A wrench device for a drain valve

Abstract

The present invention discloses a wrench device for a drain valve, comprising a fixed part, a transmission mechanism, and a wrench rotatably mounted on the fixed part and capable of forward and reverse rotation relative to the fixed part, the wrench being connected to a starter of the drain valve through the transmission mechanism, and the fixed part and the wrench being provided with a matching limiting unit capable of switching between a first state and a second state; when the limiting unit is in the first state, the limiting unit limits the wrench to only forward rotation relative to the fixed part; when the limiting unit is in the second state, the limiting unit limits the wrench to only reverse rotation; or, when the limiting unit is in the first state, the limiting unit limits the amplitude of the wrench's reverse rotation relative to the fixed part, and enables the wrench to rotate forward relative to the fixed part; when the limiting unit is in the second state, the limiting unit limits the amplitude of the wrench's forward rotation relative to the fixed part, and enables the wrench to rotate reversely relative to the fixed part. The wrench device of the present invention is more flexible to install and more versatile.

Description

Technical Field

[0001] The invention relates to the technical field of bathroom drain valves, in particular to a wrench device for a drain valve. Background Art

[0002] A wrench device for controlling a drain valve in the water tank for draining water is usually installed on the side wall (such as the left / right side wall or the front side wall) of the toilet water tank. The existing wrench device usually includes a fixed part fixedly installed on the side wall of the water tank, a wrench rotatably mounted on the fixed part, and a transmission mechanism connected to the wrench. The wrench is linked to the starter of the drain valve through the transmission mechanism, so that when the wrench rotates, the starter can be driven to move to open the drain valve for draining water. The wrench is generally designed to be able to rotate only in one direction relative to the fixed part or to be able to rotate in both directions relative to the fixed part.

[0003] For a wrench device in which the wrench can only rotate in one direction relative to the fixed part, considering the user's usage habits, the wrench is usually set to rotate when the wrench is pressed or toggled downward to drive the starter to move and then open the drain valve to drain water. The wrench is generally designed to rotate in one direction to open the drain, and a limit structure is set to restrict the wrench from rotating in the opposite direction (that is, the wrench cannot rotate when the wrench is toggled upward). If this type of wrench device is designed to be installed on the left side wall of the water tank and the correct installation direction of the wrench is that the wrench handle faces the front wall of the water tank, when When this type of wrench device is installed on the right side wall of the water tank with the wrench handle facing the front wall of the water tank, the way of using the wrench is reversed (i.e., the drain valve can be opened to drain water only by pushing the wrench upwards, and the wrench cannot be turned when the wrench is pressed downwards or pushed downwards). This cannot meet the user's usage habits and affects the user experience, so that the installation position of the existing wrench device is fixed (i.e., the wrench device designed to be installed on the left side wall of the water tank can only be installed on the left side wall of the water tank to meet the user's usage habits), and the scope of application is narrow.

[0004] When the wrench is pressed or toggled, the starter is rotated to open the drain valve for large-volume drainage, and when the wrench is toggled upward, the starter is rotated to open the drain valve for small-volume drainage. If this type of wrench device is designed to be installed on the left side wall of the water tank and the correct installation direction of its wrench is with the wrench handle facing the front wall of the water tank, when this type of wrench device is installed on the right side wall of the water tank with the wrench handle facing the front wall of the water tank, the wrench is used in the opposite way (i.e., when the wrench is toggled upward, the drain valve is opened for large-volume drainage, and when the wrench is pressed downward or toggled downward, the drain valve is opened for small-volume drainage). This also fails to meet the user's usage habits and affects the user experience, so that the installation position of the existing wrench device is fixed and the scope of application is narrow. Summary of the invention

[0005] The invention provides a wrench device for a drain valve, which overcomes the shortcomings of the wrench devices in the prior art.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a wrench device for a drain valve, comprising a fixed part, a wrench and a transmission mechanism, the wrench is rotatably mounted on the fixed part and can rotate forwardly and reversely relative to the fixed part, the wrench is transmission-connected to a starter of the drain valve through the transmission mechanism, a limiting unit is provided between the fixed part and the wrench, and the limiting unit can switch between a first state and a second state;

[0007] When the limiting unit is in the first state, the limiting unit limits the wrench to only be able to rotate in the forward direction relative to the fixed part; when the limiting unit is in the second state, the limiting unit limits the wrench to only be able to rotate in the reverse direction relative to the fixed part;

[0008] Alternatively, when the limiting unit is in the first state, the limiting unit limits the range of reverse rotation of the wrench relative to the fixed part, and enables the wrench to rotate forwardly relative to the fixed part; when the limiting unit is in the second state, the limiting unit limits the range of forward rotation of the wrench relative to the fixed part, and enables the wrench to rotate reversely relative to the fixed part.

[0009] Preferably, the limiting unit comprises a limiting member movably arranged on one of the wrench and the fixed part, and a first limiting portion and a second limiting portion fixedly arranged on the other of the wrench and the fixed part, and the limiting member can move between a first position and a second position relative to the wrench or the fixed part;

[0010] When the limiting member is located at the first position, the limiting unit is in the first state, and the limiting member cooperates with the first limiting portion to limit the wrench to only rotate in the forward direction relative to the fixed portion; when the limiting member is located at the second position, the limiting unit is in the second state, and the limiting member cooperates with the second limiting portion to limit the wrench to only rotate in the reverse direction relative to the fixed portion;

[0011] Alternatively, when the limit member is located at the first position, the limit unit is in the first state, and the limit member can cooperate with the first limit portion to limit the range of reverse rotation of the wrench relative to the fixed part; when the limit member is located at the second position, the limit unit is in the second state, and the limit member can cooperate with the second limit portion to limit the range of forward rotation of the wrench relative to the fixed part.

[0012] Preferably, the limiting unit further comprises a third limiting portion and a fourth limiting portion, and the third limiting portion, the fourth limiting portion and the limiting member are all arranged on the same one of the wrench and the fixing portion;

[0013] When the limiting member is located at the first position, the third limiting portion can cooperate with the second limiting portion to limit the range of positive rotation of the wrench relative to the fixed part; when the limiting member is located at the second position, the fourth limiting portion can cooperate with the first limiting portion to limit the range of reverse rotation of the wrench relative to the fixed part.

[0014] Preferably, the limiting member is slidably arranged on the wrench, the fixed part is provided with a limiting groove, the first limiting portion is the starting end of the limiting groove, the second limiting portion is the end of the limiting groove, the wrench is provided with a limiting protrusion movably matched in the limiting groove, the third limiting portion is one side of the limiting protrusion, and the fourth limiting portion is the other side of the limiting protrusion; when the limiting member is located at the first position, a part of the limiting member enters the limiting groove; when the limiting member is located at the second position, another part of the limiting member enters the limiting groove;

[0015] Alternatively, the limit member is slidably arranged on the wrench, a limit groove is provided on the wrench, the third limit portion is the starting end of the limit groove, the fourth limit portion is the end of the limit groove, the fixed part is provided with a limit protrusion movably fitted in the limit groove, the first limit portion is one side of the limit protrusion, and the second limit portion is the other side of the limit protrusion; when the limit member is in the first position, a part of the limit member enters the limit groove; when the limit member is in the second position, another part of the limit member enters the limit groove.

[0016] Preferably, the wrench includes a trigger handle and a rotating shaft connected to the trigger handle, one end of the rotating shaft can be rotatably passed through the fixed part and then be transmission-connected to the transmission mechanism; the limiting member is a limiting pin, and the rotating shaft is provided with a positioning hole one whose two ends can be respectively communicated with the limiting groove, and the limiting pin is slidably arranged in the positioning hole one; when the limiting member is in the first position, the first end of the limiting pin extends out of the positioning hole one and enters the limiting groove, and at the same time, the second end of the limiting pin retracts into the positioning hole one; when the limiting member is in the second position, the second end of the limiting pin extends out of the positioning hole one and enters the limiting groove, and at the same time, the first end of the limiting pin retracts into the positioning hole one.

[0017] Preferably, the limiting member is slidably arranged on the fixed part, the fixed part is provided with a limiting groove, the third limiting portion is the starting end of the limiting groove, the fourth limiting portion is the end of the limiting groove, the wrench is provided with a limiting protrusion movably matched in the limiting groove, the first limiting portion is one side of the limiting protrusion, and the second limiting portion is the other side of the limiting protrusion; when the limiting member is in the first position, a part of the limiting member enters the limiting groove; when the limiting member is in the second position, another part of the limiting member enters the limiting groove;

[0018] Alternatively, the limiting member is slidably arranged on the fixed part, a limiting groove is provided on the wrench, the first limiting portion is the starting end of the limiting groove, the second limiting portion is the end of the limiting groove, the fixed part is provided with a limiting protrusion movably fitted in the limiting groove, the third limiting portion is one side of the limiting protrusion, and the fourth limiting portion is the other side of the limiting protrusion; when the limiting member is in the first position, a part of the limiting member enters the limiting groove; when the limiting member is in the second position, another part of the limiting member enters the limiting groove.

[0019] Preferably, the wrench includes a handle and a rotating shaft connected to the handle, one end of the rotating shaft can rotatably pass through the fixed part and then be transmission connected to the transmission mechanism; the limiting member includes a limiting block 1 and a limiting block 2, the fixed part is provided with a positioning groove 1 and a positioning groove 2 which are respectively communicated with the limiting groove, the positioning groove 1 and the positioning groove 2 are located on both sides of the rotating shaft and are arranged opposite to each other, the limiting block 1 and the limiting block 2 are respectively slidably arranged in the positioning groove 1 and the positioning groove 2; when the limiting member is in the first position, the limiting block 1 extends out of the positioning groove 1 and extends into the limiting groove to cooperate with the first limiting part, and the limiting block 2 is retracted into the positioning groove 2; when the limiting member is in the second position, the limiting block 2 extends out of the positioning groove 2 and extends into the limiting groove to cooperate with the second limiting part, and the limiting block 1 is retracted into the positioning groove 1.

[0020] Preferably, the fixing part includes a fixing piece, the fixing piece is provided with an axial hole for the rotating shaft to movably pass through, the side wall of the axial hole is provided with a positioning hole 2 and a positioning hole 3 which are relatively arranged, the outer side of the fixing piece is provided with a limiting sleeve, the positioning groove 1 is formed by the side wall of the positioning hole 2 and the limiting sleeve, the positioning groove 2 is formed by the positioning hole 3 and the limiting sleeve, and the limiting sleeve can limit the limiting block 1 from slipping out of the positioning hole 2 and limit the limiting block 2 from slipping out of the positioning hole 3.

[0021] Preferably, when the limiting member is located at the first position, the limiting member can cooperate with the first limiting portion to limit the range of reverse rotation of the wrench relative to the fixed part to a first angle, and the third limiting portion can cooperate with the second limiting portion to limit the range of forward rotation of the wrench relative to the fixed part to a second angle;

[0022] When the limit member is located at the second position, the limit member can cooperate with the second limit portion to limit the range of positive rotation of the wrench relative to the fixed part to the first angle, and the fourth limit portion can cooperate with the first limit portion to limit the range of reverse rotation of the wrench relative to the fixed part to the second angle; wherein the first angle is smaller than the second angle.

[0023] Preferably, it also includes a box body fixed relative to the fixed part, the transmission mechanism is installed in the box body, and the front and back sides of the box body are provided with connecting structures that can be fixedly connected to the fixed part; when the fixed part is connected to the connecting structure on the front side of the box body, the limiting unit can switch to the first state; when the fixed part is connected to the connecting structure on the back side of the box body, the limiting unit can switch to the second state.

[0024] Preferably, the limiting member can move between the first position and the second position under the action of an external force or its own gravity, and the external force is a force applied to the limiting member by the outside world.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The present invention provides a limiting unit between the fixed part and the wrench, and the limiting unit can switch between a first state and a second state. When the limiting unit is in the first state, the limiting unit limits the wrench to only be able to rotate forwardly relative to the fixed part; when the limiting unit is in the second state, the limiting unit limits the wrench to only be able to rotate backwardly relative to the fixed part (or, when the limiting unit is in the first state, the limiting unit limits the amplitude of the reverse rotation of the wrench relative to the fixed part, and enables the wrench to rotate forwardly relative to the fixed part; when the limiting unit is in the second state, the limiting unit limits the amplitude of the forward rotation of the wrench relative to the fixed part, and enables the wrench to rotate backwardly relative to the fixed part), so that the wrench device of the present invention can be installed on the left side wall or the right side wall of the water tank according to actual needs, and when the wrench device of the present invention is installed on the left side wall or the right side wall of the water tank, the trigger handle of the wrench can be selected. They are all set forward, and the execution effect of pulling the wrench downward is consistent, and the execution effect of pulling the wrench upward is also consistent (for example, when the wrench is pulled downward, the drain valve is opened for drainage, and when the wrench is pulled upward, the wrench cannot be turned and the drainage cannot be opened; or, when the wrench is pulled downward, the drain valve is opened for large-displacement drainage, and when the wrench is pulled upward, the drain valve is opened for small-displacement drainage), to meet the user's usage habits; or, the wrench device of the present invention can also be flexibly selected according to actual needs to be installed on the front side wall of the water tank with the wrench handle facing left or right, and no matter whether the wrench handle is set to the left or right, the execution effect of pulling the wrench downward is consistent, and the execution effect of pulling the wrench upward is also consistent, to meet the user's usage habits, with a wide range of applications and more flexible installation positions, which greatly improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the three-dimensional structure of the first embodiment of the present invention Figure 1 (the limit unit is in the first state);

[0028] Figure 2 It is a front view of the first embodiment of the present invention Figure 1 (This view is a view of the wrench device when facing the side wall of the water tank on which the wrench device is installed, and the limiting unit is in the first state);

[0029] Figure 3 is a cross-sectional view of the first embodiment of the present invention Figure 1 (the limit unit is in the first state);

[0030] Figure 4 is a cross-sectional view of the first embodiment of the present invention Figure 2 (the limit unit is in the first state);

[0031] Figure 5 is a cross-sectional view of the first embodiment of the present invention Figure 3 (the limit unit is in the first state);

[0032] Figure 6 Schematic diagram of the three-dimensional structure of the first embodiment of the present invention Figure 2 (the limit unit is in the second state);

[0033] Figure 7 It is a front view of the first embodiment of the present invention Figure 2 (This view is a view of the wrench device when facing the side wall of the water tank on which the wrench device is installed, and the limiting unit is in the second state);

[0034] Figure 8 is a cross-sectional view of the first embodiment of the present invention Figure 4 (the limit unit is in the second state);

[0035] Fig. 9 is a cross-sectional view of the first embodiment of the present invention Figure 5 (the limit unit is in the second state);

[0036] Fig.10 is a cross-sectional view of the first embodiment of the present invention Figure 6 (the limit unit is in the second state);

[0037] Fig.11 It is a schematic diagram of a partial decomposition structure of the first embodiment of the present invention;

[0038] Fig.12 Schematic diagram of the three-dimensional structure of the second embodiment of the present invention Figure 1 (the limit unit is in the first state);

[0039] Fig.13 This is a front view of the second embodiment of the present invention Figure 1 (This view is a view of the wrench device when facing the side wall of the water tank on which the wrench device is installed, and the limiting unit is in the first state);

[0040] Fig.14 is a cross-sectional view of the second embodiment of the present invention Figure 1 (the limit unit is in the first state);

[0041] Fig.15 is a cross-sectional view of the second embodiment of the present invention Figure 2 (the limit unit is in the first state);

[0042] Fig.16 Schematic diagram of the three-dimensional structure of the second embodiment of the present invention Figure 2 (the limit unit is in the second state);

[0043] Fig.17 This is a front view of the second embodiment of the present invention Figure 2 (This view is a view of the wrench device when facing the side wall of the water tank on which the wrench device is installed, and the limiting unit is in the second state);

[0044] Fig.18 is a cross-sectional view of the second embodiment of the present invention Figure 3 (the limit unit is in the second state);

[0045] Fig.19 is a cross-sectional view of the second embodiment of the present invention Figure 4 (the limit unit is in the second state);

[0046] Fig. 20 It is a schematic diagram of the partial decomposition structure of the second embodiment of the present invention.

[0047] The following are the descriptions of the reference numerals:

[0048] 1-fixed part, 2-wrench, 3-transmission mechanism, 4-limiting member, 5-starting member, 6-buffer sleeve, 7-box body, 11-fixed member, 111-limiting groove, 1111-first limiting part, 1112-second limiting part, 112-fifth limiting part, 113-axis hole, 114-positioning hole two, 115-positioning hole three, 116-limiting step one, 117-limiting groove, 1171-third limiting part, 1172-fourth limiting part, 12-first nut, 13-wrench plastic pad, 14-wrench flat pad, 15-limiting sleeve, 21-handle, 22-rotating shaft, 221- Limiting protrusion, 2211-third limiting part, 2212-fourth limiting part, 222-positioning hole one, 223-limiting protrusion, 2231-first limiting part, 2232-second limiting part, 31-rotating disk, 32-torsion spring, 41-limiting block one, 411-limiting step two, 42-limiting block two, 61-dispatch groove, 71-first box body, 711-mounting hole, 72-second box body, 73-second nut. DETAILED DESCRIPTION

[0049] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments; however, the wrench device for a drain valve of the present invention is not limited to the embodiments.

[0050] Embodiment 1 (the limiting member is provided on the wrench. When the limiting unit is in the first state, the wrench cannot rotate in the reverse direction relative to the fixed part; when the limiting unit is in the second state, the wrench cannot rotate in the forward direction relative to the fixed part)

[0051] See also Figures 1 to 11As shown, a wrench device for a drain valve of the present invention is installed on the side wall of a toilet water tank (not shown in the figure) (specifically, it can be the front, rear, left or right side wall of the water tank, which can be selected according to actual needs), and the wrench device includes a fixed part 1, a wrench 2 and a transmission mechanism 3. The fixed part 1 is fixedly installed on the side wall (not shown in the figure) of the toilet water tank (not shown in the figure), the wrench 2 is rotatably mounted on the fixed part 1 and can rotate forward and reverse relative to the fixed part 1, and the wrench 2 is transmission-connected to a starter 5 of the drain valve (not shown in the figure) through the transmission mechanism 3, so that when the wrench 2 rotates forward or reversely relative to the fixed part 1, it can drive the starter 5 to move to open the drain valve for drainage. A limit unit is provided between the fixed part 1 and the wrench 2, and the limit unit can switch between a first state and a second state; when the limit unit is in the first state, the limit unit limits the wrench 2 to only be able to rotate forward relative to the fixed part 1 (that is, the wrench 2 can rotate forward relative to the fixed part 1, but cannot rotate backward); when the limit unit is in the second state, the limit unit limits the wrench 2 to only be able to rotate backward relative to the fixed part 1 (that is, the wrench 2 can rotate backward relative to the fixed part 1, but cannot rotate forward).

[0052] It should be noted that, in this embodiment, Figures 1 to 5 The middle limit unit is in the first state, Figures 6 to 10 The middle limiting unit is in the second state. In this embodiment, when the wrench device is installed on the left side wall of the water tank, the limiting unit is in the first state and the trigger 21 of the wrench 2 is set toward the front side wall of the water tank in the initial state; when the wrench device is installed on the right side wall of the water tank, the limiting unit is in the second state and the trigger 21 of the wrench 2 is set toward the front side wall of the water tank in the initial state; when the wrench device is installed on the front side wall of the water tank and the trigger 21 of the wrench 2 is set toward the right side wall of the water tank in the initial state, the limiting unit is in the first state; when the wrench device is installed on the front side wall of the water tank and the trigger 21 of the wrench 2 is set toward the left side wall of the water tank in the initial state, the limiting unit is in the second state.

[0053] See also Figures 3 to 5 and Figures 8 to 11As shown, in this embodiment, the limiting unit includes a limiting member 4 movably arranged on the wrench 2, a first limiting portion 1111 and a second limiting portion 1112 fixedly arranged on the fixed part 1, the limiting member 4 can move between the first position and the second position relative to the wrench 2, and the limiting unit also includes a third limiting portion 2211 and a fourth limiting portion 2212, and the third limiting portion 2211 and the fourth limiting portion 2212 are both fixedly arranged on the wrench 2; when the limiting member 4 is located at the first position, the limiting unit is in the first state, the limiting member 4 and the first limiting portion 1111 are limitedly matched to limit the wrench 2 to only be able to rotate in the forward direction relative to the fixed part 1, and the third limiting portion 2211 can be limitedly matched with the second limiting portion 1112 to limit the wrench 2 The amplitude of forward rotation; when the limit member 4 is in the second position, the limit unit is in the second state, the limit member 4 and the second limit portion 1112 are limited and cooperated to limit the wrench 2 to only rotate in the reverse direction relative to the fixed part 1, and the fourth limit portion 2212 can be limited and cooperated with the first limit portion 1111 to limit the amplitude of reverse rotation of the wrench 2.

[0054] In this embodiment, the stopper 4 can move between the first position and the second position under the action of its own gravity. Of course, in other embodiments, the stopper 4 can also move between the first position and the second position under the action of an external force applied to the stopper 4, such as: the stopper 4 is driven to move to the first position or the second position by manpower, and then the stopper 4 is positioned in the first position or the second position by a separately provided stopper structure; or the stopper moves between the first position and the second position under the action of an external force such as the elastic force of a spring or the magnetic force of a magnet.

[0055] See also Figures 3 to 5 and Figures 8 to 11 As shown, in this embodiment, the limiting member 4 is slidably arranged on the wrench 2 and can linearly reciprocate between the first position and the second position relative to the wrench 2 under the action of gravity. The fixed part 1 is provided with a limiting groove 111, the first limiting portion 1111 is the starting end of the limiting groove 111, the second limiting portion 1112 is the end of the limiting groove 111, and the wrench 2 is provided with a limiting protrusion 221 that is movably matched in the limiting groove 111, the third limiting portion 2211 is one side of the limiting protrusion 221, and the fourth limiting portion 2212 is the other side of the limiting protrusion 221; please refer to Figure 4 and Figure 5 As shown, when the limiting member 4 is in the first position, a portion of the limiting member 4 (i.e., one end of the limiting member 4) enters the limiting groove 111 and can cooperate with the first limiting portion 1111 to limit the wrench 2 to only rotate in the forward direction, and the third limiting portion 2211 can cooperate with the second limiting portion 1112 to limit the range of the forward rotation of the wrench 2; see Fig. 9 and Fig.10As shown, when the limit member 4 is in the second position, the other part of the limit member 4 (i.e., the other end of the limit member 4) enters the limit groove 111 and can cooperate with the second limit portion 1112 to limit the wrench 2 to only rotate in the reverse direction, and the fourth limit portion 2212 can cooperate with the first limit portion 1111 to limit the range of reverse rotation of the wrench 2.

[0056] See also Figures 1 to 11 In this embodiment, the wrench 2 includes a trigger 21 and a rotating shaft 22 connected to the trigger 21, and one end of the rotating shaft 22 away from the trigger 21 can be rotatably passed through the fixed part 1 and is transmission-connected to the transmission mechanism 3, and the limiting groove 111 is arc-shaped and is arranged around the rotating shaft 22; the limiting member 4 is a limiting pin, and a positioning hole 222 is opened on the rotating shaft 22, and the two ends of the positioning hole 222 are respectively connected to the limiting groove 111, and the limiting pin is slidably arranged in the positioning hole 222; when the limiting pin is located at the first position, the first end of the limiting pin extends out of the positioning hole 222 and enters the limiting groove 111, and at the same time, the second end of the limiting pin retracts into the positioning hole 222; when the limiting member 4 is located at the second position, the second end of the limiting pin extends out of the positioning hole 222 and enters the limiting groove 111, and at the same time, the first end of the limiting pin retracts into the positioning hole 222.

[0057] Specifically, in this embodiment, the rotating shaft 22 is fixedly connected to one end of the trigger 21, the trigger 21 and the rotating shaft 22 are an integrated structure, and the limiting protrusion 221 is provided on the rotating shaft 22; in this embodiment, the positioning hole 1 222 is a straight hole, and after the wrench device is installed on the side wall of the water tank, the axis of the positioning hole 1 222 is arranged vertically, so that the limiting member 4 can slide to the first position or the second position under its own gravity. Of course, in other embodiments, the limiting protrusion 221 can also be provided on the trigger 21, and the specific implementation method is not limited to this.

[0058] See also Figures 1 to 11 In this embodiment, the fixing part 1 includes a fixing member 11 that passes through the side wall of the water tank in a non-rotatable manner and a first nut 12 that is threadedly engaged with the fixing member 11. The fixing member 11 is provided with an external thread that can be threadedly engaged with the internal thread of the first nut 12. A fifth limiting portion 112 is provided at one end of the fixing member 11, and the side wall of the water tank is sandwiched between the fifth limiting portion 112 and the first nut 12. The wrench 2 is rotatably mounted on the fixing member 11, and a limiting groove 111 is provided on the fixing member 11.

[0059] Specifically, in this embodiment, a through hole (not shown in the figure) for the fixing member 11 to pass through is provided on the side wall of the water tank, the trigger 21 and the fifth limiting portion 112 are both located on the outside of the side wall of the water tank, and the first nut 12 and the transmission mechanism 3 are both located on the inside of the side wall of the water tank. The fixing member 11 is provided with an axial hole 113 for the rotating shaft 22 to movably pass through, and the end of the rotating shaft 22 away from the trigger 21 passes through the axial hole 113 and is connected to the transmission mechanism 3 in transmission, and the limiting groove 111 is specifically provided on the inner wall of the axial hole 113; the fixing part 1 also includes a wrench flat washer 14 and a wrench plastic washer 13, and the wrench flat washer 14 and the wrench plastic washer 13 are both sleeved on the outer periphery of the fixing member 11 and located between the first nut 12 and the side wall of the water tank.

[0060] See also Figure 3 , Figure 4 , Figure 8 , Fig. 9 and Fig.11 In this embodiment, a buffer sleeve 6 is sleeved between the rotating shaft 22 and the fixed part 1, that is, a buffer sleeve 6 is sleeved between the rotating shaft 22 and the inner wall of the shaft hole 113, and the buffer sleeve 6 can rotate with the rotating shaft 22; the buffer sleeve 6 is provided with a clearance groove 61 at the two ends of the corresponding limiter 4, so that the two ends of the limiter 4 can enter or exit the limiter groove 111. On the one hand, the buffer sleeve 6 can be used to limit the limiter 4, so that the limiter 4 is limited in the positioning hole 122 and only the two ends of the limiter 4 are allowed to extend out of the positioning hole 122, so as to prevent the limiter 4 from being separated from the positioning hole 122 as a whole. During assembly, the limiter 4 is first inserted into the positioning hole 122, and then the buffer sleeve 6 is sleeved outside the rotating shaft 22, so that the installation of the limiter 4 is simpler. In addition, the buffer sleeve 6 can also be made of a material with a small friction coefficient, such as POM material, on the other hand, so that the friction between the rotating shaft 22 and the inner wall of the shaft hole 113 can be reduced, thereby reducing noise and other problems.

[0061] See also Figures 1 to 11 In this embodiment, a box body 7 is further included which is fixed relative to the fixed part 1, the transmission mechanism 3 is installed in the box body 7, and the front and back sides of the box body 7 are provided with connection structures which can be fixedly connected with the fixed part 1; as shown in FIGS. 1 to 5 , when the fixed part 1 is connected with the connection structure on the front side of the box body 7, the limiting unit can be switched to the first state; Figures 6 to 10 As shown, when the fixing part 1 is connected to the connecting structure on the back of the box body 7, the limiting unit can be switched to the second state. Figures 1 to 5 ) and the structure of the wrench device when the limit unit is in the second state (as shown Figures 6 to 10 ) is mirror-symmetrical. Figure 3 , Figure 4 , Figure 8 and Fig. 9In this embodiment, the transmission mechanism 3 includes a rotating disk 31 rotatably mounted in the box body 7 and a torsion spring 32 arranged between the rotating disk 31 and the box body 7. The rotating shaft 22 passes through the shaft hole 113 and is fixedly connected to the rotating disk 31. The rotating shaft 22 is connected to the starting member 5 of the drain valve through the rotating disk 31. The rotating disk 31 can be rotated and reset under the action of the torsion spring 32, and drive the wrench 2 to rotate and reset. The present invention provides connection structures that can be fixedly connected to the fixing part 1 on the front and back sides of the box body 7. When the fixing part 1 is connected to the connection structure on the front side of the box body 7, the limiting unit is switched to the first state, and when the fixing part 1 is connected to the connection structure on the back side of the box body 7, the limiting unit is switched to the second state, so that when the limiting unit is in the first state, the rotating shaft can pass through the front side of the box body and be fixedly connected to the front side of the rotating disk, and when the limiting unit is in the second state, the rotating shaft can pass through the back side of the box body and be fixedly connected to the back side of the rotating disk, thereby making the rotation direction of the rotating disk when the limiting unit is in the first state and the wrench rotates forwardly consistent with the rotation direction of the rotating disk when the limiting unit is in the second state and the wrench rotates reversely.

[0062] Specifically, in the present embodiment, the box body 7 comprises a first box body 71 and a second box body 72, the first box body 71 and the second box body 72 are arranged to be relatively buckled, the transmission mechanism 3 is installed in the accommodating space formed between the first box body 71 and the second box body 72, and the first box body 71 and the second box body 72 are both provided with the connecting structure; the connecting structure is a second nut 73 that can rotate relative to the box body 7, and the first box body 71 and the second box body 72 are provided with a mounting hole 711 at the position where the second nut 73 is provided, and the rotating shaft 22 is movably passed through, and the box body 7 is fixedly connected to the fixed part 1 by the screw connection between the second nut 73 and the fixing member 11.

[0063] See also Figures 1 to 11 In this embodiment, the starter 5 of the drain valve is a pull rope. Of course, in other embodiments, the starter 5 of the drain valve may also be a chain or a pull rod, and the specific implementation method is not limited to this.

[0064] The use principle of this embodiment is briefly described as follows:

[0065] See also Figures 1 to 5 , the fixing part 1 is threadedly connected to the second nut 73 on the first box body 71 (that is, the fixing part 1 is connected to the connection structure on the front of the box body 7), the rotating shaft 22 passes through the mounting hole 711 on the first box body 71 and is fixed to the front of the rotating disk 31, and the limiting member 4 slides to the first position, that is, at this time, the limiting unit is in the first state, such as Figure 2 , Figure 4 and Figure 5As shown, in the initial state, the wrench 2 is located at the initial position (at this time, the limiting protrusion 221 is located in the middle of the limiting groove 111, and the axial direction of the positioning hole 222 is parallel to the vertical direction), the first end of the limiting member 4 enters the limiting groove 111 and abuts against the first limiting portion 1111 to limit the wrench 2 to only rotate in the forward direction, so that Figure 2 and Figure 5 Take the direction shown in as an example, at this time, the wrench 2 can only be rotated clockwise; when in use, Figure 2 As shown, the user follows Figure 2 Press or push the wrench 2 downward in the direction indicated by F to make it rotate forward relative to the fixed part 1 (at this time, Figure 2 and Figure 5 Taking the direction shown in as an example, the wrench 2 rotates clockwise), the limit member 4 separates from the first limit portion 1111 until the third limit portion 2211 abuts and cooperates with the second limit portion 1112 to limit the range of positive rotation of the wrench 2. At the same time, the wrench 2 drives the starter 5 of the drain valve to move through the rotating disk 31 to open the drain valve for drainage; after the wrench 2 is released, the rotating disk 31 rotates and resets under the action of the torsion spring 32, and drives the wrench 2 to rotate and reset to the initial position, and the limit member 4 abuts and cooperates with the first limit portion 1111 again.

[0066] See also Figures 6 to 10 As shown, the fixing part 1 is threadedly connected with the second nut 73 on the second box body 72 (that is, the fixing part 1 is connected with the connecting structure on the reverse side of the box body 7), the rotating shaft 22 passes through the mounting hole 711 on the second box body 72 and is fixedly connected with the reverse side of the rotating disk 31, and the limiting member 4 slides to the second position, that is, at this time, the limiting unit is in the second state, as shown in FIG. Figure 7 , Fig. 9 and Fig.10 As shown, in the initial state, the wrench 2 is located at the initial position (at this time, the limiting protrusion 221 is located in the middle of the limiting groove 111, and the axial direction of the positioning hole 222 is parallel to the vertical direction), the second end of the limiting member 4 enters the limiting groove 111 and abuts against the second limiting portion 1112 to limit the wrench 2 to only rotate in the reverse direction, so that Figure 7 and Fig.10 Take the direction shown in as an example, at this time, the wrench 2 can only be rotated counterclockwise; when in use, Figure 7 As shown, the user follows Figure 7 Press or push the wrench 2 downward in the direction indicated by F to make it rotate in the opposite direction relative to the fixed part 1 (at this time, Figure 7 and Fig.10Taking the direction shown in as an example, the wrench 2 rotates counterclockwise), the limit member 4 separates from the second limit portion 1112 until the fourth limit portion 2212 abuts and cooperates with the first limit portion 1111 to limit the range of reverse rotation of the wrench 2. At the same time, the wrench 2 drives the starter 5 of the drain valve to move through the rotating disk 31 to open the drain valve for drainage; after loosening the wrench 2, the rotating disk 31 rotates and resets under the action of the torsion spring 32, and drives the wrench 2 to rotate and reset to the initial position, and the limit member 4 abuts and cooperates with the second limit portion 1112 again.

[0067] From the above description of the present embodiment, it can be known that no matter the wrench device of the present embodiment is installed on the left side wall or the right side wall of the water tank in a manner that the trigger 21 of the wrench 2 faces the front side wall of the water tank, or is installed on the front side wall of the water tank in a manner that the trigger 21 of the wrench 2 faces the right side wall or the left side wall of the water tank, when the wrench 2 is pressed downward or pushed downward, the wrench 2 can be rotated to drive the starter 5 to move and thus open the drain valve for drainage, while the wrench 2 cannot be rotated when it is pushed upward, so that the wrench device of the present embodiment can be installed on different side walls of the water tank according to actual needs, and has a wider range of applications. At the same time, the direction of the wrench 2 can be installed in a manner that is convenient for user operation and conforms to the user's usage habits, thereby improving the user experience.

[0068] In other embodiments, the setting may also be reversed, with a limit groove being provided on the wrench, and a limit protrusion being provided on the fixed part and movably fitting in the limit groove, specifically, the third limit portion is the starting end of the limit groove, the fourth limit portion is the end of the limit groove, the first limit portion is one side of the limit protrusion, and the second limit portion is the other side of the limit protrusion; when the limit member is in the first position, a part of the limit member enters the limit groove and can be limitedly fitted with the first limit portion to limit the wrench to only rotate in the forward direction, and the third limit portion can be limitedly fitted with the second limit portion to limit the amplitude of the forward rotation of the wrench; when the limit member is in the second position, another part of the limit member enters the limit groove and can be limitedly fitted with the second limit portion to limit the wrench to only rotate in the reverse direction, and the first limit portion can be limitedly fitted with the fourth limit portion to limit the amplitude of the reverse rotation of the wrench.

[0069] Embodiment 2 (the limiting member is arranged on the fixed part, and when the limiting unit is in the first state, the wrench cannot rotate in the reverse direction relative to the fixed part; when the limiting unit is in the second state, the wrench cannot rotate in the forward direction relative to the fixed part)

[0070] See also Figures 12 to 20 This embodiment is basically the same as the first embodiment, and the only difference is that:

[0071] See also Fig.14 , Fig.15 , Fig.18 and Fig.19In this embodiment, the limiting unit includes a limiting member 4 movably arranged on the fixed part 1, a first limiting portion 2231 and a second limiting portion 2232 fixedly arranged on the wrench 2, the limiting member 4 can move between the first position and the second position relative to the fixed part 1, and the limiting unit also includes a third limiting portion 1171 and a fourth limiting portion 1172, and the third limiting portion 1171 and the fourth limiting portion 1172 are both fixedly arranged on the fixed part 1; when the limiting member 4 is in the first position, the limiting unit is in the first state, and the limiting member 4 and the first limiting portion 2 231 cooperate with each other to limit the wrench 2 to only rotate in the forward direction relative to the fixed part 1, and the third limiting portion 1171 can cooperate with the second limiting portion 2232 to limit the range of positive rotation of the wrench 2 relative to the fixed part 1; when the limiting member 4 is in the second position, the limiting unit is in the second state, the limiting member 4 and the second limiting portion 2232 cooperate with each other to limit the wrench 2 to only rotate in the reverse direction relative to the fixed part 1, and the fourth limiting portion 1172 can cooperate with the first limiting portion 2231 to limit the range of reverse rotation of the wrench 2 relative to the fixed part 1.

[0072] It should be noted that, in this embodiment, Figures 12 to 15 The middle limit unit is in a first state; Figures 16 to 19 The middle limiting unit is in the second state. In this embodiment, when the wrench device is installed on the left side wall of the water tank, the limiting unit is in the first state and the trigger 21 of the wrench 2 is set toward the front side wall of the water tank in the initial state; when the wrench device is installed on the right side wall of the water tank, the limiting unit is in the second state and the trigger 21 of the wrench 2 is set toward the front side wall of the water tank in the initial state; when the wrench device is installed on the front side wall of the water tank and the trigger 21 of the wrench 2 is set toward the right side wall of the water tank in the initial state, the limiting unit is in the first state; when the wrench device is installed on the front side wall of the water tank and the trigger 21 of the wrench 2 is set toward the left side wall of the water tank in the initial state, the limiting unit is in the second state.

[0073] See also Fig.14 , Fig.15 , Fig.18 and Fig.19 In this embodiment, the limiting member 4 is slidably disposed on the fixed part 1 and can linearly reciprocate between the first position and the second position relative to the fixed part 1 under the action of gravity. The fixed part 1 is provided with a limiting groove 117, and the limiting groove 117 is arc-shaped. The third limiting portion 1171 is the starting end of the limiting groove 117, and the fourth limiting portion 1172 is the end of the limiting groove 117. The wrench 2 is provided with a limiting protrusion 223 that is movably matched in the limiting groove 117. The first limiting portion 2231 is one side of the limiting protrusion 223, and the second limiting portion 2232 is the other side of the limiting protrusion 223; please refer to Fig.14 and Fig.15As shown, when the limiting member 4 is in the first position, a portion of the limiting member 4 enters the limiting groove 117 and can cooperate with the first limiting portion 2231 to limit the wrench 2 to only rotate in the forward direction, and the third limiting portion 1171 can cooperate with the second limiting portion 2232 to limit the range of the forward rotation of the wrench 2; see Fig.18 and Fig.19 As shown, when the limit member 4 is in the second position, another part of the limit member 4 enters the limit groove 117 and can cooperate with the second limit portion 2232 to limit the wrench 2 to only rotate in the reverse direction, and the fourth limit portion 1172 can cooperate with the first limit portion 2231 to limit the range of reverse rotation of the wrench 2.

[0074] See also Figure 14 to Figure 15 , Fig.18 and Fig. 20 In this embodiment, the limiting member 4 includes a limiting block 1 41 and a limiting block 2 42. The limiting block 1 41 is a part of the limiting member 4 described above, and the limiting block 2 42 is another part of the limiting member 4 described above. The fixed portion 1 is provided with a positioning groove 1 and a positioning groove 2, the positioning groove 1 and the positioning groove 2 are respectively connected to the limiting groove 117, the positioning groove 1 and the positioning groove 2 are located on both sides of the rotating shaft 22 and are arranged oppositely, and the limiting block 1 41 and the limiting block 2 42 are respectively slidably arranged in the positioning groove 1 and the positioning groove 2. When the limiting member 4 is located at the first position, the limiting block 1 41 extends out of the positioning slot 1 and extends into the limiting slot 117 to cooperate with the first limiting portion 2231, and the limiting block 2 42 is retracted into the positioning slot 2 and completely withdrawn from the limiting slot 117; when the limiting member 4 is located at the second position, the limiting block 2 42 extends out of the positioning slot 2 and extends into the limiting slot 117 to cooperate with the second limiting portion 2232, and the limiting block 1 41 is retracted into the positioning slot 1 and completely withdrawn from the limiting slot 117.

[0075] Specifically, in this embodiment, the limit member 4 is slidably arranged on the fixing member 11, the limit block 1 41 and the limit block 2 42 can reciprocate along the same straight line, the limit protrusion 223 is arranged on the rotating shaft 22, and the limit groove 117 is arranged on the fixing member 11. The limit groove 117 is specifically opened on the inner wall of the shaft hole 113 and is arranged around the side of the rotating shaft 22. The positioning groove 1 is arranged near the end of the limit groove 117 (that is, the fourth limit portion 1172) and the groove is communicated with the limit groove 117. The positioning groove 2 is arranged near the starting end of the limit groove 117 (the third limit portion 1171) and the groove is communicated with the limit groove 117.

[0076] See also Figure 14 to Figure 15 , Fig.18 and Fig. 20In this embodiment, a second positioning hole 114 and a third positioning hole 115 which are arranged opposite to each other are radially opened on the side wall of the shaft hole 113, and a limiting sleeve 15 is provided on the outer side of the fixing member 11. The first positioning groove is formed by the side wall of the second positioning hole 114 and the limiting sleeve 15, and the second positioning groove is formed by the third positioning hole 115 and the limiting sleeve 15. The limiting sleeve 15 can limit the limiting block 1 41 from escaping out of the second positioning hole 114 and limit the limiting block 2 42 from escaping out of the third positioning hole 115. The above structural design is helpful to conveniently and quickly install the limiting block 1 41 and the limiting block 2 42 into the first positioning groove and the second positioning groove respectively. During assembly, first, the limiting block 1 41 and the limiting block 2 42 are respectively installed into the positioning hole 2 114 and the positioning hole 3 115 from both sides of the fixing member 11, and then the limiting sleeve 15 is sleeved on the outside of the fixing member 11 to prevent the limiting block 1 41 and the limiting block 2 42 from sliding out of the positioning hole 2 114 and the positioning hole 3 115. Of course, in other embodiments, the positioning groove 1 and the positioning groove 2 may be directly opened on the inner wall of the shaft hole 113, and during assembly, the limiting block 1 41 and the limiting block 2 42 are respectively installed into the positioning groove 1 and the positioning groove 2 from the shaft hole 113.

[0077] After the wrench device of this embodiment is installed on the side wall of the water tank, the axes of the second positioning hole 114 and the third positioning hole 115 are arranged vertically, so that the limit block 1 41 and the limit block 2 42 can slide to the first position or the second position under the action of their own gravity.

[0078] In addition, in the present embodiment, a limiting step 116 is provided at one end of the positioning hole 114 and the positioning hole 115 close to the shaft hole 113, and a limiting step 411 is provided on the limiting block 41 and the limiting block 42 which can cooperate with the limiting step 116 to limit the depth of the limiting block 41 or the limiting block 42 entering the limiting groove 117, so as to prevent the limiting block 41 or the limiting block 42 from contacting the side wall of the rotating shaft 22 and interfering with the rotation of the rotating shaft 22.

[0079] In this embodiment, the structures and principles of the remaining parts not described (including the fixing part 1, the wrench 2, the transmission mechanism 3 and the box body 7, etc.) are consistent with those in the first embodiment and will not be described in detail here.

[0080] The use principle of this embodiment is briefly described as follows:

[0081] See also Figures 12 to 15 As shown, the fixing part 1 is threadedly connected to the second nut 73 on the first box body 71 (that is, the fixing part 1 is connected to the connection structure on the front of the box body 7), the rotating shaft 22 passes through the mounting hole 711 on the first box body 71 and is fixed to the front of the rotating disk 31, and the limiting member 4 slides to the first position, that is, at this time, the limiting unit is in the first state, as shown in FIG. Figures 13 to 15As shown, in the initial state, the wrench 2 is located at the initial position (at this time, the limiting protrusion 223 is located in the middle of the limiting groove 117, and the axial directions of the second positioning hole 114 and the third positioning hole 115 are parallel to the vertical direction), the limiting block 1 41 partially enters the limiting groove 117 and abuts against the first limiting portion 2231 to limit the wrench 2 to only rotate in the forward direction, and the limiting block 2 42 is retracted into the second positioning groove and completely withdraws from the limiting groove 117 to make way for the forward rotation of the wrench 2, so as to prevent the wrench 2 from rotating in the forward direction. Fig.13 and Fig.15 Take the direction shown in as an example, at this time, the wrench 2 can only be rotated clockwise; when in use, Fig.13 As shown, the user follows Fig.13 Press or push the wrench 2 downward in the direction indicated by F to make it rotate forward relative to the fixed part 1 (at this time, Fig.13 and Fig.15 , the wrench 2 rotates clockwise), the limit block 41 separates from the first limit portion 2231 until the second limit portion 2232 abuts and cooperates with the third limit portion 1171 to limit the range of positive rotation of the wrench 2. At the same time, the wrench 2 drives the starter 5 of the drain valve to move through the rotating disk 31 to open the drain valve for drainage; after the wrench 2 is released, the rotating disk 31 rotates and resets under the action of the torsion spring 32, and drives the wrench 2 to rotate and reset to the initial position, and the first limit portion 2231 abuts and cooperates with the limit block 41 again.

[0082] See also Figures 16 to 19 As shown, the fixing part 1 is threadedly connected with the second nut 73 on the second box body 72 (that is, the fixing part 1 is connected with the connecting structure on the reverse side of the box body 7), the rotating shaft 22 passes through the mounting hole 711 on the second box body 72 and is fixedly connected with the reverse side of the rotating disk 31, and the limiting member 4 slides to the second position, that is, at this time, the limiting unit is in the second state, as shown in FIG. Figures 17 to 19 As shown, in the initial state, the wrench 2 is located at the initial position (at this time, the limiting protrusion 223 is located in the middle of the limiting groove 117, and the axial directions of the second positioning hole 114 and the third positioning hole 115 are parallel to the vertical direction), the second limiting block 42 partially enters the limiting groove 117 and abuts against the second limiting portion 2232 to limit the wrench 2 to only rotate in the reverse direction, and the limiting block 1 41 is retracted into the positioning groove 1 and completely withdraws from the limiting groove 117 to make way for the reverse rotation of the wrench 2, so as to prevent the wrench 2 from rotating in the reverse direction. Fig.17 and Fig.19 Take the direction shown in as an example, at this time, the wrench 2 can only be rotated counterclockwise; when in use, Fig.17 As shown, the user follows Fig.17 Press or push the wrench 2 downward in the direction indicated by F to make it rotate in the opposite direction relative to the fixed part 1 (at this time, Fig.17 and Fig.19Taking the direction shown in as an example, the wrench 2 rotates counterclockwise), the limit block 2 42 separates from the second limit portion 2232 until the first limit portion 2231 abuts and cooperates with the fourth limit portion 1172 to limit the range of reverse rotation of the wrench 2. At the same time, the wrench 2 drives the starter 5 of the drain valve to move through the rotating disk 31 to open the drain valve for drainage; after the wrench 2 is released, the rotating disk 31 rotates and resets under the action of the torsion spring 32, and drives the wrench 2 to rotate and reset to the initial position, and the second limit portion 2232 abuts and cooperates with the limit block 2 42 again.

[0083] From the above description of the present embodiment, it can be known that no matter the wrench device of the present embodiment is installed on the left side wall or the right side wall of the water tank in a manner that the trigger 21 of the wrench 2 faces the front side wall of the water tank, or is installed on the front side wall of the water tank in a manner that the trigger 21 of the wrench 2 faces the right side wall or the left side wall of the water tank, when the wrench 2 is pressed downward or pushed downward, the wrench 2 can be rotated to drive the starter 5 to move and thus open the drain valve for drainage, while the wrench 2 cannot be rotated when it is pushed upward, so that the wrench device of the present embodiment can be installed on different side walls of the water tank according to actual needs, and has a wider range of applications. At the same time, the direction of the wrench 2 can be installed in a manner that is convenient for user operation and conforms to the user's usage habits, thereby improving the user experience.

[0084] In other embodiments, the setting may also be reversed, the limiting member is slidably arranged on the fixed part and can slide linearly back and forth between the first position and the second position relative to the fixed part under the action of gravity, a limiting groove is provided on the wrench, the first limiting portion is the starting end of the limiting groove, the second limiting portion is the end of the limiting groove, the fixed part is provided with a limiting protrusion movably matched in the limiting groove, the third limiting portion is one side of the limiting protrusion, and the fourth limiting portion is the other side of the limiting protrusion; when the limiting member is in the first position, a part of the limiting member (limiting block 1) enters the limiting groove and can be limitedly matched with the first limiting portion to limit the wrench to only rotate in the forward direction, and the third limiting portion can be limitedly matched with the second limiting portion to limit the amplitude of the forward rotation of the wrench; when the limiting member is in the second position, another part of the limiting member (limiting block 2) enters the limiting groove and can be limitedly matched with the second limiting portion to limit the wrench to only rotate in the reverse direction, and the fourth limiting portion can be limitedly matched with the first limiting portion to limit the amplitude of the reverse rotation of the wrench.

[0085] Embodiment 3 (not shown) (a limiter is provided on the wrench. When the limiter is in the first state, the limiter limits the range of reverse rotation of the wrench relative to the fixed part and enables the wrench to rotate forward relative to the fixed part; when the limiter is in the second state, the limiter limits the range of forward rotation of the wrench relative to the fixed part and enables the wrench to rotate reversely relative to the fixed part)

[0086] This embodiment is basically the same as the first embodiment, and the only difference is that:

[0087] In this embodiment, when the limiting unit is in the first state, the limiting unit limits the amplitude of the reverse rotation of the wrench relative to the fixed part so that the wrench can only drive the starting member of the drain valve to move a shorter stroke through the transmission mechanism to open the drain valve for small-displacement drainage, and the limiting unit gives way to the forward rotation of the wrench relative to the fixed part so that the wrench can rotate forwardly relative to the fixed part to drive the starting member of the drain valve to move a longer stroke to open the drain valve for large-displacement drainage; when the limiting unit is in the second state, the limiting unit limits the amplitude of the forward rotation of the wrench relative to the fixed part so that the wrench can only drive the starting member of the drain valve to move a shorter stroke through the transmission mechanism to open the drain valve for small-displacement drainage, and the limiting unit gives way to the reverse rotation of the wrench relative to the fixed part so that the wrench can rotate reversely relative to the fixed part to drive the starting member of the drain valve to move a longer stroke to open the drain valve for large-displacement drainage.

[0088] In this embodiment, the limiting unit includes a limiting member movably arranged on the wrench, a first limiting portion and a second limiting portion fixedly arranged on the fixed part, the limiting member can move between the first position and the second position relative to the wrench, and the limiting unit also includes a third limiting portion and a fourth limiting portion, and the third limiting portion and the fourth limiting portion are both fixedly arranged on the wrench; when the limiting member is located at the first position, the limiting unit is in a first state, the limiting member can cooperate with the first limiting portion to limit the range of the wrench to rotate in the opposite direction relative to the fixed part to a first angle, and the third limiting portion can cooperate with the second limiting portion to limit the range of the wrench to rotate in the forward direction relative to the fixed part to a second angle; when the limiting member is located at the second position, the limiting unit is in a second state, the limiting member can cooperate with the second limiting portion to limit the range of the wrench to rotate in the forward direction relative to the fixed part to a first angle, and the fourth limiting portion can cooperate with the first limiting portion to limit the range of the wrench to rotate in the reverse direction relative to the fixed part to a second angle. Among them, the first angle is smaller than the second angle. When the wrench rotates the first angle, the travel of the transmission mechanism can be shorter, thereby controlling the drain valve to drain small displacement water. When the wrench rotates the second angle, the travel of the transmission mechanism can be longer, thereby controlling the drain valve to drain large displacement water. Here, by controlling the length of the travel of the transmission mechanism, the drain valve can drain large or small displacement water by using existing known technologies, and no detailed description will be given.

[0089] Similar to the first embodiment, in this embodiment, the limit member is slidably arranged on the wrench and can slide back and forth linearly between the first position and the second position relative to the wrench under the action of gravity, the fixed part is provided with a limit groove, the first limit part is the starting end of the limit groove, the second limit part is the end of the limit groove, the wrench is provided with a limit protrusion movably fitted in the limit groove, the third limit part is one side of the limit protrusion, and the fourth limit part is the other side of the limit protrusion; when the limit member is in the first position, a part of the limit member enters the limit groove; when the limit member is in the second position, the other part of the limit member enters the limit groove.

[0090] In this embodiment, the structures and principles of the remaining parts not described (including the fixing part, the wrench, the transmission mechanism and the box body, etc.) are consistent with those in the first embodiment and will not be described in detail here.

[0091] The use principle of this embodiment is briefly described as follows:

[0092] The fixing part is threadably connected to the second nut on the first box body (that is, the fixing part is connected to the connecting structure on the front side of the box body), the rotating shaft passes through the mounting hole on the first box body and is fixedly connected to the front side of the rotating disk, and the limiting member is slid to the first position, that is, at this time, the limiting unit is in the first state, and the wrench is in the initial position in the initial state (at this time, the limiting protrusion is located in the middle of the limiting groove, and the axial direction of the positioning hole one is parallel to the vertical direction), the first end of the limiting member enters the limiting groove and can abut and cooperate with the first limiting part to limit the range of reverse rotation of the wrench relative to the fixed part to the first angle, and at the same time, the second end of the limiting member retracts into the positioning hole one, and the third limiting part can cooperate with the second limiting part to limit the range of positive rotation of the wrench relative to the fixed part to the second angle; when in use, the user can press down or dial downward The wrench causes it to rotate forwardly relative to the fixed part until the third limit portion abuts and cooperates with the second limit portion. At this time, the wrench rotates forwardly to a second angle relative to the fixed part, and the wrench drives the starting piece of the drain valve to move a longer stroke through the rotating disk to open the drain valve for large-volume drainage. After loosening the wrench, the rotating disk rotates and resets under the action of the torsion spring, and drives the wrench to rotate and reset to its initial position; the user can also turn the wrench upward to cause it to rotate reversely relative to the fixed part until the first end of the limit piece abuts and cooperates with the first limit portion. At this time, the wrench rotates reversely relative to the fixed part by a first angle, and the wrench drives the starting piece of the drain valve to move a shorter stroke through the rotating disk to open the drain valve for small-volume drainage. After loosening the wrench, the rotating disk rotates and resets under the action of the torsion spring, and drives the wrench to rotate and reset to its initial position.

[0093] The fixing part is threadably connected to the second nut on the second box body (that is, the fixing part is connected to the connecting structure on the back of the box body), the rotating shaft passes through the mounting hole on the second box body and is fixedly connected to the back of the rotating disk, and the limiting member is slid to the second position, that is, at this time, the limiting unit is in the second state, and the wrench is in the initial position in the initial state (at this time, the limiting protrusion is located in the middle of the limiting groove, and the axial direction of the positioning hole one is parallel to the vertical direction), the second end of the limiting member enters the limiting groove and can abut and cooperate with the second limiting part to limit the range of positive rotation of the wrench relative to the fixed part to the first angle, and at the same time, the first end of the limiting member is retracted into the positioning hole one, and the fourth limiting part can cooperate with the first limiting part to limit the range of reverse rotation of the wrench relative to the fixed part to the second angle; when in use, the user can press down or dial downward The wrench causes the relative fixed part to rotate in the opposite direction until the fourth limit part abuts and cooperates with the first limit part. At this time, the wrench rotates in the opposite direction by a second angle relative to the fixed part, and the wrench drives the starting piece of the drain valve to move a longer stroke through the rotating disk to open the drain valve for large-volume drainage. After loosening the wrench, the rotating disk rotates and resets under the action of the torsion spring, and drives the wrench to rotate and reset to its initial position; the user can also turn the wrench upward to cause it to rotate forwardly relative to the fixed part until the second end of the limit part abuts and cooperates with the second limit part. At this time, the wrench rotates forwardly by a first angle relative to the fixed part, and the wrench drives the starting piece of the drain valve to move a shorter stroke through the rotating disk to open the drain valve for small-volume drainage. After loosening the wrench, the rotating disk rotates and resets under the action of the torsion spring, and drives the wrench to rotate and reset to its initial position.

[0094] From the above description of the present embodiment, it can be known that no matter the wrench device of the present embodiment is installed on the left side wall or the right side wall of the water tank in a manner that the trigger 21 of the wrench 2 faces the front side wall of the water tank, or is installed on the front side wall of the water tank in a manner that the trigger 21 of the wrench 2 faces the right side wall or the left side wall of the water tank, when the wrench is pressed downward or turned downward, the wrench can be rotated to drive the starter to move a longer stroke and then open the drain valve for large-displacement drainage, and when the wrench is turned upward, the wrench can be rotated to drive the starter to move a shorter stroke and then open the drain valve for small-displacement drainage, so that the wrench device of the present embodiment can be installed on different side walls of the water tank according to actual needs, and has a wider range of applications. At the same time, the direction of the wrench can be installed in a manner that is convenient for user operation and conforms to the user's usage habits, thereby improving the user experience.

[0095] Embodiment 4 (the limiting member is arranged on the fixed part. When the limiting unit is in the first state, the limiting unit limits the range of reverse rotation of the wrench relative to the fixed part and enables the wrench to rotate forward relative to the fixed part; when the limiting unit is in the second state, the limiting unit limits the range of forward rotation of the wrench relative to the fixed part and enables the wrench to rotate reversely relative to the fixed part)

[0096] This embodiment is basically the same as the second embodiment, and the only difference is that:

[0097] In this embodiment, when the limiting unit is in the first state, the limiting unit limits the amplitude of the reverse rotation of the wrench relative to the fixed part so that the wrench can only drive the starting member of the drain valve to move a shorter stroke through the transmission mechanism to open the drain valve for small-displacement drainage, and the limiting unit gives way to the forward rotation of the wrench relative to the fixed part so that the wrench can rotate forwardly relative to the fixed part to drive the starting member of the drain valve to move a longer stroke to open the drain valve for large-displacement drainage; when the limiting unit is in the second state, the limiting unit limits the amplitude of the forward rotation of the wrench relative to the fixed part so that the wrench can only drive the starting member of the drain valve to move a shorter stroke through the transmission mechanism to open the drain valve for small-displacement drainage, and the limiting unit gives way to the reverse rotation of the wrench relative to the fixed part so that the wrench can rotate reversely relative to the fixed part to drive the starting member of the drain valve to move a longer stroke to open the drain valve for large-displacement drainage.

[0098] In this embodiment, the limiting unit includes a limiting member movably arranged on the fixed part, a first limiting portion and a second limiting portion fixedly arranged on the wrench, the limiting member can move between a first position and a second position relative to the fixed part, and the limiting unit also includes a third limiting portion and a fourth limiting portion, both of which are fixedly arranged on the fixed part; when the limiting member is located at the first position, the limiting unit is in a first state, the limiting member can cooperate with the first limiting portion to limit the range of the reverse rotation of the wrench relative to the fixed part to a first angle, and the third limiting portion can cooperate with the second limiting portion to limit the range of the forward rotation of the wrench relative to the fixed part to a second angle; when the limiting member is located at the second position, the limiting unit is in a second state, the limiting member can cooperate with the second limiting portion to limit the range of the forward rotation of the wrench relative to the fixed part to a first angle, and the fourth limiting portion can cooperate with the first limiting portion to limit the range of the reverse rotation of the wrench relative to the fixed part to a second angle. Among them, the first angle is smaller than the second angle. When the wrench rotates the first angle, the travel of the transmission mechanism can be shorter, thereby controlling the drain valve to drain small displacement water. When the wrench rotates the second angle, the travel of the transmission mechanism can be longer, thereby controlling the drain valve to drain large displacement water. Here, by controlling the length of the travel of the transmission mechanism, the drain valve can drain large or small displacement water by using existing known technologies, and no detailed description will be given.

[0099] In this embodiment, the structures and principles of the remaining parts not described are consistent with those of the second embodiment and will not be described again.

[0100] From the above description of the present invention, it can be seen that compared with the prior art, the present invention provides a limit unit between the fixed part and the wrench, and the limit unit can switch between a first state and a second state. When the limit unit is in the first state, the limit unit limits the wrench to only be able to rotate forward relative to the fixed part; when the limit unit is in the second state, the limit unit limits the wrench to only be able to rotate backward relative to the fixed part (or, when the limit unit is in the first state, the limit unit limits the amplitude of the reverse rotation of the wrench relative to the fixed part, and enables the wrench to rotate forward relative to the fixed part; when the limit unit is in the second state, the limit unit limits the amplitude of the forward rotation of the wrench relative to the fixed part, and enables the wrench to rotate backward relative to the fixed part), so that the wrench device of the present invention can be installed on the left side wall or the right side wall of the water tank according to actual needs, and when the wrench device of the present invention is installed on the left side wall or the right side wall of the water tank , the handles of the wrenches can be selected to be set forward, and the execution effect of pulling the wrench downward is consistent, and the execution effect of pulling the wrench upward is also consistent (for example, when the wrench is pulled downward, the drain valve is opened for drainage, and when the wrench is pulled upward, the wrench cannot be turned and the drainage cannot be opened; or, when the wrench is pulled downward, the drain valve is opened for large-displacement drainage, and when the wrench is pulled upward, the drain valve is opened for small-displacement drainage), to meet the user's usage habits; or, the wrench device of the present invention can also be flexibly selected to be installed on the front side wall of the water tank with the handle of the wrench facing left or right according to actual needs, and no matter whether the handle of the wrench is set to the left or right, the execution effect of pulling the wrench downward is consistent, and the execution effect of pulling the wrench upward is also consistent, to meet the user's usage habits, with a wide range of applications and more flexible installation positions, which greatly improves the user experience.

[0101] It should be noted that, in the present invention, no matter how the wrench device is installed, that is, no matter whether the wrench device is installed on the left side wall or the right side wall or the front side wall or the rear side wall of the water tank, or the wrench handle is installed forward or backward or to the left or to the right, the direction of the forward rotation of the wrench relative to the fixed part in each of the above embodiments is consistent, and similarly, the direction of the reverse rotation of the wrench relative to the fixed part is also consistent, that is, the direction of the forward rotation and reverse rotation of the wrench relative to the fixed part of the present invention refers to both the wrench and the fixed part, and has nothing to do with the installation orientation of the wrench device.

[0102] The above embodiments are only used to further illustrate a wrench device for a drain valve of the present invention, but the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A wrench device for a drain valve, characterized in that: The invention comprises a fixed part, a wrench and a transmission mechanism, wherein the wrench is rotatably mounted on the fixed part and can rotate forwardly and reversely relative to the fixed part, the wrench is transmission-connected to the starter of the drain valve through the transmission mechanism, a limiting unit is arranged between the fixed part and the wrench, the limiting unit comprises a limiting member movably arranged on one of the wrench and the fixed part and a first limiting portion and a second limiting portion fixedly arranged on the other of the wrench and the fixed part, the limiting member can move between a first position and a second position relative to the wrench or the fixed part, so that the limiting unit can switch between a first state and a second state; When the limiting unit is in the first state, the limiting unit limits the wrench to only be able to rotate in the forward direction relative to the fixed part; when the limiting unit is in the second state, the limiting unit limits the wrench to only be able to rotate in the reverse direction relative to the fixed part; Alternatively, when the limiting unit is in the first state, the limiting unit limits the range of reverse rotation of the wrench relative to the fixed part, and enables the wrench to rotate forwardly relative to the fixed part; when the limiting unit is in the second state, the limiting unit limits the range of forward rotation of the wrench relative to the fixed part, and enables the wrench to rotate reversely relative to the fixed part.

2. The wrench device for the drain valve according to claim 1, characterized in that: When the limiting member is located at the first position, the limiting unit is in the first state, and the limiting member cooperates with the first limiting portion to limit the wrench to only rotate in the forward direction relative to the fixed portion; when the limiting member is located at the second position, the limiting unit is in the second state, and the limiting member cooperates with the second limiting portion to limit the wrench to only rotate in the reverse direction relative to the fixed portion; Alternatively, when the limit member is located at the first position, the limit unit is in the first state, and the limit member can cooperate with the first limit portion to limit the range of reverse rotation of the wrench relative to the fixed part; when the limit member is located at the second position, the limit unit is in the second state, and the limit member can cooperate with the second limit portion to limit the range of forward rotation of the wrench relative to the fixed part.

3. The wrench device for the drain valve according to claim 2, characterized in that: The limiting unit further includes a third limiting portion and a fourth limiting portion, and the third limiting portion, the fourth limiting portion and the limiting member are all arranged on the same one of the wrench and the fixing portion; When the limiting member is located at the first position, the third limiting portion can cooperate with the second limiting portion to limit the range of positive rotation of the wrench relative to the fixed part; when the limiting member is located at the second position, the fourth limiting portion can cooperate with the first limiting portion to limit the range of reverse rotation of the wrench relative to the fixed part.

4. The wrench device for the drain valve according to claim 3, characterized in that: The limiting member is slidably arranged on the wrench, the fixed part is provided with a limiting groove, the first limiting portion is the starting end of the limiting groove, the second limiting portion is the end of the limiting groove, the wrench is provided with a limiting protrusion movably matched in the limiting groove, the third limiting portion is one side of the limiting protrusion, and the fourth limiting portion is the other side of the limiting protrusion; when the limiting member is located at the first position, a part of the limiting member enters the limiting groove; when the limiting member is located at the second position, another part of the limiting member enters the limiting groove; Alternatively, the limit member is slidably arranged on the wrench, a limit groove is provided on the wrench, the third limit portion is the starting end of the limit groove, the fourth limit portion is the end of the limit groove, the fixed part is provided with a limit protrusion movably fitted in the limit groove, the first limit portion is one side of the limit protrusion, and the second limit portion is the other side of the limit protrusion; when the limit member is in the first position, a part of the limit member enters the limit groove; when the limit member is in the second position, another part of the limit member enters the limit groove.

5. The wrench device for the drain valve according to claim 4, characterized in that: The wrench includes a trigger handle and a rotating shaft connected to the trigger handle, one end of the rotating shaft can be rotatably passed through the fixed part and then be transmission-connected to the transmission mechanism; the limiting member is a limiting pin, and the rotating shaft is provided with a positioning hole one whose two ends can be respectively communicated with the limiting groove, and the limiting pin is slidably arranged in the positioning hole one; when the limiting member is located at the first position, the first end of the limiting pin extends out of the positioning hole one and enters the limiting groove, and at the same time, the second end of the limiting pin retracts into the positioning hole one; when the limiting member is located at the second position, the second end of the limiting pin extends out of the positioning hole one and enters the limiting groove, and at the same time, the first end of the limiting pin retracts into the positioning hole one.

6. The wrench device for the drain valve according to claim 3, characterized in that: The limiting member is slidably arranged on the fixed part, the fixed part is provided with a limiting groove, the third limiting portion is the starting end of the limiting groove, the fourth limiting portion is the end of the limiting groove, the wrench is provided with a limiting protrusion movably matched in the limiting groove, the first limiting portion is one side of the limiting protrusion, and the second limiting portion is the other side of the limiting protrusion; when the limiting member is located at the first position, a part of the limiting member enters the limiting groove; when the limiting member is located at the second position, another part of the limiting member enters the limiting groove; Alternatively, the limiting member is slidably arranged on the fixed part, a limiting groove is provided on the wrench, the first limiting portion is the starting end of the limiting groove, the second limiting portion is the end of the limiting groove, the fixed part is provided with a limiting protrusion movably fitted in the limiting groove, the third limiting portion is one side of the limiting protrusion, and the fourth limiting portion is the other side of the limiting protrusion; when the limiting member is in the first position, a part of the limiting member enters the limiting groove; when the limiting member is in the second position, another part of the limiting member enters the limiting groove.

7. The wrench device for the drain valve according to claim 6, characterized in that: The wrench comprises a trigger handle and a rotating shaft connected to the trigger handle, one end of the rotating shaft can rotatably pass through the fixed part and then be transmission connected to the transmission mechanism; the limiting member comprises a limiting block 1 and a limiting block 2, the fixed part is provided with a positioning groove 1 and a positioning groove 2 which are respectively communicated with the limiting groove, the positioning groove 1 and the positioning groove 2 are located on both sides of the rotating shaft and are arranged opposite to each other, the limiting block 1 and the limiting block 2 are respectively slidably arranged in the positioning groove 1 and the positioning groove 2; when the limiting member is in the first position, the limiting block 1 extends out of the positioning groove 1 and extends into the limiting groove to cooperate with the first limiting part, and the limiting block 2 is retracted into the positioning groove 2; when the limiting member is in the second position, the limiting block 2 extends out of the positioning groove 2 and extends into the limiting groove to cooperate with the second limiting part, and the limiting block 1 is retracted into the positioning groove 1.

8. The wrench device for the drain valve according to claim 7, characterized in that: The fixing part includes a fixing piece, the fixing piece is provided with an axial hole for the rotating shaft to movably pass through, the side wall of the axial hole is provided with a positioning hole 2 and a positioning hole 3 which are relatively arranged, the outer side of the fixing piece is provided with a limiting sleeve, the positioning groove 1 is formed by the side wall of the positioning hole 2 and the limiting sleeve, the positioning groove 2 is formed by the positioning hole 3 and the limiting sleeve, and the limiting sleeve can limit the limiting block 1 from escaping out of the positioning hole 2 and limit the limiting block 2 from escaping out of the positioning hole 3.

9. The wrench device for a drain valve according to any one of claims 3 to 8, characterized in that: When the limiting member is located at the first position, the limiting member can cooperate with the first limiting portion to limit the range of reverse rotation of the wrench relative to the fixed part to a first angle, and the third limiting portion can cooperate with the second limiting portion to limit the range of forward rotation of the wrench relative to the fixed part to a second angle; When the limiting member is located at the second position, the limiting member can cooperate with the second limiting portion to limit the range of the positive rotation of the wrench relative to the fixed part to the first angle, and the fourth limiting portion can cooperate with the first limiting portion to limit the range of the reverse rotation of the wrench relative to the fixed part to the second angle; Wherein, the first angle is smaller than the second angle.

10. The wrench device for a drain valve according to any one of claims 1 to 8, characterized in that: It also includes a box body fixed relative to the fixed part, the transmission mechanism is installed in the box body, and the front and back sides of the box body are provided with connection structures that can be fixedly connected to the fixed part; when the fixed part is connected to the connection structure on the front side of the box body, the limiting unit can switch to the first state; when the fixed part is connected to the connection structure on the back side of the box body, the limiting unit can switch to the second state.

11. The wrench device for a drain valve according to any one of claims 2 to 8, characterized in that: The limiting member can move between the first position and the second position under the action of an external force or its own gravity, and the external force is a force applied to the limiting member by the outside world.

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