Timer with all-plastic box
By introducing a contact plate positioning component and a blocking plate structure into the timer, the stability problem of the moving and stationary contacts is solved, the circuit can be stably connected and disconnected, and the reliability of the timer is improved.
Patent Information
- Application Number
- CN202423074917.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-13
AI Technical Summary
In existing timers, the stability of the moving and stationary contacts is poor, and they are prone to positional shifts when the cam mechanism is activated, resulting in unstable circuit contact.
Design a timer with an all-plastic box, using a contact plate positioning component and a blocking plate structure to ensure stable installation of the moving and stationary contact plates. The cooperation of bending grooves and bending blocks prevents positional deviation, and the cooperation of the blocking plate and torsion spring achieves positioning.
This effectively prevents the moving and stationary contacts from shifting position when the cam is turned, ensuring stable circuit connection and disconnection and improving the reliability of the timer.
Smart Images
Figure CN223513868U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of timer technology, and in particular to a timer with an all-plastic box. Background Technology
[0002] A timer is a mechanical or electronic device used for timing. With the improvement of living standards, the uses of timers are becoming increasingly widespread.
[0003] For example, a mechanical timer is driven by a motor to rotate a reduction gear set. This type of timer usually has an escapement speed regulator inside to control the timekeeping accuracy, and uses gear transmission and cam mechanism to operate the actuator. The cam will push the moving contact plate to contact the stationary contact plate, thereby realizing the connection and disconnection of the circuit.
[0004] In existing timers, the moving and stationary contacts are usually directly connected to the circuit that needs to control the opening and closing of the device. The stability of the moving and stationary contacts is poor. When the cam mechanism moves the moving contact to open or close the circuit, the moving and stationary contacts will shift in position, causing the moving contact to be unable to contact the stationary contact, which affects the subsequent connection and disconnection of the circuit. Therefore, a timer with an all-plastic box is designed to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to solve the problems existing in the above-mentioned background technology by proposing a timer with an all-plastic box.
[0006] The technical problem to be solved by this utility model is to provide a timer with an all-plastic box, which solves the problem in the prior art where the stability of the moving contact and the stationary contact is poor. When the cam mechanism moves the moving contact to open or close the circuit, the moving contact and the stationary contact will shift in position, causing the moving contact to be unable to contact the stationary contact in the future.
[0007] This utility model provides a timer with an all-plastic box, including a timer housing, a cover, a speed switch, a pointer, a dial, a transparent partition, a circuit board, a drive motor, a drive gear, and a reduction gear set. The cover covers the top of the timer housing, and the speed switch is installed in the center of the upper surface of the cover. The pointer is fixedly installed on the outside of the speed switch, and the dial is installed on the outside of the speed switch. The transparent partition is fixedly installed in the center of the inner side of the timer housing, and the circuit board is installed on the transparent partition. The drive motor is fixedly installed at the bottom of the transparent partition, and the drive gear is fixedly installed at the output end of the drive motor. The reduction gear set is installed at the bottom of the inner side of the timer housing, and a cam disk is meshed on the reduction gear set. A touch plate positioning assembly is installed on the inner side of the timer housing, and a moving touch plate and a stationary touch plate are installed on the touch plate positioning assembly.
[0008] Preferably, the speed switch is electrically connected to the drive motor.
[0009] Preferably, the moving contact plate and the stationary contact plate are connected in series with the circuit of the device to be controlled.
[0010] Preferably, the cam disk has four protrusions, and when the protrusions of the cam disk contact the moving contact plate, the moving contact plate and the stationary contact plate are in contact with each other.
[0011] Preferably, the moving contact plate and the stationary contact plate are bent, and the contact plate positioning assembly includes a support plate, a bending groove and a bending block, with the bending block fixedly disposed at the center of the bend of the bending groove.
[0012] Preferably, the distance between the bending block and the side wall of the bending groove is equal to the thickness of the moving contact plate and the stationary contact plate, and the depth of the bending groove is equal to the width of the moving contact plate and the stationary contact plate.
[0013] Preferably, a blocking plate is rotatably mounted on the center of the upper surface of the bending block via a pin, a fixing plate is fixedly mounted on the top of the pin, and a torsion spring is fixedly mounted between the fixing plate and the blocking plate.
[0014] Preferably, when the torsion spring is in an untorsed state, the blocking plate blocks the gap between the bending block and the bending groove, and after the blocking plate rotates 90°, the blocking plate will not block the gap between the bending block and the bending groove.
[0015] Compared with the prior art, this utility model has at least the following beneficial effects:
[0016] 1. This utility model adjusts the speed of the drive motor by rotating a speed switch. The drive motor drives the active gear to rotate, the active gear drives the reduction gear set to rotate, and the reduction gear set drives the cam disk to rotate. When the protruding part on the cam disk contacts the moving contact plate, the moving contact plate contacts the stationary contact plate, and the circuit is connected to achieve the effect of timed start-up of the equipment. The position of the pointer can be adjusted according to the orientation of the speed switch. The scale is marked with the circuit connection time for the corresponding speed, so as to achieve the effect of intermittent timed start-up of the equipment.
[0017] 2. This utility model incorporates a touch plate positioning component that bends the moving and stationary touch plates. The positioning component includes a bending groove and a bending block. During installation, the bent portions of the moving and stationary touch plates are engaged with the gaps in the bending groove and the bending block. This installation prevents the moving and stationary touch plates from shifting left, right, inward, or outward, ensuring their stability and preventing positional shifts when the cam disc moves the moving and stationary touch plates. This ensures stable circuit connection and disconnection.
[0018] 3. This utility model incorporates a blocking plate. When installing the moving and stationary contact plates, rotating the blocking plate prevents it from obstructing the gap between the bending block and the bending groove. At this time, the torsion spring is in a torsional state. Then, the bent parts of the moving and stationary contact plates are respectively installed in the gaps on both sides of the bending block and the bending groove. Releasing the blocking plate allows the torsion spring's rebound force to return the blocking plate to its original position. At this point, the blocking plate blocks the area above the gap between the bending block and the bending groove, effectively positioning the moving and stationary contact plates installed in the gap and preventing them from detaching from the top of the bending groove, thus further ensuring the stability of the moving and stationary contact plates after installation. Attached Figure Description
[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0020] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model.
[0021] Figure 2 This is a three-dimensional structural diagram of the timer housing of this utility model.
[0022] Figure 3 This is a three-dimensional schematic diagram of a partial structure of the timer housing of this utility model.
[0023] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A.
[0024] Figure 5 This is a schematic diagram showing the disassembled structure of the moving contact plate, the stationary contact plate, and the contact plate positioning assembly of this utility model.
[0025] Figure 6 This utility model Figure 5 Enlarged view at point B.
[0026] Figure 7 This utility model Figure 6 Another schematic diagram of the state structure.
[0027] [Figure Labels]
[0028] 1. Timer housing; 2. Housing cover; 3. Speed switch; 4. Pointer; 5. Dial; 6. Transparent partition; 7. Circuit board; 8. Drive motor; 801. Drive gear; 9. Reduction gear set; 10. Cam plate; 11. Support plate; 1101. Bending groove; 1102. Bending block; 1103. Pin; 1104. Blocking plate; 1105. Fixed plate; 1106. Torsion spring; 12. Moving contact plate; 13. Stationary contact plate. Detailed Implementation
[0029] Example:
[0030] like Figures 1-7 As shown, an embodiment of this utility model provides a timer with an all-plastic box, including a timer housing 1, a cover 2, a speed switch 3, a pointer 4, a dial 5, a transparent partition 6, a circuit board 7, a drive motor 8, a drive gear 801, and a reduction gear set 9. The cover 2 covers the top of the timer housing 1. The speed switch 3 is installed in the center of the upper surface of the cover 2. The pointer 4 is fixedly installed on the outside of the speed switch 3. The dial 5 is installed on the outside of the speed switch 3. The transparent partition 6 is fixedly installed in the center of the inner side of the timer housing 1. The circuit board 7 is installed on the transparent partition 6. The drive motor 8 is fixedly installed at the bottom of the transparent partition 6. The drive gear 801 is fixedly installed at the output end of the drive motor 8. The reduction gear set 9 is installed at the bottom of the inner side of the timer housing 1. A cam disk 10 is meshed on the reduction gear set 9. A touch plate positioning assembly is installed on the inner side of the timer housing 1. A moving touch plate 12 and a stationary touch plate 13 are installed on the touch plate positioning assembly.
[0031] In actual use, by rotating the speed switch 3, the speed of the drive motor 8 is adjusted. The drive motor 8 drives the active gear 801 to rotate, the active gear 801 drives the reduction gear set 9 to rotate, and the reduction gear set 9 drives the cam disk 10 to rotate. When the protrusion on the cam disk 10 contacts the moving contact plate 12, the moving contact plate 12 contacts the stationary contact plate 13, and the circuit is connected to achieve the effect of timed start-up of the equipment. The position of the pointer can be adjusted according to the orientation of the speed switch 3. The scale 5 is marked with the circuit connection time for the corresponding speed, so as to achieve the effect of intermittent timed start-up of the equipment.
[0032] In this embodiment, the speed switch 3 is electrically connected to the drive motor 8, which facilitates the control of the rotation speed of the drive motor 8 through the speed switch, thereby achieving the effect of adjusting the circuit connection and disconnection time.
[0033] In this embodiment, the moving contact plate 12 and the stationary contact plate 13 are connected in series with the circuit of the device to be controlled. When the moving contact plate 12 and the stationary contact plate 13 are in contact, the circuit is connected, thereby achieving the effect of turning on the device. When the moving contact plate 12 and the stationary contact plate 13 are separated, the circuit is disconnected, thereby achieving the effect of turning off the device.
[0034] In this embodiment, the cam disk 10 has four protrusions. When the protrusions of the cam disk 10 contact the moving contact plate 12, the moving contact plate 12 and the stationary contact plate 13 come into contact with each other, so that the cam disk 10 can make the moving contact plate 12 and the stationary contact plate 13 come into contact and realize the circuit connection.
[0035] In this embodiment, the moving contact plate 12 and the stationary contact plate 13 are bent. The contact plate positioning assembly includes a support plate 11, a bending groove 1101 and a bending block 1102. The bending block 1102 is fixedly provided in the center of the bend of the bending groove 1101.
[0036] In this embodiment, the distance between the bending block 1102 and the side wall of the bending groove 1101 is equal to the thickness of the moving contact plate 12 and the stationary contact plate 13, and the depth of the bending groove 1101 is equal to the width of the moving contact plate 12 and the stationary contact plate 13.
[0037] By incorporating a contact plate positioning assembly, the moving contact plate 12 and the stationary contact plate 13 are bent. The contact plate positioning assembly is provided with a bending groove 1101 and a bending block 1102. During installation, the bent parts of the moving contact plate 12 and the stationary contact plate 13 are engaged with the gap between the bending groove 1101 and the bending block 1102. This installation prevents the moving contact plate 12 and the stationary contact plate 13 from shifting left, right, inward, or outward, ensuring their stability and preventing positional shift when the cam disc 10 moves the moving contact plate 12. This ensures stable circuit connection and disconnection.
[0038] In this embodiment, a baffle plate 1104 is rotatably mounted on the center of the upper surface of the bending block 1102 via a pin 1103, a fixing plate 1105 is fixedly mounted on the top of the pin 1103, and a torsion spring 1106 is fixedly mounted between the fixing plate 1105 and the baffle plate 1104.
[0039] In this embodiment, when the torsion spring 1106 is in an untorsed state, the blocking plate 1104 blocks the gap between the bending block 1102 and the bending groove 1101, and after the blocking plate 1104 rotates 90°, the blocking plate 1104 blocks the gap between the bending block 1102 and the bending groove 1101.
[0040] By providing a blocking plate 1104, when installing the moving contact plate 12 and the stationary contact plate 13, the blocking plate 1104 is rotated so that it does not block the gap between the bending block 1102 and the bending groove 1101. At this time, the torsion spring 1106 is in a torsional state. Then, the bent parts of the moving contact plate 12 and the stationary contact plate 13 are respectively installed in the gaps on both sides of the bending block 1102 and the bending groove 1101. The blocking plate 1104 is then released, and the torsion spring 1106 is in a torsional state. The rebound force of 06 causes the blocking plate 1104 to return to its original position. At this time, the blocking plate 1104 blocks the gap between the bending block 1102 and the bending groove 1101, thereby positioning the moving contact plate 12 and the stationary contact plate 13 installed in the gap between the bending block 1102 and the bending groove 1101. This prevents the moving contact plate 12 and the stationary contact plate 13 from coming out from the top of the bending groove 1101, further ensuring the stability of the moving contact plate 12 and the stationary contact plate 13 after installation.
[0041] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these should also be considered within the scope of protection of this utility model. These will not affect the implementation effect of this utility model or the practicality of the patent.
Claims
1. A timer with an all-plastic box, characterized in that: The device includes a timer housing (1), a cover (2), a speed switch (3), a pointer (4), a dial (5), a transparent partition (6), a circuit board (7), a drive motor (8), a drive gear (801), and a reduction gear set (9). The timer housing (1) is covered by the cover (2). The speed switch (3) is installed in the center of the upper surface of the cover (2). The pointer (4) is fixedly installed on the outside of the speed switch (3). The dial (5) is installed on the outside of the speed switch (3). The center of the inner side of the timer housing (1) is fixedly installed with a pointer (4). A transparent partition (6) is fixedly provided, and a circuit board (7) is installed on the transparent partition (6). A drive motor (8) is fixedly provided at the bottom of the transparent partition (6). An active gear (801) is fixedly provided at the output end of the drive motor (8). A reduction gear set (9) is installed on the inner bottom of the timer housing (1). A cam disk (10) is meshed on the reduction gear set (9). A touch plate positioning assembly is installed on the inner side of the timer housing (1). A moving touch plate (12) and a stationary touch plate (13) are installed on the touch plate positioning assembly.
2. The timer with an all-plastic box as described in claim 1, characterized in that: The speed switch (3) is electrically connected to the drive motor (8).
3. The timer with an all-plastic box as described in claim 2, characterized in that: The moving contact plate (12) and the stationary contact plate (13) are connected in series with the circuit of the device to be controlled.
4. The timer with an all-plastic box as described in claim 3, characterized in that: The cam disk (10) has four protrusions, and when the protrusions of the cam disk (10) contact the moving contact plate (12), the moving contact plate (12) and the stationary contact plate (13) come into contact with each other.
5. The timer with an all-plastic box as described in claim 1, characterized in that: The moving contact plate (12) and the stationary contact plate (13) are bent. The contact plate positioning assembly includes a support plate (11), a bending groove (1101) and a bending block (1102). The bending block (1102) is fixedly provided in the center of the bend of the bending groove (1101).
6. The timer with an all-plastic box as described in claim 5, characterized in that: The distance between the bending block (1102) and the side wall of the bending groove (1101) is equal to the thickness of the moving contact plate (12) and the stationary contact plate (13), and the depth of the bending groove (1101) is equal to the width of the moving contact plate (12) and the stationary contact plate (13).
7. The timer with an all-plastic box as described in claim 6, characterized in that: A baffle plate (1104) is rotatably mounted on the center of the upper surface of the bending block (1102) via a pin (1103). A fixing plate (1105) is fixedly mounted on the top of the pin (1103), and a torsion spring (1106) is fixedly mounted between the fixing plate (1105) and the baffle plate (1104).
8. The timer with an all-plastic box as described in claim 7, characterized in that: When the torsion spring (1106) is in an untorsed state, the blocking plate (1104) blocks the gap between the bending block (1102) and the bending groove (1101), and after the blocking plate (1104) rotates 90°, the blocking plate (1104) will not block the gap between the bending block (1102) and the bending groove (1101).