external region 201 side toward the internal region 200 side.

[0037] When the divided shape of the first divided portion 3a satisfies the first condition, the slope of the inner joint region 322 in the height direction of the waterproof packing 3 decreases from the external region 201 side, which is the region outside the waterproof packing 3, toward the internal region 200 side, which is the region inside the waterproof packing 3. In other words, when the divided shape of the divided portion satisfies the first condition, the position of the inner joint edge 3221 in the inner joint region 322 in the height direction of the waterproof packing 3 is lower than the position of the connection region 33.

[0038] As long as the first divided shape satisfies the first condition, the positional relationship between the outer joining edge 3211 in the outer joining region 321 and the inner joining edge 3221 in the inner joining region 322 in the height direction of the waterproof gasket 3 does not matter.

[0039] Because the first divided portion 3a has the above-described first divided shape, liquid cannot penetrate into the first divided portion 3a due to the influence of gravity. Liquid flows only from top to bottom in the direction of gravity due to the influence of gravity and does not rise up the upwardly inclined surface. That is, liquid that drips from above along the outer periphery of the waterproof gasket 3 onto the first divided portion 3a due to the influence of gravity cannot rise up the outer joint region 321 of the first divided portion 3a, which is the upwardly inclined surface, due to the influence of gravity. Therefore, liquid cannot penetrate into the first divided portion 3a. Liquid cannot penetrate from the outer region 201, which is the outer region of the waterproof gasket 3, toward the inner region 200, which is the inner region of the waterproof gasket 3. This prevents liquid from penetrating from the outer region 201 of the waterproof gasket 3 to the inner region 200 of the waterproof gasket 3 due to the influence of gravity.

[0040] Furthermore, the third divided portion 3c, which has a shape symmetrical to the first divided portion 3a with respect to the YZ plane passing through the center of the waterproof packing 3 in the width direction, also provides the same effect as the first divided portion 3a.

[0041] Next, the second divided shape will be described using the second divided portion 3b as an example. The second divided shape satisfies the second condition that "in the height direction of the waterproof gasket 3, the position of the inner joint edge 3221, which is the inner end of the waterproof gasket 3 in the inner joint region 322, is higher than the position of the outer joint edge 3211, which is the outer end of the waterproof gasket 3 in the outer joint region 321."

[0042] When the divided shape of the second divided portion 3b satisfies the second condition, the inclination of the inner bonding region 322 in the height direction of the waterproof packing 3 increases from the external region 201 side, which is the region outside the waterproof packing 3, toward the internal region 200 side, which is the region inside the waterproof packing 3. In addition, the inclination of the outer bonding region 321 in the height direction of the waterproof packing 3 decreases from the external region 201 side, which is the region outside the waterproof packing 3, toward the internal region 200 side, which is the region inside the waterproof packing 3.

[0043] In this way, in the second divided shape of the second divided portion 3b, the slope of the outer joint area 321 in the height direction of the waterproof gasket 3 becomes lower from the external area 201 side, which is the outer area of ​​the waterproof gasket 3, to the internal area 200 side, which is the inner area of ​​the waterproof gasket 3, so that liquid that drips from above along the outer periphery of the waterproof gasket 3 to the second divided portion 3b due to the influence of gravity can penetrate into the outer joint area 321 due to the influence of gravity.

[0044] However, because the second divided shape of the second divided part 3b satisfies the second condition, liquid that has penetrated into the outer joint region 321 cannot penetrate into the internal region 200, which is the region inside the waterproof gasket 3. With the second divided shape of the second divided part 3b, the position of the connection region 33 is lower than the position of the outer joint region 321 in the height direction of the waterproof gasket 3. For this reason, liquid penetrates into the inner joint region 322 up to point A, which is at the same height as the outer joint region 321 in the height direction of the waterproof gasket 3.

[0045] However, the inner bonding region 322 forms an inclined surface that slopes upward from point A toward the inner region 200. Therefore, the liquid cannot rise above point A due to the influence of gravity. This makes it possible to prevent the second divided portion 3b from allowing liquid to seep from the outer region 201 side of the waterproof gasket 3 to the inner region 200 side of the waterproof gasket 3 due to the influence of gravity.

[0046] Furthermore, the fourth divided portion 3d, which has a shape symmetrical to the second divided portion 3b with respect to the YZ plane passing through the center of the waterproof packing 3 in the width direction, also provides the same effect as the first divided portion 3a.

[0047] Next, a method for providing a height difference in the height direction of the waterproof packing 3 between the position of the outer joining edge 3211 of the outer joining region 321 and the position of the inner joining edge 3221 of the inner joining region 322 so as to satisfy the second condition in the second divided shape of the second divided portion 3b described above will be described. Fig. 12 is a diagram illustrating an example of a method for setting the second divided shape of the second divided portion 3b in the waterproof packing 3 shown in Fig. 7.

[0048] 12 , the angle of the inclination from the connection region 33 toward the outer joint edge 3211, which is the outer end of the waterproof packing 3 in the outer joint region 321, relative to the horizontal direction in the in-plane direction of the waterproof packing 3 is defined as angle B. In other words, the inclination angle of the outer joint region 321 relative to an imaginary plane 41 perpendicular to the height direction of the waterproof packing 3 in the in-plane direction of the waterproof packing 3 is defined as angle B.

[0049] 12 , the angle of the inclination from the connection region 33 toward the inner joint edge 3221, which is the inner end of the waterproof packing 3 in the inner joint region 322, relative to the horizontal direction in the in-plane direction of the waterproof packing 3 is defined as angle C. In other words, the inclination angle of the inner joint region 322 relative to an imaginary plane 41 perpendicular to the height direction of the waterproof packing 3 in the in-plane direction of the waterproof packing 3 is defined as angle C.

[0050] Here, angle B and angle C are set to the same angle. The position of the connection region 33 in the width direction of the waterproof gasket 3 is set to a position different from the center position α of the second divided piece 312 in the width direction of the waterproof gasket 3. The position of the connection region 33 is set to a position closer to the outer region 201 than the center position α of the second divided piece 312 in the width direction of the waterproof gasket 3. That is, the connection region 33 is located outside the frame shape of the waterproof gasket 3 in the width direction of the waterproof gasket 3 than the center position α of the second divided piece 312. This allows a difference in height in the height direction of the waterproof gasket 3 to be set between the outer joint edge 3211 of the outer joint region 321 and the inner joint edge 3221 of the inner joint region 322 so that the second divided shape of the second divided portion 3b satisfies the second condition.

[0051] In other words, by setting angle B and angle C to the same angle and shifting the position of the connection area 33 in the width direction of the waterproof gasket 3 to a position different from the center position α of the second divided piece 312 in the width direction of the waterproof gasket 3, the divided shape of the second divided portion 3b can be set to a second divided shape that satisfies the second condition.

[0052] The center position α of the second split piece 312 in the width direction of the waterproof gasket 3 is the center position between the position of the outer joining edge 3211 of the outer joining area 321 and the position of the inner joining edge 3221 of the inner joining area 322 in the width direction of the waterproof gasket 3.

[0053] 7, when one vertical side 51, which is a side extending in one height direction, has two divided portions, the first divided portion 3a and the second divided portion 3b shown in FIG. 12, the two divided portions have shapes that are upside down in the height direction of the waterproof packing 3. In the second divided portion 3b, the outer bonding region 321 and the inner bonding region 322 each have one inclined surface, and the connection region 33 is located outside the frame shape of the waterproof packing 3 with respect to the center position α of the second divided piece 312 in the width direction of the waterproof packing 3, and the waterproof packing 3 has a divided shape in which the angle of inclination of the outer bonding region 321 with respect to an imaginary plane 41 perpendicular to the height direction of the waterproof packing 3 and the angle of inclination of the inner bonding region 322 with respect to the imaginary plane 41 are the same in the in-plane direction.

[0054] Next, another example of a method for providing a height difference in the height direction of the waterproof packing 3 between the position of the outer joining edge 3211 of the outer joining region 321 and the position of the inner joining edge 3221 of the inner joining region 322 so as to satisfy the second condition in the second divided shape of the second divided portion 3b described above will be described. Fig. 13 is a diagram illustrating another example of a method for setting the second divided shape of the second divided portion 3b in the waterproof packing 3 shown in Fig. 7.

[0055] 13 , the angle of the inclination from the connection region 33 toward the inner joint edge 3221, which is the inner end of the waterproof packing 3 in the inner joint region 322, relative to the horizontal direction in the in-plane direction of the waterproof packing 3 is defined as angle D. In other words, the inclination angle of the inner joint region 322 relative to an imaginary plane 41 perpendicular to the height direction of the waterproof packing 3 in the in-plane direction of the waterproof packing 3 is defined as angle D.

[0056] 13 , the angle of the inclination from the connection region 33 toward the outer joint edge 3211, which is the outer end of the waterproof packing 3 in the outer joint region 321, relative to the horizontal direction in the in-plane direction of the waterproof packing 3 is defined as angle E. In other words, the inclination angle of the outer joint region 321 relative to an imaginary plane 41 perpendicular to the height direction of the waterproof packing 3 in the in-plane direction of the waterproof packing 3 is defined as angle E.

[0057] Here, angle D and angle E are set to different angles so that angle D is larger than angle E, i.e., angle E < angle D. In this case, the position of the inner joint edge 3221, which is the inner end of the waterproof gasket 3 in the inner joint region 322, and the position of the outer joint edge 3211, which is the outer end of the waterproof gasket 3 in the outer joint region 321, in the height direction of the waterproof gasket 3 vary depending on the magnitudes of angle D and angle E and the position of the connection region 33 in the width direction of the waterproof gasket 3. Therefore, the position of the connection region 33 in the width direction of the waterproof gasket 3 is adjusted so that the position of the inner joint edge 3221 is higher than the position of the outer joint edge 3211 in the height direction of the waterproof gasket 3. As a result, in the second divided shape of the second divided portion 3b, a height difference can be set in the height direction of the waterproof gasket 3 between the position of the outer joint edge 3211 in the outer joint region 321 and the position of the inner joint edge 3221 in the inner joint region 322 so as to satisfy the second condition.

[0058] 13 shows the case where the connection region 33 is located at the center position α of the second divided piece 312 in the width direction of the waterproof gasket 3, but the position of the connection region 33 in the width direction of the waterproof gasket 3 is not limited to this. The position of the connection region 33 in the width direction of the waterproof gasket 3 may be set so that the position of the inner joint edge 3221 is higher than the position of the outer joint edge 3211 for a combination of angles D and E that satisfies the condition of angle E < angle D. This makes it possible to set a height difference in the height direction of the waterproof gasket 3 between the position of the outer joint edge 3211 of the outer joint region 321 and the position of the inner joint edge 3221 of the inner joint region 322 so that the second divided shape of the second divided portion 3b satisfies the second condition.

[0059] 7, when one vertical side 51, which is a side extending in one height direction, has two divided portions, the first divided portion 3a and the second divided portion 3b shown in FIG. 13, the two divided portions have shapes that are upside down in the height direction of the waterproof gasket 3. The second divided portion 3b has an outer bonding region 321 and an inner bonding region 322, each of which is an inclined surface, and the angle of inclination of the inner bonding region 322 with respect to an imaginary plane 41 perpendicular to the height direction of the waterproof gasket 3 in the in-plane direction of the waterproof gasket 3 is larger than the angle of inclination of the outer bonding region 321 with respect to the imaginary plane 41, and the position of the inner bonding side 3221 is higher than the position of the outer bonding side 3211 in the height direction of the waterproof gasket 3.

[0060] Next, the third and fourth divided shapes of the waterproof gasket will be described. FIG. 14 is a perspective view of the waterproof gasket 35 provided in the operation panel 110 according to the first embodiment, viewed from the front side. The frame-shaped waterproof gasket 35 is a modified version of the waterproof gasket 3 described above, and differs from the waterproof gasket 3 described above in that it has a first divided section 3e, a second divided section 3f, a third divided section 3g, and a fourth divided section 3h instead of the first divided section 3a, the second divided section 3b, the third divided section 3c, and the fourth divided section 3d. Note that, for ease of understanding, in FIGS. 14 to 16, the same components as those of the waterproof gasket 3 are denoted by the same reference numerals as those of the waterproof gasket 3, and detailed descriptions thereof will be omitted.

[0061] The waterproof gasket 35 is divided into four parts, namely, the first part 3e, the second part 3f, the third part 3g, and the fourth part 3h, and is divided into four parts 31, namely, the first part 311, the second part 312, the third part 313, and the fourth part 314.

[0062] The first divided portion 3e and the second divided portion 3f have shapes that are upside down in the height direction of the waterproof gasket 35. Similarly, the third divided portion 3g and the fourth divided portion 3h have shapes that are upside down in the height direction of the waterproof gasket 35. Therefore, the two left and right divided pieces of the waterproof gasket 35, i.e., the second divided piece 312 and the fourth divided piece 314, which are two divided pieces that face each other in the width direction of the waterproof gasket 35, have symmetrical shapes. As a result, for example, when the fourth divided piece 314, which is the divided piece on the right side, is rotated 180 degrees about the central axis extending in the height direction of the waterproof gasket 35, it takes on the shape of the second divided piece 3b, which is the divided piece on the left side, which makes it possible to reduce the number of types of divided piece parts.

[0063] As shown in Fig. 14 , the first divided portion 3e and the third divided portion 3g of the waterproof gasket 35 are third-shaped portions divided by a third divided shape. The first divided portion 3e and the third divided portion 3g have shapes symmetrical with respect to the YZ plane passing through the center of the waterproof gasket 35 in the width direction. As shown in Fig. 14 , the second divided portion 3f and the fourth divided portion 3h of the waterproof gasket 35 are fourth-shaped portions divided by a fourth divided shape. The second divided portion 3f and the fourth divided portion 3h have shapes symmetrical with respect to the YZ plane passing through the center of the waterproof gasket 35 in the width direction.

[0064] First, the third divided shape will be described using the first divided portion 3e as an example. The third divided shape is a modified example of the first divided shape. Fig. 15 is an enlarged front view showing the first divided portion 3e of the waterproof gasket 35 shown in Fig. 14. In Fig. 15, distance F is the difference in height between the position of the outer joint edge 3211, which is the outer end of the waterproof gasket 35 in the outer joint region 321, and the position of the connection region 33 in the height direction of the waterproof gasket 35.

[0065] As shown in FIG. 15 , in the third divided shape of the first divided section 3e, the joining area 32 of the second divided piece 312 has a rectangular convex shape in the in-plane direction of the waterproof gasket 35. Also, as shown in FIG. 15 , in the third divided shape of the first divided section 3e, the joining area 32 of the first divided piece 311 has a rectangular concave shape in the in-plane direction of the waterproof gasket 35. The convex shape of the joining area 32 of the second divided piece 312 and the concave shape of the joining area 32 of the first divided piece 311 are parallel to each other in the height direction of the waterproof gasket 3. The convex shape of the joining area 32 of the second divided piece 312 and the concave shape of the joining area 32 of the first divided piece 311 do not need to be parallel to each other in the height direction of the waterproof gasket 3. In other words, the joining areas 32 of two divided pieces 31 facing each other in the height direction of the waterproof gasket 3 do not need to be parallel to each other in the height direction of the waterproof gasket 3.

[0066] 15 , in the third divided shape of the first divided portion 3 e, the outer joint region 321 of the second divided piece 312 is formed into a right-angled L shape with the side facing the inner region 200, which is the region inside the waterproof packing 35, rising upward. In addition, the inner joint region 322 of the second divided piece 312 is formed into a right-angled L shape with the side facing the outer region 201, which is the region outside the waterproof packing 35, rising upward.

[0067] 15 , in the third divided shape of the first divided portion 3 e, the outer joint region 321 of the first divided piece 311 has a right-angled L-shape with the inner region 200 side, which is the region inside the waterproof packing 35, rising upward. The inner joint region 322 of the first divided piece 311 has a right-angled L-shape with the outer region 201 side, which is the region outside the waterproof packing 35, rising upward.

[0068] The connection area 33 of the first divided piece 311 and the connection area 33 of the second divided piece 312 are parallel to a plane perpendicular to the height direction of the waterproof packing 35 .

[0069] Therefore, in the third divided shape of the first divided portion 3e, the joining area 32, which is the divided surface of the second divided piece 312 located on the lower side in the height direction of the waterproof packing 35, has an uneven shape with a rectangular convex shape, and the joining area 32, which is the divided surface of the first divided piece 311 located on the upper side in the height direction of the waterproof packing 35, has an uneven shape with a rectangular concave shape, and the convex shape and the concave shape are shaped such that they are shifted parallel to each other in the height direction of the waterproof packing 35. In the third divided shape of the first divided portion 3e, when the second divided piece 312 and the first divided piece 311 are brought into close contact with each other, the convex shape of the joining area 32 of the second divided piece 312 is fitted into the concave shape of the joining area 32 of the first divided piece 311.

[0070] The third divided shape of the first divided portion 3e satisfies the condition of "distance F > 0." That is, the third divided shape satisfies the third condition that "in the height direction of the waterproof gasket 35, the position of the connection region 33 is higher than the position of the outer joint edge 3211, which is the outer end of the waterproof gasket 35 in the outer joint region 321." Since the third divided shape of the first divided portion 3e satisfies the distance F > 0, the position of the connection region 33 is higher than the position of the outer joint edge 3211 in the height direction of the waterproof gasket 35, and therefore it is possible to prevent liquid from entering the first divided portion 3e due to the effect of gravity.

[0071] For example, even if liquid drips from above along the outer periphery of the waterproof packing 35 onto the first divided portion 3e due to the effect of gravity and seeps into the outer joint region 321, the liquid cannot rise from the outer joint region 321 to the connection region 33 due to the effect of gravity and cannot seep into the inner region 200 side of the outer joint region 321. This makes it possible for the first divided portion 3e to prevent liquid from seeping into the inner region 200 of the waterproof packing 35 due to the effect of gravity.

[0072] Furthermore, the third divided portion 3g, which has a shape symmetrical to the first divided portion 3e with respect to the YZ plane passing through the center of the waterproof packing 35 in the width direction, also provides the same effect as the first divided portion 3e.

[0073] Next, the fourth divided shape will be described using the second divided portion 3f as an example. The fourth divided shape is a modified example of the second divided shape. FIG. 16 is an enlarged front view showing the second divided portion 3f of the waterproof gasket 35 shown in FIG. 14 . In FIG. 16 , distance G is the difference in height between the position of the outer joint edge 3211, which is the outer end of the waterproof gasket 35 in the outer joint region 321, and the position of the connection region 33 in the height direction of the waterproof gasket 35. Distance H is the difference in height between the position of the inner joint edge 3221, which is the inner end of the waterproof gasket 35 in the inner joint region 322, and the position of the connection region 33 in the height direction of the waterproof gasket 35.

[0074] 16, in the fourth divided shape of second divided portion 3f, joining region 32, which is the dividing surface of third divided piece 313, has a rectangular concave shape in the in-plane direction of waterproof gasket 35. Also, in the fourth divided shape of second divided portion 3f, as shown in FIG. 16, joining region 32, which is the dividing surface of second divided piece 312, has a rectangular convex shape in the in-plane direction of waterproof gasket 35. The convex shape of connection region 33 of third divided piece 313 and the concave shape of connection region 33 of second divided piece 312 are shaped in a parallel shift in the height direction of waterproof gasket 35.

[0075] 16 , in the fourth divided shape of the second divided portion 3 f, the outer joint region 321 of the third divided piece 313 is formed in a right-angled L shape with a downward-pointing edge on the side of the inner region 200, which is the region inside the waterproof packing 35. The inner joint region 322 of the third divided piece 313 is formed in a right-angled L shape with a downward-pointing edge on the side of the outer region 201, which is the region outside the waterproof packing 35.

[0076] 16 , in the fourth divided shape of the second divided portion 3 f, the outer joint region 321 of the second divided piece 312 is formed into a right-angled L shape with a downward-pointing edge on the side of the inner region 200, which is the region inside the waterproof packing 35. The inner joint region 322 of the second divided piece 312 is formed into a right-angled L shape with a downward-pointing edge on the side of the outer region 201, which is the region outside the waterproof packing 35.

[0077] The connection area 33 of the second divided piece 312 and the connection area 33 of the third divided piece 313 are parallel to a plane perpendicular to the height direction of the waterproof packing 35 .

[0078] Therefore, in the fourth divided shape of second divided portion 3f, joining area 32, which is the divided surface of third divided piece 313 located on the lower side in the height direction of waterproof packing 35, has an uneven shape with a rectangular concave shape, and joining area 32, which is the divided surface of second divided piece 312 located on the upper side in the height direction of waterproof packing 35, has an uneven shape with a rectangular convex shape, and the convex and concave shapes are shaped such that they are shifted parallel to each other in the height direction of waterproof packing 35. In the fourth divided shape of second divided portion 3f, when third divided piece 313 and second divided piece 312 are brought into close contact with each other, the convex shape of joining area 32 of second divided piece 312 is fitted into the concave shape of joining area 32 of third divided piece 313.

[0079] The fourth divided shape of the second divided portion 3 f satisfies the condition "H > G." That is, the fourth divided shape satisfies the fourth condition that "in the height direction of the waterproof gasket 35, the difference in height between the position of the inner joint edge 3221, which is the inner end of the waterproof gasket 35 in the inner joint region 322, and the position of the connection region 33 is greater than the difference in height between the position of the outer joint edge 3211, which is the outer end of the waterproof gasket 35 in the outer joint region 321, and the position of the connection region 33." Since the fourth divided shape of the second divided portion 3 f satisfies distance H > distance G, the position of the inner joint edge 3221 is higher than the position of the outer joint region 321 in the height direction of the waterproof gasket 35, and therefore it is possible to prevent liquid from entering the inner region 200 from the outer joint region 321 due to the effect of gravity.

[0080] For example, even if liquid drips from above along the outer periphery of the waterproof packing 35 onto the second divided portion 3f due to the effect of gravity and seeps into the connection region 33 from the outer joint region 321, the liquid cannot rise above point J, which is at the same height as the outer joint edge 3211 in the height direction of the waterproof packing 35, to the inner joint region 322 above, due to the effect of gravity, and cannot seep into the inner region 200 beyond point J. This makes it possible for the second divided portion 3f to prevent liquid from seeping into the inner region 200 of the waterproof packing 35 due to the effect of gravity.

[0081] The divided shape shown in Figures 15 and 16 is such that, in two divided pieces 31 facing each other in the height direction of the waterproof gasket 35, the joint area 32 of one divided piece 31 has an uneven shape with a rectangular convex shape, and the joint area 32 of the other divided piece 31 has an uneven shape with a rectangular concave shape into which the convex shape fits.

[0082] Furthermore, the fourth divided portion 3h, which has a shape symmetrical to the second divided portion 3f with respect to the YZ plane passing through the center of the waterproof packing 35 in the width direction, also provides the same effect as the second divided portion 3f.

[0083] Furthermore, in the shape of the dividing portion shown in Figures 15 and 16, the width of the concave shape of the joining area 32 in the width direction of the waterproof gasket 35 is wider than the width of the convex shape of the joining area 32, and there may be a gap between the side wall of the concave shape and the side wall of the convex shape.

[0084] FIG. 17 is a perspective view showing a modified waterproof gasket 36 included in the operation panel 110 according to the first embodiment. The modified waterproof gasket 36 shown in FIG. 17 is divided into two parts at two dividing portions, the first dividing portion 3a and the fourth dividing portion 3d, of the waterproof gasket 3 shown in FIG. 7. The waterproof gasket 36 also provides the same effect as the waterproof gasket 3 described above. That is, it is sufficient that at least one dividing portion is provided on each of the two opposing vertical sides 51 of the frame shape. Furthermore, the position of the dividing portion on the vertical sides 51 is not limited.

[0085] The waterproof gasket 3 can be produced by cutting out the segments 31 from a large sheet of material. In this case, rather than cutting out the entire outer shape of the waterproof gasket 3 from the sheet of material, each segment 31 is cut out individually from the sheet of material. For this reason, it is preferable that the outer shape of the segments 31 in the in-plane direction of the waterproof gasket 3 has minimal protrusion in the short direction of the segments 31 in the in-plane direction of the waterproof gasket 3. This reduces material waste when cutting out the segments 31 from the sheet of material, improves the yield in manufacturing the segments 31, and improves the yield in manufacturing the waterproof gasket 3.

[0086] Therefore, it is preferable that the outer shape of the split pieces 31 in the in-plane direction of the waterproof gasket 3 is a strip shape, and it is more preferable that there is little protrusion in the short direction of the split pieces 31. On the other hand, if the outer shape of the split pieces 31 in the in-plane direction of the waterproof gasket 3 is L-shaped, the yield in manufacturing the split pieces 31 will be low, and the yield in manufacturing the waterproof gasket 3 will be low.

[0087] Fig. 18 is a front view showing a modified example of the waterproof gasket 3 included in the operation panel 110 according to the first embodiment. In Fig. 18, for ease of understanding, the same components as those of the waterproof gasket 3 are denoted by the same reference numerals as those of the waterproof gasket 3, and detailed description thereof will be omitted. In the modified waterproof gasket 37 shown in Fig. 18, the divided portion is contained within the range of the short side of the first divided piece 311 in the in-plane direction of the waterproof gasket 37. This makes it possible to further reduce material waste when the first divided piece 311 is cut out from the material sheet.

[0088] The waterproof packing 3 is basically used with the divided pieces 31 of the waterproof packing 3 in close contact with each other in the height direction of the waterproof packing 3, but the divided pieces 31 of the waterproof packing 3 may be used with the divided pieces 31 spaced apart from each other in the height direction of the waterproof packing 3 as long as the effects of the waterproof packing 3 can be obtained. In this case as well, the effects of the waterproof packing 3 described above can be obtained.

[0089] By using the waterproof gasket 3 with its height direction parallel to the vertical direction or with its height direction tilted at an angle of less than 90 degrees from the vertical direction, the operation panel 110 can obtain the effects of the waterproof gasket 3 described above.

[0090] According to the above-mentioned embodiment 1, a waterproof gasket is realized which has a frame shape and in which an edge extending in the height direction of the frame shape is divided into a plurality of segments by a dividing section, and among the joint areas which are surfaces along the depth direction of the waterproof gasket and which are the dividing surfaces of two segments opposing each other in the height direction, the joint area of ​​the segment located lower in the height direction has a connection area which is an area where the height of the joint area changes in the height direction, an outer joint area which is an area outside the frame shape separated by the connection area, and an inner joint area which is an area inside the frame shape separated by the connection area, and a waterproof gasket is realized in which the position of the connection area in the height direction is higher than the position of the outer joint edge which is the outer end of the waterproof gasket in the outer joint area, or the position of the inner joint edge which is the inner end of the frame shape in the inner joint area in the height direction is higher than the position of the outer joint edge.

[0091] As described above, according to the waterproof gasket 3 of embodiment 1, the position of the connection region 33 in the height direction of the waterproof gasket 3 is higher than the position of the outer joining edge 3211, which is the outer end of the waterproof gasket 3 in the outer joining region 321, or the position of the inner joining edge 3221, which is the inner end of the waterproof gasket 3 in the inner joining region 322 in the height direction of the waterproof gasket 3, is higher than the position of the outer joining edge 3211, so that it is possible to prevent liquid from penetrating from the outer region 201 side of the waterproof gasket 3 to the inner region 200 side of the waterproof gasket 3 due to the influence of gravity.

[0092] Furthermore, the waterproof packing 3 according to the first embodiment can prevent liquid from entering even if a certain gap occurs between the divided pieces 31 that face each other in the height direction of the waterproof packing 3 .

[0093] Furthermore, according to the waterproof gasket 3 of the first embodiment, by dividing the frame-like shape into a plurality of segments 31, it is possible to cut out each segment 31 from the material sheet, rather than cutting out the entire outer shape of the waterproof gasket 3 from the material sheet. This reduces material waste when cutting out the segments 31 from the material sheet, improving the yield in manufacturing the segments 31 and thus improving the yield in manufacturing the waterproof gasket 3. Furthermore, by making the shapes of both ends of the segments 31 inverted, it is possible to reduce the number of component types.

[0094] The configurations shown in the above embodiments are merely examples, and may be combined with other known technologies, and parts of the configurations may be omitted or modified without departing from the spirit of the invention.

[0095] 1 Operation panel main body, 1a Main body front, 1b Main body back, 1c Opening, 2 Housing, 2a Housing front, 2b Opening, 2c Opening outer edge area, 3, 35, 36, 37 Waterproof packing, 3a, 3e First divided part, 3b, 3f Second divided part, 3c, 3g Third divided part, 3d, 3h Fourth divided part, 31 Divided piece, 32 Joining area, 33 Connecting area, 41 Virtual surface, 51 Vertical side, 52 Horizontal side, 100 Machine tool, 110 Operation panel, 200 Internal area, 201 External area, 311 First dividing piece, 312 Second dividing piece, 313 Third dividing piece, 314 Fourth dividing piece, 321 Outer joining area, 322 Inner joining area, 3211 Outside joint side, 3221 Inside joint side, α Center position.

Claims

1. A waterproof packing having a frame shape, an edge extending in the height direction of the frame shape being divided into a plurality of segments by dividing sections, wherein of the joint areas which are faces along the depth direction of the waterproof packing and which are the dividing surfaces of two segments opposing each other in the height direction, the joint area of ​​the segment which is located lower in the height direction has: a connection area which is an area where the height of the joint area changes in the height direction, an outer joint area which is an area outside the frame shape with the connection area as the boundary, and an inner joint area which is an area inside the frame shape with the connection area as the boundary, wherein the position of the connection area in the height direction is higher than the position of the outer joint edge which is the outer end of the waterproof packing in the outer joint area, or the position of the inner joint edge which is the inner end of the waterproof packing in the inner joint area in the height direction is higher than the position of the outer joint edge.

2. The waterproof packing according to claim 1, characterized in that: the frame shape has two divided sections on one side extending in the height direction; the two divided sections have shapes that are upside down in the height direction; the outer joint area and the inner joint area each have a single inclined surface; the connection area is located outside the frame shape relative to the center position of the divided pieces in the width direction of the waterproof packing; and in the in-plane direction of the waterproof packing, the angle of inclination of the outer joint area with respect to an imaginary plane perpendicular to the height direction of the waterproof packing and the angle of inclination of the inner joint area with respect to the imaginary plane are the same.

3. The waterproof packing according to claim 1, characterized in that: the frame shape has two divided sections on one side extending in the height direction; the two divided sections have shapes that are upside down in the height direction; the outer joint area and the inner joint area each have a single inclined surface; in the in-plane direction of the waterproof packing, the angle of inclination of the inner joint area with respect to an imaginary plane perpendicular to the height direction of the waterproof packing is greater than the angle of inclination of the outer joint area with respect to the imaginary plane; and the position of the inner joint edge, which is the inner end of the waterproof packing in the inner joint area in the height direction, is higher than the position of the outer joint edge.

4. The waterproof packing according to claim 1, wherein, in two divided pieces that face each other in the height direction of the waterproof packing, the joining area of ​​one divided piece has an uneven shape with a rectangular convex shape, and the joining area of ​​the other divided piece has an uneven shape with a rectangular concave shape into which the convex shape fits.

5. The waterproof packing according to any one of claims 1 to 4, wherein the frame shape is rectangular.

6. An operation panel comprising: a waterproof packing according to any one of claims 1 to 5; a housing having an opening formed on the front side; and an operation panel main body on which a display unit or an operation unit is disposed and which closes the opening of the housing from the front side, wherein the waterproof packing is sandwiched between the housing and the operation panel main body in the opening outer edge region which is an area adjacent to the opening on the front side.

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