Positioning jig for hardness test of automobile seat headrest

Abstract

The utility model relates to a positioning jig for hardness test of an automobile seat headrest, which comprises a fixed bottom plate, a swing frame which is driven by a driving assembly to perform vertical swing adjustment is arranged on the fixed bottom plate, and a left clamping body and a right clamping body which perform left-right reciprocating translation adjustment through a sliding block and sliding rail moving pair are arranged on the swing frame. Positioning V-shaped grooves are formed in the left clamp body and the right clamp body, and fastening assemblies capable of adjusting the positions front and back are arranged on the positioning V-shaped grooves and used for fastening headrest rods placed in the positioning V-shaped grooves. According to the positioning jig for testing the hardness of the automobile seat headrest, the problem of difficulty in positioning caused by different distances, different diameters and different lengths of headrest rods of different styles of headrests can be solved in a certain size range, and different headrests can swing up and down to adjust the measurement angle.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of positioning fixture for the hardness test of automobile seat headrest, and it is related to the positioning fixture field of the hardness test of automobile seat headrest. BACKGROUND

[0002] With the vigorous development of automobile industry, consumers' comfort requirements for automobile seats are higher and higher. As a key component to protect the neck comfort and safety of drivers and passengers, the quality control of automobile seat headrest is crucial, and the hardness of headrest is one of the key parameters to determine comfort.

[0003] In the prior art, the hardness of automobile seat headrest can be tested by hardness testing instrument, but due to the special shape of automobile seat headrest, it is difficult to effectively and reasonably position the automobile seat headrest during hardness testing. For example, the headrest rod of the automobile seat headrest is difficult to position due to different spacing, diameter and length, and it is also difficult to adjust the up-down tilt angle of the headrest as needed during hardness testing, which makes it impossible to accurately measure the hardness of the headrest under actual stress conditions, and it is difficult to meet the quality control requirements of automobile manufacturers for high-quality headrests. This may lead to uneven quality of headrest products and affect user experience. Therefore, it is of great practical significance to study the positioning fixture for headrest hardness testing. SUMMARY

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by the utility model is to provide a positioning fixture for the hardness test of automobile seat headrest.

[0005] To solve the above technical problems, the technical scheme of the utility model is as follows: a positioning fixture for the hardness test of automobile seat headrest, comprising a fixed bottom plate, a swing frame driven by a drive assembly for up-down swing adjustment is arranged on the fixed bottom plate, a left clamping body and a right clamping body for left-right reciprocating translation adjustment are arranged on the swing frame through a sliding block sliding rail moving pair, a positioning V groove is arranged on each of the left and right clamping bodies, a fastening assembly capable of adjusting the position forward and backward is arranged on the positioning V groove to fasten the headrest rod placed in the positioning V groove.

[0006] Preferably, the upper surface of the fixed bottom plate is fixedly connected with a left support block and a right support block by screws, the top of each of the left and right support blocks is fixedly connected with a bearing seat by screws, a bearing is installed on each of the bearing seats, a rotating shaft is fixedly arranged at the middle of the left and right ends of the swing frame, and the rotating shaft is coaxially fixedly connected with the inner ring of the bearing on the same end side.

[0007] Preferably, a swing angle indicator is arranged on the end side of the swing frame.

[0008] Preferably, the swing angle indicator comprises a semicircular protractor, which is fixed on the outer end side of the left supporting block or the right supporting block, and the semicircular arc edge of the protractor faces downward, a rotating pointer is arranged on the middle top of the protractor, the rotating pointer is coaxially fixed on the rotating shaft of the same end side as a whole after the rotating pointer shaft penetrates through the through hole of the protractor, and the indicating tip of the rotating pointer faces the scale line of the semicircular arc edge of the protractor.

[0009] Preferably, the bearing on the bearing seat is an outer spherical surface ball bearing.

[0010] Preferably, the driving assembly is composed of a front driving assembly and a rear driving assembly, the front driving assembly is located between the swing frame and the front side of the fixed bottom plate, and the rear driving assembly is located between the swing frame and the rear side of the fixed bottom plate.

[0011] Preferably, the front driving assembly and the rear driving assembly each comprise a sleeve, the inner upper half and the inner lower half of the sleeve are each provided with an inner thread with opposite screw directions, a rod end joint bearing is screwed on each of the upper half and the lower half, the outer threaded rod of the rod end joint bearing is screwed with the corresponding inner thread of the sleeve, and the bearing inner ring of the rod end joint bearing is fixedly connected with a hinged shaft, the hinged shaft is fixed on a hinged support, and the hinged support is fixedly connected on the swing frame side and the upper surface of the fixed bottom plate by screws.

[0012] Preferably, the sliding block sliding rail moving pair comprises two sliding rails fixed on the swing frame, the sliding rails each extend leftward and rightward and are each provided with two sliding blocks, the left clamping body and the right clamping body are fixed on the corresponding sliding blocks by screws, and the sliding blocks are each screwed with a locking screw.

[0013] Preferably, the positioning V-shaped grooves are arranged on the top surfaces of the left and right clamping bodies, the locking assemblies each comprise an L-shaped adapter block, the adapter blocks are fixed on the side portions of the corresponding clamping bodies, and the adapter blocks are each screwed with a locking bolt located directly above the corresponding positioning V-shaped groove.

[0014] Preferably, the side portions of the left and right clamping bodies are each uniformly provided with a plurality of mounting inner thread holes in the front-rear direction, the adapter blocks are each provided with a mounting through hole, and the adapter blocks are locked in one of the mounting inner thread holes by the bolts penetrating through the mounting through holes.

[0015] Compared with the prior art, the positioning jig for hardness testing of an automobile seat headrest can solve the difficult positioning problem caused by different headrest rod spacings, different headrest rod diameters and different headrest rod lengths of different models of headrests within a certain size range, and can realize up-down swing adjustment and measurement of angles of different headrests.

[0016] The utility model will be further explained in detail in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The working state schematic view of the embodiment of the utility model.

[0018] Figure 2 The structure schematic view of the embodiment of the utility model.

[0019] Figure 3 The structure schematic of the swing frame Figure 1 .

[0020] Figure 4 The structure schematic of the swing frame Figure 2 .

[0021] Figure 5 The side view of Figure 4 .

[0022] In the drawing: fixed bottom plate 1, swing frame 2, left clamping body 3, right clamping body 4, positioning V groove 5, headrest rod 6, left supporting block 7, right supporting block 8, bearing seat 9, bearing 10, rotating shaft 11, protractor 12, rotating pointer 13, sleeve 14, rod end joint bearing 15, hinged support 16, slide rail 17, sliding block 18, tight screw 19, adapter block 20, locking bolt 21, mounting internal thread hole 22, bolt 23. DETAILED DESCRIPTION

[0023] The utility model will be further explained in combination with the drawings and embodiments.

[0024] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0025] It should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form, and in addition, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0026] As Figures 1-5As shown, the embodiment provides a positioning jig for hardness test of automobile seat headrest, which comprises a fixed bottom plate 1, the fixed bottom plate is provided with a swing frame 2 driven by a driving assembly to swing up and down for adjustment, which can meet the up and down swing adjustment of the angle of the headrest measuring point during the test, the swing frame is provided with a left clamping body 3 and a right clamping body 4 moving left and right reciprocatingly through a sliding block sliding rail moving pair, the left and right clamping bodies are both provided with a positioning V groove 5, and the positioning V grooves are both provided with a fastening assembly capable of adjusting the position forward and backward to fasten the headrest rod 6 placed in the positioning V groove.

[0027] The positioning V groove can adapt to headrest rod diameters of various styles within a certain size range.

[0028] In the embodiment of the utility model, the upper surface of the fixed bottom plate is fixedly connected with left and right support blocks 7 and 8 through screws, the top of the left and right support blocks is fixedly connected with a bearing seat 9 through a screw, the bearing seat is provided with a bearing 10, and the middle part of the left and right ends of the swing frame is fixedly provided with a rotating shaft 11, and the rotating shaft is coaxially fixedly connected with the bearing inner ring of the bearing on the same end side.

[0029] In the embodiment of the utility model, the end side of the swing frame is provided with a swing angle indicator to indicate the up and down swing adjustment angle.

[0030] In the embodiment of the utility model, the swing angle indicator comprises a semicircular protractor 12, the protractor is fixedly arranged on the outer end side of the left support block or the right support block, the semicircular arc side of the protractor faces downward, the middle top of the protractor is provided with a rotating pointer 13, the pointer rotating shaft of the rotating pointer is fixedly arranged on the same end side of the rotating shaft as a whole after penetrating through the through hole of the protractor, and the indicating tip of the rotating pointer faces the scale line of the semicircular arc side of the protractor.

[0031] In the embodiment of the utility model, the middle indicating value of the scale line is 0°, the indicating value range of the interval in front of the middle is 0~90°, and the indicating value range of the interval behind the middle is 0~-90°.

[0032] When the swing frame is adjusted to rotate up and down, the rotating pointer rotates along with it, so that the rotating angle can be observed more conveniently.

[0033] In the embodiment of the utility model, the bearing on the bearing seat is an outer spherical surface ball bearing.

[0034] In the embodiment of the utility model, the driving assembly is composed of a front driving assembly and a rear driving assembly, the front driving assembly is located between the front side of the swing frame and the fixed bottom plate, and the rear driving assembly is located between the rear side of the swing frame and the fixed bottom plate.

[0035] In the embodiment of the utility model, the front drive assembly and the rear drive assembly all include sleeve 14, the inside upper half section and the inside lower half section of sleeve are all provided with inner thread of opposite spiral, the upper and lower half section inner thread all are screwed with rod end joint bearing 15, the outer thread rod of rod end joint bearing all is screwed with the corresponding sleeve inner thread, the bearing inner ring of rod end joint bearing all is fixedly connected with articulated shaft, the articulated shaft all is solidly arranged on hinged support 16, the hinged support is fixedly connected on swing frame side portion and fixed bottom plate upper surface through screw.

[0036] When swing frame needs to swing up and down to adjust rotation angle, the sleeve of front drive assembly and rear drive assembly is rotated simultaneously, the rotation direction of sleeve of front drive assembly and rear drive assembly is opposite, can angle adjustment is carried out to whole headrest.

[0037] In the embodiment of the utility model, the sliding block sliding rail moving pair includes two sliding rails 17 fixedly arranged on swing frame, the sliding rail all extends left and right and is provided with two sliding blocks 18 on it, the left clamping body and the right clamping body all are fixedly connected on the corresponding sliding block through screw, the sliding block side portion all is screwed with set screw 19.

[0038] The left and right clamping bodies are adjusted according to the required distance between the two headrest rods, and when the required position is reached, the sliding blocks are fixed by the set screws, thereby solving the problem of different headrest rod distances.

[0039] In the embodiment of the utility model, the positioning V groove is arranged on the top surface of the left and right clamping bodies, and the locking assembly includes an L-shaped adapter block 20, the adapter block is fixedly connected to the side of the corresponding clamping body, and a locking bolt 21 is screwed to the top of the adapter block and located directly above the corresponding positioning V groove.

[0040] The locking bolt is fixed by hand, and the locking bolt is adjusted according to the height of the headrest rod to avoid the movement of the headrest during testing.

[0041] In the embodiment of the utility model, the side of the left and right clamping bodies is uniformly provided with a plurality of mounting inner thread holes 22 along the front and rear directions, and the adapter block is provided with a mounting through hole, and the bolt 23 is locked in one of the mounting inner thread holes by passing through the mounting through hole.

[0042] By changing the locking position of the adapter block in the mounting inner thread hole, the position of the locking bolt can be adjusted according to the length of the headrest rod.

[0043] In the embodiment of the utility model, the working principle of the positioning jig for hardness testing of the automobile seat headrest is as follows:

[0044] Adjust the position of the left and right clamping bodies so that the positioning V grooves of the left and right clamping bodies satisfy the distance between the two headrest rods, and then place the headrest rod in the positioning V groove and lock the set screw and the locking bolt.

[0045] When the angle measured by the headrest 24 needs to be adjusted, the sleeves of the front and rear driving assemblies are simultaneously rotated in opposite directions, so as to adjust the angle of the whole headrest. When the rotating angle is adjusted by up and down swinging of the swinging frame, the rotating pointer rotates, so that the rotating angle can be more conveniently observed.

[0046] The above is only the preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments. However, any simple modification, equivalent change and modification made to the above embodiments without departing from the technical content of the present application, and in accordance with the technical essence of the present application, still fall within the protection scope of the present application.

Claims

1. A positioning jig for rigidity testing of a headrest of an automobile seat, characterized by: Including fixed bottom plate, be provided with swing frame that is driven by drive assembly and is driven to swing up and down adjustment on the fixed bottom plate, be provided with left clamping body and right clamping body that are driven by slider rail moving pair and move left and right reciprocating translation adjustment on the swing frame, the left and right clamping body are all provided with positioning V groove, the positioning V groove is all provided with the fastening assembly that can adjust the position of front and back, to fasten the headrest rod placed in the positioning V groove.

2. The positioning jig for rigidity test of a headrest of an automobile seat according to claim 1, characterized in that: The upper surface of the fixed bottom plate is fixedly connected with left and right support blocks by screws, the top of the left and right support blocks is fixedly connected with a bearing seat by screws, the bearing seat is installed with a bearing, the middle part of the left and right ends of the swing frame is fixedly provided with a rotating shaft, and the rotating shaft is coaxially fixedly connected with the bearing inner ring of the bearing on the same side.

3. The positioning jig for rigidity test of headrest of car seat according to claim 2, characterized in that: The end side of the swing frame is provided with a swing angle indicator.

4. The positioning jig for rigidity test of a headrest of an automobile seat according to claim 3, characterized in that: The swing angle indicator includes a semicircular protractor, the protractor is fixedly arranged on the outer end side of the left support block or the right support block, the semicircular arc side of the protractor faces downward, a rotating pointer is arranged on the middle top of the protractor, the pointer shaft of the rotating pointer is coaxially fixedly arranged with the rotating shaft on the same side after penetrating through the through hole of the protractor, and the indicating tip of the rotating pointer faces the scale line of the semicircular arc side of the protractor.

5. The positioning jig for rigidity test of headrest of car seat according to claim 2, characterized in that: The bearing on the bearing seat is an outer spherical surface ball bearing.

6. The positioning jig for rigidity test of headrest of car seat according to claim 1, characterized in that: The drive assembly is composed of a front drive assembly and a rear drive assembly, the front drive assembly is located between the front side of the swing frame and the fixed bottom plate, and the rear drive assembly is located between the rear side of the swing frame and the fixed bottom plate.

7. The positioning jig for rigidity test of headrest of car seat according to claim 6, characterized in that: The front drive assembly and the rear drive assembly each include a sleeve, the inner upper half and the inner lower half of the sleeve are each provided with an inner thread with opposite screw directions, the upper and lower half inner threads are each screwed with a rod end joint bearing, the outer threaded rod of the rod end joint bearing is screwed with the corresponding sleeve inner thread, the bearing inner ring of the rod end joint bearing is fixedly connected with a hinged shaft, the hinged shaft is fixedly arranged on a hinged support, and the hinged support is fixedly connected to the side of the swing frame and the upper surface of the fixed bottom plate by screws.

8. The positioning jig for rigidity test of headrest of car seat according to claim 1, characterized in that: The slider rail moving pair includes two slide rails fixedly arranged on the swing frame, the slide rails each extend left and right and are each provided with two slide blocks, the left clamping body and the right clamping body are each fixedly connected to the corresponding slide block by screws, and the slide block side is screwed with a fastening screw.

9. The positioning jig for rigidity test of headrest of car seat according to claim 1, characterized in that: The positioning V groove is arranged on the top surface of the left and right clamping bodies, and the fastening assembly includes an L-shaped adapter block, the adapter block is fixedly connected to the side of the corresponding clamping body, and the top of the adapter block is screwed with a locking bolt located directly above the corresponding positioning V groove.

10. The positioning jig for rigidity test of a headrest of an automobile seat according to claim 9, characterized in that: The side of the left and right clamping bodies is uniformly distributed with a plurality of mounting inner threaded holes along the front and back directions, the adapter block is provided with a mounting through hole, and the bolt penetrating through the mounting through hole is locked in one of the mounting inner threaded holes.

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