Test fixture

Abstract

The utility model relates to the technical field of test fixtures, and provides a test fixture, which comprises a base used for placing a wearable device, and a knob of the wearable device faces a first side of the base; part of the supporting part is connected to the side wall, facing the first side, of the base, and the other part of the supporting part extends towards the space above the base; the connecting part is located on at least one side of the supporting part and located in the space above the base; and the pulley is rotatably connected to the connecting part, the periphery of the pulley abuts against the knob, and the rotation of the pulley can drive the knob to rotate synchronously. According to the test fixture provided by the embodiment of the invention, in the test process, the rotating force of the knob on the wearable equipment can be determined by adjusting the magnitude of the force applied to the pulley, and the defects of the wearable equipment caused by poor rotating performance of the knob are effectively identified and intercepted, so that the wearable equipment with higher quality and reliability is provided for consumers.

Description

Technical Field

[0001] The present application relates to the technical field of test fixtures, and in particular to a test fixture. Background Art

[0002] In the design and manufacturing of consumer electronics, especially high-end wearables like smart glasses, intuitive user interfaces and smooth operation are crucial to enhancing product competitiveness. Knobs, as common interactive components, not only provide intuitive control but also often carry important functions such as adjusting functions, turning devices on and off, or adjusting settings.

[0003] However, in actual production, due to the properties of materials, the complexity of the manufacturing process, and slight errors in the assembly process, it is often difficult to achieve completely consistent performance of knobs in end products. Specifically, the tightness and smoothness of the knob's rotation are affected by a variety of factors, including manufacturing tolerances, material friction coefficients, assembly accuracy, and usage environment. The cumulative effect of these factors may lead to significant differences in the rotation experience of knobs in products from the same batch. For example, some knobs may feel heavy and stuck when rotated due to over-tight assembly, while others may experience unstable rotation and easy shaking due to over-loose assembly. To make things more complicated, there may be inconsistent rotation force between multiple knobs on the same device, which greatly affects the user's overall experience. Utility Model Content

[0004] An embodiment of the present application provides a test fixture for detecting the rotation force of a knob on a wearable device, so as to solve the problem of inconsistent rotation force between multiple knobs on the same device.

[0005] This embodiment provides a test fixture, which includes:

[0006] a base, for placing the wearable device, wherein the knob of the wearable device faces the first side of the base;

[0007] a support portion, partially connected to the side wall of the base facing the first side, and another portion extending toward the upper space of the base;

[0008] a connecting portion located on at least one side of the supporting portion and located in the space above the base; and

[0009] A pulley is rotatably connected to the connecting portion, an outer periphery of the pulley abuts against the knob, and the rotation of the pulley can drive the knob to rotate synchronously.

[0010] According to the test fixture provided in this embodiment, a boss is provided on one side of the pulley. The test fixture further includes a rope body and at least one counterweight. The rope body is arranged around the circumference of the boss. The counterweight is used to be arranged at the end of the rope body to drive the pulley to rotate.

[0011] According to the test fixture provided in this embodiment, the boss includes an annular boss, a rope groove is formed on the circumference of the annular boss, and the rope body is reciprocated along the rope groove.

[0012] According to the test fixture provided in this embodiment, the annular boss is provided with a rope locking groove and an opening groove, one end of the rope locking groove extends to the opening groove, and the other end of the rope locking groove extends to the rope groove of the annular boss;

[0013] The rope locking groove is adapted to cooperate with the opening groove to fix one end of the rope body, and the other end of the rope body passes through the rope locking groove and is wound around the annular boss along the rope groove for connecting to the counterweight.

[0014] According to the test fixture provided in this embodiment, a contact layer is provided on the circumference of the pulley, the contact layer is used for slidingly contacting the knob, and the friction coefficient of the contact layer is greater than 0.5.

[0015] According to the test fixture provided in this embodiment, a mounting groove is provided on the connecting portion, the opening direction of the mounting groove is away from the base, and a mounting shaft is provided on the pulley, and the mounting shaft is arranged in the mounting groove.

[0016] According to the test fixture provided in this embodiment, the connecting portion includes a first connecting block and a second connecting block arranged side by side and at intervals, and the first connecting block and the second connecting block are both provided with the mounting groove; the mounting shaft passes through the pulley, and the pulley is located between the first connecting block and the second connecting block, and the two ends of the mounting shaft are respectively provided in the corresponding mounting grooves.

[0017] According to the test fixture provided in this embodiment, the first connecting block includes a first part and a second part, the first part is arranged on one side of the supporting part, the second part is arranged at the end of the second part, the second part is provided with the mounting groove, and one side of the first part has a guide inclined surface connected to the mounting groove.

[0018] According to the test fixture provided in this embodiment, a positioning groove is provided on the base, the positioning groove is suitable for placing the wearable device, and the opening direction of the positioning groove is toward the first side.

[0019] According to the test fixture provided in this embodiment, a connecting portion is provided on both sides of the supporting portion, each connecting portion is rotatably provided with a pulley, and the wearable device includes two knobs, each knob being used to abut against the corresponding pulley respectively.

[0020] The test fixture provided in the embodiment of the present application is provided with a base, a support part, a connecting part and a pulley. By rotatably connecting the pulley to the connecting part, the outer periphery of the pulley directly abuts the surface of the knob, and the rotation of the pulley can be used to directly drive the rotation of the knob. During the test, by adjusting the magnitude of the force applied to the pulley, the rotation force of the knob on the wearable device can be determined, effectively identifying and intercepting wearable device defects caused by poor knob rotation performance, thereby providing consumers with higher quality and more reliable wearable devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 This is a schematic diagram of the structure of a wearable device provided in one embodiment of the present application.

[0023] Figure 2 It is a structural diagram of a test fixture provided in one embodiment of the present application.

[0024] Figure 3 This is a partial structural diagram of a test fixture provided in one embodiment of the present application.

[0025] Figure 4 This is a schematic diagram of a pulley connected to a counterweight provided in one embodiment of the present application.

[0026] Figure 5 This is a schematic diagram of a pulley provided in one embodiment of the present application.

[0027] Figure 6 This is a side view of a pulley provided in one embodiment of the present application.

[0028] Figure 7 This is a schematic diagram of the pulley force provided by an embodiment of the present application.

[0029] Figure 8 This is a schematic diagram of the internal structure of a wearable device provided by an embodiment of the present application.

[0030] Figure 9This is a schematic diagram of diopter adjustment provided by an embodiment of the present application.

[0031] Reference numerals:

[0032] 1. Base; 11. Positioning slot; 2. Support part; 3. Connecting part; 31. Mounting slot; 32. First connecting block; 33. Second connecting block; 4. Pulley; 41. Boss; 411. Rope locking slot; 412. Opening slot; 413. Rope hole; 42. Contact layer; 43. Mounting shaft; 44. Rope slot; 5. Wearable device; 51. Knob; 52. Adjusting movable part; 53. Display screen; 54. Lens; 55. Transmission part; 6. Counterweight; 7. Rope body. DETAILED DESCRIPTION

[0033] To make the technical solutions and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0034] In the description of the embodiments of the present application, it should be noted that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for the purpose of facilitating the description of the embodiments of the present application and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of this application can be understood in specific circumstances.

[0036] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] In the description of this specification, the descriptions with reference to the terms "exemplarily", "for example" or "optional" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0038] The following combination Figures 1-9 The test fixture provided in this embodiment can effectively determine whether the knob 51 of the wearable device 5 (or other electronic device) is too tight or too loose during rotation, or whether the left and right rotation forces are inconsistent. This effectively prevents terminal products with poorly assembled knobs 51 from entering the consumer market, thereby always providing better products to end consumers.

[0039] This embodiment provides a test fixture, such as Figures 1 to 3 As shown, the test fixture includes: a base 1, a support portion 2, a connection portion 3, and a pulley 4. The base 1 is used to place a wearable device 5, with the knob 51 of the wearable device 5 facing the first side of the base 1. The support portion 2 is partially connected to the side wall of the base 1 facing the first side, and the other portion extends toward the space above the base 1; the connection portion 3 is located on at least one side of the support portion 2 and in the space above the base 1; and the pulley 4 is rotatably connected to the connection portion 3. The outer periphery of the pulley 4 abuts the knob 51, and the rotation of the pulley 4 can drive the knob 51 to rotate synchronously.

[0040] In this embodiment, the base 1 is positioned on a flat surface to securely position the wearable device 5, ensuring that the device does not shift or tip over during testing. When the wearable device 5 is placed on the base 1, the knob 51 of the wearable device 5 naturally faces the first side of the base 1 (typically the side facing the operator). This allows the outer periphery of the pulley 4 to abut against the knob 51, facilitating operation of the pulley 4. The support portion 2 is partially connected to the sidewall of the base 1 facing the first side, forming a stable support structure. The other portion extends toward the upper space of the base 1, providing a mounting base for the connector 3 and pulley 4. The connector 3 is located on at least one side of the support portion 2 and in the upper space of the base 1, facilitating installation and adjustment of the pulley 4. The outer periphery of the pulley 4 directly abuts against the knob 51 of the wearable device 5. When the pulley 4 rotates, the friction force on its outer periphery drives the knob 51 to rotate synchronously, simulating a user's rotational operation. The rotational force of the knob 51 can be determined by determining whether the rotation of the pulley 4 can drive the knob 51.

[0041] Specifically, during the test, the wearable device 5 is placed on the base 1 and the pulley 4 is inserted into the connecting portion 3. Due to gravity, the pulley 4 presses against the knob 51 of the wearable device 5. By driving the pulley 4 and observing whether the rotation of the pulley 4 can drive the knob 51 to rotate, the rotation force of the knob 51 can be determined based on the force of the rotation of the pulley 4. For example, if the rotation force of the knob 51 is large, it means that the knob 51 is too tight. Conversely, if the rotation force of the knob 51 is small, it means that the knob 51 is too loose.

[0042] The test fixture provided in the embodiment of the present application is provided with a base 1, a support part 2, a connecting part 3 and a pulley 4. By rotatably connecting the pulley 4 to the connecting part 3, the outer periphery of the pulley 4 directly abuts the surface of the knob 51, and the rotation of the pulley 4 can directly drive the knob 51 to rotate. During the test, by adjusting the magnitude of the force applied to the pulley 4, the rotation force of the knob 51 on the wearable device 5 can be determined, and defects of the wearable device 5 caused by poor rotation performance of the knob 51 can be effectively identified and the above-mentioned defective devices can be blocked from entering the market, thereby providing consumers with better quality and more reliable wearable devices 5.

[0043] In some embodiments, as Figures 1 to 4 As shown, a boss 41 is provided on one side of the pulley 4, and the test fixture further includes a rope 7 and at least one counterweight 6. The rope 7 is wound around the circumference of the boss 41, and the counterweight 6 is provided at the end of the rope 7 to drive the pulley 4 to rotate.

[0044] In this embodiment, during the test, the wearable device 5 is placed on the base 1 and the pulley 4 is placed in the connecting part 3. Due to gravity, the pulley 4 will be pressed onto the knob 51 of the wearable device 5. The counterweight 6 can drive the boss 41 and the pulley 4 to rotate through the rope body 7. By adjusting the weight of the counterweight 6, different rotational forces can be simulated, and then the knob 51 can be driven to rotate, so as to determine the rotational force of the knob 51.

[0045] For example, the counterweight may include a first weight and a second weight, wherein the weight of the first weight is greater than the weight of the second weight. The weight of the first weight corresponds to the upper limit of the preset rotational force of the knob 51, and the weight of the second weight corresponds to the lower limit of the preset rotational force of the knob 51. A force exceeding the upper limit of the preset rotational force can rotate the knob 51, which is considered too tight. A force below the lower limit of the preset rotational force can also rotate the knob 51, which is considered too loose, and the force feedback provided to the hand rotating the knob 51 is also low. In this way, based on the upper and lower limits of the preset rotational force, the proportional relationship between the weight of the weight and the rotational force provided to the knob 51, the corresponding weights of the first and second weights can be calculated. This calculation process will be described later in this article.

[0046] When the first weight is hung on the rope 7, if the pulley 4 cannot drive the knob 51 to rotate (or the pulley 4 can rotate but cannot drive the knob 51 to rotate), it means that the knob 51 is too tight.

[0047] When the second weight is hung on the rope 7, if the pulley 4 can rotate (and can drive the knob 51 to rotate at the same time), it means that the knob 51 is too loose.

[0048] The rotation resistance of the knob 51 can be determined to be within the set range only when the first weight is hung and the pulley 4 can drive the knob 51 to rotate, and the second weight is hung and the pulley 4 cannot drive the knob 51 to rotate.

[0049] In some embodiments, the counterweight may further include more weights of different weights to provide more different sizes of rotational forces, thereby enabling different weights to be selected according to the range of preset knob forces obtained by the required combination to perform knob force detection on the wearable device 5.

[0050] In some embodiments, as Figure 4 、 Figure 5 and Figure 6 As shown, the boss 41 includes an annular boss 41 , and a rope groove 44 is formed on the circumference of the annular boss 41 , and the rope body 7 is reciprocated along the rope groove 44 .

[0051] The annular boss 41 is an annular structure around the side of the pulley 4, which provides a stable support surface for the rope 7, so that the rope 7 can be wound in an orderly manner without deviation. The rope groove 44 is provided on the circumferential side of the annular boss 41, which is used to guide the rope 7 to be wound along a specific path.

[0052] During the test, the rope 7 is first fixed on the annular boss 41 and starts to be wound along the rope groove 44 of the annular boss 41. During winding, the rope 7 should be closely fitted to the rope groove 44 to ensure its stability and directionality. When the rotation force needs to be adjusted, the counterweight 6 can be hung at the appropriate position of the rope 7. The counterweight 6 pulls the rope 7 through the action of gravity, thereby driving the pulley 4 and the knob 51 to rotate.

[0053] In some embodiments, as shown in Figure 4 , Figure 5 and Figure 6 , the annular boss 41 is provided with a locking groove 411 and an opening groove 412. One end of the locking groove 411 extends to the opening groove 412, and the other end of the locking groove 411 extends to the rope groove 44 of the annular boss 41. The locking groove 411 is adapted to cooperate with the opening groove 412 to fix one end of the rope 7. The other end of the rope 7 passes through the locking groove 411 and is wound around the annular boss 41 along the rope groove 44, and the other end of the rope 7 is used to connect the counterweight 6.

[0054] In this embodiment, the annular boss 41 not only provides a support structure, but also realizes effective fixation and guidance of the rope 7 through the locking groove 411 and the opening groove 412 thereon. The rope hole 413 is located in the annular boss 41. The locking groove 411 is a groove that penetrates the annular boss 41, one end of which is connected to the opening groove 412, and the other end of which leads to the rope groove 44 on the annular boss 41. The main function of the locking groove 411 is to serve as a channel for the rope 7 to pass through, and to fix one end of the rope 7 by cooperating with the opening groove 412. The locking groove 411 cooperates with the opening groove 412 to fix the first end of the hanging rope. The first end of the hanging rope can adopt a rope head or other similar structure with a cross-sectional area larger than the locking groove 411 to fix the first end of the hanging rope. After the other end of the hanging rope passes through the locking groove 411, the end that passes out is wound around the annular boss 41 along the rope groove 44, and the end that passes out can be connected to the counterweight 6.

[0055] To increase the stability of the rope 7 when fixed, the opening groove 412 can also be provided with a rope hole 413 located on the inner side of the locking groove 411. One end of the rope 7 passes through the rope hole 413 and is fixed to the pulley 4, and the other end of the rope 7 passes through the locking groove 411 and is wound around the annular boss 41. In some embodiments, as shown in Figures 4 to 7As shown, the radius of the annular boss 41 is smaller than the radius of the pulley 4. Without considering the friction loss between the pulley 4 and the knob 51, the relationship between the tangential force F' around the pulley 4 and the thrust F converted to the knob 51 is F'=F. On the pulley 4, the weight G of the counterweight 6 is transmitted to the rope body 7. The distance from the rope groove 44 to the center of the pulley 4 is L1 (i.e., the radius corresponding to the rope groove 44), and the distance from the pulley 4 to the center is L2 (i.e., the radius of the pulley 4). Therefore, the following relationship exists: F'=L1*G / L2. Therefore, when L1 <L2时候,F’<G。示例性地,旋钮51的旋转力度被设计成较小的水平,这样用户旋转感受顺畅。这个微小力区分度不那么明显,可以通过设计L1和L2大小关系,把这个力转换放大倍数转换成砝码重力G(G> F', that is, G>F), so that the amplified gravity G can be reflected by using counterweights 6 of different weights.

[0056] In this embodiment, by designing the diameter of the pulley 4 and the diameter ratio corresponding to the rope groove of the pulley 4, the relatively small rotational force of the knob 51 can be amplified by the lever principle, and finally the detection is achieved using weights of different gravity.

[0057] In some embodiments, as Figures 4 to 6 As shown, a contact layer 42 is provided on the circumference of the pulley 4 , and the contact layer 42 is used for sliding contact with the knob 51 , and the friction coefficient of the contact layer 42 is greater than 0.5.

[0058] In this embodiment, the primary function of contact layer 42 is to increase the friction between pulley 4 and knob 51. By selecting a material with a high coefficient of friction, this ensures that pulley 4 can smoothly and stably drive knob 51 during rotation, preventing slippage or idling. Contact layer 42 also improves the contact between pulley 4 and knob 51. Because contact layer 42 is typically made of a soft and somewhat elastic material, it can better conform to the surface shape of knob 51, reducing gaps or vibrations caused by poor contact.

[0059] In addition, the contact layer 42 can also protect the knob 51 from wear or scratches to a certain extent. During the contact process between the pulley 4 and the knob 51, the contact layer 42 acts as an intermediate medium to absorb part of the impact force and friction force, thereby reducing damage to the surface of the knob 51.

[0060] Rubber is a common material for contact layer 42. It has excellent elasticity and wear resistance, as well as a high coefficient of friction (typically greater than 0.5). This makes it an ideal choice for contact layer 42. The rubber contact layer 42 adheres closely to the surface of knob 51, providing stable friction and ensuring good rotation.

[0061] In one example, if Figures 1 to 3 As shown, the connecting portion 3 is provided with a mounting groove 31, the opening of which faces away from the base 1. The mounting groove 31 is generally U-shaped. The pulley 4 is provided with a mounting shaft 43. The shape and size of the mounting groove 31 must match the mounting shaft 43 of the pulley 4 to ensure that the mounting shaft 43 can ensure the stability of the pulley 4 and prevent shaking or deviation. The mounting shaft 43 is rotatably mounted in the mounting groove 31, so that the pulley 4 can be rotatably mounted on the connecting portion 3.

[0062] When installing pulley 4, first align mounting shaft 43 with the opening of mounting slot 31, ensuring that they are coaxial. Then, gently insert mounting shaft 43 into mounting slot 31 until it is fully seated. During this process, you may need to rotate pulley 4 slightly to help mounting shaft 43 enter mounting slot 31 smoothly. After mounting shaft 43 is fully inserted into mounting slot 31, if further securing is required, it is typically done with fasteners or snaps to prevent pulley 4 from accidentally falling off during use.

[0063] In one example, if Figures 1 to 3 As shown, the connecting portion 3 includes a first connecting block 32 and a second connecting block 33 arranged side by side and at intervals, and both the first connecting block 32 and the second connecting block 33 are provided with a mounting groove 31; the mounting shaft 43 is passed through the pulley 4, and the pulley 4 is located between the first connecting block 32 and the second connecting block 33, and the two ends of the mounting shaft 43 are respectively provided in the corresponding mounting grooves 31.

[0064] Specifically, the first connecting block 32 and the second connecting block 33 are arranged side by side and spaced apart, providing a stable support frame for the pulley 4. Both the first connecting block 32 and the second connecting block 33 are provided with mounting slots 31. The shape, size, and position of the two mounting slots 31 match the mounting shaft 43 of the pulley 4. The ends of the mounting shaft 43 are rotatably mounted within the mounting slots 31 of the first connecting block 32 and the second connecting block 33, respectively. The pulley 4 is securely clamped between the first connecting block 32 and the second connecting block 33, while being able to rotate freely on the mounting shaft 43.

[0065] In summary, by providing mounting grooves 31 on the first connecting block 32 and the second connecting block 33 that are arranged side by side and at intervals, and rotating the mounting shaft 43 of the pulley 4 in these two mounting grooves 31, the stability of the pulley 4 during rotation is achieved.

[0066] Based on the above embodiments, in one embodiment, Figures 1 to 3 As shown, the first connecting block 32 includes a first part and a second part, the first part is arranged on one side of the support part 2, the second part is arranged at the end of the second part, the second part is provided with a mounting groove 31, and one side of the first part has a guide slope connected to the mounting groove 31.

[0067] Among them, the first part is located on one side of the support part 2, serving as a support and foundation for the second part. The specific shape and size of the first part may be adjusted according to the requirements of the overall design, and it is mainly used to provide a stable platform so that the second part can be firmly mounted thereon. The second part is located at the end of the first part and is provided with a mounting groove 31. The mounting groove 31 is used to install and support the mounting shaft 43 of the pulley 4. On one side of the first part, a guide slope is provided that is connected to the mounting groove 31. The function of the guide slope is to provide guidance and assistance when installing the pulley 4. When the mounting shaft 43 of the pulley 4 is close to the mounting groove 31, the guide slope can guide the mounting shaft 43 to smoothly enter the mounting groove 31, thereby reducing resistance during the installation process.

[0068] When installing pulley 4, it is necessary to align the installation shaft 43 of pulley 4 with the guide ramps on the first connecting block 32. As installation shaft 43 is positioned, the guide ramps serve as a guide, helping installation shaft 43 accurately enter the installation slot 31. During this process, the guide ramps reduce friction and collision between installation shaft 43 and the connecting block, protecting both from damage. Once both ends of installation shaft 43 on pulley 4 are fully inserted into their corresponding installation slots 31, installation of pulley 4 is complete.

[0069] Generally, the second connecting block 33 has the same structure as the first connecting block 32, and the two are symmetrically arranged. That is, the second connecting block 33 also includes a first portion and a second portion. The first portion of the second connecting block 33 is arranged side by side with and spaced apart from the first portion of the first connecting block 32, and the second portion of the second connecting block 33 is arranged side by side with and spaced apart from the second portion of the first connecting block 32.

[0070] In one embodiment, if Figure 3 As shown, a positioning groove 11 is provided on the base 1 , and the positioning groove 11 is suitable for placing the wearable device 5 , and the opening direction of the positioning groove 11 faces the first side.

[0071] When smart glasses or other wearable devices 5 are placed in the positioning slots 11, they can maintain a stable posture and are not easily slipped or moved. For example, if the wearable device 5 is smart glasses, the positioning slots 11 need to be adapted to the shape and size of the smart glasses and the position of the corresponding knob 51, so that after the smart glasses are placed in the positioning slots 11, the pulley 4 can abut against the knob 51 on the smart glasses, thereby determining the rotation force of the knob 51.

[0072] In some cases, a single wearable device 5 may be configured with two or more knobs 51. In this case, a connecting portion 3 is provided on both sides of the supporting portion 2, and each connecting portion 3 is provided with a pulley 4 for rotation. The wearable device 5 includes two knobs 51, and each knob 51 is used to abut against the corresponding pulley 4 respectively.

[0073] In this embodiment, the connectors 3 are strategically positioned on both sides of the support portion 2, based on the positions and spacing of the knobs 51 on the wearable device 5. The connectors 3 should be tightly connected to the support portion 2 to ensure they do not loosen or break during operation of the knobs 51. A pulley 4 matching the knob 51 is mounted on each connector 3, ensuring that the pulley 4 contacts the corresponding knob 51, and that each pulley 4's contact with the knob 51 is neither too heavy nor too light.

[0074] During the detection process, the wearable device 5 is placed on the base 1, and multiple pulleys 4 are placed in the corresponding connecting parts 3. Due to gravity, the pulleys 4 will press on the corresponding knobs 51 of the wearable device 5. The counterweight 6 can drive the corresponding boss 41 and the pulley 4 to rotate through the rope body 7. By adjusting the weight of the counterweight 6, different rotational forces can be simulated. The counterweight 6 drives the corresponding boss 41 and the pulley 4 to rotate through the rope body 7, and then drives the corresponding knob 51 to rotate, so as to determine the rotational force of the corresponding knob 51.

[0075] In one embodiment, the wearable device 5 is a smart glasses (such as AR glasses), and the knob 51 is a knob on the smart glasses for adjusting the diopter, which can be called a diopter adjustment knob or a focus knob. Figure 8 and Figure 9 As shown, the smart glasses include an adjusting movable part 52, a display screen 53 arranged on the adjusting movable part 52, and a lens 54 for transmitting image light emitted from the display screen 53. The adjusting movable part 52 is connected to the transmission part 55, and the display screen 53 and the lens 54 move together under the drive of the adjusting movable part 52.

[0076] Driven by the rotation of the transmission unit 55, the adjustable member 52 can move axially along the transmission unit 55. It also serves as a support for the display screen 53 and lens 54. The adjustable member 52 has a through-hole with internal threads that mate with the transmission unit 55, enabling the aforementioned transmission connection and motion transmission. Rotation of the transmission unit 55 drives the adjustable member 52 axially, thereby causing the display screen 53 and lens 54 to move synchronously as a unit. During this process, the image light emitted by the display screen 53 is magnified and optically corrected by the lens 54 before being reflected by the 45° flat mirror and curved reflector, ultimately entering the human eye to form an image. Since the relative position of the display screen 53 and lens 54 remains unchanged, the angle between the light rays remains unchanged; only the area where the light rays are reflected on the 45° flat mirror changes, thereby achieving diopter adjustment. This design ensures that the image size remains essentially consistent across different diopters, providing the wearer with a stable and clear visual experience.

[0077] In this embodiment, in order to determine the rotation force of the knob 51, the configuration components include a first weight and a second weight, the weight of the first weight is greater than the weight of the second weight, the weight of the first weight corresponds to the upper limit of the rotation force, and the weight of the second weight corresponds to the lower limit of the rotation force.

[0078] During the detection process, the wearable device 5 is first placed on the base 1 , and the pulley 4 is placed into the connecting portion 3 , with the outer periphery of the pulley 4 abutting against the outer periphery of the knob 51 .

[0079] When the first weight is hung on the rope 7, if the pulley 4 cannot drive the knob 51 to rotate (or the pulley 4 can rotate but cannot drive the knob 51 to rotate), it means that the knob 51 is too stuck.

[0080] When the second weight is hung on the rope 7, if the pulley 4 can rotate (and can drive the focusing knob 51 to rotate at the same time), it means that the knob 51 is too loose.

[0081] The rotational resistance of knob 51 is determined to be within the set range only when the first weight is attached and pulley 4 can drive knob 51 to rotate, and when the second weight is attached and pulley 4 cannot drive knob 51 to rotate. This means that the rotational force of knob 51 of the smart glasses is appropriate, and the user can experience good force feedback when adjusting knob 51.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A test fixture, characterized in that: The test fixture includes: a base, for placing the wearable device, wherein the knob of the wearable device faces the first side of the base; a support portion, partially connected to the side wall of the base facing the first side, and another portion extending toward the upper space of the base; a connecting portion located on at least one side of the supporting portion and located in the space above the base; and A pulley is rotatably connected to the connecting portion, an outer periphery of the pulley abuts against the knob, and the rotation of the pulley can drive the knob to rotate synchronously.

2. The test fixture according to claim 1, wherein: A boss is provided on one side of the pulley. The test fixture further includes a rope body and at least one counterweight. The rope body is wound around the circumference of the boss. The counterweight is used to be provided at the end of the rope body to drive the pulley to rotate.

3. The test fixture according to claim 2, wherein: The boss comprises an annular boss, a rope groove is formed on the circumference of the annular boss, and the rope body is reciprocated along the rope groove.

4. The test fixture according to claim 3, wherein: The annular boss is provided with a rope locking groove and an opening groove, one end of the rope locking groove extends to the opening groove, and the other end of the rope locking groove extends to the rope groove of the annular boss; The rope locking groove is adapted to cooperate with the opening groove to fix one end of the rope body, and the other end of the rope body passes through the rope locking groove and is wound around the annular boss along the rope groove for connecting to the counterweight.

5. The test fixture according to claim 1, wherein: A contact layer is provided on the circumference of the pulley, and the contact layer is used for sliding contact with the knob, and the friction coefficient of the contact layer is greater than 0.

5.

6. The test fixture according to claim 1, wherein: The connecting portion is provided with a mounting groove, the opening direction of the mounting groove is away from the base, the pulley is provided with a mounting shaft, and the mounting shaft is arranged in the mounting groove.

7. The test fixture according to claim 6, wherein: The connecting portion includes a first connecting block and a second connecting block arranged side by side and at intervals, and the first connecting block and the second connecting block are both provided with the mounting groove; the mounting shaft passes through the pulley, and the pulley is located between the first connecting block and the second connecting block, and the two ends of the mounting shaft are respectively provided in the corresponding mounting grooves.

8. The test fixture according to claim 7, wherein: The first connecting block includes a first part and a second part, the first part is arranged on one side of the supporting part, the second part is arranged at the end of the second part, the second part is provided with the installation groove, and one side of the first part has a guide slope connected to the installation groove.

9. The test fixture according to any one of claims 1 to 8, wherein: A positioning groove is provided on the base, and the positioning groove is suitable for placing the wearable device, and the opening direction of the positioning groove faces the first side.

10. The test fixture according to any one of claims 1 to 8, characterized in that: A connecting portion is provided on both sides of the supporting portion, and each connecting portion is rotatably provided with a pulley. The wearable device includes two knobs, and each knob is used to abut against the corresponding pulley respectively.

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