Touch alarm mechanism for rapid leveling of laser level meter and movement structure

Abstract

The utility model discloses a touch alarm mechanism and a movement structure for rapid leveling of a laser level meter, which comprise an elastic contact piece arranged in the center of the bottom end of a pendulum body, and the elastic contact piece vertically points to a conducting ring arranged below the pendulum body. The center of the conducting ring is provided with a hole, and the elastic contact piece passes through the hole and keeps a preset gap with the inner wall of the conducting ring. When the pendulum body deviates from the vertical center line due to external disturbance, the elastic contact piece is in contact with the inner wall of the central hole of the conducting ring, a circuit is closed, an alarm device in the laser level meter is triggered, and an alarm signal is sent out. The utility model aims to provide an alarm device which triggers an alarm signal through the contact of an elastic contact piece and a conducting ring, ensures that the detection of inclination or offset by a gradienter is more sensitive and timely, and introduces a magnetic damping assembly to effectively reduce redundant swing in the recovery process of a swing body, thereby further improving the stability of a system and improving the reliability of the system. The problems that in the prior art, a pendulum bob is low in leveling speed and prone to interference are solved.

Description

Technical Field

[0001] The utility model relates to the field of laser levels, in particular to a touch alarm mechanism and a movement structure for rapid leveling of laser levels. Background Art

[0002] Laser levels are precision measuring tools widely used in construction, renovation, and surveying. One of their core components is a pendulum. This pendulum typically operates in a freely suspended manner, similar to the principle of a pendulum. When the level is turned on, the pendulum automatically adjusts to a vertical position under the influence of gravity, ensuring that the laser beam remains horizontal. Existing technologies use high-precision bearings or suspension wires to enable the pendulum to swing freely and quickly reach a stable state.

[0003] However, the pendulum's swing can easily generate unwanted vibrations, affecting the level's rapid leveling and measurement accuracy. To address this, laser levels incorporate an internal leveling mechanism. When the pendulum deviates from the vertical centerline, it contacts the external column structure, short-circuiting the metal parts and triggering an alarm system, alerting the user that the device has deviated from its horizontal position. This design provides high sensitivity and enables rapid response to external disturbances.

[0004] In circuit design, the uprights and pendulum are connected by wires to power the laser diode mounted on the pendulum. To minimize the impact of the wires on the pendulum's sensitivity, highly flexible, small-diameter enameled wire is typically used. This ensures the pendulum's swing is not subject to excessive resistance, thus maintaining system accuracy.

[0005] While this leveling structure can react quickly to deviation detection to a certain extent, it still has certain limitations in terms of how quickly the pendulum can return to equilibrium and the overall system sensitivity. While the pendulum can trigger an alarm system after deviating from the centerline, its return to verticality is often delayed due to inertia or external disturbances. This can cause the level to malfunction for a period of time, reducing operational efficiency. Furthermore, the pendulum's sensitivity is easily disturbed by external environmental factors such as wind and vibration. These disturbances can cause the pendulum to swing repeatedly after deviation, hindering its rapid return to equilibrium and, in turn, affecting measurement accuracy. Utility Model Content

[0006] The purpose of the utility model is to provide a touch alarm mechanism and a movement structure for rapid leveling of a laser level, which can respond more quickly to the speed at which the pendulum returns to a balanced state and the sensitivity of the entire system.

[0007] In order to achieve the above-mentioned object, the present invention adopts the following scheme: a touch alarm mechanism for rapid leveling of a laser level, comprising:

[0008] A pendulum is installed in the laser level in a manner that allows it to swing back and forth and left and right. When the pendulum is in a vertical state, no alarm is triggered;

[0009] A conductive ring is provided below the pendulum and has a hole in the center thereof, and is electrically connected to a circuit board in the laser level;

[0010] An elastic contact piece made of a flexible conductive material, the elastic contact piece being vertically mounted at the center of the bottom of the pendulum body, with the bottom end of the elastic contact piece pointing toward the axis of the hole of the conductive ring and passing through the central hole of the conductive ring, with a preset gap maintained between the elastic contact piece and the inner wall of the central hole of the conductive ring;

[0011] When the pendulum deviates from the vertical center line, the elastic contact member contacts the inner wall of the central hole of the conductive ring to form a closed circuit, thereby triggering the alarm device in the laser level to send an alarm signal.

[0012] In this solution, when the pendulum deviates from the vertical centerline, an elastic contact element touches a conductive ring coaxial with the vertical centerline, completing the circuit and triggering an alarm signal. This provides a timely alarm when the laser level tilts or deflects, alerting the user that the device is deviating from the horizontal position, and offers high sensitivity. Furthermore, the elastic contact element, made of flexible conductive material, ensures stable contact during pendulum swing, guaranteeing the reliability of the alarm system.

[0013] As a further solution of the present invention, the elastic contact piece is a metal spring. When the metal spring swings with the pendulum and contacts the inner wall of the central hole of the conductive ring, the metal spring bends and deforms. When the metal spring returns to an upright state, it drives the pendulum back to a vertically centered position. The elastic contact piece detaches from the conductive ring to disconnect the circuit and stop the alarm device from sounding the alarm. The metal spring can not only form a closed circuit when it deviates from the center line, but also drive the pendulum back to a vertically centered position through its elastic deformation and restoring force. This design enables the pendulum to quickly return to its normal state after an alarm, reduces the pendulum's swing time, and improves the working efficiency of the laser level. In addition, the design of the metal spring can also reduce the instability caused by the repeated swinging of the pendulum, thereby improving the accuracy and stability of the system.

[0014] As a further aspect of the present invention, a magnetic damping assembly is provided on the conductive ring. When the pendulum moves, the magnetic damping assembly generates an induced current in the opposite direction of the movement of the elastic contact member, forming a magnetic field and providing a magnetic damping effect, thereby reducing the swing speed of the pendulum when it returns to a vertical state. By providing the magnetic damping assembly on the conductive ring, the magnetic damping assembly generates an induced current in the opposite direction of the movement of the elastic contact member during the pendulum's swing, forming a magnetic field and providing a magnetic damping effect. This design can effectively reduce excess swinging of the pendulum when it returns to a vertical state, reduce the swing speed, and further improve the system's rapid leveling capability. This is particularly important for the application of laser levels in dynamic environments, as it can enhance anti-interference capabilities and improve measurement accuracy and efficiency.

[0015] As a preferred embodiment of the present invention, the magnetic damping components are magnets mounted on the top surface of the conductive ring, corresponding to each swing direction of the pendulum. This ensures that the magnetic damping effect is effective in all swing directions of the pendulum, making the pendulum's recovery speed more uniform and improving the stability of the entire system. Furthermore, this layout better accommodates the pendulum's free swing, ensuring comprehensive coverage of the magnetic damping effect.

[0016] As a preferred embodiment of the present invention, the bottom end of the pendulum body is connected to a cylindrical mounting base. A mounting hole with an upwardly concave center is provided at the bottom of the mounting base. A spring seat is mounted within the mounting hole. The spring seat also has a central insertion hole for the top end of the elastic contact member. The design of the mounting base and spring seat enhances the structural stability of the pendulum body, ensuring that the elastic contact member can be accurately inserted into the insertion hole. This ensures that the pendulum body can swing freely while also ensuring more precise return to a centered state, further improving the operating efficiency and reliability of the leveling structure.

[0017] The present utility model also provides a movement structure of a laser level, including a hanger installed in the laser level housing, the top of the pendulum body is provided with a long axis and a short axis arranged in a horizontal cross relationship with each other, the top of the pendulum body is hinged to the two ends of the short axis, the two ends of the long axis are hinged to the hanger, a laser module is provided on the pendulum body, and the bottom end of the pendulum body has the touch alarm mechanism for rapid leveling of the laser level as described above.

[0018] As an optimal solution of the present invention, a conductive ring mounting groove is provided in the laser level housing below the pendulum body, the conductive ring is installed in the conductive ring mounting groove, an upward extending mounting column is provided in the laser level housing, and the bottom end of the hanger is installed on the top end of the mounting column.

[0019] As a further solution of the present invention, the hanger is in the shape of a horizontally placed rectangular frame, and bearings A are embedded in the two opposite frames of the hanger. The two ends of the long axis are respectively plugged into the corresponding inner rings of the bearings A. The top of the pendulum body is provided with upwardly extending ears at intervals, and the ears are provided with bearings B respectively. The two ends of the short axis are respectively plugged into the corresponding inner rings of the bearings B, and the long axis passes through the center of the short axis.

[0020] The horizontal cross-section of the major and minor axes ensures excellent stability in all swing directions. The use of bearings further reduces friction and enhances the pendulum's sensitivity, ensuring a rapid response to external disturbances. This design maintains the pendulum's freedom of movement in various states while enhancing the overall durability and precision of the system through precise connections.

[0021] As a further feature of this invention, a pendulum lock is installed at the bottom of the pendulum, activated by a switch on the laser level housing. This lock prevents the pendulum from swinging freely. The lock prevents the pendulum from swinging freely when measurements are not required. A torsion spring securely clamps the locking arm to the mounting base, ensuring the pendulum remains stable when not in operation, preventing false alarms or damage from external interference. This design is particularly suitable for portable laser levels, protecting the delicate internal structure during transportation and storage, and extending the life of the device.

[0022] As a preferred embodiment of the present invention, the pendulum lock comprises two locking arms, each of whose ends is fixed to the bottom of the laser level housing via an axis hinge. The ends of the two locking arms, distal from their respective hinge axes, respectively clamp the outer wall of the mounting base. A torsion spring is attached to the hinge axis of one locking arm to maintain its grip on the mounting base. The other locking arm is provided with a guide slot. The locking arm with the torsion spring is provided with a synchronization rod that inserts into the guide slot. Each locking arm is provided with a toggle block that engages a switch on the laser level housing. The toggle block is provided with an inclined surface that, when the switch on the laser level housing is moved, is compressed, thereby driving the locking arm to open along the hinge axis. The combination of the locking arms, torsion springs, and synchronization rod allows the pendulum lock to maintain stability while also enabling convenient interlocking with an external switch, ensuring quick release or locking of the pendulum when needed. The combination of the guide slot and synchronization rod allows the two locking arms to open and close synchronously. This overall design improves the system's operational convenience and reliability, making the laser level more flexible and durable in various usage scenarios.

[0023] In summary, the present invention offers the following advantages over the prior art: Through several design optimizations, the present invention significantly improves the overall performance of laser levels. First, the elastic contact element, made of flexible conductive material, contacts the conductive ring, triggering an alarm signal, ensuring more sensitive and timely detection of tilt or offset. The use of a metal spring not only triggers the alarm but also rapidly restores the pendulum to its vertical position through its restoring force, resolving the prior art issue of slow pendulum recovery and reduced operational efficiency. The introduction of a magnetic damping component effectively reduces excess pendulum swing during recovery, further improving system stability and measurement accuracy. The optimized magnet layout ensures uniform damping in all directions. The precision bearing design of the hanger structure reduces frictional resistance during pendulum swing, enhancing sensitivity and durability. Furthermore, a pendulum lock locks the pendulum when not in operation, preventing it from swinging freely and protecting the device structure. Overall, while maintaining high sensitivity and rapid leveling, the present invention enhances anti-interference capabilities and improves measurement accuracy. This addresses the prior art issues of slow pendulum leveling and susceptibility to interference, providing a more reliable and efficient measurement tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a cross-sectional structural view of the utility model installed in a laser level.

[0025] Figure 2 for Figure 1 Magnified view of point A in the middle.

[0026] Figure 3 This is one of the exploded views of the utility model installed in a laser level.

[0027] Figure 4 This is the second exploded view of the utility model installed in a laser level.

[0028] Figure 5 This is one of the three-dimensional structural views of the pendulum body, the conductive ring and the magnetic damping assembly in the utility model.

[0029] Figure 6 This is the second three-dimensional structural view of the pendulum body, conductive ring and magnetic damping assembly in the utility model.

[0030] Figure 7 This is a cross-sectional structural view of the pendulum body, conductive ring and magnetic damping assembly in the present invention.

[0031] Explanation of the accompanying reference numerals: 1. pendulum body; 2. elastic contact piece; 3. conductive ring; 4. magnetic damping assembly; 5. hanger; 6. major axis; 7. minor axis; 8. pendulum lock; 9. switch; 10. lifting ear; 11. fixing seat; 12. mounting hole; 13. spring seat; 14. embedding hole; 15. conductive ring mounting groove; 16. mounting column; 17. bearing B; 51. bearing A; 81. locking arm; 82. torsion spring; 83. guide groove; 84. synchronization rod; 85. toggle block; 86. inclined plane. DETAILED DESCRIPTION

[0032] The following detailed description provides various embodiments or examples for implementing the present invention. These are, of course, merely examples and are not intended to be limiting. Furthermore, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. Such repetition is for simplicity and clarity in describing the present invention and does not imply a specific relationship between the various embodiments and / or configurations discussed.

[0033] In addition, spatially related terms may be used, such as "below," "lower side," "from the inside out," "above," "upper side," and similar terms. These terms are used to facilitate the description of the relationship between one element or feature and another element or feature in the drawings. These spatially related terms include different orientations of the device in use or operation, as well as the orientations described in the drawings. The device may be turned to different orientations, rotated 90 degrees or other orientations, and the spatially related adjectives used therein may also be interpreted in the same way. Therefore, they cannot be understood as limiting the present invention. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: Figures 1 to 7 The illustrated quick-leveling touch alarm mechanism for a laser level includes a pendulum 1 mounted within the laser level so that it can swing back and forth and left and right. An elastic contact member 2 made of a flexible conductive material is mounted at the center of the bottom end of the pendulum 1, pointing vertically toward a conductive ring 3 mounted below the pendulum 1. The conductive ring 3 has a central hole and is electrically connected to the circuit board within the laser level. The elastic contact member 2 passes through the hole and maintains a preset gap between the elastic contact member 2 and the inner wall of the conductive ring 3. When the pendulum 1 deviates from its vertical centerline due to external disturbances, the elastic contact member 2 contacts the inner wall of the central hole of the conductive ring 3, completing the circuit and triggering the alarm device within the laser level, which emits an alarm signal to alert the user that the device has deviated from its horizontal position. When the pendulum is in a vertical position, the alarm device is not triggered.

[0035] Among them, in order to further improve the peace effect, such as Figure 1 and 2 as well as Figures 5 to 7 As shown, the elastic contact member 2 is, for example, a metal spring. Specifically, a cylindrical mounting base 11 is connected to the bottom end of the pendulum 1. A mounting hole 12 is located in the center of the bottom of the mounting base 11, which is upwardly concave. A spring seat 13 is mounted within the mounting hole 12. The spring seat 13 has a central insertion hole 14 for accommodating the top end of the metal spring. The bottom end of the metal spring extends downward into the central hole of the conductive ring 3. Within the laser level housing below the pendulum 1, a conductive ring mounting groove 15 is provided, coaxial with the vertical centerline of the pendulum 1. The conductive ring 3 is mounted within this groove 15. When the pendulum 1 swings, the metal spring contacts the conductive ring 3 and bends. When the external force disappears, the restoring force of the metal spring quickly returns the pendulum 1 to its vertical center position, disengaging the elastic contact member 2 from the conductive ring 3, disconnecting the circuit and deactivating the alarm. This design ensures that the pendulum 1 quickly returns to equilibrium, reducing swing time.

[0036] In addition, if Figures 1 to 7 As shown, to reduce excess vibration during the recovery process of pendulum 1, a magnetic damping assembly 4 is mounted on the top surface of conductive ring 3. When pendulum 1 moves, magnetic damping assembly 4 generates an induced current, forming a magnetic field that provides a magnetic damping effect, thereby slowing the swing speed of pendulum 1 and, in other words, accelerating its return to center. In this embodiment, magnetic damping assembly 4 uses magnets corresponding to the forward, backward, leftward, and rightward swing directions of pendulum 1, ensuring uniform damping of pendulum 1 in all directions, improving stability.

[0037] The present invention also provides a laser level movement structure equipped with the aforementioned quick leveling touch alarm mechanism. The structure comprises a hanger 5, mounted within the laser level housing via multiple mounting posts 16 extending upward from the housing. The top of a pendulum 1 is hingedly connected to the hanger 5 via a horizontally intersecting major and minor axes 6 and 7, effectively suspending the pendulum 1 from the hanger 5. A laser module oriented in multiple directions is mounted on the pendulum 1. The hanger 5 is a horizontally positioned rectangular frame. Bearings A51 are embedded in the two opposing sides of the hanger 5. The ends of the major axis 6 engage with the inner races of the corresponding bearings A51. Lifting ears 10 extend upward at intervals from the top of the pendulum 1. Each lug 10 is equipped with a bearing B17. The ends of the minor axis 7 engage with the inner races of the corresponding bearings B17. The major axis 6 passes through the center of the minor axis 7. These bearings reduce friction, enhancing the sensitivity and durability of the pendulum 1.

[0038] To prevent the pendulum from swinging freely when not in operation, a pendulum lock 8 is installed inside the laser level housing. This pendulum lock 8 clamps the fixed seat 11 via two locking arms 81 hinged to the bottom of the laser level housing. Its opening and closing is controlled by a switch 9 on the laser level housing to ensure that the device is not disturbed by external factors during transportation and storage. Specifically, the hinge axes of the two locking arms 81 are respectively rotatably fixed to the bottom of the laser level housing. The ends of the two locking arms 81 closest to their respective hinge axes are stacked up and down, and the ends of the two locking arms 81 away from their respective hinge axes respectively clamp the outer wall of the fixed seat 11. A torsion spring 82 is provided on the hinge axis of one of the locking arms 81 to keep the locking arm 81 clamped to the fixed seat 11. One locking arm 81 is provided with a guide slot 83, while the other locking arm 81 is provided with a synchronization rod 84 that fits into the guide slot 83. Each locking arm 81 is equipped with a toggle block 85 that engages with the switch 9 on the laser level housing. This toggle block 85 has an inclined surface 86 that, when the switch 9 is moved, is compressed, driving the locking arm 81 to open along the hinge axis. When the switch 9 is moved, the side of the switch 9 that extends into the housing contacts and compresses the inclined surface 86 on the toggle block 85, causing the locking arm 81 with the toggle block 85 to tilt outward. As this arm 81 tilts, the locking arm 81 with the guide slot 83 is also simultaneously tilted outward by the synchronization rod 84. This releases the pendulum 1, allowing it to swing forward, backward, left, and right along its major axis 6 and minor axis 7, maintaining its vertical position.

[0039] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrative purposes. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A touch alarm mechanism for rapid leveling of a laser level, characterized in that: Includes: A pendulum (1), the pendulum (1) being mounted in the laser level in a manner capable of swinging back and forth and left and right, and not triggering an alarm when the pendulum (1) is in a vertical state; A conductive ring (3), the conductive ring (3) being arranged below the pendulum body (1) and having a hole in the center thereof, the conductive ring (3) being electrically connected to a circuit board in the laser level; An elastic contact piece (2) made of a flexible conductive material, the elastic contact piece (2) being vertically mounted at the bottom center of the pendulum body (1), with the bottom end of the elastic contact piece (2) pointing to the axial center of the hole of the conductive ring (3) and passing through the central hole of the conductive ring (3), and a preset gap being maintained between the elastic contact piece (2) and the inner wall of the central hole of the conductive ring (3); When the pendulum (1) deviates from the vertical center line, the elastic contact member (2) contacts the inner wall of the central hole of the conductive ring (3), forming a closed circuit, thereby triggering the alarm device in the laser level to send an alarm signal.

2. The touch alarm mechanism for rapid leveling of a laser level according to claim 1, characterized in that: The elastic contact member (2) is a metal spring. When the metal spring swings with the pendulum (1) and contacts the inner wall of the central hole of the conductive ring (3), the metal spring bends and deforms. When the metal spring returns to an upright state, it drives the pendulum (1) back to a vertical center position, and the elastic contact member (2) separates from the conductive ring (3), disconnecting the circuit and stopping the alarm device from sounding an alarm.

3. The touch alarm mechanism for rapid leveling of a laser level according to claim 2, characterized in that: A magnetic damping component (4) is provided on the conductive ring (3). When the pendulum (1) moves, the magnetic damping component (4) generates an induced current in a direction opposite to the movement direction of the elastic contact member (2), thereby forming a magnetic field and providing a magnetic damping effect, thereby reducing the swing speed of the pendulum (1) when it returns to a vertical state.

4. The touch alarm mechanism for rapid leveling of a laser level according to claim 3, characterized in that: The magnetic damping components (4) are magnets respectively arranged on the top surface of the conductive ring (3) and corresponding to the respective swinging directions of the pendulum (1).

5. The touch alarm mechanism for rapid leveling of a laser level according to claim 2, characterized in that: The bottom end of the pendulum body (1) is connected to a columnar fixing seat (11), and an upwardly concave mounting hole (12) is provided in the center of the bottom of the fixing seat (11). A spring seat (13) is installed in the mounting hole (12), and the center of the spring seat (13) has an embedding hole (14) capable of accommodating the top end of the elastic contact member (2) to be inserted.

6. A core structure for a laser level, comprising a hanger (5) mounted in a housing of the laser level, characterized in that: The top of the pendulum (1) is provided with a long axis (6) and a short axis (7) arranged in a horizontal cross relationship with each other, the top of the pendulum (1) is hinged to both ends of the short axis (7), and both ends of the long axis (6) are hinged to the hanger (5), a laser module is provided on the pendulum (1), and the bottom of the pendulum (1) has a touch alarm mechanism for rapid leveling of a laser level as claimed in any one of claims 1 to 5.

7. The core structure for a laser level according to claim 6, characterized in that: A conductive ring mounting groove (15) is provided in the laser level housing below the pendulum body (1), the conductive ring (3) is mounted in the conductive ring mounting groove (15), an upwardly extending mounting column (16) is provided in the laser level housing, and the bottom end of the hanger (5) is mounted on the top end of the mounting column (16).

8. The core structure for a laser level according to claim 6, characterized in that: The hanger (5) is in the shape of a horizontally placed rectangular frame, and bearings A (51) are embedded on the two opposite frames of the hanger (5). The two ends of the long shaft (6) are respectively plugged into the inner rings of the corresponding bearings A (51). The top of the pendulum body (1) is provided with upwardly extending ears (10) at intervals, and the ears (10) are respectively provided with bearings B (17). The two ends of the short shaft (7) are respectively plugged into the inner rings of the corresponding bearings B (17), and the long shaft (6) passes through the center of the short shaft (7).

9. The core structure for a laser level according to claim 8, characterized in that: A pendulum lock (8) is provided at the lower portion of the pendulum body (1) and can be driven by a switch on the housing of the laser level instrument, thereby locking the pendulum body (1) so that it cannot swing freely.

10. The core structure for a laser level according to claim 9, characterized in that: The swing lock (8) includes two locking arms (81) whose ends are fixed to the bottom of the inner cavity of the laser level housing by an axis hinge, and the two locking arms (81) clamp the outer wall of the fixing seat (11) at one end away from the respective hinge axes, and a torsion spring (82) is provided on the hinge axis of one locking arm (81) to keep the locking arm (81) clamped to the fixing seat (11), and a guide groove (83) is provided on the other locking arm (81), and a synchronization rod (84) that can be inserted into the guide groove (83) is provided on the locking arm (81) with the torsion spring (82), and any one of the locking arms (81) is provided with a toggle block (85) that can cooperate with the switch on the laser level housing, and a slope (86) is provided on the toggle block (85) that can be squeezed when the switch on the laser level housing moves, thereby driving the locking arm (81) to open along the hinge axis.

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