Fan cover system side panel fixing structure and electronic balance

Abstract

According to the side panel fixing structure of the fan housing system, the fan housing system comprises an upper cover, the fixing structure comprises a positioning assembly, a rotary lock catch and a clamping piece, the clamping piece and the upper cover are integrally formed, the positioning assembly is used for positioning a side panel to the upper cover, the rotary lock catch comprises a column body and an installation panel, the column body is provided with a positioning groove, and the clamping piece is used for clamping the positioning groove. And the rotary lock catch is limited axially and allowed to rotate, so that the mounting panel adjusts the fixing state of the positioning component on the side panel by virtue of the self rotating position. According to the fan cover side panel fixing structure, the side panel can be conveniently and rapidly assembled and disassembled. The invention also provides an electronic balance.

Description

Technical Field

[0001] The invention relates to the field of electronic balances, in particular to the field of fixing wind shield side panels of electronic balances. Background Art

[0002] The electronic balance includes a wind shield system, a balance body, and a weighing assembly. The wind shield system is used to protect the electronic balance from external interference, such as preventing air flow or temperature changes from affecting the balance reading. The panels of the wind shield system include front and rear panels, left and right side panels, and a top panel, and the panels are generally made of glass.

[0003] Typically, the installation and removal mechanism of the side panel uses latches, screws and other auxiliary parts to complete the function, but this method involves many parts, resulting in a complex assembly process, a long assembly time on the production line, and a high time and economic cost. Summary of the invention

[0004] An object of the present invention is to provide a side panel fixing structure for a fan hood system, which can realize the installation and removal of the side panel simply and quickly.

[0005] To achieve the above-mentioned purpose, the side panel fixing structure of the wind hood system is used to detachably fix the side panel of the wind hood system, and the wind hood system also includes an upper cover, and the fixing structure includes a positioning assembly, a rotating lock, a lock cavity and a snap-fit ​​piece, and the positioning assembly is used to position the side panel on the upper cover; the lock cavity is arranged in the upper cover; the rotating lock includes a column and an installation panel, and the column is provided with a positioning groove; the snap-fit ​​piece is integrally formed with the upper cover, and is used to snap into the positioning groove to axially limit the rotating lock and allow the rotating lock to rotate, so that the installation panel can adjust the positioning state of the positioning assembly to the side panel by its own rotational position.

[0006] In one or more embodiments, the engaging member includes an elastic body and a hook, the hook is used to engage with the positioning groove, and the elastic body is configured to be squeezed and deflected by the column when in contact with the column.

[0007] In one or more embodiments, the hook is interference fit with the groove surface of the positioning groove.

[0008] In one or more embodiments, the elastic body is a cantilever beam, and the upper cover further includes a cantilever beam offset space located on one side of the cantilever beam.

[0009] In one or more embodiments, the engaging member is an elastic protrusion, which is arranged on the inner periphery of the locking cavity and located on the axial movement path of the column, and is used to engage the positioning groove. The elastic protrusion is configured to be squeezed and deformed when in contact with the column.

[0010] In one or more embodiments, the positioning groove is a circumferential ring groove arranged on the cylindrical surface of the cylinder.

[0011] In one or more embodiments, the circumferential ring groove includes a terminal end, and the cylinder includes an axial groove communicating with the terminal end.

[0012] In one or more embodiments, the positioning groove is a T-shaped groove arranged on the axial end surface of the column, and the hook includes a radial limiting protrusion for locking into the T-shaped groove.

[0013] In one or more embodiments, the positioning assembly includes a receiving portion, the receiving portion includes a recessed area for receiving the side panel and a limiting oblique guide surface, and the side panel also includes a chamfered surface cooperating with the limiting oblique guide surface.

[0014] In one or more embodiments, the upper cover includes a locking cavity for the column to extend into, and the locking member is disposed in the locking cavity.

[0015] In one or more embodiments, the positioning assembly includes a raised positioning column and a positioning hole, wherein the raised positioning column is arranged on the upper cover; the positioning hole is arranged on the side panel for allowing the raised positioning column to pass through; and the positioning groove is arranged on the mounting panel for cooperating with the raised positioning column.

[0016] In one or more embodiments, the column includes a rotation limiting protrusion, and the locking cavity includes a rotation limiting boss, and the rotation limiting boss is used to block the rotation limiting protrusion to limit the rotation of the column.

[0017] Another object of the present invention is to provide an electronic balance, which includes a wind shield system and a balance body. The wind shield system includes an upper cover, a bottom shell and a side panel, and the side panel is fixed by one or more of the above-mentioned wind shield system side panel fixing structures.

[0018] The side panel fixing structure of the above-mentioned air hood system can control the relative position of the positioning component through the rotatable rotary lock, thereby controlling the clamping and fixing relationship between the installation panel of the rotary lock and the side panel of the upper cover, thereby controlling the fixing or disassembly state of the side panel; the locking part is arranged to be integrally formed with the upper cover, which can simplify the number of parts and the fixing structure. The above-mentioned rotary locking method simplifies the original thread and pin assembly process, facilitates replacement, simplifies the operating procedures for assembly and disassembly of the side panel, and effectively saves assembly time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which:

[0020] Figure 1 is a schematic diagram of an embodiment of an electronic balance;

[0021] Figure 2is a schematic diagram of an embodiment of a wind shield system;

[0022] Figure 3 is a schematic diagram of the rotary lock in the "open" position;

[0023] Figure 4 This is an exploded view of the parts of the fan hood side panel fixing structure;

[0024] Figure 5 It is a schematic diagram of the end face of the upper cover;

[0025] Figure 6 is a schematic diagram of an embodiment of a rotary lock;

[0026] Fig. 7A is a schematic diagram of the rotating lock at one viewing angle;

[0027] Figure 7B is a schematic diagram of the rotating lock from another perspective;

[0028] Figure 8 It is a schematic diagram of the cantilever beam and the hook at one viewing angle;

[0029] Fig. 9 is a schematic diagram of the cantilever beam and the hook from another perspective;

[0030] Fig.10 It is a schematic diagram of the structure of the side panel;

[0031] Fig.11 is a schematic diagram of the rotary lock and the lock cavity in an initial assembly state;

[0032] Fig.12 is a schematic diagram of the side panel in a fixed state;

[0033] Fig.13 is a schematic diagram of the side panel being in a detachable state;

[0034] Fig.14 This is a rear view of the rotating lock when it is engaged with the upper cover;

[0035] Fig.15 It is a schematic diagram when the column is in contact with the buckle;

[0036] Fig.16 This is a schematic diagram of the buckle being inserted into the limit slot;

[0037] Fig.17 It is a schematic diagram of the rotation limiting protrusion and the rotation limiting boss on one side being matched;

[0038] Fig.18 is a schematic diagram of the rotation limiting protrusion cooperating with the rotation limiting boss on the other side;

[0039] Fig.19 is a schematic diagram of an embodiment of a positioning groove;

[0040] Fig. 20 Schematic diagram of an embodiment of a T-groove.

[0041] Symbols and Markings

[0042] 10. Fan hood system

[0043] 20 balance body

[0044] 101 Top Panel

[0045] 102 Wind shield column

[0046] 103 bottom shell

[0047] 104 Side Panel

[0048] 1041 Front Panel

[0049] 1042 Rear Panel

[0050] 1043 Left Panel

[0051] 1044 Right Panel

[0052] 105 Accommodation

[0053] 106 Rotating lock

[0054] 107 Upper cover

[0055] 108 Raised positioning column

[0056] 109 Limiting inclined guide surface

[0057] 110 Depression

[0058] 111 Rotation limit boss

[0059] 112 Lock cavity

[0060] 113 Cantilever beam

[0061] 114 Cantilever beam offset space

[0062] 115 Install the inclined guide surface

[0063] 116 Hook

[0064] 117 End fixing surface

[0065] 118 inclined guide surface

[0066] 119 Radial limit protrusion

[0067] 120 Positioning slot

[0068] 121 Column

[0069] 122 Rotation limit protrusion

[0070] 123 Installation Panel

[0071] 124 Positioning groove

[0072] 125 Axial limit surface

[0073] 126 Indicator protrusion

[0074] 128 Lock side

[0075] 129 Positioning hole

[0076] 130 Bevel

[0077] 131 Positioning slot

[0078] 151 Axial groove

[0079] 152 Termination

[0080] 153 Rotating Space

[0081] 155 outer side

[0082] 1234 inner side

[0083] 1071 End face DETAILED DESCRIPTION

[0084] The present invention is further described below in conjunction with specific embodiments and drawings. More details are elaborated in the following description to facilitate a full understanding of the present invention. However, the present invention can obviously be implemented in a variety of other ways different from the description herein. Those skilled in the art can make similar generalizations and deductions based on actual application situations without violating the connotation of the present invention. Therefore, the protection scope of the present invention should not be limited by the content of this specific embodiment.

[0085] It should be noted that these and other subsequent drawings are only examples and are not drawn to scale, and should not be used to limit the actual scope of protection required by the present invention.

[0086] like Figures 1 to 3As shown, the electronic balance includes a hood system 10 and a balance body 20, and the hood system 10 includes an upper cover 107, a hood column 102, side panels 104 located in four directions of front, back, left and right, a top panel 101, and a hood bottom shell 103. Further, the side panels 104 include a front panel 1041, a rear panel 1042, a left panel 1043, and a right panel 1044. The hood system side panel fixing structure disclosed in the present invention can detachably fix the side panels on the hood system. The following figures and embodiments are all taken as examples of the front panel 1041. It can be understood that for other electronic balances of different specifications and designs, the side panels 104 in other directions can be fixed using this structure.

[0087] Reference Figures 3 to 6 As shown, the side panel fixing structure of the wind shield system includes a positioning component, a snap-fitting part and a rotating lock 106, wherein the snap-fitting part and the upper cover 107 are integrally formed. The integrally formed arrangement of the snap-fitting part and the upper cover 107 can simplify the fixing structure, simplify the number of parts, and further simplify the assembly and disassembly steps.

[0088] Rotating lock 106 reference Figures 6 to 7B It is understood that it includes a column 121 and a mounting panel 123, and the column 121 is axially limited but rotatably accommodated in the lock cavity 112, so that the rotating lock 106 can adjust the relative position with the positioning component by its own rotation position, and then adjust the fixed state of the side panel. For example, in some embodiments, a lock cavity 112 for the column 121 to extend into is set in the upper cover 107, and a clamping member is set in the lock cavity 112 to axially limit the column 121 and allow the column 121 to rotate. The fixed state of the side panel includes two situations: the side panel has been positioned to the upper cover and cannot be detached, and the side panel can be detached from the upper cover.

[0089] The positioning assembly is used to position the side panel 104 on the upper cover 104. In some embodiments, the positioning assembly includes a receiving portion 105 that fits with the end of the side panel 104. Further, the receiving portion 105 includes a recessed area 110 for accommodating the side panel and a limiting oblique guide surface 109. The side panel 104 includes a chamfered surface 130 that fits with the limiting oblique guide surface 109. Fig.10 As shown, the side panel is thus inserted into the recessed area 110 of the upper cover 107. When the mounting panel 123 overlaps with the receiving portion 105, the mounting panel 123 and the receiving portion 105 jointly clamp the side panel. The rotating lock 106 can change the overlapping state of the mounting panel 123 and the receiving portion 105 by rotating the column 121, thereby controlling the fixing state of the side panel.

[0090] The end of the side panel is set as a chamfered surface 130, and a corresponding limiting inclined guide surface 109 is set on the upper cover 107, which can reduce the area of ​​the front panel 1041 clamped between the installation panel 123 and the upper cover 107. When the rotating lock 106 is rotated, the installation panel 123 is more likely to be in a position that does not block the side panel 104. Fig.13 shown.

[0091] Specifically, when the rotating lock 106 is rotated to Fig.13 In the first position shown, when the mounting panel 123 is rotated to a position where it does not overlap with the upper cover 107 to clamp the side panel, the chamfered surface 130 of the front panel 1041 and the locking slanted side surface 128 of the mounting panel 123 are in a parallel state, the front panel 1041 and the mounting panel 123 do not interfere with each other, and the front panel 1041 has space to move forward, so that the front panel 1041 is in a state where it can be removed forward.

[0092] When the rotating lock 106 rotates to the second position, Fig.12 and Fig.14 As shown, if the fixing structure does not include a positioning component, then the mounting panel 123 and the end surface 1071 jointly clamp the front panel 1041 to complete the clamping and fixing of the front panel 1041.

[0093] To achieve further positioning and fixing of the side panels, Figure 4 , Figure 5 and Fig.11 As shown, the positioning assembly also includes a protruding positioning column 108 disposed in the recessed area 110 of the upper cover 107 and a positioning hole 129 disposed on the side panel 104. The positioning hole 129 allows the protruding positioning column 108 to pass through, thereby positioning the side panel 104 on the upper cover 107. The positioning groove 124 on the mounting panel 123 cooperates with the protruding positioning column 108 to further fix the side panel. Fig.13 When in the first position shown, to remove the front panel 1041, it is also necessary to first disengage the positioning hole 129 on the front panel 1041 from the raised positioning column 108; when the rotating lock 106 is rotated to the second position, the raised positioning column 108 in the recessed area 110 passes through the positioning hole 129 on the front panel 1041 and cooperates with the positioning groove 124 on the mounting panel 123, so that the front panel 1041 cannot move too much between the mounting panel 123 and the upper cover 107.

[0094] One implementation method of separating the protruding positioning column 108 from the positioning groove 124 is to apply a strong force to the mounting panel 123 to force the positioning groove 124 to overcome the obstruction of the protruding positioning column 108 and achieve separation. For example, an outward pulling force or a large torque is applied to the mounting panel 123 to force the positioning groove 124 to separate from the protruding positioning column 108.

[0095] Further, in order to facilitate the separation of the positioning groove 124 and the raised positioning column 108, one embodiment is to set the end of the raised positioning column 108 as an arc surface B, and the positioning groove 124 includes an arc concave surface C that cooperates with the arc surface. Figure 6 As shown, the arc surface B of the raised positioning column 108 is as shown in FIG. Figure 8 As shown, the arc surface matching method can reduce the resistance when the positioning groove 124 and the protruding positioning column 108 are separated.

[0096] More preferably, the positioning groove 124 is arranged at a position close to the end of the mounting panel 123, such as Figure 6 and Fig.14 As shown, the positioning groove 124 is easily disengaged from the protruding positioning column 108 .

[0097] Another embodiment that facilitates the protruding positioning column 108 to be separated from the positioning groove 124 is to set a connecting groove (not shown in the figure) connected to the installation panel 123. The shape of the connecting groove is consistent with the trajectory of the protruding positioning column 108 during the rotation of the installation panel 123, and the groove depth of the connecting groove is slightly smaller than the groove depth of the positioning groove 124. Then, by applying a strong force to the installation panel 123 or by rotating, the protruding positioning column 108 can quickly and smoothly slide from the positioning groove 124 to the connecting groove, and move in the connecting groove following the rotation of the installation panel 123 until it slides out of the installation panel 123 and is separated from the installation panel 123. After the protruding positioning column 108 is separated from the installation panel 123, the rotating lock buckle 106 is continued to be rotated until the installation panel 123 and the side panel 104 are in a state of non-interference with each other, and then the side panel 104 is removed.

[0098] The locking cavity 112 and the engaging member of the side panel fixing structure of the hood system refer to Figure 8 , Fig. 9 , Fig.11 as well as Fig.15 and Fig.16 It is understood that a positioning groove 120 is provided on the column 121 , and a clamping piece is provided on the upper cover 107 . The clamping piece realizes axial limitation of the column 121 in the locking cavity 112 by engaging with the positioning groove 120 , but allows rotation of the column 121 .

[0099] As an implementation of the engaging member, the engaging member is an elastic body and a hook 116 facing the lock cavity 112, such as Figure 8 and Fig. 9 As shown, the elastic body and the hook 116 are arranged on the axial side of the lock cavity 121. The elastic body can be arranged as follows Figure 8The cantilever beam 113 integrally provided with the upper cover 107 shown in the figure can be squeezed by the rotating column 121 and its position can be offset when the cantilever beam 113 contacts the column 121. The upper cover 107 is also provided with a cantilever beam offset space 114 located on one side of the cantilever beam 113 to accommodate the cantilever beam 113 that is squeezed and offset. The hook 116 engages with the positioning groove 120 to axially limit the rotation of the lock buckle 106, as shown in FIG. Fig.16 shown.

[0100] Preferably, when the hook 116 is inserted into the positioning groove 120, it has an interference fit with the groove surface. Fig.16 As shown, a pre-tightening force is applied to the column 121 to enhance the axial limiting and fixing effect, thereby preventing the hook 116 from easily escaping from the positioning groove 120 .

[0101] In some embodiments, the axial end surface of the column 121 may also be set as Figure 6 The oblique guide surface 118 shown in the figure is provided on the hook 116 with an installation oblique guide surface 115 that matches the oblique guide surface 118. Figure 8 When the column 121 extends into the lock cavity 112, the inclined guide surface 118 will fit with the installation inclined guide surface 115 on the hook 116, as shown in FIG. Fig.15 As the rotating column body 121 continues to move axially inward, the inclined guide surface 118 will slide on the installation inclined guide surface 115. At this time, the installation inclined guide surface 115 is subjected to a force component along the radial direction of the column body 121, forcing the cantilever beam 113 to deflect along the radial direction D and enter the cantilever beam deflection space 114, thereby allowing the column body 121 to continue to move axially until the cantilever beam 113 is reset by elasticity and the hook 116 is locked in the positioning groove 120. Fig.16 At this time, the axial limiting surface 125 in the positioning groove 120 abuts against the end fixing surface 117 of the hook 116 to complete the axial limiting of the column 121 .

[0102] The positioning groove 120 may be Figure 6 and Fig.16 The circumferential annular groove shown in the figure is arranged on the cylindrical surface of the cylinder 121, for example, 360°. With the feature of the circumferential annular groove, the cylinder 121 can realize rotation at the axial position.

[0103] To achieve the separation of the rotating lock 106 from the lock cavity 112, in one embodiment, as Fig. 7A and 7BAs shown, the circumferential annular groove as the positioning groove 120 is set to be less than 360°, but includes a terminal end 152, and the column 121 includes an axial groove 151 connected to the terminal end 152. When the rotating column body 121 rotates to the position where the terminal end 152 is located, the hook 116 disengages from the positioning groove 120 and enters the axial groove 151, and the axial limiting surface 125 is separated from the end fixing surface 117 of the hook 116. At this time, the column 121 is allowed to move axially until it is separated from the hook 116. In another embodiment, the operator can reverse the wind shield system 10 after removing the side panel 104 to expose the cantilever beam 113. The operator applies external force through an external component to force the cantilever beam 113 to deviate, and then remove the rotating lock buckle 106.

[0104] In addition, the positioning groove 120' can also be configured as follows Fig. 20 The T-shaped groove is located on the axial end surface of the column 121. At this time, the cantilever beam 113 and the hook 116' are arranged at the axial end of the column 121. The cantilever beam 113' is squeezed by the column 121 in the axial direction ( Fig. 20 When the hook 116' falls into the T-shaped groove on the axial end face, the radial limiting protrusion 119 on the hook 116' is engaged with the T-shaped groove, plays an axial limiting role, and allows the hook 116' to continue to rotate in the T-shaped groove.

[0105] As another embodiment of the engaging member, the engaging member is an elastic protrusion (not shown in the figure) provided on the inner circumferential surface of the lock cavity 112, and is located on the axial movement path of the column 121, and the circumferential annular groove is set at 360°. A positioning groove 120 is provided on the cylindrical surface of the column 121, and the elastic protrusion is configured to be deformed by axial compression when in contact with the column 121. If the elastic protrusion is an elastic convex ring or a plurality of circumferentially distributed bosses, it is axially deformed by the axial push of the column 121, thereby allowing the column 121 to continue to move axially. When the positioning groove 120 passes through the elastic protrusion, the elastic protrusion is reset by the rebound force to engage the positioning groove 120. When removing the rotary lock 106, if the elastic protrusion is a boss, the above-mentioned axial groove 151 can be set on the column. When the axial groove is rotated to the position of the boss, the rotary lock 106 is moved axially out; if the elastic protrusion is a convex ring, a large axial pulling force can be applied to the column 121 to squeeze the elastic convex ring to force it to deform axially outward, thereby allowing the end of the column 121 to pass through.

[0106] In some embodiments, the outer side of the mounting panel 123 is provided with Fig. 7A The indicator protrusion 126 shown is intended to enhance the touch feeling, remind the operator of the touch position, and facilitate the operator to rotate the rotary lock buckle 106 or apply force to the rotary lock buckle 106 .

[0107] Continue to refer to Fig.17 and Fig.18 As shown, in some embodiments, the column 121 includes Figure 6 The rotation limiting protrusion 122 shown in the figure, the locking cavity 112 includes Figure 5 The rotation limiting boss 111 shown is used to block the rotation limiting protrusion 122 to limit the rotation of the column 121. A pair of rotation limiting bosses 111 define a rotation space 153 for the column 121 to rotate. Fig.17 By controlling the relative positions of a pair of rotation limiting bosses 111, the arc of the rotation space 153 can be controlled, thereby controlling the rotation range of the rotation lock 106. It is understandable that the rotation range of the rotation lock 106 can also be regulated by limiting the positions of the two assembly surfaces on the rotation limiting boss 122 that contact the rotation limiting boss 111, thereby controlling the rotation range of the rotation lock 106 in the lock cavity 112.

[0108] Continuing to refer to FIG. 19 , in some embodiments, the hood bottom shell 103 is provided with a positioning groove 131 that matches the bottom end of the side panel. The positioning groove 131 is preferably an oblique groove, and the outer side surface 155 is an inclined surface, so as to allow the side panel 104 to rotate in the groove and facilitate the installation and removal of the side panel. When installing or removing, the bottom end of the side panel located in the groove can be used as a support point to facilitate the rotation operation of the side panel.

[0109] In combination with the above introduction to the fan hood side panel fixing structure, a fan hood side panel fixing method can also be understood. The following takes the front panel 1041 and the embodiment shown in the accompanying drawings as an example to introduce the installation and fixing process of the fan hood side panel.

[0110] like Fig.19 As shown, the bottom of the front panel 1041 is pre-installed into the positioning groove 131.

[0111] Then, if Fig.11 As shown, align the mounting holes 129 on the front panel 1041 with the positioning posts 108 of the upper cover 107, push the front panel 1041 inward, so that the positioning posts 108 are inserted into the mounting holes 129, and the front panel 1041 is fixed to the upper cover 107 of the wind shield.

[0112] Then, if Fig.11 As shown, the rotating lock 106 is held by hand, so that the column 121 and the lock cavity 112 on the upper cover 107 are concentric, and the column 121 is inserted into the lock cavity 11. At this time, the rotation limiting protrusion 122 is located at a certain position of the rotation space 153.

[0113] like Fig.15 As shown, the column 121 is moved inwardly along the axial direction of the lock cavity 112, and the inclined guide surface 118 at the end of the column 121 first contacts the hook 116 of the cantilever beam 113. Figure 8 , Fig.15 It is understood that the inclined guide surface 118 gradually fits with the installation inclined guide surface 115 of the hook 116. Continue to move the column 121 axially inward, and the inclined guide surface 118 slides out from the installation inclined guide surface 115 and exerts pressure on the installation inclined guide surface 115. Fig.15 The force in the upper right oblique direction has a component force in the radial direction of the column 121, and the component force in the radial direction presses the cantilever beam 113 toward Fig.15 The cantilever beam deviates in the middle D direction and enters the cantilever beam deviating space 114 .

[0114] With the help of the deflection of the cantilever beam 113, the column 121 is allowed to continue to extend inward along the axial direction until the limiting groove 120 moves to the position where the hook 116 is located. Fig.16 As shown, at this time, the cantilever beam 113 is reset by its own elasticity, and the hook 116 is immediately inserted into the limiting groove 120, and the axial limiting surface 125 is abutted against the end fixing surface 117 of the end of the hook 116, thereby realizing the axial limitation of the rotary lock buckle 106.

[0115] At this time, the inner side surface 1234 of the installation panel 123 on the rotating lock buckle 106 contacts the end surface 1071 on the upper cover 107, and the installation panel 123 is further rotated to make the positioning groove 124 on the installation panel 123 engage with the protruding positioning column 108 passing through the positioning hole 129 on the side panel. Fig.14 At this time, the front panel 1041 is clamped by the mounting panel 123 of the rotating lock 106 and the end surface 1071 of the upper cover, so that the front panel 1041 is in a "fixed" state, as shown in FIG. Figure 2 and Fig.12 shown.

[0116] The disassembly process of the front panel 1041 is as follows.

[0117] On the front panel 1041 is Fig.12 In the fixed state shown, a certain strength of pulling force or torque is applied to the mounting panel 123 of the rotating lock 106 to force the protruding positioning column 108 to disengage from the positioning groove 124. After the protruding positioning column 108 disengages from the positioning groove 124, the mounting panel 123 can be rotated counterclockwise in the direction A until it is finally in the position of Fig.13 When the lower rotary lock 106 is in the "open" state, Figure 3 and Fig.13 shown.

[0118] When the rotary lock 106 is in the "open" state, the lock side 128 of the mounting panel 123 is parallel to the chamfered surface 130 of the front panel 1041, and the mounting panel 123 does not overlap with the front panel 1041. Figure 3 and Fig.13At this time, there is no obstruction in front of the front panel 1041, and the operator can directly apply a forward force to the front panel 1041, such as pushing the top of the front panel 1041 outward to disengage the positioning hole 129 on the front panel 1041 from the raised positioning column 108, so that the front panel 1041 can be flipped forward, and then the front panel 1041 can be lifted up to be taken out, and the bottom of the front panel 1041 can be disengaged from the positioning groove 131, thereby completing the quick disassembly of the front panel 1041.

[0119] When the front panel 1041 is re-secured, the rotating lock 106 is Fig.13 The position shown is rotated clockwise in the direction A' until the protruding positioning column 108 passing through the positioning hole 129 of the front panel 1041 is re-engaged in the positioning groove 124, and the rotating lock 106 is in the Fig.12 When the front panel 1041 is in the position shown, the front panel 1041 is fixed again.

[0120] The above-mentioned hood side panel fixing structure simplifies the traditional method of locking and loosening the hood side panel by complex pins, screws and other auxiliary parts, into a method of cooperation between the lock buckle and the hood upper cover. By rotating the lock buckle, with the help of the engagement state of the raised positioning column and the positioning groove, the side panel can be fixed or separated, and the side panel can be quickly installed and disassembled, which simplifies the assembly process and effectively shortens the assembly time.

[0121] Combined with the above introduction to the wind shield side panel fixing structure, it can also be understood that an electronic balance using the wind shield system side panel fixing structure to fix the side panel, the electronic balance includes Figure 1 The wind shield system 10 and the balance body 20 shown in the figure, the wind shield system 10 comprises an upper cover 107, a bottom shell 103 and four side panels located in the front, back, left and right directions. When the fixing structure is used for any side panel, a lock cavity 112 perpendicular to the plane direction of the side panel is set on the upper cover 107, and a column 121 extending in the same direction as the lock cavity 112 is inserted into the lock cavity 112, and the side panel can be quickly assembled and disassembled by means of the cooperation of the hook 116 and the limiting groove 120 and the cooperation of the protruding positioning column 108 and the positioning groove 124.

[0122] The present application uses specific words to describe the embodiments of the present application, such as "one embodiment", "an embodiment", and / or "some embodiments" to refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0123] Although the present invention is disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. A side panel fixing structure of a hood system, used for detachably fixing a side panel (104) of a hood system (10), wherein the hood system further comprises an upper cover (107), characterized in that: The fixed structure includes: a positioning assembly, used for positioning the side panel (104) on the upper cover (104); a rotating lock buckle (106), comprising a column (121) and a mounting panel (123), wherein the column (121) is provided with a positioning groove (120); and The engaging member is integrally formed with the upper cover (107) and is used to engage with the positioning groove (120) to axially limit the rotating lock (106) and allow the rotating lock (106) to rotate, thereby allowing the mounting panel (123) to adjust its relative position with the positioning assembly by its own rotational position, thereby adjusting the fixing state of the side panel.

2. The side panel fixing structure of the hood system according to claim 1, characterized in that: The engaging member comprises an elastic body and a hook (116), wherein the hook (116) is used to engage the positioning groove (120), and the elastic body is configured to be able to be squeezed and deflected by the column (121) when in contact with the column (121).

3. The side panel fixing structure of the wind shield system according to claim 2, characterized in that: The hook (116) is interference-fitted with the groove surface of the positioning groove (120).

4. The side panel fixing structure of the wind shield system according to claim 2, characterized in that: The elastic body is a cantilever beam (113), and the upper cover (107) further comprises a cantilever beam offset space (114) located on one side of the cantilever beam (113).

5. The side panel fixing structure of the wind shield system according to claim 1, characterized in that: The engaging member is an elastic protrusion, which is arranged on the inner periphery of the locking cavity (112) and is located on the axial movement path of the column (121) and is used to engage with the positioning groove (120). The elastic protrusion is configured to be squeezed and deformed when in contact with the column (121).

6. The side panel fixing structure of the wind shield system according to any one of claims 1, characterized in that: The positioning groove (120) is a circumferential annular groove arranged on the cylindrical surface of the column (121).

7. The side panel fixing structure of the wind shield system according to claim 6, characterized in that: The circumferential ring groove includes a terminal end (152), and the column (121) includes an axial groove (151) communicating with the terminal end (152).

8. The side panel fixing structure of the wind shield system according to claim 2, characterized in that: The positioning groove (120) is a T-shaped groove arranged on the axial end surface of the column (121), and the hook (116) includes a radial limiting protrusion (119) for being engaged with the T-shaped groove.

9. The side panel fixing structure of the wind shield system according to claim 1, characterized in that: The positioning assembly comprises a receiving portion (105), the receiving portion (105) comprising a recessed area (110) for receiving the side panel (104) and a position-limiting oblique guide surface (109), and the side panel (104) further comprises a chamfered surface (130) cooperating with the position-limiting oblique guide surface (109).

10. The side panel fixing structure of the wind shield system according to claim 1, characterized in that: The upper cover (107) includes a locking cavity (112) for the column (121) to extend into, and the engaging member is arranged in the locking cavity (112).

11. The side panel fixing structure of the wind shield system according to any one of claims 1 to 10, characterized in that: The positioning assembly comprises a protruding positioning column (108) and a positioning hole (129); the protruding positioning column (108) is arranged on the upper cover (107); the positioning hole (129) is arranged on the side panel (104) for allowing the protruding positioning column (108) to pass through; The mounting panel (123) comprises a positioning groove (124) for cooperating with the protruding positioning column (108).

12. The side panel fixing structure of the wind shield system according to claim 1, characterized in that: The column (121) comprises a rotation limiting protrusion (122), and the locking cavity (112) comprises a rotation limiting boss (111), wherein the rotation limiting boss (111) is used to block the rotation limiting protrusion (122) to limit the rotation of the column (121).

13. An electronic balance, comprising a wind shield system and a balance body, wherein the wind shield system comprises an upper cover, a bottom shell and a side panel, characterized in that: The side panels are fixed by one or more side panel fixing structures of the wind shield system according to any one of claims 1-12.

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