Instrument structure and motorcycle

Abstract

The utility model provides an instrument structure and a motorcycle, and relates to the technical field of automotive parts, and the instrument structure comprises a shell, a panel assembly and a circuit board. A mounting groove is formed in one side of the shell, and a limiting step is formed in the notch position of the mounting groove and annularly arranged in the circumferential direction of the mounting groove. The panel assembly is contained in the installation groove and connected with the limiting step in a clamped mode so that the panel assembly and the shell can be connected and define a containing cavity together. The circuit board is arranged in the accommodating cavity, and the circuit board is electrically connected with the panel assembly. According to the utility model, the space utilization rate is high, the limiting step plays a role in limiting and fixing, the panel assembly is convenient to assemble and position, the situation of installation deviation or dislocation of the panel assembly is reduced, the assembly quality of the panel assembly is improved, the assembly procedures of the panel assembly are reduced, the installation process is simplified, and the installation efficiency of the instrument structure is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a part technology field for vehicle, specifically, relate to a kind of instrument structure and motorcycle. BACKGROUND

[0002] Vehicle instrument is used to indicate, warning and fault prompt, show and remind driver. The assembly process of common vehicle instrument needs to assemble and install relevant parts, there is the situation that assembly procedure is more complicated, cause the installation efficiency of vehicle instrument is lower. UTILITY MODEL CONTENT

[0003] The utility model aims at providing a kind of instrument structure and motorcycle, space utilization is high, it is convenient to assemble and position panel assembly, improve the assembly quality of panel assembly, simplify installation process, and then improve the installation efficiency of instrument structure.

[0004] The first aspect of the utility model provides a kind of instrument structure, the instrument structure includes:

[0005] Shell, the side of the shell is provided with mounting groove, the slot opening position of the mounting groove forms limit step, the limit step is arranged around the circumference of the mounting groove;

[0006] Panel assembly, the panel assembly is housed in the mounting groove, and the panel assembly is connected with the limit step, so that the panel assembly and the shell are connected and define a containing cavity;

[0007] Circuit board, the circuit board is arranged in the containing cavity, and the circuit board is electrically connected with the panel assembly.

[0008] In a possible embodiment of the utility model, the panel assembly includes a panel and a liquid crystal screen, the panel is bonded to the limit step, one side of the liquid crystal screen is connected with the panel, and the liquid crystal screen is located between the panel and the circuit board.

[0009] In a possible embodiment of the utility model, the side of the panel away from the liquid crystal screen is a first side, the shell is provided with a second side, the first side and the second side are coplanarly arranged.

[0010] In a possible embodiment of the utility model, the limit step is provided with a plurality of limit portions, the side of the panel close to the shell is provided with a plurality of limit grooves, each limit portion is connected with a limit groove.

[0011] In a possible embodiment of the utility model, the number of limit portions is multiple, and multiple limit portions are arranged at intervals.

[0012] In a possible embodiment of the utility model, still include support spare, the support spare is abutted between the panel and the circuit board, the support spare is provided with a plurality of through -hole, the panel is provided with a plurality of button mark.

[0013] In a possible embodiment of the utility model, the circuit board is provided with a plurality of lamp spare, one the lamp spare corresponds one the through -hole.

[0014] In a possible embodiment of the utility model, the number of support spare is two, and the two support spares are arranged at opposite ends of the liquid crystal screen along a first direction.

[0015] In a possible embodiment of the utility model, the side, away from the panel assembly, of the circuit board is further provided with a wiring terminal, the mounting groove is provided with a terminal groove, the wiring terminal is inserted into the terminal groove, and the circuit board and the shell are positioned by assembling the wiring terminal and the terminal groove.

[0016] The second aspect of the utility model provides a motorcycle, comprising the instrument structure in any one of the above embodiments.

[0017] Compared with the prior art, the utility model has the advantages that: the utility model provides an instrument structure and a motorcycle, the circuit board is used for supplying power to the panel assembly, the panel assembly can be accommodated in the mounting groove of the shell, the space utilization rate is high, the panel assembly and the limiting step of the shell are clamped, the limiting step plays a limiting and fixing role, the four peripheral edge positions of the panel assembly are limited and abutted with the limiting step, so as to assemble and position the panel assembly, reduce the installation deviation or misplacement of the panel assembly, improve the assembly quality of the panel assembly, reduce the assembly process of the panel assembly, simplify the installation process, and further improve the installation efficiency of the instrument structure. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as limiting the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 The sectional structure schematic view of the instrument structure provided in some embodiments of the utility model is shown in the drawings.

[0020] Figure 2 The structure schematic view of A part in the drawings is shown. Figure 1

[0021] ​Figure 3 A three-dimensional assembly schematic view of the instrument structure provided in some embodiments of the present application is shown.

[0022] Figure 4 A structure schematic view of the B part in the middle is shown. Figure 3

[0023] Figure 5 A front structure schematic view of the instrument structure provided in some embodiments of the present application is shown.

[0024] Main component symbol explanation

[0025] 100-instrument structure; 110-housing; 111-mounting groove; 112-limiting step; 1121-limiting part; 113-second side surface; 114-terminal groove; 120-panel assembly; 121-panel; 1211-first side surface; 1212-key identification; 122-liquid crystal screen; 130-circuit board; 131-lamp part; 132-wiring terminal; 140-bracket part; 141-through hole; 142-inductive switch; X-first direction; Y-second direction; Z-third direction. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0028] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0029] ​In the description of the utility model, it needs to be explained that, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the utility model product is used, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0030] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0031] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "setting", "mounting", "connecting", "connection" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the communication inside two elements. For ordinary skilled persons in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0032] Some embodiments of the utility model will be described in detail below with reference to the drawings. In the case of no conflict, the following examples and features in the examples can be combined with each other.

[0033] Reference Figure 1 As shown in the drawings, the embodiments of the present application provide an instrument structure 100, which comprises a shell 110, a panel assembly 120 and a circuit board 130.

[0034] Specifically, combined with Figures 1 to 3As shown, one side of the shell 110 is provided with a mounting groove 111, and the notch position of the mounting groove 111 forms a limiting step 112, and the limiting step 112 is arranged around the circumference of the mounting groove 111. The panel assembly 120 is accommodated in the mounting groove 111, and the panel assembly 120 is clamped with the limiting step 112, so that the panel assembly 120 is connected with the shell 110 and defines a containing cavity together. The circuit board 130 is arranged in the containing cavity, and the circuit board 130 is electrically connected with the panel assembly 120. Accordingly, the circuit board 130 is used for supplying power to the panel assembly 120. The panel assembly 120 can be accommodated in the mounting groove 111 of the shell 110, and the space utilization rate is high. The panel assembly 120 and the limiting step 112 of the shell 110 are clamped, and the limiting step 112 plays a limiting and fixing role. The four edge positions of the panel assembly 120 are limited and abutted with the limiting step 112, so as to facilitate the assembly and positioning of the panel assembly 120. Due to the reduction of vibration during driving, the installation deviation or misplacement of the panel assembly 120 is avoided, the assembly quality of the panel assembly 120 is improved, the assembly process of the panel assembly 120 is reduced, the installation process is simplified, and the installation efficiency of the instrument structure 100 is improved.

[0035] It can be understood that the circuit board 130 realizes data acquisition, processing, display and transmission functions by integrating various sensors, processors, memories and other electronic components. The circuit board 130 can be selected from the printed circuit boards 130 available on the market, or selected as a PCBA board. The shape and size of the circuit board 130 match the shape and size of the shell 110, and the circuit board 130 can be installed in the mounting groove 111.

[0036] Reference Figure 1 and Figure 3 As shown, the instrument structure 100 has a first direction X, a second direction Y and a third direction Z, wherein the first direction X, the second direction Y and the third direction Z are arranged perpendicular to each other. For example, the first direction X is in the length direction of the instrument structure 100, the second direction Y is in the width direction of the instrument structure 100, and the third direction Z is in the height direction of the instrument structure 100. It can be understood that the above definitions are only for the purpose of understanding the relative position relationship of each part in the instrument structure 100, and should not be understood as a limitation of the present application.

[0037] In one embodiment, optionally, as Figure 2 and Figure 3As shown, the panel assembly 120 includes a panel 121 and a liquid crystal screen 122, the panel 121 is bonded to the limiting step 112, one side of the liquid crystal screen 122 is connected with the panel 121, and the liquid crystal screen 122 is located between the panel 121 and the circuit board 130, that is, the panel 121 can be limited and abutted with the limiting step 112 in a clamping manner, and the panel 121 is bonded to the limiting step 112 of the shell 110, so as to realize the connection and fixation between the panel 121 and the shell 110, the liquid crystal screen 122 is installed and connected with the panel 121, the instrument image in the liquid crystal screen 122 can be directed to one side of the panel 121 and displayed through the panel 121, and the panel 121 plays a certain protection role for the liquid crystal screen 122.

[0038] Optionally, as shown in Figure 1 and Figure 2 shown, the side of the panel 121 away from the liquid crystal screen 122 is a first side 1211, the shell 110 is provided with a second side 113, the first side 1211 and the second side 113 are coplanarly arranged, in other words, the first side 1211 and the second side 113 are located on the same plane, so that the panel 121 can be embedded in the limiting step 112 of the shell 110, and the panel 121 closes the slot of the mounting groove 111, realizing the assembly and positioning between the panel 121 and the shell 110, and the structure is compact and has better aesthetics.

[0039] Optionally, as shown in Figure 3 and Figure 4 shown, the limiting step 112 is provided with a plurality of limiting portions 1121, and the side of the panel 121 close to the shell 110 is provided with a plurality of limiting grooves, each limiting portion 1121 is clamped with one limiting groove, so that the limiting grooves of the panel 121 can be assembled and positioned with the limiting portions 1121 of the limiting step 112, the limiting portions 1121 have limiting and positioning functions, reducing the installation deviation or misplacement of the panel 121 during assembly, and improving the installation efficiency of the instrument structure 100.

[0040] In summary, the circuit board 130 of the instrument structure 100 is used for supplying power to the panel assembly 120, the panel assembly 120 can be accommodated in the mounting groove 111 of the shell 110, the space utilization rate is high, and the panel assembly 120 and the limiting step 112 of the shell 110 are clamped, the limiting step 112 plays a limiting and fixing role, so that the four peripheral edge positions of the panel assembly 120 are limited and abutted with the limiting step 112, so as to facilitate the assembly and positioning of the panel assembly 120, reduce the installation deviation or misplacement of the panel assembly 120, improve the assembly quality of the panel assembly 120, reduce the assembly process of the panel assembly 120, simplify the installation process, and further improve the installation efficiency of the instrument structure 100.

[0041] Reference Figures 1 to 3 As shown in the drawings, the embodiments of the present application provide another instrument structure 100, which comprises a housing 110, a panel assembly 120 and a circuit board 130.

[0042] Specifically, in combination with Figures 1 to 3 As shown, one side of the housing 110 is provided with a mounting groove 111, and the notch position of the mounting groove 111 forms a limiting step 112, which is circumferentially arranged around the mounting groove 111. The panel assembly 120 is accommodated in the mounting groove 111, and the panel assembly 120 is clamped with the limiting step 112, so that the panel assembly 120 is connected with the housing 110 and defines a containing cavity together. The limiting step 112 of the panel assembly 120 and the housing 110 is clamped, and the limiting step 112 plays a limiting and fixing role, so that the four edge positions of the panel assembly 120 are limited and abutted with the limiting step 112.

[0043] In this embodiment, the circuit board 130 is arranged in the containing cavity, and the circuit board 130 is electrically connected with the panel assembly 120. Accordingly, the circuit board 130 is used for supplying power to the panel assembly 120. The panel assembly 120 can be accommodated in the mounting groove 111 of the housing 110, and the space utilization rate is high. The panel assembly 120 is conveniently assembled and positioned. The installation deviation or misplacement of the panel assembly 120 is reduced during driving, the assembly quality of the panel assembly 120 is improved, the assembly process of the panel assembly 120 is reduced, the installation process is simplified, and the installation efficiency of the instrument structure 100 is improved.

[0044] In one embodiment, optionally, as Figure 2 and Figure 3As shown, the panel assembly 120 includes a panel 121 and a liquid crystal screen 122, the panel 121 is bonded to the limiting step 112, one side of the liquid crystal screen 122 is connected with the panel 121, and the liquid crystal screen 122 is located between the panel 121 and the circuit board 130, that is, the panel 121 can be limited and abutted with the limiting step 112 in a clamping manner, and in addition, the panel 121 is bonded on the limiting step 112 of the shell 110 to realize the connection and fixation between the panel 121 and the shell 110, the liquid crystal screen 122 is installed and connected with the panel 121, the instrument image in the liquid crystal screen 122 can be directed to one side of the panel 121 and displayed through the panel 121, and the panel 121 plays a certain protection role for the liquid crystal screen 122. Further, the vertical projection area of the liquid crystal screen 122 is Q1, and the vertical projection area of the panel 121 is Q2, which satisfies Q1≤Q2, that is, the surface area of the liquid crystal screen 122 is less than or equal to the surface area of the panel 121, so that the panel 121 can cover the liquid crystal screen 122, and the panel 121 can have a non-screen area to balance the display and operation space, and realize the balance between compactness and visibility of the panel assembly 120.

[0045] Optionally, as shown in Figure 1 and Figure 2 , one side of the panel 121 away from the liquid crystal screen 122 is a first side 1211, the shell 110 is provided with a second side 113, the first side 1211 and the second side 113 are coplanarly arranged, in other words, the first side 1211 and the second side 113 are located on the same plane, so that the panel 121 can be embedded in the limiting step 112 of the shell 110, and the panel 121 closes the slot of the mounting slot 111 to realize the assembly and positioning between the panel 121 and the shell 110, which is compact in structure and has better aesthetics. Exemplarily, the first side 1211 of the panel 121 and the second side 113 of the shell 110 are at the same height.

[0046] Optionally, as shown in Figure 3 and Figure 4 , the limiting step 112 is provided with a plurality of limiting portions 1121, and one side of the panel 121 close to the shell 110 is provided with a plurality of limiting grooves, each limiting portion 1121 is clamped with one limiting groove, so that the limiting grooves of the panel 121 can be assembled and positioned with the limiting portions 1121 of the limiting step 112, the limiting portions 1121 have limiting and positioning functions, which reduces the installation deviation or misplacement of the panel 121 in assembly and improves the installation efficiency of the instrument structure 100.

[0047] Optionally, as shown in Figure 4As shown, the number of the limiting parts 1121 is multiple, and the multiple limiting parts 1121 are arranged at intervals. The multiple limiting parts 1121 arranged at intervals can disperse the load. The limiting part 1121 is a limiting protrusion, and the multiple limiting protrusions are collectively used to prevent the panel 121 from moving or misplacing. The limiting protrusion is suitable for a panel 121 with a large size, and can realize the damage-free disassembly between the panel 121 and the shell 110.

[0048] In one embodiment, optionally, referring to Figure 1 and Figure 3 As shown, the instrument structure 100 further comprises a support piece 140 abutting between the panel 121 and the circuit board 130. The support piece 140 is provided with a plurality of through holes 141, and the panel 121 is provided with a plurality of key identifiers 1212. Each through hole 141 corresponds to one key identifier 1212. Correspondingly, the opposite sides of the support piece 140 are connected to the circuit board 130 and the panel 121, respectively. The support piece 140 plays a supporting role. The through hole 141 on the support piece 140 corresponds to the key identifier 1212, so that the key identifier 1212 corresponds to the circuit board 130 through the through hole 141. The key identifier 1212 can indicate the instrument monitoring function. In addition, the support piece 140 can avoid the direct contact between the circuit board 130 and the panel 121 causing a short circuit.

[0049] Further, referring to Figure 5 As shown, the circuit board 130 corresponds to the key identifier 1212 of the panel 121 through an induction switch 142. The induction switch 142 is arranged in the support piece 140. The induction switch 142 is connected to the circuit board 130 by pressing the key identifier 1212 of the panel 121 to realize touch control, and triggers the electrical signal of the circuit board 130 through the touch force conduction mode.

[0050] Optionally, referring to Figure 3 and Figure 5 As shown, the circuit board 130 is provided with a plurality of lamp pieces 131, and one lamp piece 131 corresponds to one key. In other words, the lamp piece 131 corresponds to the key identifier 1212 one by one, so as to ensure that the key identifier 1212 can be matched with the lamp piece 131 of the circuit board 130 through the through hole 141. The key forms a light path channel with the lamp piece 131 on the circuit board 130 through the through hole 141. The through hole 141 plays a role of light collection for the lamp piece 131, so as to facilitate the user to display and detect the state of the instrument at the position of the key identifier 1212. The lamp piece 131 is a LED lamp.

[0051] Optionally, as Figure 3As shown, the number of the support members 140 is two, and two of the support members 140 are respectively arranged at opposite ends of the liquid crystal screen 122 in the first direction, i.e. two of the support members 140 are arranged at opposite ends of the liquid crystal screen 122 in the length direction of the instrument structure 100, and the two support members 140 are symmetrically arranged, so that the two support members 140 can fix the relative position between the circuit board 130 and the panel 121 and disperse the pressure, and have a better technical effect.

[0052] On the basis of any one of the above embodiments, optionally, referring to Figure 1 and Figure 3 As shown, the circuit board 130 is further provided with a wiring terminal 132 on the side away from the panel assembly 120, the mounting groove 111 is provided with a terminal groove 114, the wiring terminal 132 is inserted into the terminal groove 114, and the circuit board 130 is positioned by the wiring terminal 132 and the terminal groove 114, so that the circuit board 130 is positioned by the cooperation of the wiring terminal 132 and the terminal groove 114, the terminal groove 114 protects and seals the wiring terminal 132, avoids exposure, and the wiring terminal 132 can be electrically connected with a conduction element on the motorcycle to keep the circuit board 130 in a conduction state.

[0053] The embodiment of the utility model further provides a motorcycle, the motorcycle can be a fuel motorcycle, a new energy motorcycle, a moped and the like, or any kind of motorcycle or electric vehicle, comprising the instrument structure 100 in the above embodiment, and the motorcycle comprising the instrument structure 100 has all the beneficial effects of the instrument structure 100, which will not be described in detail here.

[0054] In all examples shown and described herein, any specific values should be interpreted as merely exemplary and not as a limitation, and thus, other examples of the example embodiments can have different values.

[0055] The above-described embodiments only express several implementation manners of the utility model, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the utility model. It should be pointed out that, for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which all belong to the protection scope of the utility model.

Claims

1. An instrument structure, characterized by comprising: The utility model relates to an instrument structure, which comprises: a shell, one side of the shell is provided with a mounting groove, a slot position of the mounting groove forms a limiting step, the limiting step is annularly arranged in the circumferential direction of the mounting groove; a panel assembly, the panel assembly is accommodated in the mounting groove, and the panel assembly is clamped with the limiting step, so that the panel assembly is connected with the shell and a containing cavity is jointly defined; a circuit board, the circuit board is arranged in the containing cavity, and the circuit board is electrically connected with the panel assembly.

2. The instrument structure of claim 1, wherein, The panel assembly comprises a panel and a liquid crystal screen, the panel is bonded to the limiting step, one side of the liquid crystal screen is connected with the panel, and the liquid crystal screen is located between the panel and the circuit board.

3. The instrument structure of claim 2, wherein, The first side of the panel, which is away from the liquid crystal screen, is coplanar with the second side of the shell.

4. The instrument structure of claim 2, wherein, The limiting step is provided with a plurality of limiting parts, and one side of the panel close to the shell is provided with a plurality of limiting grooves, each limiting part is clamped with one limiting groove.

5. The instrument structure of claim 4, wherein, The number of limiting parts is multiple, and the multiple limiting parts are arranged at intervals.

6. The instrument structure of claim 2, wherein, The utility model further comprises a support piece, the support piece is abutted between the panel and the circuit board, the support piece is provided with a plurality of through holes, the panel is provided with a plurality of key marks, and each through hole corresponds to one key mark.

7. The instrument arrangement of claim 6, wherein, The circuit board is provided with a plurality of lamp pieces, and one lamp piece corresponds to one through hole.

8. The instrument structure of claim 6, wherein, The number of support pieces is two, and the two support pieces are arranged at opposite ends of the liquid crystal screen along a first direction.

9. An instrument arrangement according to any one of claims 1 to 8, characterised in that, The side, away from the panel assembly, of the circuit board is further provided with a wiring terminal, the mounting groove is provided with a terminal groove, the wiring terminal is inserted into the terminal groove, and the circuit board and the shell are assembled and positioned through the wiring terminal and the terminal groove.

10. A motorcycle characterized in that The utility model relates to an instrument structure, which comprises: a shell, one side of the shell is provided with a mounting groove, a slot position of the mounting groove forms a limiting step, the limiting step is annularly arranged in the circumferential direction of the mounting groove; a panel assembly, the panel assembly is accommodated in the mounting groove, and the panel assembly is clamped with the limiting step, so that the panel assembly is connected with the shell and a containing cavity is jointly defined; a circuit board, the circuit board is arranged in the containing cavity, and the circuit board is electrically connected with the panel assembly. The panel assembly comprises a panel and a liquid crystal screen, the panel is bonded to the limiting step, one side of the liquid crystal screen is connected with the panel, and the liquid crystal screen is located between the panel and the circuit board. The first side of the panel, which is away from the liquid crystal screen, is coplanar with the second side of the shell. The limiting step is provided with a plurality of limiting parts, and one side of the panel close to the shell is provided with a plurality of limiting grooves, each limiting part is clamped with one limiting groove. The number of limiting parts is multiple, and the multiple limiting parts are arranged at intervals. The utility model further comprises a support piece, the support piece is abutted between the panel and the circuit board, the support piece is provided with a plurality of through holes, the panel is provided with a plurality of key marks, and each through hole corresponds to one key mark. The circuit board is provided with a plurality of lamp pieces, and one lamp piece corresponds to one through hole. The number of support pieces is two, and the two support pieces are arranged at opposite ends of the liquid crystal screen along a first direction. The side, away from the panel assembly, of the circuit board is further provided with a wiring terminal, the mounting groove is provided with a terminal groove, the wiring terminal is inserted into the terminal groove, and the circuit board and the shell are assembled and positioned through the wiring terminal and the terminal groove. The utility model relates to an instrument structure, which comprises:

Images