Laser range finder with tail plate
By designing a laser rangefinder with tail plate, the rotatable tail plate is used to closely adhere to the wall angle or other measurement starting point, the problem of inaccurate positioning of the laser rangefinder when measuring in special positions is solved, and the measurement accuracy and application range are improved.
Patent Information
- Application Number
- CN202421496301.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-06-27
AI Technical Summary
When measuring special positions such as wall angles, existing laser rangefinders are difficult to stick to the wall angle, resulting in inaccurate positioning of the measurement starting point, and need to estimate the offset value or use indirect measurement methods, resulting in large errors in the measurement results, low accuracy and complex operation.
A laser rangefinder with tail plate is designed. The tail plate is rotatably mounted on the tail portion of the laser rangefinder through a mounting seat and a fixed shaft. The end of the tail plate is far away from the fixed shaft and can hit the starting point of the object to be measured. The precise measurement of the wall angle or other measurement starting point is achieved by lengthening the length of the tail plate.
It effectively solves the problem of inaccurate positioning of the starting point of the laser rangefinder when measuring in special locations such as wall corners, improves the measurement accuracy and scope of application, simplifies the operation process, and improves work efficiency.
Smart Images
Figure CN222896260U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of distance measuring equipment, in particular to a laser distance meter with a tail plate. Background Art
[0002] In the traditional interior decoration, architectural design and construction industries, laser rangefinders, as an efficient measuring tool, have become one of the indispensable equipment. They are mainly used to measure indoor areas, distances, etc. During the measurement process, since the laser rangefinder has a cubic structure and a certain thickness, when the corner of the wall is required as the starting point for measurement, the rear end of the rangefinder cannot fit into the corner of the wall, resulting in measurement errors.
[0003] However, most existing laser rangefinders are mainly designed to improve measurement accuracy and distance range, but lack effective countermeasures for special measurement needs, such as the precise positioning of the starting point of a corner. Especially when facing complex measurement scenarios such as the edge or corner of a wall, laser rangefinders are often difficult to measure accurately close to the corner due to their own size limitations, which directly leads to difficulties in selecting the measurement starting point and deviations in measurement results.
[0004] When measuring a corner as a starting point, it is usually necessary to estimate an offset value to compensate for the error caused by the laser rangefinder not being able to get close to the corner, or to use an indirect measurement method, first measuring the length of the two walls and then calculating the distance from the corner to a specific point through geometric calculation. This method will lead to large errors in the measurement results, thereby reducing the accuracy of the measurement. In addition, the workload is large and the operation is complicated when performing the measurement. Utility Model Content
[0005] 1. Technical issues to be resolved
[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a laser rangefinder with a tail plate, which solves the technical problems that when measuring special positions such as wall corners, the existing laser rangefinder needs to estimate an offset value to compensate for the error caused by the laser rangefinder being unable to fit closely to the wall corner, or adopts an indirect measurement method, which will cause a large error in the measurement result, thereby reducing the measurement accuracy, and the workload is large and the operation is complicated when performing the measurement.
[0007] (II) Technical solution
[0008] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:
[0009] The utility model provides a laser rangefinder with a tail plate, comprising a laser rangefinder body, a mounting seat and a fixed shaft; a mounting portion is provided at the tail of the laser rangefinder body and the mounting portion penetrates through the bottom wall of the tail of the laser rangefinder body; the mounting seat is mounted on the mounting portion and the tail plate is rotatably mounted on the tail of the mounting seat through the fixed shaft, and one end of the tail plate away from the fixed shaft can abut against the starting point of an object to be measured.
[0010] Preferably, the tail plate includes a plate body and two rotating parts; the two rotating parts are respectively connected to the tail of the plate body and the two rotating parts are symmetrically arranged about the central axis of the length direction of the plate body; the tail of the mounting seat is provided with a first groove corresponding to the two rotating parts, the fixed shafts are provided with two and the two fixed shafts are respectively fixedly installed in the two first grooves, the two rotating parts are respectively placed in the two first grooves and sleeved on the outer walls of the two fixed shafts.
[0011] Preferably, the rotating portion is L-shaped, one free end of the rotating portion is connected to the tail portion of the tail plate, and the other free end is located in the first groove, and the inner corner of the L-shape faces the first groove.
[0012] Preferably, one end of the rotating portion located in the first groove is arc-shaped.
[0013] Preferably, a protrusion is provided in each of the two first grooves and the two protrusions are respectively located on the inner wall on the same side of the two first grooves; four cross-shaped slots matching the two protrusions are provided on the side walls on the same side of the two rotating parts, and the four slots are circumferentially distributed around the axis of the fixed shaft; the protrusion can be inserted into or disengaged from the corresponding slot, so that the rotating part can be fixed at multiple angles with the four slots through the protrusion.
[0014] Preferably, the side walls on both sides of the long side of each of the slots are provided with inclined surfaces, and the two inclined surfaces are arranged in opposite directions.
[0015] Preferably, the laser rangefinder further comprises two elastic members; elastic member receiving grooves are provided on the side walls of the two rotating parts away from the multiple slots; the two elastic members are respectively located in the two elastic member receiving grooves to respectively provide rebound force to the two rotating parts.
[0016] Preferably, one end of the fixed shaft is provided with anti-slip grooves.
[0017] Preferably, the laser rangefinder further includes a magnet, a circuit board and a Hall element; the circuit board is installed inside the laser rangefinder body and one end of the circuit board extends to the mounting portion, and the Hall element is installed on the circuit board; the magnet is installed on the tail plate, and when the tail plate is in an initial position, the magnet is located above the Hall element, and the magnet can approach or move away from the Hall element as the tail plate rotates, so that the Hall element detects the change in magnetic force of the magnet acting on the Hall element.
[0018] Preferably, a magnet receiving groove is provided on a side wall of one of the rotating parts located above the Hall element, the magnet receiving groove is located above one of the fixed shafts, and the magnet is placed in the magnet receiving groove; the magnet receiving groove passes through one of the rotating parts, and the aperture of the magnet receiving groove on the side facing the other rotating part is smaller than the aperture on the side away from the other rotating part.
[0019] (III) Beneficial effects
[0020] The beneficial effects of the utility model are:
[0021] 1. The utility model is a laser rangefinder with a tail plate. By setting a mounting seat and a tail plate, and the tail plate and the mounting seat are rotatably connected through a fixed shaft, the tail plate can be flexibly rotated and closely fit the corner or other measurement starting point. When measuring, the distance measured by the laser rangefinder plus the length of the tail plate can realize the distance or length between the corner or other measurement starting point and the other end point of the object, which effectively solves the problem of inaccurate positioning of the measurement starting point caused by the thickness of the fuselage of the existing laser rangefinder, and greatly improves the measurement accuracy and application range of the laser rangefinder in complex environments. Moreover, it is only necessary to rotate the tail plate so that the end of the tail plate away from the fixed axis can be against the starting point of the measured object to achieve the measurement requirements at special positions. There is no need to use additional tools or perform complex settings, which simplifies the operation process, improves work efficiency, and makes the measurement work smoother and faster. The utility model has a simple structure and simple operation. By setting a tail plate and a mounting seat, it can realize the measurement of special positions, thereby improving the measurement accuracy and work efficiency.
[0022] 2. The utility model provides a laser rangefinder with a tail plate, by providing a plate body and two rotating parts, and the two rotating parts are mirror-symmetrically connected to the tail of the plate body, the two rotating parts are located in the first groove and sleeved on two fixed shafts, which ensures the structural stability of the tail plate in the rotating and fixed state, reduces the displacement caused by vibration or external force, improves the overall durability and long-term reliability, and also makes the laser rangefinder more compact as a whole, improving the integration and portability of the equipment.
[0023] 3. The utility model provides a laser rangefinder with a tail plate. By setting the rotating part to an L shape, the cooperation between the rotating part and the fixed shaft in the first groove can be made more stable. The inner angle of the L shape faces the first groove, which can better disperse the force and increase the torsional strength. Even when subjected to large external forces or frequent rotation operations, the structure can be kept stable, avoiding deformation or damage, and improving the overall durability and service life. By setting one end of the rotating part located in the first groove to an arc shape, it can avoid interference between the rotating part and the first groove, thereby preventing the tail plate from being unable to rotate in the first groove, and further achieving the structural stability of the tail plate.
[0024] 4. The utility model provides a laser rangefinder with a tail plate. By providing four cross-shaped slots and protrusions that are engaged with the slots, the tail plate can be fixed in a position parallel to or perpendicular to the laser rangefinder body, thereby meeting the measurement requirements during home improvement or construction measurement and improving the flexibility and accuracy of the measurement. Moreover, by engaging the protrusions with the mechanical structure of the slots, the tail plate can be fixed at a selected angle with stability, and it is not easy to shift even in the event of slight external vibration or during operation, thereby ensuring the consistency and reliability of the measurement results. By providing inclined surfaces on both side walls of the long side of each slot, it is possible to facilitate the engagement or disengagement between the protrusions and the slots, and it is not easy to get stuck.
[0025] 5. The utility model is a laser rangefinder with a tail plate, which can provide a rebound force to the tail plate by arranging an elastic member in the elastic member receiving groove. When in use, the tail plate is pulled to rotate, and at this time, the boss is separated from the slot in the initial state due to the rotation of the tail plate. Since the slot is lower than the side wall of the rotating part, when the boss hits the side wall of the rotating part, the entire tail plate moves along the axial direction of the fixed axis in the direction away from the boss, causing the elastic member to compress. When the angle of the tail plate is determined, it is only necessary to engage the corresponding slot with the protrusion at this time, and the elastic member will automatically reset and apply pressure to the tail plate, so that the current slot is always engaged with the protrusion, thereby improving the stability of the engagement between the slot and the protrusion.
[0026] 6. The utility model provides a laser rangefinder with a tail plate. By providing anti-skid grooves at one end of the fixed shaft, the fixed shaft can be prevented from rotating, so that the fixed shaft can be more stable when fixedly installed in the first groove. By providing a circuit board, a Hall element and a magnet, it can automatically sense the opening or closing of the tail plate, that is, in the initial state, the magnetic force between the magnet and the Hall element does not change. When the tail plate is rotated, the magnet changes its position due to the rotation of the tail plate, so that the magnetic force of the magnet acting on the Hall element changes, thereby switching the laser rangefinder from the normal measurement mode to the tail plate measurement mode, and starting to use the pre-calibrated tail plate measurement mode, the tail plate is pressed against the object to be measured, and the end of the tail plate away from the fixed shaft is used as the starting point of the measurement, and the length of the tail plate is added when measuring the distance. By making the aperture of the magnet receiving groove facing the other rotating part smaller than the aperture of the side away from the other rotating part, it can stably place the magnet in the magnet receiving groove to prevent the magnet from falling. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a laser rangefinder with a tail plate of the utility model;
[0028] Figure 2 It is a schematic diagram of the overall three-dimensional structure of a tail plate of a laser rangefinder with a tail plate according to the utility model;
[0029] Figure 3 It is a schematic diagram of the overall three-dimensional structure of a plate body and a rotating part of a laser rangefinder with a tail plate of the utility model;
[0030] Figure 4 It is a schematic diagram of the overall three-dimensional structure of the plate body and the other side of the rotating part of a laser rangefinder with a tail plate of the utility model;
[0031] Figure 5 It is a schematic diagram of the overall three-dimensional structure of a laser rangefinder with a tail plate without a tail plate of the utility model;
[0032] Figure 6 The utility model is a schematic diagram of the overall three-dimensional structure of a laser rangefinder with a tail plate without a tail plate, a mounting seat and a fixed shaft.
[0033] [Description of Reference Numerals]
[0034] 1: laser rangefinder body; 2: tail plate; 21: plate body; 22: rotating part; 221: slot; 222: elastic member receiving slot; 223: magnet receiving slot; 3: mounting seat; 31: first groove; 32: bump; 4: fixed shaft; 5: elastic member; 6: magnet; 7: circuit board; 8: Hall element. DETAILED DESCRIPTION
[0035] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.
[0036] Embodiment 1
[0037] like Figure 1-6 As shown, a laser rangefinder with a tail plate in this embodiment includes a laser rangefinder body 1, a mounting seat 3 and a fixed shaft 4.
[0038] Specifically, the tail of the laser rangefinder body 1 is provided with a mounting portion, and the mounting portion penetrates the bottom wall of the tail of the laser rangefinder body 1. The mounting seat 3 is mounted on the mounting portion, and the tail plate 2 is rotatably mounted on the tail of the mounting seat 3 through a fixed shaft 4. The tail plate 2 can rotate around the axis of the fixed shaft 4, so that the end of the tail plate 2 away from the fixed shaft 4 can abut against the starting point of the object to be measured, so that the distance measured by the laser rangefinder body 1 plus the length of the tail plate 2 can be used to obtain the actual distance of the object. By providing the mounting seat 3 and the tail plate 2, and the tail plate 2 and the mounting seat 3 are rotatably connected through the fixed shaft 4, it can enable the tail plate 2 to be flexibly rotated and closely fit the corner or other measurement starting point. When measuring, the distance measured by the laser rangefinder plus the length of the tail plate 2 can realize the distance or length between the corner or other measurement starting point and the other end point of the object, which effectively solves the problem of inaccurate positioning of the measurement starting point caused by the thickness of the fuselage of the existing laser rangefinder, and greatly improves the measurement accuracy and application range of the laser rangefinder in complex environments. Moreover, it is only necessary to rotate the tail plate 2 so that the end of the tail plate 2 away from the fixed axis 4 touches the starting point of the object to be measured to achieve the measurement requirements at a special position without the aid of additional tools or complicated settings, which simplifies the operation process, improves work efficiency, and makes the measurement work smoother and faster.
[0039] Further, the tail plate 2 includes a plate body 21 and two rotating parts 22. The two rotating parts 22 are respectively connected to the tail of the plate body 21 and the two rotating parts 22 are symmetrically arranged with the central axis of the length direction of the plate body 21. The tail of the mounting seat 3 is provided with a first groove 31 corresponding to the two rotating parts 22, and two fixed shafts 4 are provided and the two fixed shafts 4 are respectively fixedly installed in the two first grooves 31. The two rotating parts 22 are respectively placed in the two first grooves 31 and sleeved on the outer walls of the two fixed shafts 4, which ensures the structural stability of the tail plate 2 in the rotating and fixed state, reduces the displacement caused by vibration or external force, improves the overall durability and long-term reliability, and also makes the laser rangefinder more compact as a whole, improves the integration and portability of the equipment. The two rotating parts 22 can have a gap with the inner walls of the two first grooves 31, so as to provide a space for the tail plate 2 to rotate and move. Preferably, one end of the fixed shaft 4 is provided with an anti-slip pattern, which can prevent the fixed shaft 4 from rotating, so that the fixed shaft 4 can be more stable when fixedly installed in the first groove 31.
[0040] Furthermore, the rotating part 22 is L-shaped, which can make the cooperation between the rotating part 22 and the fixed shaft 4 in the first groove 31 more stable. One free end of the rotating part 22 is connected to the tail of the tail plate 2, and the other free end is located in the first groove 31. The inner angle of the L-shape faces the first groove 31, which can better disperse the force and increase the torsional strength. Even when subjected to large external forces or frequent rotation operations, the structure can be kept stable, avoiding deformation or damage, and improving the overall durability and service life. A section of the rotating part 22 located in the first groove 31 is sleeved on the outer wall of the fixed shaft 4. Preferably, one end of the rotating part 22 located in the first groove 31 is arc-shaped, which can avoid interference between the rotating part 22 and the first groove 31, thereby preventing the tail plate 2 from being unable to rotate in the first groove 31, and further achieving the structural stability of the tail plate 2.
[0041] Further, a protrusion 32 is provided in each of the two first grooves 31 and the two protrusions 32 are respectively located on the inner wall on the same side of the two first grooves 31. Four cross-shaped slots 221 matching the two protrusions 32 are provided on the side wall on the same side of the two rotating parts 22. The four slots 221 are circumferentially distributed around the axis of the fixed shaft 4. The midlines of every two opposite slots 221 are located on the same straight line. The extension lines of the two opposite slots 221 are parallel to the extension line of the plate body 21, and the extension lines of the other two opposite slots 221 are perpendicular to the extension line of the plate body 21. The protrusion 32 can be inserted into or out of the corresponding slot 221, so that the rotating part 22 can be fixed to the four slots 221 at multiple angles through the protrusion 32. By setting four cross-shaped slots 221 and the protrusions 32 that are engaged with the slots 221, the tail plate 2 can be fixed at a position parallel to the laser rangefinder body 1 or perpendicular to the laser rangefinder body 1, thereby meeting the measurement requirements during home decoration or construction measurement, and improving the flexibility and accuracy of measurement. Moreover, by engaging the protrusions 32 with the mechanical structure of the slots 221, the tail plate 2 can be fixed at a selected angle stably, and it is not easy to be displaced even in the event of slight external vibration or operation, thereby ensuring the consistency and reliability of the measurement results. Preferably, the side walls on both sides of the long side of each slot 221 are provided with inclined surfaces, and the directions of the two inclined surfaces are arranged oppositely, which can facilitate the engagement or disengagement between the protrusions 32 and the slots 221, and it is not easy to get stuck.
[0042] Furthermore, the laser rangefinder also includes two elastic members 5 .
[0043] Specifically, an elastic member receiving groove 222 is provided on the side wall of the two rotating parts 22 away from the plurality of slots 221. The two elastic member receiving grooves 222 are coaxially arranged with the fixed shaft 4, and the openings of the two elastic member receiving grooves 222 face the direction away from the two protrusions 32. The two elastic members 5 are respectively located in the two elastic member receiving grooves 222 and are respectively sleeved on the outer walls of the two fixed shafts 4 to provide resilience to the tail plate 2. When in use, the tail plate 2 is pulled to rotate the tail plate 2. At this time, the boss is disengaged from the slot 221 in the initial state due to the rotation of the tail plate 2. Since the slot 221 is lower than the side wall of the rotating part 22, when the boss abuts the side wall of the rotating part 22, the entire tail plate 2 moves along the axial direction of the fixed shaft 4 in the direction away from the boss, causing the elastic member 5 to compress. When the angle of the tail plate 2 is determined, it is only necessary to engage the corresponding slot 221 with the protrusion 32 at this time, and the elastic member 5 is automatically reset and applies pressure to the tail plate 2, so that the current slot 221 is always engaged with the protrusion 32, thereby improving the stability of the engagement between the slot 221 and the protrusion 32.
[0044] Preferably, the laser rangefinder further comprises a magnet 6, a circuit board 7 and a Hall element 8. The circuit board 7 is installed inside the laser rangefinder body 1 and one end of the circuit board 7 extends to the mounting portion, and the Hall element 8 is installed on the circuit board 7. The magnet 6 is installed on the tail plate 2, and when the tail plate 2 is in the initial position, the magnet 6 is located above the Hall element 8, and the magnet 6 can approach or move away from the Hall element 8 as the tail plate 2 rotates, so that the Hall element 8 detects the change in the magnetic force of the magnet 6 acting on the Hall element 8, which can automatically sense the opening or closing of the tail plate 2, that is, in the initial state, the magnetic force of the magnet 6 acting on the Hall element 8 does not change. When the tail plate 2 is rotated, the magnet 6 changes its position due to the rotation of the tail plate 2, so that the magnetic force of the magnet 6 acting on the Hall element 8 changes, so that the laser rangefinder can switch from the ordinary measurement mode to the tail plate measurement mode, use the tail plate 2 to push against the object to be measured, and take the end of the tail plate 2 away from the fixed shaft end as the measurement starting point, and measure the distance, and add the length of the tail plate 2 when measuring the distance.
[0045] Furthermore, a magnet receiving groove 223 is provided on a side wall of a rotating part 22 located above the Hall element 8, and the magnet receiving groove 223 is located above a fixed shaft 4, and the magnet 6 is placed in the magnet receiving groove 223. The magnet receiving groove 223 penetrates one rotating part 22, and the aperture of the magnet receiving groove 223 on the side facing the other rotating part 22 is smaller than the aperture on the side away from the other rotating part 22, which can stably place the magnet 6 in the magnet receiving groove 223 to prevent the magnet 6 from falling.
[0046] Furthermore, a second groove is provided at the bottom of the end of the plate body 21 away from the rotating portion 22, and the second groove penetrates the side wall of the end of the plate body 21 away from the rotating portion 22, which enables the user to more conveniently pull the tail board 2 in the initial state. The user only needs to put his hand in the second groove and pull the tail board 2 to rotate the tail board 2 around the axis of the fixed shaft 4.
[0047] Through the above structure, the working principle of a laser rangefinder with a tail plate in this embodiment is:
[0048] As shown in the figure, the laser rangefinder is first assembled. In the initial state, the protrusion 32 is engaged with one of the slots 221. When it is necessary to measure a special position such as a corner, the second groove is manually pulled to rotate the tail plate 2 around the axis of the fixed shaft 4 through the rotating part 22. At the same time, the protrusion 32 is separated from the slot 221 through the inclined surface of the slot 221. When the protrusion 32 is separated from the slot 221, due to the action of force, the protrusion 32 presses against the tail plate 2 and causes the tail plate 2 to move along the axis of the fixed shaft 4 in a direction away from the protrusion 32. The elastic member 5 is compressed due to the movement of the tail plate 2. At this time, the magnet 6 is away from the Hall element 8, and the Hall element 8 senses the change in the magnetic force of the magnet 6 acting on it, and then switches the laser rangefinder from the normal measurement mode to the tail plate measurement mode.
[0049] After switching to the tailgate measurement mode, continue to pull the tailgate 2 to rotate. Then, when the tailgate 2 is pulled and rotated to the required angle, the slot 221 corresponding to the protrusion 32 is aligned with the protrusion 32, and the tailgate 2 is rebounded by the resilience of the elastic member 5, and the corresponding slot 221 is engaged with the protrusion 32, and the elastic member 5 continues to provide pressure on the tailgate 2, so that the slot 221 and the protrusion 32 are always locked. In this way, the angle change of the tailgate 2 is completed.
[0050] Then, the end of the tail plate 2 away from the fixed axis 4 is placed against the starting point of the object to be measured, and measurement is started. During measurement, the distance measured by the laser rangefinder body 1 plus the length of the tail plate 2 itself is added to obtain the distance or length from the starting point to the end point of the object to be measured through the preset program of the circuit board 7.
[0051] When the measurement is completed, the tail plate 2 is rotated again and returned to the initial position. At this time, the protrusion 32 is disengaged from the current slot 221 through the inclined surface of the current slot 221. When the protrusion 32 is disengaged from the slot 221, due to the action of force, the protrusion 32 presses against the tail plate 2 and causes the tail plate 2 to move along the axis of the fixed shaft 4 in the direction away from the protrusion 32. The elastic member 5 is compressed due to the movement of the tail plate 2. When the slot 221 at the initial position is aligned with the protrusion 32, the tail plate 2 is released. Due to the rebound force of the elastic member 5, the tail plate 2 rebounds to the initial position, so that the slot 221 at the initial position is engaged with the protrusion 32. At this time, the magnet 6 is close to the Hall element 8, and the Hall element 8 senses the change in the magnetic force of the magnet 6, and then switches the laser rangefinder to the normal measurement mode.
[0052] It should be noted that this embodiment does not involve any improvement or use of any computer program, and only provides the connection relationship between the Hall element 8 and the circuit board 7. The improvement of the utility model does not involve the content of control, and the existing control process is the existing content.
[0053] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0054] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0055] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.
[0056] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.
[0057] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A laser rangefinder with a tail plate, comprising a laser rangefinder body (1), characterized in that: It also includes a mounting seat (3) and a fixed shaft (4); The tail of the laser rangefinder body (1) is provided with a mounting portion, and the mounting portion passes through the bottom wall of the tail of the laser rangefinder body (1); The mounting seat (3) is mounted on the mounting portion and the tail plate (2) is rotatably mounted on the tail of the mounting seat (3) via the fixed shaft (4); an end of the tail plate (2) away from the fixed shaft (4) can abut against the starting point of an object to be measured.
2. A laser rangefinder with a tail plate as claimed in claim 1, characterized in that: The tail plate (2) comprises a plate body (21) and two rotating parts (22); The two rotating parts (22) are respectively connected to the tail of the plate body (21) and the two rotating parts (22) are symmetrically arranged about the central axis in the length direction of the plate body (21); The rear portion of the mounting seat (3) is provided with a first groove (31) corresponding to the two rotating parts (22); two fixed shafts (4) are provided and the two fixed shafts (4) are respectively fixedly mounted in the two first grooves (31); the two rotating parts (22) are respectively placed in the two first grooves (31) and sleeved on the outer walls of the two fixed shafts (4).
3. A laser rangefinder with a tail plate as claimed in claim 2, characterized in that: The rotating part (22) is L-shaped, one free end of the rotating part (22) is connected to the tail of the tail plate (2), and the other free end is located in the first groove (31), with the inner corner of the L-shape facing the first groove (31).
4. A laser rangefinder with a tail plate as claimed in claim 3, characterized in that: One end of the rotating portion (22) located in the first groove (31) is arc-shaped.
5. A laser rangefinder with a tail plate as claimed in claim 2, characterized in that: A bulge (32) is provided in each of the two first grooves (31), and the two bulges (32) are respectively located on the inner wall of the same side of the two first grooves (31); The side walls on the same side of the two rotating parts (22) are provided with four cross-shaped slots (221) that match the two protrusions (32), and the four slots (221) are circumferentially distributed around the axis of the fixed shaft (4); The protrusion (32) can be inserted into or disengaged from the corresponding slot (221), so that the rotating part (22) can be fixed to the four slots (221) at multiple angles through the protrusion (32).
6. A laser rangefinder with a tail plate as claimed in claim 5, characterized in that: The side walls on both sides of the long side of each of the slots (221) are provided with inclined surfaces, and the directions of the two inclined surfaces are arranged opposite to each other.
7. A laser rangefinder with a tail plate as claimed in claim 6, characterized in that: The laser rangefinder also includes two elastic members (5); An elastic member receiving groove (222) is provided on the side walls of the two rotating parts (22) away from the plurality of clamping grooves (221); The two elastic members (5) are respectively located in the two elastic member receiving grooves (222) to respectively provide resilience forces to the two rotating parts (22).
8. A laser rangefinder with a tail plate as claimed in claim 1, characterized in that: One end of the fixed shaft (4) is provided with anti-slip grooves.
9. A laser rangefinder with a tail plate as claimed in claim 2, characterized in that: The laser rangefinder further comprises a magnet (6), a circuit board (7) and a Hall element (8); The circuit board (7) is installed inside the laser rangefinder body (1), and one end of the circuit board (7) extends to the installation portion, and the Hall element (8) is installed on the circuit board (7); The magnet (6) is mounted on the tail plate (2), and when the tail plate (2) is in an initial position, the magnet (6) is located above the Hall element (8). The magnet (6) can approach or move away from the Hall element (8) as the tail plate (2) rotates, so that the Hall element (8) detects changes in the magnetic force of the magnet (6) acting on the Hall element (8).
10. A laser rangefinder with a tail plate as claimed in claim 9, characterized in that: A magnet receiving groove (223) is provided on a side wall of one of the rotating parts (22) located above the Hall element (8), the magnet receiving groove (223) is located above one of the fixed shafts (4), and the magnet (6) is placed in the magnet receiving groove (223); The magnet receiving groove (223) passes through one of the rotating parts (22), and the hole diameter of the magnet receiving groove (223) on the side facing the other rotating part (22) is smaller than the hole diameter on the side away from the other rotating part (22).