Linkage foot switch with self-locking structure

Abstract

The application provides a linkage foot switch with a self-locking structure, and belongs to the field of switch devices. The linkage foot switch comprises a lower shell, an upper shell rotatably mounted on the lower shell, a press switch arranged in the lower shell, a linkage structure for transmitting and triggering the press switch, a self-locking structure rotatably connected to the lower shell above the upper shell, and a linkage seat and a push rod slidably connected to each other. The linkage seat is provided with a linkage push plate for simultaneously triggering all the press switches fixedly mounted on the lower shell. Through cooperation of the push rod and the linkage seat, the foot switch can be driven by the push rod when being pressed, and the linkage seat can simultaneously trigger multiple press switches. The multiple press switches are respectively connected to different devices, so that multiple devices can be simultaneously controlled by one foot switch. In addition, the self-locking structure can prevent the upper shell from being mistakenly pressed, thereby improving the overall safety.

Description

Technical Field

[0001] This invention belongs to the field of switchgear, and particularly relates to a linkage foot switch with a self-locking structure. Background Technology

[0002] A foot switch is a switch used to control the start or stop of equipment by means of the foot, allowing operators to free their hands and perform more tasks. However, existing foot switches lack a self-locking mechanism, making them prone to misoperation and potential safety accidents. Furthermore, current foot switches are all single-switch structures, meaning one foot switch can only control one piece of equipment, hindering the simultaneous start or stop of multiple devices and limiting production efficiency. Summary of the Invention

[0003] Based on the aforementioned problems in the existing technology, the present invention provides a linkage foot switch with a self-locking structure, including a lower shell, an upper shell rotatably mounted on the lower shell, a push switch disposed inside the lower shell, and the upper shell being driveably and triggerably connected to the push switch. It also includes a self-locking structure, comprising a foot push plate located above the upper shell, connecting plates extending from both sides of the foot push plate, the connecting plates rotatably mounted on the lower shell after crossing the upper shell, a locking pin rotatably mounted at the end of the connecting plate away from the foot push plate, the connection point between the connecting plate and the lower shell being located between the locking pin and the foot push plate, a locking spring disposed at the end of the locking pin away from the connecting plate, the locking spring being connected to the lower shell, and an upwardly extending support post integrally formed at the end of the locking pin with the locking spring, a support block disposed on the upper shell at the corresponding position of the support post, when the locking spring is in its naturally extended state, the support post is located below the support block with a clearance fit between the two, and a support block for supporting the locking pin is disposed below the corresponding position of the support post on the lower shell.

[0004] The aforementioned foot switch with a self-locking structure also includes a protective shell, which is wrapped around the lower shell and the upper shell; the lower shell has a limiting block at the end of the locking pin away from the supporting block to prevent the locking pin from moving too far away from the supporting block.

[0005] The supporting block is provided with a receiving groove for accommodating the lock spring. The other end of the lock spring is fixedly connected to the receiving groove relative to the lock post. A limiting groove is provided below the receiving groove. The lock post is provided with a limiting plate that matches the limiting groove. The limiting plate and the limiting groove are in clearance fit.

[0006] The lower shell has several push-button switches fixedly installed inside. The upper shell is connected to all the push-button switches simultaneously and triggerably via a linkage structure. The linkage structure includes a push rod fixedly installed to the upper shell and a linkage seat rotatably connected to the lower shell. A return spring is sleeved on the push rod. One end of the return spring is connected to the upper shell, and the other end of the return spring is connected to the lower shell. The end of the push rod away from the upper shell is slidably connected to the linkage seat. The linkage seat is provided with a linkage push plate for simultaneously triggering all the push-button switches fixedly installed on the lower shell. The upper shell drives the linkage seat to rotate by pushing the push rod, and triggers all the push-button switches simultaneously through the linkage seat.

[0007] The push rod has a mounting part at the end furthest from the upper shell. The diameter of the mounting part is smaller than the diameter of other parts of the push rod. Two limiting slide plates are mounted on the mounting part through a guide ring. The middle of the limiting slide plate is a guide ring, and the two sides of the guide ring are provided with radially extending limiting wings. The thickness of the guide ring is greater than the thickness of the limiting wings, and one side of the guide ring coincides with one side of the limiting wing. The other side of the guide ring protrudes relative to the limiting wing to form a protrusion. The two limiting slide plates on the mounting part are symmetrically arranged and the protrusions are close to each other. A sliding groove is formed between the limiting wings of the two limiting slide plates. The linkage seat is provided with a sliding hole with a diameter smaller than the maximum length of the limiting slide plate. The mounting part of the push rod passes through the sliding hole, and the two limiting slide plates are located on both sides of the linkage seat so that the linkage seat can slide in the sliding groove.

[0008] The linkage seat includes a linkage push plate. Two laterally extending connecting rods are provided at both ends of one side of the linkage push plate. A rotating column for rotatable connection with the lower housing is provided on the connecting rod. One side of the linkage push plate is in contact with a push switch. A transmission plate is integrally formed on the other side of the linkage push plate, opposite to the other side of the connecting rod. The extension direction of the transmission plate is opposite to the extension direction of the connecting rod. A sliding hole is provided on the transmission plate, and two limiting slide plates are located on opposite sides of the transmission plate. Several triangular support plates are also provided on the transmission plate, and these triangular support plates are fixedly connected to the linkage push plate. Several structural reinforcing blocks for increasing the thickness are provided on the side of the linkage push plate where the transmission plate is located.

[0009] The lower shell has an aviation plug installed at one end of the foot pedal, away from the upper shell, with the same number of aviation plugs as the push-button switches. The aviation plugs and push-button switches are electrically connected in a one-to-one correspondence, and external devices and foot switches can be quickly plugged in through the aviation plugs.

[0010] The beneficial effects of this invention are as follows:

[0011] 1. The foot switch is equipped with a self-locking structure. The upper shell can only be pressed down after the foot pusher is pushed with the foot, thereby triggering the press switch. The upper shell cannot be pressed down when the foot pusher is not pushed, which can prevent accidental operation.

[0012] 2. Through the cooperation of the push rod and the linkage seat, when the foot switch is pressed, the push rod drives the linkage seat to simultaneously trigger multiple push switches. These push switches are connected to different devices, allowing a single foot switch to control multiple devices simultaneously. Furthermore, a triangular support plate is provided on the transmission plate, and a structural reinforcement block is installed on the linkage push plate, giving the entire linkage seat better structural strength, improving its service life, and enhancing the stability of the foot switch. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a linkage foot switch with a self-locking mechanism.

[0014] Figure 2 This is a three-dimensional structural diagram of a linkage foot switch with a self-locking mechanism, concealing the outer casing.

[0015] Figure 3 This is a three-dimensional structural diagram of a foot switch with a self-locking mechanism from another angle.

[0016] Figure 4 yes Figure 3 Enlarged view of point A.

[0017] Figure 5 This is a schematic diagram of the fit between the locking pin and the upper shell.

[0018] Figure 6 This is a cross-sectional view of the foot switch, with the outer casing hidden.

[0019] Figure 7 This is a schematic diagram showing the combination of the upper shell, the linkage structure, and the push switch.

[0020] Figure 8 This is a three-dimensional schematic diagram of the linkage structure.

[0021] Figure 9 This is a three-dimensional schematic diagram of the linkage structure from another angle.

[0022] Figure 10 This is a three-dimensional schematic diagram of the linkage structure from the third angle.

[0023] Figure 11 This is an exploded view of the interconnected structure. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0025] As attached Figure 1-11The illustrated foot switch with a self-locking structure includes a protective shell 8, an upper shell 1, a lower shell 2, and a self-locking structure 7. One end of the upper shell 1 has a pressing part 11, and the other end of the upper shell 1 opposite to the pressing part 11 has a cylindrical shaft 12. The lower shell 2 has a corresponding shaft hole on the cylindrical shaft 12. The lower shell 2 and the upper shell 1 are rotatably connected through the engagement of the cylindrical shaft 12 and the shaft hole. The protective shell 8 encloses the lower shell 2 and the upper shell 1. Two push switches 6 are installed inside the lower shell 2. Two push switches 6 are installed at the end of the lower shell 2 away from the pressing part 11 of the upper shell 1 for... An aviation plug 21 is connected to an external device. The aviation plug 21 and the push switch 6 are electrically connected in a one-to-one correspondence. The upper shell 1 is connected to the push switch 6 in a drive-activated and triggerable manner. The self-locking structure 7 includes a foot push plate 71 located above the upper shell 1. Connecting plates 72 extend from both sides of the foot push plate 71. The connecting plates 72 cross the upper shell 1 and are rotatably mounted to the side of the lower shell 2. A locking pin 73 is rotatably mounted at the end of the connecting plate 72 away from the foot push plate 71. The connection point between the connecting plate 72 and the lower shell 2 is located between the locking pin 73 and the foot push plate 71. The locking pin 73... A locking spring 74 is provided at the end of the locking pin 73 away from the connecting plate 72. The locking spring 74 is then connected to the lower shell 2. The locking pin 73 has an integrally formed upward-extending support post 75 at the end where the locking spring 74 is located. The upper shell 1 has a support block 76 at the position corresponding to the support post 75. When the locking spring 74 is in its naturally extended state, the support post 75 is located below the support block 76 and the two are in clearance fit. The lower shell 2 has a support block 77 below the support post 75 to support the locking pin 73. The support block 77 is provided with a space to accommodate the locking spring 74. The receiving groove 771 of the 4 is fixedly connected to the other end of the locking spring 74 relative to the locking pin 73. A limiting groove 772 is provided below the receiving groove 771. The locking pin 73 is provided with a limiting plate 731 that matches the limiting groove 772. The limiting plate 731 and the limiting groove 772 are in clearance fit, so that the locking pin 73 can rotate at a certain angle relative to the supporting block 77, thereby improving fault tolerance. The lower shell 2 is provided with a limiting block 78 at the end of the locking pin 73 away from the supporting block 77 to limit the locking pin 73 from moving too far away from the supporting block 77.

[0026] In a preferred embodiment, the upper shell 1 is simultaneously and triggerably connected to all push switches 6 via a linkage structure. The linkage structure includes a push rod 3 fixedly mounted to the upper shell 1 and a linkage seat 4 rotatably connected to the lower shell 2. One end of the push rod 3 is integrally formed and fixedly connected to the upper shell 1. A mounting portion 31 is provided at the end of the push rod 3 away from the upper shell 1. The diameter of the mounting portion 31 is smaller than the diameter of other parts of the push rod 3. Two limiting slide plates are sleeved on the mounting portion 31 via guide rings 32. The middle of the limiting slide plate is the guide ring 32, and radially extending limiting wings 33 are provided on both sides of the guide ring 32. The thickness of the guide ring 32 is greater than the thickness of the limiting wings 33. One side of the guide ring 32 coincides with one side of the limiting wing 33, and the other side of the guide ring 32 protrudes relative to the limiting wing 33 to form a protrusion 34. The two limiting slide plates on the mounting part 31 are symmetrically arranged and the protrusions 34 are close to each other. A sliding groove is formed between the limiting wings 33 of the two limiting slide plates. Finally, by screwing screws into the end of the mounting part 31, the two limiting slide plates are pressed and fixed to the mounting part 31 using the screw heads. The linkage seat 4 includes a linkage push plate 41. Both ends of one side of the linkage push plate 41 are provided with transversely extending connecting rods 47. A rotating column 43 for rotatably connecting with the lower shell 2 is fixedly provided on the connecting rod 47. One side of the push plate 41 is in contact with two push switches 6 fixedly mounted on the lower housing 2, and this side is used to simultaneously trigger all push switches 6; on the other side of the linkage push plate 41, and opposite to the other side of the connecting rod 47, a transmission plate 44 is integrally formed. The extension direction of the connecting rod 47 is opposite to the extension direction of the transmission plate 44. A sliding hole 42 with a diameter smaller than the maximum length of the limiting slide plate is opened on the transmission plate 44. The mounting part 31 of the push rod 3 passes through the sliding hole 42. The two limiting slide plates are located on both sides of the transmission plate 44, allowing the transmission plate 44 to slide in the sliding groove. The width of the sliding groove is greater than the thickness of the transmission plate 44, allowing the transmission plate 44 to form a shape relative to the limiting slide plates. A certain included angle is provided to facilitate the rotation of the linkage seat 4. Two triangular support plates 45 are provided on the transmission plate 44. The two triangular support plates 45 are located on both sides of the sliding hole 42. The triangular support plates 45 are then fixedly connected to the linkage push plate 41. On the side of the transmission plate 44, the linkage push plate 41 is provided with a structural reinforcing block 46 for increasing the thickness on both sides of the transmission plate 44. The push rod 3 is sleeved with a return spring 5. One end of the return spring 5 is connected to the upper shell 1, and the other end of the return spring 5 is connected to the lower shell 2. The upper shell 1 drives the linkage seat 4 to rotate by pushing the push rod 3, and triggers all the push switches 6 at the same time through the linkage seat 4.

[0027] The foot switch provided by this invention is first electrically connected to two different devices that need to be linked, so that the two devices are in a linked state. When the switch needs to be triggered, the foot push plate 71 is pushed backward by the ball of the foot. After the foot push plate 71 is subjected to force, it rotates and drives the locking pin 73 forward through the connecting plate 72, so that the support pin 75 and the support block 76 are misaligned. At this time, the upper shell 1 can be stepped on. Then, stepping on the upper shell 1, the upper shell 1 is pressed down and drives the push rod 3 to move downward. At the same time, the upper shell 1 compresses the return spring 5. When the push rod 3 moves downward, it drives the linkage seat 4 to swing downward through the limit slide plate. Then the linkage push plate 41 and the two push switches 6 are separated. At this time, the foot is retracted, the upper shell 1 loses the downward pressing force and rebounds upward under the action of the return spring 5, driving the push rod 3 and the linkage seat 4 to reset. At this time, the linkage push plate 41 touches the push switch 6 again to achieve a trigger.

[0028] When the foot stops pushing the foot plate 71, the locking pin 73 retracts and resets under the action of the locking spring 74, so that the support pin 75 returns to the bottom of the support block 76. The cooperation between the support block 76 and the support pin 75 prevents the upper shell 1 from being stepped on, thus avoiding misoperation.

[0029] The above-described embodiments are merely one implementation of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A foot switch with a self-locking structure, comprising a lower shell (2), an upper shell (1) rotatably mounted on the lower shell (2), a push switch (6) disposed inside the lower shell (2), and the upper shell (1) being tractably and triggerably connected to the push switch (6), characterized in that, It also includes a self-locking structure (7) and a protective shell (8). The self-locking structure (7) includes a foot push plate (71) located above the upper shell (1). Connecting plates (72) extend from both sides of the foot push plate (71). The connecting plates (72) cross the upper shell (1) and are rotatably mounted on the lower shell (2). A locking pin (73) is rotatably mounted on the end of the connecting plate (72) away from the foot push plate (71). The connection point between the connecting plate (72) and the lower shell (2) is located between the locking pin (73) and the foot push plate (71). A locking spring (74) is provided on the end of the locking pin (73) away from the connecting plate (72). The locking spring (74) is then connected to the lower shell (2). The locking pin (73) is provided with... One end of the locking spring (74) is integrally formed with an upwardly extending support post (75). The upper shell (1) is provided with a support block (76) at the position corresponding to the support post (75). When the locking spring (74) is in its natural extended state, the support post (75) is located below the support block (76) and the two are in a clearance fit. The lower shell (2) is provided with a support block (77) for supporting the locking pin (73) below the corresponding position of the support post (75). The protective shell (8) is wrapped around the lower shell (2) and the upper shell (1). The lower shell (2) is provided with a support block (77) at the end of the locking pin (73) away from the support block (77) to limit the locking pin (73) from moving too far away from the support block (77). 7) Limiting block (78); The supporting block (77) is provided with a receiving groove (771) for accommodating the locking spring (74), the other end of the locking spring (74) relative to the locking post (73) is fixedly connected to the receiving groove (771), a limiting groove (772) is provided below the receiving groove (771), the locking post (73) is provided with a limiting plate (731) that matches the limiting groove (772), the limiting plate (731) and the limiting groove (772) are in clearance fit; Several push switches (6) are fixedly installed in the lower shell (2), the upper shell (1) is connected to all push switches (6) simultaneously and triggerably through a linkage structure, the linkage structure The device includes a push rod (3) fixedly installed on the upper shell (1) and a linkage seat (4) rotatably connected to the lower shell (2). The push rod (3) is fitted with a return spring (5). One end of the return spring (5) is connected to the upper shell (1), and the other end of the return spring (5) is connected to the lower shell (2). The end of the push rod (3) away from the upper shell (1) is slidably connected to the linkage seat (4). The linkage seat (4) is provided with a linkage push plate (41) for simultaneously triggering all the push switches (6) fixedly installed on the lower shell (2). The upper shell (1) drives the linkage seat (4) to rotate by pushing the push rod (3) and simultaneously triggers all the push switches (6) through the linkage seat (4).

2. A linkage foot switch with a self-locking structure according to claim 1, characterized in that, The push rod (3) has a mounting part (31) at the end away from the upper shell (1). The diameter of the mounting part (31) is smaller than the diameter of other parts of the push rod (3). Two limiting slide plates are mounted on the mounting part (31) through a guide ring (32). The middle part of the limiting slide plate is the guide ring (32). Limiting wings (33) extending radially are provided on both sides of the guide ring (32). The thickness of the guide ring (32) is greater than the thickness of the limiting wing (33), and one side of the guide ring (32) coincides with one side of the limiting wing (33). On the other side of 32), a protrusion (34) is formed relative to the limiting wing (33). The two limiting slides on the mounting part (31) are symmetrically arranged and the protrusions (34) are close to each other. A sliding groove is formed between the limiting wings (33) of the two limiting slides. The linkage seat (4) is provided with a sliding hole (42) with a diameter smaller than the maximum length of the limiting slide. The mounting part (31) of the push rod (3) passes through the sliding hole (42). The two limiting slides are located on both sides of the linkage seat (4) so ​​that the linkage seat (4) can slide in the sliding groove.

3. A foot switch with a self-locking structure according to claim 2, characterized in that, The linkage seat (4) includes a linkage push plate (41). Both ends of one side of the linkage push plate (41) are provided with horizontally extending connecting rods (47). The connecting rods (47) are provided with rotating columns (43) for rotating connection with the lower shell (2). One side of the linkage push plate (41) is in contact with the push switch (6). The other side of the linkage push plate (41) and the side opposite to the connecting rod (47) are integrally formed with a transmission plate (44). The extension direction of the transmission plate (44) is opposite to the extension direction of the connecting rod (47). The sliding hole (42) is provided on the transmission plate (44). Two limiting slide plates are located on both sides of the transmission plate (44). The transmission plate (44) is also provided with several triangular support plates (45). The triangular support plates (45) are then fixedly connected to the linkage push plate (41). The linkage push plate (41) is provided with several structural reinforcing blocks (46) for increasing the thickness on the side where the transmission plate (44) is provided.

4. A foot switch with a self-locking structure according to claim 3, characterized in that, The lower shell (2) has an aviation plug (21) of the same number as the push switch (6) installed at one end of the pressing part (11) away from the upper shell (1). The aviation plug (21) and the push switch (6) are electrically connected in a one-to-one correspondence.

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