Operating rod

Abstract

The utility model discloses a joystick, and belongs to the field of hydrostatic continuously variable transmissions. Comprising a support; the revolving bed is rotationally mounted on the bracket and is used for mounting an operating rod; the operating rod is mounted on the revolving bed and is used for operating gear shifting; the sensor mounting plate is detachably and fixedly arranged on the bracket; a reversing proximity switch; the sensor is mounted on the sensor mounting plate; the neutral position proximity switch is mounted on the sensor mounting plate; the detected panel is fixedly arranged on the operating rod and is used for being detected by the reversing proximity switch and the neutral position proximity switch; and the controller is electrically connected with the neutral position proximity switch, the reversing proximity switch, the engine starting circuit and the reversing horn circuit. The operating lever has the beneficial effect that the operating lever convenient to install is provided.

Description

Technical Field

[0001] This application relates to the field of hydrostatic continuously variable transmissions, and more specifically, to control levers. Background Technology

[0002] In agricultural vehicles using hydrostatic continuously variable transmissions (HST), relevant standards / guidelines all stipulate engine safety starting requirements. Specifically, the engine starting circuit can only be activated and the engine started when the HST control assembly is returned to the neutral position (HST midpoint). Additionally, a reversing warning is required when reversing.

[0003] Traditionally, a single contact on the control assembly triggers a pressure switch mounted on the chassis to activate the engine starting circuit and ensure safe engine starting. However, this method suffers from a small contact area and involves complex adjustments to the contact engagement position. Furthermore, a separate set of contacts is required to continuously activate the pressure switch throughout the reversing operation to provide a reversing warning.

[0004] The installation and adjustment are quite complex because multiple contacts need to be installed.

[0005] Therefore, an easy-to-install joystick is needed. Utility Model Content

[0006] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0007] To address the technical problems mentioned in the background section, some embodiments of this application provide a joystick, including: a bracket; a rotary base rotatably mounted on the bracket for mounting the joystick; a joystick mounted on the rotary base for operating gear shifting; a sensor mounting plate detachably fixedly mounted on the bracket; a reversing proximity switch mounted on the sensor mounting plate; a center position proximity switch mounted on the sensor mounting plate; a test panel fixedly mounted on the joystick for enabling the reversing proximity switch and the center position proximity switch to detect each other; and a controller electrically connected to the center position proximity switch, the reversing proximity switch, the engine start circuit, and the reversing horn circuit.

[0008] Furthermore, a main gear shift arm weldment is rotatably connected to the rotary base, and a control lever is rotatably mounted on the main gear shift arm weldment. A reset spring for resetting is connected between the main gear shift arm weldment and the control lever.

[0009] The installation is easy because the sensor mounting plate can be adjusted during installation using the center proximity switch and the reversing proximity switch mounted on the sensor mounting plate.

[0010] Furthermore, a first spring mounting plate is fixedly connected to the main gear shift arm weldment, a second spring mounting plate is fixedly connected to the control lever, and the two ends of the return spring are respectively connected to the first spring mounting plate and the second spring mounting plate.

[0011] The control lever is automatically reset by a reset spring.

[0012] Furthermore, a control limit panel is fixedly connected to the bracket. The control limit panel has a limit groove for the control lever to pass through and for limiting the movement stroke of the control lever. The limit groove has a forward gear area, a middle gear area, and a reverse gear area that are connected.

[0013] Furthermore, a rotary bushing is fixedly connected to the rotary seat, and the control lever has a first rod part, a second rod part, and a third rod part that are perpendicular to each other. The first rod part passes through the limiting groove, and the third rod part is inserted into the rotary bushing for rotational connection.

[0014] Furthermore, the forward and reverse gear areas of the limiting groove extend in the tangential direction of the circumference of the rotary seat, and the middle position area connects the forward and reverse gear areas and extends in the tangential direction of the circumference of the third rod.

[0015] Furthermore, the center zone has a first end connected to the forward gear zone and a second end connected to the reverse gear zone, with the first end located near the sensor mounting plate.

[0016] Furthermore, the second spring mounting plate is fixed to the third rod and is located on the side of the third rod's rotation axis close to the sensor mounting plate.

[0017] Furthermore, the center proximity switch and the reversing proximity switch detect the panel under test and transmit the signal to the controller, which then connects the engine start circuit and disconnects the reversing horn circuit.

[0018] When the reversing proximity switch detects the panel under test, and the neutral proximity switch does not detect the panel under test, the signal is transmitted to the controller, which then disconnects the engine starting circuit and the reversing horn circuit.

[0019] If the reversing proximity switch and the neutral proximity switch do not detect the panel under test, the signal is transmitted to the controller. The controller disconnects the engine starting circuit and connects the reversing horn circuit to supply power.

[0020] By setting a center proximity switch and a reversing proximity switch, the functions of center position sensing and reversing sensing can be realized.

[0021] The beneficial effects of this application are as follows: The present invention utilizes the characteristics of proximity sensors to creatively set the center position proximity switch and the reversing sensor switch on the same bracket. By fixing the same test panel on the control assembly, center position sensing and reversing sensing are realized respectively, thereby achieving the safety requirements of safe engine starting and reversing reminder, and providing a control lever that is easy to install. Attached Figure Description

[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0023] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0024] In the attached diagram:

[0025] Figure 1 This is a front view schematic diagram according to an embodiment of this application;

[0026] Figure 2 yes Figure 1 Top view schematic diagram of the embodiment;

[0027] Figure 3 yes Figure 1 Side view of the embodiment;

[0028] Figure 4 These are three views of the joystick in the first state in the embodiment;

[0029] Figure 5 These are three views of the joystick in the second state in the embodiment;

[0030] Figure 6 These are three views of the joystick in the third state in the embodiment;

[0031] Figure 7 This is a three-view diagram of the joystick in the fourth state in the embodiment.

[0032] Figure label:

[0033] 100. Bracket; 101. Rotary seat; 102. Control lever; 103. Sensor mounting plate; 104. Neutral position proximity switch; 105. Reverse proximity switch; 106. Test panel; 107. Control limit panel; 108. Main transmission arm welded component; 109. Rotary bushing; 110. First lever section; 111. Second lever section; 112. Third lever section; 113. Forward gear area; 114. Neutral position area; 115. Reverse gear area; 116. First end; 117. Second end; 118. First spring mounting plate; 119. Second spring mounting plate; 120. Return spring. Detailed Implementation

[0034] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0035] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0036] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0037] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0038] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] Reference Figure 1-7A control lever, used in agricultural vehicles, includes: a bracket 100, a rotary base 101, a control lever 102, a sensor mounting plate 103, a reversing proximity switch 105, a neutral proximity switch 104, a test panel 106, and a controller. The rotary base 101 is rotatably mounted on the bracket 100, and a main gear shift arm weldment 108 is rotatably connected to the rotary base 101. A rotary bushing 109 is fixedly connected to the main gear shift arm weldment 108. The longitudinal rod has a first rod portion 110, a second rod portion 111, and a third rod portion 112 that are perpendicular to each other. The third rod portion 112 is inserted into the rotary bushing 109 and rotatably connected. The sensor mounting plate 103 is detachably and fixedly mounted on the bracket 100. The reversing proximity switch 105 and the neutral proximity switch 104 are mounted on the sensor mounting plate 103. The test panel 106 is fixedly mounted on the first rod portion 110 of the control lever 102. The sensor mounting plate 103 is installed directly opposite the panel 106 being tested. The controller is electrically connected to the neutral proximity switch 104, the reversing proximity switch 105, the engine start circuit, and the reversing horn circuit.

[0040] The neutral proximity switch 104 and the reversing proximity switch 105 detect the panel under test 106 and transmit the signal to the controller. The controller connects the engine start circuit and disconnects the reversing horn circuit.

[0041] When the reversing proximity switch 105 detects the tested panel 106 and the neutral proximity switch 104 does not detect the tested panel 106, the signal is transmitted to the controller, which then disconnects the engine start circuit and the reversing horn circuit.

[0042] When the reversing proximity switch 105 and the neutral proximity switch 104 do not detect the tested panel 106, they transmit the signal to the controller. The controller disconnects the engine starting circuit and connects the reversing horn circuit to supply power.

[0043] A first spring plate 118 is fixedly connected to the main gear shift arm weld 108, and a second spring plate 119 is fixedly connected to the third rod portion 112 of the control lever 102. The two ends of the return spring 120 are respectively connected to the first spring plate 118 and the second spring plate 119.

[0044] A control limit panel 107 is fixedly connected to the bracket 100. The control limit panel 107 has a limit groove for the first lever portion 110 of the control lever 102 to pass through and limit the movement stroke of the control lever 102. The limit groove has a forward gear area 113, a middle gear area 114, and a reverse gear area 115 that are connected.

[0045] The forward and reverse gear areas 115 of the limiting groove extend in the tangential direction of the rotation circumference of the rotary seat 101, and the middle area 114 connects the forward gear area 113 and the reverse gear area 115 and extends in the tangential direction of the rotation circumference of the third rod 112.

[0046] The middle zone 114 has a first end 116 connected to the forward gear zone 113 and a second end 117 connected to the reverse gear zone. The first end 116 is located near the sensor mounting plate 103.

[0047] The control lever has the following states;

[0048] First state: When the control lever 102 is at the first end 116, the tested panel 106 is within the detection area of ​​the neutral proximity switch 104 and the reversing proximity switch 105. The neutral proximity switch 104 and the reversing proximity switch 105 detect the tested panel 106 and transmit a signal to the controller. The controller connects the engine starting circuit and disconnects the reversing horn circuit. This allows ignition starting operation, while the reversing horn circuit is disconnected, and the reversing horn does not operate.

[0049] Second state: When the lever 102 is in the forward gear zone 113, the tested panel 106 is not in the detection area of ​​the neutral proximity switch 104, but is still in the detection area of ​​the reversing proximity switch 105. The reversing proximity switch 105 detects the tested panel 106, while the neutral proximity switch 104 does not detect the tested panel 106, and transmits the signal to the controller. The controller disconnects the engine starting circuit and disconnects the reversing horn circuit. At this time, the engine cannot be started and the reversing horn does not work.

[0050] Third state: When the control lever 102 is at the second end 117, the tested panel 106 is not in the detection area of ​​the neutral proximity switch 104 and the reversing proximity switch 105. The controller disconnects the engine starting circuit, and the components connect to the reversing horn circuit. At this time, the engine cannot be ignited and the reversing horn works. When the control lever is released, the control lever 102 returns to the first state.

[0051] Third state: When the lever 102 is in the reverse gear area 115, the tested panel 106 is not in the detection area of ​​the neutral proximity switch 104 and the reversing proximity switch 105. The reversing proximity switch 105 and the neutral proximity switch 104 do not detect the tested panel 106, and transmit the signal to the controller. The controller disconnects the engine starting circuit, the engine cannot be ignited and started, and connects the reversing horn circuit to provide power.

[0052] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A joystick, used in agricultural vehicles, characterized by: include: support; Rotary base, rotatably mounted on a bracket, used to mount the control lever; The control lever, mounted on the rotary base, is used for shifting gears; The sensor mounting plate is detachably and securely mounted on the bracket. Reversing proximity switch; mounted on the sensor mounting plate; The center-position proximity switch is mounted on the sensor mounting plate. The panel under test is fixedly mounted on the control lever and is used for detection by the reversing proximity switch and the neutral proximity switch; The controller is electrically connected to the neutral proximity switch, the reversing proximity switch, the engine start circuit, and the reversing horn circuit.

2. The joystick according to claim 1, characterized in that: The main transmission arm weldment is rotatably connected to the rotary base, and the control lever is rotatably mounted on the main transmission arm weldment. A reset spring for resetting is connected between the main transmission arm weldment and the control lever.

3. The joystick according to claim 2, characterized in that: A first spring plate is fixedly connected to the main gear shift arm weldment, and a second spring plate is fixedly connected to the control lever. The two ends of the return spring are respectively connected to the first spring plate and the second spring plate.

4. The joystick according to claim 3, characterized in that: A control limit panel is fixedly connected to the bracket. The control limit panel has a limit groove for the control lever to pass through and for limiting the movement of the control lever. The limit groove has a forward gear area, a middle gear area, and a reverse gear area that are connected.

5. The joystick according to claim 4, characterized in that: A slewing sleeve is fixedly connected to the main gear shift arm weld. The control lever has a first rod part, a second rod part, and a third rod part that are perpendicular to each other. The first rod part passes through the limiting groove, and the third rod part is inserted into the slewing sleeve for rotational connection.

6. The joystick according to claim 5, characterized in that: The forward and reverse gear areas of the limiting groove extend in the tangential direction of the circumference of the rotary seat, and the middle area connects the forward and reverse gear areas and extends in the tangential direction of the circumference of the third rod.

7. The joystick according to claim 6, characterized in that: The middle zone has a first end connected to the forward gear zone and a second end connected to the reverse gear zone, with the first end located near the sensor mounting plate.

8. The joystick according to claim 5, characterized in that: The second spring mounting plate is fixed on the third rod and is located on the side of the third rod's rotation axis close to the sensor mounting plate.

9. The joystick according to claim 8, characterized in that: The center proximity switch and the reversing proximity switch detect the panel under test and transmit the signal to the controller. The controller connects the engine start circuit and disconnects the reversing horn circuit. When the reversing proximity switch detects the panel under test, and the neutral proximity switch does not detect the panel under test, the signal is transmitted to the controller, which then disconnects the engine starting circuit and the reversing horn circuit. If the reversing proximity switch and the neutral proximity switch do not detect the panel under test, the signal is transmitted to the controller. The controller disconnects the engine starting circuit and connects the reversing horn circuit to supply power.

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