CN206479874U - Foot controller - Google Patents

Abstract

The utility model provides a foot controller, which comprises a base and a button assembly arranged on the base. The base is also provided with a first elastic member for jacking up the button assembly and keeping it at an initial position. A second elastic member for activating the switch structure is arranged under the button assembly, and when the button assembly is pressed, the first elastic member acts before the second elastic member. The utility model designs the pressing structure of the button as a two-step action mode, the first elastic member must be operated before the switch structure can be pressed through the second elastic member; the first elastic member plays the role of starting protection, thereby preventing accidental Operation and avoid accidental pressure to trigger the button, the pedaling feedback is obvious, which improves the safety of the equipment and is easy to operate.

Description

foot controller

technical field

The utility model belongs to the technical field of medical equipment, in particular to a foot controller.

Background technique

The special foot controller for surgical equipment is used in the operating room, which requires a large activation force of the buttons and a high level of protection against liquid ingress. Buttons are the key structure of the foot controller. Control the operation of the surgical equipment or change related parameters by stepping on the buttons. The actuation force control of the buttons is the difficulty in designing the foot controller.

The existing pedal buttons use ordinary switch buttons, which are easy to trigger and start when accidentally touched, have poor safety, and cannot withstand large pedaling forces, are easy to trample on the pedal buttons, and have a short service life.

Utility model content

In view of the above-mentioned deficiencies in the prior art, the purpose of this utility model is to provide a foot controller, which can effectively prevent misoperation, improve safety and prolong service life.

In order to achieve the above purpose and other related purposes, the technical solution of the utility model is as follows:

A foot controller, comprising a base and a button assembly arranged on the base, the base is also provided with a first elastic member for jacking up the button assembly and maintaining it at an initial position, and the bottom of the button assembly is A second elastic member is provided for activating the switch structure, and when the button assembly is pressed, the first elastic member acts before the second elastic member.

With the above-mentioned structure, the pressing structure of the button is designed as a two-step action mode. The first elastic member has an initial preload. When operating the button assembly, the preload of the first elastic member must be overcome first. After the first elastic member moves , the second elastic member can act. The first elastic member plays the role of start-up protection, thereby preventing misoperation and avoiding the situation of triggering the button by accidental pressure. The stepping feedback is obvious, the safety of the device is improved, and the operation is convenient.

Further, the working stroke of the first elastic member is greater than the working stroke of the second elastic member and/or the elastic force of the first elastic member is greater than the elastic force of the second elastic member.

The first elastic member ensures that the button assembly requires a large starting force or needs to be compressed for a certain stroke before the second elastic member can work. When the button is stepped on, it can only be activated when the pedaling force exceeds the preload of the first elastic member or a certain stroke. The second elastic member drives the pressing head to press the switch structure; thereby preventing misoperation and avoiding accidental pressure triggering the button, the pedaling feedback is obvious, and the safety of the equipment is improved. In addition, the operating force of the pressing switch can be designed to be small for easy operation. .

Further, a limiting mechanism is provided between the button assembly and the base to limit the vertical movement range of the button assembly.

Further, the first elastic member and the second elastic member are springs or shrapnel, and when the button assembly is not pressed, the first elastic member is in a compressed state.

Further, the limit mechanism includes a limit block arranged on the base and a stopper arranged on the button assembly, the stopper can move up and down relative to the limit block, and the limit block is The stopper forms a limit for the range of up and down movement.

Further, the button assembly includes a button cap and a support body arranged under the button cap, the periphery of the support body is covered with a button seat, and the bottom of the button seat extends outward to form a limit step, which constitutes the stop. The lower limit portion of the stopper, the outer edge of the button cap or the outer edge of the support body forms the upper limit portion of the stopper.

Further, the foot controller also includes a pressing head for pressing the switch structure, the pressing head is arranged under the button assembly, the second elastic member is arranged in the button seat, and the second elastic member The upper and lower ends of the upper and lower ends respectively abut between the support body and the pressing head.

Further, the base is provided with an installation groove for accommodating the button assembly, the first elastic member is set inside the button seat and outside the second elastic member, and the first elastic member The upper and lower ends respectively abut between the button seat and the bottom of the installation groove or respectively abut between the support body and the bottom of the installation groove.

Further, the base is provided with a mounting groove for accommodating the button assembly, the first elastic member is outside the button seat, and the upper end of the first elastic member is against the button cap or the button cap. On the lower end surface of the outer edge of the support body, the lower end of the first elastic member abuts against the limiting block or the base beside the installation groove.

Further, an installation chamber is provided in the base below the button assembly, and an electronic device and a switch structure are arranged in the installation chamber, and a film structure is hermetically installed above the installation chamber to separate the installation chamber from the button assembly. The second elastic member is located above the film structure, and the switch structure is located below the film structure and corresponds to the second elastic member.

The button structure is separated from the area of the electronic device by the thin film structure, which prevents liquid from entering the area where the electronic device is located, effectively protects the electronic device, and improves the sealing performance of the device; the thin film sealing form reduces the requirements for the installation mating surface and reduces the manufacturing cost. The switch operation is realized through the cooperation of the membrane switch or the elastic membrane with the switch structure, and the structure is simple.

Further, an installation chamber is provided in the base below the button assembly, and electronic devices are arranged in the installation chamber, and the switch structure is a membrane switch sealed and installed above the installation chamber, and the membrane switch is electrically connected to the electronic device The installation chamber is separated from the button assembly, and the second elastic member is located above the membrane switch.

As mentioned above, the beneficial effect of the utility model is: the pressing structure of the button is designed as a two-step action mode, and the first elastic member must be operated before the switch structure can be pressed through the second elastic member; The function of start-up protection prevents misoperation and avoids the situation of accidental pressure triggering the button. The pedaling feedback is obvious, which improves the safety of the equipment and is easy to operate.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment 1;

Fig. 2 is a schematic structural view of Embodiment 2 of the present utility model.

Part number description

1 base

11 Mounting slot

12 Mounting chamber

13 connection hole

14 grooves

15 button mount

16 Operating hole

21 button caps

22 button holder

23 limit steps

24 supports

25 Boss

26 ring groove

3 limit block

4 first elastic member

5 Second elastic member

6 pressing head

7 membrane switch

71 elastic film

72 Tact switch

8 sealant

9 circuit boards

detailed description

The implementation of the present utility model is illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

Example 1

As shown in Figure 1, the foot controller includes a base 1 and a button assembly arranged on the base 1, and the base 1 is also provided with a first elastic member 4 with preload, the first elastic member 4 has An upward elastic force can lift the button assembly and keep it at the initial position, and a second elastic member 5 for starting the switch structure is also arranged under the button assembly, wherein the operation sequence of the first elastic member 4 is before the second elastic member 5 The second elastic member 5 must be overcome first after the compression stroke or elastic force of the first elastic member 4, thereby starting the switch structure, and the operation of the second elastic member 5 and the switch structure is protected by the first elastic member 4, thereby preventing To avoid misoperation and avoid accidental pressure triggering the switch structure, the pedaling feedback is obvious, the safety of the equipment is improved, and the operation is convenient.

Specifically, when the lower ends of the first elastic member 4 and the second elastic member 5 are at the same height, the compression working stroke of the first elastic member 4 is greater than the working stroke of the second elastic member 5, that is, when the button assembly is pressed, the first elastic member is compressed. Only after a stroke of the first elastic member 4 can the second elastic member 5 be compressed to trigger the switch structure. In this case, the corresponding elastic force of the first elastic member 4 can be smaller than, equal to or greater than that of the second elastic member 5 . In this example, preferably, the elastic force of the first elastic member 4 is greater than the elastic force of the second elastic member 5, that is, the second elastic member 5 can only be deformed after overcoming a large preload of the first elastic member 4, thereby The trigger switch structure is protected by a large preload, and the pedaling feedback is obvious. Of course, both the elastic force and working stroke of the first elastic member 4 may be greater than that of the second elastic member 5 .

On the one hand, the second elastic member 5 plays the function of transmitting the pressing force of the button assembly; . With the above-mentioned structure, it is necessary to overcome the pre-pressure of the first elastic member 4 or to compress a section of the working stroke of the first elastic member 4 before the operation of the push switch structure can be performed. Unexpected pressure triggers the action of the button, and after being set in this way, the elastic force of the second elastic member 5 can be designed to be relatively small, so as to facilitate the activation of the switch structure.

Specifically, the first elastic member 4 may be a compression spring, which is in a compressed state when not pressed. The second elastic member 5 is a spring, which is in a state of natural elongation or compression in normal state, but its compressive elastic force is not enough to operate the switch structure, and the elastic force of the second elastic member 5 is smaller than that of the first elastic member 4, so that the button assembly The required actuation force is large, while the actuation force required by the switch structure is small, which is convenient for switching operation. The first elastic member 4 and the second elastic member 5 may also be elastic pieces or the like.

Further, a limit mechanism is provided between the button assembly and the base 1 to limit the range of the button assembly’s up and down movement, wherein the limit mechanism prevents the button assembly from detaching from the base 1 under the action of pre-pressure on the one hand, and prevents the button from The switch structure is damaged due to excessive pressing of the component. The limit mechanism includes a limit block 3 arranged on the base 1 and a stopper arranged on the button assembly. The stopper can move up and down relative to the limit block 3, and the limit The block 3 forms a limit for the up and down movement range of the stopper.

Specifically, the button assembly includes a button cap 21 and a support body 24 arranged below the button cap 21. The outer periphery of the support body 24 is covered with a button seat 22. The button cap 21, the support body 24 and the button seat 22 move up and down synchronously. In this example The button cap 21 and the support body 24 are integrally structured, the button cap 21 covers the button seat 22 and the limit block 3, the limit block 3 is in the shape of a bush, the button seat 22 is in the shape of a sleeve, and the bottom of the button seat 22 extends outwards to form The limit step 23, the limit step 23 constitutes the lower limit portion of the stopper, the outer edge of the button cap 21 or the outer edge of the support body 24 forms the upper limit portion of the stopper, and the limiter 3 is positioned at the stopper. Between the upper limit part and the lower limit part. When the button assembly is pressed down, the upper limit portion of the stopper is blocked by the upper end of the limit block 3, and when the button assembly returns, the lower limit portion of the stopper is blocked by the lower end of the limit block 3, thereby limiting the movement of the button assembly up and down scope. In order to further improve the waterproof performance, a groove 14 is formed on the upper surface of the base 1 , and the brim of the button cap 21 is located in the groove 14 .

Further, in order to facilitate the operation of the switch structure, it also includes a pressing head 6 for pressing the switch structure. The pressing head 6 is arranged below the button assembly. The button assembly is an actuator that moves the pressing head 6 downward. It is arranged in the button seat, and its upper end abuts against the supporting body 24 , and its lower end abuts against the pressing head 6 .

Further, the base 1 is provided with an installation groove 11 for accommodating the button assembly, the button assembly is arranged above the installation groove 11, the second elastic member 5 and the pressing head 6 extend into the lower part of the installation groove 11, and are close to the switch structure; the limit block 3 is fixed on the inner wall of the upper part of the installation groove 11. The first elastic member 4 is arranged in the button seat and sleeved on the periphery of the second elastic structure 5 . In one embodiment, the upper end of the first elastic member 4 abuts against the support body 24 , and the lower end abuts against the bottom of the installation groove 11 . In this example, the upper end of the first elastic member 4 abuts against the button seat, and the lower end abuts against the bottom of the installation groove 11 .

Specifically, the upper end of the first elastic member 4 abuts against the step formed by the inner wall of the button seat 22, and the lower end abuts against the bottom of the mounting groove 11. Press the upper part of the head 6 to realize the positioning of the second elastic member 5 in the lateral direction, so as to prevent its shaking from affecting the operation. In other embodiments, the upper end of the second elastic member 5 can also abut against the button seat 22 , and the second elastic member 5 can be fixedly connected with the button seat 22 and the pressing head 6 .

On the basis of the above structure, in order to further improve the sealing performance of the pedal button structure, the utility model installs the electronic device and the button assembly in partitions. Specifically, the base 1 is provided with an installation chamber 12 for accommodating the electronic device. The device usually includes a circuit board 9 and a battery. The installation chamber 12 is located below the installation groove 11. The upper end of the installation chamber 12 is provided with a connection hole 13 to communicate with the installation groove 11. A membrane switch 7 is arranged at the bottom of the installation groove 11. The membrane switch 7 is sealed and connected to the bottom of the installation groove 11, and the connection hole 13 is sealed to separate the installation chamber 12 from the installation groove 11. The membrane switch 7 is connected to the circuit board 9 through wires, and the button assembly and the pressing head 6 are located on the membrane switch 7. Directly above.

Wherein, the membrane switch 7 is attached to the base 1, and the side of the membrane switch 7 facing the connection hole 13 is connected with a wire, and the wire penetrates into the inside from the connection hole 13 to connect to the circuit board 9, and the membrane switch 7 is coated with the base 1. The sealant 8 is waterproof. The first elastic member 4 is between the button seat 22 and the base 1 , its length is limited by the stop block 3 , and it is in a compressed state. The second elastic member 5 is fixed on the button cap 21 , and the lower part is connected with the pressing head 6 . Stepping on the button cap 21 exceeds the preload of the first elastic member 4 , and the button cap 21 and the second elastic member 5 move downward together, driving the pressing head 6 to press the membrane switch 7 to trigger the switch. Unclamp the button cap 21, and all parts return to the initial state.

The actuating force of the membrane switch 7 is small, and a spring with a small elastic force is used for actuation; the actuating force of a button is relatively large, and a spring with a large elastic force is used for actuation; the utility model has a simple and compact structure, which ensures a large actuating force and solves the waterproof problem at the same time ; Prevent accidental pressure to trigger the button structure, improve equipment safety, obvious pedaling feedback, no need for special-shaped sealing sleeves, and reduce manufacturing costs.

In this example, the membrane switch 7 integrates the switch and the waterproof structure. In other embodiments, the membrane switch 7 can be replaced by a combination of a membrane and a light touch switch, such as a PVC membrane. The membrane is still sealed and installed at the bottom of the installation groove 11. The two areas are separated, and the tact switch is located directly under the film, installed in the installation chamber 12, and connected with the circuit board 9. Through the sealing form of the film, the requirements for the installation mating surface are reduced, and the manufacturing cost is reduced. The switch operation is realized through the cooperation of the membrane switch 7 or the membrane and the switch structure, and the structure is simple.

Example 2

The difference between this embodiment and Embodiment 1 is that a button mounting seat 15 is added on the base 1 for installing the button assembly, and the elastic film 71 and the tact switch 72 are used for cooperation.

Specifically as shown in Figure 2, the base 1 is provided with a button mounting seat 15, the limit block 3 is connected with the button mounting seat 15 through threads, the upper end of the first elastic member 4 is pushed against the button assembly, and the lower end is against the button mounting seat 15 or the limit block 3, the installation groove 11 is below the button mounting seat 15, and the second elastic member 5 and the pressing head 6 extend into the installation groove 11 to be close to the switch structure.

Wherein, the button assembly includes a button cap 21, a support body 24 installed in the button cap 21, and a button seat 22 installed at the bottom of the support body 24. The first elastic member 4 is outside the button seat, the upper end of the first elastic member is against the lower end surface of the outer edge of the button cap or support body, and the lower end of the first elastic member is against the limit block 3 or installed On the base 1 next to the groove 11. Specifically, the lower end of the button seat 22 is provided with a circle of limit steps 23, the upper end of the support body 24 is provided with a circle of bosses 25, and a ring groove 26 is opened on the bosses 25 for installing the first elastic member 4, and the lower end of the first elastic member 4 presses On the outer edge of the limit block 3, when the button assembly goes down, the boss 25 abuts against the upper end of the limit block 3 to realize the limit; The upper end of the second elastic member 5 is connected to the lower end of the support body 24 , and the lower end of the second elastic member 5 is connected to the pressing head 6 . In this example, the height of the lower end of the first elastic member 4 is higher than that of the second elastic member 5. In this case, the elastic force of the first elastic member 4 can be greater than that of the second elastic member 5, and the corresponding working stroke of the first elastic member 4 can be Less than, equal to or greater than the second elastic member 5; of course, it can also be set that the working stroke of the first elastic member 4 is greater than the second elastic member 5, and the elastic force of the corresponding first elastic member 4 is greater than, equal to or smaller than the second elastic member 5 . Its action principle is similar to that of Embodiment 1, and will not be repeated here.

Similarly, in this example, in order to improve the waterproof performance, the electronic device and the button assembly are installed in partitions. Specifically, the base 1 is provided with an installation chamber 12 for accommodating the electronic device, and the installation chamber 12 is located below the installation groove 11. An operation hole 16 is opened between the top of the installation chamber 12 and the installation groove 11 and communicates. The operation hole 16 is sealed by the elastic film 71 structure installed at the bottom of the installation groove 11, and the installation chamber 12 is separated from the button assembly. The periphery of the elastic film 71 The gap between the bottom of the installation groove 11 is sealed and waterproof with sealant, wherein the switch structure and electronic devices are installed in the installation chamber 12. The switch structure is preferably a tact switch 72, which is located directly below the elastic film 71, and the pressing head 6 is located above the elastic film 71 and corresponds to the tact switch 72 .

In this structure, the button cap 21 is glued to the support body 24, the fixing part is glued to the base 1, the button seat 22 and the limit block 3 can slide relative to each other, and the button cap 21 is stepped on, and the first elastic member 4 is compressed. Drive the pressing head 6 that is connected to the lower end of the support body 24 by the second elastic member 5 to move down, and promote 72 light touch switches isolated by the elastic film 71 to work and make a sound. The elastic film 71 is made of plastic or rubber.

The pedal button structure not only has a high waterproof level, but also has a corresponding sound prompt when the pedaling control is in place. Adopt PVC film sealing glue to isolate on waterproof level, adopt tact switch 72 on sound prompting, there will be sound prompting when stepping on the control in place. It realizes waterproof and at the same time has a voice prompt that the stepping control is in place, and at the same time, the cost of raw materials used is relatively low, which effectively reduces the processing cost.

Anyone familiar with this technology can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the utility model should still be covered by the claims of the utility model.

Claims (11)

1. Foot controller, comprising a base and a button assembly arranged on the base, characterized in that: the base is also provided with a first elastic member for jacking up the button assembly and maintaining it at the initial position, so A second elastic member for activating the switch structure is arranged under the button assembly, and when the button assembly is pressed, the first elastic member acts before the second elastic member. 2. The foot controller according to claim 1, characterized in that: the working stroke of the first elastic member is greater than the working stroke of the second elastic member and/or the elastic force of the first elastic member is greater than that of the first elastic member The elastic force of the second elastic member. 3. The foot controller according to claim 1, characterized in that: a limiting mechanism is provided between the button assembly and the base to limit the range of the button assembly moving up and down. 4. The foot controller according to claim 1, wherein the first elastic member and the second elastic member are springs or shrapnel, and when the button assembly is not pressed, the first elastic member is in compression state. 5. The foot controller according to claim 3, wherein the limiting mechanism comprises a limiting block arranged on the base and a stopper arranged on the button assembly, and the stopper is opposite to The limit block can move up and down, and the limit block forms a limit for the vertical movement range of the stopper. 6. The foot controller according to claim 5, characterized in that: the button assembly includes a button cap and a support body arranged below the button cap, the periphery of the support body is covered with a button seat, and the button seat The bottom extends outward to form a limit step, which constitutes the lower limit portion of the stopper, and the outer edge of the button cap or the outer edge of the support body forms the upper limit portion of the stopper. 7. The foot controller according to claim 6, characterized in that: the foot controller further comprises a pressing head for pressing the switch structure, the pressing head is arranged under the button assembly, and the second elastic The member is arranged inside the button seat, and the upper and lower ends of the second elastic member respectively abut between the support body and the pressing head. 8. The foot controller according to claim 6, wherein a mounting groove for accommodating the button assembly is opened on the base, the first elastic member is set in the button seat and The upper and lower ends of the first elastic member are respectively abutted between the button seat and the bottom of the installation groove or between the support body and the bottom of the installation groove. 9. The foot controller according to claim 6, wherein a mounting groove for accommodating the button assembly is opened on the base, and the first elastic member is outside the button seat, so that The upper end of the first elastic member abuts against the lower end surface of the button cap or the outer edge of the support body, and the lower end of the first elastic member abuts against the limiting block or the base next to the installation groove. 10. The foot controller according to any one of claims 1 to 9, characterized in that: an installation chamber is arranged in the base below the button assembly, and electronic devices and switch structures are arranged in the installation chamber, and the installation chamber A film structure is sealed above the chamber to separate the installation chamber from the button assembly, the second elastic member is located above the film structure, and the switch structure is located below the film structure and corresponds to the second elastic member. 11. The foot controller according to any one of claims 1 to 9, characterized in that: an installation chamber is arranged in the base below the button assembly, and electronic devices are arranged in the installation chamber, and the switch structure For the membrane switch sealedly installed above the installation chamber, the membrane switch is electrically connected with the electronic device and separates the installation chamber from the button assembly, and the second elastic member is located above the membrane switch.