Locking device and positioning jig

Abstract

The embodiment of the application provides a locking device and a positioning clamp, and relates to the technical field of sheet metal detection. The locking device comprises a stand column and a locking mechanism. The locking mechanism is arranged at one end of the stand column along an axial direction. The locking mechanism comprises an operating assembly, a rotating shaft and two limiting rods arranged in a cross manner. The rotating shaft is arranged in the stand column. The position where the two limiting rods intersect is a first position. The two limiting rods are rotationally connected with the rotating shaft at the first position. The limiting rods have operating portions and locking portions. The first position is located between the corresponding operating portions and the corresponding locking portions along the length direction of the limiting rods. The operating assembly is connected with the operating portions of the two limiting rods to drive the two operating portions to move close to or away from each other. The locking device of the embodiment of the application is connected with the operating portions of the two limiting rods through the operating assembly, drives the two operating portions to move close to or away from each other, causes the locking portions of the two limiting rods to also move close to or away from each other, and thus realizes the unlocking and locking of the locking device, so as to improve the locking efficiency of the locking device.

Description

Technical Field

[0001] This invention relates to the field of sheet metal inspection technology, specifically to a locking device and a positioning fixture. Background Technology

[0002] Sheet metal parts are characterized by their light weight, high strength, strong conductivity (suitable for electromagnetic shielding), low cost, and good mass production performance. They are widely used in electronics, communications, automotive, and medical device industries. Therefore, stamped sheet metal parts are characterized by diverse varieties and small-batch production. Measuring sheet metal parts requires the use of positioning fixtures, but these fixtures often suffer from low installation and removal efficiency. Summary of the Invention

[0003] In view of this, the embodiments of this application aim to provide a locking device and a positioning clamp to improve the locking efficiency of the locking device.

[0004] To achieve the above objectives, one embodiment of this application provides a locking device, comprising:

[0005] Columns;

[0006] A locking mechanism is provided at one end of the column along the axial direction. The locking mechanism includes an operating component, a rotating shaft, and two intersecting limiting rods. The rotating shaft is provided on the column. The position where the two limiting rods intersect is the first position. At the first position, both limiting rods are rotatably connected to the rotating shaft. Each limiting rod has an operating part and a locking part. The first position is located between the corresponding operating part and the corresponding locking part along the length direction of the limiting rod. The operating component is connected to the operating parts of the two limiting rods respectively to drive the two operating parts to move closer or further apart.

[0007] In one embodiment, the operating component includes two movable rods rotatably connected. The position where the two movable rods are rotatably connected is a second position. The ends of the two movable rods opposite to the second position are respectively rotatably connected to the operating parts of the corresponding two limiting rods.

[0008] In one embodiment, the operating component includes a locking lever, one end of which is rotatably connected to the movable lever at the second position.

[0009] In one embodiment, the operating component includes a handle, and the side wall of the column along the extension direction of the handle has a limiting groove arranged along the axial direction of the column. The handle is connected to the locking rod, and the handle passes through the limiting groove. The handle can move along the limiting groove to drive the two operating parts to move closer or further apart from each other.

[0010] In one embodiment, one end of the limiting groove along the axial direction of the column is in a locking position, the handle is located in the locking position, the handle abuts against the column, and the distance between the two operating parts is at its maximum.

[0011] In one embodiment, the locking mechanism further includes an elastic reset member, one end of which is connected to the rotating shaft and the other end of which is connected to the lever. The elastic force of the elastic reset member can drive the lever to move to the locking position.

[0012] In one embodiment, the column has a clearance hole on its sidewall along the arrangement direction of the two operating parts, and the clearance hole can avoid the two operating parts when the two operating parts are far apart.

[0013] In one embodiment, the locking mechanism is provided at both ends of the column along the axial direction.

[0014] A second aspect of this application provides a positioning fixture, comprising:

[0015] The locking device described in any of the foregoing embodiments;

[0016] A connecting device is provided at both ends of the locking device along the axial direction. The connecting device has a limiting cavity, and the locking part can extend into the limiting cavity so that both ends of the locking device along the axial direction can be fixedly connected to the corresponding connecting device respectively.

[0017] An operating table, on which the connecting device is correspondingly provided;

[0018] A clamping device is connected to the connecting device at the other end, and the clamping device is used to clamp sheet metal parts.

[0019] In one embodiment, the connecting device has a boss, and two locking portions protrude from the corresponding limiting rods in opposite directions. When the locking portions of the two limiting rods enter the limiting cavity, the two locking portions can abut against the side of the boss near the limiting cavity, so that the locking device and the connecting device are fixedly connected.

[0020] The beneficial effects of this application embodiment are as follows: by connecting the operating component with the operating parts of the two limit rods, the two operating parts are driven to move closer or further apart, so that the locking parts of the two limit rods also move closer or further apart, thereby realizing the unlocking and locking of the locking device, which is beneficial to improving the locking efficiency of the locking device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the positioning fixture in one embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the locking device and the connecting device in one embodiment of this application;

[0023] Figure 3 for Figure 2 Axial cross-sectional view at point AA along the middle section;

[0024] Figure 4 for Figure 2 Side view along direction B;

[0025] Figure 5 for Figure 4 Cross-sectional view at the center CC.

[0026] Explanation of reference numerals in the attached figures

[0027] 1. Locking device; 11. Locking mechanism; 111. Limiting rod; 1111. Operating part; 1112. Locking part; 111a. First position; 112. Operating component; 1121. Movable rod; 1122. Locking rod; 1123. Handle; 112a. Second position; 113. Elastic reset component; 114. Rotating shaft; 12. Column; 12a. Limiting groove; 12aa. Locking position; 12b. Clearance hole; 2. Connecting device; 21. Boss; 2a. Limiting cavity; 3. Operating table; 4. Clamping device; 5. Sheet metal part. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed descriptions in the specific implementation should be understood as explanations of the purpose of this application and should not be regarded as undue limitations on this application.

[0029] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0030] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0031] In related technologies, positioning fixtures are required for precision measurement of sheet metal parts. These fixtures consist of a base frame and a detection block. The detection block is connected to the base frame by screws and pins, which results in low assembly and disassembly efficiency of the base frame and the detection block.

[0032] In view of this, this application provides a positioning fixture, please refer to the embodiments thereof. Figures 1-5 The positioning fixture includes a locking device 1, a connecting device 2, an operating table 3, and a clamping device 4. The locking device 1 has connecting devices 2 at both ends along the axial direction. Each connecting device 2 has a limiting cavity 2a, and a portion of the locking device 1 can extend into the limiting cavity 2a so that both ends of the locking device 1 along the axial direction can be fixedly connected to the corresponding connecting device 2. A corresponding connecting device 2 is provided on the operating table 3. The clamping device 4 is connected to the connecting device 2 at the other end and is used to clamp the sheet metal part 5.

[0033] For example, the connecting devices 2 are arranged in a rectangular array on the operating table 3 and cover the entire operating table 3. The locking device 1 is provided with connecting devices 2 at both ends along the axial direction. The locking device 1 extends into the limiting cavity 2a of the connecting device 2 and is fixedly connected to the connecting device 2. The clamping device 4 is fixedly connected to the connecting device 2 at one end away from the operating table 3 along the axial direction of the locking device 1, so that the clamping device 4 has enough space to clamp the sheet metal part 5.

[0034] For example, the control panel 3 is connected to the corresponding connection device 2.

[0035] In this embodiment, the locking device 1 can extend into the limiting cavity 2a of the connecting device 2 to achieve a quick and fixed connection with the connecting device 2, thereby enabling the positioning fixture to be quickly installed and removed according to the size of the sheet metal part 5, which is beneficial to improving the assembly efficiency of the positioning fixture and facilitating the positioning and clamping of the sheet metal part 5.

[0036] It is understood that the way the connecting device 2 is disposed on the operating table 3 is not limited. For example, the connecting device 2 can be slidably connected to the operating table 3. Furthermore, the operating table 3 has multiple parallel slide rails, and the connecting device 2 can slide on the slide rails.

[0037] In one embodiment, please refer to Figure 3The locking device 1 includes a column 12 and a locking mechanism 11. The locking mechanism 11 is located at one end of the column 12 along the axial direction. The locking mechanism 11 includes an operating component 112, a rotating shaft 114, and two intersecting limiting rods 111. The rotating shaft 114 is located on the column 12. The intersection of the two limiting rods 111 is the first position 111a. Both limiting rods 111 are rotatably connected to the rotating shaft 114 at the first position 111a. Each limiting rod 111 has an operating part 1111 and a locking part 1112. The first position 111a is located between the corresponding operating part 1111 and the corresponding locking part 1112 along the length direction of the limiting rod 111. The operating component 112 is connected to the operating parts 1111 of the two limiting rods 111 respectively to drive the two operating parts 1111 to move closer or further apart.

[0038] For example, the column 12 is a hollow column 12. The hollow column 12 is made of a rigid material. The clamping requirements of sheet metal parts 5 of different sizes can be met by replacing the components of the column 12. The locking mechanism 11 is inserted on one side of the column 12 along the axial direction so that the locking part 1112 extends out of the column 12.

[0039] For example, the locking part can extend into the limiting cavity so that both ends of the locking device along the axial direction can be fixedly connected to the corresponding connecting device respectively.

[0040] In this embodiment, two limiting rods 111 are arranged crosswise and can rotate around the first position 111a. Under the drive of the operating component 112, the two limiting rods 111 rotate in different directions, causing the two operating parts 1111 or locking parts 1112 to move closer to each other, so that the locking parts 1112 can extend into the limiting cavity 2a. When the two locking parts 1112 move away from each other, both locking parts 1112 can extend into the limiting cavity 2a, thereby realizing the quick installation of the locking device 1 and the connecting device 2, which is beneficial to improving the locking efficiency of the locking device 1.

[0041] It is understood that the operation component 112 can drive the two operation parts 1111 to move closer or further away from each other in any way. For example, the operation component 112 can drive one operation part 1111 to move closer or further away from the other operation part 1111, while the other operation part 1111 remains stationary.

[0042] In one embodiment, please refer to Figures 1-5 The connecting device 2 has a boss 21 and two locking parts 1112 protruding from the corresponding limiting rods 111 in opposite directions. When the locking parts 1112 of the two limiting rods 111 enter the limiting cavity 2a, the two locking parts 1112 can abut against the side of the boss 21 near the limiting cavity 2a, so that the locking device 1 and the connecting device 2 are fixedly connected.

[0043] For example, the boss 21 is configured as a ring and arranged along the inner sidewall of the connecting device 2.

[0044] In this embodiment, the locking portions 1112 of the two limiting rods 111 approach each other until they can extend into the limiting cavity 2a. The two locking portions 1112 move away from each other within the limiting cavity 2a, and the protruding portions of the two locking portions 1112 abut against the side of the boss 21 closest to the limiting cavity 2a, thereby fixing the locking device 1 and the connecting device 2 together. Through the abutting engagement between the locking portions 1112 of the limiting rods 111 and the boss 21 of the connecting device 2, the positioning fixture can be quickly assembled and disassembled, which is beneficial for improving the assembly efficiency of the positioning fixture.

[0045] In one embodiment, please refer to Figure 3 The operating component 112 includes two movable rods 1121 that are rotatably connected. The position where the two movable rods 1121 are rotatably connected is the second position 112a. The ends of the two movable rods 1121 that are away from the second position 112a are respectively rotatably connected to the operating parts 1111 of the corresponding two limiting rods 111.

[0046] In this embodiment, when the two movable rods 1121 are pulled at the second position 112a, the two movable rods 1121 will drive the operating parts 1111 or locking parts 1112 of the two limiting rods 111 to move closer or further apart. The structure is simple, the operation is convenient, and it is beneficial to reduce the processing and manufacturing cost.

[0047] In one embodiment, please refer to Figure 3 The operating component 112 includes a locking lever 1122, one end of which is rotatably connected to the movable lever 1121 at the second position 112a.

[0048] In this embodiment, pulling the locking rod 1122 axially causes it to pull the two movable rods 1121 to rotate relative to each other, thereby driving the operating parts 1111 or locking parts 1112 of the two limiting rods 111 to move closer or further apart. The locking rod 1122 in this embodiment extends the position that drives the two movable rods 1121 to rotate relative to each other, making the operating position of the operating component 112 flexible and adaptable, thus improving the adaptability of the operating component 112.

[0049] In one embodiment, please refer to Figures 2-4 The operating assembly 112 includes a handle 1123. The side wall of the column 12 along the extension direction of the handle 1123 has a limiting groove 12a arranged along the axial direction of the column 12. The handle 1123 is connected to the locking rod 1122. The handle 1123 passes through the limiting groove 12a and can move along the limiting groove 12a to drive the two operating parts 1111 to move closer or further apart from each other.

[0050] For example, one end of the handle 1123 is fixedly connected to the end of the locking handle 1122 away from the second position 112a, and the other end of the handle 1123 passes through the limiting groove 12a. The handle 1123 can move back and forth along the limiting groove 12a. The locking handle 1122 drives the two movable handles 1121 to rotate relative to each other, so as to drive the operating parts 1111 or locking parts 1112 of the two limiting handles 111 to move closer or further away from each other, so that the locking part 1112 of the limiting handle 111 can enter the limiting cavity 2a of the connecting device 2 and abut against the side of the boss 21 near the limiting cavity 2a, so that the locking device 1 and the connecting device 2 are fixedly connected.

[0051] In this embodiment, the handle 1123 passes through the limiting groove 12a, so that one end of the handle 1123 extends out of the column 12. By operating the part of the handle 1123 that extends out of the column 12, the handle 1123 can be moved along the limiting groove 12a, so that the locking device 1 and the connecting device 2 can be quickly connected or disconnected, which is beneficial to improving the convenience of installing and removing the locking device 1 and the connecting device 2.

[0052] In one embodiment, one end of the limiting groove 12a along the axial direction of the column 12 is the locking position 12aa, the handle 1123 is located in the locking position 12aa, the handle 1123 abuts against the column 12, and the distance between the two operating parts 1111 is at its maximum.

[0053] For example, when the lever 1123 is in the locked position 12aa, the limiting groove 12a restricts the lever 1123 from moving further in the direction along the limiting groove 12a toward the locked position 12aa. The two movable rods 1121 are horizontally aligned, and the distance between the two operating parts 1111 is at its maximum, as is the distance between the two locking parts 1112. When the lever 1123 moves away from the locked position 12aa along the limiting groove 12a, the two movable rods 1121 rotate relative to each other to drive the two operating parts 1111 to move closer to each other, and the two locking parts 1112 also move closer to each other.

[0054] In this embodiment, the lever 1123 moves along the limiting groove 12a toward the locking position 12aa. Once it reaches the locking position 12aa, it cannot move forward any further. This is to prevent the lever 1123 from continuing to move forward after reaching the locking position 12aa, which would reduce the distance between the two operating parts 1111 and thus reduce the risk of the locking device 1 and the connecting device 2 accidentally disengaging.

[0055] It is understandable that when the lever 1123 is in the locked position 12aa, the distance between the two operating parts 1111 is not limited. The distance between the two operating parts 1111 is sufficient to allow the two locking parts 1112 to abut against the side of the boss 21 near the limiting cavity 2a.

[0056] In one embodiment, please refer to Figure 4The locking mechanism 11 also includes an elastic reset member 113. One end of the elastic reset member 113 is connected to the rotating shaft 114, and the other end of the elastic reset member 113 is connected to the lever 1123. The elastic force of the elastic reset member 113 can drive the lever 1123 to move to the locking position 12aa.

[0057] For example, when the handlebar 1123 is in the locked position 12aa, the elastic reset member 113 is in an elastic equilibrium state. When the handlebar 1123 moves away from the locked position 12aa along the limiting groove 12a, the elastic reset member 113 is also stretched. The kinetic energy of the handlebar 1123 is stored in the elastic reset member 113. When the handlebar 1123 is stopped from being driven, the elastic potential energy stored in the elastic reset member 113 performs work on the handlebar 1123, which is converted into the kinetic energy of the handlebar 1123 to drive the handlebar 1123 to move to the locked position 12aa.

[0058] In this embodiment, the kinetic energy of the lever 1123 and the elastic potential energy of the elastic reset member 113 can be converted into each other. The elastic force of the elastic reset member 113 can drive the lever 1123 to move to the locking position 12aa, thereby improving the ease of operation. The elastic reset member 113 makes the lever 1123 tend to remain in the locking position 12aa, which helps to reduce the risk of accidental disengagement between the locking device 1 and the connecting device 2.

[0059] It is understood that when the lever 1123 is in the locked position 12aa, the state of the elastic reset member 113 is not limited. For example, when the lever 1123 is in the locked position 12aa, the elastic reset member 113 can also be in a stretched state to firmly fix the lever 1123 in the locked position 12aa.

[0060] It is understood that the specific structure of the locking mechanism 11 is not limited. For example, the locking mechanism 11 may not be provided with an elastic reset member 113, and the locking mechanism 11 may be fixed in the locking position 12aa by relying on the friction between the locking mechanism 11 and the column 12.

[0061] In one embodiment, please refer to Figure 2 and Figure 3 The column 12 has a clearance hole 12b on its side wall along the arrangement direction of the two operating parts 1111. When the two operating parts 1111 move away from each other, the clearance hole 12b can avoid the two operating parts 1111.

[0062] In this embodiment, when the two operating parts 1111 move away from each other and reach the maximum distance, the clearance hole 12b can avoid the two operating parts 1111, so that there is enough space in the column 12 to accommodate the two limiting rods 111, which is beneficial to flexibly arrange the limiting rods 111.

[0063] In one embodiment, please refer to Figures 2-4The column 12 is equipped with locking mechanisms 11 at both ends along the axial direction.

[0064] For example, a connecting device 2 is provided on the operating table 3, and another connecting device 2 is fixedly connected to the clamping device 4. A locking device 1 located at one end of the column 12 along the axial direction is fixedly connected to the connecting device 2 located on the operating table 3. A locking device 1 located at the other end of the column 12 along the axial direction is fixedly connected to the connecting device 2 fixedly connected to the clamping device 4, so as to form a positioning fixture to clamp the sheet metal part 5. For sheet metal parts 5 of different sizes, it is necessary to adjust the position of the positioning fixture. The clamping device 4 can be removed from the locking device 1 through the connecting device 2, or the locking device 1 and the clamping device 4 can be removed from the operating table 3 together.

[0065] In this embodiment, the locking mechanism 11 is disposed at both ends of the column 12 along the axial direction, so that both ends of the locking device 1 along the axial direction have the locking mechanism 11, and both ends of the locking device 1 along the axial direction can be fixedly connected to the connecting device 2, thereby further improving the efficiency of disassembly and installation of the locking device 1, the clamping device 4, the connecting device 2 and the operating table 3.

[0066] In one embodiment, please refer to Figure 1 The connecting device 2 includes a tenon located on the side wall of the connecting device 2, and the column 12 has a mortise located on the side wall of the column 12.

[0067] In this embodiment of the application, when the connecting device 2 is fixedly connected to the locking device 1, the tenon and the mortise can be mortised and tenoned to improve the stability of the fixed connection between the connecting device 2 and the locking device 1.

[0068] In one embodiment, please refer to Figure 1 The clamping device 4 includes a support frame, a movable frame, an upper clamp, and a lower clamp. The support frame is fixedly connected to the connecting device 2, which is located axially away from the operating table 3 along the locking device 1. One end of the movable frame is rotatably connected to one end of the support frame, and the other end of the movable frame is connected to the upper clamp. The lower clamp is connected to the other end of the support frame, so that the upper clamp and the lower clamp can cooperate to clamp the sheet metal part 5.

[0069] After the positioning fixture clamps and positions the sheet metal part 5, an optical measuring instrument can be used to measure the dimensions of the sheet metal part 5, and the accuracy of the sheet metal part 5 can be judged based on the measurement results.

[0070] In the description of this application, the references to terms such as "in one embodiment," "in some embodiments," "in other embodiments," "in yet another embodiment," or "exemplary," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions 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 a suitable manner in any one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine the different embodiments or examples described in this application, as well as the features of the different embodiments or examples.

[0071] The above are merely preferred embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the protection scope of this application.

Claims

1. A positioning fixture, characterized in that, include: A locking device includes a column and a locking mechanism. The locking mechanism is disposed at one end of the column along the axial direction. The locking mechanism includes an operating component, a rotating shaft, and two intersecting limiting rods. The rotating shaft is disposed on the column. The position where the two limiting rods intersect is a first position. At the first position, both limiting rods are rotatably connected to the rotating shaft. Each limiting rod has an operating part and a locking part. The first position is located between the corresponding operating part and the corresponding locking part along the length direction of the limiting rod. The operating component is connected to the operating parts of the two limiting rods respectively to drive the two operating parts to move closer or further apart. A connecting device is provided at both ends of the locking device along the axial direction. The connecting device has a limiting cavity, and the locking part can extend into the limiting cavity so that both ends of the locking device along the axial direction can be fixedly connected to the corresponding connecting device respectively. An operating table, on which the connecting device is correspondingly provided; A clamping device is connected to the connecting device at the other end, and the clamping device is used to clamp sheet metal parts.

2. The positioning fixture according to claim 1, characterized in that, The operating component includes two rotatably connected movable rods. The position where the two movable rods are rotatably connected is the second position. The ends of the two movable rods opposite to the second position are respectively rotatably connected to the operating parts of the corresponding two limiting rods.

3. The positioning fixture according to claim 2, characterized in that, The operating component includes a locking lever, one end of which is rotatably connected to the movable lever at the second position.

4. The positioning fixture according to claim 3, characterized in that, The operating component includes a handle, and the side wall of the column along the extension direction of the handle has a limiting groove arranged along the axial direction of the column. The handle is connected to the locking rod, and the handle passes through the limiting groove. The handle can move along the limiting groove to drive the two operating parts to move closer or further apart from each other.

5. The positioning fixture according to claim 4, characterized in that, One end of the limiting groove along the axial direction of the column is in the locking position, the handle is located in the locking position, the handle abuts against the column, and the distance between the two operating parts is at its maximum.

6. The positioning fixture according to claim 5, characterized in that, The locking mechanism also includes an elastic reset member, one end of which is connected to the rotating shaft and the other end of which is connected to the handle. The elastic force of the elastic reset member can drive the handle to move to the locking position.

7. The positioning fixture according to any one of claims 1 to 6, characterized in that, The column has a clearance hole on its side wall along the arrangement direction of the two operating parts. When the two operating parts are far apart, the clearance hole can avoid the two operating parts.

8. The positioning fixture according to any one of claims 1 to 6, characterized in that, The locking mechanism is provided at both ends of the column along the axial direction.

9. The positioning fixture according to any one of claims 1 to 6, characterized in that, The connecting device has a boss, and two locking parts protrude from the corresponding limiting rods in opposite directions. When the locking parts of the two limiting rods enter the limiting cavity, the two locking parts can abut against the side of the boss near the limiting cavity, so that the locking device and the connecting device are fixedly connected.

Images