A lever assembly for a digital display wrench and a digital display wrench

Abstract

This application discloses a lever assembly for a digital display wrench, belonging to the technical field of digital display wrenches. The lever assembly includes a lever body and a pan-tilt mechanism driven by the lever body. A detection module for detecting the direction of lever body movement is disposed below the pan-tilt mechanism. The pan-tilt mechanism includes a mounting housing, an X-axis support plate and a Y-axis support plate arranged perpendicularly to each other. Each X-axis and Y-axis support plate has a strip-shaped hole along its respective length. Both ends of the X-axis and Y-axis support plates pass through the mounting housing and are rotatably connected to the mounting housing via bearings. An eccentric pressing block is provided at the end of each X-axis and Y-axis support plate. When the lever body drives the X-axis or Y-axis support plate to rotate by a set angle, the eccentric pressing block outputs a set pressing force to the corresponding resistance strain gauge. The advantage of this application is that it provides a lever assembly for a digital display wrench that is easy to adjust.

Description

Technical Field

[0001] This application relates to the field of torque wrench technology, and more specifically, to a lever assembly for a digital display wrench and a digital display wrench. Background Technology

[0002] Torque wrenches are efficient and precise torque tools widely used in mechanical assembly, automotive repair, aerospace, and other fields. Existing digital torque wrenches have a control panel with a display screen and control buttons. The control buttons are used to select the wrench's operating mode and display control parameters such as the applied torque. In practical applications, the inventors found that setting control parameters via buttons is inefficient, and the small size of the control panel itself means that the buttons are also small, requiring full concentration and making operation inconvenient. Utility Model Content

[0003] 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.

[0004] To address the technical problems mentioned in the background section, some embodiments of this application provide a lever assembly for a digital display wrench, including a lever body and a pan-tilt mechanism driven by the lever body. A detection module for detecting the direction of lever body movement is disposed below the pan-tilt mechanism. The pan-tilt mechanism includes a mounting housing, an X-axis support plate and a Y-axis support plate arranged perpendicularly to each other. Each of the X-axis and Y-axis support plates has a strip-shaped hole along its respective length. Both ends of the X-axis and Y-axis support plates pass through the mounting housing and are rotatably connected to the mounting housing via bearings. An eccentric pressing block is disposed at the end of each of the X-axis and Y-axis support plates. One end of the lever body is provided with... The device has a lever cap, with one end extending into the mounting housing and passing through the strip holes on the X-axis and Y-axis support plates. The detection module includes a circuit board, with the mounting housing fixedly connected to the circuit board. Resistance strain gauges are arranged around the mounting housing on the circuit board, and the signal output terminals of the resistance strain gauges are connected to the control circuit on the circuit board to convert the pressure they receive into an electrical signal output. The eccentric pressing blocks located at both ends of the X-axis and Y-axis support plates are arranged in opposite directions. When the lever body drives the X-axis or Y-axis support plate to rotate by a set angle, the eccentric pressing block outputs a set amount of pressing force to the corresponding resistance strain gauge.

[0005] Pushing the nut moves the push rod body, which in turn moves the push rod body. This movement changes the resistance of the strain gauge, which in turn changes the voltage. The system outputs a voltage detection signal based on the user's operation, and adjusts the control parameters of the digital display wrench according to the output signal. Compared with traditional button settings, this method makes parameter adjustment much easier.

[0006] Furthermore, the lever assembly also includes an anti-accidental activation mechanism, comprising: a mounting block, fixedly connected to the operation panel; a protective shell, inserted into the mounting block; and a fastener, installed on the protective shell, for fixing the protective shell to the mounting block.

[0007] Furthermore, the fixing component includes: a connecting block, which is fixedly connected to the protective shell; a first slider, which is horizontally slidably connected to the connecting block; a limiting block, which is fixedly connected to the first slider; and a first spring, whose two ends are respectively fixedly connected to the connecting block and the first slider.

[0008] Furthermore, the connecting block is provided with a first groove extending along the length direction of the connecting block; the first slider moves along the first groove.

[0009] Furthermore, the first spring is located at one end of the first slider; the limiting block is located at the other end of the first slider.

[0010] Furthermore, the connecting block includes a clearance hole; the clearance hole allows the limiting block to pass through, and is spaced apart from the limiting block.

[0011] Furthermore, the mounting block includes a limiting groove; the limiting groove is used to limit the movement of the mounting block.

[0012] Furthermore, the mounting block includes a mounting groove; the protective shell portion is located within the mounting groove.

[0013] Other embodiments provide a digital display wrench, including a handle and an operation panel; the operation panel is provided with the aforementioned lever assembly for a digital display wrench. The beneficial effect of this application is that it provides a lever assembly for a digital display wrench with easily adjustable parameters. Attached Figure Description

[0014] 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.

[0015] 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.

[0016] In the attached diagram: Figure 1 This is an overall schematic diagram based on an embodiment of this application; Figure 2 This is a structural diagram of a part of the embodiment, mainly showing the structure of the mounting block and the protective shell; Figure 3 This is a structural schematic diagram of a part of the embodiment, mainly showing the structure of the eccentric pressing block; Figure 4 This is a structural schematic diagram of a part of an embodiment, mainly showing the structure of the strip hole; Figure 5 This is a structural schematic diagram as part of an embodiment, mainly showing the structure of the limiting block and the first slider.

[0017] Reference numerals: 100, lever assembly for digital display wrench; 101, operation panel; 102, lever body; 103, mounting housing; 104, resistance strain gauge; 105, mounting block; 105a, limiting groove; 105b, mounting groove; 106, protective shell; 107, X-axis support plate; 107a, strip hole; 108, eccentric pressing block; 109, Y-axis support plate; 113, connecting block; 113a, first sliding groove; 113b, clearance hole; 114, first slider; 115, limiting block; 116, first spring; 117, circuit board. Detailed Implementation

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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".

[0022] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] Reference Figure 1-5 A lever assembly 100 for a digital display wrench includes: a lever body 102, a pan-tilt mechanism driven by the lever body 102, a detection module for detecting the direction of movement of the lever body 102, and an anti-accidental contact mechanism to prevent accidental contact of the lever body 102. The detection module for detecting the direction of movement of the lever body 102 is located below the pan-tilt mechanism.

[0024] The gimbal mechanism includes a mounting housing 103, an X-axis support plate 107 and a Y-axis support plate 109 arranged perpendicularly to each other. Each of the X-axis and Y-axis support plates 107 and 109 has a strip-shaped hole 107a along its length. Both ends of the X-axis and Y-axis support plates 107 and 109 pass through the mounting housing 103 and are rotatably connected to the mounting housing 103 via bearings. Each end of the X-axis and Y-axis support plates 107 and 109 is provided with an eccentric pressing block 108. The lever body 102... One end is provided with a cap, and the other end extends into the mounting housing 103 and passes through the strip hole 107a on the X-axis support plate 107 and the Y-axis support plate 109. The detection module includes a circuit board 117. The mounting housing 103 is fixedly connected to the circuit board 117. Resistance strain gauges 104 are provided on the circuit board 117 around the mounting housing 103. The signal output end of the resistance strain gauge 104 is connected to the control circuit signal on the circuit board to convert the pressure it receives into an electrical signal output.

[0025] Among them, the eccentric pressing blocks 108 located at both ends of the X-axis support plate 107 and the Y-axis support plate 109 are arranged in opposite directions. When the lever body 102 drives the X-axis support plate 107 or the Y-axis support plate 109 to rotate by a set angle, the eccentric pressing block 108 outputs a set pressing force to the corresponding resistance strain gauge 104.

[0026] Push lever 102 to move lever 102 along the X-axis direction (refer to...) Figure 4 The X-axis support plate 107 does not move. The lever body 102 drives the Y-axis support plate 109 through the strip groove 107a of the Y-axis support plate. The Y-axis support plate 109 rotates, and the rotation of the Y-axis support plate 109 drives the eccentric pressing blocks 108 at both ends of the Y-axis support plate 109 to rotate. The cross-sectional area of ​​the resistance strain gauge 104 is adjusted by the arc surface of the eccentric pressing block 108. The resistance increases when the cross-sectional area increases and decreases when the cross-sectional area decreases, thereby adjusting the resistance of the resistance strain gauge 104.

[0027] When the lever 102 moves along the Y-axis, the Y-axis support plate 109 does not move. The lever body 102 drives the X-axis support plate 107 to rotate through the strip hole 107a. The rotation of the X-axis support plate 107 drives the eccentric pressing blocks 108 at both ends of the X-axis support plate 107 to rotate. The cross-sectional area of ​​the resistance strain gauge 104 is adjusted by the arc surface of the eccentric pressing block 108. The resistance increases when the cross-sectional area increases and decreases when the cross-sectional area decreases, thereby adjusting the resistance of the resistance strain gauge 104.

[0028] The anti-accidental activation mechanism includes: a mounting block 105, a protective housing 106, and a fastener for fixing the protective housing 106 to the mounting block 105. The mounting housing 103 is located inside and fixedly connected to the operation panel 101. The resistance strain gauge 104 is fixedly connected to the mounting housing 103. The mounting block 105 is fixedly connected to the operation panel 101. The protective housing 106 is inserted into the mounting block 105. The operation panel 101 has a cavity, and the mounting housing 103 and the resistance strain gauge 104 are located within the cavity.

[0029] A fastener is installed on the protective shell 106 to fix the protective shell 106 to the mounting block 105. The fastener includes a connecting block 113, a first slider 114, a limiting block 115, and a first spring 116. The connecting block 113 is fixedly connected to the protective shell 106. The first slider 114 is horizontally slidably connected to the connecting block 113. Specifically, the connecting block 113 has a first groove 113a extending along the length direction of the connecting block 113, and the first slider 114 moves along the first groove 113a. The limiting block 115 is fixedly connected to the first slider 114.

[0030] The first spring 116 is fixedly connected at both ends to the connecting block 113 and the first slider 114, respectively. The first spring 116 is located at one end of the first slider 114, and the limiting block 115 is located at the other end of the first slider 114. The connecting block 113 includes a clearance hole 113b, through which the limiting block 115 passes, and is spaced apart from the limiting block 115. The mounting block 105 includes a limiting groove 105a, which is used to limit the movement of the limiting block 115. The mounting block 105 also includes a mounting groove 105b, and a portion of the protective shell 106 is located within the mounting groove 105b. After adjusting the resistance of the strain gauge 104, push the first slider 114. The movement of the first slider 114 causes the limiting block 115 to move, so that the limiting block 115 retracts into the connecting block 113. Then, insert the protective shell 106 into the mounting groove 105b of the mounting block 105. Then release the first slider 114. Under the action of the first spring 116, the limiting block 115 will insert into the limiting groove 105a, thereby fixing the protective shell 106 and the mounting block 105. This prevents accidental contact with the lever 102 during actual operation and provides better protection for the lever 102.

[0031] Working process: Push the lever 102 to move it along the X-axis. The X-axis support plate 107 does not move. The lever body 102 drives the Y-axis support plate 109 through the strip groove 107a of the Y-axis support plate. The Y-axis support plate 109 rotates, which drives the eccentric pressing blocks 108 at both ends of the Y-axis support plate 109 to rotate. The cross-sectional area of ​​the resistance strain gauge 104 is adjusted by the arc surface of the eccentric pressing block 108. The resistance increases when the cross-sectional area increases and decreases when the cross-sectional area decreases, thereby adjusting the resistance of the resistance strain gauge 104.

[0032] When the lever 102 moves along the Y-axis, the Y-axis support plate 109 does not move. The lever body 102 drives the X-axis support plate 107 to rotate through the strip hole 107a. The rotation of the X-axis support plate 107 drives the eccentric pressing blocks 108 at both ends of the X-axis support plate 107 to rotate. The cross-sectional area of ​​the resistance strain gauge 104 is adjusted by the arc surface of the eccentric pressing block 108. The resistance increases when the cross-sectional area increases and decreases when the cross-sectional area decreases, thereby adjusting the resistance of the resistance strain gauge 104.

[0033] Resistance strain gauges 104 are arranged around the mounting housing 103 on the circuit board 117. The signal output terminals of the resistance strain gauges 104 are connected to the control circuit on the circuit board 117 to convert the pressure they receive into an electrical signal output. The control parameters of the digital display wrench are controlled according to the output electrical signal, which is more convenient for adjusting parameters compared with the traditional button setting.

[0034] After adjusting the resistance of the strain gauge 104, push the first slider 114. The movement of the first slider 114 causes the limiting block 115 to move, so that the limiting block 115 retracts into the connecting block 113. Then, insert the protective shell 106 into the mounting groove 105b of the mounting block 105. Then release the first slider 114. Under the action of the first spring 116, the limiting block 115 will insert into the limiting groove 105a, thereby fixing the protective shell 106 to the mounting block 105. This prevents accidental contact with the lever body 102 during actual operation and provides better protection for the lever 102.

[0035] This application also discloses a digital display wrench, including a handle and an operation panel; the operation panel is provided with the aforementioned lever assembly for the digital display wrench.

[0036] In another embodiment, for ease of operation, one end of the protective shell 106 is hinged to the mounting block 105, and the other end is fixed to the mounting block 105 by a fastener. When adjustment is required, simply loosening the fastener at one end allows the protective shell 106 to open, making operation even easier. The above description is merely an explanation of some preferred embodiments of this disclosure and 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 the 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 lever assembly for a digital display wrench, characterized in that, It includes a lever body (102) and a gimbal mechanism driven by the lever body (102), and a detection module for detecting the direction of the lever body (102) is provided below the gimbal mechanism. The gimbal mechanism includes a mounting housing (103), an X-axis support plate (107) and a Y-axis support plate (109) arranged perpendicularly to each other. The X-axis support plate (107) and the Y-axis support plate (109) are provided with strip holes (107a) along their respective length directions. Both ends of the X-axis support plate (107) and the Y-axis support plate (109) pass through the mounting housing (103) and are rotatably connected to the mounting housing (103) via bearings. The ends of the X-axis support plate (107) and the Y-axis support plate (109) are provided with eccentric pressing blocks (108). One end of the lever body (102) is provided with a lever cap, and the other end extends into the mounting housing (103) and passes through the strip hole (107a) on the X-axis support plate (107) and the Y-axis support plate (109); The detection module includes a circuit board (117), the mounting housing (103) is fixedly connected to the circuit board (117), and resistance strain gauges (104) are arranged on the circuit board (117) around the mounting housing (103). The signal output terminal of the resistance strain gauge (104) is connected to the control circuit signal on the circuit board (117) to convert the pressure it receives into an electrical signal output. Among them, the eccentric pressing blocks (108) located at both ends of the X-axis support plate (107) and the Y-axis support plate (109) are arranged in opposite directions. When the lever body (102) drives the X-axis support plate (107) or the Y-axis support plate (109) to rotate by a set angle, the eccentric pressing block (108) outputs a set pressing force to the corresponding resistance strain gauge (104).

2. The lever assembly for a digital display wrench according to claim 1, characterized in that: The toggle assembly also includes an anti-accidental activation mechanism, including: Mounting block (105) is fixedly connected to operation panel (101); The protective shell (106) is inserted into the mounting block (105); A fastener, installed on the protective shell (106), is used to fix the protective shell (106) to the mounting block (105).

3. The lever assembly for a digital display wrench according to claim 2, characterized in that: The fastener includes: The connecting block (113) is fixedly connected to the protective shell (106); The first slider (114) is horizontally slidably connected to the connecting block (113); The limiting block (115) is fixedly connected to the first slider (114); The first spring (116) is fixedly connected at both ends to the connecting block (113) and the first slider (114).

4. The lever assembly for a digital display wrench according to claim 3, characterized in that: The connecting block (113) is provided with a first groove (113a) extending along the length direction of the connecting block (113); The first slider (114) moves along the first groove (113a).

5. The lever assembly for a digital display wrench according to claim 3, characterized in that: The first spring (116) is located at one end of the first slider (114); The limiting block (115) is located at the other end of the first slider (114).

6. The lever assembly for a digital display wrench according to claim 3, characterized in that: The connecting block (113) includes a clearance hole (113b); The clearance hole (113b) allows the limiting block (115) to pass through, and is spaced apart from the limiting block (115).

7. The lever assembly for a digital display wrench according to claim 3, characterized in that: The mounting block (105) includes a limiting groove (105a); The limiting groove (105a) is used to limit the position of the limiting block (115).

8. The lever assembly for a digital display wrench according to claim 3, characterized in that: The mounting block (105) includes a mounting groove (105b); The protective shell (106) is partially located within the mounting groove (105b).

9. A digital display wrench, comprising a handle and an operation panel; characterized in that, The operation panel is provided with a lever assembly for a digital display wrench as described in any one of claims 1-8.

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