Mechanical delay type change-over switch device

Abstract

The invention discloses a mechanical delay type change-over switch device, which comprises a shell, a water retaining mechanism, a delay change-over switch mechanism and a diaphragm, and is characterized in that a water inlet, a water outlet A and a water outlet B which are respectively communicated with a change-over accommodating cavity are formed in the shell; the delay change-over switch mechanism can store elastic force in the operation period of a user and then release the elastic force so as to enable the diaphragm switch water inlet on one hand and drive the water blocking mechanism to switch and block the water outlet A and the water outlet B on the other hand, and a combination valve capable of delaying control over a water way switch and water way switching can be formed in the closestool flushing system. The structure is very compact, the toilet flushing requirements in different scenes can be met, and the use flexibility is high.

Description

Technical Field

[0001] The invention relates to the technical field of toilet flushing systems, in particular to the technical field of switching devices. Background Art

[0002] A toilet, commonly known as a toilet, usually has two flushing methods, namely direct flushing and siphon flushing. A toilet flushing system generally has two water outlets, and one water outlet is connected to the flushing side of the barrel wall (RIM side), while the other water outlet is connected to the siphon flushing side (JET side). Among them, the RIM side pipe outlet is usually located below the toilet seat and close to the seat, while the JET side pipe outlet is located lower (located in the water storage part of the toilet).

[0003] Traditional toilet flushing systems generally use a water tank water pump and a reversing valve to flush the toilet. This design requires driving the water pump to achieve the toilet flushing during a power outage. However, since the driving power of the water pump is very large, the toilet flushing system must use a special large capacitor or large-capacity battery to complete the driving operation, and such batteries often have problems such as high cost, short service life and potential safety hazards.

[0004] Based on this, a switch valve and a switching device can be installed in the main water inlet line, so that the water line switching can be used to ensure a good flushing effect in normal times on the one hand and solve the problem of flushing during power outages on the other hand; however, how to combine the switch valve and the switching device into a combination valve to reduce the volume of the toilet flushing system needs to be solved urgently; in addition, if manual mechanical pressing is used to provide the combination valve with power for valve switching and water line switching, the combination valve can easily be damaged due to repeated pressing by the user at inappropriate times. Summary of the invention

[0005] The purpose of the present invention is to solve the problems in the prior art and propose a mechanical delayed switching switch device, which can form a combination valve in the toilet flushing system that can delay the control of the water circuit switch and the water circuit switching. It not only has a very compact structure and can meet the toilet flushing needs in different scenarios, but also has strong flexibility in use.

[0006] To achieve the above-mentioned purpose, the present invention proposes a mechanical delayed switching switch device, including a shell, a water retaining mechanism, a delayed switching switch mechanism and a diaphragm. The shell is provided with a water inlet, a water outlet A and a water outlet B respectively connected to the switching cavity. The delayed switching switch mechanism can first store elastic force during user operation and then release the elastic force to allow the diaphragm switch to open the water inlet on the one hand and drive the water retaining mechanism to switch and isolate the water outlet A and the water outlet B on the other hand.

[0007] Preferably, the delay switching switch mechanism comprises a gear, a ratchet and a position adjusting cam, the gear is rotatably connected in the housing, and the position adjusting cam is indirectly connected to the gear via the ratchet.

[0008] Preferably, the delayed switching switch mechanism has a handle slidably connected in a slideway of the shell and a return force storage structure. The return force storage structure can store elastic force when the handle is manually pressed down by the user and release the elastic force after the handle is released by the user. The gear is meshed with the handle through a vertical tooth portion, and the ratchet only rotates one mating tooth during manual depression, and drives the adjustment cam to rotate with the gear only when the handle is moved up.

[0009] Preferably, the delayed switching switch mechanism also includes a control rod, the housing is provided with a water inlet channel connected to the water inlet and a valve seat located in the water inlet channel and having a center hole, and the positioning cam can utilize the concave-convex structure located on the surface to move the control rod away from or close to the valve seat during rotation to open or close the center hole.

[0010] Preferably, a sealing member is provided on the control rod and is arranged opposite to the central hole, and a sealing spring is also provided between the control rod and the housing.

[0011] Preferably, the water-blocking mechanism comprises a rotating shaft, a baffle and an axial boss. The rotating shaft is rotatably connected to the switching cavity. The baffle is fixed on the rotating shaft and can block the water outlet A or the water outlet B as the rotating shaft rotates. The axial boss is installed on the rotating shaft and extends into the vertical slide. The handle is provided with a boss assembly that can rotate the rotating shaft by hitting the axial boss.

[0012] Preferably, the boss assembly is composed of a movable boss and a fixed boss respectively located on the left and right sides of the shaft body boss, and a boss cavity is provided on the handle for receiving the movable boss when the handle moves downward.

[0013] Preferably, a damper is further included, wherein the damper is installed on the housing and can reduce the upward return speed of the handle.

[0014] Preferably, a locking mechanism is provided on the housing to limit the handle from being manually pressed downward during the upward resetting of the handle.

[0015] Preferably, the locking mechanism includes a locking cam and a retaining spring, the locking cam is rotatably connected to the housing, and the retaining spring is installed between the locking cam and the housing. The locking cam can limit the downward movement of the handle by interlocking with the hook during the upward resetting of the handle, and can automatically release the interlocking relationship with the hook when the handle is reset upward into place.

[0016] Beneficial effects of the present invention: 1) By jointly arranging the water retaining mechanism, the delayed switching switch mechanism and the diaphragm in the housing, the delayed switching switch mechanism can be used to first store elastic force during the user's operation and then release the elastic force to make the diaphragm switch the water inlet on the one hand and drive the water retaining mechanism to switch and block the water outlet A and the water outlet B on the other hand, thereby forming a combined valve that can delay the control of the water circuit switch and the water circuit switch in the toilet flushing system. Not only is the structure very compact, but the user can operate it with one button, which is simple and convenient to operate; 2) The handle is linked with the adjustment cam and the damper by using fixed gears and ratchets. During manual operation, only the return mechanism is energy stored. During return, the ratchets are linked with the adjustment cam and the damper, which makes manual operation easier. 3) Since the ratchet and the adjustment cam are disengaged at the beginning, and there is a movable boss on the handle, when it is manually pressed down, the action of the handle will not affect the entire mechanism. Only when the handle is pressed down to the right position and the ratchet is stuck on a tooth, the entire delay mechanism will start to work normally. This effectively prevents human error or inadequate operation, resulting in functional failure or damage to the mechanism. By installing a damper, the damper can be used to reduce the rising speed of the handle to ensure that the valve opening and closing speed and the waterway switching speed meet the requirements; 4) By adding a hook portion on the handle and providing a locking mechanism consisting of a locking cam and a retaining spring on the outer shell, the locked locking cam and hook portion can be used to prevent the handle from being pressed down again by the user during normal operation of the delayed switching mechanism, thereby effectively preventing the delayed switching mechanism from failing or being damaged.

[0017] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the mechanical delay type switching switch device of the present invention; Figure 2 is a front view of the mechanical delay type switching switch device of the present invention; Figure 3 is a right side view of the mechanical delay type switching switch device of the present invention; Figure 4 yes Figure 2 AA section view; Figure 5 yes Figure 2 BB section view; Figure 6 yes Figure 2 DD section view; Figure 7 yes Figure 3 CC section view.

[0019] In the figure: 1-housing, 11-switching chamber, 12-water inlet, 13-water outlet A, 14-water outlet B, 15-valve seat, 2-water retaining mechanism, 21-rotating shaft, 22-baffle, 23-shaft boss, 3-delayed switching switch mechanism, 31-handle, 311-boss chamber, 312-vertical tooth portion, 313-hook portion, 32-gear, 33-movable boss, 34-fixed boss, 35-return storage structure, 36-ratchet, 37-adjusting cam, 38-control lever, 39-sealing spring, 4-diaphragm, 5-damper, 6-locking mechanism, 61-locking cam, 62-holding spring. DETAILED DESCRIPTION

[0020] See also Figures 1 to 7 The mechanical delayed switching switch device of the present invention comprises a shell 1, a water retaining mechanism 2, a delayed switching switch mechanism 3 and a diaphragm 4. The shell 1 is provided with a water inlet 12, a water outlet A13 and a water outlet B14 respectively connected to a switching cavity 11. The delayed switching switch mechanism 3 can first store elastic force during user operation and then release the elastic force to make the diaphragm 4 switch the water inlet 12 on the one hand and drive the water retaining mechanism 2 to switch and isolate the water outlet A13 and the water outlet B14 on the other hand.

[0021] The delay switching mechanism 3 includes a gear 32 , a ratchet 36 and a position adjustment cam 37 . The gear 32 is rotatably connected in the housing 1 , and the position adjustment cam 37 is indirectly connected to the gear 32 via the ratchet 36 .

[0022] The delayed switching switch mechanism 3 has a handle 31 slidably connected in the slideway of the shell 1 and a return force storage structure 35. The return force storage structure 35 can store elastic force when the handle 31 is manually pressed down by the user and release the elastic force after the handle 31 is released by the user. The gear 32 is meshed with the handle 31 through the vertical tooth portion 312. The ratchet 36 only rotates one mating tooth during manual depression, and drives the adjustment cam 37 to rotate with the gear 32 only during the upward movement of the handle 31.

[0023] The delayed switching switch mechanism 3 also includes a control rod 38. The housing 1 is provided with a water inlet channel connected to the water inlet 12 and a valve seat 15 located in the water inlet channel and having a center hole. The adjusting cam 37 can utilize the concave-convex structure on the surface to move the control rod 38 away from or close to the valve seat 15 during rotation to open or close the center hole.

[0024] A sealing member is disposed on the control rod 38 and is arranged opposite to the central hole. A sealing spring 39 is also disposed between the control rod 38 and the housing 1 .

[0025] The water-blocking mechanism 2 includes a rotating shaft 21, a baffle 22 and an axial boss 23. The rotating shaft 21 is rotatably connected to the switching cavity 11. The baffle 22 is fixed on the rotating shaft 21 and can block the water outlet A13 or the water outlet B14 as the rotating shaft 21 rotates. The axial boss 23 is installed on the rotating shaft 21 and extends into the vertical slide. A boss assembly is provided on the handle 31, which can rotate the rotating shaft 21 by hitting the axial boss 23.

[0026] The boss assembly is composed of a movable boss 33 and a fixed boss 34 respectively located on the left and right sides of the shaft boss 23 . A boss chamber 311 is provided on the handle 31 for receiving the movable boss 33 when the handle 31 moves downward.

[0027] The housing 1 further comprises a damper 5 , which is installed on the housing 1 and can reduce the upward return speed of the handle 31 .

[0028] The housing 1 is also provided with a locking mechanism 6 which can limit the handle 31 from being manually pressed down during the upward resetting of the handle 31 .

[0029] The locking mechanism 6 includes a locking cam 61 and a retaining spring 62. The locking cam 61 is rotatably connected to the housing 1. The retaining spring 62 is installed between the locking cam 61 and the housing 1. The locking cam 61 can limit the downward movement of the handle 31 by interlocking with the hook portion 313 during the upward reset of the handle 31, and can automatically release the interlocking relationship with the hook portion 313 when the handle 31 is reset upward into place.

[0030] Working process of the present invention: When in use, the user first manually presses down the handle 31 to allow the return force storage structure 35 to store full energy, and then releases the handle 31 to allow the return force storage structure 35 to drive the handle 31 to reset upward through elastic force; during the upward reset of the handle 31, the delayed switching switch mechanism 3 can automatically work to complete the valve switching and water path switching operations (first, the delayed switching switch mechanism 3 opens the diaphragm 4, so that water enters the switching cavity 11 through the water inlet 12 and flows out along the water outlet A13; after a certain period of time, the delayed switching switch mechanism 3 first closes the diaphragm 4, and at the same time switches the water outlet position from the water outlet A13 to the water outlet B14, and then opens the diaphragm 4, so that water enters the switching cavity 11 through the water inlet 12 and flows out along the water outlet B14; in addition, the above-mentioned control is designed as two control points, and can be cycled multiple times as needed).

[0031] As for the valve switch component of the delayed switching switch mechanism 3, during the period when the return force storage structure 35 drives the handle 31 to reset upward, the gear 32 can rotate with the upward movement of the vertical tooth portion 312 and use the ratchet 36 to drive the adjustment cam 37 to rotate, and the control rod 38 can cooperate with the sealing spring 39 to use the sealing member to open or close the center hole of the valve seat 15 because the bottom of the control rod 38 abuts against the concave-convex structure on the surface of the adjustment cam 37 (the surface of the adjustment cam 37 is provided with platforms of different heights) When the control rod 38 is in the depression on the surface, the center hole is sealed by the seal, and the diaphragm 4 cuts off the water inlet path (i.e., closes the valve); when the bottom end of the control rod 38 abuts against the protrusion on the surface of the adjusting cam 37, the center hole is opened, and the diaphragm 4 is lifted by the water flow due to the pressure relief of the back pressure chamber so that the water inlet 12 can normally enter the water (i.e., open the valve)); the ratchet 36 will not transmit the rotation of the gear 32 to the adjusting cam 37 during the period when the user manually presses down the handle 31 (i.e., the ratchet 36 will only rotate with the adjusting cam 37 following the gear 32 during the period when the return storage structure 35 drives the handle 31 to reset upward).

[0032] For the components used for water circuit switching of the delayed switching switch mechanism 3, when the return-to-position storage structure 35 drives the handle 31 to move upward to a certain position, the movable boss 33 will first collide with the shaft boss 23 to drive the rotating shaft 31 and the baffle 22 to rotate and complete the first water circuit switching (such as the water outlet position is switched from the water outlet B14 to the water outlet A13); the fixed boss 34 will also collide with the shaft boss 23 to drive the rotating shaft 31 and the baffle 22 to rotate and complete the second water circuit switching (such as the water outlet position is switched from the water outlet A13 to the water outlet B14) after the handle 31 continues to return upward for a distance; in the process of the user manually pressing down the handle 31, the movable boss 33 will gradually be retracted into the boss chamber 311 (that is, when the handle 31 is pressed down into place, the movable boss 33 is also reset, thereby avoiding the movable boss 33 from causing water circuit switching in advance during the period when the handle 31 is manually pressed down by the user).

[0033] In addition, since the housing 1 is provided with a damper 5 connected to the position adjustment cam 37 , the damper 5 can be used to limit the speed at which the handle 31 returns upward.

[0034] While the return force storage structure 35 drives the handle 31 to return upward, if the user presses the handle 31 again, the locking mechanism 6 can interlock the locking cam 61 with the hook 313 located on the handle 31 to prevent the handle 31 from being pressed down (this interlocking will only be released when the handle 31 returns to its original position).

[0035] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A mechanical delay type switching device, characterized in that: The invention comprises a housing (1), a water retaining mechanism (2), a delayed switching mechanism (3) and a diaphragm (4); the housing (1) is provided with a water inlet (12), a water outlet A (13) and a water outlet B (14) respectively connected to a switching chamber (11); the delayed switching mechanism (3) can first store elastic force during user operation and then release the elastic force to enable the diaphragm (4) to switch the water inlet (12) on the one hand and drive the water retaining mechanism (2) to switch and isolate the water outlet A (13) and the water outlet B (14) on the other hand.

2. The mechanical delay type switching device according to claim 1, characterized in that: The delayed switching switch mechanism (3) comprises a gear (32), a ratchet (36) and a position adjustment cam (37); the gear (32) is rotatably connected in the housing (1); and the position adjustment cam (37) is indirectly connected to the gear (32) via the ratchet (36).

3. The mechanical delay type switching device according to claim 2, characterized in that: The delay switching mechanism (3) comprises a handle (31) slidably connected in a slideway of the housing (1) and a return force storage structure (35). The return force storage structure (35) can store elastic force when the handle (31) is manually pressed down by a user and can release the elastic force after the handle (31) is released by the user. The gear (32) is meshed with the handle (31) via a vertical tooth portion (312). The ratchet (36) only rotates through one mating tooth during manual pressing and drives the adjustment cam (37) to rotate along with the gear (32) only during the upward movement of the handle (31).

4. The mechanical delay type switching device according to claim 3, characterized in that: The delayed switching mechanism (3) further comprises a control rod (38), the housing (1) is provided with a water inlet channel connected to the water inlet (12), and a valve seat (15) located in the water inlet channel and having a central hole, and the adjustment cam (37) can use the concave-convex structure on the surface to make the control rod (38) move away from or close to the valve seat (15) during rotation to open or close the central hole.

5. The mechanical delay type switching device according to claim 4, characterized in that: A sealing member is provided on the control rod (38) and is arranged opposite to the central hole. A sealing spring (39) is also provided between the control rod (38) and the housing (1).

6. The mechanical delay type switching device according to claim 3, characterized in that: The water retaining mechanism (2) comprises a rotating shaft (21), a baffle (22) and an axial boss (23); the rotating shaft (21) is rotatably connected to the switching chamber (11); the baffle (22) is fixed on the rotating shaft (21) and can block the water outlet A (13) or the water outlet B (14) during the rotation of the rotating shaft (21); the axial boss (23) is installed on the rotating shaft (21) and extends into the vertical slideway; and a boss assembly is provided on the handle (31) which can cause the rotating shaft (21) to rotate by striking the axial boss (23).

7. The mechanical delay type switching device according to claim 6, characterized in that: The boss assembly is composed of a movable boss (33) and a fixed boss (34) respectively located on the left and right sides of the shaft boss (23), and a boss chamber (311) is provided on the handle (31) for receiving the movable boss (33) when the handle (31) moves downward.

8. The mechanical delay type switching device according to claim 3, characterized in that: It also includes a damper (5), which is mounted on the housing (1) and can reduce the upward return speed of the handle (31).

9. The mechanical delay type switching device according to any one of claims 3 to 8, characterized in that: A locking mechanism (6) is also provided on the housing (1) and can limit the handle (31) from being manually pressed downward during the period when the handle (31) is reset upward.

10. The mechanical delay type switching device according to claim 9, characterized in that: The locking mechanism (6) comprises a locking cam (61) and a retaining spring (62); the locking cam (61) is rotatably connected to the housing (1); the retaining spring (62) is installed between the locking cam (61) and the housing (1); the locking cam (61) can not only restrict the downward movement of the handle (31) by interlocking with the hook portion (313) during the upward reset of the handle (31), but also can automatically release the interlocking relationship with the hook portion (313) when the handle (31) is reset upward to its correct position.

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