Fixing device and testing system

Abstract

The utility model relates to the technical field of vehicle NVH (Noise Vibration and Harshness) testing, and particularly discloses a fixing device and a testing system, the fixing device is used for fixing a detector, the fixing device comprises an elastic band, the elastic band is provided with a first connecting piece group, and two ends of the elastic band are detachably connected through the first connecting piece group; a second connecting piece group is arranged between the adjusting belt and the elastic belt, the adjusting belt is detachably mounted on the elastic belt through the second connecting piece group, and the mounting position of the adjusting belt in the extending direction of the elastic belt can be adjusted through the second connecting piece group; and the at least one first fixing band is arranged on the adjusting band, and the first fixing band is used for fixing the detector. The fixing device and the test system can adapt to mounting bases of different specifications, are high in applicability, and can ensure the test position of the detector and ensure the test effect.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle NVH testing, and particularly relates to a fixing device and a testing system. Background Technique

[0002] In the NVH (Noise, Vibration, Harshness) testing of vehicles, it is usually necessary to arrange detectors such as microphones in the sound field area near the human ear of the seat to detect the time-domain or frequency-domain signals of the sound pressure level near the human ear of each seat in the vehicle.

[0003] In some technical solutions, a rigid fixing structure is used to arrange a microphone on the seat headrest. The rigid fixing structure includes a bracket and a clamp fixed on the bracket. The bracket is clamped on the insertion rod of the seat headrest or other rod systems of the seat headrest through bolts, etc., and the clamp is used to clamp and fix the microphone.

[0004] However, in order to meet the personalized needs of users, for some seats, such as racing seats, the seat headrest and the seat body are integrally arranged, and no longer use rod systems such as insertion rods to connect. Moreover, there are also large differences in the size and shape structure of the seat headrest part in different types of seats. In the related technology, the rigid fixing structure can only be applied to the seat headrests with structures such as insertion rods, and can only be applied to the seat headrests within a predetermined size range. And in the rigid fixing structure of the related technology, the position of the clamp is fixed. Due to the size differences of the seat headrests, when performing tests at both ears, it is difficult for the rigid fixing structure to ensure that the test positions of the microphones at both ears all meet the test requirements.

[0005] Therefore, the applicability of the rigid fixing structure in the related technology is poor, and it is difficult to meet the NVH testing requirements of various automobiles with seats of different specifications. Summary of the Utility Model

[0006] One of the purposes of the present utility model is to provide a fixing device to solve the technical problem of poor applicability of the microphone fixing structure in the existing vehicle NVH testing; the second purpose is to provide a testing system.

[0007] In order to achieve the above purposes, the technical solutions adopted by the present utility model are as follows:

[0008] A fixing device for fixing a detector, the fixing device comprising: an elastic band, a first connecting member group is arranged on the elastic band, and two ends of the elastic band are detachably connected through the first connecting member group; at least one adjusting band, a second connecting member group is arranged between the adjusting band and the elastic band, the adjusting band is detachably mounted on the elastic band through the second connecting member group, and the adjusting band can adjust its mounting position in the extending direction of the elastic band through the second connecting member group; at least one first fixing band, arranged on the adjusting band, and the first fixing band is used for fixing the detector.

[0009] Optionally, a third connecting member group is arranged on the adjusting band, the upper end and the lower end of the adjusting band can be folded and connected through the third connecting member group to form a receiving space, and the connecting part of the elastic band and the adjusting band is placed in the receiving space.

[0010] Optionally, the fixing device further comprises a first anti-slip pad, the first anti-slip pad is arranged on the adjusting band and is on the same side of the adjusting band as the first fixing band; when the upper end and the lower end of the adjusting band are folded and connected, the first anti-slip pad is located inside the elastic band, and the first fixing band is located outside the elastic band.

[0011] Optionally, a fourth connecting member group is arranged on the first fixing band, and two ends of the first fixing band are detachably connected through the fourth connecting member group to fix the detector.

[0012] Optionally, two first fixing bands are arranged on the adjusting band at intervals in the extending direction of the elastic band.

[0013] Optionally, the fixing device further comprises a second fixing band, the second fixing band is arranged on the elastic band, and in the extending direction of the elastic band, the second fixing band is arranged at intervals from the first fixing band.

[0014] Optionally, the fixing device further comprises a box body for receiving the detector; the box body is arranged outside the elastic band; and at least part of the structure of the elastic band is slidably inserted into the box body.

[0015] Optionally, a second anti-slip pad is arranged on the outer wall of the box body, and the second anti-slip pad is located inside the elastic band.

[0016] Optionally, at least two through holes are provided on the box body, and the through holes penetrate through the inside and the outside of the box body.

[0017] A test system for NVH testing, comprising: a detector and the fixing device as described above, and the detector is fixed through the fixing device.

[0018] Advantages of the present utility model:

[0019] Using the technical solution of the present utility model, the detector is fixed on the first fixing belt and detachably installed on the elastic belt through the adjusting belt. The elastic belt is detachably fixed on the installation base such as the seat headrest for testing by using the first connecting member group. During actual testing, due to its own elasticity, the elastic belt can adapt to installation bases of different size specifications, and the adjusting belt can adjust the installation position in the extending direction of the elastic belt through the second connecting member group to adjust the testing position of the detector, so as to ensure that the testing position of the detector can meet the testing requirements. The fixing device and testing system of the present utility model can adapt to installation bases of different specifications, have high applicability, and can ensure the testing position of the detector to guarantee the testing effect. Description of the Drawings

[0020] Figure 1 Schematic diagram of the installation of the elastic belt and the adjusting belt of the present utility model;

[0021] Figure 2 Schematic diagram of the outer side structure of the elastic belt in the first embodiment of the present utility model;

[0022] Figure 3 Schematic diagram of the inner side structure of the elastic belt in the first embodiment of the present utility model;

[0023] Figure 4 Schematic diagram of the outer side structure of the adjusting belt of the present utility model;

[0024] Figure 5 Schematic diagram of the inner side structure of the adjusting belt of the present utility model;

[0025] Figure 6 Stereogram of the fixing device of the present utility model in the applied state in the first embodiment;

[0026] Figure 7 Rear view of the fixing device of the present utility model in the applied state in the first embodiment;

[0027] Figure 8 Schematic diagram of the outer side structure of the elastic belt in the second embodiment of the present utility model;

[0028] Figure 9 Schematic diagram of the inner side structure of the elastic belt in the second embodiment of the present utility model;

[0029] Figure 10 Schematic diagram of the structure of the box body of the present utility model;

[0030] Figure 11 Schematic diagram of the installation of the box body and the elastic belt of the present utility model;

[0031] Figure 12 Stereogram of the fixing device of the present utility model in the applied state in the second embodiment;

[0032] Figure 13 The rear view of the fixing device in the application state of the second embodiment of the present utility model.

[0033] Wherein, 1 - elastic band; 11 - first connecting member group; 111 - first hook portion; 112 - first furry portion; 2 - adjusting band; 21 - second connecting member group; 211 - second hook portion; 212 - second furry portion; 22 - third connecting member group; 221 - third hook portion; 222 - third furry portion; 3 - first fixing band; 31 - fourth connecting member group; 311 - fourth hook portion; 312 - fourth furry portion; 4 - first anti-slip pad; 5 - second fixing band; 51 - fifth connecting member group; 511 - fifth hook portion; 512 - fifth furry portion; 513 - figure-eight buckle; 6 - box body; 61 - first accommodating cavity; 62 - second accommodating cavity; 63 - first through hole; 64 - second through hole; 65 - second anti-slip pad; 7 - seat headrest; 8 - detector; 9 - wire harness. Detailed implementation manners

[0034] The following will describe the implementation manners of the present utility model with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be understood that the preferred embodiments are only for illustrating the present utility model, rather than for limiting the protection scope of the present utility model.

[0035] It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present utility model in a schematic manner. Therefore, only the components related to the present utility model are shown in the drawings, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0036] The present utility model provides a fixing device for fixing the detector 8, and the detector 8 includes but is not limited to a microphone. The fixing device of the present utility model will be described below in combination with Embodiments 1 to 3.

[0037] Embodiment 1

[0038] As Figures 1-7As shown in the figure, the fixing device of this embodiment includes an elastic band 1, an adjusting band 2, and a first fixing band 3 provided on the adjusting band 2. Among them, a first connecting member group 11 is provided on the elastic band 1, and both ends of the elastic band 1 are detachably connected through the first connecting member group 11. At least one adjusting band 2 is provided, and a second connecting member group 21 is provided between the adjusting band 2 and the elastic band 1. The adjusting band 2 is detachably mounted on the elastic band 1 through the second connecting member group 21, and the mounting position of the adjusting band 2 in the extending direction of the elastic band 1 can be adjusted through the second connecting member group 21. At least one first fixing band 3 is provided, and the first fixing band 3 is used to fix the detector 8.

[0039] It should be noted that the extending direction of the elastic band 1 refers to Figure 2 and Figure 3 the left - right direction in. It can be understood that during actual use, both ends of the elastic band 1 are connected through the first connecting member group 11 and fixed on the mounting base for testing such as the seat headrest 7. The elastic band 1 forms a closed - loop structure around the circumference of the mounting base. At this time, the extending direction of the elastic band 1 is the circumferential direction of this closed - loop structure. That is to say, during actual use, the adjusting band 2 can adjust its mounting position in the circumferential direction of the closed - loop structure formed by the elastic band 1 through the second connecting member group 21, thereby realizing the adjustment of the position of the adjusting band 2 in the circumferential direction of the mounting base.

[0040] In this embodiment, the detector 8 is fixed on the first fixing band 3 and is detachably mounted on the elastic band 1 through the adjusting band 2. The elastic band 1 is detachably fixed on the mounting base for testing such as the seat headrest 7 by using the first connecting member group 11. During actual testing, due to its own elasticity, the elastic band 1 can adapt to mounting bases of different size specifications, and the adjusting band 2 can adjust its mounting position in the extending direction of the elastic band 1 to adjust the testing position of the detector 8, so as to ensure that the testing position of the detector 8 can meet the testing requirements. The fixing device of the present utility model can adapt to mounting bases of different specifications, has good applicability, and can ensure that the testing position of the detector 8 meets the testing requirements, guaranteeing the testing effect.

[0041] In this embodiment, the elastic band 1 is a flexible structure, such as an elastic band, etc., with a simple structure, small occupied space, and easy to produce and manufacture.

[0042] In this embodiment, the first connecting member group 11 can be a snap fastener or a magic tape, etc., which is convenient for disassembly and assembly, and can adjust the connection length of the elastic band 1 to adapt to mounting bases of different sizes.

[0043] Exemplarily, the first connector group 11 is a Velcro, specifically including a first hook portion 111 and a first fur portion 112, the first hook portion 111 and the first fur portion 112 are respectively arranged at two ends of the elastic band 1, specifically the left and right ends, and are respectively located on the outside and inside of the elastic band 1. Figure 2 and 3 As shown, Figure 2 The schematic diagram of the structure of the outer side of the elastic band 1 is shown, and the first hook portion 111 is connected to the outer side of the elastic band 1 and is located at the right end of the elastic band 1; Figure 3 The schematic diagram of the structure of the inner side of the elastic band 1 is shown, and the first hairy portion 112 is connected to the inner side of the elastic band 1 and is located at the left end of the elastic band 1. Alternatively, exemplarily, the first hook portion 111 is connected to the inner side of the elastic band 1, and the first hairy portion 112 is connected to the outer side of the elastic band 1. Alternatively, exemplarily, the first hook portion 111 is located at the left end of the elastic band 1, and the first hairy portion 112 is located at the right end of the elastic band 1.

[0044] Exemplarily, the first hook portion 111 and the first hair portion 112 can be connected to the elastic band 1 by bonding, sewing, etc., and the first hook portion 111 and the first hair portion 112 both extend a certain length in the length direction of the elastic band 1 to facilitate adjusting the connection length of the elastic band 1.

[0045] The present application does not impose any specific limitation on the extension lengths of the first hook portion 111 and the first hair portion 112 , as long as they can be applied to mounting bases of various sizes and meet testing requirements.

[0046] It should be noted that, in actual use, the outer side of the elastic band 1 is the side away from the mounting base, and the inner side of the elastic band 1 is the side close to the mounting base.

[0047] Furthermore, the utility model does not specifically limit the number of adjustment straps 2, and the number of adjustment straps 2 can be one, two, three or other numbers, as long as the test requirements can be met. Taking the NVH test of a vehicle, in which the sound signals of both ears need to be collected as an example, illustratively, two adjustment straps 2 are provided, and the first fixing straps 3 on the two adjustment straps 2 respectively fix a detector 8. The two adjustment straps 2 are respectively installed on the elastic strap 1 through the second connecting member group 21, and the two detectors 8 are respectively arranged on the left and right sides of the mounting base through the second connecting member group 21 to collect sound signals for the left and right ears respectively.

[0048] In this embodiment, the second connector group 21 can also be a snap fastener or a magic tape, etc., which is convenient for disassembly and assembly and is also convenient for adjusting the relative position between the elastic band 1 and the adjusting band 2 to meet diverse test requirements. For example, when it is necessary to collect sound signals from both ears, with the fixing device arranged like this, facing headrest seats of different sizes, it can quickly adjust the installation position of the adjusting band 2 according to the actual structure and size of the headrest seat to ensure that the test positions of the detectors 8 at the left and right ears meet the test requirements, and it has good applicability.

[0049] Exemplarily, the second connector group 21 is a magic tape, specifically including a second hook part 211 and a second fluffy part 212. The second hook part 211 and the second fluffy part 212 are respectively arranged on the elastic band 1 and the adjusting band 2. As Figure 4 shown, Figure 4 Fig. shows a schematic structural diagram of the outer side of the adjusting band 2. The second hook part 211 is connected to the outer side of the adjusting band 2 and extends along the length direction of the adjusting band 2; as Figure 3 shown, the second fluffy part 212 is connected to the inner side of the elastic band 1 and extends along the length direction of the elastic band 1. It should be noted that Figure 4 and Figure 5 the left - right direction in Figs. is the length direction of the adjusting band 2, and the extending direction of the above - mentioned elastic band 1 is the length direction of the elastic band 1. Among them, the second fluffy part 212 and the first fluffy part 112 are arranged at intervals in the length direction of the elastic band 1, or the second fluffy part 212 and the first fluffy part 112 are connected into an integral structure in the length direction of the elastic band 1. In this embodiment, in the extending direction of the elastic band 1, the second fluffy part 212 covers the elastic band 1 as much as possible so that the adjusting band 2 can be installed at any position in the extending direction of the elastic band 1.

[0050] Or, exemplarily, the second hook part 211 is connected to the inner side of the elastic band 1 and extends along the length direction of the elastic band 1; the second fluffy part 212 is connected to the outer side of the adjusting band 2 and extends along the length direction of the adjusting band 2. And, the first hook part 111 is arranged on the inner side of the elastic band 1. The second hook part 211 and the first hook part 111 are arranged at intervals in the length direction of the elastic band 1, or the second hook part 211 and the first hook part 111 are connected into an integral structure in the length direction of the elastic band 1.

[0051] Exemplarily, the second hook part 211 and the second fluffy part 212 can be connected to the elastic band 1 and the adjusting band 2 by means of bonding, sewing, etc.

[0052] Furthermore, in this embodiment, as Figure 4 and 5As shown, a third connecting member group 22 is provided on the adjusting belt 2. The upper and lower ends of the adjusting belt 2 can be folded and connected through the third connecting member group 22 to form a receiving space, and the connecting portion of the elastic belt 1 and the adjusting belt 2 is placed in the receiving space. It should be noted that the upper and lower ends of the adjusting belt 2 respectively refer to Figure 4 and Figure 5 the two ends in the up and down direction in Figure 4 and Figure 5 the two ends in the left and right direction in

[0053] In this embodiment, the adjusting belt 2 is installed on the elastic belt 1 through the above-mentioned second connecting member group 21, and the upper and lower ends of the adjusting belt 2 are folded and connected through the third connecting member group 22. At this time, the upper and lower ends of the elastic belt 1 are connected to form the above-mentioned receiving space, and the connecting portion of the elastic belt 1 and the adjusting belt 2 is placed in the receiving space. That is, when the adjusting belt 2 is installed on the elastic belt 1, the adjusting belt 2 can cover the inner and outer sides of the elastic belt 1, so that the adjusting belt 2 is not easy to fall off the elastic belt 1, thereby improving the installation stability of the adjusting belt 2 and further improving the stability of the test position of the detector 8.

[0054] In this embodiment, the third connecting member group 22 can also be a snap fastener or a magic tape, etc., which is convenient for disassembly and assembly.

[0055] Exemplarily, the third connecting member group 22 includes a third hook portion 221 and a third hair portion 222. The third hook portion 221 and the third hair portion 222 are respectively provided at the upper and lower ends of the adjusting belt 2, and are respectively located on the inner and outer sides of the elastic belt 1. As Figure 4 and 5 shown, Figure 4 shows a schematic structural diagram of the outer side of the adjusting belt 2. The third hook portion 221 is connected to the outer side of the adjusting belt 2 and is located at the lower end of the adjusting belt 2; Figure 5 shows a schematic structural diagram of the inner side of the adjusting belt 2. The third hair portion 222 is connected to the inner side of the adjusting belt 2 and is located at the upper end of the adjusting belt 2. Or, exemplarily, the third hook portion 221 is connected to the inner side of the adjusting belt 2, and the third hair portion 222 is connected to the outer side of the adjusting belt 2. Or, exemplarily, the third hook portion 221 is located at the upper end of the adjusting belt 2, and the third hair portion 222 is located at the lower end of the adjusting belt 2.

[0056] Exemplarily, the third hook portion 221 and the third hair portion 222 can be connected to the adjusting belt 2 by bonding, sewing, etc., and both the third hook portion 221 and the third hair portion 222 extend a certain length in the length direction of the adjusting belt 2 to ensure the stability of the connection.

[0057] Further, in this embodiment, the fixing device further includes a first anti-slip pad 4, which is disposed on the adjusting band 2 and on the same side of the adjusting band 2 as the first fixing band 3. When the upper and lower ends of the adjusting band 2 are folded and connected, the first anti-slip pad 4 is located inside the elastic band 1, and the first fixing band 3 is located outside the elastic band 1. With the fixing device arranged in this way, during use, the elastic band 1 is fixed to the mounting base by the first connecting member group 11, and under its own elastic action, the first anti-slip pad 4 inside is pressed against the mounting base. The first anti-slip pad 4 can increase the static friction between the elastic band 1 and the mounting base to prevent the elastic band 1 from detaching due to reasons such as the surface of the mounting base being too smooth or inclined after installation.

[0058] As Figures 3-5 shown, the second hook portion 211 and the second fuzzy portion 212 are respectively disposed on the outer side of the adjusting band 2 and the inner side of the elastic band 1; the first anti-slip pad 4 is connected to the inner side of the adjusting band 2 and is located between the upper and lower ends of the adjusting band 2; the above-mentioned first fixing band 3 is connected to the inner side of the adjusting band 2 and is located at the lower end of the adjusting band 2. In this way, during use, the adjusting band 2 is connected to the inner side of the elastic band 1 through the second connecting member group 21, so that the first anti-slip pad 4 and the first fixing band 3 connected to the inner side of the adjusting band 2 are placed inside the elastic band 1; then, the upper and lower ends of the adjusting band 2 are folded towards the outer side of the elastic band 1 and connected, so that the first fixing band 3 connected to the lower end of the elastic band 1 is folded to the outer side of the elastic band 1, while the first anti-slip pad 4 is left inside the elastic band 1.

[0059] Alternatively, by way of example, the first fixing band 3 can also be connected to the upper end of the elastic band 1.

[0060] Exemplarily, the first anti-slip pad 4 can be bonded to the adjusting band 2, and the first anti-slip pad 4 extends along the length direction of the adjusting band 2 (in the direction from the left end to the right end). Preferably, the set length of the first anti-slip pad 4 is the same as the set length of the adjusting band 2, or the set length of the first anti-slip pad 4 is slightly less than the set length of the adjusting band 2.

[0061] Exemplarily, the first fixing band 3 can be bonded or sewn to the adjusting band 2.

[0062] In addition, the present utility model does not specifically limit the number of first fixing bands 3 provided on each adjusting band 2. The first fixing band 3 can be provided with one, two, three or other numbers, as long as the function of fixing the detector 8 can be achieved.

[0063] Preferably, in the extending direction of the elastic band 1, two first fixing bands 3 are spaced on the adjusting band 2, and a predetermined length is spaced between the two first fixing bands 3. In actual application, the detector 8 usually has a unified specification. By setting two first fixing bands 3 with a predetermined length interval, when the detector 8 is installed on the first fixing band 3, the installation position of the detector 8 on the installation base can be positioned, so as to be installed in place at one time and avoid repeatedly adjusting the installation position of the detector 8.

[0064] Exemplarily, in the extending direction of the elastic band 1, three first fixing bands 3 are spaced on the adjusting band 2, and a predetermined length is spaced between the two first fixing bands 3 at both ends among the three first fixing bands 3 to achieve the positioning function of the detector 8.

[0065] It should be noted that the present utility model does not limit the specific value of the above-mentioned predetermined length, and this length depends on the set length of the detector 8. During actual manufacturing, the value of this predetermined length can be determined according to the length of the detector 8 and the requirements of the detection position.

[0066] Further, in this embodiment, a fourth connecting member group 31 is provided on the first fixing band 3, and both ends of the first fixing band 3 are detachably connected through the fourth connecting member group 31 to fix the detector 8. Among them, the fourth connecting member group 31 can also be a mother-and-son buckle or a magic tape, etc., which is convenient for disassembling and assembling the detector 8.

[0067] Exemplarily, the fourth connecting member group 31 is a magic tape, specifically including a fourth hook part 311 and a fourth hairy part 312. The fourth hook part 311 and the fourth hairy part 312 are respectively arranged at both ends of the first fixing band 3, specifically the upper and lower ends, and are respectively located on both sides of the first fixing band 3, that is, the side close to the adjusting band 2 and the side far from the adjusting band 2. Among them, the upper and lower ends of the first fixing band 3 specifically refer to Figure 5 the two ends in the up-and-down direction. Exemplarily, as Figure 5 shown, the fourth hook part 311 is located at the lower end of the first fixing band 3, and the fourth hairy part 312 is located at the upper end of the first fixing band 3. Or, exemplarily, the fourth hook part 311 is located at the upper end of the first fixing band 3, and the fourth hairy part 312 is located at the lower end of the first fixing band 3. Exemplarily, the fourth hook part 311 is located on the side of the first fixing band 3 close to the adjusting band 2, and the fourth hairy part 312 is located on the side of the first fixing band 3 far from the adjusting band 2; or, the fourth hook part 311 is located on the side of the first fixing band 3 far from the adjusting band 2, and the fourth hairy part 312 is located on the side of the first fixing band 3 close to the adjusting band 2.

[0068] Exemplarily, the fourth hook part 311 and the fourth hairy part 312 can be connected to the first fixing band 3 by bonding, sewing or other means.

[0069] Exemplarily, the first fixing strap 3 is flexible, and the first fixing strap 3 may be elastic or inelastic.

[0070] Furthermore, in this embodiment, the fixing device further includes a second fixing strap 5, which is disposed on the elastic strap 1, and in the extending direction of the elastic strap 1, the second fixing strap 5 is spaced apart from the first fixing strap 3. As Figure 6 and 7 shown, when the fixing device is installed on the mounting base, the second fixing strap 5 is spaced apart from the first fixing strap 3. After the first fixing strap 3 fixes the detector 8 to the mounting base, the second fixing strap 5 can fix the wire harness 9 connected to the detector 8, so as to prevent the wire harness 9 from pulling the detector 8 by an external force and dragging the detector 8 off or even damaging the detector 8.

[0071] As Figure 2 and 3 shown, the second fixing strap 5 is connected to the elastic strap 1 and is arranged crosswise with the elastic strap 1. Preferably, the second fixing strap 5 is arranged crosswise with the elastic strap 1 in a cross shape. Exemplarily, the second fixing strap 5 includes an upper half and a lower half. The upper half is connected to the upper end of the elastic strap 1, and the lower half is connected to the lower end of the elastic strap 1. Among them, the upper end and the lower end of the elastic strap 1 refer to Figure 2 and Figure 3 the two ends of the elastic strap 1 in the up and down directions.

[0072] Specifically, a fifth connecting member group 51 is provided on the second fixing strap 5, and the upper half and the lower half of the second fixing strap 5 are detachably connected through the fifth connecting member group 51.

[0073] Exemplarily, the fifth connecting member group 51 is a magic tape, specifically including a fifth hook portion 511 and a fifth hair portion 512. The fifth hook portion 511 and the fifth hair portion 512 are respectively located on both sides of the second fixing strap 5, that is, the side close to the elastic strap 1 and the side far from the elastic strap 1, and the fifth hook portion 511 and the fifth hair portion 512 are respectively provided on the upper half and the lower half.

[0074] Or, as Figure 2 and Figure 3 shown, exemplarily, the fifth connecting member group 51 includes a fifth hook portion 511, a fifth hair portion 512 and a Japanese character buckle 513. Among them, the fifth hook portion 511 and the second hair portion 212 are located on the same side of the second fixing strap 5. Specifically, as Figure 3 shown, the fifth hook portion 511 and the fifth hair portion 512 are both provided on the upper half and are spaced apart in the up and down direction of the second fixing strap 5; the Japanese character buckle 513 is provided on the lower half. When in use, the upper half passes through the Japanese character buckle 513 and turns to achieve the adhesion between the fifth hook portion 511 and the fifth hair portion 512.

[0075] Example Two

[0076] As Figures 8-13 shown, in this embodiment, the adjustment belt 2, the first fixing belt 3, and the connection manner between the adjustment belt 2 and the elastic belt 1 are the same as those in Example One, and will not be elaborated here. The difference between this embodiment and Example One is that, as Figure 8 and 9 shown, in this embodiment, the above-mentioned second fixing belt 5 is not provided on the elastic belt 1.

[0077] In this embodiment, the fixing device further includes a box body 6 for accommodating the detector 8. The box body 6 is arranged on the outer side of the elastic belt 1; and at least part of the structure of the elastic belt 1 is slidably inserted into the box body 6. In practical applications, the detector 8 usually has a code and needs to be placed in a storage box with a corresponding code after use. In this embodiment, by slidably inserting at least part of the structure of the elastic belt 1 into the box body 6, the box body 6 corresponding to the detector 8 can be integrated on the fixing device, the box body 6 is not easily lost, and there is no need to find the corresponding storage box according to the number after the detection is completed, saving time. Moreover, the elastic belt 1 can be retracted into the box body 6 by pulling, and the adjustment belt 2 can also be accommodated in the box body 6 after being detached from the elastic belt 1. The fixing device and the detector 8 can be provided in a matching manner, saving time and improving the detection efficiency.

[0078] In this embodiment, the box body 6 is entirely made of a lightweight material, such as plastic, to avoid being too heavy and affecting the fixation of the detector 8. And as Figure 10 shown, a first accommodation cavity 61 and a second accommodation cavity 62 are formed in the box body 6. The first accommodation cavity 61 can be filled with a waterproof and moisture-proof material, such as EVA (ethylene-vinyl acetate copolymer) material, and a detector placement space with the same size as the detector 8 is reserved; at least part of the structure of the elastic belt 1 is slidably inserted into the second accommodation cavity 62 of the box body 6 to facilitate retracting the elastic belt 1 into the second accommodation cavity 62 by pulling.

[0079] Exemplarily, the box body 6 includes a main body and a cover body, and the cover body is openably and closably covered on the top of the main body. Exemplarily, the first side of the cover body is rotatably connected to the first side of the main body, and the second side of the cover body is detachably connected to the second side of the main body. Exemplarily, the second side of the cover body and the second side of the main body can be connected by structures such as a buckle or a magnetic snap. The above-mentioned first accommodation cavity 61 and the above-mentioned second accommodation cavity 62 are opened in the main body. Exemplarily, the box body 6 can be constructed in a cuboid shape, a cube shape or a cylindrical shape, etc.

[0080] Exemplarily, at least two through holes are provided on the box body 6, and the through holes penetrate the inside and outside of the box body 6. The through holes include a first through hole 63 and a second through hole 64.

[0081] Specifically, Figure 11 As shown, the first through hole 63 is formed on the body and is located on the side of the body away from the cover. More specifically, two first through holes 63 are provided, and the two first through holes 63 are provided corresponding to the second accommodating cavity 62 and communicate with the second accommodating cavity 62. The first through hole 63 can be configured as a long hole, and the length of the long hole is equal to or slightly greater than the width of the elastic band 1 (i.e. Figure 8 and Figure 9 The elastic band 1 can be inserted into the box body 6 through the first of the two first through holes 63, and can be inserted out of the box body 6 through the second of the two first through holes 63, so that part of the structure of the elastic band 1 is located inside the box body 6, and part of the structure is located outside the box body 6. When storing, the elastic band 1 can be pulled up inside the box body 6 to be stored in the box body 6.

[0082] Specifically, the second through-hole 64 is opened on the main body, and the second through-hole 64 is arranged corresponding to the second accommodating cavity 62 and is connected to the second accommodating cavity 62. There are at least two second through-holes 64, and at least two second through-holes 64 can allow the wiring harness 9 to pass through the box body 6. Exemplarily, the second accommodating cavity includes a bottom wall and a side wall, the bottom wall is located on the side of the main body away from the cover body, and the side wall is located between the bottom wall and the cover body. The above-mentioned at least two second through-holes 64 can be respectively arranged on the bottom wall and the side wall. Exemplarily, there are two second through-holes 64. Or, as Figure 10 As shown, three second through holes 64 are provided. Exemplarily, the second through holes 64 can be configured as round holes, square holes, etc.

[0083] like Figure 12 and 13 As shown, when the fixing device is installed on the mounting base, after the first fixing belt 3 fixes the detector 8 on the mounting base, the wire harness 9 connected to the detector 8 can pass through the first of the at least two second through holes 64 into the second accommodating cavity 62, and pass through the second one to the outside of the box body 6. In addition, in actual use, a certain length of the wire harness 9 can be reserved in the second accommodating cavity 62 to leave a margin when the wire harness 9 is pulled by external force, so as to prevent the wire harness 9 from pulling the detector 8, and the detector 8 is pulled down or even damaged.

[0084] In this embodiment, the outer wall of the box body 6 is provided with a second anti-skid pad 65, and the second anti-skid pad 65 is located on the inner side of the elastic band 1. Figure 11As shown, the second anti-slip pad 65 is disposed on a side of the body facing away from the cover body and is located between two first perforations 63. Since a partial structure of the elastic band 1 penetrates into the box body 6 through the first one of the two first perforations 63 and exits the box body 6 through the second one of the two first perforations 63, the structure of the elastic band 1 between the two first perforations 63 is located inside the box body 6, so that the second anti-slip pad 65 can be located inside the elastic band 1. For the fixing device arranged in this way, when in use, the elastic band 1 is fixed on the mounting base by the first connecting member group 11, and under the action of its own elasticity, the second anti-slip pad 65 on the box body 6 is pressed against the mounting base, and the second anti-slip pad 65 can further increase the static friction force between the elastic band 1 and the mounting base.

[0085] Embodiment III

[0086] This embodiment is not shown in the figure. Each structure of the fixing device in this embodiment is the same as that in Embodiment II, and will not be described in detail here. The difference between this embodiment and Embodiment II is that the fixing device further includes a second fixing band 5. The second fixing band 5 is arranged on the elastic band 1, and in the extending direction of the elastic band 1, the box body 6, the second fixing band 5 and the first fixing band 3 are arranged at intervals. Among them, the setting manner of the second fixing band 5 is the same as that in Embodiment I and will not be described in detail here.

[0087] The present utility model further provides a test system for NVH testing. The test system includes a detector 8 and the fixing device described in any one of the above embodiments. The detector 8 is fixed by the fixing device. Since the test system of the present utility model includes the above fixing device, therefore, the test system of the present utility model has the same technical effects as the fixing device of the present utility model and will not be described in detail here.

[0088] The above embodiments are only preferred embodiments given to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present utility model are within the protection scope of the present utility model.

Claims

1. A fixing device, characterized in that, For fixing a detector (8), the fixing device includes: An elastic band (1) provided with a first connecting member group (11) thereon, and both ends of the elastic band (1) are detachably connected through the first connecting member group (11); At least one adjusting band (2), with a second connecting member group (21) provided between the adjusting band (2) and the elastic band (1), the adjusting band (2) is detachably mounted on the elastic band (1) through the second connecting member group (21), and the adjusting band (2) can adjust its mounting position in the extending direction of the elastic band (1) through the second connecting member group (21); At least one first fixing band (3) provided on the adjusting band (2), and the first fixing band (3) is used for fixing the detector (8).

2. The fixing device according to claim 1, wherein A third connecting member group (22) is provided on the adjusting band (2), the upper and lower ends of the adjusting band (2) can be folded and connected through the third connecting member group (22) to form a receiving space, and the connecting part of the elastic band (1) and the adjusting band (2) is placed in the receiving space.

3. The fixing device according to claim 2, characterized in that, It further includes a first anti-slip pad (4), the first anti-slip pad (4) is provided on the adjusting band (2) and is on the same side of the adjusting band (2) as the first fixing band (3); when the upper and lower ends of the adjusting band (2) are folded and connected, the first anti-slip pad (4) is located inside the elastic band (1), and the first fixing band (3) is located outside the elastic band (1).

4. The fixing device according to claim 1, characterized in that, A fourth connecting member group (31) is provided on the first fixing band (3), and both ends of the first fixing band (3) are detachably connected through the fourth connecting member group (31) to fix the detector (8).

5. The fixing device according to claim 1, wherein In the extending direction of the elastic band (1), two of the first fixing bands (3) are spaced apart on the adjusting band (2).

6. The fixing device according to claim 1, characterized in that, It further includes a second fixing band (5), the second fixing band (5) is provided on the elastic band (1), and in the extending direction of the elastic band (1), the second fixing band (5) is spaced apart from the first fixing band (3).

7. The fixing device according to any one of claims 1-6, characterized in that It further includes a box body (6) for accommodating the detector (8); the box body (6) is provided outside the elastic band (1); and at least part of the structure of the elastic band (1) is slidably inserted into the box body (6).

8. The fixing device according to claim 7, characterized in that, An outer wall of the box body (6) is provided with a second anti-slip pad (65), and the second anti-slip pad (65) is located inside the elastic band (1).

9. The fixing device according to claim 7, characterized in that, At least two through holes are provided on the box body (6), and the through holes penetrate the inside and outside of the box body (6).

10. A test system, characterized in that, For NVH testing, it includes: a detector (8) and the fixing device according to any one of claims 1-9, and the detector (8) is fixed through the fixing device.

Images