A headrest contour detection device

Abstract

This invention discloses a headrest contour detection device, relating to the field of automotive seat inspection technology. It includes: a mobile trolley with a detection mechanism base plate mounted on it; a headrest rod positioning assembly for positioning the headrest rods installed on the base plate; and a headrest contour detection mechanism detachably mounted on the base plate. The headrest rod positioning assembly includes a positioning bracket for Y-axis positioning, a quick clamp for X-axis positioning, and a pin for Z-axis positioning. The headrest contour detection mechanism includes a lower contour detection mechanism and an upper contour detection mechanism. By measuring the gap between the outer surface of the headrest and the inner wall of the detection cavity using a go / no-go gauge or feeler gauge, the conformity of the headrest's contour can be determined. This invention can sequentially inspect the contours of multiple components such as the headrest skin, foam, and frame, offering strong applicability, convenient switching, and recyclable main structure, significantly reducing inspection costs and meeting the rapid quality control needs of mass production.

Description

Technical Field

[0001] This invention relates to the field of automotive seat inspection technology, and more particularly to a headrest contour inspection device. Background Technology

[0002] In the automotive seat manufacturing process, the headrest, as a crucial safety and comfort component, directly impacts the overall assembly quality and performance of the chair due to the dimensional accuracy of its shape, mounting holes, internal foam, and frame. Current headrest inspections often focus only on the installation performance or local dimensions of the headrest rod, lacking comprehensive inspection methods for multiple components including the headrest's overall shape, foam layer, frame, and headrest rod. Furthermore, traditional inspection methods rely heavily on coordinate measuring machines (CMMs), which are costly, inefficient, and unsuitable for rapid sampling inspections in mass production.

[0003] Therefore, there is an urgent need for a headrest contour detection device that is compact in structure, easy to operate, and highly applicable. Summary of the Invention

[0004] To address the aforementioned problems in the prior art, this invention provides a headrest contour detection device that can detect the external contour of the headrest body and multiple internal components, thereby improving detection efficiency and equipment utilization. This solves the problem that the prior art cannot comprehensively detect the size, shape, etc. of the headrest.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A headrest contour detection device includes: a mobile trolley, on which a detection mechanism base plate is mounted, a headrest rod positioning assembly for positioning a headrest rod is mounted on the detection mechanism base plate, and a headrest contour detection mechanism is detachably mounted on the detection mechanism base plate; the headrest rod positioning assembly includes a positioning bracket for Y-axis positioning, a quick clamp for X-axis positioning, and a pin for Z-axis positioning; the headrest contour detection mechanism includes a lower contour detection mechanism and an upper contour detection mechanism.

[0006] As a preferred embodiment of the present invention, the positioning bracket includes a first positioning bracket and a second positioning bracket; the first positioning bracket is provided with a first slot that matches the diameter of the headrest rod, and the second positioning bracket is provided with a second slot that is wider than the diameter of the headrest rod.

[0007] As a preferred embodiment of the present invention, the quick clamp secures the headrest bar to the positioning bracket.

[0008] As a preferred embodiment of the present invention, the pin engages with the headrest rod locking groove, and at least one pin is fitted with a spring to achieve elastic locking.

[0009] As a preferred embodiment of the present invention, the quick clamp is provided with a rubber head that flexibly contacts the headrest bar.

[0010] As a preferred embodiment of the present invention, the quick clamp and the lower part of the pin are provided with a first support base.

[0011] As a preferred embodiment of the present invention, at least two of the first and second positioning brackets are provided and arranged at intervals on the left and right.

[0012] As a preferred embodiment of the present invention, the upper contour detection mechanism is fixed to the bottom plate of the detection mechanism by a second support base, and the second support base is provided with a locking switch for locking the upper contour detection mechanism.

[0013] As a preferred embodiment of the present invention, the upper contour detection mechanism is provided with a handle for easy disassembly and assembly.

[0014] As a preferred embodiment of the present invention, the lower part of the mobile trolley is provided with four moving wheels and a storage plate; the bottom plate of the detection mechanism is provided with a handle and a reference surface for three-coordinate detection.

[0015] By adopting the above-described technical solution, the beneficial effects of the present invention compared with the prior art are as follows: (1) A headrest contour detection device of the present invention has multiple functions and integrated detection: it can not only detect the outer contour of the headrest body, but also detect the outer contour of parts such as foam, frame, and headrest rod in sequence, realizing multiple uses of one device, and can perform multi-part detection on the same type of headrest without changing the detection mechanism; (2) The headrest contour detection device of the present invention has strong applicability: by replacing the headrest contour detection mechanism, it can adapt to the detection requirements of different headrests, and the remaining components (moving trolley, base plate, positioning reference component, locking structure) can be recycled, effectively reducing costs; (3) The headrest contour detection device of the present invention is convenient and efficient to operate: it has a compact structure, quick switching, and can quickly determine the size deviation without the need for a coordinate measuring machine, which is suitable for mass production quality control. (4) The headrest contour detection device of the present invention has controllable detection accuracy: the detection gap is detected by using a go / no-go gauge or feeler gauge, which is intuitive and reliable; at the same time, the three coordinate detection reference plane is retained to meet the high-precision measurement requirements. Attached Figure Description

[0016] Other objects and results of the invention will become more apparent and readily understood with reference to the following description taken in conjunction with the accompanying drawings. In the drawings: Figure 1 This is a perspective view of an example of the present invention; Figure 2 This is a side view of an example of the present invention; Figure 3 This is another side view of an embodiment of the present invention; Figure 4 This is a top view of an example of the present invention; Figure 5 This is a three-dimensional view of a partial structure of an example of the present invention; Figure 6 This is a perspective view of an example application of the present invention; The reference numerals in the accompanying drawings include: 1. mobile trolley; 2. detection mechanism base plate; 3. headrest rod positioning assembly; 4. headrest contour detection mechanism; 5. first support base; 11. moving wheel; 12. storage plate; 21. handle; 22. reference surface; 31. positioning bracket; 32. quick clamp; 33. pin; 311. first positioning bracket; 312. second positioning bracket; 3111. first slot; 3121. second slot; 321. rubber head; 41. lower contour detection mechanism; 42. upper contour detection mechanism; 43. second support base; 421. handle; 431. locking switch. Detailed Implementation

[0017] The technical solutions of various embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal communication between two components. It should be pointed out that all accompanying drawings are exemplary representations. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0021] Reference Figures 1 to 6 , Figure 1This is a perspective view of an example of the present invention. Figure 2 This is a side view of an example of the present invention. Figure 3 This is another side view of an example of the present invention. Figure 4 This is a top view of an example of the present invention. Figure 5 This is a perspective view of a partial structure of the present invention (excluding the upper contour detection mechanism). Figure 6 This is a perspective view of an application of the present invention (with a test headrest installed). The present invention provides a headrest contour detection device for batch sampling inspection of headrests, including a mobile cart 1, a detection mechanism base plate 2, a headrest rod positioning assembly 3, and a headrest contour detection mechanism 4. The mobile cart 1 has four moving wheels 11 and a storage plate 12 at its lower part. The moving wheels 11 can be universal wheels, and the storage plate 12 is used to store parts, tools, etc. The detection mechanism base plate 2 is set on the upper surface of the mobile cart 1, and the detection mechanism base plate 2 is provided with a handle 21 for convenient movement and a reference surface 22 for three-coordinate measurement.

[0022] The headrest rod positioning assembly 3 is installed on the base plate 2 of the detection mechanism and is used to position the headrest rod. The headrest rod positioning assembly 3 includes a positioning bracket 31 for Y-axis positioning, a quick clamp 32 for X-axis positioning, and a pin 33 for Z-axis positioning. The positioning bracket 31 includes a first positioning bracket 311 and a second positioning bracket 312. At least two of each of the first positioning bracket 311 and the second positioning bracket 312 are provided and arranged at left and right intervals. The first positioning bracket 311 is provided with a first slot 3111 that matches the diameter of the headrest rod, and the second positioning bracket 312 is provided with a wider... The second slot 3121 is located at the diameter of the headrest rod. The distance between the first slot 3111 and the second slot 3121 is slightly larger than the distance between the two headrest rods to accommodate the error range of the headrest rods. The slot can be set as a U-shaped slot, a rectangular slot, or a semi-circular slot. The quick clamp 32 fastens the headrest rod to the positioning bracket 31. The quick clamp 32 is provided with a rubber head 321 that flexibly contacts the headrest rod. The pin 33 engages with the locking slot of the headrest rod. At least one pin 33 is fitted with a spring (not shown) to achieve elastic locking. The quick clamp 32 and the pin 33 are provided with a first support base 5 at the bottom.

[0023] The headrest contour detection mechanism 4 is detachably mounted on the detection mechanism base plate 3. The headrest contour detection mechanism 4 includes a lower contour detection mechanism 41 and an upper contour detection mechanism 42. The upper contour detection mechanism 42 is fixed to the detection mechanism base plate 2 by a second support base 43. The second support base 43 is provided with a locking switch 431 for locking the upper contour detection mechanism 42. The upper contour detection mechanism 42 is provided with a handle 421 for easy disassembly and assembly.

[0024] The following will refer to Figures 1 to 6 The working principle of this invention will be explained.

[0025] When using, first install the lower contour detection mechanism 41, then put the headrest rod into the first slot 3111 and the second slot 3121, use the quick clamp 32 to press the headrest rod tightly, and then insert the pin 33 into the locking groove of the headrest rod. Under the action of the spring, it will automatically lock to prevent Z-direction movement, thus completing the fixation of the headrest.

[0026] During testing, after fixing the headrest, lower and lock the upper contour detection mechanism 42 so that the headrest is completely inside the detection cavity, forming a detection gap of approximately 3-5mm between the outer surface of the headrest and the inner wall of the detection cavity. Use a go / no-go gauge (such as a 3mm diameter go gauge or a 5mm diameter no-go gauge) or a feeler gauge to slide around the circumference of the detection gap. If it can pass smoothly without obvious jamming or excessive gap, the headrest's contour is considered to be qualified.

[0027] For the same headrest, if the part with the skin fails the test, the skin can be removed, and the shape of the headrest foam can be tested again using the same testing agency; if it still fails, the headrest frame can be further tested. No tooling changes are required, allowing for sequential testing of multiple components.

[0028] When testing a different headrest model, simply release the locking switch, remove the original lower contour detection mechanism 41 and upper contour detection mechanism 42, and replace them with the headrest contour detection mechanism 4 that matches the new model. All other components remain unchanged, allowing for quick switching. This mechanism has a compact structure, occupies little space, and can be operated by a single person, making it suitable for batch testing alongside the production line.

[0029] This invention discloses a headrest contour detection device, which is a multi-functional integrated detection system. It can not only detect the outer contour of the headrest body, but also sequentially detect the outer contours of other parts such as foam, frame, and headrest rod, achieving multi-purpose functionality. Multiple parts of the same model of headrest can be inspected without changing the detection mechanism. It is highly adaptable: by changing the headrest contour detection mechanism, it can adapt to the detection needs of different headrests. The remaining components (moving carriage, base plate, positioning reference component, locking structure) can be recycled, effectively reducing costs. Operation is convenient and efficient: the compact structure and quick switching allow for rapid determination of dimensional deviations without the need for a coordinate measuring machine, making it suitable for batch production quality control. Detection accuracy is controllable: the detection gap is checked using go / no-go gauges or feeler gauges, providing a direct and reliable measurement. Simultaneously, it retains the coordinate measuring machine's detection reference surface, accommodating high-precision measurement requirements.

[0030] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A headrest contour detection device, characterized in that, include: A mobile trolley is provided with a detection mechanism base plate. A headrest rod positioning assembly for positioning the headrest rod is installed on the detection mechanism base plate. A headrest contour detection mechanism is detachably installed on the detection mechanism base plate. The headrest rod positioning assembly includes a positioning bracket for Y-axis positioning, a quick clamp for X-axis positioning, and a pin for Z-axis positioning. The headrest contour detection mechanism includes a lower contour detection mechanism and an upper contour detection mechanism.

2. The headrest contour detection device according to claim 1, characterized in that, The positioning bracket includes a first positioning bracket and a second positioning bracket; the first positioning bracket is provided with a first slot that matches the diameter of the headrest rod, and the second positioning bracket is provided with a second slot that is wider than the diameter of the headrest rod.

3. The headrest contour detection device according to claim 1, characterized in that, The quick clamp secures the headrest bar to the positioning bracket.

4. The headrest contour detection device according to claim 1, characterized in that, The pin engages with the headrest rod locking groove, and at least one pin is fitted with a spring to achieve elastic locking.

5. A headrest contour detection device according to claim 1, characterized in that, The quick clamp is equipped with a rubber head that flexibly contacts the headrest bar.

6. The headrest contour detection device according to claim 1, characterized in that, The quick clamp and pin are provided with a first support base at their lower part.

7. A headrest contour detection device according to claim 2, characterized in that, At least two of each of the first and second positioning brackets are provided and arranged at intervals on the left and right.

8. A headrest contour detection device according to claim 1, characterized in that, The upper contour detection mechanism is fixed to the bottom plate of the detection mechanism by a second support base, and the second support base is provided with a locking switch for locking the upper contour detection mechanism.

9. A headrest contour detection device according to claim 1, characterized in that, The upper contour detection mechanism is equipped with a handle for easy disassembly and assembly.

10. A headrest contour detection device according to claim 1, characterized in that, The mobile trolley is equipped with four wheels and a storage plate at the bottom; the detection mechanism has a handle and a reference surface for coordinate measuring machine detection on its base plate.

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