Battery compartment structure and handheld thermal imaging device equipped with same

Abstract

The utility model relates to the technical field of detection equipment, and provides a battery compartment structure and a handheld thermal imaging device equipped with the same. The battery compartment structure comprises a main body compartment, a positive electrode assembly and a negative electrode assembly, each of the positive electrode assembly and the negative electrode assembly comprises a switching fence part and a functional part arranged on the switching fence part, the two switching fence parts are connected to the two ends, in the axial direction of the main body bin, of the main body bin respectively, a cavity used for containing a battery is defined by the switching fence parts and the main body bin jointly, and the two functional parts are located in the cavity and used for abutting against a battery positive electrode and a battery negative electrode respectively; wherein the main body bin is made of magnesium alloy. The battery compartment structure provided by the utility model has good heat dissipation performance and light weight design, so that the long-time stable work of the handheld thermal imaging device is met.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of detection equipment, in particular to a battery compartment structure and a handheld thermal imaging device provided with the same. BACKGROUND

[0002] Most handheld thermal imaging telescopes need to meet long standby time, and therefore are configured with battery power supply. The battery is stored in the battery compartment, and the battery power supply will generate heat, which requires the battery compartment to have good heat dissipation performance. At the same time, due to the need for users to hold the handheld thermal imaging telescope for a long time, it is required to have a small weight.

[0003] In the related art, in order to meet the lightweight design, the battery compartment is usually made of light materials such as plastic or plastic, however, such a setting causes poor heat dissipation effect of the battery compartment. Therefore, in order to better dissipate heat of the battery, the battery compartment is made of metal aluminum alloy, however, the weight of the metal material is greater than that of the plastic or plastic material, which is not conducive to the lightweight design.

[0004] Therefore, it is urgent to provide a battery compartment structure that takes into account good heat dissipation and lightweight design to meet the long-time stable work of the handheld thermal imaging telescope. CONTENT OF THE INVENTION

[0005] Therefore, it is urgent to provide a battery compartment structure that takes into account good heat dissipation and lightweight design to meet the long-time stable work of the handheld thermal imaging telescope.

[0006] A battery compartment structure comprises a main compartment, a positive electrode assembly and a negative electrode assembly; the positive electrode assembly and the negative electrode assembly each comprise a switching enclosure part and a functional part provided on the switching enclosure part, two switching enclosure parts are connected to two ends of the main compartment along the axial direction of the main compartment, and the main compartment and the two switching enclosure parts jointly enclose a cavity for accommodating a battery, the two functional parts are located in the cavity and are respectively used for abutting against the positive electrode and the negative electrode of the battery; wherein the main compartment is made of magnesium alloy.

[0007] That is to say, the positive electrode assembly and the negative electrode assembly are connected with the main body bin through the respective corresponding adapter enclosures, and the respective corresponding functional parts are located on the side facing the cavity, so that when the battery is loaded into the cavity, the battery positive electrode and the battery negative electrode can respectively abut against the corresponding functional parts. Each adapter enclosure serves as a connection adapter of the positive electrode assembly and the negative electrode assembly relative to the main body bin, without the respective corresponding functional parts being directly welded to the main body bin, thereby improving the reliability and safety of the battery bin structure. In this process, it is the magnesium alloy that is used to make the main body bin that makes the main body bin have good lightness and strength, thereby reducing the weight of the entire battery bin structure and ensuring the stability and durability of the structure. At the same time, the magnesium alloy has good heat conduction performance and can quickly conduct heat, so that the heat of the battery can be quickly dispersed after being transferred to the main body bin, thereby improving the heat dissipation effect.

[0008] In some embodiments, the functional part includes a connecting sheet metal and a functional piece connected to the connecting sheet metal, and the connecting sheet metal is connected to one end of the adapter enclosure away from the main body bin.

[0009] In some embodiments, the functional piece of the negative electrode assembly is a spring having a plurality of spiral turns arranged in an axial stack along the main body bin; and the diameter of the spiral turns gradually decreases from the negative electrode assembly towards the positive electrode assembly.

[0010] In some embodiments, the functional piece of the positive electrode assembly is formed by protruding a middle part corresponding to the connecting sheet metal towards the cavity.

[0011] In some embodiments, the connecting sheet metal is provided with a first connecting part and a second connecting part, which are arranged at intervals along the circumference of the connecting sheet metal, and the first connecting part and the second connecting part are detachably connected with the adapter enclosure.

[0012] In some embodiments, one of the first connecting part and the second connecting part is snap-fitted with the adapter enclosure, and the other is threadedly connected with the adapter enclosure; or both the first connecting part and the second connecting part are snap-fitted with the adapter enclosure; or both the first connecting part and the second connecting part are threadedly connected with the adapter enclosure.

[0013] In some embodiments, the adapter enclosure is made of an insulating material.

[0014] In some embodiments, the adapter enclosure is detachably connected with the main body bin.

[0015] In some embodiments, one of the adapter fence and the main body compartment is provided with a first assembly column, and the other is provided with a first assembly platform; the battery compartment structure further comprises a first fastener, which is detachably connected to the first assembly platform and the first assembly column.

[0016] The application also provides a handheld thermal imaging device, which comprises a body and the above-mentioned battery compartment structure, and the battery compartment structure is arranged in the body. Due to the specific structure of the battery compartment structure, good heat dissipation and lightweight design are achieved, and long-time stable operation of the handheld thermal imaging device is met. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0018] Figure 1 A first partial schematic view of the battery compartment structure provided by an embodiment of the present application is shown in FIG. 1.

[0019] Figure 2 A partial enlarged view of A in FIG. 1 is shown in FIG. 2. Figure 1

[0020] Figure 3 A partial enlarged view of B in FIG. 1 is shown in FIG. 3. Figure 1

[0021] Figure 4 A partial enlarged view of C in FIG. 1 is shown in FIG. 4. Figure 1

[0022] Figure 5 A second partial schematic view of the battery compartment structure provided by an embodiment of the present application is shown in FIG. 5.

[0023] Figure 6 A partial schematic view of the battery compartment structure provided by an embodiment of the present application is shown in FIG. 6.

[0024] ​​​100, battery compartment structure; 101, adapter enclosure; 102, functional part; 110, main compartment; 111, connecting arm; 120, positive electrode assembly; 130, negative electrode assembly; 141, clamping arm; 142, second mounting column; 143, second fastener; 144, clamping hole; 151, first assembly platform; 152, first assembly column; 153, first fastener; 200, battery; 1001, cavity; 1021, connecting sheet metal; 1021a, positive electrode connecting sheet metal; 1021b, negative electrode connecting sheet metal; 1022, functional part; 1022a, positive electrode functional part; 1022b, negative electrode functional part; 1023, first connecting part; 1024, second connecting part; 1025, fixing arm; 1026, spiral. DETAILED DESCRIPTION

[0025] To make the above objectives, features and advantages of the present application more clear and easily understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, a lot of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many different ways other than those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0026] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there can be a middle component. The terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used in the description of the present application are for the purpose of illustration only and do not indicate the only implementation.

[0027] In addition, the terms "first", "second" are used only for the purpose of description and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0028] In the present application, unless otherwise explicitly specified and limited, the first feature is "on", "under" the second feature, which can be that the first feature is in direct contact with the second feature, or the first feature is indirectly in contact with the second feature through an intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature, which can be that the first feature is directly above or obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height. The first feature is "below", "under" and "under" the second feature, which can be that the first feature is directly below or obliquely below the second feature, or only means that the first feature is lower than the second feature in horizontal height.

[0029] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application.

[0030] Please refer to Figure 1 , Figure 5 and Figure 6 , an embodiment of the present application provides a battery compartment structure 100, comprising a main compartment 110, a positive electrode assembly 120 and a negative electrode assembly 130; the positive electrode assembly 120 and the negative electrode assembly 130 both comprise a switching enclosure part 101 and a functional part 102 arranged on the switching enclosure part 101, the two switching enclosure parts 101 are respectively connected to the two ends of the main compartment 110 along the axial direction of the main compartment 110, and the main compartment 110 and the two switching enclosure parts 101 together enclose a cavity 1001 for accommodating a battery 200, the two functional parts 102 are both located in the cavity 1001 and are respectively used for abutting against the positive electrode and the negative electrode of the battery; wherein the main compartment 110 is made of magnesium alloy.

[0031] That is, the positive electrode assembly 120 and the negative electrode assembly 130 are connected to the main body compartment 110 through the respective corresponding adapter enclosing parts 101, and the respective corresponding functional parts 102 are located on the side facing the cavity 1001, so that when the battery 200 is loaded into the cavity 1001, the battery positive electrode and the battery negative electrode can respectively abut against the corresponding functional parts 102. Each adapter enclosing part 101 serves as a connection adapter of the positive electrode assembly 120 and the negative electrode assembly 130 relative to the main body compartment 110, without the need to directly weld the respective corresponding functional parts 102 to the main body compartment 110, thereby improving the reliability and safety of the battery compartment structure 100. In actual use, the negative electrode assembly 130 is also provided with a conductive part for adapting to the power supply structure, thereby meeting the power supply. In this process, it is precisely because the main body compartment 110 is made of magnesium alloy that the main body compartment 110 has good lightness and strength, which not only reduces the weight of the entire battery compartment structure 100, but also ensures the stability and durability of the structure. At the same time, the magnesium alloy has good heat conduction performance and can quickly conduct heat, so that the heat of the battery 200 can be quickly dispersed after being transferred to the main body compartment 110, thereby improving the heat dissipation effect.

[0032] It can be understood that the density of magnesium alloy is only 1.74 g / cm 3 , which is about 2 / 3 of aluminum and 1 / 4 of steel, so it has a significant advantage in meeting the lightweight design; and the strength and stiffness of magnesium alloy are relatively high, so that the mechanical properties are maintained while the weight is significantly reduced. In addition, magnesium alloy has a higher damping coefficient and can absorb more energy, and the damping effect is better than aluminum alloy and cast iron, thereby improving the damping performance of the battery compartment structure 100 and improving the protection of the battery 200.

[0033] Among them, the main body compartment 110 can be made of magnesium alloy pressure casting.

[0034] Please continue to refer to Figure 1 , Figure 5 and Figure 6 In some embodiments, the functional part 102 includes a connection sheet metal 1021 and a functional piece 1022 connected to the connection sheet metal 1021, and the connection sheet metal 1021 is connected to one end of the adapter enclosing part 101 away from the main body compartment 110. That is, the connection sheet metal 1021 supports the functional piece 1022, and the connection sheet metal 1021 has good electrical conductivity and can replace the circuit board in the positive electrode assembly 120 and the negative electrode assembly 130, thereby saving the overall length by simplifying the structure, and further meeting the lightweight and miniaturization design.

[0035] Among them, the positive electrode assembly 120 corresponds to the positive electrode connection sheet metal 1021a and the positive electrode functional piece 1022a, and the negative electrode assembly 130 corresponds to the negative electrode connection sheet metal 1021b and the negative electrode functional piece 1022b.

[0036] Please refer to Figure 1 、 Figure 2 and Figure 5 Optionally, the negative functional part 1022b of the negative assembly 130 is a spring, and the spring has a plurality of spiral turns 1026 arranged in an axial stack along the main body compartment 110; from the negative assembly 130 towards the positive assembly 120, the diameter of the spiral turns 1026 gradually decreases. That is, the spring is made of metal to abut against the negative electrode of the battery, and the spring can gradually compress when subjected to pressure, thereby better adapting to batteries of different sizes and ensuring good contact between the battery and the negative assembly 130. At the same time, it is precisely because the diameter of the spiral turns 1026 of the spring gradually decreases that when the spring is compressed, the spiral turns 1026 with larger diameters provide sufficient deformation space for the spiral turns 1026 with smaller diameters, thereby reducing the size and space occupation of the spring in the axial direction of the main body compartment 110 when compressed, further reducing the length size to meet the miniaturization design. In addition, the design of the gradually decreasing diameter of the spiral turns 1026 can also increase the elastic potential energy of the spring and improve its buffering capacity when subjected to impact or vibration, further protecting the battery from damage; and using the spring as the negative functional part 1022b has a simple structure and low manufacturing cost, is easy to install and disassemble, and is convenient for subsequent maintenance and replacement.

[0037] As shown in Figure 1 and Figure 2 , wherein the negative connection sheet metal 1021b in the negative assembly 130 is provided with at least two fixing arms 1025 arranged in a circumferential interval on the side of the negative connection sheet metal 1021b facing the chamber 1001, and each fixing arm 1025 is fixed with one spiral turn 1026 on the side of the spring away from the battery. For example, the fixing arm 1025 can be bent to be clamped with the spiral turn 1026, or can be welded, or can be adhesively connected with a conductive adhesive. As long as it can meet the fixation of the negative connection sheet metal 1021b and the spring.

[0038] Please refer to Figure 1 and Figure 5 In some embodiments, the positive functional part 1022a of the positive assembly 120 is formed by protruding the middle part of the positive connection sheet metal 1021a towards the chamber 1001, which is equivalent to providing a protrusion on the side of the positive connection sheet metal 1021a facing the chamber 1001 to abut and cooperate with the positive electrode of the battery. Such a design, on the one hand, is equivalent to that the positive functional part 1022a of the positive assembly 120 is integrally formed with the positive connection sheet metal 1021a, further simplifying the structure and thereby reducing the overall length from the structure; on the other hand, it is precisely because there is no need to add other structures for current transfer, thereby optimizing the current flow path and reducing the resistance and energy loss. In addition, the positive connection sheet metal 1021a has good electrical conductivity and corrosion resistance, further ensuring the overall performance and reliability of the battery compartment structure 100.

[0039] Please refer to Figure 1 、 Figure 3 、 Figure 4 and Figure 5 In optional embodiments, the connecting sheet metal 1021 is provided with a first connecting portion 1023 and a second connecting portion 1024, which are arranged along the circumference of the connecting sheet metal 1021 and are both detachably connected with the adapter surrounding barrier portion 101. Such an arrangement facilitates the disassembly and assembly of the connecting sheet metal 1021 and the adapter surrounding barrier portion 101, and thus facilitates the disassembly and assembly of the battery 200. The first connecting portion 1023 and the second connecting portion 1024 both protrude radially outward from the main body compartment 110, without occupying the space of the cavity 1001, and thus ensure that the battery compartment structure 100 has a large volume to accommodate a large-capacity battery 200.

[0040] Please refer to Figures 3 to 5 In some embodiments, the first connecting portion 1023 is in clamping connection with the adapter surrounding barrier portion 101, and the second connecting portion 1024 is in threaded connection with the adapter surrounding barrier portion 101. Specifically, the adapter surrounding barrier portion 101 is provided with a clamping arm 141 and a second mounting column 142, and the first connecting portion 1023 is provided with a clamping hole 144, the clamping arm 141 passes through the clamping hole 144 to be in clamping connection with the first connecting portion 1023; and the battery compartment structure further comprises a second fastener 143, the second fastener 143 passes through the second connecting portion 1024 and is in threaded connection with the second mounting column 142. The second fastener 143 is a screw, and the second mounting column 142 is provided with a threaded hole. In this way, detachable connection of the connecting sheet metal 1021 and the adapter surrounding barrier portion 101 can be achieved. Moreover, due to such an arrangement, clamping connection of the first connecting portion 1023 and the adapter surrounding barrier portion 101 can be used as a connection positioning, improving assembly efficiency and connection reliability.

[0041] Alternatively, the clamping arm 141 on the adapter surrounding barrier portion 101 can be provided with the clamping hole 144, and the first connecting portion 1023 passes through the clamping hole 144 and is in clamping connection with the clamping arm 141. As long as it can meet the clamping connection, it is acceptable.

[0042] In other embodiments, the first connecting portion 1023 can be in threaded connection with the adapter surrounding barrier portion 101, and the second connecting portion 1024 can be in clamping connection with the adapter surrounding barrier portion 101. This is only an example.

[0043] In still other embodiments, the first connecting portion 1023 and the second connecting portion 1024 are both in clamping connection with the adapter surrounding barrier portion 101. Alternatively, the first connecting portion 1023 and the second connecting portion 1024 are both in threaded connection with the adapter surrounding barrier portion 101. The specific clamping connection and threaded connection structures are basically similar to the foregoing, and thus will not be described herein again.

[0044] It should be noted that the threaded connection between the second connecting part 1024 and the adapter fence 101, or the threaded connection between the first connecting part 1023 and the adapter fence 101, is fixed by a screw.

[0045] Referring to Figure 1 and Figure 5 In some specific embodiments, the first connecting part 1023 and the second connecting part 1024 are arranged opposite to each other along the radial direction of the adapter fence 101, so as to ensure uniform stress and improve the connection reliability.

[0046] Referring to Figure 1 and Figure 5 For example, the adapter fence 101 is made of an insulating material. Such a design improves the safety in use and effectively avoids short circuit or other safety hazards caused by current passing through the adapter fence 101. In addition, such a design is equivalent to that the adapter fence 101 is made of a non-metal material, which further reduces the overall weight and meets the lightweight design. In addition, such a design can also promote the heat generated by the battery 200 to be fully conducted to the main body compartment 110, and then dissipated through the main body compartment 110, thereby improving the heat dissipation effect.

[0047] The adapter fence 101 is made of one or more materials such as plastic, rubber, and resin.

[0048] Referring to Figure 1 and Figure 3 In some embodiments, the adapter fence 101 is detachably connected to the main body compartment 110. Such a design facilitates the loading or unloading of the battery 200 and facilitates the replacement of the battery 200. The outer side wall of the adapter fence 101 is provided with a first assembly platform 151, and the outer side wall of the main body compartment 110 is provided with a first assembly column 152. The battery compartment structure 100 further comprises a first fastener 153, which is detachably connected to the first assembly platform 151 and the first assembly column 152. The first assembly platform 151 and the first assembly column 152 provide an accurate assembly position for the first fastener 153, ensuring the assembly accuracy. Moreover, such a design does not occupy the space of the cavity 1001, further ensuring that the battery compartment structure 100 has a larger volume to accommodate a large-capacity battery 200. The first fastener 153 can be a screw or a bolt, which has a lower cost and higher connection reliability. The first assembly column 152 is provided with a threaded hole, which is convenient for threaded connection with the first fastener 153.

[0049] The first assembly platform 151 is provided with a plurality of first assembly platforms 151 arranged along the circumferential direction of the adapter fence 101, each first assembly platform 151 corresponding to a first assembly column 152 and a first fastener 153 to improve the connection reliability. Of course, the number of first assembly platforms 151 should not be too large, otherwise the assembly difficulty and structural interference problem will be increased. In some specific embodiments, the first assembly platform 151 is provided with two first assembly platforms 151 arranged in the radial direction of the adapter fence 101 to ensure uniform stress.

[0050] Alternatively, the outer side wall of the adapter fence 101 can be provided with a first assembly column 152, and the outer side wall of the main body bin 110 can be provided with a first assembly platform 151. This is only an example.

[0051] As shown in Figure 1 and Figure 5 In actual use, the end of the main body bin 110 facing the positive electrode assembly 120 is provided with a connecting arm 111, which can be connected to the target position. Of course, the connecting arm 111 can be one or at least two. When the main body bin 110 is provided with at least two connecting arms 111, the at least two connecting arms 111 are arranged along the circumferential direction of the main body bin 110 to improve the connection reliability. The connecting arm 111 can be made of sheet metal.

[0052] Please refer to Figure 6 The application also provides a handheld thermal imaging device, which comprises a body and the battery bin structure 100 described above, and the battery bin structure 100 is arranged in the body. Specifically, the main body bin 110 in the battery bin structure 100 is connected to the body through the connecting arm 111 to meet the integration of the battery bin structure 100, thereby meeting the power supply demand of the body. Due to the specific structure of the battery bin structure 100, good heat dissipation and lightweight design are considered, which meets the long-time stable work of the handheld thermal imaging device.

[0053] The technical features of the above-described embodiments can be combined in any way. In order to make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the description.

[0054] The above-described embodiments only express several implementation manners of the application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the application, and these all belong to the protection scope of the application. Therefore, the patent protection scope of the application should be subject to the appended claims.

Claims

1. A battery compartment structure, characterized by, The battery compartment structure (100) comprises a main compartment (110), a positive electrode assembly (120) and a negative electrode assembly (130); The positive electrode assembly (120) and the negative electrode assembly (130) each comprise a transition enclosure (101) and a functional part (102) arranged on the transition enclosure (101), and the two transition enclosures (101) are respectively connected to the two ends of the main compartment (110) along the axial direction of the main compartment (110) and are jointly arranged with the main compartment (110) to form a cavity (1001) for accommodating a battery (200), and the two functional parts (102) are located in the cavity (1001) and are respectively used for abutting against the positive electrode and the negative electrode of the battery. The main compartment (110) is made of a magnesium alloy.

2. The battery compartment structure of claim 1, wherein, The functional part (102) comprises a connecting sheet metal (1021) and a functional piece (1022) connected to the connecting sheet metal (1021), and the connecting sheet metal (1021) is connected to one end of the transition enclosure (101) away from the main compartment (110).

3. The battery compartment structure of claim 2, wherein, The functional piece (1022) of the negative electrode assembly (130) is a spring, and the spring has a plurality of spiral turns (1026) arranged in a stacked manner along the axial direction of the main compartment (110). From the negative electrode assembly (130) to the positive electrode assembly (120), the diameter of the spiral turns (1026) gradually decreases.

4. The battery compartment structure according to claim 2 or 3, characterized by, The functional piece (1022) of the positive electrode assembly (120) is formed by protruding the middle part corresponding to the connecting sheet metal (1021) towards the cavity (1001).

5. The battery compartment structure of claim 2, wherein, The connecting sheet metal (1021) is provided with a first connecting part (1023) and a second connecting part (1024), which are arranged in a spaced manner along the circumferential direction of the connecting sheet metal (1021), and the first connecting part (1023) and the second connecting part (1024) are each detachably connected with the transition enclosure (101).

6. The battery compartment structure of claim 5, wherein, One of the first connecting part (1023) and the second connecting part (1024) is in clamping fit with the transition enclosure (101), and the other is in threaded connection with the transition enclosure (101); or the first connecting part (1023) and the second connecting part (1024) are each in clamping fit with the transition enclosure (101); or the first connecting part (1023) and the second connecting part (1024) are each in threaded connection with the transition enclosure (101).

7. The battery compartment structure of claim 1, wherein, The transition enclosure (101) is made of an insulating material.

8. The battery compartment structure of claim 1 or 5, wherein, The transition enclosure (101) is detachably connected with the main compartment (110).

9. The battery compartment structure of claim 8, wherein, One of the transition enclosure (101) and the main compartment (110) is provided with a first assembly column (152), and the other is provided with a first assembly table (151). The battery compartment structure (100) further comprises a first fastener (153), and the first fastener (153) is detachably connected with the first assembly column (152) through the first assembly table (151).

10. A hand-held thermal imaging device, characterized by The handheld thermal imaging device comprises a body and the battery compartment structure according to any one of claims 1 to 9, wherein the battery compartment structure (100) is arranged in the body.

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