An operating handle

Abstract

This utility model discloses a housing, inside which are installed several microswitches and one push-button switch. Each microswitch is connected in series with the push-button switch. A fork for controlling the opening and closing of the microswitches is installed in the housing, with its upper end protruding from the top surface of the housing for the operator's thumb to operate. A pressing plate is movably installed on the side of the housing, with the button of the push-button switch contacting the pressing plate. A safety baffle is connected to the side of the housing, with its center opposite the pressing plate. By setting the push-button switch as the power switch for the operating handle, opening and closing the switch is convenient, reducing the possibility of forgetting to turn off the operating handle. The safety baffle on the side of the housing protects the pressing plate, thus preventing accidental activation of the push-button switch.

Description

Technical Field

[0001] This utility model relates to the field of control levers for mechanical equipment, and specifically to an operating handle. Background Technology

[0002] Large construction machinery, such as excavators, forklifts, and agricultural machinery, are relatively complex to operate. Besides basic movement, they require control of multiple functions, which are achieved by cranking handles and using buttons on those handles. Typically, the operating handles contain multiple microswitches, such as the multi-functional electric control operating handle disclosed in CN 222167493U and the electric control operating handle for loading vehicles disclosed in CN 216052798U. The power switches for these existing operating handles are usually located on the machinery itself, making them prone to accidental activation or forgetting to turn off the power switch. This can lead to accidental activation of the handle or buttons on the handle, resulting in safety hazards due to incorrect operation. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an operating handle, which is achieved through the following technical solution:

[0004] An operating handle includes a housing, inside which are installed a plurality of microswitches and a push-button switch. Each microswitch is connected in series with the push-button switch. A fork for controlling the opening and closing of the microswitches is installed in the housing. The upper end of the fork protrudes from the top surface of the housing so that the operator can move the fork with his thumb. A pressing plate is movably installed on the side of the housing. The button of the push-button switch contacts the pressing plate. A safety baffle is connected to the side of the housing, with the middle part of the safety baffle opposite to the pressing plate.

[0005] Preferably, the safety baffle is composed of a first baffle and a second baffle. The first baffle has an arc-shaped part at each of its upper and lower ends, and the second baffle has an arc-shaped part at each of its upper and lower ends. The arc-shaped part at the upper end of the first baffle and the arc-shaped part at the upper end of the second baffle combine to form an upper annular part, which is engaged with an annular groove provided on the outer surface of the upper end of the housing. The arc-shaped part at the lower end of the first baffle and the arc-shaped part at the lower end of the second baffle combine to form a lower annular part, which is engaged with a protruding ring formed on the outer surface of the lower end of the housing.

[0006] Preferably, the side of the housing is provided with a receiving groove, and the two opposite groove walls of the receiving groove are provided with opposite positioning holes. The lower end of the pressing block protrudes from both sides to form a fixed shaft, and the two fixed shafts are respectively inserted into the two positioning holes. The upper end of the pressing block protrudes upward to form a protrusion, and the top of the receiving groove protrudes downward to form a limiting part, which abuts against the side of the protrusion facing away from the button switch.

[0007] Preferably, the housing includes a first part and a second part. The first part has a first recess on its side, and the second part has a second recess on its side. The first recess and the second recess combine to form a receiving groove. The first recess has a notch, and the second recess has a notch. The two notches combine to form a side opening of the housing. The button of the push-button switch protrudes outward from the side opening to contact the pressing plate.

[0008] Preferably, the housing has two microswitches connected in series inside, the lower end of the shift fork has two actuating parts located inside the housing, and a horizontal rotating shaft is installed in the middle of the shift fork, through which the shift fork is rotatably connected to the housing.

[0009] Preferably, the housing includes a first part and a second part. The first part is provided with a positioning groove, and the second part is provided with a positioning rib and a positioning post. The positioning rib and the positioning groove cooperate to achieve mutual positioning of the first part and the second part. The first part and the second part are connected by screws. A bracket is installed in the cavity formed by the combination of the first part and the second part, and two microswitches are installed on the bracket.

[0010] Preferably, the top of the housing has an upper opening, the upper end of the shift fork extends out of the housing from the upper opening, and a rubber cover is installed on the top of the housing to close the upper opening.

[0011] This utility model has the following beneficial effects:

[0012] A push-button switch is installed in the housing as the power switch for the operating handle. The pressing block of the push-button switch is located on the side of the operating handle. The push-button switch can only be turned on by holding the operating handle. It is convenient to turn the push-button switch on and off, reducing the possibility of forgetting to turn off the power of the operating handle. A safety baffle is installed on the side of the housing to protect the pressing block and prevent it from being accidentally pressed, thereby preventing the push-button switch from being accidentally pressed. Attached Figure Description

[0013] Figure 1 This is a side view of the operating handle according to an embodiment of the present invention;

[0014] Figure 2 yes Figure 1 One of the cross-sectional views of the operating handle;

[0015] Figure 3 yes Figure 1 The second sectional view of the operating handle;

[0016] Figure 4 yes Figure 1 An exploded view of the control handle. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0019] like Figures 1 to 4 As shown, this embodiment discloses an operating handle, including a housing 1. Two microswitches 2 and a push-button switch 3 are installed inside the housing 1. The top of the housing 1 has an upper opening, which is closed by a rubber cover 6. A fork 4 for controlling the opening and closing of the microswitches is installed in the housing. The lower end of the fork 4 has two actuating parts 41, which are located inside the housing 1. A horizontal rotating shaft 42 is installed in the middle of the fork 4. The fork 4 is rotatably connected to the housing 1 through the horizontal rotating shaft 42. The upper end of the fork 4 extends out of the housing 1 from the upper opening. The two actuating parts 41 correspond to the two microswitches 2 respectively. By rotating the fork 4, the two actuating parts 41 squeeze or release the corresponding microswitches 2 respectively, thereby realizing the opening and closing of the microswitches 2.

[0020] The number of microswitches 2 is not limited to two; it can be one or more. The number of toggle parts 41 corresponds one-to-one with the number of microswitches 2, with each toggle part 41 controlling one microswitch 2.

[0021] The housing 1 has a side opening on its side, and a pressing block 5 is movably installed at the side opening. The button of the push-button switch 3 extends out of the housing 1 from the side opening and contacts the pressing block 5. When the pressing block 5 is pressed in the horizontal direction, the pressing block 5 drives the push-button switch 3 to open or close.

[0022] Two microswitches 2 are connected in parallel, and both microswitches 2 are connected in series with push-button switch 3. Push-button switch 3 can be electrically connected to the control system of the machine on which the operating handle is installed, and push-button switch 3 serves as the main power switch of the machine. The two microswitches 2 can only be energized by pressing push-button switch 3 first.

[0023] A push-button switch is installed in the handle, with a pressure plate controlling its on / off state located on the side of the handle. This push-button switch serves as the main power switch for the handle. The operator holds the handle and presses the pressure plate to turn on the push-button switch, after which the microswitch is energized. A safety guard is installed on the side of the handle to protect the pressure plate and prevent accidental activation. Integrating the push-button switch as a power switch into the operating handle makes turning the handle on and off easier and more convenient, reducing the frequency of forgetting to turn off the power.

[0024] The pressing block 5 is located on the side of the operating handle. When the four fingers (excluding the thumb) grip the pressing block 5, the push-button switch 3 is turned on or off. The thumb moves the upper end of the shift fork 4, causing the two toggle parts 41 to swing, thereby controlling the opening and closing of the two microswitches 2. The push-button switch 3 controls whether the two microswitches 2 are powered on, preventing accidental activation of the shift fork 4 and thus enhancing mechanical safety. The push-button switch 3 can be designed as the main power switch; only when the pressing block 5 presses the push-button switch 3 will the microswitches 2 and the swinging motion of the handle generate a signal output.

[0025] A rubber cover 6 is installed on the top of the housing, sealing the upper opening. The shape of the top of the rubber cover 6 matches the shape of the top of the shift fork 4. The outer surface of the rubber cover 6 has an annular groove, and a flexible open metal ring 7 is embedded in the annular groove, so that the rubber cover 6 is in close contact with the housing 1, thereby fixing the rubber cover 6 to the housing 1. The rubber cover 6 can also be installed on the housing 1 in other ways, such as by adhesive bonding.

[0026] A safety baffle 8 is connected to the side of the housing 1. The safety baffle 8 is C-shaped. The two free ends of the baffle are connected to the upper and lower ends of the housing 1, respectively. The middle part of the safety baffle 8 is opposite to the pressing plate. Furthermore, there is space between the middle part of the safety baffle 8 and the pressing plate for the operator to insert four fingers other than the thumb.

[0027] The safety baffle 8 is composed of a first baffle 81 and a second baffle 82, which are connected by screws and clips. In other embodiments, the first baffle 81 and the second baffle 82 may also be connected by welding or adhesive bonding.

[0028] There are various ways to connect the safety baffle 8 to the housing 1, such as screw connection or welding. In this embodiment, the first baffle 81 has an arc-shaped portion 83 at both its upper and lower ends, and the second baffle 82 has an arc-shaped portion 83 at both its upper and lower ends. The arc-shaped portion 83 at the upper end of the first baffle 81 and the arc-shaped portion 83 at the upper end of the second baffle 82 combine to form an upper annular portion 84, which is engaged with the annular groove 12 provided on the outer surface of the upper end of the housing 1. Similarly, the arc-shaped portion 83 at the lower end of the first baffle 81 and the arc-shaped portion 83 at the lower end of the second baffle 82 combine to form a lower annular portion 85, which is engaged with the protruding ring 11 formed on the outer surface of the lower end of the housing 1. In other embodiments, the connection method between the safety baffle 8 and the housing 1 is not limited to this.

[0029] Specifically, the housing 1 includes a first part 13 and a second part 14. The first part 13 is provided with a positioning groove, and the second part 14 is provided with a positioning rib 15 and a positioning post 16. The positioning rib 15 and the positioning groove cooperate to achieve mutual positioning of the first part 13 and the second part 14. The first part 13 and the second part 14 are connected by screws. A bracket 9 is installed in the cavity formed by the combination of the first part 13 and the second part 14, and two microswitches 2 are mounted on the bracket 9.

[0030] The first part 13 has a first recess on its side, and the second part 14 has a second recess on its side. The first recess and the second recess together form a receiving groove. The side opening of the housing 1 is opened at the bottom of the receiving groove (that is, the first recess has a notch 19, the second recess has a notch 19, and the two notches 19 together form the side opening of the housing 1, and the button of the push-button switch 3 protrudes outward from the side opening).

[0031] A positioning hole 16 is provided on the inner wall of the first recess and the inner wall of the second recess. The two positioning holes 16 are coaxially opposite each other. A fixed shaft 52 protrudes from both sides of the lower end of the pressing block 5. The two fixed shafts 52 are respectively inserted into the two positioning holes 16, and the pressing block 5 can swing around the fixed shafts 42. The upper end of the pressing block protrudes upward to form a protrusion 51. The top of the receiving groove protrudes downward to form a limiting part 17 (see Figure 2 The limiting part 17 abuts against the side of the protrusion 51 facing away from the button switch 3 to prevent the pressing block from detaching from the housing 1, and the safety baffle 8 contacts the button of the button switch 3 on the side near the bottom of the receiving groove. In other embodiments, the installation method of the pressing block 5 is not limited to this.

[0032] The bottom surface of the housing 1 has a hole, and the upper end of a control lever 18 is inserted into the housing 1 from bottom to top and fixedly connected to the housing 1 by a pin 10. In other embodiments, the installation method of the control lever 18 is not limited to this.

[0033] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model. Therefore, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. An operating handle, characterized in that The device includes a housing, inside which are installed several microswitches and a push-button switch. Each microswitch is connected in series with the push-button switch. A lever fork for controlling the opening and closing of the microswitches is installed in the housing. The upper end of the lever fork protrudes from the top surface of the housing so that the operator can move the lever fork with their thumb. A pressing plate is movably installed on the side of the housing. The button of the push-button switch contacts the pressing plate. A safety baffle is connected to the side of the housing, with the middle part of the safety baffle opposite to the pressing plate.

2. The operating handle of claim 1, wherein The safety baffle is composed of a first baffle and a second baffle. The first baffle has an arc-shaped part at each of its upper and lower ends, and the second baffle has an arc-shaped part at each of its upper and lower ends. The arc-shaped part at the upper end of the first baffle and the arc-shaped part at the upper end of the second baffle combine to form an upper annular part, which is engaged with an annular groove provided on the outer surface of the upper end of the housing. The arc-shaped part at the lower end of the first baffle and the arc-shaped part at the lower end of the second baffle combine to form a lower annular part, which is engaged with a protruding ring formed on the outer surface of the lower end of the housing.

3. The operating handle according to claim 1, characterized in that, The side of the housing is provided with a receiving groove, and the two opposite groove walls of the receiving groove are provided with opposite positioning holes. The lower end of the pressing block protrudes on both sides to form a fixed shaft, and the two fixed shafts are respectively inserted into the two positioning holes. The upper end of the pressing block protrudes upward to form a protrusion, and the top of the receiving groove protrudes downward to form a limiting part, which abuts against the side of the protrusion facing away from the button switch.

4. The operating handle according to claim 3, characterized in that, The housing includes a first part and a second part. The first part has a first recess on its side, and the second part has a second recess on its side. The first recess and the second recess are combined to form a receiving groove. The first recess has a notch, and the second recess has a notch. The two notches are combined to form a side opening of the housing. The button of the push-button switch protrudes outward from the side opening to contact the pressing plate.

5. The operating handle according to claim 1, characterized in that, The housing contains two microswitches connected in series. The lower end of the shift fork has two actuating parts located inside the housing. A horizontal rotating shaft is installed in the middle of the shift fork, and the shift fork is rotatably connected to the housing through the horizontal rotating shaft.

6. The operating handle according to claim 5, characterized in that, The housing includes a first part and a second part. The first part is provided with a positioning groove, and the second part is provided with a positioning rib and a positioning post. The positioning rib and the positioning groove cooperate to achieve mutual positioning of the first part and the second part. The first part and the second part are connected by screws. A bracket is installed in the cavity formed by the combination of the first part and the second part, and two microswitches are installed on the bracket.

7. The operating handle according to claim 1, characterized in that, The housing has an upper opening at the top, and the upper end of the shift fork extends out of the housing from the upper opening. A rubber cover is installed on the top of the housing to close the upper opening.

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