A jigsaw angle adjustment mechanism

Abstract

The utility model relates to a kind of curve saw angle adjusting mechanism in the field of curve saw, including base and the shell being set on base, the connecting portion is formed on base, connecting portion is connected with shell by connecting piece, base can be rotated adjusting around connecting piece by connecting portion, shell can be relative to base and be inclined angle adjusted, the inside of shell is formed with accommodating cavity, rotatable adjusting shaft is arranged in accommodating cavity, rotating adjusting part and locking portion are formed on connecting portion, adjusting shaft is connected with gear transmission part and locking block, gear transmission part and rotating adjusting part are engaged connection, locking block and locking portion are matched connection, the utility model utilizes the accurate cooperation of gear transmission, realizes the accurate control to the inclination angle of base, improves the precision of angle adjustment, by manually operating the axial movement and rotation of adjusting shaft, the whole process of unlocking, angle adjustment and locking can be completed, improve the convenience and adjustment efficiency of angle adjustment.

Description

Technical Field

[0001] This utility model relates to the field of jigsaws, specifically to a jigsaw angle adjustment mechanism. Background Technology

[0002] As an important power tool, the jigsaw has a wide range of applications, including but not limited to metal processing, wood cutting, and non-metallic material forming. It achieves efficient cutting of complex curves, straight lines, or irregular shapes through a reciprocating or track-moving saw blade. With the development of lightweight, efficient, and intelligent power tools, the requirements for the convenience, connection reliability, and operational safety of jigsaws are increasing.

[0003] In the structure of a jigsaw, the base is a crucial component that directly contacts the material being processed and guides the saw blade's trajectory. To accommodate different beveling requirements, the base is typically connected to the machine body via a tilt adjustment mechanism, which allows the base's angle to be adjusted relative to the plane of the saw blade's movement. In existing technologies, the base's tilt adjustment mechanism often employs a hinged or rotating shaft structure, achieving angle fixation through bolt fastening, eccentric wheel locking, or gear engagement. During operation, the user must manually unlock the adjustment component, rotate the base to the target angle, and then relock it. Some designs also include an angle dial for auxiliary positioning.

[0004] However, existing jigsaw base tilt adjustment mechanisms still have significant drawbacks: some existing mechanisms require tools (such as screwdrivers) for adjustment, resulting in low operational efficiency and an inability to achieve rapid adjustments. Furthermore, they are structurally complex, have numerous parts, and incur high maintenance costs. Secondly, the adjustment settings of existing angle adjustment mechanisms are cumbersome, leading to low adjustment efficiency between the base and the machine body, impacting both adjustment efficiency and work efficiency. Additionally, the adjustment precision control of existing mechanisms is poor, affecting the control of the tilt angle. These problems limit the applicability of jigsaws in precision machining scenarios, necessitating a new angle adjustment mechanism that combines high precision, high stability, and ease of operation. Utility Model Content

[0005] The purpose of this invention is to address the above-mentioned deficiencies by providing a jigsaw angle adjustment mechanism. This addresses the technical problems in the background art of how to improve the adjustment efficiency of the jigsaw angle adjustment mechanism and ensure the accuracy of the jigsaw angle adjustment.

[0006] The objective of this utility model is achieved through the following means:

[0007] A jigsaw angle adjustment mechanism includes a base and a housing disposed on the base. A connecting part is formed on the base, and the connecting part is connected to the housing through a connector. The base can be rotated around the connector through the connecting part, so that the housing can be tilted relative to the base. A receiving cavity is formed inside the housing, and a rotatable adjustment shaft is disposed in the receiving cavity. One end of the adjustment shaft extends outward through the receiving cavity. The connecting part passes into the receiving cavity and has a rotation adjustment part and a locking part. A toothed transmission component and a locking block are connected to the adjustment shaft. The toothed transmission component is engaged with the rotation adjustment part, and the locking block is paired with the locking part. By driving the adjustment shaft, the toothed transmission component and the locking block can be driven to enter an unlocked state or a locked state.

[0008] In the unlocked state, adjusting the axial direction of the housing allows for axial movement, which in turn moves the toothed transmission component and the locking block synchronously, causing the locking block to disengage from the locking part. The adjusting shaft can then drive the toothed transmission component to rotate the rotary adjustment part, allowing the base to be tilted relative to the housing.

[0009] In the locked state, the cavity is equipped with an elastic element that provides a continuous reset force to the adjusting shaft. When the axial tension on the adjusting shaft is released, the elastic element can drive the adjusting shaft to move axially within the cavity, and can also drive the toothed transmission element and the locking block to move synchronously, so that the locking block and the locking part are locked and positioned, and the base and the housing form a lock.

[0010] Furthermore, as described above, the connecting part is protruding on the base, the rotating adjustment part is provided with a toothed block, and the locking part and the locking block are engaged and connected through a toothed positioning structure.

[0011] The rotary adjustment unit adopts a toothed positioning structure with toothed blocks and locking blocks for meshing connection. Users can directly adjust the angle by operating the adjustment shaft, avoiding the cumbersome operation of using tools such as screwdrivers, and significantly improving adjustment efficiency. At the same time, the toothed meshing structure has high positioning accuracy, which can effectively reduce the error during angle adjustment and improve the stability of angle adjustment, making it suitable for precision machining scenarios.

[0012] Furthermore, as described above, the locking block is coaxially connected to the adjusting shaft through a through hole, and a stop portion is formed on the side of the locking block. A limiting portion is formed on the inner wall of the receiving cavity to contact the stop portion, so that the adjusting shaft can drive the locking block to move axially. When the adjusting shaft rotates, the locking block can apply radial rotational resistance to the locking block through the contact cooperation between the stop portion and the limiting portion.

[0013] The locking block is coaxially connected to the adjusting shaft through a through hole, ensuring synchronous axial movement of the adjusting shaft and the locking block, and enabling rapid switching between unlocking and locking states. The side stop and the limiting part of the inner wall of the receiving cavity make contact and cooperate. When the adjusting shaft rotates, the contact between the stop and the limiting part will generate radial resistance, so that the locking block can only move axially and cooperate with the locking part to form a locking or unlocking state. This ensures the positioning reliability of the base and the housing after angle adjustment and further improves the adjustment accuracy.

[0014] Further as described above, the toothed transmission component includes an adjusting gear, a transmission gear, and a guide shaft. The adjusting gear is coaxially connected to the adjusting shaft, and the adjusting shaft can drive the adjusting gear to rotate for adjustment. A mounting block is provided inside the receiving cavity. One end of the adjusting shaft passes through the mounting hole and extends outward to the outside of the housing. The other end of the adjusting shaft forms a mating end. The guide shaft passes through the mounting block and is connected to the receiving cavity. The transmission gear is coaxially connected to the guide shaft, and the transmission gear meshes with the adjusting gear and the toothed block. The adjusting gear can drive the toothed block to rotate through the transmission gear.

[0015] The adjusting gear is coaxially connected to the adjusting shaft, which can directly convert the user's rotation operation into the rotation of the transmission gear. The transmission gear then drives the toothed block (rotation adjustment part) to rotate, ultimately causing the base to adjust the angle relative to the housing. This gear transmission structure makes its control more precise and the tilt angle adjustment more accurate. At the same time, the operation of the adjusting shaft is simple and convenient, significantly improving the adjustment efficiency.

[0016] Furthermore, as described above, the inner wall of the receiving cavity forms a limiting channel, and the adjusting gear and locking block are built into the limiting channel. An adjusting gap is formed in the limiting channel, so that the adjusting shaft can drive the adjusting gear and locking block to move axially along the adjusting gap.

[0017] The limiting channel in the inner wall of the accommodating cavity provides dedicated movement space for the adjusting gear and the locking block. The design of the adjustment gap allows the adjusting shaft to drive both to make necessary axial movements (unlocking / locking), while limiting the radial offset of the locking block. This ensures the meshing stability of the adjusting gear, the transmission gear, and the toothed block, as well as the precise fit between the locking block and the locking part. This structure effectively avoids transmission failure or locking loosening caused by the shaking of parts, and improves the operating accuracy and reliability of the angle adjustment mechanism.

[0018] Specifically, the adjusting gear and the transmission gear continuously mesh with the toothed block. When a pulling force is applied to the adjusting shaft to move outward from the housing, the adjusting gear and the transmission gear can move synchronously along the axial direction. At this time, the transmission gear moves along the toothed block. After the locking block disengages from the locking part, the rotating shaft can drive the adjusting gear to rotate and adjust, so that the transmission gear drives the toothed block to rotate.

[0019] Conversely, when the tension on the adjusting shaft is released, the elastic action of the spring causes the adjusting gear and transmission gear on the adjusting shaft to move synchronously along the axial direction to reset, and the locking block moves to lock with the locking part.

[0020] Furthermore, as described above, the elastic element is composed of a spring, which is sleeved with the adjusting shaft so that one end of the spring contacts the adjusting gear and the other end of the spring contacts the mounting block.

[0021] The elastic element is installed by connecting a spring to the adjusting shaft, which is simple in structure and reliable in installation. One end of the spring contacts the adjusting gear and the other end contacts the mounting block. When the axial tension of the adjusting shaft is released, the spring's return force can automatically drive the adjusting shaft to move within the receiving cavity, causing the locking block and locking part to lock quickly without the need for manual reset by the user, simplifying the adjustment steps and improving operating efficiency. At the same time, the continuous spring force ensures the stability of the locking state and avoids the problem of angle deviation caused by insufficient locking force.

[0022] Furthermore, the above description further states that an angle sensor for detecting the rotation angle of the adjustment shaft is provided in the receiving cavity. The angle sensor is paired with the docking end through the detection end, so that the rotation of the adjustment shaft can drive the detection end to rotate synchronously. The angle sensor is electrically connected to a display screen for displaying the adjustment angle, and the display screen is exposed on the housing.

[0023] The angle sensor is paired with the mating end of the adjustment shaft through the detection end, which can detect the rotation angle of the adjustment shaft in real time and convert it into an electrical signal and transmit it to the display screen. Users can directly obtain the current tilt angle of the base by observing the display screen, avoiding the adjustment error caused by the lack of angle feedback in traditional mechanisms, and significantly improving the accuracy of angle adjustment. At the same time, the display screen is exposed on the housing, which is convenient for users to view in real time, improving the convenience of operation and the precision of processing.

[0024] Furthermore, as described above, the exposed end of the adjusting axial housing is connected to an adjusting knob, which has a scale for adjusting the rotation angle.

[0025] The adjustment knob connected to the end of the adjustment shaft provides users with a more intuitive operating interface. The scale markings on the knob help users quickly locate the target rotation angle, avoiding adjustment errors caused by blind rotation. Users can directly control the rotation of the adjustment shaft by rotating the knob. With the real-time feedback from the angle sensor, precise correspondence can be achieved, further simplifying the adjustment process and improving adjustment efficiency and accuracy.

[0026] Further as described above, the housing is composed of a first cover and a second cover, which are paired and fastened together. A receiving cavity is formed between the first cover and the second cover. The first cover is provided with a rotating part that is paired with the connecting part, so that the connecting member passes through the rotating part and connects with the connecting part.

[0027] The housing adopts a structure in which the first and second shell covers are snapped together, which simplifies the manufacturing of the housing and reduces the structural complexity; the receiving cavity is formed by the two shell covers together, providing a stable installation space for internal parts, and facilitating disassembly and assembly during subsequent maintenance.

[0028] The beneficial effects of this utility model are as follows: When unlocking, simply pull the adjusting shaft axially and rotate it to drive the toothed transmission component to rotate synchronously. This allows the base to rotate and adjust the angle. After releasing the adjusting shaft, the elastic element's reset force automatically drives the locking block and locking part to lock, achieving rapid locking and positioning. The operation process is simple and efficient, improving the angle adjustment efficiency of the base and housing. The toothed transmission component and the rotating adjustment part are connected by toothed meshing. Utilizing the precise cooperation of the toothed transmission, accurate control of the base's tilt angle is achieved, improving the accuracy of angle adjustment and enhancing the applicability of the jigsaw in precision machining scenarios. The entire process of unlocking, angle adjustment, and locking can be completed by manually operating the axial movement and rotation of the adjusting shaft, without the need for external tools such as screwdrivers, simplifying the operation steps and improving the convenience and efficiency of angle adjustment. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0030] Figure 2 This is a schematic diagram of the exploded structure of this embodiment;

[0031] Figure 3 for Figure 2 A magnified view of part A in the diagram;

[0032] Figure 4 This is a schematic diagram of the internal structure of this embodiment;

[0033] Figure 5 This is a floor plan view of this embodiment;

[0034] Figure 6 This is a schematic diagram of the locked state in this embodiment;

[0035] Figure 7 This is a schematic diagram of the unlocked state in this embodiment;

[0036] Figure 8 This is a partial structural diagram of this embodiment;

[0037] The reference numerals in the figure are as follows:

[0038] 100-Base, 101-Connecting part, 102-Rotation adjustment part, 103-Locking part;

[0039] 200-Housing shell, 201-First shell cover, 2011-Rotating part, 202-Second shell cover, 203-Receiving cavity, 204-Limiting channel, 205-Limiting part;

[0040] 300 - Adjustment shaft, 301 - Connecting end;

[0041] 400-Locking block, 401-Stop part, 402-Toothed part, 403-Through hole;

[0042] 500-Adjusting gear, 501-Step section, 600-Transmission gear, 700-Guide shaft, 800-Tooth block, 900-Angle sensor, 901-Detection end;

[0043] 1-Connector, 2-Mounting block, 3-Adjusting knob, 4-Elastic element, 5-Reset element, 6-Display screen. Detailed Implementation

[0044] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0045] To make the technical problem to be solved, the technical solution and the beneficial effects of this utility model clearer, the following describes the solution in further detail with reference to the accompanying drawings and embodiments.

[0046] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this scheme and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0047] In this embodiment, refer to Figures 1-8The present invention relates to a jigsaw angle adjustment mechanism, comprising a base 100 and a housing 200 disposed on the base 100. A connecting portion 101 is formed on the base 100, and the connecting portion 101 is connected to the housing 200 via a connecting member 1. The base 100 can be rotated and adjusted around the connecting member 1 via the connecting portion 101, allowing the housing 200 to be tilted relative to the base 100. A receiving cavity 203 is formed inside the housing 200, and a rotatable adjustment shaft 300 is disposed within the receiving cavity 203. One end of the adjusting shaft 300 extends through the receiving cavity 203 to the outside of the housing 200. The connecting part 101 is inserted into the receiving cavity 203. A rotary adjusting part 102 and a locking part 103 are formed on the connecting part 101. A toothed transmission member and a locking block 400 are connected to the adjusting shaft 300. The toothed transmission member is engaged with the rotary adjusting part 102. The locking block 400 is paired with the locking part 103. By driving the adjusting shaft 300, the toothed transmission member and the locking block 400 can be driven to enter an unlocked state or a locked state.

[0048] In the unlocked state, the adjusting shaft 300 moves axially outward from the housing 200, which can drive the toothed transmission component and the locking block 400 to move synchronously, so that the locking block 400 is released from the locking part 103. The adjusting shaft 300 can drive the toothed transmission component to rotate the rotating adjusting part 102, so that the base 100 can be tilted relative to the housing 200.

[0049] In the locked state, the receiving cavity 203 is provided with an elastic element 4 for providing a continuous reset force to the adjusting shaft 300. When the axial tension on the adjusting shaft 300 is released, the elastic element 4 can drive the adjusting shaft 300 to move axially into the receiving cavity 203, and can drive the toothed transmission element and the locking block 400 to move synchronously, so that the locking block 400 is locked and positioned with the locking part 103, and the base 100 and the housing 200 are locked together.

[0050] The connecting part 101 is protruding on the base 100, the rotating adjustment part 102 is provided with a toothed block 800, and the locking part 103 and the locking block 400 are engaged and connected through the toothed positioning structure.

[0051] The rotary adjustment unit 102 is connected by a toothed positioning structure of toothed block 800 and locking block 400. Users can directly adjust the angle by operating the adjustment shaft 300, avoiding the cumbersome operation of using tools such as screwdrivers, and significantly improving the adjustment efficiency. At the same time, the toothed meshing structure has high positioning accuracy, which can effectively reduce the error during angle adjustment and improve the stability of angle adjustment, making it suitable for precision machining scenarios.

[0052] The pairing locking structure of the locking block 400 and the locking part 103, combined with the continuous restoring elastic force of the elastic element 4, ensures the firmness of the locking state, avoids accidental unlocking due to vibration or external force, and ensures the stability after angle adjustment.

[0053] The locking block 400 is coaxially connected to the adjusting shaft 300 through a through hole 403. A stop portion 401 is formed on the side of the locking block 400, and a limiting portion 205 is formed on the inner wall of the receiving cavity 203 to contact the stop portion 401. This allows the adjusting shaft 300 to drive the locking block 400 to move axially. When the adjusting shaft 300 rotates, the contact engagement between the stop portion 401 and the limiting portion 205 applies radial rotational resistance to the locking block 400. A retaining ring is connected to the adjusting shaft 300 to prevent the locking block 400 from falling off.

[0054] The locking block 400 is coaxially connected to the adjusting shaft 300 through the through hole 403, ensuring synchronous axial movement of the adjusting shaft 300 and the locking block 400, and realizing rapid switching between unlocking and locking states. The side stop 401 contacts and engages with the limiting part 205 on the inner wall of the receiving cavity 203. When the adjusting shaft 300 rotates, the contact between the stop 401 and the limiting part 205 generates radial resistance, so that the locking block 400 can only move axially and cooperates with the locking part 103 to form a locking or unlocking state, thereby ensuring the positioning reliability of the base 100 and the housing 200 after angle adjustment and further improving the adjustment accuracy.

[0055] Specifically, the bottom of the locking block 400 has a toothed portion 402, and the locking portion 103 has a toothed structure that meshes with the toothed portion 402. A positioning post is provided in the receiving cavity 203, one end of which extends into the toothed structure, and a spring is sleeved on the positioning post.

[0056] In the initial state, the elastic restoring force of the spring can drive the adjusting shaft 300 to move into the receiving cavity 203, so that the toothed part 402 engages with the toothed structure. At the same time, the contact between the limiting part 205 and the stop part 401 forms a lock to prevent the base 100 from tilting.

[0057] The toothed transmission component includes an adjusting gear 500, a transmission gear 600, and a guide shaft 700. The adjusting gear 500 is coaxially connected to the adjusting shaft 300, and the adjusting shaft 300 can drive the adjusting gear 500 to rotate for adjustment. A mounting block 2 is provided in the receiving cavity 203. One end of the adjusting shaft 300 passes through the mounting hole and extends outward to the outside of the housing 200. The other end of the adjusting shaft 300 forms a mating end 301. The guide shaft 700 passes through the mounting block 2 and is connected to the receiving cavity 203. The transmission gear 600 is coaxially connected to the guide shaft 700, and the transmission gear 600 meshes with the adjusting gear 500 and the toothed block 800. The adjusting gear 500 can drive the toothed block 800 to rotate through the transmission gear 600.

[0058] The adjusting gear 500 is coaxially connected to the adjusting shaft 300, which can directly convert the user's rotation operation into the rotation of the transmission gear 600. The transmission gear 600 then drives the toothed block 800 (rotation adjustment part 102) to rotate, ultimately causing the base 100 to adjust the angle relative to the housing 200. This gear transmission structure makes its control precision higher and the adjustment tilt angle more accurate. At the same time, the operation of the adjusting shaft 300 is simple and convenient, significantly improving the adjustment efficiency.

[0059] Specifically, one end of the adjusting gear 500 extends toward and contacts the locking block 400, and the other end of the adjusting gear 500 forms a stepped portion 501, so that a locking gap is formed between the stepped portion 501 and the locking block 400. The transmission gear 600 is coaxially connected with the guide shaft 700, and the transmission gear 600 is meshed with the adjusting gear 500. At the same time, the transmission gear 600 can be locked through the locking gap, so that the axial movement of the adjusting shaft 300 can drive the transmission gear 600 to move synchronously.

[0060] Specifically, the adjusting shaft 300 is provided with a retaining part for retaining the adjusting gear 500. The adjusting gear 500 is paired and retained with the retaining part through a connecting hole, so that the rotation of the adjusting shaft 300 can drive the adjusting gear 500 to rotate synchronously.

[0061] The inner wall of the receiving cavity 203 forms a limiting channel 204. The adjusting gear 500 and the locking block 400 are built into the limiting channel 204. An adjusting gap is formed in the limiting channel 204, so that the adjusting shaft 300 can drive the adjusting gear 500 and the locking block 400 to move axially along the adjusting gap.

[0062] The limiting channel 204 on the inner wall of the receiving cavity 203 provides dedicated moving space for the adjusting gear 500 and the locking block 400. The design of the adjustment gap allows the adjusting shaft 300 to drive both to make necessary axial movements (unlocking / locking), while limiting the radial offset of the locking block 400. This ensures the meshing stability of the adjusting gear 500 with the transmission gear 600 and the toothed block 800, as well as the precise fit between the locking block 400 and the locking part 103. This structure effectively avoids transmission failure or locking loosening caused by the shaking of parts, and improves the operating accuracy and reliability of the angle adjustment mechanism.

[0063] Specifically, the adjusting gear 500 and the transmission gear 600 continuously mesh with the toothed block 800. When a pulling force is applied to the adjusting shaft 300 to move outward from the housing 200, the adjusting gear 500 and the transmission gear 600 can move synchronously along the axial direction. At this time, the transmission gear 600 moves along the toothed block 800. After the locking block 400 disengages from the locking part 103, the rotating shaft can drive the adjusting gear 500 to rotate and adjust, so that the transmission gear 600 drives the toothed block 800 to rotate.

[0064] Conversely, when the tension on the adjusting shaft 300 is released, the elastic action of the spring causes the adjusting gear 500 and the transmission gear 600 on the adjusting shaft 300 to move synchronously along the axial direction to reset, and causes the locking block 400 to move to lock with the locking part 103.

[0065] The elastic element 4 is composed of a spring, which is sleeved with the adjusting shaft 300 so that one end of the spring contacts the adjusting gear 500 and the other end of the spring contacts the mounting block 2.

[0066] The elastic element 4 is installed by connecting the spring and the adjusting shaft 300 together, which is simple in structure and reliable in installation. One end of the spring contacts the adjusting gear 500 and the other end contacts the mounting block 2. When the axial tension of the adjusting shaft 300 is released, the spring's return force can automatically drive the adjusting shaft 300 to move into the receiving cavity 203, thereby quickly locking the locking block 400 and the locking part 103 without the need for manual reset by the user, simplifying the adjustment steps and improving operating efficiency. At the same time, the continuous spring force ensures the stability of the locking state and avoids the problem of angle deviation caused by insufficient locking force.

[0067] Specifically, one end of the spring contacts the step portion 501. When an outward pulling force is applied to the adjusting shaft 300, the spring is compressed. At this time, the locking block 400 disengages from the locking portion 103, allowing the adjusting shaft 300 to drive the adjusting gear 500 to rotate. Conversely, when the pulling force on the adjusting shaft 300 is released, the spring returns to its original position, locking the locking block 400 and the locking portion 103.

[0068] An angle sensor 900 for detecting the rotation angle of the adjustment shaft 300 is provided in the cavity 203. The angle sensor 900 is paired with the docking end 301 through the detection end 901, so that the rotation of the adjustment shaft 300 can drive the detection end 901 to rotate synchronously. The angle sensor 900 is electrically connected to a display screen 6 for displaying the adjustment angle. The display screen 6 is exposed on the housing 200.

[0069] Angle sensor 900 is paired with docking end 301 of adjustment shaft 300 through detection end 901, and can detect the rotation angle of adjustment shaft 300 in real time and convert it into an electrical signal and transmit it to display screen 6. Users can directly obtain the current tilt angle of base 100 by observing display screen 6, avoiding the adjustment error caused by the lack of angle feedback in traditional mechanisms, and significantly improving the accuracy of angle adjustment. At the same time, display screen 6 is exposed on housing 200, which is convenient for users to view in real time, improving the convenience of operation and the precision of processing.

[0070] Specifically, a reset member 5 is provided inside the receiving cavity 203 to apply a spring force to the angle sensor 900. When the adjusting shaft 300 moves outward, the reset member 5 drives the angle sensor 900 to move synchronously to prevent the detection end 901 from falling off the docking end 301. The reset member 5 is made of a spring.

[0071] An adjustment knob 3 is connected to the end of the adjustment shaft 300 that protrudes outside the housing 200. The adjustment knob 3 has a scale for adjusting the rotation angle. The adjustment knob 3 connected to the end of the adjustment shaft 300 provides the user with a more intuitive operating interface. The scale markings on the knob help the user quickly locate the target rotation angle, avoiding adjustment errors caused by blind rotation. The user can directly control the rotation of the adjustment shaft 300 by rotating the knob. With the real-time feedback from the angle sensor 900, precise correspondence can be achieved, further simplifying the adjustment process and improving adjustment efficiency and accuracy.

[0072] The housing 200 is composed of a first housing cover 201 and a second housing cover 202. The first housing cover 201 and the second housing cover 202 are paired and fastened together. A receiving cavity 203 is formed between the first housing cover 201 and the second housing cover 202. The first housing cover 201 is provided with a rotating part 2011 that is paired with the connecting part 101, so that the connecting member 1 passes through the rotating part 2011 and connects with the connecting part 101.

[0073] The housing 200 adopts a structure in which the first cover 201 and the second cover 202 are fastened together, which simplifies the manufacturing of the housing 200 and reduces the structural complexity; the receiving cavity 203 is formed by the two covers together, providing a stable installation space for internal parts, and facilitating disassembly and assembly during subsequent maintenance.

[0074] The specific adjustment process in this embodiment is as follows:

[0075] By manually applying a pulling force to the adjusting shaft 300, it overcomes the elastic restoring force of the spring, causing the adjusting shaft 300 to drive the adjusting gear 500 and the locking block 400 to move synchronously with the transmission gear 600 along the axial direction. When the toothed portion 402 of the locking block 400 moves out of the engagement of the locking portion 103, the adjusting shaft 300 can rotate, causing the adjusting shaft 300 to drive the adjusting gear 500 to rotate. In turn, the transmission gear 600 drives the toothed block 800 to adjust the angle of the base 100, allowing the base 100 to tilt relative to the housing 200 around the connecting line. With the rotation of the adjusting shaft 300, the rotation angle can be detected by the detection end 901 of the angle sensor 900, and the rotation angle can be detected in real time using the display screen 6.

[0076] When the angle is adjusted to the set angle, the tension applied to the adjusting shaft 300 is released. At this time, the spring generates a restoring force, which drives the adjusting shaft 300 to move the adjusting gear 500 and the locking block 400 synchronously with the transmission gear 600. This allows the locking block 400 to mesh with the toothed structure on the locking part 103 through the toothed part 402, thereby completing the locking and fixing of the base 100 and the housing 200.

[0077] The entire process of unlocking, angle adjustment, and locking can be completed by manually operating the axial movement and rotation of the adjusting shaft 300, without the need for external tools such as screwdrivers, which simplifies the operation steps. The toothed transmission component and the rotation adjustment part 102 are connected by toothed meshing. By utilizing the precise matching of the toothed transmission, the tilt angle of the base 100 can be precisely controlled, improving the accuracy of angle adjustment and enhancing the convenience and efficiency of angle adjustment.

[0078] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A jigsaw angle adjustment mechanism, comprising a base and a housing disposed on the base, characterized in that: The base has a connecting part, which is connected to the housing via a connector. The base can be rotated around the connector via the connecting part, allowing the housing to be tilted relative to the base. The housing has an internal cavity, and a rotatable adjusting shaft is provided inside the cavity. One end of the adjusting shaft extends outward through the cavity. The connecting part passes into the cavity and has a rotating adjusting part and a locking part. A toothed transmission component and a locking block are connected to the adjusting shaft. The toothed transmission component meshes with the rotating adjusting part, and the locking block is paired with the locking part. By driving the adjusting shaft, the toothed transmission component and the locking block can be moved to an unlocked or locked state. In the unlocked state, adjusting the axial direction of the housing allows for axial movement, which in turn moves the toothed transmission component and the locking block synchronously, causing the locking block to disengage from the locking part. The adjusting shaft can then drive the toothed transmission component to rotate the rotary adjustment part, allowing the base to be tilted relative to the housing. In the locked state, the cavity is equipped with an elastic element that provides a continuous reset force to the adjusting shaft. When the axial tension on the adjusting shaft is released, the elastic element can drive the adjusting shaft to move axially within the cavity, and can also drive the toothed transmission element and the locking block to move synchronously, so that the locking block and the locking part are locked and positioned, and the base and the housing form a lock.

2. The jigsaw angle adjustment mechanism according to claim 1, characterized in that: The connecting part is protruding on the base, the rotating adjustment part is provided with a toothed block, and the locking part and the locking block are engaged and connected by a toothed positioning structure.

3. The jigsaw angle adjustment mechanism according to claim 1, characterized in that: The locking block is coaxially connected to the adjusting shaft through a through hole, and a stop portion is formed on the side of the locking block. A limiting portion is formed on the inner wall of the receiving cavity to contact the stop portion, so that the adjusting shaft can drive the locking block to move axially. When the adjusting shaft rotates, the locking block can apply radial rotational resistance to the locking block through the contact cooperation between the stop portion and the limiting portion.

4. The jigsaw angle adjustment mechanism according to claim 2, characterized in that: The toothed transmission component includes an adjusting gear, a transmission gear, and a guide shaft. The adjusting gear is coaxially connected to the adjusting shaft, and the adjusting shaft can drive the adjusting gear to rotate for adjustment. A mounting block is provided inside the receiving cavity. One end of the adjusting shaft passes through the mounting hole and extends outward to the outside of the housing. The other end of the adjusting shaft forms a mating end. The guide shaft passes through the mounting block and connects to the receiving cavity. The transmission gear is coaxially connected to the guide shaft, and the transmission gear meshes with the adjusting gear and the toothed block. The adjusting gear can drive the toothed block to rotate through the transmission gear.

5. The jigsaw angle adjustment mechanism according to claim 4, characterized in that: The inner wall of the receiving cavity forms a limiting channel, and the adjusting gear and locking block are built into the limiting channel. An adjusting gap is formed in the limiting channel, so that the adjusting shaft can drive the adjusting gear and locking block to move axially along the adjusting gap.

6. The jigsaw angle adjustment mechanism according to claim 4, characterized in that: The elastic element is composed of a spring, which is sleeved with the adjusting shaft so that one end of the spring contacts the adjusting gear and the other end of the spring contacts the mounting block.

7. The jigsaw angle adjustment mechanism according to claim 4, characterized in that: An angle sensor for detecting the rotation angle of the adjustment shaft is installed inside the cavity. The angle sensor is paired with the docking end through the detection end, so that the rotation of the adjustment shaft can drive the detection end to rotate synchronously. The angle sensor is electrically connected to a display screen for displaying the adjustment angle, and the display screen is exposed on the housing.

8. A jigsaw angle adjustment mechanism according to any one of claims 1-7, characterized in that: An adjustment knob is connected to the exposed end of the adjusting axial housing, and the adjustment knob is provided with a scale for adjusting the rotation angle.

9. The jigsaw angle adjustment mechanism according to claim 8, characterized in that: The housing is composed of a first cover and a second cover, which are paired and fastened together. A receiving cavity is formed between the first cover and the second cover. The first cover is provided with a rotating part that is paired with the connecting part, so that the connecting part passes through the rotating part and connects with the connecting part.

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