A footswitch structure

Abstract

The utility model provides a foot switch structure, including mounting seat, be equipped with the containing cavity in mounting seat to the shaft sleeve that covers in mounting seat top end face, the containing cavity is equipped with a plurality of electric contact plate of seesaw structure parallelly, and the deflection seat of rotation installation, the bottom vertical embedding of deflection seat is equipped with the elastic pressure rod, and the elastic step lever assembly of forcing deflection seat deflection is installed in the shaft sleeve, the elastic pressure rod includes the metal blind pipe of one end opening, and the first spring of inserting in the metal blind pipe, the closed end of metal blind pipe is in contact with electric contact plate, and the four edges of shaft sleeve all extend the clamping claw that is fixedly combined with the outer wall of mounting seat downward. Blind pipe will not deform because of high temperature in the process of switch welding, also will not wear and tear, make the distance between elastic pressure rod and electric contact plate will not expand, and the four edges of shaft sleeve all extend the clamping claw that is fixedly combined with the outer wall of mounting seat downward, make the clearance between shaft sleeve and mounting seat also will not increase, can effectively solve the problem of bad contact after comprehensive.

Description

Technical Field

[0001] This utility model relates to the field of foot switch technology, specifically to a foot switch structure for switching signals on and off on an electronic musical instrument. Background Technology

[0002] Most guitar effects pedals have one or more foot switches, allowing guitarists to turn effects on or off with their feet while playing, without having to stop and adjust the equipment by hand. The basic structure of these foot switches is generally similar, typically including a mounting base, a bushing fixed to the top of the mounting base, a spring-loaded pedal assembly within the bushing, a rotating deflector within the mounting base, a spring-loaded pressure bar embedded at the bottom of the deflector, a rocker-shaped contact plate located below the deflector, and pins that make contact with the contact plate and extend out of the mounting base. During operation, pressing down on the spring-loaded pedal assembly forces the deflector to switch its yaw direction, and the spring-loaded pressure bar at the bottom of the deflector causes the contact plate to switch direction, thus connecting or contacting different pins to switch effects. However, these foot switches have long suffered from an unresolved problem: after a period of use following manufacturing, poor contact often occurs, affecting the operation of the effects pedal. Utility Model Content

[0003] The purpose of this invention is to provide a foot switch structure to solve the problem of poor contact.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A foot switch structure includes a mounting base with a square cross-section, having several sets of parallel pins extending from its bottom. The mounting base recesses from its top surface to form a concentric receiving cavity, and a bushing covers the top surface of the mounting base. Several electrical contacts corresponding to each set of pins are arranged in parallel within the receiving cavity, and the electrical contacts have a seesaw structure to achieve on / off contact with the pins. A deflector is also rotatably mounted within the receiving cavity. An elastic pressure rod is vertically embedded at the bottom of the deflector corresponding to the rotation fulcrum position of each electrical contact. An elastic pedal assembly that forces the deflector to rotate and deflect is also installed within the bushing. The elastic pressure rod includes a metal blind tube with one open end and a first spring inserted into the metal blind tube at one end. The closed end of the metal blind tube contacts the electrical contact. Claws extend downward from all four sides of the bushing and are fixedly engaged with the outer wall of the mounting base.

[0006] In a preferred embodiment, the closed end of the metal blind tube is a convex dome arc surface.

[0007] In a preferred embodiment, the claw includes a covering portion extending downward from the edge of the bushing and fitting against the top of the outer wall of the mounting base, one or two insertion portions extending downward from the bottom edge of the covering portion, and two parallel limiting claws extending downward from the bottom edge of the insertion portion; the outer periphery of the mounting base has a circumferentially arranged and outwardly protruding limiting portion, the top edge of the limiting portion abutting against the bottom edge of the covering portion, and a slot corresponding to the insertion portion and with a width adapted thereon on the limiting portion, while the two fixing claws extend out from the bottom end of the slot and bend to both sides respectively for limiting.

[0008] In a preferred embodiment, the bushing includes a top plate adapted to the outer contour of the top surface of the mounting base, and a hollow sleeve vertically fixed to the center of the top plate. The elastic step rod assembly includes a second spring vertically disposed within the hollow sleeve, a T-shaped rod coaxially disposed within the second spring, and a pressure handle with one end extending out of the hollow sleeve and the bottom end contacting the T-shaped rod.

[0009] In a preferred embodiment, the top of the deflector has an upwardly protruding slide portion, the slide portion including a vertex corresponding to the rotation axis of the deflector and a groove extending symmetrically downward from the vertex to both sides of the rotation axis; the bottom end of the second spring is sleeved on the slide portion and limited, while the bottom end of the T-head rod abuts against the groove and switches within the grooves on both sides under the action of external downward pressure and the upward restoring force of the second spring.

[0010] In a preferred embodiment, each group of pins includes three pins: a first pin corresponding to the rotation fulcrum of the electric contact plate and always electrically connected to the electric contact plate, and two second pins corresponding to both ends of the electric contact plate for making on / off contact with the electric contact plate.

[0011] In a preferred embodiment, a partition for left and right limiting of each of the electrical contacts is formed within the accommodating cavity.

[0012] The beneficial effects of this utility model are as follows: the elastic pressure rod adopts a metal blind tube, which, compared with the plastic rod used in the prior art, will not deform due to high temperature during the switch welding process, nor will it wear during use. Therefore, it can ensure that the gap between the elastic pressure rod and the electric contact plate does not exceed the error range. Furthermore, the bushing extends downwards on all four sides to form claws that are fixedly engaged with the outer wall of the mounting base. Compared with the structure of the prior art which only has claws on both sides, this ensures that the gap between the bushing and the mounting base will not exceed the range after a certain period of use. The combination of these two aspects can effectively solve the problem of poor contact in existing foot switches. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 This is a schematic diagram of the overall structure of the switch in the embodiment;

[0015] Figure 2 This is a cross-sectional view of the switch in the embodiment.

[0016] Figure 3 This is an exploded view of the switch components in the embodiment;

[0017] Figure 4 This is a schematic diagram of the mounting base in the embodiment;

[0018] Figure 5 This is a schematic diagram of the deflection seat in the embodiment. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. In the description of this application, it should be understood that the orientations or positional relationships indicated in the terminology are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Furthermore, unless otherwise expressly specified and limited, terms such as "installation," "connection," "linking," and "fixing" should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] refer to Figures 1 to 5 A foot switch structure includes a mounting base 1 with a square cross-section, comprising several sets of parallel pins 11 extending from its bottom. The mounting base 1 recesses from its top surface to form a concentric receiving cavity 12, and a bushing 2 covers the top surface of the mounting base 1. Several electrical contacts 3, corresponding to each set of pins 11, are arranged in parallel within the receiving cavity 12. The electrical contacts 3 have a rocker structure to achieve on / off contact with the pins 11. A deflector 4 is also rotatably mounted within the receiving cavity 12. The bottom of the base 4 is vertically embedded with an elastic pressure rod 5 corresponding to the rotation fulcrum position of each of the electric contact plates 3, and the bushing 2 is also equipped with an elastic pedal assembly 6 that forces the deflection base 4 to rotate and swing. The elastic pressure rod 5 includes a metal blind tube 51 with one end open and a first spring 52 with one end inserted into the metal blind tube 51. The closed end 511 of the metal blind tube 51 contacts the electric contact plate 3. The four sides of the bushing 2 extend downward to form claws 21 that are fixedly engaged with the outer wall of the mounting base 1.

[0022] Each group of pins 11 includes three pins: a first pin 11a corresponding to the rotation fulcrum of the electric contact plate 3 and always electrically connected to the electric contact plate 3; and two second pins 11b corresponding to the two ends of the electric contact plate 3 for making on / off contact with the electric contact plate 3.

[0023] The bushing 2 includes a top plate 22 adapted to the outer contour of the top surface of the mounting base 1, and a hollow sleeve 23 vertically fixed to the center of the top plate 22; the elastic step rod assembly 6 includes a second spring 61 vertically disposed in the hollow sleeve 23, a T-head rod 62 coaxially disposed in the second spring 61, and a pressure handle 63 with one end extending out of the hollow sleeve 23 and the bottom end contacting the T-head rod 62.

[0024] The top of the deflector 4 has an upwardly protruding slide section 42. The slide section 42 includes a top end 42a corresponding to the rotation axis 41 of the deflector 4, and slide grooves 42b extending symmetrically downward from the top end 42a to both sides of the rotation axis 41. The bottom end of the second spring 61 is sleeved on the slide section 42 and is limited, while the bottom end of the T-head rod 62 abuts against the slide grooves 42b and switches within the slide grooves 42b on both sides under the action of external downward pressure and the upward restoring force of the second spring 61.

[0025] After analysis, the inventors of this case discovered that in the existing foot switch structure, the elastic rod 5 is a plastic component, and the bushing 2 and the mounting base 1 are only connected and fixed by two opposite sides through the claws 21. This structure generally does not have any problems during factory testing, but during the foot switch welding process, the elastic rod 5 is slightly deformed due to the high temperature of the solder, and it will also experience some wear during use. In addition, the bushing 2 and the mounting base 1 will become loose after being subjected to large foot pressure multiple times. The combination of these factors will cause the foot switch to gradually lose contact and fail. Therefore, the elastic pressure rod 5 adopts a metal blind tube 51, which, compared to the plastic rod used in the prior art, will not deform due to high temperature during the switch welding process and will not wear during use. Thus, it can be ensured that the gap between the elastic pressure rod 5 and the electric contact plate 3 will not exceed the error range. Furthermore, the bushing 2 extends downward on all four sides to form claws 21 that are fixedly engaged with the outer wall of the mounting base 1. Compared to the structure of the prior art which only has claws 21 on both sides, this ensures that the gap between the bushing 2 and the mounting base 1 will not exceed the range after a certain period of use. Combining these two aspects, the problem of poor contact in existing foot switches can be effectively solved.

[0026] In a preferred embodiment, the closed end 511 of the metal blind tube 51 is a convex dome arc surface. The blind tube 51 contacts the electrical contact plate 3 through the dome arc surface, which can reduce the friction between the two, making the switching process smoother and less prone to wear.

[0027] In a preferred embodiment, the claw 21 includes a covering portion 211 extending downward from the edge of the bushing 2 and fitting against the top of the outer wall of the mounting base 1, one or two insertion portions 212 extending downward from the bottom edge of the covering portion 211, and two parallel limiting claws 213 extending downward from the bottom edge of the insertion portion 212; the outer periphery of the mounting base 1 has a circumferentially arranged and outwardly protruding limiting portion 13, the top edge of the limiting portion 13 abutting against the bottom edge of the covering portion 211, and a slot 131 corresponding to the insertion portion 212 and with a width adapted thereon is provided on the limiting portion 13, while the two fixing claws extend out from the bottom end of the slot 131 and bend to both sides respectively for limiting. The covering portion 211 not only prevents the bushing 2 from easily rotating relative to the mounting base 1, but also prevents the bushing 2 from wobbling or tilting relative to the mounting base 1 by fitting the bottom edge of the covering portion 211 against the limiting portion 13. The insertion portion 212 is inserted into the slot 131 with a suitable width, which can further prevent the bushing 2 from wobbling or tilting relative to the mounting shaft. The limiting claws 213 around the bushing are used to limit the bushing 2 from loosening upward relative to the mounting base 1. In summary, it can effectively prevent the bushing 2 from loosening between the mounting base 1 and the mounting base 2.

[0028] In a preferred embodiment, the cavity 12 of this embodiment is formed with a partition 14 for limiting the left and right positions of each of the electrical contacts 3. The partition 14 not only prevents poor contact caused by the left and right wobbling of the electrical contacts 3, but also isolates two adjacent electrical contacts 3 to avoid accidental contact and short circuit.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A foot switch structure, comprising a mounting base with a square cross-section and a plurality of parallel pins extending from its bottom, the mounting base recessing from its top surface to form a concentric receiving cavity, and a bushing covering the top surface of the mounting base; a plurality of electrical contacts corresponding to each group of pins are arranged in parallel within the receiving cavity, the electrical contacts having a seesaw structure to achieve on / off contact with the pins; a deflection seat is also rotatably mounted within the receiving cavity, an elastic pressure rod is vertically embedded at the bottom of the deflection seat corresponding to the rotation fulcrum position of each electrical contact, and an elastic pedal assembly forcing the deflection seat to rotate and deflect is also installed within the bushing; characterized in that: The elastic pressure rod includes a metal blind tube with one end open and a first spring with one end inserted into the metal blind tube. The closed end of the metal blind tube contacts the electric contact plate. The four sides of the bushing extend downward to form claws that are fixedly engaged with the outer wall of the mounting base.

2. The foot switch structure according to claim 1, characterized in that: The closed end of the metal blind tube is a convex dome arc surface.

3. The foot switch structure according to claim 1, characterized in that: The claw includes a covering portion extending downward from the edge of the bushing and fitting against the top of the outer wall of the mounting base, one or two insertion portions extending downward from the bottom edge of the covering portion, and two parallel limiting claws extending downward from the bottom edge of the insertion portion; the outer periphery of the mounting base has a circumferentially arranged and outwardly protruding limiting portion, the top edge of the limiting portion abutting against the bottom edge of the covering portion, and a slot corresponding to the insertion portion and with a suitable width is provided on the limiting portion, while the two fixing claws extend out from the bottom end of the slot and bend to both sides respectively for limiting.

4. The foot switch structure according to claim 1, characterized in that: The bushing includes a top plate adapted to the outer contour of the top surface of the mounting base, and a hollow sleeve vertically fixed to the center of the top plate. The elastic step rod assembly includes a second spring vertically disposed in the hollow sleeve, a T-head rod coaxially disposed in the second spring, and a pressure handle with one end extending out of the hollow sleeve and the bottom end contacting the T-head rod.

5. A foot switch structure according to claim 4, characterized in that: The top of the deflection seat has an upwardly protruding slide section, the slide section including a vertex corresponding to the rotation axis of the deflection seat, and slide grooves extending symmetrically downward from the vertex to both sides of the rotation axis; the bottom end of the second spring is sleeved on the slide section and is limited, while the bottom end of the T-head rod abuts against the slide groove and switches within the slide grooves on both sides under the action of external downward pressure and the upward restoring force of the second spring.

6. The foot switch structure according to claim 1, characterized in that: Each group of pins includes three: a first pin corresponding to the rotation fulcrum of the electric contact plate and always electrically connected to the electric contact plate; and two second pins corresponding to the two ends of the electric contact plate for making on / off contact with the electric contact plate.

7. A foot switch structure according to claim 6, characterized in that: The cavity contains partitions for left and right limiting of each of the electrical contacts.

Images