JP2576411B2 - Slow switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a delay switch in which an opening / closing contact mechanism is actuated when a predetermined time has elapsed after operation of an operating body.

[0002]

2. Description of the Related Art A conventional slow-moving switch is disclosed in Japanese Utility Model Publication No. 47-39590.
As described in Japanese Patent Application Laid-Open Publication No. H10-115, a structure is adopted in which a timer mechanism is mounted on a board that is housed and fixed in a switch case, and this board is housed in the case and fixed with screws.

Further, Japanese Patent Publication No. 53-31268 discloses a timepiece device comprising an inner and outer machine frame, a main shaft, and the like, which are assembled in a housing.

[0004]

The structure disclosed in Japanese Utility Model Publication No. 47-39590 has a large assembling space, and
There has been a problem that the entire switch becomes large, and it takes time and effort to assemble, and it is difficult to assemble with high accuracy.

[0005] The switch disclosed in Japanese Patent Publication No. 53-31268 is not a unit that is previously unitized and configured as a timer unit. Therefore, this device also requires an assembling space, and the entire switch becomes large. Also, assembling the timer part, setting and resetting mechanism is extremely complicated, it is troublesome, it requires skill, or it is difficult to assemble with high precision, and a desired operation as a timer cannot be obtained. Have problems.

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art, and provides a slow-moving switch which has a simple structure, is easy to assemble, can be provided at low cost, and can be made compact. The purpose is to do.

[0007]

SUMMARY OF THE INVENTION The present invention is directed to a box-shaped switch body having an opening and communicating with the opening, and having storage recesses at the center and both ends; a timer unit housed in the center storage recess of the body; A terminal disposed in the storage recess at each end of the main body; and a projection having an operating body fitting portion at an intermediate portion and a projection facing the terminal, the projection being disposed to cover the opening of the switch main body. A lid body for pressing a terminal by a portion; an operating body having a concave portion on the side facing the timer unit and provided on the opening side of the switch body together with the lid portion; a concave portion on the side facing the unit An operation body having: a first part disposed above the timer unit such that at least a part of the operation body is located in a recess of the operation body, and opened and closed in response to an operation of the operation body.
And a second opening / closing contact mechanism disposed on the bottom side of the central storage recess of the main body and located in proximity to the timer unit and operated by the timer unit.

[0008]

According to the present invention, the timer unit is housed in the housing recess at the center of the switch body, and the terminals are housed in the housing recesses at both ends. Since the timer unit is unitized, it is easy to assemble it into the switch body. A first switching contact mechanism is disposed on an upper side of the timer unit,
A second opening / closing contact mechanism operated by the timer unit is disposed on the bottom side of the timer unit. Then, an operation body having a recess on the timer unit side is disposed in the opening of the switch body together with the lid. At this time, the projection of the lid presses the terminal to prevent the terminal from floating, and to reliably regulate the position of the terminal in the storage recesses on both ends. Further, since at least a part of the first opening / closing contact mechanism is housed in the concave portion of the operating body, the first opening / closing contact mechanism can be made compact despite having the first and second opening / closing contact mechanisms.

In operation, the first opening / closing contact mechanism is opened / closed by the operating body, and the timer unit is operated.
The second open / close contact mechanism is operated by the timer unit with a delay of a predetermined time.

[0010]

An embodiment of the present invention will be described with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a case which is formed by connecting a box-shaped switch body 2 and a cover 3. The switch body 2 has storage recesses 4, 5, and 6 formed at the center and at both ends thereof so as to communicate with the opening. The timer unit 7 is stored in the storage recess 4, and the terminals 8 and 9 are stored in the storage recesses 5 and 6, for example, by dropping. The storage recess 4 at the center is formed deeper than the storage recesses 5 and 6 at both ends, and has a clearance enough to allow the timer unit 7 to be dropped and stored. The timer unit 7 accommodated in the accommodating recess 4 is allowed to move slightly in the order of a clearance, is restricted from moving in a direction along an opening crossing the dropping direction, and is positioned and held. That is,
In the present embodiment, as shown in FIG. 3, both sides of the main body 2 are provided with steps 10 and 10 at the boundaries between the storage recess 4 at the center and the storage recesses 5 and 6 at both ends. Concave grooves 11, 11 are formed between the parts 10, 10. Thus, the storage recess 4 at the center is formed wider than the storage recesses 5 and 6 at both ends.

Next, as shown in FIGS. 1 and 2, the lid 3 is connected to the upper surface of the main body 2 by a mounting bracket 12. An operating body fitting portion 13 opened at the upper surface is formed at an intermediate portion of the lid portion 3, and projecting portions fitted from the upper surface opening of the switch body 2 and pressing the terminals 8 and 9 are formed at the lower surfaces at both ends. 14 are formed. Further, as shown in FIG.
On both sides of the shaft 13, a shaft supporting groove 15 opened at the lower edge is formed.

Next, as shown in FIG. 3, the one terminal 8 is fitted along a terminal plate 16 formed in a substantially rectangular shape on a plane and along both sides 17 and 17 of the terminal plate 16. It is composed of a pair of combined lock pieces 18. The locking portion 19 of the locking piece 18 faces the electric wire connection portions 20 of the terminal plate 16, respectively.

As shown in FIG. 3, the terminals 9 are formed along a pair of terminal plates 21 and 22 formed in a substantially U-shape in plan view, and along side plates 23 of the terminal plates 21 and 22, respectively. It is constituted by the chain-like piece 24 fitted. The lock portions 25 of the lock pieces 24 face the electric wire connection portions 26 of the terminal plates 21 and 22, respectively.

As shown in FIG. 3, each terminal plate 16, 21, 22
The switch body 2 is housed in the storage recesses 5 and 6 at both ends by dropping, for example.
The terminal boards 21 and 22 are fitted and housed facing each other.
The upper edges of the terminal plates 16, 21, 21 correspond to the projections 14 of the lid pair 3.
, Thereby restricting the movement of the switch body 2 toward the opening side.

As shown in FIGS. 3 and 4, a first open / close contact mechanism is provided on one terminal plate 16 and extends horizontally from the upper edge of the terminal plate 16 above the storage recess 4 in the center. A support frame 27 for supporting the reversing mechanism is integrally formed. A concave pivotal support 28 bent in a substantially V-shape is provided on both side portions of the support frame 27.
The support pieces 30 formed on both sides of the mover 29 fitted to the support frame are swingably supported by the pivot 28.
At the lower end of the mover 29, a fixed contact piece 31 extending above the central storage recess 4 at the upper edge of the other first terminal plate 21 is provided.
The movable contact piece 32 is formed so as to come into contact with and separate from the movable contact piece 32. The fixed contact piece 31, the movable contact piece 32, and the reversing mechanism constitute a first switching contact mechanism. That is, the other end of the coil spring 33 fixed to the upper part of the
A support shaft 34 is locked below the pivotal support 28 of the support shaft 28.

As shown in FIGS. 1, 2 and 3, both ends of the support shaft 34 are provided with support recesses formed on both sides of the operating body 35.
The shaft 37, which is locked to the handle 36 and protrudes on both sides of the operation body 35, is swingably supported by the shaft supporting grooves 15 formed on both sides of the fitting portion 13 of the lid body 3. The operating body 35 has a concave portion on the side facing the timer unit 7, and accommodates at least a part of the first switching contact mechanism in the concave portion. In this embodiment, the mover 29 and the coil spring 33 are housed.

As shown in FIG. 1, a fixing contact piece 38 disposed on the bottom of one side of the central storage recess 4 extends below the second terminal plate 22. As shown in FIG. . And
On one side of the one terminal plate 16, a movable contact piece 39 formed by an elastic piece which is brought into contact with and separated from the upper portion of the fixed contact piece 38 is welded. The fixed contact piece 38 and the movable contact piece 39 constitute a second opening / closing contact mechanism 40 serving as a timer opening / closing contact. Thus, the second switching contact mechanism 40 is disposed at the bottom of the central storage recess 4.

Next, as shown in FIG. 5, the timer unit 7 is constructed by incorporating a timer section (speed control section) in a timer case 41. The timer case 41 is formed in a box shape with both sides opened, and a support plate portion 42 for partitioning left and right is integrally formed at the center of the timer case 41, and both sides are formed by lid plates 43 and 44. It is designed to be sealed. The lower part of one side of this timer case 41 is the second
A concave step portion 45 in which the switching contact mechanism 40 is disposed is formed. The timer case 41 is dropped into the timer unit housing recess 4 in the center of the main body 2 from the opening edge on the upper surface with the grooves 11, 11 formed by the pair of steps 10, 10 serving as a guide.

The supporting frame is provided on the upper surface of the timer case 41.
The protruding piece 46 cut and raised from 27 presses against and contacts the timer
The movement of the screw 41 in the dropping direction is prevented.

Next, the timer section of the timer unit 7 is 1
A ratchet ratchet wheel 49 rotatably provided on a pinion 48 and a first gear 50 which is rotated by being coupled only in one direction of the ratchet ratchet wheel 49, and the main shaft 51 of the ratchet ratchet wheel 49 has one end. Of the cover plate 43 protrudes outward. The first gear
50 is urged by a leaf spring 52 in the direction of engagement with the ratchet ratchet 49.

Next, the second gear, the second gear 54, the third gear 55, the third gear 56, the fourth gear
The pinion 57, the fourth gear 58, the fifth pinion 59 and the escape wheel 60 are alternately rotatably mounted on two parallel shafts, and a ceiling 62 is mounted on an ankle shaft 61 which engages the escape wheel 60. ing.

As shown in FIG. 1, the timer unit 7 has a set / reset mechanism 63 and a timer case 41.
Set-reset mechanism located on the outer surface side of one of the lid plates 43
A first cam 64 of 63 is mounted on the main shaft 51. The first cam 64 has an operating part protruding to one side of the operating part 35.
An engagement edge 66 and a cam edge 67 and a second cam 68 engaged with the
And an engagement concave edge 69 that engages with
Is protruding. The second cam 68 has an operating cam edge.
A base end of an opening / closing lever 74 engaged with the operating cam edge 71 is pivotally attached to a shaft portion 75 protruding from an outer surface of one of the cover plates 43 of the timer case 41. An engagement portion 76 is formed on the 74 to push the movable contact piece 39 of the timer switch mechanism 40 away from the fixed contact piece 38.

The timer unit 7 has a coiled timer spring 77. Both ends of the spring 77 are locked by the opening / closing lever 74 and the spring locking projection 70 of the first cam 64. I have.

As described above, the timer unit 7 includes the timer section (governing section), the set / reset mechanism 63, the opening / closing lever 74 for operating the second opening / closing contact mechanism 40, and the spring 77. Activated, the second switching contact mechanism 40
It has a function to control the opening and closing of.

Next, the operation of this embodiment will be described. When assembling, the timer case 41 of the timer unit 7 is dropped and stored in the storage recess 4 in the center of the switch body 2 of the case 1 with the steps 10, 10 forming the concave grooves 11, 11 serving as a guide. The timer case 41 is positioned and held with its movement in a direction along an opening surface intersecting with the direction of dropping into the storage recess 4 being restricted within a clearance range capable of being dropped into the storage recess 4. A set / reset mechanism 63 is disposed between the one side cover plate 43 of the timer case 41 and the inner surface of the side wall of the timer unit housing recess 4.

Terminals 8 and 9 are stored in storage recesses 5 and 6 at both ends of the switch body 2. Thereby, in this embodiment, the support frame 27 extending from the terminal plate 16 of the one terminal 8 is provided.
The protruding piece 46 cut and raised from above presses the timer unit 7. Next, the lid 3 and the operating body 35 are connected to the upper surface of the switch body 2. As a result, the protrusion 14 of the lid 3 presses the upper edges of the terminal plates 16, 21, and 22 of both terminals 8, 9, and regulates the positions of the terminal plates 16, 21, and 22. Further, since the timer unit 7 is held by the pressing force of the lid 3 via the terminal plate 16, the movement in the dropping direction is restricted. In the present embodiment, since the projections 14 of the lid 3 are formed on the lower surfaces of both ends, the projections 14 are fitted to the inner circumferences of the storage recesses 5 and 6 to perform a guiding action, and are also used for position regulation. Works. Further, since at least a part of the first opening / closing contact mechanism is housed in the recess of the operating body 35, the first and second contact mechanisms are provided.
Despite having the open / close contact mechanism described above, the overall size is reduced.

Next, when the operating body 35 is swung clockwise from the state shown by the solid line in FIG.
The shaft 34 engaged with the shaft moves. Therefore, the spring
33 moves beyond the dead center position, the mover 29 is held upside down around the support piece 30, the movable contact piece 32 comes into contact with the fixed contact piece 31 and the first switching contact mechanism is closed.

When the operating body 35 is swung, the operating portion 65 pushes the engaging edge 66 of the first cam 64 of the set / reset mechanism 63, and the first cam 64 turns against the spring 77. 1 (counterclockwise direction in FIG. 1) to accumulate the spring 77. Also, the first
The opening / closing lever 74 is pushed by the cam edge 67 of the cam 64, and the movable contact piece 39 of the second opening / closing contact mechanism 40 is pushed against the elastic force and contacts the fixed contact piece 38 to close. To achieve. Further, in this state, the second cam 68 also engages with the first cam 64, and this cam edge 71
Is also held in a state where the opening / closing lever 74 is pushed. Further, when the first cam 64 rotates, the ratchet ratchet 49 also rotates, but the first gear 50 does not rotate.

When the operating body 35 is pushed in this state, the operating body 35 changes from a chain line state in FIG. 1 to a solid line state, the movable element 29 is rotated by reversing the spring 33, and the movable contact piece 32 is fixedly connected. It is separated from the piece 31 and is opened.

When the operating body 35 is rotated, the operating portion 65 is separated from the engaging edge 66 of the first cam 64, and the first cam 64 is rotated clockwise in FIG. This first cam
A ratchet ratchet 49 coupled to the gear 64 via the main shaft 51 rotates the first gear 50. As a result, the second gear 53, the second gear 54, the third gear 55, the third gear 56, the fourth gear 57, the fourth gear
58, fifth pinion 59 is replaced with escape wheel 60, ankle shaft 61, and ceiling 62
To make the meshing rotation. When the first cam 64 rotates for a predetermined time, the second cam 68 engaged with the first cam 64 is rotated, and the cam edge 71 of the second cam 68 opens and closes.
The opening / closing lever 74 is rotated by the spring 77 (clockwise in FIG. 1). By the rotation of the opening / closing lever 74, a separating force for separating the movable contact piece 39 from the fixed contact piece 38 is applied, and the second opening / closing contact mechanism 40 is opened when a predetermined time has elapsed after the operation of the operating body 35.

[0031]

As described above in detail, according to the present invention, the timer unit is housed in the center housing recess of the switch body, terminals are provided in the housing recesses at both ends, and the protrusion facing the terminal is provided. By covering the opening of the switch body with the lid having, the assembling of the timer unit to the switch body is easy, and the terminal is pressed into the recess by pressing the terminal with the projection of the lid. Can be regulated. Also,
A concave portion is formed on a surface of the operation body provided in the opening together with the lid portion facing the timer unit, and a first opening / closing contact mechanism that opens and closes in response to operation of the operation body is at least partially provided on the operation body. Since the space is effectively utilized by being housed in the recess and the second opening / closing contact mechanism operated by the timer unit is disposed at the bottom of the central housing recess, the first and second opening / closing contacts are provided. The components can be easily arranged while maintaining a sufficient insulation distance between the mechanisms, and compactness can be achieved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view showing an embodiment of the present invention.

FIG. 2 is a partially cutaway front view showing a pivot portion of the operation body.

FIG. 3 is a plan view of the main body.

FIG. 4 is a longitudinal sectional side view showing a pivot portion of the operation body.

FIG. 5 is a vertical side view of the same timer unit.

[Explanation of symbols]

2: Switch body, 3: Lid, 4, 5, 6: recess, 7: Timer unit, 8, 9, terminal, 31 ...
Fixed contact piece of the first switching contact mechanism, 32: movable contact piece of the first switching contact mechanism, 35: operating body, 40: second switching contact mechanism.

Continuation of front page (56) References JP-A-55-46473 (JP, A) JP-A-56-82519 (JP, A) JP-A-59-226433 (JP, A) JP-A-59-226435 (JP) JP-A-6-251655 (JP, A) JP-A 55-11066 (JP, U) JP-A 41-5455 (JP, Y1) JP-A 47-39590 (JP, Y1) JP-A 51-36223 (JP, Y1) Jiko 55-13866 (JP, Y2) Jiko 57-14337 (JP, Y2) JP-B 53-31268 (JP, B2)

Claims (1)

(57) [Claims] 1. A box-shaped switch body communicating with the opening, the opening and having a recess at the center and both ends, a timer unit housed in the center housing recess of the body, and housing at both ends of the body. A terminal disposed in the concave portion; a lid having an operation body fitting portion at an intermediate portion and having a protrusion facing the terminal, disposed to cover the opening of the switch body, and pressing the terminal by the protrusion. An operating body having a recess on the side facing the timer unit and provided on the opening side of the switch body together with the lid; at least a part of the upper part of the timer unit is in the recess of the operating body A first opening / closing contact mechanism that is disposed so as to be positioned and that opens and closes in response to the operation of the operating body; and is disposed near the timer unit on the bottom side of the central storage recess of the main body, and is operated by the timer unit. Second switching contactor Lagged switch, characterized in that it comprises a; If.