A manual locking positioning mechanism

Abstract

The application provides a manual locking positioning mechanism, comprising a base and a positioning part. The base is arranged on a rack. The positioning part is arranged on the base and comprises a mounting block, a control handle part, a guide part and a positioning pin. The mounting block is fixed on the base. The guide part comprises a cylinder, a guide rod, a lower bottom plate and an upper bottom plate. The lower bottom plate is arranged on the mounting block and is provided with a through hole. The guide rod is slidingly fitted in the through hole of the cylinder and the bottom plate. The upper bottom plate is connected with the upper end of the guide rod. The control handle part is arranged between the mounting block and the guide rod and controls the up-and-down sliding of the guide rod. The positioning pin is arranged on the upper bottom plate. The manual locking positioning mechanism can solve the problems of high difference requirement, poor positioning precision and frequent replacement of different vehicle parts in the prior art for realizing the positioning of parts of multiple vehicle types and designing a quick clamping mechanism on a precision positioning rack.

Description

Technical Field

[0001] This invention relates to the field of automotive body-in-white precision positioning rack development, and more particularly to a manually locking positioning mechanism. Background Technology

[0002] Currently, in the development of precision positioning racks for body-in-white, fixed positioning mechanisms are typically used to position parts. When multiple models of the same type require precision positioning racks, the racks need to be moved frequently, and air cannot be vented to switch the positioning mechanisms. Therefore, multiple dedicated precision positioning racks need to be developed. However, the positioning mechanisms in dedicated precision positioning racks are fixed, and the development cost of dedicated precision positioning racks is high, the racks occupy a large area on site, and the switching time for racks is very wasteful. Summary of the Invention

[0003] The purpose of this invention is to provide a manual locking positioning mechanism to solve the technical problems of high development cost, large site area occupation, and large time waste when switching traditional dedicated precision positioning racks.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a manually locking positioning mechanism, the manually locking positioning mechanism comprising:

[0005] A base, which is mounted on a material rack;

[0006] The positioning part is disposed on the base and includes a mounting block, a control handle, a guide, and a positioning pin. The mounting block is fixed to the base. The guide includes a cylinder, a guide rod, a lower base plate, and an upper base plate. The lower base plate is disposed on the mounting block and has a through hole. The guide rod is slidably fitted into the cylinder and the through hole of the base plate. The upper base plate is connected to the upper end of the guide rod. The control handle is disposed between the mounting block and the guide rod and controls the guide rod to slide up and down. The positioning pin is disposed on the upper base plate.

[0007] In one embodiment, the control handle portion includes:

[0008] A handle, one end of which is hinged to the mounting block;

[0009] A first connecting block, one end of which is hinged to the handle, and the other end of which is hinged to the end of the guide rod.

[0010] In one embodiment, the control handle further includes a locking pin. When the control handle controls the positioning pin to extend, a pin hole is provided at the overlapping position of the first connecting block and the handle, and the locking pin is inserted into the pin hole.

[0011] In one embodiment, the locking pin is inserted into a pin hole on the first connecting block, and an elastic element is provided on the side of the first connecting block away from the handle. One end of the elastic element is connected to the locking pin, and the other end of the elastic element is connected to the first connecting block. The elastic element is in a stretched state, and the elastic element provides the locking pin with an elastic force toward the handle.

[0012] In one embodiment, the guide portion includes three guide rods.

[0013] In one embodiment, the manual locking positioning mechanism includes two sets of positioning parts, and each positioning part further includes an offset part. The offset part is disposed on the upper base plate, and the positioning pin is disposed at the upper end of the offset part. The offset part is used to bring the positioning pins in the two positioning parts closer to each other.

[0014] In one embodiment, the biasing portion includes:

[0015] The second connecting block is fixed to the upper base plate by a threaded component, and the second connecting block extends outward toward the edge of the upper base plate;

[0016] A third connecting block, which is fixed to the second connecting block;

[0017] The fourth connecting block is in the shape of an inverted L. The vertical section of the fourth connecting block is fixed to the third connecting block. The horizontal section of the fourth connecting block extends toward another positioning part. The positioning pin is located at the end of the fourth connecting block.

[0018] In one embodiment, the biasing portion further includes a reference pin disposed between the second connecting block and the upper base plate.

[0019] In one embodiment, the positioning pin includes a conical head at the upper end and a cylindrical mounting portion connected to the conical head, the cylindrical mounting portion of the positioning pin being fixed to the fourth connecting block.

[0020] In one embodiment, the base is connected to the rack via a threaded connection.

[0021] The above-described technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0022] The manual locking positioning mechanism provided in this invention uses a base to fix the positioning part to the material rack. When positioning is required, the guide rod in the guide part is driven by the control handle to slide upward, thereby causing the upper base plate connected to the top of the guide rod to move upward, and then causing the positioning pin on the upper base plate to move upward to the extended position. Similarly, the guide rod in the guide part can be driven by the control handle to slide downward, thereby causing the positioning pin to move downward to the retracted position. Therefore, multiple manual locking positioning mechanisms can be set on the material rack to adapt to the positioning of parts of different car models. When a part does not need to be positioned at a certain position, the positioning pin at that position can be moved downward to the retracted position by controlling the handle, thus avoiding the positioning pin at that position from obstructing the normal positioning of the part. Therefore, when positioning parts of different car models, the position of the positioning pin in each manual locking positioning mechanism can be adjusted by controlling the handle, without disassembling the moving positioning mechanism or switching the material rack, improving the efficiency of part positioning, realizing that one material rack is suitable for positioning parts of multiple different car models, and solving the problems of large space occupation and high manufacturing cost of multiple dedicated positioning frames.

[0023] The manual locking positioning mechanism in this application eliminates the need for disassembly and movement when positioning parts of the same vehicle model, ensuring its positioning accuracy. Furthermore, since the up-and-down movement of the positioning pin in this manual locking positioning mechanism is guided by a guide section, positioning accuracy is further guaranteed. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the manual locking positioning mechanism provided in an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of a manually locking positioning mechanism provided in another embodiment of the present invention;

[0027] Figure 3 To be Figure 2 A schematic diagram of the structure after the positioning part on the left side has been adjusted to the retracted position;

[0028] Figure 4 for Figure 3 A schematic diagram of the structure of the manually locking positioning mechanism after positioning the part.

[0029] The labels for the various figures are as follows:

[0030] 1. Base; 2. Positioning part; 3. Part; 21. Mounting block; 22. Control handle part; 23. Guide part; 24. Positioning pin; 25. Offset part; 221. Handle; 222. First connecting block; 223. Locking pin; 231. Cylinder body; 232. Guide rod; 233. Lower base plate; 234. Upper base plate; 251. Second connecting block; 252. Third connecting block; 253. Fourth connecting block; 254. Reference pin. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 invention 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 invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] Please see Figures 1 to 4This application provides a manually locking positioning mechanism, including a base 1 and a positioning part 2. The base 1 is mounted on a material rack (the base 1 can be fixed to the material rack using threaded fittings). The positioning part 2 is mounted on the base 1 and includes a mounting block 21, a control handle part 22, a guide part 23, and a positioning pin 24. The mounting block 21 is fixed to the base 1. The guide part 23 includes a cylinder 231, a guide rod 232, a lower base plate 233, and an upper base plate 234. The lower base plate 233 is mounted on the mounting block 21 and has a through hole. The guide rod 232 slides within the through hole of the cylinder 231 and the base plate. The upper base plate 234 is connected to the upper end of the guide rod 232. The control handle part 22 is located between the mounting block 21 and the guide rod 232, and controls the guide rod 232 to slide up and down. The positioning pin 24 is located on the upper base plate 234.

[0036] The manual locking positioning mechanism provided in this embodiment uses the base 1 to fix the positioning part 2 to the material rack. When positioning is required, the control handle part 22 is used to drive the guide rod 232 in the guide part 23, so that the guide rod 232 slides upward, thereby causing the upper base plate 234 connected to the top of the guide rod 232 to move upward, and then causing the positioning pin 24 set on the upper base plate 234 to move upward to the extended position. Similarly, the guide rod 232 inside the guide section 23 can be driven by the control handle 22 to slide downward, thereby causing the positioning pin 24 to move downward to the retracted position. Therefore, multiple manual locking positioning mechanisms can be set on the material rack to adapt to the positioning of parts 3 of different models. When a certain position of part 3 does not need to be positioned, the positioning pin 24 at that position can be moved downward to the retracted position by controlling the handle 22, thus avoiding the positioning pin 24 at that position from obstructing the normal positioning of part 3. Therefore, when positioning parts 3 of different models, the position of the positioning pin 24 in each manual locking positioning mechanism can be adjusted by controlling the handle 22, without disassembling the moving positioning mechanism or switching the material rack, thereby improving the positioning efficiency of part 3 and realizing that one material rack is suitable for positioning parts 3 of multiple different models, solving the problems of large space occupation and high manufacturing cost of multiple dedicated positioning frames.

[0037] The manual locking positioning mechanism in this application eliminates the need for disassembly and movement when positioning parts 3 of the same vehicle model (traditional positioning mechanisms require frequent disassembly and repositioning, which not only consumes a lot of labor time, but also compromises positioning accuracy after multiple repositionings), thus ensuring the positioning accuracy of the manual locking positioning mechanism. Furthermore, since the up-and-down movement of the positioning pin 24 in this application's manual locking positioning mechanism is guided by the guide portion 23, the positioning accuracy is further guaranteed.

[0038] In one embodiment, the control handle 22 includes a handle 221 and a first connecting block 222. One end of the handle 221 is hinged to the mounting block 21. One end of the first connecting block 222 is hinged to the handle 221, and the other end of the first connecting block 222 is hinged to the end of the guide rod 232. When control is required and the positioning pin 24 moves upward to the extended position, simply pull the handle 221 upward. This causes the handle 221 to drive the guide rod 232 to slide upward within the cylinder 231 via the first connecting block 222. This, in turn, causes the guide rod 232 to drive the upper base plate 234, causing the positioning pin 24 on the upper base plate 234 to move upward to the extended position (e.g., ...). Figure 3 As shown, the positioning pin 24 in the left positioning part 2 is in the retracted position, and the positioning pin 24 in the right positioning part 2 is in the extended position. When it is necessary to move the positioning pin 24 downward to the retracted position, simply pull the handle 221 downward. The control handle part 22 in this embodiment has a simple and reliable structure, and can conveniently and quickly switch the position state of the positioning pin 24.

[0039] In one embodiment, the control handle portion 22 further includes a locking pin 223. When the control handle portion 22 controls the positioning pin 24 to extend, a pin hole is provided at the overlapping position of the first connecting block 222 and the handle 221, and the locking pin 223 is inserted into and fitted into the pin hole. Figure 1 As shown, when the positioning pin 24 in the positioning part 2 is in the extended state, in order to prevent the positioning part 2 from changing arbitrarily, a locking pin 223 is provided between the first connecting block 222 and the handle 221. The locking pin 223 is used to lock the handle 221 to prevent the handle 221 from moving (this can prevent the worker from accidentally touching the handle 221 when positioning the part 3, which would cause the position of the positioning pin 24 to change and affect the positioning accuracy). This keeps the positioning pin 24 in the extended state so as to facilitate the positioning of the part 3.

[0040] In one embodiment, the locking pin 223 is inserted into a pin hole fitted on the first connecting block 222, and an elastic element is provided on the side of the first connecting block 222 away from the handle 221. One end of the elastic element is connected to the locking pin 223, and the other end is connected to the first connecting block 222. The elastic element is in a stretched state, and it provides an elastic force to the locking pin 223 toward the handle 221. By providing the elastic element, the locking pin 223 has a tendency to move toward the handle 221. When the worker pulls the handle 221 until the positioning pin 24 is in the extended state (e.g., when the worker pulls the handle 221 until the positioning pin 24 is in the extended state), the locking pin 223 will move toward the handle 221. Figure 1 (as shown in the figure) At this time, under the action of the elastic force of the elastic element, the locking pin 223 can be automatically inserted into the pin hole of the handle 221 to realize the automatic locking of the handle 221.

[0041] In one embodiment, the guide portion 23 includes three guide rods 232. The bottoms of the three guide rods 232 can be connected by a horizontal connecting plate, and the first connecting block 222 can be hinged to the horizontal connecting plate. By setting three guide rods 232 to guide simultaneously, the guidance of three guide rods is more accurate than that of a single guide rod (avoiding the phenomenon of inaccurate positioning of the positioning pin 24 due to the wobbling of a single guide rod), thereby improving the positioning accuracy of the positioning pin 24.

[0042] Because the spacing between the positioning holes of part 3 may be relatively small for different vehicle models, the distance is insufficient to accommodate two sets of manually locking positioning mechanisms. To solve the above problem, such as Figure 2-4 In one embodiment, the manually locking positioning mechanism includes two sets of positioning parts 2, and each positioning part 2 further includes an offset part 25. The offset part 25 is disposed on the upper base plate 234, and the positioning pin 24 is disposed on the upper end of the offset part 25. The offset part 25 is used to bring the positioning pins 24 in the two positioning parts 2 closer together. By setting the offset part 25, the positioning pins 24 in the two sets of positioning parts 2 are brought close to each other, and the movement of the two sets of positioning parts 2 does not interfere with each other, thereby realizing the positioning of different vehicle parts 3 with small positioning hole spacing.

[0043] In one embodiment, the biasing portion 25 includes a fourth connecting block 253, a third connecting block 252, and a second connecting block 251. The second connecting block 251 is fixed to the upper base plate 234 by a threaded connection and extends outward toward the edge of the upper base plate 234. The third connecting block 252 is fixed to the second connecting block 251. The fourth connecting block 253 is an inverted L-shape. The vertical segment of the fourth connecting block 253 is fixed to the third connecting block 252, and the horizontal segment of the fourth connecting block 253 extends toward another positioning portion 2. A positioning pin 24 is disposed at the end of the fourth connecting block 253. The second connecting block 251 biases the positioning pin 24 toward the edge of the upper base plate 234, while the third connecting block 252 connects the fourth connecting block 253 to the second connecting block 251. The fourth connecting block 253 biases the positioning pin 24 between the two sets of positioning portions 2, thereby shortening the distance between the positioning pins 24 of the two sets of positioning portions 2.

[0044] In one embodiment, the biasing portion 25 further includes a reference pin 254, which is disposed between the second connecting block 251 and the upper base plate 234. The reference pin 254 can position the second connecting block 251, improving the accuracy of the installation position of the second connecting block 251, thereby improving the installation accuracy of the biasing portion 25 and the positioning pin 24.

[0045] In one embodiment, the positioning pin 24 includes a conical head at the upper end and a cylindrical mounting portion connected to the conical head. The cylindrical mounting portion of the positioning pin 24 is fixed to the fourth connecting block 253. When the part 3 is fitted onto the positioning pin 24, the conical head of the positioning pin 24 can serve as a guide, so that the positioning hole of the part 3 can fit onto the positioning pin 24 for positioning.

[0046] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A manually locking positioning mechanism, characterized in that, The manual locking positioning mechanism includes: A base, which is mounted on a material rack; A positioning part, disposed on the base, includes a mounting block, a control handle, a guide, and a positioning pin; the mounting block is fixed to the base; the guide includes a cylinder, a guide rod, a lower base plate, and an upper base plate, the lower base plate is disposed on the mounting block, and the lower base plate has a through hole, the guide rod is slidably fitted into the cylinder and the through hole of the base plate, and the upper base plate is connected to the upper end of the guide rod; the control handle is disposed between the mounting block and the guide rod, and the control handle controls the guide rod to slide up and down; the positioning pin is disposed on the upper base plate; The manual locking positioning mechanism includes two sets of positioning parts, and each positioning part further includes an offset part. The offset part is disposed on the upper base plate, and the positioning pin is disposed at the upper end of the offset part. The offset part is used to bring the positioning pins in the two positioning parts closer to each other. The biasing portion includes: The second connecting block is fixed to the upper base plate by a threaded component, and the second connecting block extends outward toward the edge of the upper base plate; A third connecting block, which is fixed to the second connecting block; The fourth connecting block is in the shape of an inverted L. The vertical section of the fourth connecting block is fixed to the third connecting block, and the horizontal section of the fourth connecting block extends toward another positioning part. The positioning pin is located at the end of the fourth connecting block. By setting an offset part, the positioning pins in the two sets of positioning parts are brought close to each other, and the movement of the two sets of positioning parts does not interfere with each other, thus realizing the positioning of different vehicle parts with small positioning hole spacing.

2. The manually locking positioning mechanism according to claim 1, characterized in that, The control handle includes: A handle, one end of which is hinged to the mounting block; A first connecting block, one end of which is hinged to the handle, and the other end of which is hinged to the end of the guide rod.

3. The manually locking positioning mechanism according to claim 2, characterized in that: The control handle also includes a locking pin. When the control handle controls the positioning pin to extend, a pin hole is provided at the overlapping position of the first connecting block and the handle, and the locking pin is inserted into the pin hole.

4. The manually locking positioning mechanism according to claim 3, characterized in that: The locking pin is inserted into the pin hole on the first connecting block, and an elastic element is provided on the side of the first connecting block away from the handle. One end of the elastic element is connected to the locking pin, and the other end of the elastic element is connected to the first connecting block. The elastic element is in a stretched state, and the elastic element provides the locking pin with an elastic force toward the handle.

5. A manually locking positioning mechanism according to claim 1, characterized in that: The guide section includes three guide rods.

6. The manually locking positioning mechanism according to claim 1, characterized in that: The biasing part further includes a reference pin, which is disposed between the second connecting block and the upper base plate.

7. A manually locking positioning mechanism according to claim 1, characterized in that: The positioning pin includes a conical head at the upper end and a cylindrical mounting part connected to the conical head, and the cylindrical mounting part of the positioning pin is fixed to the fourth connecting block.

8. A manually locking positioning mechanism according to claim 1, characterized in that: The base is connected to the material rack via a threaded component.

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