Pedal type switch structure for lab hand washing sink

Abstract

The utility model discloses a pedal switch structure for a lab hand sink, and relates to the technical field of lab facilities, the pedal switch structure specifically comprises a pedal part and a rotating part, the pedal part comprises a base, two ends of an inner cavity of the base are interactively connected with rotating rods, the two rotating rods are connected through a pedal plate, and the pedal plate is connected with the rotating part. A lifting rod is movably connected to the middle of the end, close to the rotating rods, of the pedal, a balancing weight is fixedly connected to the bottom of the lifting rod, the end, away from the rotating rods, of the pedal is located outside the base, and a driving gear is fixedly connected to the end, away from the pedal, of one rotating rod. According to the pedal type switch structure for the lab hand washing sink, the pedal plate is driven to reset by utilizing the gravity borne by the balancing weight, so that when the structure is used, the force for resetting the pedal plate can be kept unchanged, a faucet ball valve can be completely closed, and the phenomena of water leakage and water dripping of a faucet of the lab hand washing sink are avoided; and the use reliability of the structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laboratory facilities, and particularly relates to a foot-operated switch structure for a laboratory washbasin. Background Art

[0002] The washbasin belongs to one of the common facilities in the laboratory. The existing washbasin faucets generally have three types: induction type, foot-operated type, and manual type. Since the experimental personnel directly manually turning the faucet will cause pollution; when using the induction faucet, it is necessary to regularly replace and repair the internal power supply system, which increases the use cost, and the water output of the induction faucet is fixed, and the user cannot adjust it according to the needs, so it is inconvenient to use; when using the foot-operated faucet, it will not cause cross-contamination, does not require any power supply, has a low use cost, and can adjust the water output according to the needs, overcoming some of the disadvantages of the manual faucet and the induction faucet. Therefore, the foot-operated faucet is most suitable for use in the laboratory.

[0003] Some solutions regarding foot-operated faucets are disclosed in the prior art. For example, the solutions disclosed in the authorized patent documents with the application numbers CN202122996529.1, CN202120756404.9, or CN202120251779.X, etc. When using the above solutions, the faucet is opened by stepping on the pedal, and the pedal is reset by the resilience of the spring, thereby closing the faucet. However, the spring is prone to fatigue during long-term use, resulting in a change in the resilience of the spring on the pedal, affecting the accuracy of the pedal reset, and further causing the faucet to leak easily due to improper closing, affecting the reliability of the faucet during use. Based on this, this application proposes a foot-operated switch structure for a laboratory washbasin. Summary of the Utility Model

[0004] The utility model provides a foot-operated switch structure for a laboratory washbasin, which solves the problem that the foot-operated faucet uses a spring to reset the pedal, has low reliability, and is prone to water leakage of the faucet due to a change in the spring elasticity as mentioned in the above background art.

[0005] The utility model provides the following technical solution: A foot-operated switch structure for a laboratory washbasin, comprising a stepping part and a rotating part. The stepping part includes a base. At both ends of the inner cavity of the base, there are rotatably connected rotating rods. The two rotating rods are connected by a foot pedal. In the middle of one end of the foot pedal close to the rotating rod, there is a movably connected lifting rod. At the bottom of the lifting rod, there is a fixed counterweight. The end of the foot pedal away from the rotating rod is located outside the base. At one end of a rotating rod away from the foot pedal, there is a fixed driving gear. The outer ring of the base is movably connected with a driven gear. The driving gear meshes with the driven gear. The rotating part includes a connecting rod connected to the valve stem of the faucet ball valve. The driven gear and the connecting rod are connected through a transmission structure.

[0006] Preferably, a buffer pad is fixedly connected to the bottom of the counterweight. On both sides of the inner cavity of the base, there are fixedly connected limiting plates. The counterweight is located between the two limiting plates, and the limiting plates limit the counterweight.

[0007] Preferably, a connecting rod is fixedly connected to the middle of one end of the foot pedal close to the rotating rod. The end of the lifting rod away from the counterweight is movably sleeved with the connecting rod.

[0008] Preferably, the rotating rod and the foot pedal are in a fixed connection state. On the top of the end of the foot pedal away from the rotating rod, there are anti-slip patterns, and another buffer pad is fixedly connected to the bottom of the foot pedal.

[0009] Preferably, the connecting rod includes a telescopic rod and a fixed block fixedly connected to the other end of the telescopic rod. The fixed block is fixedly connected to the valve stem of the faucet ball valve.

[0010] Preferably, an implementation manner of the transmission structure includes a driving sprocket and a driven sprocket. At one end of the driven gear away from the base, there is a fixed driving sprocket. The driven sprocket is fixedly connected to the connecting rod. The driving sprocket and the driven sprocket are connected by a transmission chain.

[0011] Preferably, another implementation manner of the transmission structure includes a gear set. The gear set includes transmission gears. At one end of the driven gear away from the base and on the connecting rod, there are fixed transmission gears. Adjacent two transmission gears are in a meshing state. The transmission gears are connected to the base through support rods.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. For this foot-operated switch structure for a laboratory washbasin, the gravity of the counterweight is utilized to drive the foot pedal to reset, so that when this structure is in use, the force when the foot pedal resets can remain unchanged, thereby enabling the faucet ball valve to be completely closed, avoiding the phenomenon of water leakage and dripping of the faucet of the laboratory washbasin, and improving the reliability when this structure is in use.

[0014] 2. The foot-operated switch structure for the laboratory washbasin has a simple structure, is easy to implement and produce, can achieve the effect of turning off immediately when leaving, avoid the waste of water resources caused by forgetting to turn off the faucet, can effectively reduce cross-contact between people, is more hygienic, and according to the rotation angle of the foot pedal, the drainage volume of the faucet of the laboratory washbasin can be adjusted to improve the adaptability of this structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the transmission of the structure of the present utility model using a transmission chain;

[0016] Figure 2 It is the structure of the present utility model Figure 1 Rear view schematic diagram;

[0017] Figure 3 It is a schematic diagram of the stepping part of the structure of the present utility model;

[0018] Figure 4 It is an exploded schematic diagram of the stepping part of the structure of the present utility model;

[0019] Figure 5 It is a sectional schematic diagram of the stepping part of the structure of the present utility model;

[0020] Figure 6 It is a schematic diagram of the connection between the structure of the present utility model and the faucet ball valve of the laboratory washbasin;

[0021] Figure 7 It is a schematic diagram of the transmission of the structure of the present utility model using a gear set.

[0022] In the figure: 1. Base; 2. Foot pedal; 3. Driving gear; 4. Driving sprocket; 5. Transmission chain; 6. Connecting rod; 7. Driven sprocket; 8. Rotating rod; 9. Limiting plate; 10. Link rod; 11. Lifting rod; 12. Counterweight; 13. Buffer pad; 14. Driven gear; 15. Transmission gear; 16. Support rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] The utility model provides a pedal switch structure for a laboratory washbasin, which includes a stepping part and a rotating part. The stepping part includes a base 1. When this structure is in use, the base 1 is fixed on the ground of the laboratory. At both ends of the inner cavity of the base 1, there are rotatably connected rotating rods 8. The two rotating rods 8 are connected by a pedal 2, and the rotating rods 8 and the pedal 2 are in a fixed connection state. Through the arrangement of the rotating rods 8, the pedal 2 is in a movable connection state with the base 1. In the middle of one end of the pedal 2 close to the rotating rod 8, there is fixedly connected a connecting rod 10. An elevating rod 11 is movably sleeved on the outer circle of the connecting rod 10. The bottom of the elevating rod 11 is fixedly connected with a counterweight 12. The weight of the counterweight 12 can be set according to requirements and is not limited here. One end of the pedal 2 far from the rotating rod 8 is located outside the base 1. Through the arrangement of the counterweight 12 and the elevating rod 11, the pedal 2 can rotate under the action of the stepping force. When one end of the pedal 2 far from the rotating rod 8 moves downward, the other end of the pedal 2 drives the counterweight 12 to move upward through the elevating rod 11. When the restriction on the pedal 2 is released, under the action of gravity, the counterweight 12 moves downward, and the counterweight 12 drives the pedal 2 to rotate in the reverse direction until the bottom of the counterweight 12 contacts the bottom of the inner cavity of the base 1, and the pedal 2 is reset.

[0025] As can be seen from the above description, when this pedal switch structure is in use, the pedal 2 is reset by the gravity received by the counterweight 12.

[0026] At the bottom of the counterweight 12 and at the bottom of one end of the pedal 2 far from the rotating rod 8, there are both fixedly connected with buffer pads 13. Through the arrangement of the buffer pads 13, the resilience of the buffer pad 13 connected to the bottom of the counterweight 12 can reduce the impact force between the counterweight 12 and the base 1 during contact, protect the counterweight 12, extend the service life of the counterweight 12 and reduce the noise during the use of this structure. The resilience of the buffer pad 13 connected to the pedal 2 can reduce the impact force when the pedal 2 contacts the ground, facilitating the user to step on the pedal 2. The material of the buffer pad 13 can be rubber.

[0027] On the top of one end of the pedal 2 far from the rotating rod 8, there are anti-slip lines, which increase the friction between the pedal 2 and the sole of the shoe, facilitating stepping. On both sides of the inner cavity of the base 1, there are fixedly connected limiting plates 9. The counterweight 12 is located between the two limiting plates 9. The limiting plates 9 limit the counterweight 12. Through the arrangement of the limiting plates 9, the limiting plates 9 can limit the moving direction of the counterweight 12, enabling the counterweight 12 to move in the vertical direction. And the friction force between the limiting plates 9 and the counterweight 12 reduces the reset speed of the counterweight 12, thereby reducing the impact force when the counterweight 12 contacts the base 1.

[0028] One end of a rotating rod 8 far from the pedal 2 is fixedly connected with a driving gear 3. The outer circle of the base 1 is movably connected with a driven gear 14. The driving gear 3 is meshed with the driven gear 14.

[0029] The rotating part includes a connecting rod 6 connected to the valve stem of the faucet ball valve, and the connecting rod 6 is connected to the driven gear 14 through a transmission structure. In some embodiments of the present application, an implementation of the transmission structure includes a driving sprocket 4 and a driven sprocket 7, and the driven gear 14 is fixedly connected to the driving sprocket 4 at one end away from the base 1. Through the arrangement of the driven gear 14 and the driving gear 3, the rotation of the rotating rod 8 can drive the driving gear 3 fixedly connected thereto to rotate, and when the driving gear 3 rotates, it can drive the driven gear 14 meshed therewith to rotate, and the driven gear 14 drives the driving sprocket 4 fixedly connected thereto to rotate. The driven sprocket 7 is fixedly connected to the connecting rod 6, and the driven sprocket 7 is connected to the driving sprocket 4 through a transmission chain 5. Through the arrangement of the transmission chain 5, the rotation of the driving sprocket 4 can drive the driven sprocket 7 to rotate, and when the driven sprocket 7 rotates, it can drive the valve stem of the faucet ball valve to rotate through the connecting rod 6 connected thereto, and the faucet ball valve can be opened or closed, so that the foot-operated switch of the faucet can be realized by adopting the structure.

[0030] In some embodiments of the present application, another implementation of the transmission structure includes a gear set, the gear set includes a transmission gear 15, and the transmission gear 15 is fixed to the end of the driven gear 14 away from the base 1 and the connecting rod 6, and the two adjacent transmission gears 15 are in a meshing state. The rotation of the rotating rod 8 can drive the driving gear 3 fixedly connected thereto to rotate. When the driving gear 3 rotates, it can drive the driven gear 14 meshed therewith to rotate. The driven gear 14 drives the transmission gear 15 fixedly connected thereto, and the rotating transmission gear 15 drives the transmission gear 15 meshed therewith to rotate, thereby enabling the connecting rod 6 to rotate. The transmission gear 15 is connected to the base 1 through a support rod 16, the support rod 16 is fixedly connected to the base 1, and the transmission gear 15 is movably connected to the support rod 16.

[0031] The connecting rod 6 includes a telescopic rod and a fixed block fixedly connected to the other end of the telescopic rod, the end of the telescopic rod away from the fixed block is fixedly connected to the transmission gear 15 or the driven sprocket 7, and the fixed block is fixedly connected to the valve stem of the faucet ball valve. Through the setting of the connecting rod 6, the length of the connecting rod 6 can be adjusted according to demand, so as to facilitate the connection of the rotating part with the valve stem of the faucet ball valve. In some embodiments of the present application, the telescopic rod includes a fixed tube fixedly connected to the driven sprocket 7 or the transmission gear 15, an inner rod is movably connected to the inner cavity of the fixed tube, the other end of the inner rod is connected to the fixed block, and the inner rod and the fixed tube are connected by bolts.

[0032] Next, the present application will be further explained by taking the example that the pedal part and the rotating part are connected by the transmission chain 5.

[0033] The installation steps of the foot-operated switch structure for the laboratory washbasin are as follows: Fix the end of the connecting rod 6 away from the driven sprocket 7 to the valve stem of the ball valve of the laboratory washbasin faucet. After fixing the base 1 at a suitable position on the ground under the laboratory washbasin, connect the driving sprocket 4 and the driven sprocket 7 with the transmission chain 5, as shown in the attached Figure 6 description. When the foot-operated switch structure for the laboratory washbasin is in use, when an experimenter steps down on the foot pedal 2, the foot pedal 2 drives the rotating rod 8 fixedly connected thereto to rotate. The rotating rotating rod 8 drives the driving gear 3 fixedly connected thereto to rotate. The driving gear 3 drives the driving sprocket 4 to rotate through the driven gear 14 engaged therewith. The rotating driving sprocket 4 drives the driven sprocket 7 to rotate through the transmission chain 5. The driven sprocket 7 drives the valve stem of the faucet ball valve to rotate through the connecting rod 6 fixedly connected thereto. The valve stem drives the ball valve plate to rotate, and the faucet ball valve is in an open state, so that the laboratory washbasin faucet is in an open state. When the foot pedal 2 rotates, the foot pedal 2 drives the counterweight 12 to move upward through the lifting rod 11. When the restriction on the foot pedal 2 is released, under the action of gravity, the counterweight 12 drives the lifting rod 11 to move downward, and the lifting rod 11 drives the foot pedal 2 to rotate until the bottom of the counterweight 12 contacts the bottom of the inner cavity of the base 1. At this time, the foot pedal 2 is reset. During the reset process of the foot pedal 2, the foot pedal 2 drives the rotating rod 8 to rotate in the reverse direction. The rotating rod 8 drives the driving gear 3 to rotate in the reverse direction. The driving gear 3 drives the driving sprocket 4 to rotate in the reverse direction through the driven gear 14 engaged therewith. The driving sprocket 4 drives the driven sprocket 7 to rotate in the reverse direction through the transmission chain 5. The driven sprocket 7 drives the valve stem to rotate in the reverse direction through the connecting rod 6. After the counterweight 12 is reset, the ball valve of the faucet is completely closed, so that the laboratory washbasin faucet is in a closed state.

[0034] All standard parts used in the present utility model can be purchased from the market. Special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A foot-operated switch structure for a laboratory wash basin, comprising a pedal portion and a rotating portion, characterized in that: The pedal portion comprises a base (1), both ends of the inner cavity of the base (1) are interactively connected with rotating rods (8), the two rotating rods (8) are connected through a foot pedal (2), the middle part of the foot pedal (2) close to the rotating rod (8) is movably connected with a lifting rod (11), the bottom of the lifting rod (11) is fixedly connected with a counterweight (12), the end of the foot pedal (2) away from the rotating rod (8) is located outside the base (1), one end of the rotating rod (8) away from the foot pedal (2) is fixedly connected with a driving gear (3), the outer ring of the base (1) is movably connected with a driven gear (14), the driving gear (3) is meshed with the driven gear (14), and the rotating portion comprises a connecting rod (6) connected to the valve stem of the faucet ball valve, and the driven gear (14) and the connecting rod (6) are connected through a transmission structure.

2. A foot-operated switch structure for a laboratory wash basin according to claim 1, characterized in that: The bottom of the counterweight (12) is fixedly connected to a buffer pad (13), and both sides of the inner cavity of the base (1) are fixedly connected to limit plates (9), the counterweight (12) is located between the two limit plates (9), and the limit plates (9) limit the counterweight (12).

3. A foot-operated switch structure for a laboratory wash basin according to claim 1, characterized in that: A connecting rod (10) is fixedly connected to the middle of one end of the foot pedal (2) close to the rotating rod (8), and one end of the lifting rod (11) away from the counterweight block (12) is movably sleeved with the connecting rod (10).

4. A foot-operated switch structure for a laboratory wash basin according to claim 1, characterized in that: The rotating rod (8) and the foot pedal (2) are in a fixed connection state; the top of the foot pedal (2) away from the rotating rod (8) is provided with anti-slip grooves, and the bottom of the foot pedal (2) is fixedly connected with another buffer pad (13).

5. A foot-operated switch structure for a laboratory wash basin according to claim 1, characterized in that: The connecting rod (6) comprises a telescopic rod and a fixed block fixedly connected to the other end of the telescopic rod, and the fixed block is fixedly connected to the valve stem of the faucet ball valve.

6. A foot-operated switch structure for a laboratory wash basin according to claim 1, characterized in that: An implementation of the transmission structure comprises a driving sprocket (4) and a driven sprocket (7); the driven gear (14) is fixedly connected to the driving sprocket (4) at one end away from the base (1); the driven sprocket (7) is fixedly connected to a connecting rod (6); and the driving sprocket (4) and the driven sprocket (7) are connected in transmission via a transmission chain (5).

7. A foot-operated switch structure for a laboratory wash basin according to claim 1, characterized in that: Another embodiment of the transmission structure comprises a gear set, the gear set comprising a transmission gear (15), the end of the driven gear (14) away from the base (1) and the connecting rod (6) are both fixed with a transmission gear (15), two adjacent transmission gears (15) are in a meshing state, and the transmission gear (15) is connected to the base (1) via a support rod (16).

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