A detection device for an electric circular saw

Abstract

The utility model discloses a detection device of electric circular saw, include: frame body subassembly, fixed component and detection subassembly, the detection subassembly includes: first detection frame, first detector, second detection frame and second detector, first detection frame and second detection frame all are located on frame body subassembly, first detection frame corresponds the initial end at electric circular saw lower shield closing process, second detection frame corresponds the end at electric circular saw lower shield closing process, first detector is located on first detection frame, and the detection end of first detector is towards the initial end at electric circular saw lower shield closing process, second detector is located on second detection frame, and the detection end of second detector is towards the end at electric circular saw lower shield closing process, the utility model discloses through calculating the time difference of lower shield in the first detector and second detector just can calculate the closing time of lower shield, and the simple structure of detection device, low in cost reduces the production cost of electric circular saw.

Description

Technical Field

[0001] This utility model relates to the field of electric circular saw technology, and in particular to a testing device for electric circular saws. Background Technology

[0002] Circular saws are common power cutting tools widely used for cutting materials such as wood, metal, and plastics. Measuring the closing time of the lower guard on a circular saw is an important safety inspection item, mainly used to assess whether the rebound speed of the guard after triggering meets safety standards. Current technology typically uses high-speed cameras for inspection. High-speed cameras can accurately record the movement trajectory and time of the guard; however, high-speed cameras are expensive, and to meet production needs, multiple high-speed cameras need to be used simultaneously, resulting in high production costs for circular saws. Summary of the Invention

[0003] According to an embodiment of the present invention, a detection device for an electric circular saw is provided, comprising: a frame assembly, a fixing assembly, and a detection assembly;

[0004] The electric circular saw is mounted on the frame assembly, the fixing assembly is used to fix the electric circular saw on the frame assembly, and the detection assembly is used to detect the closing time of the lower guard of the electric circular saw.

[0005] The detection assembly includes: a first detection frame, a first detector, a second detection frame, and a second detector;

[0006] The first and second detection frames are both mounted on the frame assembly. The first detection frame corresponds to the initial end of the closing process of the lower guard of the electric circular saw, and the second detection frame corresponds to the end of the closing process of the lower guard of the electric circular saw. The first detector is mounted on the first detection frame, with its detection end facing the initial end of the closing process of the lower guard of the electric circular saw. The second detector is mounted on the second detection frame, with its detection end facing the end of the closing process of the lower guard of the electric circular saw.

[0007] Furthermore, the frame assembly includes: a base plate and a support frame;

[0008] The support frame is mounted on the base plate, part of the electric circular saw is located on the support frame, the fixing component is located on the support frame, and both the first and second detection frames are mounted on the base plate.

[0009] Furthermore, the fixing component includes: a first fixing member and a second fixing member;

[0010] The first and second fixing members are respectively located on both sides of the electric circular saw and are used to fix the electric circular saw on the support frame.

[0011] Furthermore, the first fixing member includes: a first rotating shaft, a first fixing plate, and a fixing pad;

[0012] The first rotating shaft is mounted on the support frame. A strip hole is provided on the first fixed plate. The first rotating shaft passes through the strip hole on the first fixed plate. The first fixed plate can rotate on the first rotating shaft. Fixed pads are provided at the bottom of both ends of the first fixed plate. There is a gap between the fixed pads and the support frame.

[0013] Furthermore, the first fixing member also includes: a positioning bolt and a fixing spring;

[0014] The first fixed plate has a positioning bolt at its first end, and a spring groove is provided on the fixing pad at the first end of the first fixed plate. One end of the positioning bolt passes through the first fixed plate and extends into the spring groove. The fixing spring is located in the spring groove and is sleeved on the positioning bolt. The fixing spring is in a compressed state.

[0015] Furthermore, the second fixing member includes: a second rotating shaft and a second fixing plate;

[0016] The second rotating shaft is mounted on the support frame, and a strip hole is provided on the second fixed plate. The second rotating shaft passes through the strip hole on the second fixed plate, and the second fixed plate can rotate on the second rotating shaft.

[0017] Furthermore, both the first and second testing frames include: a switch base, a horizontal rod, a vertical rod, a longitudinal rod, and a connecting sleeve;

[0018] The switch base is mounted on the base plate and is used to turn the first detector or the second detector on or off. The horizontal rod is located on one side of the switch base. One end of the vertical rod is slidably connected to the horizontal rod. The longitudinal rod is slidably mounted on the vertical rod. One end of the longitudinal rod is fitted with a connecting sleeve, and the first detector or the second detector is fixed on the connecting sleeve.

[0019] According to an embodiment of the present invention, a detection device for an electric circular saw is provided. The electric circular saw to be detected is fixed on the frame assembly by a fixing component. During the closing process, the lower guard of the electric circular saw will pass through the detection positions of the first detector and the second detector in sequence. By calculating the time difference between the lower guard passing through the first detector and the second detector, the closing time of the lower guard can be calculated. The detection device has a simple structure and low cost, thereby reducing the production cost of the electric circular saw.

[0020] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0021] Figure 1This is a structural diagram of a detection device for an electric circular saw according to an embodiment of the present invention;

[0022] Figure 2 This is a structural diagram of a detection device for an electric circular saw according to an embodiment of the present invention;

[0023] Figure 3 This is a front view of a detection device for an electric circular saw according to an embodiment of the present invention;

[0024] Figure 4 This is a top view of a detection device for an electric circular saw according to an embodiment of the present invention.

[0025] In the figure, the following labels are used: 1 is the frame assembly, 11 is the base plate, 12 is the support frame, 2 is the fixing assembly, 21 is the first rotating shaft, 22 is the first fixing plate, 23 is the fixing pad, 24 is the positioning bolt, 25 is the second rotating shaft, 26 is the second fixing plate, 3 is the first detection frame, 31 is the switch base, 32 is the horizontal rod, 33 is the vertical rod, 34 is the longitudinal rod, 35 is the connecting sleeve, and 4 is the second detection frame. Detailed Implementation

[0026] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0027] First, combine Figures 1-4 This invention describes a detection device for an electric circular saw according to an embodiment of the present invention, used to measure the closing time of the lower guard of the electric circular saw.

[0028] like Figures 1-4 As shown, a detection device for an electric circular saw according to an embodiment of the present invention includes: a frame assembly 1, a fixing assembly 2, and a detection assembly;

[0029] The electric circular saw is mounted on the frame assembly 1, the fixing assembly 2 is used to fix the electric circular saw on the frame assembly 1, and the detection assembly is used to detect the closing time of the lower guard of the electric circular saw.

[0030] The detection assembly includes: a first detection frame 3, a first detector, a second detection frame 4, and a second detector;

[0031] The first detection frame 3 and the second detection frame 4 are both mounted on the frame assembly 1. The first detection frame 3 corresponds to the initial end of the closing process of the lower guard of the electric circular saw, and the second detection frame 4 corresponds to the end of the closing process of the lower guard of the electric circular saw. The first detector is mounted on the first detection frame 3, with its detection end facing the initial end of the closing process of the lower guard of the electric circular saw. The second detector is mounted on the second detection frame 4, with its detection end facing the end of the closing process of the lower guard of the electric circular saw.

[0032] This application uses a fixing component 2 to fix the electric circular saw to be tested onto the frame component 1. During the closing process, the lower guard of the electric circular saw will pass through the detection positions of the first detector and the second detector in sequence. By calculating the time difference between the lower guard passing through the first detector and the second detector, the closing time of the lower guard can be calculated. The detection device has a simple structure and low cost, which reduces the production cost of the electric circular saw.

[0033] The frame assembly 1 includes: a base plate 11 and a support frame 12;

[0034] The support frame 12 is mounted on the base plate 11, part of the electric circular saw is located on the support frame 12, the fixing component 2 is located on the support frame 12, and the first detection frame 3 and the second detection frame 4 are both mounted on the base plate 11.

[0035] By mounting the electric circular saw on the support frame 12, the lower guard of the electric circular saw is not disturbed during the closing process, ensuring the accuracy of the test results.

[0036] The fixing component 2 includes: a first fixing member and a second fixing member;

[0037] The first and second fixing members are respectively located on both sides of the electric circular saw and are used to fix the electric circular saw on the support frame 12.

[0038] The first fixing component includes: a first rotating shaft 21, a first fixing plate 22, and a fixing pad 23;

[0039] The first rotating shaft 21 is mounted on the support frame 12. The first fixing plate 22 has a strip hole. The first rotating shaft 21 passes through the strip hole on the first fixing plate 22. The first fixing plate 22 can rotate on the first rotating shaft 21. The bottom of both ends of the first fixing plate 22 is provided with fixing pads 23. There is a gap between the fixing pads 23 and the support frame 12.

[0040] The first fixing component also includes: a positioning bolt 24 and a fixing spring;

[0041] The first fixed plate 22 has a positioning bolt 24 at its first end. A spring groove is provided on the fixing pad 23 at the first end of the first fixed plate 22. One end of the positioning bolt 24 passes through the first fixed plate 22 and extends into the spring groove. The fixing spring is located in the spring groove and is sleeved on the positioning bolt 24. The fixing spring is in a compressed state.

[0042] The second end of the first fixing plate 22 is rotated onto the housing of the electric circular saw. The elastic force generated by the compression of the fixing spring causes the fixing pad 23 at the second end of the first fixing plate 22 to press against the housing of the electric circular saw, thereby fixing the electric circular saw and preventing it from moving during the inspection of the lower guard, which would affect the inspection results.

[0043] The second fixing member includes: a second rotating shaft 25 and a second fixing plate 26;

[0044] The second rotating shaft 25 is mounted on the support frame 12. The second fixing plate 26 has a strip hole. The second rotating shaft 25 passes through the strip hole on the second fixing plate 26, and the second fixing plate 26 can rotate on the second rotating shaft 25.

[0045] The second fixing plate 26 can be fixed to the housing of the electric circular saw by rotating it. The position of the second rotating shaft 25 in the slot can be adjusted through the slot, so that the second fixing plate 26 can fix electric circular saws of different sizes.

[0046] The first detection frame 3 and the second detection frame 4 both include: a switch base 31, a horizontal rod 32, a vertical rod 33, a longitudinal rod 34, and a connecting sleeve 35;

[0047] The switch base 31 is mounted on the base plate 11. The switch base 31 is used to open or close the first detector or the second detector. The horizontal rod 32 is located on one side of the switch base 31. One end of the vertical rod 33 is slidably connected to the horizontal rod 32. The longitudinal rod 34 is slidably mounted on the vertical rod 33. One end of the longitudinal rod 34 is fitted with a connecting sleeve 35. The first detector or the second detector is fixed on the connecting sleeve 35.

[0048] In this embodiment, the first detector or the second detector can be turned on or off by the switch base 31. The horizontal rod 32, the vertical rod 33 and the longitudinal rod 34 can be used to adjust the horizontal, vertical and height of the first detector and the second detector, so that the first detector or the second detector can detect electric circular saws of different sizes. The first detector or the second detector is connected by the connecting sleeve 35, which makes it easy to remove the first detector or the second detector from the longitudinal rod 34.

[0049] Above, refer to Figures 1-4 This invention describes a detection device for an electric circular saw according to an embodiment of the present invention. The electric circular saw to be detected is fixed on the frame assembly 1 by a fixing component 2. During the closing process, the lower guard of the electric circular saw will pass through the detection positions of the first detector and the second detector in sequence. By calculating the time difference between the lower guard passing through the first detector and the second detector, the closing time of the lower guard can be calculated. The detection device has a simple structure and low cost, thereby reducing the production cost of the electric circular saw.

[0050] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0051] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A detection device for an electric circular saw, characterized in that, include: Frame components, fixing components, and testing components; The electric circular saw is mounted on the frame assembly, the fixing assembly is used to fix the electric circular saw on the frame assembly, and the detection assembly is used to detect the closing time of the lower guard of the electric circular saw. The detection assembly includes: a first detection frame, a first detector, a second detection frame, and a second detector; The first and second detection frames are both mounted on the frame assembly. The first detection frame corresponds to the initial end of the closing process of the lower guard of the electric circular saw, and the second detection frame corresponds to the end of the closing process of the lower guard of the electric circular saw. The first detector is mounted on the first detection frame, with its detection end facing the initial end of the closing process of the lower guard of the electric circular saw. The second detector is mounted on the second detection frame, with its detection end facing the end of the closing process of the lower guard of the electric circular saw.

2. The detection device for an electric circular saw as described in claim 1, characterized in that, The frame assembly includes: a base plate and a support frame; The support frame is mounted on the base plate, part of the electric circular saw is located on the support frame, the fixing component is located on the support frame, and both the first and second detection frames are mounted on the base plate.

3. The detection device for an electric circular saw as described in claim 2, characterized in that, The fixing component includes: a first fixing member and a second fixing member; The first and second fixing members are respectively located on both sides of the electric circular saw and are used to fix the electric circular saw on the support frame.

4. The detection device for an electric circular saw as described in claim 3, characterized in that, The first fixing component includes: a first rotating shaft, a first fixing plate, and a fixing pad; The first rotating shaft is mounted on the support frame. A strip hole is provided on the first fixed plate. The first rotating shaft passes through the strip hole on the first fixed plate. The first fixed plate can rotate on the first rotating shaft. Fixed pads are provided at the bottom of both ends of the first fixed plate. There is a gap between the fixed pads and the support frame.

5. The detection device for an electric circular saw as described in claim 4, characterized in that, The first fixing component further includes: a positioning bolt and a fixing spring; The first fixed plate has a positioning bolt at its first end, and a spring groove is provided on the fixing pad at the first end of the first fixed plate. One end of the positioning bolt passes through the first fixed plate and extends into the spring groove. The fixing spring is located in the spring groove and is sleeved on the positioning bolt. The fixing spring is in a compressed state.

6. The detection device for an electric circular saw as described in claim 3, characterized in that, The second fixing component includes: a second rotating shaft and a second fixing plate; The second rotating shaft is mounted on the support frame, and a strip hole is provided on the second fixed plate. The second rotating shaft passes through the strip hole on the second fixed plate, and the second fixed plate can rotate on the second rotating shaft.

7. The detection device for an electric circular saw as described in claim 2, characterized in that, Both the first and second testing frames include: a switch base, a horizontal rod, a vertical rod, a longitudinal rod, and a connecting sleeve; The switch base is mounted on the base plate and is used to turn the first detector or the second detector on or off. The horizontal rod is located on one side of the switch base. One end of the vertical rod is slidably connected to the horizontal rod. The longitudinal rod is slidably mounted on the vertical rod. One end of the longitudinal rod is fitted with a connecting sleeve, and the first detector or the second detector is fixed on the connecting sleeve.

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