Gripping force measuring device

Abstract

The embodiment of the present disclosure discloses a clamping force measuring device, comprising a head mold assembly and an adjusting mechanism, the head mold assembly comprises a plurality of head molds, and the plurality of head molds are buckled to form a human head model profiling structure, each head mold has an assembly part; the adjusting mechanism comprises a base, a plurality of driving members and a plurality of supporting members arranged on the base, the plurality of supporting members correspond to the plurality of head molds respectively, and each supporting member has a connecting part which is matched with the corresponding assembly part and forms a detachable connection; the number of the driving members is not less than the number of the supporting members, the driving ends of the plurality of driving members are correspondingly connected with the plurality of supporting members in transmission, so that each driving member can drive the corresponding supporting member to move in a predetermined direction, and the movement directions of at least part of the supporting members are different.

Description

Technical Field

[0001] This utility model relates to the field of head-mounted device technology, and more specifically, to a clamping force measuring device. Background Technology

[0002] With the development of technology, head-mounted products such as virtual reality devices, augmented reality devices, mixed reality devices, smart helmets, headphones, smart glasses, and smart straps are becoming increasingly common. To improve user comfort, it is necessary to measure and simulate the clamping force during the wearing process.

[0003] In existing technologies, head mold components are typically used to simulate the shape of a real human head. The head-mounted device to be measured is then worn on the head mold component, and a measuring device is used to measure the clamping force exerted by the head-mounted device on the head mold component.

[0004] However, since head-mounted products need to meet the wearing needs of different users, their sizes vary, resulting in different sizes of the corresponding head mold components. This requires the measuring device to also meet the measurement needs of head-mounted products of different sizes. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a new type of clamping force measuring device.

[0006] According to one aspect of the present invention, a clamping force measuring device is provided, comprising:

[0007] A head mold assembly, comprising multiple head molds, which, when snapped together, form a human head model contour structure, and each head mold has an assembly part;

[0008] An adjustment mechanism is provided, comprising a base and a plurality of driving members and a plurality of supporting members disposed on the base. The plurality of supporting members correspond to a plurality of head molds respectively, and each supporting member has a connecting part, which is adapted to the corresponding assembly part to form a detachable connection.

[0009] The number of driving components does not exceed the number of supporting components. The driving ends of multiple driving components are connected to multiple supporting components in a corresponding transmission manner, so that each driving component can drive the corresponding supporting component to move in a predetermined direction, and at least some of the supporting components have different directions of movement.

[0010] Optionally, one of the connecting portion and the corresponding mounting portion is a protrusion, and the other of the connecting portion and the corresponding mounting portion is a groove, wherein the groove is adapted to the protrusion.

[0011] Optionally, the connecting part is a sliding piece, the mounting part is a recessed part, and the sliding piece and the recessed part are engaged.

[0012] Optionally, the recess has a slide rail, and the slide piece is slidably connected to the slide rail.

[0013] Optionally, the recess includes a first portion and a second portion along the assembly direction, the slide rail is located in the second portion, and the width of the second portion is greater than the width of the first portion.

[0014] Optionally, the head mold assembly includes four head molds: a front head mold, a left head mold, a right head mold, and an upper head mold. The adjustment mechanism includes a first support member, a second support member, and a third support member. The first support member is detachably connected to the front head mold, the second support member is detachably connected to the left head mold and the right head mold, and the third support member is detachably connected to the upper head mold.

[0015] Optionally, the adjustment mechanism includes a first driving member, a second driving member, and a third driving member. The driving end of the first driving member is drivenly connected to the first support member, the driving end of the second driving member is drivenly connected to the second support member, and the driving end of the third driving member is drivenly connected to the third support member. The driving directions of the first driving member, the second driving member, and the third driving member are perpendicular to each other.

[0016] Optionally, the adjustment mechanism further includes a second transmission component, the driving end of the second driving component is connected to the second transmission component, and the second support component includes a first column and a second column arranged in the same row along the second direction, the first column and the second column are respectively connected to the second transmission component;

[0017] Driven by the second driving member, the second transmission member can drive the first column and the second column to move in opposite directions along the second direction.

[0018] Optionally, the first column has a first sliding member on the side away from the second column, and the second column has a second sliding member on the side away from the first column. The first sliding member forms a first connecting portion, and the second sliding member forms a second connecting portion.

[0019] Optionally, the second support member includes a first sub-support member and a second sub-support member arranged in the same row along the second direction, the driving end of the second driving member is connected to the first sub-support member in a transmission connection, and the second sub-support member is fixed on the base;

[0020] Driven by the second driving member, the first sub-support member can move along the second direction and move closer to or further away from the second sub-support member.

[0021] Optionally, the first sub-support member is detachably connected to the left head mold, and the second sub-support member includes a support base and a connecting rod, with one end of the connecting rod passing through the support base and the other end of the connecting rod forming a third connecting part.

[0022] Optionally, the assembly part of the right head mold is a hollow sleeve, and the hollow sleeve is detachably connected to the connecting rod.

[0023] One technical advantage of the embodiments disclosed herein is that:

[0024] This invention utilizes a detachable connection design between the connecting part of the support component and the assembly part of the corresponding head mold, making the clamping force measuring device highly versatile. Different specifications or types of head molds can be easily and quickly replaced according to different measurement needs. For example, when measuring the clamping force of children's head-mounted devices, a child's head model can be used; for head-mounted devices with special shapes or sizes, corresponding head molds can also be customized for measurement. This flexibility greatly expands the applicability of the clamping force measuring device, ensuring accurate clamping force data can be obtained in various measurement scenarios.

[0025] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0026] The accompanying drawings, which form part of this specification, illustrate embodiments of the present invention and, together with the specification, serve to explain the principles of the present invention.

[0027] Figure 1 This is a schematic diagram of an adjustment mechanism for a head mold assembly according to an embodiment of the present disclosure;

[0028] Figure 2 This is another schematic diagram of an adjustment mechanism for a head mold assembly according to an embodiment of the present disclosure;

[0029] Figure 3 This is another schematic diagram of an adjustment mechanism for a head mold assembly according to an embodiment of the present disclosure;

[0030] Figure 4 This is a cross-sectional view of a connection of a second support member according to an embodiment of this disclosure;

[0031] Figure 5 This is a schematic diagram of a head mold assembly according to an embodiment of the present disclosure;

[0032] Figure 6 This is another schematic diagram of a head mold assembly according to an embodiment of the present disclosure;

[0033] Figure 7This is a partial schematic diagram of a left head mold according to an embodiment of the present disclosure;

[0034] Figure 8 This is a cross-sectional view of the mating point of the left and right head molds according to an embodiment of this disclosure;

[0035] Figure 9 This is a cross-sectional view of the front mold mating area according to an embodiment of the present disclosure.

[0036] Explanation of reference numerals in the attached figures:

[0037] 100. Head mold; 1001. Assembly section; 10011. First part; 10012. Second part;

[0038] 1. Base; 2. First driving component; 3. Second driving component; 4. First support component; 5. Second support component; 51. First column; 511. First sliding component; 52. Second column; 521. Second sliding component; 6. First detection component; 7. Second detection component; 8. First transmission component; 9. Second transmission component; 10. Control component; 11. First reflector; 12. Second reflector; 13. First connector; 14. Second connector; 15. Third driving component; 16. Third support component; 17. Third detection component; 18. Third transmission component; 19. Pressure sensor; 20. Third connector; 21. Third reflector; 22. Bracket. Detailed Implementation

[0039] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0040] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0041] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0042] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0043] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0044] This invention provides a clamping force measuring device, which can measure the clamping force of a head-mounted device after it is worn on a head mold assembly, thereby improving the user's comfort during the wearing process.

[0045] like Figures 1 to 6 As shown, the clamping force measuring device provided in this embodiment of the present invention includes:

[0046] A head mold assembly, comprising a plurality of head molds 100, which, when snapped together, form a human head model contour structure, and each head mold 100 has an assembly part 1001;

[0047] The adjustment mechanism includes a base 1 and a plurality of driving members and a plurality of supporting members disposed on the base 1. The plurality of supporting members correspond to the plurality of head molds 100 respectively, and each supporting member has a connecting part. The connecting part is adapted to the corresponding assembly part 1001 and forms a detachable connection.

[0048] The number of driving components does not exceed the number of supporting components. The driving ends of multiple driving components are connected to multiple supporting components in a corresponding transmission manner, so that each driving component can drive the corresponding supporting component to move in a predetermined direction, and at least some of the supporting components have different directions of movement.

[0049] like Figure 5 and Figure 6 As shown, in one embodiment, the head mold assembly includes four head molds 100: a front head mold, a left head mold, a right head mold, and an upper head mold. The four head molds 100 can be made of materials with certain strength and hardness, such as plastic or metal alloys, to ensure that the head mold assembly can maintain a stable shape during measurement, thereby accurately simulating the external structure of the human head.

[0050] Four head molds 100—front, left, right, and top—are joined together to form a human head model. Specific joining methods include, but are not limited to, snap-fit ​​connections, magnetic connections, and bolt connections. For example, snaps and slots can be provided at corresponding positions on the edges of the head molds 100. After aligning two adjacent head molds 100, pressing them together causes the snaps to engage with the slots, achieving a tight fit. Alternatively, magnets can be embedded along the edges of the head molds 100, using magnetic attraction to join them together. Bolt holes can also be provided on the head molds 100 to secure them together with bolts.

[0051] The snap-fit ​​head model should have a shape and contour similar to a real human head to ensure the accuracy and reliability of measurement results. This design can realistically simulate the shape, size, and contour of a real human head, so that when measuring the clamping force after wearing the head-mounted device, the force applied by the device and the resulting deformation are close to reality. For example, when measuring the clamping force of the head-mounted device on the head, a realistic head model can accurately reflect the force on the contact area between the device and the head, avoiding measurement errors caused by inaccurate models, and thus providing more reliable data support for the design and optimization of the head-mounted device.

[0052] In one embodiment, the head mold assembly may further include two head molds 100, a front head mold and a rear head mold, which are fastened together to form a human head model contour structure.

[0053] Specifically, the base 1, serving as the mounting foundation for the entire adjustment mechanism, can be made of high-strength, high-rigidity metal materials, such as aluminum alloy or stainless steel. The base 1 is typically a rectangular flat plate structure with a precision-machined surface to ensure flatness, thus providing stable support and a mounting reference. Mounting holes can be provided at the four corners of the base 1 for fixing the entire adjustment mechanism to a work platform or other equipment.

[0054] like Figure 9 As shown, the first connecting part of the first support member 4 is adapted to the assembly part 1001 of the front mold and forms a detachable connection. For example, the first connecting part is one of the bayonet and the groove, and the assembly part 1001 of the front mold is the other of the bayonet and the groove. The bayonet and the groove are adapted to each other. By embedding the first connecting part into the assembly part 1001 of the front mold, a stable connection and convenient disassembly can be achieved.

[0055] Similarly, the second connecting part of the second support member 5 is adapted to the assembly part 1001 of the left and right head molds to form a detachable connection. For example, the second connecting part is one of the bayonet and the groove, and the assembly part 1001 of the left and right head molds is the other of the bayonet and the groove. The bayonet and the groove are adapted to each other. By embedding the second connecting part into the assembly part 1001 of the left and right head molds, a stable connection and convenient disassembly can be achieved.

[0056] Similarly, the third connecting part of the third support member 16 is adapted to the assembly part 1001 of the upper mold and forms a detachable connection. The third connecting part is one of the bayonet and the groove, and the assembly part 1001 of the upper mold is the other of the bayonet and the groove. The bayonet and the groove are adapted to each other. By embedding the third connecting part into the assembly part 1001 of the upper mold, a stable connection and convenient disassembly can be achieved.

[0057] Thus, the detachable connection design between the connecting part of the support component and the corresponding assembly part 1001 makes the clamping force measuring device highly versatile. Different specifications or types of head molds can be easily and quickly replaced according to different measurement needs. For example, when measuring the clamping force of a child's head-mounted device, a child's head model can be used; for head-mounted devices with special shapes or sizes, corresponding head molds can also be customized for measurement. This flexibility greatly expands the applicability of the clamping force measuring device, ensuring accurate clamping force data can be obtained in various measurement scenarios.

[0058] Furthermore, the detachable connection structure is designed with positioning and guiding functions, facilitating precise alignment between the connecting part of the support component and the corresponding assembly part 1001 during installation. This precise alignment ensures that the head mold assembly maintains a stable position and posture during measurement, avoiding head mold wobbling or displacement caused by inaccurate connection, thereby reducing measurement errors and improving measurement accuracy.

[0059] During multiple measurements, the head mold assembly may need to be repeatedly disassembled and reassembled. The detachable connection design also provides good repeatability, ensuring that the relative position and connection status of the head mold 100 and its corresponding support remain highly consistent after each installation. This consistency ensures that the measurement conditions and the state of the measured object are essentially the same across multiple measurements, resulting in better repeatability and comparability of the measurement results, thereby improving the reliability of the measurement data.

[0060] In one embodiment, four support members may be provided, which correspond one-to-one with the four head molds 100 to form a detachable connection, so as to facilitate the independent disassembly, maintenance and replacement of the four head molds 100.

[0061] In one embodiment, eight support members may be provided, with each head mold 100 cooperating with two support members. The two support members together support the head mold 100 and adjust its position.

[0062] Specifically, the driving component can be a servo motor or a cylinder, and it can be fixed to the corresponding position on the base 1 with bolts. For example... Figure 2 As shown, slots can be cut at corresponding positions on the base 1, and the drive component can be embedded in the corresponding slot. This facilitates the assembly of the drive component and helps improve assembly accuracy. At the same time, the slots can also form a relatively independent area on the base, so that the drive component embedded therein can operate more stably.

[0063] In one embodiment, the number of driving components can be set to be equal to the number of supporting components. For example, three driving components can be set to independently drive three supporting components. Figures 1 to 3As shown, driven by the first driving component 2, the first support component 4 can move along the first direction, i.e., the X direction in the figure, and adjust the position of the corresponding front head mold; driven by the second driving component 3, the second support component 5 can move along the second direction, i.e., the Y direction in the figure, and adjust the position of the corresponding left and right head molds; driven by the third driving component 15, the third support component 16 can move along the third direction, i.e., the Z direction in the figure, and adjust the position of the corresponding upper head mold. Thus, the head mold assembly can be independently adjusted in multiple XYZ directions using three driving components to adapt to different wearing needs.

[0064] In one embodiment, the number of driving components can be less than the number of supporting components. For example, four supporting components can be set to cooperate with four head molds respectively, with two supporting components cooperating with the left and right head molds respectively. These two supporting components can be driven by one driving component to move in opposite directions to synchronously adjust the left and right head molds. In this case, only three driving components are required.

[0065] Optionally, one of the connecting part and the corresponding assembly part 1001 is provided with a first thread, and the other of the connecting part and the corresponding assembly part 1001 is provided with a second thread, wherein the first thread and the corresponding second thread form a threaded connection;

[0066] Alternatively, one of the connecting part and the corresponding assembly part 1001 may be a magnet, and the other of the connecting part and the corresponding assembly part 1001 may be a magnetic component, with the magnet and the corresponding magnetic component forming a magnetic attraction connection.

[0067] Therefore, by using the threaded connection or magnetic connection that matches the connecting part and the corresponding assembly part 1001, it is also possible to easily and quickly change the head mold 100 of different specifications without damaging the head mold 100.

[0068] Optionally, one of the connecting portion and the corresponding mounting portion 1001 is a protrusion, and the other of the connecting portion and the corresponding mounting portion 1001 is a groove, wherein the groove is adapted to the protrusion.

[0069] like Figures 6 to 8 As shown, the mounting part 1001 on the head mold 100 can be set as a protrusion, and the connecting part on the corresponding support member can be a groove that matches the protrusion, with the groove and the protrusion forming a snap-fit; or the mounting part 1001 on the head mold 100 can be set as a groove, and the connecting part on the corresponding support member can be a protrusion that matches the protrusion, with the groove and the protrusion forming a snap-fit. Both methods can achieve convenient disassembly of the head mold 100.

[0070] Optionally, the connecting part is a sliding piece, the mounting part 1001 is a recessed part, and the sliding piece and the recessed part are engaged.

[0071] like Figure 7 and Figure 8 As shown, the assembly part 1001 of the head mold 100 can be set as a recessed part, and the slide can be adapted to the corresponding recessed part and form a snap-fit, so that the corresponding support can be snap-fitted with the head mold 100. This allows for convenient and reliable assembly of the corresponding support and the head mold 100, while also facilitating the disassembly and replacement of the head mold 100. Thus, the clamping force measuring device can be used to measure the clamping force of different front head molds.

[0072] Furthermore, by setting the slider on the support to cooperate with the corresponding recess of the head mold 100, precise control and fine-tuning of the head mold 100's position can be achieved. During clamping force measurement, the accurate position of the head mold 100 is crucial to the accuracy of the measurement results. The slider, through its own sliding mechanism, such as a guide rail or a groove, allows the head mold 100 to move precisely in a specific direction.

[0073] Traditional head mold installation and positioning methods often rely on manual operation, which is prone to introducing operational errors. The sliding plate design, however, makes the positioning process of the head mold 100 more mechanized and automated, reducing human interference. Operators only need to perform simple operations, such as rotating the adjustment knob or pushing the sliding rod, to move the sliding plate to the accurate position, avoiding positioning errors caused by differences in operator skill and experience, thereby improving the consistency and reliability of measurement results.

[0074] Furthermore, the slider design allows the clamping force measuring device to adapt to head molds 100 of different sizes. By adjusting the position of the slider or replacing it with sliders of different specifications, the installation position and spacing of the head mold 100 can be changed, thereby meeting the measurement needs of front head molds of different sizes. This adaptability gives the clamping force measuring device a wider range of applications, enabling it to meet the clamping force measurement needs of different industries and products.

[0075] Optionally, the recess has a slide rail, and the slide piece is slidably connected to the slide rail.

[0076] like Figure 7 and Figure 8 As shown, the recess of the head mold 100 can be provided with a slide rail, and the slide piece is adapted to the slide rail and can be slidably assembled along the slide rail, so as to facilitate the assembly and disassembly of the support member and the corresponding head mold 100.

[0077] Optionally, the recess includes a first portion 10011 and a second portion 10012 along the assembly direction, the slide rail is located in the second portion 10012, and the width of the second portion 10012 is greater than the width of the first portion 10011.

[0078] like Figure 7 As shown, the first part 10011 and the second part 10012 can be arranged vertically along the Z direction, with the first part 10011 located above and the second part 10012 located below. During assembly, the slider can be pushed from bottom to top, allowing it to slide along the slide rail of the second part 10012 until it abuts against the first part 10011. This allows the smaller first part 10011 to limit the sliding of the slider, thereby reducing assembly difficulty.

[0079] Optionally, the head mold assembly includes four head molds 100: a front head mold, a left head mold, a right head mold, and an upper head mold. The adjustment mechanism includes a first support member 4, a second support member 5, and a third support member 16. The first support member 4 is detachably connected to the front head mold, the second support member 5 is detachably connected to the left and right head molds, and the third support member 16 is detachably connected to the upper head mold. This allows for convenient disassembly of the front, left, right, and upper head molds.

[0080] like Figures 1 to 3 As shown, driven by the first driving component 2, the first support component 4 can move along the X direction and adjust the position of the mating front head mold; driven by the second driving component 3, the second support component 5 can move along the Y direction and adjust the position of the mating left and right head molds; driven by the third driving component 15, the third support component 16 can move along the Z direction and adjust the position of the mating upper head mold. Thus, the head mold assembly can be independently adjusted in multiple XYZ directions using three driving components to adapt to different wearing needs.

[0081] Optionally, the adjustment mechanism includes a first driving member 2, a second driving member 3, and a third driving member 15. The driving end of the first driving member 2 is connected to the first support member 4, the driving end of the second driving member 3 is connected to the second support member 5, and the driving end of the third driving member 15 is connected to the third support member 16. The driving directions of the first driving member, the second driving member 3, and the third driving member 15 are perpendicular to each other.

[0082] like Figures 1 to 3As shown, the driving direction of the first driving component 2 is the first direction, i.e., the X direction in the figure; the driving direction of the second driving component 3 is the second direction, i.e., the Y direction in the figure; and the driving direction of the third driving component 15 is the third direction, i.e., the Z direction in the figure, to facilitate the multi-directional position adjustment of the head mold assembly in the XYZ directions. Specifically, a Z-direction bracket can be first set on the base 1, and then the third driving component 15 can be placed on this bracket, so that the driving direction of the third driving component 15 faces the Z direction. The third support component 16 is then connected directly or through the third transmission component 18 to the driving end of the third driving component 15, enabling the third driving component 15 to drive the third support component 16 to move along the Z direction, thereby achieving the position adjustment of the upper head mold.

[0083] like Figures 1 to 3 As shown, it also includes a third transmission component 18, a third connecting component 20, a third reflector 21, and a bracket 22. First, the bracket 22 is connected to the base 1 along the Z direction. Then, the third transmission component 18 is connected to the bracket 22. After that, the third connecting component 20 is connected to the third transmission component 18. Finally, the third support component 16 and the third reflector 21 are respectively connected to two adjacent sides of the third connecting component 20, and the third reflector 21 is oriented towards the third detection component 17 so that the third detection component 17 can detect the displacement value of the third support component 16.

[0084] Optionally, the adjustment mechanism further includes a second transmission member 9, the driving end of the second driving member 3 is connected to the second transmission member 9, and the second support member 5 includes a first column 51 and a second column 52 arranged in the same row along the second direction, the first column 51 and the second column 52 are respectively connected to the second transmission member 9.

[0085] Driven by the second driving member 3, the second transmission member 9 can drive the first column 51 and the second column 52 to move in opposite directions along the second direction.

[0086] Specifically, the second driving component 3 can be a servo motor, and the second transmission component 9 is a slide rod connected to the drive end of the servo motor. Under the drive of the servo motor, the slide rod can generate precise linear motion and drive the second support component 5 on it to move to a preset position.

[0087] like Figures 1 to 3 As shown, the second support member 5 includes a first column 51 and a second column 52 arranged in the same row at intervals along the second direction, i.e., the Y direction in the figure. The first column 51 and the second column 52 are respectively connected to corresponding positions of the second transmission member 9. One of the first column 51 and the second column 52 is engaged with the left head mold, and the other of the first column 51 and the second column 52 is engaged with the right head mold, so as to facilitate the adjustment of the position of the left and right head molds.

[0088] Driven by the second driving component 3, the second transmission component 9 can drive the first column 51 and the second column 52 to move in opposite directions along the second direction, that is, the Y direction in the figure, which means that the first column 51 and the second column 52 move closer to each other or further away from each other, thereby realizing the position adjustment of the left and right head molds.

[0089] Optionally, the second transmission member 9 has a first external thread and a second external thread, the first column 51 has a first internal thread, the second column 52 has a second internal thread, the first internal thread is threaded to the first external thread, the second internal thread is threaded to the second external thread, and the first external thread and the second external thread are respectively threaded together, and the first external thread and the second external thread have opposite thread directions.

[0090] Specifically, the first external thread and the second external thread on the second transmission component 9 can be set to have the same pitch and opposite directions of rotation, so that under the drive of the second driving component 3, the first column 51 and the second column 52 can produce displacements in opposite directions, that is, generate reverse synchronous movements, so as to realize the synchronous position adjustment of the left and right head molds.

[0091] In this way, the second transmission component 9 with reverse threads can achieve bidirectional drive function without the need for additional anti-loosening nuts, locking washers and other components, which helps to reduce the production cost and assembly difficulty of the adjustment mechanism.

[0092] Optionally, the second driving member 3 includes a first sub-driving member and a second sub-driving member, and the second transmission member 9 includes a first segment and a second segment arranged at intervals. The driving end of the first sub-driving member is connected to the first segment, and the driving end of the second sub-driving member is connected to the second segment. The first column 51 is connected to the first segment, and the second column 52 is connected to the second segment. The driving direction of the first sub-driving member is opposite to that of the second sub-driving member, so that the first column 51 and the second column 52 can be driven to move closer to each other or further away from each other along the second direction, that is, the Y direction in the figure, by the first sub-driving member and the second sub-driving member respectively, thereby also realizing the independent position adjustment of the left and right head molds.

[0093] In this way, two sub-drive components can be used to achieve independent drive of the two pillars, so that the positions of the left head mold and the right head mold can be adjusted separately to adapt to different wearing needs.

[0094] Optionally, the third support member 16 has an L-shaped structure.

[0095] like Figures 1 to 3As shown, the cross-section of the third support member 16 along the XZ plane is L-shaped. This allows the L-shaped third support member 16 to cooperate with the head mold for easy position adjustment, while also allowing the bending design of the third support member 16 to avoid interference with the movement of the first column 51 and the second column 52. This prevents the third support member 16 from interfering with the movement of the two columns, thereby ensuring the reliability and safety of the adjustment mechanism.

[0096] In one embodiment, a pressure sensor 19 can also be embedded in the right-angle region of the L-shaped structure. The pressure sensor 19 can detect the pressure of the mating upper mold, i.e., the clamping force.

[0097] Optionally, the side of the first column 51 away from the second column 52 has a first sliding member 511, and the side of the second column 52 away from the first column 51 has a second sliding member 521. The first sliding member 511 forms a first connecting portion, and the second sliding member 521 forms a second connecting portion.

[0098] like Figure 3 As shown, the side of the first column 51 away from the second column 52 can be partially excavated first, and then the first sliding member 511 can be connected to reliably install the first sliding member 511 onto the first column 51; similarly, the side of the second column 52 away from the first column 51 can be partially excavated first, and then the second sliding member 521 can be connected to reliably install the second sliding member 521 onto the second column 52.

[0099] Thus, the first column 51 is connected to the first sliding member 511, and the second column 52 is connected to the second sliding member 521. The first sliding member 511 and the second sliding member 521 are both located on the outside and can form a detachable fit with the corresponding left head mold and right head mold respectively.

[0100] In one embodiment, a pressure sensor 19 can also be connected to the first column 51 and abut against the first slider 511. For example, the pressure sensor 19 can be embedded in the first column 51 and abut against the first slider 511 to form a pressure transmission path of left head mold - first slider 511 - pressure sensor 19, so that the pressure sensor 19 can detect the pressure of the mating left head mold, i.e., the clamping force.

[0101] Similarly, a pressure sensor 19 can be connected to the second column 52 and abut against the second slider 521. For example, the pressure sensor 19 can be embedded in the second column 52 and abut against the second slider 521 to form a pressure transmission path of right head mold - second slider 521 - pressure sensor 19, so that the pressure sensor 19 can detect the pressure of the mating right head mold, i.e., the clamping force.

[0102] The first sliding member 511 and the second sliding member 521 can each adopt standardized interfaces, such as dovetail grooves, quick-release buckles or threaded holes, to support the quick replacement of left and right head molds of different specifications.

[0103] Optionally, the second support member 5 includes a first sub-support member and a second sub-support member arranged in the same row along the second direction, the driving end of the second driving member 3 is connected to the first sub-support member in a transmission connection, and the second sub-support member is fixed on the base 1.

[0104] Driven by the second driving member 3, the first sub-support member can move along the second direction and move closer to or further away from the second sub-support member.

[0105] Specifically, in this embodiment, the second sub-support is a fixed design, and the second driving member 3 only drives the first sub-support to move along the second direction, that is, the Y direction in the figure, and move closer to or away from the second sub-support, thereby realizing the position adjustment of the corresponding head mold 100.

[0106] Optionally, the first sub-support member is detachably connected to the left head mold, and the second sub-support member includes a support base and a connecting rod, with one end of the connecting rod passing through the support base and the other end of the connecting rod forming a third connecting part.

[0107] Specifically, the support base, as the base of the second sub-support, provides a stable support platform for the connecting rod and the right head mold. It is typically made of materials with sufficient strength and rigidity, such as metal or high-strength engineering plastics, capable of withstanding various forces generated by the right head mold during testing, avoiding localized stress concentration, and thus ensuring that the second sub-support will not deform or be damaged due to excessive force. This provides a solid foundation for the accuracy and reliability of the clamping force test.

[0108] One end of the connecting rod is inserted into the support base, creating a tight and reliable connection. This connection can be achieved through various methods such as threaded connections and interference fits, ensuring that the connecting rod is firmly fixed to the support base and will not loosen or wobble during testing. Furthermore, the through-hole design of the connecting rod and the support base increases the contact area between them, improving the stability and reliability of the connection and ensuring that the right head mold maintains a stable position and posture throughout the test.

[0109] The other end of the connecting rod forms a third connecting part, which is detachably connected to the assembly part 1001 of the right head mold, allowing the second sub-support to be adapted to left and right head molds of different specifications and shapes. The connecting rod and the assembly part 1001 of the right head mold can be detachably connected by means of threaded connection, snap-fit ​​connection, pin connection, etc., all of which can facilitate the disassembly of the two.

[0110] By replacing the connecting rods of different specifications or using different mating methods, the second sub-support can be connected to various types of right head molds, thereby meeting the needs of different test objects and improving the versatility and economy of the clamping force measuring device.

[0111] Optionally, the assembly part 1001 of the right head mold has a hollow sleeve, and the hollow sleeve is detachably connected to the connecting rod.

[0112] Specifically, the hollow sleeve is used to insert and fix the connecting rod of the second sub-support. When the connecting rod is inserted into the hollow sleeve, the two can form a tight integral structure. During the test, the right head mold will be subjected to various forces. The hollow sleeve can evenly distribute these forces to the connecting rod, thereby avoiding local stress concentration and enhancing the overall structural strength of the right head mold, enabling it to withstand greater external forces and ensuring the smooth progress of the test.

[0113] Furthermore, this through-hole design also limits the swaying and vibration of the right head mold. The tight fit of the connecting rod within the hollow sleeve constrains the movement of the right head mold in all directions, reducing the amplitude of swaying and thus improving the stability and reliability of the test.

[0114] Furthermore, during multiple tests, it is necessary to ensure that the right head mold can be repeatedly positioned in the same location. The fit design of the hollow sleeve and connecting rod also provides excellent repeatability. Because the fit between the two is fixed, the right head mold can accurately return to its original position after each installation and disassembly, reducing the accumulation of positioning errors and facilitating multiple measurements.

[0115] Optionally, the adjustment mechanism further includes a pressure sensor 19, with one pressure sensor 19 connected to each of the supports. This creates a pressure transmission path from the head mold 100 to the support and then to the pressure sensor 19, allowing the pressure sensor 19 to measure the supporting force of the corresponding support in real time, i.e., the pressure or clamping force of the head mold 100.

[0116] Optionally, it further includes a first transmission member 8 and a second transmission member 9, wherein the driving end of the first driving member 2 is connected to the first transmission member 8, the driving end of the second driving member 3 is connected to the second transmission member 9, and the first support member 4 is connected to the first transmission member 8, and the second support member 5 is connected to the second transmission member 9.

[0117] like Figures 1 to 3 As shown, both the first driving component 2 and the second driving component 3 are servo motors, and both the first transmission component 8 and the second transmission component 9 are sliding rods connected to the driving end of the servo motors. Under the drive of the servo motors, the sliding rods can generate precise linear motion and drive the support components on them to move to a preset position.

[0118] Optionally, the adjustment mechanism further includes detection elements, the number of which is equal to the number of driving elements. Each detection element is configured to detect the displacement value of the corresponding support element, and the plurality of detection elements are communicatively connected to the plurality of driving elements one by one.

[0119] The detection component can be a laser-type, photoelectric, or Hall-effect displacement sensor. These displacement sensors can accurately measure the displacement of the corresponding support component and convert the displacement signal into an electrical signal to be output to the controller.

[0120] Furthermore, the detection component is connected to the drive component via signal lines or wireless communication. During adjustment, the detection component can detect the displacement value of the corresponding support component in real time and convert the displacement signal into an electrical signal, which is then sent to the control circuit of the drive component. The control circuit of the drive component compares the received displacement signal with the preset target displacement value. If there is a deviation, the operating state of the drive component is adjusted until the displacement of the corresponding support component reaches the target value, thereby achieving precise adjustment of the head mold assembly position.

[0121] Therefore, through this closed-loop feedback control system, the drive component can adjust its operating state in a timely manner based on the detected deviation between the actual displacement and the target displacement of the corresponding support component, such as changing its speed, direction, or stopping operation, thereby achieving precise control over the position of the corresponding head mold 100. Compared with traditional open-loop control adjustment mechanisms, the clamping force measuring device of this invention can greatly improve the adjustment accuracy, control the displacement error within a very small range, and ensure that the head mold assembly accurately reaches the preset position.

[0122] Furthermore, the one-to-one communication connection between the detection component and the driving component enables intelligent control of the clamping force measuring device. Operators can preset the target position parameters of the head mold assembly through an external control system. The adjustment mechanism automatically adjusts the operation of the corresponding driving component based on the displacement information fed back by the detection component, thus achieving automated adjustment of the corresponding head mold position. This intelligent control method greatly simplifies the operation process, reduces manual intervention, and improves operational efficiency and accuracy.

[0123] Optionally, it also includes a control element 10, which is disposed on the base 1. The first detection element 6, the second detection element 7, the third detection element 17, the first driving element 2, the second driving element 3 and the third driving element 15 are respectively communicatively connected to the control element 10.

[0124] Specifically, the first detection element 6, the second detection element 7, and the third detection element 17 can detect the displacement values ​​of the first support element 4, the second support element 5, and the third support element 16 in real time, and feed this data back to the control element 10. The control element 10, i.e., the controller, compares the feedback displacement value with the preset target displacement value in real time. If a deviation is found, it will adjust the operating state of the corresponding drive element, such as changing the speed or direction, to eliminate the deviation and achieve closed-loop feedback precise control. This control method can promptly correct errors in the adjustment process, keeping the displacement error of the corresponding head mold 100 within a very small range, thereby meeting the high-precision position requirements of the head mold 100 in medical, scientific research, and other fields.

[0125] The adjustment of the head model assembly often involves parameters in multiple directions, such as horizontal and vertical displacement. The controller 10 can simultaneously process displacement information from the first detector 6, the second detector 7, and the third detector 17 in multiple directions, and precisely control the movements of the first drive component, the second drive component 3, and the third drive component 15 according to a preset collaborative adjustment algorithm, thereby achieving precise collaborative adjustment of parameters in multiple directions. For example, in a virtual reality interaction scenario, in order for the head model assembly to accurately simulate the user's head movements, it is necessary to adjust the position and angle of the head model assembly in multiple directions simultaneously. The controller 10 can precisely control the corresponding drive components based on the user's motion data, making the movement of the head model assembly highly consistent with the user's actual movement, thus enhancing the realism of the virtual reality experience.

[0126] Optionally, it also includes a first reflector 11, which is connected to the first transmission member 8 or the first support member 4, and the first detection member 6 is a first laser sensor, which is disposed on the base 1 and faces the first reflector 11.

[0127] And / or, it also includes a second reflector 12, which is connected to the second transmission member 9 or the second support member 5, and the second detection member 7 is a second laser sensor, which is disposed on the base 1 and faces the second reflector 12;

[0128] And / or, it also includes a third reflector 21, which is connected to the third transmission member 18 or the third support member 16, and a third detection member 17, which is a third laser sensor, which is disposed on the base 1 and faces the third reflector 21.

[0129] like Figure 1 As shown, the first reflector 11 can be a reflector plate. The first reflector 11 is connected to the first transmission member 8 or the first support member 4, so that the first reflector 11 can move together with the first support member 4. During the movement of the first reflector 11 together with the first support member 4, the first laser sensor can emit laser light towards the first reflector 11 and receive the laser light reflected back from the first reflector 11, thereby obtaining the real-time displacement of the first support member 4, so as to adjust the driving state of the first drive member.

[0130] Similarly, the second reflector 12 can also be a reflector plate. The second reflector 12 is connected to the second transmission member 9 or the second support member 5, so that the second reflector 12 can move together with the second support member 5. During the movement of the second reflector 12 together with the second support member 5, the second laser sensor can emit laser light towards the second reflector 12 and receive the laser light reflected back from the second reflector 12, thereby obtaining the real-time displacement of the second support member 5, so as to adjust the driving state of the second drive member 3.

[0131] Similarly, the third reflector 21 can also be a reflector plate. The third reflector 21 is connected to the third transmission member 18 or the third support member 16, so that the third reflector 21 can move together with the third support member 16. During the movement of the third reflector 21 together with the third support member 16, the third laser sensor can emit laser light towards the third reflector 21 and receive the laser light reflected back from the third reflector 21, thereby obtaining the real-time displacement of the third support member 16, so as to adjust the driving state of the third drive member 15.

[0132] Optionally, the laser sensor and the corresponding reflector are coaxially arranged;

[0133] Alternatively, the angle between the axes of the laser sensor and the corresponding reflector shall not exceed 45 degrees.

[0134] In one embodiment, the laser sensor and the corresponding reflector can be set to be coaxial, so that the laser emission path and the receiving path are completely coincident, thereby eliminating the measurement dead angle caused by the laser sensor due to the optical path offset, and thus improving the detection accuracy and real-time response capability of the laser sensor.

[0135] In one embodiment, the laser sensor and the corresponding reflector can be configured to be coaxial. On the one hand, this allows for adaptation to complex spatial layouts within the adjustment mechanism, facilitating optimization of the mechanism's internal structure; on the other hand, setting the included angle between their axes to be less than or equal to 45 degrees also improves the laser sensor's environmental adaptability through a special coating process.

[0136] Optionally, it also includes a first connector 13, which is disposed on the first transmission member 8, and the first support member 4 and the first reflector 11 are respectively connected to the first connector 13;

[0137] And / or, it also includes a second connector 14, which is disposed on the second transmission member 9, and the second support member 5 and the second reflector member 12 are respectively connected to the second connector 14.

[0138] like Figure 2 As shown, the first connecting member 13 can be a connecting plate. After it is placed on the first transmission member 8, the first support member 4 and the first reflector 11 are placed on it. This can facilitate the installation of the first support member 4 and the first reflector 11, and also avoid friction and wear between the first support member 4 and the first reflector 11 and the first transmission member 8, which helps to ensure the normal operation of the first support member 4 and the first reflector 11.

[0139] Furthermore, the driving force transmission path formed by the first driving component - first transmission component 8 - first connecting component 13 - first support component 4 and first reflector 11 can also buffer the driving force output by the first driving component, avoiding the risk caused by the driving force directly acting on the first support component 4 and the first reflector 11.

[0140] Similarly, the second connector 14 can also be a connecting plate, which is placed on the second transmission member 9, and then the second support member 5 and the second reflector 12 are placed on it. This can facilitate the installation of the second support member 5 and the second reflector 12, while also avoiding friction and wear between the second support member 5, the second reflector 12 and the second transmission member 9, thus helping to ensure the normal operation of the second support member 5 and the second reflector 12.

[0141] Furthermore, the driving force transmission path formed by the second driving member 3-second transmission member 9-second connecting member 14-second support member 5 and second reflector 12 can also buffer the driving force output by the second driving member 3, avoiding the risk caused by the driving force directly acting on the second support member 5 and the second reflector 12.

[0142] Optionally, the first support member 4 and the first reflector 11 are respectively connected to two adjacent sides of the first connector 13, and the extending direction of the first support member 4 is perpendicular to the driving direction of the first drive member.

[0143] like Figure 2 As shown, the first support member 4 and the first reflector 11 are respectively connected to two adjacent sides of the first connector 13 to make full use of the connection space of the first connector 13 and to avoid interference between the first support member 4 and the first reflector 11 during movement. The extension direction of the first support member 4 is the Z direction, and the driving direction of the first drive member is the X direction, so as to use the first support member 4 to adjust the position of the mating head mold.

[0144] Optionally, the second support member 5 and the second reflector 12 are respectively connected to two adjacent sides of the second connector 14, and the extending direction of the second support member 5 is perpendicular to the driving direction of the second drive member 3.

[0145] like Figures 1 to 3 As shown, the second support member 5 and the second reflector 12 are respectively connected to the two adjacent sides of the second connector 14 to make full use of the connection space of the second connector 14 and to avoid interference between the second support member 5 and the second reflector 12 during movement. The extension direction of the second support member 5 is the Z direction, and the driving direction of the second drive member 3 is the Y direction, so as to use the second support member 5 to adjust the position of the mating left and right head molds.

[0146] Optionally, the detection component is a pull-wire rangefinder, which is mounted on the base 1. The pull wire of the pull-wire rangefinder is connected to the corresponding transmission component or the corresponding support component, so that when the support component moves together with the transmission component, the pull-wire rangefinder can detect the displacement of the corresponding support component in real time, thereby facilitating the adjustment of the driving state of the corresponding driving component.

[0147] Optionally, the detection element can also be a linear displacement sensor. The linear displacement sensor is placed on the corresponding transmission element or the corresponding support element, so that the linear displacement sensor can accurately measure the linear displacement of the corresponding support element and convert the displacement signal into an electrical signal output to adjust the driving state of the corresponding driving element.

[0148] The above embodiments mainly describe the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be elaborated here.

[0149] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A clamping force measuring device, characterized in that, include: A head mold assembly, the head mold assembly including multiple head molds (100), the multiple head molds (100) being snapped together to form a human head model contour structure, each head mold (100) having an assembly part (1001); The adjustment mechanism includes a base (1) and a plurality of driving members and a plurality of supporting members disposed on the base (1). The plurality of supporting members correspond to the plurality of head molds (100) respectively, and each supporting member has a connecting part. The connecting part is adapted to the corresponding assembly part (1001) to form a detachable connection. The number of driving components does not exceed the number of supporting components. The driving ends of multiple driving components are connected to multiple supporting components in a corresponding transmission manner, so that each driving component can drive the corresponding supporting component to move in a predetermined direction, and at least some of the supporting components have different directions of movement.

2. The clamping force measuring device according to claim 1, characterized in that, One of the connecting part and the corresponding assembly part (1001) is a protrusion, and the other of the connecting part and the corresponding assembly part (1001) is a groove, which is adapted to the protrusion.

3. The clamping force measuring device according to claim 2, characterized in that, The connecting part is a sliding piece, and the mounting part (1001) is a recessed part. The sliding piece and the recessed part are engaged.

4. The clamping force measuring device according to claim 3, characterized in that, The recessed portion has a slide rail, and the slide piece is slidably connected to the slide rail.

5. The clamping force measuring device according to claim 4, characterized in that, The recess includes a first portion (10011) and a second portion (10012) along the assembly direction, the slide rail is located in the second portion (10012), and the width of the second portion (10012) is greater than the width of the first portion (10011).

6. The clamping force measuring device according to claim 1, characterized in that, The head mold assembly includes four head molds (100): a front head mold, a left head mold, a right head mold, and an upper head mold. The adjustment mechanism includes a first support member (4), a second support member (5), and a third support member (16). The first support member (4) is detachably connected to the front head mold, the second support member (5) is detachably connected to the left head mold and the right head mold, and the third support member (16) is detachably connected to the upper head mold.

7. The clamping force measuring device according to claim 6, characterized in that, The adjustment mechanism includes a first driving member (2), a second driving member (3), and a third driving member (15). The driving end of the first driving member (2) is connected to the first support member (4), the driving end of the second driving member (3) is connected to the second support member (5), and the driving end of the third driving member (15) is connected to the third support member (16). The driving directions of the first driving member (2), the second driving member (3), and the third driving member (15) are perpendicular to each other.

8. The clamping force measuring device according to claim 7, characterized in that, The adjustment mechanism further includes a second transmission component (9), the driving end of the second driving component (3) is connected to the second transmission component (9) in a transmission connection, and the second support component (5) includes a first column (51) and a second column (52) arranged in the same row along the second direction, and the first column (51) and the second column (52) are respectively connected to the second transmission component (9); Driven by the second driving member (3), the second transmission member (9) can drive the first column (51) and the second column (52) to move in opposite directions along the second direction.

9. The clamping force measuring device according to claim 8, characterized in that, The first column (51) has a first sliding member (511) on the side away from the second column (52), and the second column (52) has a second sliding member (521) on the side away from the first column (51). The first sliding member (511) forms a first connecting part, and the second sliding member (521) forms a second connecting part.

10. The clamping force measuring device according to claim 7, characterized in that, The second support member (5) includes a first sub-support member and a second sub-support member arranged in the same row along the second direction. The driving end of the second driving member (3) is connected to the first sub-support member in a transmission manner. The second sub-support member is fixed on the base (1). Driven by the second driving member (3), the first sub-support member can move along the second direction and move closer to or further away from the second sub-support member.

11. The clamping force measuring device according to claim 10, characterized in that, The first sub-support member is detachably connected to the left head mold. The second sub-support member includes a support base and a connecting rod. One end of the connecting rod passes through the support base, and the other end of the connecting rod forms a third connecting part.

12. The clamping force measuring device according to claim 11, characterized in that, The assembly part (1001) of the right head mold is a hollow sleeve, and the hollow sleeve is detachably connected to the connecting rod.

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