JP5318264B2 - Equipment with seal structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus having a seal structure causing a high waterproof effect by relatively low compressive force of packing, by restraining an occurrence of a warp and a deformation of a casing. <P>SOLUTION: The apparatus includes a seal unit 6 disposed between first and second casings 5A and 5B and presses the casings to seal them. The seal unit 6 includes first and second annular gaskets 7A and 7B, and first and second support members 8A and 8B for supporting the first and the second gaskets 7A and 7B. Ring projected parts are arranged in the first and the second annular gaskets 7A and 7B. The first and the second support members 8A and 8B include ring recessed parts, and the first and the second casings 5A and 5B include ring recessed parts. The seal unit 6 is located between the first and the second casings 5A and 5B. The core parts of the ring projected parts and the ring recessed parts are made eccentric by a prescribed distance to oppose each other. The gasket members 7A and 7B supporting the support members 8A and 8B by the first and the second casings 5A and 5B are pressed to fit and connect the ring projected parts in the ring recessed parts. <P>COPYRIGHT: (C)2013,JPO&amp;INPIT

Description

  The present invention relates to a waterproof seal structure and a device provided with the seal structure, and more particularly to a waterproof seal structure that performs a waterproof seal by uneven bonding and a device provided with the seal structure.

  Since electrical circuits and the like are housed inside electrical and electronic devices, the housing has a waterproof structure.

With reference to FIG. 15, the general waterproof seal structure of a prior art is demonstrated. In addition, FIG. 15 is sectional drawing which showed the principal part of the waterproof seal structure of a prior art.
The waterproof seal structure 14 includes a pair of upper and lower casings 15A and 15B and a packing member 16 made of a rubber material interposed between the upper and lower casings 15A and 15B. The packing member 16 includes an upper and lower casing. 15A, with those having at least 2 Tsunoyama portion ₁₆ respectively on opposite sides to 15B 1, 16 _2, and ₁₆ 3, 16 ₄ and one valley ₁₆ 0, 16 _0, up and down the packing member 16 It is structured to be sealed by being sandwiched between the casings 15A and 15B and applying pressure to the casings 15A and 15B. Patent Document 1 below has a pair of upper and lower covers formed with V-shaped grooves around the coupling surface, and an oval packing in a cross-sectional view of a size that fits into the V-shaped grooves of these upper and lower covers. A waterproof housing structure that seals by inserting a part of packing into each V-shaped groove of the upper and lower covers and pressing both covers is disclosed.

Japanese Patent Laid-Open No. 9-275281 (paragraphs [0020] to [0022], FIG. 7)

  In these seal structures, since a packing member is disposed between a pair of housings and sealed by pressing with the housing, the housing is easily warped or deformed. In addition, due to the restoring force of the packing member, there is a deformation difference of the casing in the vicinity of the claw part and the screw part for locking the casing and other places, and the compression amount of the packing also varies, which affects the waterproof performance. Sometimes. Furthermore, in order to enhance the waterproofing effect, it is necessary to increase the amount of compression of the packing. If this amount of compression is increased, there is a problem that the housing is more easily deformed in proportion thereto. Note that the waterproof housing structure of Patent Document 1 has a structure in which an oval packing is inserted between the upper and lower covers and compresses. Therefore, in order to enhance the waterproof effect, the compression amount of the packing must be increased. The same problem is latent.

  The present invention has been made to solve such problems of the prior art, and the object of the present invention is to suppress the occurrence of warping and deformation of the casing and to increase the pressure with a relatively low packing pressure. An object of the present invention is to provide a device provided with a waterproof seal structure that provides a waterproof effect.

  Another object of the present invention is to provide a device that is applied to a casing rotating unit provided with the above-described waterproof seal structure.

In order to achieve the above object, an apparatus according to claim 1 includes a pair of first and second casings, and a seal unit interposed between the first and second casings. 1. In a device that seals the sealing unit by pressing the casing between the second casings,
The seal unit has a packing member formed of an elastic member made of a pair of donut-shaped first and second annular packings connected by a connecting part having a through hole inside, and has a through hole inside and the first member. And a support member formed of a rigid member composed of a pair of first and second support members that support the second annular packing,
One or a plurality of ring-shaped projections on the first surface and the first back surface of the first annular packing and the second surface and the second back surface of the second annular packing, respectively, centering on the through hole of the connecting portion. Are arranged in concentric circles at approximately equal intervals,
Each of the first and second support members has one or a plurality of ring-shaped recesses into which the ring-shaped protrusions provided on the first back surface and the second surface are fitted to the front surface. Concentrically arranged at substantially equal intervals around the center,
The first and second housings are provided with ring-shaped recesses into which the respective ring-shaped protrusions provided on the first surface and the second surface are fitted on one surface,
A seal unit composed of the packing member and the support member is interposed between the first and second housings, and the ring-shaped projecting portion and the core portion of the ring-shaped recess portion facing each other are eccentric by a predetermined distance. The ring-shaped projecting portion having elasticity by pressing the packing member that supports the supporting member by the first and second housings and is fitted into the ring-shaped recessed portion and coupled to each other. And

  According to a second aspect of the present invention, in the device according to the first aspect, the ring-shaped recess is formed by a recess or a V-shaped groove, and the ring-shaped protrusion is formed by the recess or the V-shaped. It is characterized in that it is formed with a chevron projection that fits into the groove.

  According to a third aspect of the present invention, in the device according to the first aspect, a virtual perpendicular passing through the apex of the ring-shaped projection and a virtual perpendicular passing through the center of the bottom of the ring-shaped recess facing the ring-shaped projection. The eccentric distance L between the ring-shaped recess and the ring-shaped recess is set within a range of 0 <L <3 / 4W, where W is the width of the upper opening of the ring-shaped recess.

  According to a fourth aspect of the present invention, there is provided the device according to the first aspect, wherein the ring-shaped protrusions and the ring-shaped recesses are each arranged in a concentric circle shape at predetermined intervals, The outermost ring-shaped protrusion and the ring-shaped recessed groove are formed in a fixed portion that changes the shape of the ring-shaped protrusion and the ring-shaped recessed groove therebetween to prevent the packing member from sliding.

The invention according to claim 5 is the device according to claim 4, wherein the ring-shaped protrusion is formed taller than the ring-shaped protrusion.
The ring-shaped recess groove is formed deeper than the ring-shaped recess.

  A sixth aspect of the present invention is the apparatus according to any one of the first to fifth aspects, wherein the first casing and the second casing are rotatable about the seal unit. And

  By providing the above configuration, the present invention has the following excellent effects. That is, according to the first aspect of the present invention, the pair of first and second casings, the ring-shaped protrusions and the ring-shaped recesses provided in the seal unit are arranged in a concentric circle shape at substantially equal intervals. Yes. For this reason, the first and second housings are arranged to face each other with the core portions of the ring-shaped projections and the ring-shaped recesses facing each other being eccentric by a predetermined distance, and pressing between the first and second housings. The ring-shaped protrusion or ring-shaped recess having elasticity is fitted into and joined to the ring-shaped recess or ring-shaped protrusion formed by the other rigid member, so the elastic deformation of the ring-shaped protrusion or ring-shaped recess is used. Thus, a high waterproof effect can be obtained even with a low pressing force between the first and second housings. Accordingly, it is possible to prevent warping or deformation of the member, and to realize a stable waterproof performance by eliminating variations in the compression amount of the seal member.

  According to the second aspect of the present invention, the ring-shaped depression is formed into a depression or a V-shaped groove, and the ring-shaped protrusion is formed into a mountain-shaped protrusion or a mountain-shaped hook-shaped protrusion that fits into the depression or the V-shaped groove. Thereby, formation of a ring-shaped dent part and a ring-shaped projection part becomes easy.

  According to the invention of claim 3, by setting the eccentric distance L within the range of 0 <L <3 / 4W, even if the force for pressing the first and second members is relatively low, the waterproof effect is high. In addition, it is possible to prevent warping or deformation of the member, and to eliminate a variation in the compression amount of the seal member, thereby realizing a stable waterproof performance.

  According to the inventions of claims 4 and 5, the packing member can be fixed easily, and a higher waterproof effect can be obtained.

  According to the sixth aspect of the present invention, since the concentric circles are arranged at substantially equal intervals, the first and second housings can be rotated by a predetermined angle with a seal sealed around the seal unit. become.

FIG. 1 shows a waterproof seal structure according to the working principle of the present invention, FIG. 1A is a state before a pair of members are joined, FIG. 1B is a state in the middle of joining, and FIG. 1C is a sectional view showing the joined state. is there. 2 shows a waterproof seal structure according to Reference Example 1 of the present invention, FIG. 2A is a state before a pair of members are joined, FIG. 2B is a state in the middle of joining, and FIG. 2C is a sectional view showing the joined state. It is. FIG. 3 is a sectional view showing a modification of the waterproof seal structure A-1. FIG. 4 is a sectional view showing a modification of the waterproof seal structure A-1. FIG. 5 shows a waterproof seal structure according to Reference Example 2 of the present invention, FIG. 5A is a cross-sectional view showing a state before a pair of members are joined, and FIG. FIG. 6 is a sectional view showing a modification of the waterproof seal structure B. FIG. 7 is a cross-sectional view showing a modified example of the waterproof seal structure B. 8 shows a waterproof seal structure according to Reference Example 3 of the present invention, FIG. 8A is a cross-sectional view showing a state before the pair of members are joined, and FIG. FIG. 9 is a cross-sectional view showing a modified example of the waterproof seal structure C. FIG. 10 is a cross-sectional view showing a modified example of the waterproof seal structure C. 11A to 11C are external perspective views showing a movable state of the small device according to the embodiment. FIG. 12 is an exploded perspective view of FIG. FIG. 13 is an enlarged view of a part of FIG. 14A is a cross-sectional view taken along line XIV-XIV in FIG. 11A, and FIG. 14B is an enlarged cross-sectional view of the XIV portion in FIG. 14A. FIG. 15 is a cross-sectional view showing the main part of a waterproof seal structure of the prior art.

  Hereinafter, the best embodiment of the present invention will be described with reference to the drawings. However, the embodiment described below exemplifies a waterproof seal structure for embodying the technical idea of the present invention and a device provided with the waterproof seal structure. It is not intended to be specific to equipment provided with a seal structure, and other embodiments within the scope of the claims are equally applicable.

First, the principle of operation of the waterproof seal structure of the present invention will be described with reference to FIG. 1 shows a main part of the waterproof seal structure according to the operation principle of the present invention, FIG. 1A shows a state before a pair of members are joined, FIG. 1B shows a state in the middle of joining, and FIG. 1C shows a joined state. FIG.
This seal structure A has a first member I constituting a casing and a second member II constituting a packing. Among these members, the first member I is formed of a relatively hard member such as a synthetic resin material, and the second member II is formed of an elastic member such as rubber or silicon resin. The first member I is provided with a mountain-shaped protrusion T in a cross-sectional view on the surface Ia facing the second member II. The protrusion T is a predetermined height h protrudes from the facing surface Ia, the width length of the base has a W _1. The protrusion T also passes from the left upward inclined surface T _L that rises from the left side to the left and the right at the first virtual perpendicular L ₁ that passes through the apex a and is substantially perpendicular to the opposing surface Ia, and from the right side. It has to have a right upward inclined surface T _R.

The second member II is formed with a concave dent portion M in a sectional view of a size that fits into the protrusion T on the surface IIa facing the first member I. The recess M has an upper opening width of W ₂ and a depth d. The recessed portion M is in the second boundary virtual vertical line L ₂ extending substantially vertically central portion b relative as opposed surface IIa of lowermost point or bottom, left down slope descended from the left to the right and left in FIG. 1A and a downhill inclined surface M _R from the surface M _L and right. First, the width length W ₁ and a height h and the aperture width length W ₂ and the relationship between the depth d, width length W ₁ and the opening width dimension W ₂ and is substantially the same as the length of the second member I, II The height h and the depth d are substantially the same length. Further, it left and right upward inclined surface T _L, T _R and the left and right downward slope M _L, the angle of the M _R is made substantially the same.

The first and second members I and II are coupled such that the recess M of the second member II slides into the protrusion T of the first member I. In this sliding coupling, if the distance between the first virtual perpendicular L ₁ and the second virtual perpendicular L ₂ (so-called pitch) is L, the pitch L is set in the range of 0 <L <3 / 4W _1. Yes. Further, this range is preferably 1 / 4W ₁ ≦ L ≦ 1 / 2W ₁ . Note that L is an eccentric distance.

1A is a pitch L of the first, second member I, II has become half a pitch, i.e., a state shifted by one pitch of half of the width dimension W _1. In this state, when both ends of the second member II in the horizontal direction are fixed and the first member I is pressed against the second member II from above, first, the left downward inclined surface of the recessed portion M of the second member II. M _L abuts the upper left Ri inclined surface T _L of the left side of the first member I. Then, further first member I is pushed, slides while being elastically deformed left down the inclined surface M _L of the recess M of the second member II along the upper left Ri inclined surface T _L (see FIG. 1B). This slid movement, left down the inclined surface M _L of the recess M of the second member II fits into the upper left Ri inclined surface T _L left of the first member I (see Figure 1C). That is, FIG. 1B, as shown in FIG. 1C, left down the inclined surface M _L of the recess M of the second member II is forcibly attracted to the upper left Ri inclined surface T _L left of the first member I, dents The part M fits into the protrusion T. In this sliding movement, the entire second member II is not slid to the left side in FIG. 1B, but the recessed portion M portion of the second member II is elastically deformed, and the recessed portion M fits into the protruding portion T. In other words, the protrusion T pulls the recess M, and the protrusion T fits into the recess M. Therefore, the second member II is fixed by a fixing means (not shown) so as not to slide and move in the horizontal direction. The fixing means is fixed by means as shown in FIG. 14B, for example. The fixing means in FIG. 14B will be described later.
According to this waterproof seal structure A, the recess M of the second member II is elastically deformed and fitted into the protrusion T of the first member I. And when this dent part M fits into the projection part T, the reaction force which tries to return to the part will work on the dent part M as a result of the dent part M being elastically deformed. As a reaction force, it is strongly contacted. By this contact, the first and second members I and II are tightly sealed to prevent water from entering from this portion. The contact force between the first and second members I and II does not depend on the pressing force as in the prior art, but uses the restoring force between the recessed portion M and the protruding portion T so that the first, Even if the force for pressing the second members I and II is low, high sealing performance can be obtained.

  In this waterproof seal structure A, the first member I is constituted by a casing and the second member II is constituted by packing. However, the first member I may be constituted by packing and the second member II may be constituted by a casing. Moreover, although the projection part T was provided in the 1st member I and the recessed part M was provided in the 2nd member II, conversely, you may provide the recessed part M in the 1st member I, and the projection part T in the 2nd member II. For example, if the first member I is a packing and the second member II is a casing, the first member I is provided with a recess M and the second member II is provided with a protrusion T. It fits into the recess M in an elastic deformation, for example, a twisted state. Even in this state, a waterproof seal effect can be obtained. In this case, the second member II having elasticity is fixed by the fixing means so as not to slide. Further, the recessed portion M may be a recessed hole or groove having a predetermined shape (for example, a V-shaped groove), while the protruding portion T may be a protrusion fitted into the hole or a hook-shaped protrusion having a predetermined width and entering the groove. . For example, if a groove having a predetermined length and a protrusion having a predetermined length that fits into the groove are used, relative movement between them can be performed, and waterproof sealing can be performed between the moving members.

  Hereinafter, examples and reference examples of the present invention to which this operation principle is applied will be described.

[Reference Example 1]
A waterproof seal structure according to Reference Example 1 of the present invention will be described with reference to FIG. 2 shows a waterproof seal structure according to Reference Example 1 of the present invention, FIG. 2A shows a state before a pair of members are joined, FIG. 2B shows a state in the middle of joining, and FIG. 2C shows a joined state, respectively. It is sectional drawing.

The waterproof seal structure A-1 includes a pair of first and second members 1 and 2 constituting a casing and a packing member 3 constituting a packing, and a plurality of first and second members 1 and 2 are provided. 1 and the other packing member 3 are provided with protrusions that fit into these recesses. Specifically, the waterproof seal structure A-1 includes a pair of first and second members 1 and 2 and a packing member 3 interposed between these members. 2 is provided with two recesses 1 ₁ , 1 ₂ and 2 ₁ , 2 ₂ on the surfaces 1 a and 2 a facing the packing member 3, respectively, and the packing member 3 includes these recesses 1 ₁ , 1, 2. Four protrusions 3 _{1 to} 3 ₄ that fit into ₂ and 2 ₁ , 2 ₂ are provided, and they are coupled by the principle of operation of the waterproof seal structure A described above. Hereinafter, individual members will be described.

The first member 1 is made of a relatively hard plate-like body having a predetermined thickness in which _two recesses 1 ₁ and 1 ₂ are provided at a predetermined interval on a surface 1a facing the packing member 3 and is molded with resin. It is formed by the body. The second member 2 is also made of the same material. That is, two recessed portions 2 ₁ and 2 ₂ are also formed on the facing surface 2a. The packing member 3 is provided with _four projecting portions 3 _{1 to} 3 ₄ at locations corresponding to the respective recessed portions 1 ₁ , 1 ₂ and 2 ₁ , 2 ₂ of the first and second members ₁ , ₂ and is elastic. For example, rubber or silicon resin. The four protrusions 1 ₁ , 1 ₂ and 2 ₁ , 2 _{2 of the first} and second members ₁ , ₂ and the four protrusions 3 _{1 to} 3 ₄ of the packing member 3 are related to the protrusions and the recesses. The eccentric distance L to the part is set in the range L of the waterproof seal structure A in FIG.

In the coupling using these members, first, the packing member 3 is disposed between the first and second members 1 and 2 (see FIG. 2A). Next, a predetermined pressing force is applied to the first and second members 1 and 2 and pressed against the packing member 3. By this pressing, the respective protrusions 3 _{1 to} 3 ₄ of the packing member 3 are forcibly elastically deformed, and the respective recessed portions 1 ₁ , 1 _2, 2 ₁ , 2, 2 of the _first and second members 1, 2 are forced. ₂ (see FIGS. 2B and 2C). For example, the protrusion of the packing member 3 3 ₁ and the recessed portion 1 ₁ of the first member 1, fitted in the same manner as described above waterproof seal structure A. Also be combined in the same way fitted to the protrusion 3 ₂ and recesses 1 _2. Further, the other protrusions 3 ₃ , 3 ₄ and the recesses 2 ₁ , 2 ₂ are combined in the same manner except for the different directions. As a result, in the state where the coupling is completed, as shown in FIG. 2C, the four protrusions 3 _{1 to} 3 ₄ of the packing member 3 are the four recesses 1 ₁ and 2 of the first and second members 1 and 2. The first and second members 1 and 2 and the packing member 3 are waterproofed by being fitted into the 1 ₂ and 2 ₁ and 2 ₂ in a state where they have received a reaction force in the direction indicated by the arrow, and elastically contacting with this reaction force. Sealed.

  In this waterproof seal structure A-1, the first and second members 1, 2 and the packing member 3 have two and four recesses and protrusions, but this number may be further increased. Further, the first and second members and the packing members 1 and 2 are fixed by, for example, fixing means as shown in FIG. 14B so that the packing member 3 does not slide. The fixing means in FIG. 14B will be described later.

As shown in FIG. 2, this waterproof seal structure A-1 includes two protrusions 3 ₁ , 3 ₂ out of the _four protrusions 3 _{1 to} 3 ₄ of the packing member 3. The two projections 3 ₃ , 3 ₄ on the other side are positioned closer to the left side of the recesses 2 ₁ , 2 ₂ of the second member 2 on the right side of the parts 1 ₁ , 1 _2. May be changed arbitrarily. Below, the modification of the waterproof seal structure A-1 which changed this position is demonstrated with reference to FIG. 3, FIG. 3 and 4 are cross-sectional views showing modifications of the waterproof seal structure A-1. In the following modifications, the waterproof seal structure A-1 is different in the positions of the protrusions and the recesses, and the other configurations are the same. Therefore, the same reference numerals are assigned to the common components, and the description is incorporated. As a matter of fact, different configurations will be described.

As shown in FIG. 3A, the waterproof seal structure A-2 according to the modified example includes the recesses 2 ₁ , 2 ₂ and the protrusions 3 ₃ , 3 _{4 in} the relationship between the second member 2 and the packing member 3. The position is different from that of the waterproof seal structure A-1. In the same manner, a waterproof seal structure A-3, each recess 1 ₁ and the recessed portion 2 ₂ and the packing member of the protrusions 3 ₁ position and the second member 2 of the packing member 3 of the first member 1 positions of the protrusions _{3 4} 3 (Fig. 3B see), a waterproof seal structure a-4 is recessed portion _{2 1} of the protrusion _{3 1} and the second member 2 of the recess portion _{1 1} and the packing member 3 of the first member 1 a position (see FIG. 4A) of the protrusion 3 ₃ of the packing member 3, further waterproof seal structure a-5 is recessed protrusions 3 ₂ and the second member 2 of the recess portion 1 ₂ and the packing member 3 of the first member 1 position parts _{2 1} and the protrusion _{3 3} of the packing member 3 (see FIG. 4B) are different.

These waterproof seal structures A-1 to A-5 include four recesses 1 ₁ , 1 ₂ and 2 ₁ , 2 _{2 of} each of the first and second members ₁ , ₂ and the packing member 3. The eccentric distance L between each projecting portion and the recessed portion in relation to the projecting portions 3 _{1 to} 3 ₄ is set in the range of L of the waterproof seal structure A in FIG. These bonds are also combined in the same manner as the waterproof seal structure A. Therefore, these waterproof seal structures A-1 to A-5 apply this seal structure because the recesses of the first and second members and the protrusions of the packing member are arranged at different positions. The seal design becomes easy because it can be selected and applied according to the location.

[Reference Example 2]
A waterproof seal structure according to Reference Example 2 of the present invention will be described with reference to FIG. 5 shows a waterproof seal structure according to Reference Example 2 of the present invention, FIG. 5A is a sectional view showing a state before the members are joined, and FIG.

This waterproof seal structure B has a pair of first and second members 1B and 2B and a packing member 3B. The first and second members 1B and 2B have a plurality of protrusions, and the packing member 3B has these parts. It has a structure provided with a plurality of recesses into which the protrusions are fitted. Specifically, the waterproof seal structure B includes a pair of first and second members 1B and 2B and a packing member 3B interposed between these members, and the first and second members 1B and 2B. Are provided with two protrusions 1 ₁₁ , 1 ₁₂ and 2 ₁₁ , 2 ₂₂ on the surface facing the packing member 3B, respectively, and the packing member 3B has the first and second members 1B, 2B. Each of the protrusions 1 ₁₁ , 1 ₁₂ and 2 ₁₁ , 2 ₂₂ is provided with four recesses 3 _{11 to} 3 ₁₄ for sliding.

In this waterproof seal structure B, the recesses 3 _{11 to} 3 ₁₄ of the packing member 3B are fitted and connected to the projections 1 ₁₁ , 1 ₁₂ and 2 ₁₁ , 2 ₂₂ of the first and second members 1B and 2B, respectively. Is done. That is, each protrusion is related to the four protrusions 1 ₁₁ , 1 ₁₂ and 2 ₁₁ , 2 _{22 of} the first and second members 1 B and 2 B and the four recesses 3 _{11 to} 3 ₁₄ of the packing member 3. The eccentric distance L between the dent and the recess is set in the range L of the waterproof seal structure A described above. These bonds are also combined in the same manner as the waterproof seal structure A. Accordingly, the waterproof seal structure B is selected according to the location where the seal structure is applied because the protrusions of the first and second members and the recesses of the packing member are arranged at different positions. Since it can be applied, the seal design becomes easy.

  In this waterproof seal structure B, as shown in FIG. 5, the protrusions and the recesses are arranged at predetermined positions, but the positions may be arbitrarily changed. Below, the modification of the waterproof seal structure B which changed this position is demonstrated. 6 and 7 are sectional views showing modifications of the waterproof seal structure B. FIG.

Waterproof seal structure B-1 according to the modification, as shown in FIG. 6A, the recess _{3 11} and the second member 2 of the protrusion ₂₁₁ and the packing member of the protrusions _{1 11} and the packing member 3B of the first member 1B in relation to the third recess _313, the position of the protrusion _{1 11} and recess _{3 11} and the protrusions ₂₁₁ and the recessed portion ₃₁₃ is different from that of the waterproof seal structure B. Hereinafter, in the same manner, the waterproof seal structure B-2 includes the positions of the projections 2 ₁₁ , 2 ₂₂ of the second member 2B and the recesses 3 ₁₃ , 3 ₁₄ of the packing member 3B (FIG. 6B), the waterproof seal structure B-3. the position of the recessed portion _{3 14} of the projections _{2 22} and the packing member 3B of the recessed portion _{3 12} and the second member 2B protrusions _{1 12} and the packing member 3B of the first member 1B (FIG. 7) are different.

These waterproof seal structure B and B-1 to B-3, each recess of the packing member 3B ₃ 11 _{to 3 14} is the first, the protrusions of the second member 1B, 2B _{1 11, 1 12} and _{2 11} 2 and ₂₂ , respectively. That is, each protrusion is related to the four protrusions 1 ₁₁ , 1 ₁₂ and 2 ₁₁ , 2 _{22 of} the first and second members 1B and 2B and the four protrusions 3 _{11 to} 3 _{14 of the} packing member 3B. The eccentric distance L between the dent and the recess is set in the range L of the waterproof seal structure A described above. These bonds are also combined in the same manner as the waterproof seal structure A. Therefore, since the waterproof seal structures B and B-1 to B-3 have the protrusions of the first and second members and the recesses of the packing member disposed at different positions, this seal structure is applied. The seal design becomes easy because it can be selected and applied according to the location to be applied.

[Modification 3]
With reference to FIG. 8, the waterproof seal structure which concerns on the modification 3 of this invention is demonstrated. 8 shows a waterproof seal structure according to Modification 3 of the present invention, FIG. 8A is a sectional view showing a state before a pair of members are joined, and FIG. 8B is a sectional view showing a halfway state of joining.
This waterproof seal structure C has a pair of first and second members 1C, 2C and a packing member 3C. The first member 1C has a plurality of recesses, the second member 2C has a plurality of protrusions, and a packing. The member 3 </ b> C has a configuration in which a protruding portion into which each recessed portion of the first member 1 </ b> C fits and a recessed portion into which each recessed portion of the second member 2 </ b> C fits. Specifically, the waterproof seal structure C includes a pair of first and second members 1C and 2C, and a packing member 3C interposed between these members. The first member 1C is provided with two recesses 1 ₃₁ , 1 ₃₂ on the surface facing the packing member 3C, and the second member 2C has two protrusions on the surface facing the packing member 3C. 2 ₃₁ and 2 ₃₂ are provided, and the packing member 3C is provided with two protrusions 3 ₃₁ and 3 ₃₂ and recesses 3 ₃₃ and 3 ₃₄ on the surfaces facing the first and second members 1C and 2C, respectively. It has a configuration.

In this waterproof seal structure C, the protrusions 3 ₃₁ , 3 ₃₂ and the recesses 3 ₃₃ , 3 ₃₄ of the packing member 3C are the recesses 1 ₃₁ , 1 ₃₂ and the protrusions of the first and second members 1C, 2C. 2 ₃₁ and 2 ₃₂ are respectively fitted and coupled. That is, the two protrusions 3 ₃₁ , 3 ₃₂ and the two recesses 3 ₃₃ , 3 ₃₄ of the packing member 3C are the two recesses 1 ₃₁ , 1 ₃₂ , 2 of the first and second members 1C, 2C. The eccentric distance L between each protrusion and the recess is set in the range L of the waterproof seal structure A in relation to the individual protrusions 2 ₃₁ and 2 ₃₂ . These bonds are also combined in the same manner as the waterproof seal structure A. Therefore, the waterproof seal structure C includes the recesses 1 ₃₁ and 1 _{32 of} the first member 1C, the protrusions 2 ₃₁ and 2 _{32 of} the second member, and the protrusions and recesses 3 _{31 to} 3 _{34 of the} packing member 3C. Since they are arranged at different positions, they can be selected and applied according to the location where this seal structure is applied, so that the seal design becomes easy.

  In this waterproof seal structure C, the protrusion and the recess are disposed at the position shown in FIG. 8, but this position may be arbitrarily changed. Below, the modification of the waterproof seal structure C which changed this position is demonstrated. 9 and 10 are sectional views showing modifications of the waterproof seal structure C. FIG.

Waterproof seal structure C-1 in FIG. 9A, the waterproof seal structure positions of the protrusion _{3 31} and recess _{3 33} protrusions _{2 31} and the packing member 3C of the recessed portion _{1 31} and the second member 2C of the first member 1C Different from C. Hereinafter, similarly, the waterproof seal structure C-2 includes positions of the protrusions 2 ₃₁ and 2 ₃₂ of the second member 2C and the recesses 3 ₃₃ and 3 ₃₄ of the packing member 3C (FIG. 9B), a waterproof seal structure. C-3 differs in the positions (FIG. 10) of the recessed part 1 ₃₂ of the first member 1C, the protruding part 2 ₃₂ of the second member 2C, and the protruding part 3 ₃₂ and the recessed part 3 ₃₄ of the packing member 3.

In these waterproof seal structures C and C-1 to C-3, the projecting portions 3 ₃₁ , 3 ₃₂ and the recessed portions 3 ₃₃ , 3 ₃₄ of the packing member 3C are the recessed portions of the first and second members 1C, 2C. 1 ₃₁ , 1 ₃₂ and protrusions 2 ₃₁ , 2 ₃₂ are respectively fitted and coupled. That is, the two protruding portions 3 ₃₁ , 3 ₃₂ and the recessed portions 3 ₃₃ , 3 ₃₄ of the packing member 3C are the recessed portions 1 ₃₁ , 1 ₃₂ and the protruding portions 2 ₃₁ , 2 of the first and second members 1C, 2C. _In relation to ₃₂ , each eccentric distance L is set in the range of L of the waterproof seal structure A described above. These bonds are also combined in the same manner as the waterproof seal structure A. Therefore, these waterproof seal structures are selected according to the location where this seal structure is applied, because the recesses of the first and second members and the protrusions of the packing member are arranged at different positions. Since it can be applied, the seal design becomes easy.

[Example]
The waterproof seal structure can be used for various electronic devices such as mobile phones and other small devices. Hereinafter, with reference to FIGS. 11-14, the example used for the small apparatus is demonstrated. 11A to 11C are external perspective views showing the movable state of the small device, FIG. 12 is an exploded perspective view of the small device in FIG. 11, FIG. 13 is an enlarged view of a part of FIG. 12, and FIG. FIG. 14B is an enlarged sectional view of the XIVB portion of FIG. 14A.

As shown in FIGS. 11A to 11C and FIG. 12, the small device 4 includes a pair of first and second cover members 5A and 5B disposed up and down, and a seal interposed between the cover members 5A and 5B. And a unit 6. Seal unit 6, a first pair of donut-shaped, which are connected by the connecting portion has a through hole 5 ₀ therein, a second annular packing 7A, the packing member 7 made 7B, first these, the second annular The first and second annular packings 7A and 7B are composed of a pair of first and second support members 8A and 8B that support the packings 7A and 7B, as shown in FIG. each annular packing 7A, the front and back surfaces of 7B, that is, the second surface 7B ₁ (Note the first surface 7A ₁ and the first back surface 7A ₂ and second annular packing 7B of the first annular gasket 7A, the second surface 7B ₁ is has the bottom in FIG. 13, since when viewed from the entire packing member 7 and the first surface 7A ₁ of the first annular gasket 7A corresponds to the surface and a second surface 7B ₁₎ and the 2 back 7B _2, its Respectively four of the ring-shaped projection 7 _{1-7 4} is arranged coaxially circularly at substantially equal intervals around the through-hole 7 ₀ of the connecting portion 7C. The first and second support members 8A and 8B are respectively provided with ring-shaped projections 7 _{1 to} 7 ₄ provided on the first back surface 7A ₂ and the second back surface 7B ₂ on the front surfaces 8A ′ and 8B ′. groove 8 _{1-8 4} indentations four ring shape fits is disposed coaxially circularly at substantially equal intervals around the through-hole 8 _0.
Further, the first and second cover members 5A and 5B are fitted with the respective ring-shaped protrusions 7 _{1 to} 7 ₄ provided on the first surface 7A ₁ and the second surface 7B ₁ on the respective surfaces 5a and 5a. Ring-shaped recessed grooves 5 _{1 to} 5 ₄ (see FIG. 12) to be inserted are provided.

In the coupling using these members, first, the packing member 7 and the support member 8 are interposed between the pair of upper and lower first and second cover members 5A and 5B. At that time, the packings supported by the support member 8 using the first and second cover members 5A and 5B are arranged so as to be opposed to each other by decentering the cores of the ring-shaped projections and the ring recess grooves facing each other. The ring-shaped protrusions 7 _{1 to} 7 ₄ having elasticity by pressing the member 7 are fitted into the ring-shaped recessed grooves 5 _{1 to} 5 ₄ and 8 ₁ to 8 ₄ to be coupled. The eccentricity of the ring-shaped protrusion and the ring-shaped recessed groove facing each other is eccentric to the range set by the relationship between the protrusion and the recessed portion of the waterproof seal structure. That is, the eccentric distance is set in the range of the eccentric distance L of the waterproof seal structure A described above. These bonds are also combined in the same manner as the waterproof seal structure A.

This fitting coupling, a pair of upper and lower first, second cover member 5A, 5B, 4 pieces of the ring-shaped projection and the ring-shaped recess groove provided in the sealing unit 6, around the through-hole 7 ₀ of the connecting portion 7C Since the concentric circles are arranged at substantially equal intervals, the pair of upper and lower cover members 5A and 5B can rotate 360 degrees around the seal unit 6 with a waterproof seal as shown in FIG. become. FIG. 11B shows a state where the upper cover member is rotated 90 degrees, and FIG. 11C shows a state where the upper cover member is rotated 180 degrees. The small device 5 can be applied to, for example, a mobile phone.

  The small device 4 has four ring-shaped protrusions and ring-shaped recessed grooves, but is not limited to this number. When there are three or more ring-shaped protrusions and recessed grooves arranged concentrically, the innermost and outermost ring-shaped protrusions and ring-shaped recessed grooves have shapes and shapes between them. It is preferable to form so as to be a fixed portion that prevents sliding movement by changing the above. For example, the ring-shaped protrusion is raised and the ring-shaped recessed groove is deepened. In addition, the ring protrusion and the ring recess groove may be reversed, and the cover member and the support member may be provided with a ring protrusion, and the cover member may be provided with the ring recess.

Hereinafter, individual members will be described.
First, a pair of upper and lower cover members 5A and 5B will be described with reference to FIG. These cover members 5A and 5B have the same structure, and when assembled, the upper cover member 5A is coupled to the lower cover member 5B upside down. Therefore, one cover member 5B will be described with reference to the other cover member 5A.

  As shown in FIG. 12, the cover member 5B has a rectangular bottom plate portion 5a ′ (see the cover member 5A) having a pair of opposing short sides and long sides, and a predetermined distance from the periphery of the bottom plate portion 5a ′. It consists of a shallow dish-like body having a short side plate portion 5b erected in length, and is formed of a molded body made of a resin or a metal material.

On the back surface 5a of the bottom plate portion 5a ′ of the cover member 5B (this surface is the front surface of the cover member 5B), a substantially circular shape with a size that allows the support member 8 to be mounted at a location near one short side. The recessed hole 5c is formed. Recessed hole 5c has a size and depth the supporting member 8 is accommodated, provided with a through hole 5 ₀ in the center of the bottom plate portion 5a ', 4 pieces of ring-shaped recessed groove around the through-hole 5 ₀ 5 ₁ to 5 ₄ are formed coaxially circular with a predetermined interval. Out of these four ring-shaped recessed grooves 5 _{1 to} 5 ₄ , the innermost and outermost ring-shaped recessed grooves 5 ₁ , 5 ₄ are formed as relatively deep grooves as shown in FIG. This ring-shaped recessed groove serves as a fixing means for preventing the sliding movement of the annular packing. Further, the two ring-shaped recessed grooves 5 ₂ , 5 _{3 in between} are formed as shallow ring-shaped recessed grooves, and these ring-shaped recessed grooves fulfill the function of the recessed portion M of the waterproof seal structure A. (See FIGS. 1A to 1C). In addition, a plurality of fixing protrusions 5c ′ are formed on the side walls of the recessed holes 5c to engage and fix the pair of support members 8A and 8B.

Next, the seal unit will be described with reference to FIG. The seal unit 6 includes a packing member 7 and a support member 8 that supports the packing member 7 from the front and the back.
As shown in FIG. 13, the packing member 7 includes a pair of donut-shaped first and second annular packings 7A and 7B each having a predetermined thickness and having a hole of a predetermined size in the center, and these annular members. packing 7A, 7B and a cylindrical connecting portion 7C that connects the through hole 7 ₀ of the center of the elastic material, is formed by integral molding such as for example rubber or silicone resin.

Each of the pair of first and second annular packings 7A and 7B has a predetermined thickness, and four ring-shaped protrusions are formed on the front and back surfaces, respectively. That second surface 7B ₁ (Note the first surface 7A ₁ and the first back surface 7A ₂ and second annular packing 7B of the first annular gasket 7A, the second surface 7B ₁ is has the bottom in FIG. 13 When viewed from the whole packing member 7, the first surface 7 A ₁ of the first annular packing 7 A is used, and this surface is referred to as a second surface 7 B ₁ ) and four ring-shaped protrusions 7 on each of the second back surface 7 B ₂ . _{1-7 4} is arranged coaxially circularly at substantially equal intervals around the through-hole 7 ₀ of the connecting portion C. Among these ring-shaped protrusions 7 _{1 to} 7 ₄ , the innermost and outermost ring-shaped protrusions 7 ₁ and 7 ₄ are formed with relatively high protrusions, as shown in FIG. The ring-shaped protrusions 7 ₂ and 7 ₃ are formed so as to be short, and the ring-shaped protrusions 7 ₂ and 7 ₃ serve as the protrusions T of the waterproof seal structure A. Also, high across the ring-shaped protrusions 7 _1, 7 ₄ has a fixing portion for preventing movement of the packing member 7.
7 C of connection parts are formed with the one bellows-shaped cylindrical body which can be expanded-contracted. By making the connecting portion 7C into such a cylindrical body, the length between the pair of annular packings 7A and 7B connected to the connecting portion can be expanded and contracted, and the mounting to the support member 8 is simplified. .

  The pair of support members 8A and 8B support the pair of first and second annular packings 7A and 7B from above and below, as well as functions of the recessed portion M of the waterproof seal structure A and the upper and lower cover members. The two support members 8A and 8B are coupled to each other by press-fitting. Therefore, for convenience of explanation, the support member 8 will be described with reference to one support member 8B and the other support member 8A.

The supporting member 8B, as shown in FIG. 13, the through hole 8 ₀ size capable of inserting the packing member 7 in the center, a predetermined thickness is different each diameter periphery of the through hole 8 ₀ It has three annular portions 8a, 8b and 8c, is made of a lid-like body, and is formed of a resin molded body.
The three annular portions 8a, 8b, and 8c include a large-diameter annular portion 8a, a medium-diameter annular portion 8b, and a small-diameter annular portion 8c. The large-diameter annular portion 8a has a predetermined length outward from the intermediate-diameter annular portion 8b. It has a bowl shape and has a flange. The support member 8B is formed with a recessed hole 8d having a diameter and a depth for accommodating the first annular packing 7B from the surface of the large-diameter annular portion 8a toward the medium-diameter annular portion 8b. Holes 8 ₀ is located at the bottom center of the recessed hole 8d. The recessed hole 8d, the groove 8 _{1-8 4} around the through-hole 8 ₀ of the bottom recess 4 of the ring shape is formed coaxially circular with a predetermined interval. Ring-shaped protrusions 7 _{1 to} 7 ₄ are fitted into these ring-shaped recessed grooves 8 ₁ to 8 ₄ . That is, among these four ring-shaped recessed grooves 8 ₁ to 8 ₄ , the innermost and outermost ring-shaped recessed grooves 8 ₁ and 8 ₄ are formed as relatively deep grooves as shown in FIG. 14B. These ring-shaped grooves serve as a fixing means for preventing the sliding movement of the annular packing. Further, the two ring-shaped recessed grooves 8 ₂ and 8 _{3 in between} are formed as shallow ring-shaped recessed grooves, and these ring-shaped recessed grooves serve as the recessed portion M of the waterproof seal structure A. (See FIGS. 1A to 1C). A plurality of notches 8a ′ are formed on the outer periphery of the large-diameter annular portion (flange portion) 8a to engage the fixing projection 5c ′ of the cover member. Further, the small-diameter annular portion 8c is formed with a plurality of locking portions 8c ′ that are engaged with the counterpart support member 8B. The other support member 8A is formed with a locking portion (not shown) for coupling with the support member 8B by press fitting inside the medium-diameter annular portion 8b ′.

The decorative plates 9A and 9B are disposed so as to face the bottom plate portions 5a 'of the upper and lower cover members 5A and 5B. The decorative plates 9A and 9B are provided with holes 9 ₀ through which lead wires are inserted into portions corresponding to the holes of the upper and lower cover members 5A and 5B. 9 ₀ is formed.

The assembly procedure of the upper and lower cover members and the seal unit configured as described above will be described with reference to FIGS. 14A and 14B.
First, the seal unit 6 is assembled. This assembly includes a pair of annular packing 7A, 7B by utilizing the elastic force, rounding the support members 8A, by mounting through 8B of the through hole ₈ 0, ₈ within _0, the annular packing 7A, 7B back surface of The four ring-shaped protrusions 7 _{1 to} 7 ₄ provided in the are inserted into the _four ring-shaped recessed grooves 8 ₁ to 8 ₄ of the support member. That is, the ring-shaped protrusions 7 _{1 to} 7 ₄ of the annular packings 7A and 7B are pushed into the ring-shaped recessed grooves 8 ₁ to 8 _{4 of the} support members 8A and 8B. With this pushing, the innermost and outermost tall ring-like protrusions 7 ₁ , 7 ₄ enter the corresponding innermost and outermost deep ring-shaped recessed grooves 8 ₁ , 8 ₄ , and the two rings in between The projections 7 ₂ and 7 ₃ and the ring-shaped recessed grooves 8 ₂ and 8 ₃ are pushed in by the same method as the waterproof seal structure A.

Next, the fixing protrusions 5c ′ of the upper and lower cover members 5A and 5B are inserted into the engagement notches 8a ′ of the support members 8A and 8B, fixed by rotating a predetermined angle, and the decorative plate 9A is attached to these cover members 5A and 5B. , 9B is attached to complete the assembly. This assembled body was inserted leads 10 into the through hole 7 ₀ of the packing member 7, to secure the connector 11 provided at an end portion of the lead wire 10 each decoration plate 9A, in 9B.

According to a small device of this configuration, a pair of upper and lower first, second cover member 5A, 5B, 4 pieces of the ring-shaped projection and the ring-shaped recess groove provided in the seal unit 6 has a through-hole 7 of the connecting portion 7C ₀ 12 are arranged in a concentric circle at substantially equal intervals, so that the pair of upper and lower cover members 5A and 5B is waterproof and sealed with the seal unit 6 as the center as shown in FIG. A predetermined angle can be rotated.

  In this small apparatus 4, the upper and lower cover members can be rotated with each other using a pair of annular packings and support members. However, only one cover member may be rotated with one annular packing. .

I, 1: First member 1 ₁ , 1 ₂ , 1 ₃₁ , 1 ₃₂ , 3 ₃₃ , 3 ₃₄ : Recessed portion 1 ₁₁ , 1 ₁₂ , 2 ₁₁ , 2 ₂₂ , 2 ₃₁ , 2 ₃₂ , 3 ₁ , 3 ₂ 3 ₃ , 3 ₄ , 3 ₃₁ , 3 ₃₂ : protrusion
II, 2: second member 3, 3A, 3B, 3C: packing member 4: small device 5A: first cover member (first housing)
5B: 2nd cover member (2nd housing | casing)
5 ₁ , 5 ₂ , 5 ₃ , 5 ₄ : ring-shaped recessed groove 6: seal unit 7: packing member 7 ₁ , 7 ₂ , 7 ₃ , 7 ₄ : ring-shaped protrusion 7A: first annular packing 7B: second annular ring Packing 7A ₁ : First surface 7A ₂ : First back surface 7B ₁ : Second surface 7B ₂ : Second back surface 8: Support member 8 ₁ , 8 ₂ , 8 ₃ , 8 ₄ : Ring-shaped recessed groove 8A: First support Member 8B: 2nd support member 9A, 9B: Decorative plate 10: Lead wire 11: Connector A, A-1 to A-5, B, B-1 to B-3, C, C-1 to C-3: Waterproof seal structure L: eccentric distance L ₁ : first virtual perpendicular L ₂ : second virtual perpendicular

Claims (6)

A pair of first and second casings and a seal unit interposed between the first and second casings, and the casings are sandwiched between the first and second casings. In a device that presses and seals the body,
The seal unit has a packing member formed of an elastic member made of a pair of donut-shaped first and second annular packings connected by a connecting part having a through hole inside, and has a through hole inside and the first member. And a support member formed of a rigid member composed of a pair of first and second support members that support the second annular packing,
One or a plurality of ring-shaped projections on the first surface and the first back surface of the first annular packing and the second surface and the second back surface of the second annular packing, respectively, centering on the through hole of the connecting portion. Are arranged in concentric circles at approximately equal intervals,
Each of the first and second support members has one or a plurality of ring-shaped recesses into which the ring-shaped protrusions provided on the first back surface and the second surface are fitted to the front surface. Concentrically arranged at substantially equal intervals around the center,
The first and second housings are provided with ring-shaped recesses into which the respective ring-shaped protrusions provided on the first surface and the second surface are fitted on one surface,
A seal unit composed of the packing member and the support member is interposed between the first and second housings, and the ring-shaped projecting portion and the core portion of the ring-shaped recess portion facing each other are eccentric by a predetermined distance. The ring-shaped projecting portion having elasticity by pressing the packing member that supports the supporting member by the first and second housings and is fitted into the ring-shaped recessed portion and coupled to each other. Equipment.   The ring-shaped recess is formed by a recess hole or a V-shaped groove, and the ring-shaped protrusion is formed by a mountain-shaped protrusion that fits in the recess hole or the V-shaped groove. Item 1. The device according to Item 1.   The eccentric distance L between the virtual perpendicular passing through the apex of the ring-shaped protrusion and the virtual perpendicular passing through the center of the bottom of the ring-shaped recess facing the ring-shaped protrusion is an upper opening of the ring-shaped recess. 2. The device according to claim 1, wherein the width length of W is set within a range of 0 <L <3 / 4W, where W is W.   Three or more ring-shaped protrusions and ring-shaped recesses are arranged concentrically at a predetermined interval, and the innermost and outermost ring-shaped protrusions and ring-shaped recess grooves are between them. The device according to claim 1, wherein the device is formed in a fixed portion that prevents sliding movement of the packing member by changing the shape. The ring-shaped protrusion is formed taller than the ring-shaped protrusion.
The device according to claim 4, wherein the ring-shaped recessed groove is formed deeper than the ring-shaped recessed portion.   The device according to claim 1, wherein the first housing and the second housing are rotatable about the seal unit.

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