JP4371094B2 - Time switch - Google Patents

Description

  The present invention relates to a time switch for turning on / off a power supply to a load by opening / closing a built-in contact at a desired set time.

  Conventionally, a dial is driven to rotate at a constant speed by a motor (for example, one round in 24 hours), and a setting member is provided on a peripheral portion of the dial in accordance with a desired setting time. By detecting this, a time switch has been provided in which power supply from a commercial power supply to a load is turned on / off at a desired set time (see, for example, Patent Document 1).

  FIG. 13 shows an example of a conventional time switch. In this conventional example, an external power supply (commercial AC power supply) is connected to an external power supply connection portion 101 formed of a pair of screw terminals provided at the lower front surface of the vessel body 100 and provided adjacent to the external power supply connection portion 101. The load power supply line is connected to the load connection portion 102 composed of a pair of screw terminals, and one screw terminal of the external power supply connection portion 101 and the load connection portion 102 is connected to each other via the conductive rod 103, and the other screw Terminals are connected to the switch mechanism 105 by lead wires 104 and 104, respectively. In addition, a dial 106 formed in a flat cylindrical shape is pivotally supported at the center of the front surface of the body 100 so as to be rotatable. However, the dial cover 106 a provided at the center of the front surface of the dial 106 is fixed to the body 100 and does not rotate together with the dial 106. In addition, a large number of grooves 106b are provided in the circumferential portion of the dial 106 at equal intervals along the circumferential direction, and the setting element 107 is detachably attached to the grooves 106b. The setting element 107 includes an input setting element 107A for closing the power supply path to the load and a setting element 107B for cutting to open the power supply path to the load, and the positions of the claw pieces 107a are different from each other. .

  Inside the body 100, a motor 108 that receives a power supply from an external power source via an external power source connection unit 101 and operates at a constant speed and a number of gears are combined to transmit the rotation of the motor 108 to the dial 106. Thus, the timer mechanism 109 for rotating the dial 106 at a constant speed (one turn in 24 hours) and the switch mechanism 105 are housed. The switch mechanism 105 includes a pair of contact springs 112 and 113 provided with contacts 110 and 111 in the vicinity of the tip, a cam shaft 114 supported by the vessel body 100, and a shaft that is rotatable around the cam shaft 114, respectively. The first and second cams 115 and 116 that are supported and are in radial contact with the pair of contact springs 112 and 113, respectively, are also rotatably supported around the cam shaft 114 and move circumferentially together with the dial 106. It includes a pair of detection cams (not shown) that come into contact with and separate from the claw pieces 107a of the input setting element 107A and the cutting setting element 107B.

Thus, a scale for displaying the time of 24 hours is written on the front surface of the dial 106, and an input setting element 107A is attached at a position corresponding to the start time of power supply to the load, and the power supply stop time to the load is set. Is attached to the position corresponding to, and the dial 106 is manually turned to adjust the current time to the mark 106c on the front surface of the dial cover 106a fixed to the body 100. Setting is complete. Then, as time elapses, the dial 106 rotates, and when the input setting element 107A attached to the dial 106 reaches the position of the mark 106c on the dial cover 106a, the claw piece 107a of the input setting element 107A becomes one of the claw pieces 107a. The detection cam is rotated around the cam shaft 114 in contact with the detection cam. The detection cam and the first and second cams 114 and 115 are connected, and when the detection cam rotates, the first and second cams 114 and 115 also rotate, and one contact spring 113. Is pushed by the second cam 115 and bent toward the other contact spring 112. As a result, the contacts 110 and 111 provided near the tips of the pair of contact springs 112 and 113 come into contact with each other to supply power. The road is closed. When the dial 106 further rotates and the cutting setting element 107B attached to the dial 106 reaches the position of the mark 106c on the dial cover 106a, the claw piece 107a of the cutting setting element 107B contacts the other detection cam. The detection cam is rotated around the cam shaft 114 in contact therewith. As a result, the contact spring 113 pushed by the second cam 115 returns to a direction away from the other contact spring 112, and as a result, the contacts 110 and 111 are separated to open the power supply path.
JP-A 63-29427

  By the way, in the conventional example, since the front face of the dial 106 is flat, it is difficult to operate the dial 106 when setting the current time.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a time switch with improved dial operability.

In order to achieve the above object, the invention of claim 1 is directed to an external power supply connection portion that is electrically connected to an external power supply, a load connection portion that is electrically connected to a load, and a load from the external power supply connection portion. A conductor that forms a power supply path to the connection part, a contact part that is electrically connected to the conductor to open and close the power supply path, and a motor that operates by receiving power supply from an external power supply via the external power supply connection part A timer mechanism that is driven by a motor to measure time, a setting unit that sets times for starting and stopping power supply to the load, and a power supply start time or power supply stop set by the setting unit A switch mechanism that drives the contact portion to close or open the power feeding path when the time and the current time measured by the timer mechanism portion coincide with each other, and a device that is formed in a substantially box shape and accommodates the respective portions Body, and the timer mechanism is A dial that is rotatably provided on the surface, and a setting member as setting means is detachably attached to the peripheral portion, and a gear mechanism that transmits the rotation of the motor to the dial by a plurality of gears. A pair of contact springs each provided with a contact that constitutes a contact portion, and a contact set by driving the contact spring when a setting element attached to the dial reaches a predetermined position corresponding to the power supply start time or power supply stop time With a cam mechanism that contacts or separates, and a protrusion that protrudes forward from the front surface of the body is provided at the approximate center of the dial, and the dial is cylindrical and the time display scale is on the front peripheral portion. The protrusion has a ring-like shape that surrounds the protrusion, and a plurality of attachment grooves provided at equal intervals along the circumferential direction. Scale An attachment piece that fits into the attachment groove of the attachment portion, and an opposing piece that opposes the peripheral surface of the protrusion, and is arranged along the attachment direction of the setting member on the peripheral surface of the protrusion The fitting grooves are provided at equal intervals over the entire circumference, and the protrusions that fit into the fitting grooves are provided on the facing pieces of the setting element .

According to a second aspect of the present invention, in the first aspect of the present invention, the predetermined position is a position indicating a current time, and is set above a central dial in the horizontal direction on the front surface of the body.

According to a third aspect of the present invention, in the first or second aspect of the present invention, a plurality of setting member storage portions for storing unused setting members are provided around the dial on the front surface of the body at predetermined intervals. It is characterized by that.

According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, the transparent door attached to the body is rotatable between a position covering the front of the body and a position opening the front of the body. Provided, and a pivotal fulcrum of the door is provided on a side surface of the body.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the door has a concave bearing portion in which a protruding shaft portion provided on the side surface of the container body is detachably fitted.

According to a sixth aspect of the present invention, in the fourth or fifth aspect of the present invention, when the door is in a position covering the front of the container, the protrusions covering both side surfaces along the opening / closing direction of the door project forward from the front of the container. It is characterized by that.

According to the first aspect of the present invention, since the protrusion that protrudes forward from the front surface of the container is provided at the approximate center of the dial, the dial can be rotated by gripping the protrusion and the operability of the dial is improved. To do. Moreover, it becomes easy to match the indicating piece of the setting element with the scale on the front surface of the protruding portion by fitting the protruding portion into the fitting groove provided on the peripheral surface of the protruding portion of the dial.

According to the invention of claim 2 , since the display position of the current time is at a position directly above the dial on the front of the body, it is easy to check the time.

According to the third aspect of the present invention, since there is a space between the plurality of setting member storage portions, the setting member can be easily taken out from the setting member storage portion by picking it with a finger.

According to the invention of claim 4 , the opening angle of the door at the position where the front of the body is opened is larger than that when the door pivot point is on the front of the body. It becomes easy.

According to the fifth aspect of the present invention, the door can be easily attached to and detached from the container. Therefore, when the operation of the dial or setting by the setting member is frequently performed, the operation can be easily performed by removing the door from the container.

According to invention of Claim 6 , a door can be protected by the protrusion part of a container.

  Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. However, in the following description, unless otherwise specified, the vertical and horizontal directions are defined in FIG. 2A, the left side in FIG. 2C is defined as the front, and the right side is defined as the rear.

  In the present embodiment, an external power source connection unit 2 electrically connected to an external commercial AC power source, a load connection unit 3 to which a load is electrically connected, and the external power source connection unit 2 to the load connection unit 3 A conductor 4 that forms a power supply path; a contact portion that is electrically connected to the conductor 4 to open and close the power supply path; and a motor M that operates by receiving power supply from a commercial power supply via the external power supply connection section 2. , A timer mechanism unit 7 that is driven by the motor M to measure time, a setting unit that sets times for starting and stopping power supply to the load to the timer mechanism unit 7, and a power supply start time set by the setting unit Alternatively, when the power supply stop time and the current time measured by the timer mechanism unit 7 coincide with each other, the switch mechanism unit 6 that drives the contact point to close or open the power supply path, and is formed in a substantially box shape and each of the above parts Is provided.

  The container 1 has a substantially rectangular parallelepiped shape, and includes a body 10 and a cover 11 made of a synthetic resin molded product having insulating properties. The body 10 is formed in a substantially rectangular box shape with an open rear surface, and the cover 11 is formed in a substantially rectangular box shape with an open front surface, and the body 10 and the cover 11 are attached to each other with an assembly screw 1b so that the opening surfaces of each other face each other. The container 1 is assembled by joining (see FIG. 3A). Moreover, the groove | channel 10a, 11a is formed in the center of the lower surface of the body 10 and the cover 11, and when the container 1 is assembled, the substantially rectangular window hole 1a is formed by these pair of groove | channels 10a, 11a, As will be described later, the insertion port 14a of the load connecting portion 3 is exposed to the outside through the window hole 1a. Here, a middle body 12 made of a synthetic resin molded product is accommodated in the container body 1, and the inside of the container body 1 is divided into a storage space on the body 10 side and a storage space on the cover 11 side by the middle body 12. Has been.

  As shown in FIG. 3, the middle body 12 is formed in a box shape that opens forward (downward in FIG. 3) and has a half on the lower side as a raised bottom, and is attached to the body 10 by a mounting screw 12 c. The motor M is housed and fixed on the back side of the portion. The shaft (not shown) of the motor M is disposed in the storage space on the body 10 side through a through hole 12a that penetrates the middle body 12 in the front-rear direction. Further, at the center of the lower surface of the middle body 12, blade receiver support portions 12b and 12b to which a pair of blade receivers 13 and 13 are supported and fixed are integrally formed. The blade receiver 13 has a pair of blade receiver springs 13a and 13a, a connecting piece 13b that connects the pair of blade receiving springs 13a and 13a on the base end side, and a direction opposite to the blade receiving spring 13a from one end side of the connecting piece 13b. And a terminal plate 13c projecting from each other. The blade receiving support 12b is formed in a substantially U-shape that opens rearward when viewed from below, and the blade receiver 13 is attached by inserting the connecting piece 13b from the rear into a groove formed inside. Yes. In addition, the pair of blade receivers 13 and 13 supported by the blade receiver support portions 12b and 12b is formed in a bottomed cylindrical shape with a synthetic resin material and is used to insert a plug blade of a power plug included in a load (electric equipment). Is inserted into an outlet cover 14 that is provided through the bottom surface. In addition, the bottom surface of the outlet cover 14 with the insertion port 14a opened is exposed to the outside through the window hole 1a opened at the bottom surface of the container 1.

  Further, the conductor 4 is caulked and fixed to the back side of the middle body 12. The conductor 4 is integrally formed in a state in which three conductive plates 40, 41, 42 are connected by a plurality of connecting pieces 43 by punching or bending a metal plate. The terminal plates 13c and 13c of the blade receivers 13 and 13 are electrically and mechanically connected to the lower ends of the conductive plates 40 and 41 by caulking, respectively. In addition, a pair of plug blades 20 and 20 constituting the external power supply connection portion 2 are electrically and mechanically connected to the upper end portions of the conductive plates 40 and 42 by caulking and are made of a synthetic resin molded product. A plug blade pressing member 21 through which rectangular holes 21a and 21a through which the blades 20 and 20 are inserted is attached. The back surfaces of the plug blades 20 and 20 and the plug blade pressing member 21 are exposed to the outside through a window hole 11b provided in the upper center of the back surface of the cover 11 (see FIG. 2D). A motor M is connected to the conductive plates 40 and 42 via lead wires 44. Furthermore, the central part of the conductive plates 41 and 42 is exposed to the storage space on the body 10 side through an opening (not shown) penetrating the middle body 12 in the front-rear direction. A pair of contact springs 45 and 46 described later are electrically and mechanically connected by caulking. Since the central conductive plate 41 is disposed so as to overlap with the motor M in the front-rear direction, there is an advantage that heat dissipation is improved by increasing the surface area of the conductor 4 using a dead space.

  Thus, in the present embodiment, the conductor 4 is formed by integrally connecting the three conductive plates 40, 41, and 42 with the connecting piece 43, and the blade receivers 13 and 13, the blades 20 and 20, and the contacts as described above. After the springs 45, 46 are caulked and fixed to the conductive plates 40, 41, 42, the connecting piece 43 is cut to separate the conductive plates 40, 41, 42. Therefore, the plug blade 20, the blade receiver 13 (terminal plate 13c). ), The connection work of the contact springs 45, 46 to the conductor 4 can be simplified, and the above-mentioned caulking and fixing can be performed in a state where the plurality of conductive plates 40, 41, 42 constituting the conductor 4 are connected by the connecting piece 43. Therefore, there is an advantage that the workability of the fixing work is improved.

  The contact springs 45, 46 are integrally formed with fixed pieces 45 a, 46 a that are caulked and fixed to the conductive plates 41, 42 and spring pieces 45 b, 46 b bent backward from the end portions of the fixed pieces 45 a, 46 a, A pair of contacts 31, 31 constituting a contact portion is fixed to the tip of each of the spring pieces 45 b, 46 b, and the pair of contacts 31, 31 are connected and separated by being driven by the switch mechanism portion 6 as will be described later. To do. That is, as shown in the circuit diagram of FIG. 11, one plug blade 20 and one blade receiver 13 are always connected via an electric path made of a conductive plate 40, and the other plug blade 20 and the other blade receiver 13 are connected to each other. When the contacts 31, 31 are closed (contacted), the two conductive plates 41, 42, the contact springs 45, 46 and the contacts 31, 31 are electrically connected, and the contacts 31, 31 are opened (opened). The switch mechanism 6 drives the contact springs 45 and 46 to open and close the contacts 31 and 31 (contact parts).

  Next, the timer mechanism unit 7 will be described. The timer mechanism unit 7 is provided on the front surface of the container body 1 so as to be rotatable, and a dial 5 on which a setting element 8 as setting means is detachably attached to a peripheral portion, and a rotation of the motor M to the dial 5 by a plurality of gears. And a gear mechanism 70 for transmission.

  As shown in FIG. 7, the gear mechanism 70 includes two third gears 72 a that selectively engage with a second gear 71 and a second gear 71 that mesh with a motor shaft gear (not shown) fixed to the shaft of the motor M. , 72b, the third gears 72a and 72b, the cam gear 73 that meshes with the cam gear 73, the reverse gear 74 that meshes with the cam 73a of the cam gear 73, the fourth gear 75 that meshes with the fourth gear 75, and the ninth gear that meshes with the fourth gear 75. The second gear 71 is pivotally supported on the body 10 by the shaft 78a, and the cam gear 73 and the two fourth gears 75 are supported by the shaft 78b. The reversing gear 74 and the remaining two fourth gears 75 are pivotally supported on the body 10 by the shaft 78c (see FIGS. 4B and 4C). Then, the front end portion of the ninth pinion gear 77 meshes with the teeth (not shown) of the dial 5 that is rotatably provided on the front side of the body 10, so that the rotation of the motor M is decelerated and transmitted to the dial 5. is doing. The two third gears 72a and 72b are rotatably attached to the lower end portion of the switching lever 79, and the switching lever 79 is pivotally supported on the body 10 by a shaft 78b. The switching lever 79 has a switching piece 79a extended to the opposite side to the third gears 72a and 72b with respect to the shaft 78b. The switching shaft 120 is connected to the tip of the switching piece 79a and is exposed on the back surface of the cover 11. By turning the operation unit 121 with a driver, the switching lever 79 is rotated via the switching shaft 120 so that the second gear 71 and the third gear 72 a or 72 b meshing with the cam gear 73 can be selected.

  Thus, in this embodiment, a synchronous motor that rotates in synchronization with the power supply frequency of the commercial power supply is used as the motor M, and the motor M rotates at a constant speed of 600 rpm in an area where the power supply frequency is 60 Hz. Then, the rotation of the motor M is decelerated by the gear mechanism 70, and finally the dial 5 is rotated once in 24 hours. Here, the rotational speed of the motor M (600 rpm or 500 rpm) is obtained by selectively switching the third gear 72a or 72b with the switching lever 79 between the region where the power frequency of the commercial power source is 60 Hz and the region where the frequency is 50 Hz. Regardless, the dial 5 can be rotated once in 24 hours. Further, since the rotation direction of the motor M is not uniquely determined because the synchronous motor is used, in the present embodiment, the cam gear 73 and the reverse gear 74 restrict the motor M from rotating in only one direction. . However, since such a gear mechanism 70 is well known in the art, a detailed description thereof will be omitted.

  The dial 5 is cylindrical and has a protrusion 50 whose time display scale is marked on the front surface periphery, and an annular shape surrounding the periphery of the protrusion 50, and a plurality of mounting grooves 52 along the circumferential direction, etc. The mounting portions 51 provided at intervals are integrally formed as a synthetic resin molded product. A circular bearing hole 50 a penetrating in the front-rear direction is provided at the center of the protruding portion 50. A circular recess 15 having a diameter larger than the outer diameter of the dial 5 is provided on the front surface of the body 10, and a cylindrical shaft portion inserted into the bearing hole 50 a of the protruding portion 50 is provided at the center of the bottom surface of the recess 15. 16 protrudes forward (see FIG. 1). The shaft portion 16 is provided with three engaging pieces 16a that can be bent in the radial direction of the dial 5 on the peripheral portion, and a locking step portion 50b provided on the inner peripheral surface of the bearing hole 50a of the protruding portion 50. The dial 5 is pivotally supported by engaging the engaging claw 16b at the tip of the engaging piece 16a (see FIG. 4B). The bearing hole 50 a is closed by a dial cover 53 attached to the shaft portion 16.

  On the other hand, as shown in FIGS. 8 and 9, the setting element 8 includes an indicator piece 80 that is narrow and has a triangular tip, a leg piece 81 that protrudes rearward from the rear surface of the indicator piece 80, and an indicator piece. A counter piece 82 protruding rearward from the back surface on the front end side of 80 is integrally formed as a synthetic resin molded product. An attachment piece 81 a that fits into the attachment groove 52 of the attachment portion 51 protrudes from the surface of the leg piece 81 that faces the opposite piece 82, and the attachment piece 81 a is a latch provided at the rear end of the attachment groove 52. A locking projection 81b that is detachably locked with the recess (see FIG. 4B) 52a is provided. Further, fitting grooves 50c along the mounting direction (front-rear direction) of the setting element 8 are provided on the peripheral surface of the protruding portion 50 at equal intervals over the entire circumference, and are fitted to the fitting grooves 50c. A protruding portion 82 a is provided on the facing piece 82. Note that the fitting groove 50c corresponds to the position of the time scale written in 15-minute increments as shown in FIG. 9B. Further, a claw piece 83 that abuts against the detection cams 63 and 64 of the switch mechanism 6 is provided on the surface of the leg piece 81 opposite to the side on which the attachment piece 81a is provided, as will be described later. However, two types of setting elements 8 for entering and for cutting are distinguished by the difference in position of the claw piece 83. The input setting element 8A is for setting the power supply start time. A claw piece 83 projects from the front end (rear end) of the leg piece 81, and the front of the instruction piece 80 is provided. A character “ON” is three-dimensionally formed at the rear end. The cutting setting element 8B is for setting a power supply stop time. A claw piece 83 projects from the position of the tip (rear end) of the leg piece 81, and the rear end of the front surface of the indicator piece 80. The characters “cut” are three-dimensionally formed in the part.

  For example, when setting the power supply stop time, first, the protrusion 82a provided on the opposing piece 82 is fitted into the fitting groove 50c corresponding to the position of the scale at the time of setting (see FIG. 9A). Further, when the setting piece 8B is pushed backward after the mounting piece 81a provided on the leg piece 81 is aligned with the mounting groove 52 of the mounting portion 51, the mounting piece 81a fits into the mounting groove 52 and the locking projection 81b is locked to the locking recess 52a provided at the rear end portion of the mounting groove 52, so that the setting element 8B is mounted on the mounting portion 51 in a state of being prevented from coming off (see FIGS. 8 and 9D). . As described above, in the present embodiment, the indicator strip 80 of the setting element 8 is graduated on the front surface of the protrusion 50 by fitting the protrusion 82a into the fitting groove 50c provided on the peripheral surface of the protrusion 50 of the dial 5. Easy to match.

  By the way, a plurality (four in this embodiment) of setting members 17 for storing setting members 8 that are not used are provided around the dial 5 at the front lower part of the body 10 at a predetermined interval. (See FIG. 5). The setting element storage portion 17 is formed of a recess into which the leg piece 81 and the opposing piece 82 of the setting element 8 are inserted, and a locked portion (not shown) provided with a locking projection 81b of the leg piece 81 at the bottom of the recess. The setting element 8 is housed in a state where it is prevented from coming off. Here, as shown in FIG. 13A, in the conventional example, a plurality of setting member storage portions 117 are provided on the front surface of the body 100, but the intervals between the plurality of setting member storage portions 117 are very narrow. Therefore, the setting element 107 has to be taken out by hooking it with the tip of the nail. On the other hand, in the present embodiment, a sufficiently large space is provided between the adjacent setting member storage portions 17 as compared with a human fingertip, so that the setting member storage portion 17 can be easily picked up with a finger. It can be taken out from.

  Next, the switch mechanism unit 6 will be described. The switch mechanism unit 6 includes the pair of contact springs 45 and 46 and the switch cam body 60 described above. The switch cam body 60 is made of a synthetic resin molded product, and has a shaft projection 61a that fits into a bearing recess 12d provided at the bottom on the front side of the middle body 12 on the rear end side, and is projected from the front wall of the body 10. A shaft portion 61 having a bearing groove 61b on the front end side with which the shaft protrusion 10b is fitted, a gear portion 62 provided at a substantially central portion of the shaft portion 61, and a front end side peripheral surface of the shaft portion 61 at a constant interval. From the peripheral surface of the shaft portion 61 on the rear end side with respect to the four detection cams 63 for input, which protrude in the radial direction and come into contact with the claw pieces 83 of the input setting element 8A. Four detection cams 64 for cutting that protrude in the radial direction at regular intervals and come into contact with the claw pieces 83 of the setting element 8B for cutting, and the radial direction at regular intervals from the peripheral surface of the rear end side of the shaft portion 61 The four first plates that protrude in the radial direction and abut against the tip of one contact spring 45 in the radial direction Four cams 65 project radially from the peripheral surface of the rear end side of the shaft portion 61 on the rear end side with respect to the first cam 65 and are in radial contact with the tip end portion of the other contact spring 46. The second cam 66 is integrally formed, and is pivotally supported by the bearing recess 12d of the middle body 12 and the shaft projection 10b of the body 10 so as to be rotatable about the shaft portion 61 (FIG. 3A and FIG. 3). (Refer FIG.4 (b)). Here, an opening 15a is provided on the upper side of the center in the horizontal direction on the circumferential surface of the recess 15 of the body 10, and each of the four detection cams 63 and 64 for entering and cutting is recessed through the opening 15a. 15 can be brought into contact with the claw piece 83 of the setting member 8 attached to the attachment portion 51 of the dial 5 (see FIG. 1). The two types of detection cams 63 and 64 are alternately arranged at an interval of about 45 degrees as viewed from the axial direction, and the first and second cams 65 and 66 are also alternately arranged at an interval of about 45 degrees from the axial direction. Is arranged.

  The switch mechanism unit 6 includes a switch feed shaft 67 and an operation knob 68 for manually opening and closing the contacts 31, 31 without using the timer mechanism unit 7. Similarly to the switch cam body 60, the switch feed shaft 67 is pivotally supported by the body 10 and the middle body 12, and the gear portion of the switch cam body 60 is provided at the approximate center of the shaft body 67 a. A gear 67b meshing with the gear 62 and a clutch tooth 67c provided on the front side of the gear 67b are integrally formed of a synthetic resin material. The operation knob 68 is formed integrally with a cylindrical knob body 68a and a clutch tooth 68b that is provided on the rear end side of the knob body 68a and meshes with the clutch teeth 67c of the switch feed shaft 67. It is inserted in the front end side. The knob body 68 a of the operation knob 68 protrudes to the front side of the body 10 through a hole 10 c that penetrates the front wall of the body 10. Here, in the normal state, the rotation direction of the switch feed shaft 67 and the direction in which the clutch teeth 67c and 68b mesh are opposite to each other. However, when the operation knob 68 is turned in a predetermined direction, the clutch teeth 67c and 68b mesh with each other. The feed shaft 67 can be manually rotated.

  Next, the operation of the switch mechanism unit 6 will be described with reference to FIG. In the state where the tip of the contact spring 45 abuts on the first cam 65 and is bent as shown in FIG. 10H, and the tip of the contact spring 46 abuts on the second cam 66, each contact spring 45 Since the contact points 31, 31 fixed to the tip portions of 45, 46 are separated (opened), the power supply path from the external power supply connection part 2 to the load connection part 3 is opened, so that the load connection is established. The load (electrical device) connected to the unit 3 is not energized. When the input setting member 8A attached to the attachment portion 51 of the dial 5 reaches the current time position, that is, the position facing the opening 15a of the recess 15 at the power supply start time, the input setting is made. The claw piece 83 of the child 8A comes into contact with one of the detection cams 63 and rotates the switch cam body 60 in a clockwise direction when viewed from the rear (see FIGS. 10A and 10B). No longer comes into contact with the first cam 65, and the other contact spring 46 is pushed by the second cam 66, so that the contacts 31, 31 at the tips of the contact springs 45, 46 come into contact with each other (FIG. 10C). And (d)). Therefore, the contacts 31 and 31 are in contact (closed) and turned on, and the power supply path from the external power supply connection unit 2 to the load connection unit 3 is closed, so that the load (electrical device) connected to the load connection unit 3 is closed. ) Is energized.

  On the other hand, when the cutting setting member 8B attached to the mounting portion 51 of the dial 5 reaches the current time position at the time when the power supply is stopped, the claw piece 83 of the cutting setting member 8B is moved to the other detection cam 64. , The switch cam body 60 is rotated clockwise as viewed from the rear (see FIGS. 10E and 10F), and the other contact spring 46 of the second cam 66 that has been in contact so far When one of the contact springs 45 abuts against the adjacent second cam 66 and is pressed by the first cam 65, the contacts 31, 31 at the tip of each of the contact springs 45, 46 are separated to return to the off state. (Refer to Drawing 10 (g) and (h)). Further, if the switch feed shaft 67 is manually rotated by operating the operation knob 68, the switch cam body 60 rotates because the gear 67b of the switch feed shaft 67 and the gear portion 62 of the switch cam body 60 are engaged with each other. The contacts 31, 31 can be forcibly opened or closed by moving.

  Thus, the setting device 8A for entering is attached to the mounting portion 51 of the dial 5 in accordance with the time when the power supply to the electric device as the load is to be started, and the setting device 8B for cutting is attached according to the time when the power supply is to be stopped. By attaching the protrusion 51 to the finger 51 and turning the dial 5 to rotate the dial 5, the time display scale of the dial 5 is adjusted to the current time position, that is, the position of the opening 15 a of the recess 15. Set. Then, by inserting a power plug of the electric device into the insertion port 14a of the outlet cover 14, connecting the electric device to the load connecting portion 3, and further inserting the plug blades 20 and 20 into an outlet or the like provided on the wall surface. Connect the external power connection 2 to a commercial power source. If it does so, the motor M will operate | move by the power supply from a commercial power supply, the dial 5 will be rotated, and when the electric power feeding start time set comes, the switch mechanism part 6 will operate | move as mentioned above, and will close the contacts 31 and 31. Thus, the power supply to the electric device is started, and when the power supply stop time set is reached, the switch mechanism unit 6 operates to open the contacts 31 and 31, thereby stopping the power supply to the electric device. Here, in the conventional example shown in FIG. 13, since the front surface of the dial 106 is flat, it is difficult to perform an operation of picking and turning it with a finger, but in this embodiment, from the front surface of the body 1 (body 10). Since the protrusion 50 protruding forward is provided at the approximate center of the dial 5, there is an advantage that the dial 5 can be turned by grasping the protrusion 50 and the operability of the dial 5 is improved. In the present embodiment, since the display position of the current time (the position of the opening 15a where the detection cams 63 and 64 face the recess 15) is at a position directly above the dial 5 on the front surface of the container 1, Thus, the time can be confirmed more easily than when the position is shifted from the position just above. In the present embodiment, an indicator lamp block 30 that is turned on when an external power supply is connected to the external power supply connection portion 2 to display an energized state is stored in the storage space on the body 10 side. The lighting / extinguishing of the indicator lamp block 30 can be visually recognized through a through hole 10h provided in the front surface of 10.

  By the way, in this embodiment, it turns to the body 1 (body 10) so that rotation is possible between the position (closed position) which covers the front surface of the body 1 (body 10), and the position which opens the front surface of the body 1 (open position). A transparent door 9 is provided. The door 9 is formed in a substantially box shape that opens to the back side by a transparent synthetic resin material such as acrylic resin, and a pair of ends that are arc-shaped and protrude rearward from the left end portions of the upper and lower side surfaces. Hinge pieces 90, 90 are provided. Recessed bearing portions 91 are provided on the outer surface of the hinge piece 90, respectively, and the tip end portion of the hinge piece 90 gradually decreases in thickness toward the tip to form an inclined surface (FIG. 6 (c). )reference).

  On the other hand, the left side surface of the body 10 is provided with recesses 10d and 10d opened forward and laterally, and the side surfaces of the respective recesses 10d are projecting shaft portions that are detachably fitted to the bearing portions 91 of the hinge piece 90. 10e protrudes from each other (see FIG. 6B). Therefore, when the hinge pieces 90, 90 are inserted into the recesses 10d, 10d, the shaft portion 10e is slidably brought into contact with the inclined surface of the tip portion of the hinge piece 90, the hinge piece 90 is bent, and the shaft portion 10e eventually becomes a bearing. The door 9 is pivotally attached to the front surface of the container 1 (body 10) with the shaft portion 10e as a fulcrum by fitting into the portion 91. Further, if the door 9 is pulled away from the container body 1, the hinge pieces 90 and 90 are bent and the shaft portions 10 e and 10 e are removed from the bearing portions 91 and 91, so that the door 9 can be detached from the container body 1. Further, a pair of lock claws 92 and 92 project from the inner surface on the free end (right end) side of the door 9, and when the door 9 is in the closed position, the pair of lock claws 92 and 92 are connected to the body 10. The door 9 is locked in the closed position with respect to the container body 1 (body 10) by engaging with a pair of lock grooves 10f, 10f provided at the front end portion of the right side surface. A protrusion 93 is provided on the outer surface on the right end side of the door 9, and when the door 9 is pulled forward by hooking a finger on the protrusion 93, the lock claws 92, 92 and the lock grooves 10f, 10f The engagement is released and the door 9 can be opened. Here, projecting portions 10g and 10g covering the entire upper and lower side surfaces of the door 9 in the closed position are projected forward at the upper end portion and the lower end portion of the front surface of the body 10 and dropped by mistake. In such a case, the door 9 can be protected by preventing the door 9 from being subjected to a strong impact by the protruding portion 10g.

  Thus, after setting the current time, etc., the door 9 is closed to prevent the dial 5 from being inadvertently operated, and the door 9 is closed because the door 9 is transparent. Even in the state, the state of the dial 5 and the setting member 8 can be visually recognized. Moreover, since the rotation fulcrum of the door 9 is provided on the side surface of the container body 1, the opening angle of the door 9 at the position where the front surface of the container body 1 is opened is that the rotation fulcrum of the door 9 is on the front surface of the container body 1. There is an advantage that the setting work by the setting element 8 is easy to be performed. Furthermore, since the door 9 can be detachably attached to the body 1 by fitting the shaft portion 10e of the body 10 to the bearing portion 91 of the hinge piece 90, operation of the dial 5 and setting by the setting member 8 are frequently performed. If the door 9 is removed, the work can be easily performed by removing the door 9 from the container 1. In the present embodiment, the external power connection 2 is constituted by the plug blades 20, 20, but a power cord 23 having a power plug 22 attached to the tip as shown in FIG. 12 may be used.

It is a disassembled perspective view which shows embodiment of this invention. FIG. 2A is a front view of the door opened, FIG. 2B is a front view of the door closed, FIG. 2C is a right side view of the door closed, and FIG. (E) is a bottom sectional view of the state where the door is opened, and (f) is a bottom view of the state where the door is closed. (A) is the exploded perspective view seen from the back same as the above, (b) is the exploded perspective view of a middle body and a conductive plate. (A) is a front view, (b) is a cross-sectional view taken along the line BB of (a), (c) is a cover, a rear view with the middle body removed, and (d) is a cover. It is the rear view which fractured | ruptured partially in the removed state. It is a perspective view of the state which removed the door. The same as the above, (a) is an exploded perspective view with the door removed, (b) is a perspective view of the main part of the vessel, and (c) is a cross-sectional view of the main part with the door attached. It is a disassembled perspective view of the timer mechanism part same as the above. (A)-(d) is explanatory drawing of the setting operation | work by a setter. The principal part of the dial with which the setting element was attached is shown, (a) is a perspective view, (b) is a front view. (A)-(h) is operation | movement explanatory drawing of the switch mechanism part in the same as the above. It is a circuit block diagram same as the above. An embodiment in which an external power supply connecting portion is a power cord is shown, (a) is a front view, (b) is a bottom view, (c) is a rear view, and (d) is a left side view. A conventional example is shown, (a) is a front view, (b) is a partially broken right side view, (c) is a front view with the container open, (d) is a left side sectional view, (e) FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Body 2 External power supply connection part 3 Load connection part 4 Electric conductor 5 Dial 6 Switch mechanism part 7 Timer mechanism part 8 Setting element 50 Protrusion part

Claims (6)

An external power supply connection portion that is electrically connected to an external power supply, a load connection portion that is electrically connected to a load, a conductor that forms a feeding path from the external power supply connection portion to the load connection portion, and a conductor A contact part that is electrically connected to open and close the power supply path, a motor that operates by receiving power supply from an external power source via an external power supply connection part, a timer mechanism part that is driven by the motor and measures time, When the power supply start time and power supply stop time set by the setting means for setting the power supply start and power supply stop times to the load to the timer mechanism unit coincide with the current time measured by the timer mechanism unit And a switch mechanism for closing or opening the power supply path by driving the contact portion, and a container body that is formed in a substantially box shape and accommodates the respective parts, and the timer mechanism section is provided on the front surface of the container body. It is provided so that it can be rotated and setting means The dial includes a dial on which a setting member is detachably attached and a gear mechanism that transmits rotation of the motor to the dial by a plurality of gears, and each of the switch mechanism portions is provided with a contact that constitutes a contact portion. And a cam mechanism that drives the contact spring to contact or separate the contact when the setting element attached to the dial reaches a predetermined position corresponding to the power supply start time or the power supply stop time. A protrusion projecting forward from the front surface of the body is provided at the approximate center of the dial, and the dial has a cylindrical shape with a time display scale marked on the front peripheral portion; An annular ring that surrounds the periphery, and a plurality of mounting grooves provided at equal intervals along the circumferential direction, and the setting element includes an indicating piece for indicating the scale on the front surface of the protruding portion, and the mounting portion Mounting groove and A fitting piece and a facing piece facing the peripheral surface of the protruding portion, and fitting grooves along the mounting direction of the setting element are provided on the peripheral surface of the protruding portion at equal intervals over the entire circumference. A time switch characterized in that a protrusion that fits into the fitting groove is provided on an opposing piece of the setting element . 2. The time switch according to claim 1, wherein the predetermined position is a position indicating a current time, and is set above a central dial in the horizontal direction on the front surface of the body . The time switch according to claim 1 or 2 , wherein a plurality of setting member storage portions for storing unused setting members are provided at predetermined intervals around the dial on the front surface of the body. . It has a transparent door that can be pivoted between the position covering the front of the container and the position opening the front of the container, and the pivot of the door is provided on the side of the container. The time switch according to claim 1. 5. The time switch according to claim 4 , wherein the door has a concave bearing portion in which a protruding shaft portion provided on the side surface of the container body is detachably fitted . 6. The time switch according to claim 4 or 5 , wherein, when the door is in a position covering the front of the container body, protrusions covering both side surfaces along the opening and closing direction of the door are projected forward from the front surface of the container body. .

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