WO2012071789A1

WO2012071789A1 - Control device

Info

Publication number: WO2012071789A1
Application number: PCT/CN2011/001983
Authority: WO
Inventors: 张楠; 水江孝仁
Original assignee: 欧姆龙株式会社
Priority date: 2010-11-30
Filing date: 2011-11-29
Publication date: 2012-06-07
Also published as: CN201995255U

Abstract

A control device comprises: a body housing, which is used for accommodating control components of the control device, and is a box which one end is open; a panel housing, which has a panel portion which comprises an operation interface which is faced to manipulators and is able to be operated by manipulators and a panel reverse surface opposite to the operation interface, and a bulge portion which is extruded to a direction far from the panel portion from the panel reverse surface of the panel portion and integratively formed with the panel portion, and is accommodated in the open end of the body housing, the outer peripheral wall surface of the bugle portion being placed opposite to the inner peripheral wall surface of the open end of the body housing; and an elasticity and deformability sealing ring, which is compressed by the outer peripheral wall surface of the bugle portion of the panel housing and the inner peripheral wall surface of the open end of the body housing, so as to seal between the body housing and the panel housing.

Description

Description book control device

The present invention relates to a control device, and in particular to a control device having a seal ring between a panel housing and a body housing. Background technique

The control device such as the temperature controller, the timer and the counter comprises a panel outer casing for accommodating the control member of the control device, and a main body casing, wherein the control member is a working member of the control device, that is, the control member realizes the temperature controller and the timing Controls such as timers and counters for temperature control, timing, counting, etc. The main body casing has a box shape with one end open, and the panel portion of the panel outer casing has an operation interface facing the operator and can be operated by an operator, and the opposite side of the operation panel is provided with a protrusion for an elastically deformable sealing ring such as a rubber ring. section. The protruding portion is formed integrally with the panel portion. A fixing member that fixes the control member is provided on the protruding portion.

In a conventional control device such as a temperature controller, a timer, and a counter, when a control device is assembled, a panel housing to which a control member is attached and a seal ring is placed to insert the control member from the open end of the main body casing into the main body casing The manner is assembled such that the control member is housed in the body casing. Here, the seal ring is used to form a seal at the joint between the panel outer casing and the main body casing to prevent foreign matter such as dust or water from entering the inside of the control device from the joint between the panel outer casing and the main body casing. Herein, the control member to which the control member is fixed and the panel casing in which the seal ring is placed is inserted into and removed from the open end of the main body casing is referred to as a mounting direction. A restriction member such as a snap fit is provided on the main body casing and the panel outer casing or the control member for restricting movement of the panel outer casing to which the control member is fixed and the sealing ring is placed in the mounting direction with respect to the main body casing. The sealing ring is compressed by the opposite side of the panel of the panel portion of the panel housing and the inner wall surface of the main body housing opposite to the opposite side of the panel, and the sealing ring is acted upon by the limiting member such as a snap fit provided on the main body housing and the panel housing or the control member The compression state is maintained to achieve a seal between the main body casing and the panel outer casing.

In the existing control device, since the seal ring is compressed by the panel back surface of the panel portion of the panel outer casing and the inner wall surface of the main body casing opposite to the opposite surface of the panel, it is necessary to provide a certain number of cards on the main body casing and the panel outer casing or the control member. A restraining member such as a snap fit is used to maintain the compression state of the seal ring. Further, in order to achieve an appropriate sealing effect, the fitting precision between the restricting members such as the snap fit provided on the main body casing and the panel outer casing or the control member is required to be high.

1

Confirmation Summary of the invention

The present invention has been made in view of the above problems, and provides a control device capable of reducing the number of restriction members such as a snap fit provided on a main body casing and a panel outer casing or a control member, and reducing the control on the main body casing and the panel casing or The fitting precision between the restraining members such as the snap fit provided on the member.

The invention provides a control device comprising: a main body casing for accommodating a control member of a control device, the main body casing being a box shape with one end open; a panel outer casing having a panel portion and a protruding portion, the panel portion having a facing operation And an operation interface that can be operated by the operator and a reverse side of the panel opposite to the operation interface, the protruding portion protrudes from the opposite direction of the panel of the panel portion away from the panel portion, the protruding portion is integrally formed with the panel portion, and the protruding portion is accommodated in the main body housing In the open end, the outer peripheral wall surface of the protruding portion is opposed to the inner peripheral wall surface of the open end of the main body casing; and the elastically deformable sealing ring is compressed by the outer peripheral wall surface of the protruding portion of the panel outer casing and the inner peripheral wall surface of the open end of the main body casing Thereby forming a seal between the main body casing and the panel outer casing.

Preferably, the sealing ring comprises: a protruding portion contact surface contacting the outer peripheral wall surface of the protruding portion of the panel outer casing; a opposite surface opposite to the panel opposite to the panel outer surface of the panel outer casing; and a connecting protruding portion contacting surface and the opposite surface of the panel opposite surface A curved surface that protrudes toward the outside of the seal.

Preferably, the contour of the cross section of the sealing ring comprises: a first straight line segment corresponding to the protruding portion contact surface; a second straight line segment corresponding to the opposite surface of the opposite surface of the panel; and the first straight line segment and the second straight line segment are mutually Two straight line segments intersecting at right angles, one end of each of the first straight line segment and the second straight line segment being an intersection point, and an outward convex corresponding to the other end of the first straight line segment and the second straight line segment corresponding to the curved surface The curve segment is obtained, and the curvature of the portion of the curved segment near the second straight segment is greater than the curvature of the portion of the curved segment near the first straight segment.

Preferably, the portion of the curved segment adjacent to the second straight segment protrudes away from the first straight segment with respect to an imaginary straight line passing through the other end of the second straight segment and parallel to the first straight segment.

Preferably, the outer peripheral wall surface of the protruding portion of the panel outer casing is formed with a convex protrusion that protrudes to the outside, and the convex surface, the rear surface of the panel of the panel portion of the panel outer casing, and the outer peripheral wall surface of the protruding portion of the panel outer casing form a seal ring for accommodating the sealing ring. groove.

Preferably, the groove width of the seal receiving groove is larger than the length of the first straight line segment.

Preferably, when viewed from the side where the protruding portion of the panel outer casing is located, the outline of the outer peripheral wall of the protruding portion and the outline of the outer peripheral wall of the panel portion are formed in an annular shape, and the outline of the outer peripheral wall of the protruding portion is formed into a ring shape. Internal loop.

Preferably, the control device of the present invention is a temperature controller, a timer and a counter. DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic exploded perspective view of a control device 1 of the present invention including a main body casing 2, a panel outer casing 3, and a seal ring 4.

Fig. 2 is a schematic side cross-sectional view showing the control device 1 of the present invention including the main body casing 2, the panel outer casing 3, and the seal ring 4 in a state before assembly.

Figure 3 is an enlarged view of a portion of the broken line frame A in Figure 2.

Fig. 4 is a schematic side cross-sectional view showing the control device 1 of the present invention including the main body casing 2, the panel outer casing 3, and the seal ring 4 in an assembled state.

Fig. 5 is an enlarged view of a portion of the broken line frame B in Fig. 4. detailed description

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings, and it should be noted that the present invention is not limited to the specific embodiments described below.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic exploded perspective view of a control device 1 of the present invention including a main body casing 2, a panel outer casing 3, and a seal ring 4. Fig. 2 is a schematic side cross-sectional view showing the control device 1 of the present invention including the main body casing 2, the panel outer casing 3, and the seal ring 4 in a state before assembly. Fig. 4 is a schematic side cross-sectional view showing the control device 1 of the present invention including the main body casing 2, the panel outer casing 3, and the seal ring 4 in an assembled state.

As shown in Figs. 1-5, the control device 1 includes a main body casing 2, a panel outer casing 3, and an elastically deformable sealing ring 4. The control device 1 also includes a control member (not shown). The main body casing 2 is for accommodating a control member of the control device 1. The main body casing 2 is in the shape of a box having an open end. The panel housing 3 has a panel portion 31 and a protruding portion 32. The panel portion 31 has an operation interface 311 facing the operator and capable of being operated by an operator, and a panel opposite surface 312 opposite to the operation interface 311. The protruding portion 32 protrudes from the panel back surface 312 of the panel portion 31 in a direction away from the panel portion 31. The protruding portion 32 is formed integrally with the panel portion 31. The protruding portion 32 is housed in the open end 21 of the main body casing 2. The outer peripheral wall surface 321 of the protruding portion 32 is opposed to the inner peripheral wall surface 211 of the open end 21 of the main body casing 2. As shown in FIGS. 4 and 5, the seal ring 4 is compressed by the outer peripheral wall surface 321 of the protruding portion 32 of the panel outer casing 3 and the inner peripheral wall surface 211 of the open end 21 of the main body casing 2, thereby forming between the main body casing 2 and the panel outer casing 3. seal.

Further, as shown in FIGS. 1-5, the seal ring 4 includes: a protruding portion contact surface 41 that is in contact with the outer peripheral wall surface 321 of the protruding portion 32 of the panel outer casing 3; and a reverse surface of the panel opposite to the panel reverse surface 312 of the panel outer casing 3. The opposite surface 42; and the curved surface protruding to the outside of the sealing ring 4 connecting the protruding portion contact surface 41 and the panel opposite surface 42 Further, as shown in FIG. 3, the outline of the cross section of the seal ring 4 includes: a first straight line segment 51 corresponding to the protruding portion contact surface 41; and a second straight line portion 52 corresponding to the opposite surface opposite surface 42 of the panel And the first straight line segment 51 and the second straight line segment 52 are two straight line segments that intersect each other at right angles, and one end of each of the first straight line segment 51 and the second straight line segment 52 is an intersection; and corresponding to the curved surface 43 An outwardly convex curved section 53 connecting the other ends of the first straight line segment 51 and the second straight line segment 52 is connected. The curvature of the portion of the curved segment 53 near the second straight segment 52 is greater than the curvature of the portion of the curved segment 53 near the first straight segment 51.

Further, the portion of the curved segment 53 near the second straight segment 52 is away from the first straight with respect to an imaginary straight line (broken line L in FIG. 3) passing through the other end of the second straight segment 52 and parallel to the first straight segment 51. The direction of the line segment 51 is convex. The seal ring 4 thus constructed can be such that the deformation of the vicinity of the open end 21 of the main body casing 2 can be prevented even if the wall thickness of the main body casing 2 is thin.

Preferably, the outer peripheral wall surface 321 of the protruding portion 32 of the panel outer casing 3 is formed with a projection 322 that protrudes outward, the projection 322, the panel back surface 312 of the panel portion 31 of the panel outer casing 3, and the protruding portion 32 of the panel outer casing 3. The outer peripheral wall surface 321 forms a seal ring accommodating groove 33 that accommodates the seal ring 4.

Further, the groove width of the seal ring receiving groove 33 is larger than the length of the first straight line segment 51.

Further, when viewed from the side where the protruding portion 32 of the panel outer casing 3 is located, the outline of the outer peripheral wall of the protruding portion 32 and the outline of the outer peripheral wall of the panel portion 31 are formed in an annular shape, and the outline of the outer peripheral wall of the protruding portion 32 is formed. The line forms an annular inner loop.

The assembly process of the control device 1 according to the above embodiment of the present invention will be described below.

The protruding portion 32 has a fixing member 323 (shown in FIG. 1) for fixing the control member of the control device 1, and when the control device 1 is mounted, the control member of the control device 1 is fixed by the fixing member 323, and the sealing ring 4 is placed on the sealing ring The inside of the accommodating groove 33 is such that the protruding portion contact surface 41 comes into contact with the outer peripheral wall surface 321 of the protruding portion 32 of the panel outer casing 3, and the opposite surface opposite surface 42 of the panel faces the panel reverse surface 312 of the panel outer casing 3. At this time, the curved surface 43 is inclined from the outer peripheral wall surface 321 of the protruding portion 32 of the panel outer casing 3 toward the panel back surface 312 of the panel outer casing 3 with respect to the mounting direction. When the control device 1 is mounted, the panel housing 3 to which the control member is fixed and the sealing ring 4 is placed is mounted with respect to the main body housing 2 in such a manner that the control member is inserted into the main body housing 2 from the open end 21 of the main body housing 2. When the inner peripheral wall surface 211 of the open end 21 of the main body casing 2 comes into contact with the curved surface 43 of the rubber ring 4, the inner peripheral wall surface 211 of the open end 21 of the main body casing 2 sequentially compresses the curved surface 43 of the rubber ring 4 opposite to the opposite side of the panel. The portion of the face 42 (corresponding to the portion of the curved segment 53 that is close to the first straight segment 51). When the control device 1 is installed, the portion of the curved surface 43 close to the opposite surface 42 of the panel is deformed to substantially coincide with the inner peripheral wall surface 211 of the open end 21 of the main body casing 2, that is, the sealing ring 4 is covered by the panel outer casing 3. The outer peripheral wall surface 321 of the protruding portion 32 and the open end 21 of the main body casing 2 The inner peripheral wall surface 211 is compressed to achieve a seal between the main body casing 2 and the panel outer casing 3. The projection 322 serves to limit the deformation in the mounting direction when the sealing ring 4 is compressed within a certain range.

A preferred embodiment of the present invention has been described above with reference to the accompanying drawings. It should be noted that the present invention is not limited to the above embodiments, and other variations of the present invention are possible. For example, the shape of the seal ring is specifically described above with reference to the drawings, and the seal ring of the present invention is not limited to the above-described shape, and the seal ring of the present invention may be an outer peripheral wall surface and a main body case capable of realizing a seal ring by a protruding portion of the panel outer casing. Other shapes of the inner peripheral wall surface of the open end are compressed. For example, the outline of the cross section may also be a right triangle or a right angle trapezoid.

Since the seal ring of the control device according to the present invention is compressed by the outer peripheral wall surface of the protruding portion of the panel outer casing and the inner peripheral wall surface of the open end of the main body casing, the snap fit provided on the main body casing and the panel outer casing or the control member can be reduced. The number of members is limited, and the fitting accuracy requirement between the restricting members such as the snap fit provided on the main body casing and the panel outer casing or the control member is reduced. The sealing effect of the control device according to the present invention can meet the waterproof and dustproof requirements of the IP66 established by the International Electrotechnical Commission (IEC).

The invention is not limited to the above embodiments. Those skilled in the art will appreciate that the above-described embodiments are merely exemplary. This embodiment is not limited. Many other variations and modifications can be made by those skilled in the art without departing from the scope of the appended claims.

Claims

Claim

A control device, comprising:

a main body casing for accommodating a control member of the control device, the main body casing being in the shape of a box having an open end;

a panel housing having a panel portion having an operation interface facing the operator and operable by an operator and a panel opposite surface opposite the operation interface, the panel portion having the protruding portion from the panel a portion of the panel protrudes away from a direction away from the panel portion, the protruding portion being integrally formed with the panel portion, the protruding portion being received in an open end of the main body casing, a peripheral wall surface of the protruding portion being The inner peripheral wall faces of the open ends of the main body casing are opposite; and

An elastically deformable sealing ring compressed by an outer peripheral wall surface of the protruding portion of the panel outer casing and an inner peripheral wall surface of the open end of the main body casing to form a seal between the main body casing and the panel outer casing .

2. The control device according to claim 1, wherein the sealing ring comprises:

a protruding portion contact surface in contact with an outer peripheral wall surface of the protruding portion of the panel outer casing;

Opposite to the opposite side of the panel opposite the panel of the panel housing; and

A curved surface that protrudes toward the outside of the seal ring is connected to the protruding portion contact surface and the opposite surface of the panel.

3. The control device according to claim 2, wherein the outline of the cross section of the seal ring comprises: a first straight line segment corresponding to the contact surface of the protruding portion;

a second straight line segment corresponding to the opposite side of the opposite side of the panel; and the first straight line segment and the second straight line segment are two straight line segments that intersect each other at right angles, the first straight line segment and the second straight line segment The respective ends of the straight segments are intersections, and

a curve segment corresponding to the curved surface that connects the other end of the first straight segment and the second straight segment to the outside, the curvature of the portion of the curved segment near the second straight segment Greater than the curvature of the portion of the curved segment that is adjacent to the first straight segment.

4. The control device according to claim 3, wherein a portion of the curved segment adjacent to the second straight segment is away from the first straight segment with respect to an imaginary straight line parallel to the first straight segment The direction is convex.

The control device according to claim 4, wherein a peripheral wall of the protruding portion of the panel outer casing The surface is formed with a protrusion that protrudes to the outside, the protrusion, the panel back surface of the panel portion of the panel housing, and the outer peripheral wall surface of the protruding portion of the panel housing form a seal ring receiving groove for accommodating the sealing ring .

The control device according to claim 5, wherein a groove width of the seal ring accommodating groove is larger than a length of the first straight line segment.

7. The control device according to claim 1, wherein an outline of an outer peripheral wall of the protruding portion and a contour of an outer peripheral wall of the panel portion when viewed from a side of the protruding portion of the panel outer casing The wire is formed in an annular shape, and an outline of the outer peripheral wall of the protruding portion forms the annular inner loop.

8. The control device according to claim 1, wherein the control device is a temperature controller, a timer, and a counter.