Quick dismounting and mounting mechanism for fan cover and balance body and electronic balance with quick dismounting and mounting mechanism

Abstract

The invention provides a quick disassembly and assembly mechanism for a fan cover and a balance body and an electronic balance thereof. The quick disassembly and assembly mechanism is characterized in that at least one group of claw-shaped structures are arranged on the bottom surface of a locking ring; the fan cover bottom shell is provided with at least one set of hollow avoiding spaces, the two sides of the bottom of each avoiding space are each provided with a bottom shell supporting avoiding face, the claw-shaped structures are clamped into the corresponding avoiding spaces to be connected with the fan cover bottom shell, and the claw-shaped structures can rotate in the avoiding spaces; the balance upper cover is provided with at least one set of locking stress beams and locking ring upper cover rotating space, the locking stress beams are located above the locking ring upper cover rotating space, and the claw-shaped structures are installed in the locking ring upper cover rotating space. According to the invention, the locking ring clamping hook of the fan cover and the balance body locking stress beam are matched to complete assembly, so that the design is more optimized, the reliability is higher, and the operation of a customer is more convenient.

Description

Technical Field

[0001] The invention relates to the field of electronic balances, and in particular to a quick disassembly and assembly mechanism for a wind shield and a balance body and an electronic balance thereof. Background Art

[0002] In the field of electronic balances, the balance wind shield is an indispensable part. Usually, high-precision electronic balances are easily affected by external conditions during use, such as air flow, natural wind, and external vibrations, which will cause the weighing of the electronic balance to fluctuate. The role of the balance wind shield is to effectively improve the influence of these external factors, so as to make the weighing data more accurate.

[0003] There are two main ways to connect the existing balance wind shield and the balance body: one is to use screws to fix the connection; the other is to lock the related structures.

[0004] Both methods are not very convenient when assembling the balance wind shield and the balance body, which affects the production efficiency. In addition, it is also difficult for customers and maintenance personnel to remove the balance wind shield from the balance body.

[0005] In view of this, the inventor of the present application has designed a quick disassembly and assembly mechanism for a wind hood and a balance body and an electronic balance thereof, in order to overcome the above technical problems. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the defects in the prior art such as difficulty in disassembling and assembling a balance wind hood and a balance body and affecting production efficiency, and to provide a quick disassembling and assembling mechanism for a wind hood and a balance body and an electronic balance thereof.

[0007] The present invention solves the above technical problems through the following technical solutions:

[0008] The present invention provides a quick disassembly and assembly mechanism for a wind shield and a balance body, wherein the quick disassembly and assembly mechanism comprises:

[0009] A locking ring, the bottom surface of which is provided with at least one group of claw-shaped structures;

[0010] A wind shield bottom shell, wherein at least one set of hollow avoidance spaces is arranged on the wind shield bottom shell, and a bottom shell supporting avoidance surface is arranged on both sides of the bottom of each avoidance space, respectively, and the claw-shaped structure is inserted into the corresponding avoidance space and connected to the wind shield bottom shell, and the claw-shaped structure can rotate in the avoidance space;

[0011] A balance cover, wherein the balance cover is provided with at least one group of locking force beams and a locking ring cover rotation space, the locking force beams are located above the locking ring cover rotation space, and the claw-shaped structure is installed in the locking ring cover rotation space;

[0012] The locking ring is mounted on the upper end surface of the wind shield bottom shell through the claw-shaped structure, and the wind shield bottom shell is further mounted on the upper end surface of the balance cover through the claw-shaped structure;

[0013] When the locking ring is rotated relative to the balance cover until the claw-shaped structure and the locking force beam are locked, the first side portion of the claw-shaped structure is located below the corresponding bottom shell support avoidance surface; when the locking ring is rotated relative to the balance cover until the claw-shaped structure and the locking force beam are unlocked, the second side portion of the claw-shaped structure is located below the corresponding bottom shell support avoidance surface.

[0014] According to one embodiment of the present invention, each of the claw-shaped structures comprises:

[0015] a main body, the main body extending downward from the locking ring;

[0016] A locking ring hook, which is arranged at the bottom of the main body and extends toward the center of the locking ring, and is used to lock or unlock the locking force beam;

[0017] Two horizontally rotating cantilever beams are respectively arranged on both sides of the main body, with a gap between the horizontally rotating cantilever beams and the bottom surface of the locking ring, and are used to cooperate with the bottom shell support avoidance surface to limit.

[0018] According to one embodiment of the present invention, a mounting portion matching the shape of the locking ring is provided on the bottom shell of the wind shield, the middle of the mounting portion is a first circular wall protruding upward, the avoidance space is arranged around the outer side of the first circular wall, and the locking ring is sleeved on the first circular wall.

[0019] According to one embodiment of the present invention, a second circular wall protruding upward is provided on the balance cover, the locking force beam is arranged on the outer wall surface of the second circular wall, the rotation space of the locking ring cover is arranged on the outer periphery of the second circular wall, and the first circular wall corresponds to the second circular wall up and down.

[0020] According to one embodiment of the present invention, when the locking ring and the wind shield bottom shell are in an initial state after assembly, at least a portion of the structure of the horizontal rotating cantilever beam located on both sides of the claw-shaped structure is respectively located below the corresponding bottom shell support avoidance surface.

[0021] According to an embodiment of the present invention, a cantilever beam hook assembly is provided on the outer side of the claw-shaped structure, and the cantilever beam hook assembly is in contact with the outer ring wall surface of the avoidance space.

[0022] According to one embodiment of the present invention, the cantilever beam hook assembly includes a cantilever beam, a cantilever beam bend and a cantilever beam hook which are connected in sequence as an integral whole, and a cantilever beam contact protrusion is arranged on the outer end surface of the cantilever beam hook, and the cantilever beam contact protrusion contacts with the outer ring wall surface of the avoidance space.

[0023] According to one embodiment of the present invention, at least one bottom shell positioning groove is arranged on the outer ring wall surface of the avoidance space, and the bottom shell positioning groove is close to the bottom shell support avoidance surface and is used to clamp the cantilever beam contact protrusion.

[0024] According to one embodiment of the present invention, a plurality of pairs of locking and rotating finger placement grooves are provided on the upper end surface of the locking ring, and a rotation force-bearing rib is provided between each pair of the locking and rotating finger placement grooves.

[0025] According to one embodiment of the present invention, a bottom shell limiting space is further provided on the bottom shell of the wind hood, and a locking ring limiting boss is further provided on the bottom surface of the locking ring. The locking ring limiting boss is installed in the bottom shell limiting space, and the locking ring limiting boss can slide in the bottom shell limiting space.

[0026] According to an embodiment of the present invention, locking ring hook sliding guide surfaces are respectively provided on both sides of the locking ring hook.

[0027] According to one embodiment of the present invention, a locking ring engaging guide surface is provided at the outer end of the horizontal rotating cantilever beam.

[0028] According to an embodiment of the present invention, two side walls of the escape space are provided with wind shield bottom shell guide surfaces.

[0029] The present invention provides an electronic balance, which is characterized in that the electronic balance comprises the above-mentioned quick disassembly and assembly mechanism for the wind cover and the balance body.

[0030] The positive and progressive effects of the present invention are:

[0031] The quick disassembly and assembly mechanism for the wind shield and the balance body and the electronic balance of the present invention have the following advantages:

[0032] 1. The traditional method of connecting the balance wind shield by screws is optimized to a method in which the locking ring hook of the wind shield cooperates with the locking force beam of the balance body.

[0033] Second, the fast installation and disassembly of the balance wind shield can be completed by the cooperation between the locking ring hook and the locking force beam of the balance body, thereby solving the problem of inconvenient installation and disassembly of the balance wind shield.

[0034] 3. The user only needs to lock or release the structure according to the mark to easily complete the fixation and separation of the balance wind shield and the balance body, thereby realizing the overall installation or disassembly of the balance wind shield.

[0035] 4. The design is more optimized, with higher reliability and more convenient operation for customers.

[0036] 5. It is more convenient for customers to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] 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 the same reference numerals always represent the same features, wherein:

[0038] Figure 1 It is a three-dimensional diagram of the electronic balance of the present invention.

[0039] Figure 2 The figure is a three-dimensional diagram of the balance wind shield in the electronic balance of the present invention.

[0040] Figure 3 The exploded view is of the quick disassembly and assembly mechanism for the wind shield and the balance body of the present invention.

[0041] Figure 4 The present invention is a stereoscopic view of the front side of the locking ring in the quick disassembly and assembly mechanism for the wind shield and the balance body.

[0042] Figure 5 It is a stereoscopic view of the reverse side of the locking ring in the quick disassembly and assembly mechanism for the wind shield and the balance body of the present invention.

[0043] Figure 6 The present invention is a schematic structural diagram of the front side of the mounting portion on the bottom shell of the wind shield in the quick disassembly and assembly mechanism for the wind shield and the balance body.

[0044] Figure 7 The present invention is a schematic structural diagram of the reverse side of the mounting portion on the bottom shell of the wind shield in the quick disassembly and assembly mechanism for the wind shield and the balance body.

[0045] Figure 8 The present invention is a schematic structural diagram of the assembly position of the balance upper cover in the quick disassembly and assembly mechanism for the wind shield and the balance body.

[0046] Fig. 9 for Figure 8 Section view along line AA.

[0047] Fig.10It is a front state schematic diagram of the locking ring and the bottom shell of the wind shield in the quick disassembly and assembly mechanism for the wind shield and the balance body of the present invention at the initial preparation assembly position.

[0048] Fig.11 The schematic diagram is a bottom surface state diagram of the locking ring and the bottom shell of the wind shield in the quick disassembly and assembly mechanism for the wind shield and the balance body of the present invention at the initial preparation assembly position.

[0049] Fig.12 The diagram is a front view of the assembled initial position of the locking ring and the bottom shell of the wind shield in the quick disassembly and assembly mechanism of the wind shield and the balance body of the present invention.

[0050] Fig.13 The diagram is a schematic diagram of the reverse side of the assembled initial position of the locking ring and the bottom shell of the wind shield in the quick disassembly and assembly mechanism of the wind shield and the balance body of the present invention.

[0051] Fig.14 The present invention is a schematic diagram of the front state of the assembly position when the locking ring and the bottom shell of the wind shield are in the unlocked state in the quick disassembly and assembly mechanism for the wind shield and the balance body of the present invention.

[0052] Fig.15 The present invention is a schematic diagram of the reverse side of the assembly position of the locking ring and the bottom shell of the wind shield when they are in the unlocked state in the quick disassembly and assembly mechanism for the wind shield and the balance body of the present invention.

[0053] Fig.16 The present invention is a schematic diagram of the front state of the assembly position when the locking ring and the bottom shell of the wind shield are in a locked state in the quick disassembly and assembly mechanism for the wind shield and the balance body of the present invention.

[0054] Fig.17 The present invention is a schematic diagram of the reverse side of the assembly position when the locking ring and the bottom shell of the wind shield are in a locked state in the quick disassembly and assembly mechanism for the wind shield and the balance body of the present invention.

[0055] Fig.18 The present invention is a partial front cross-sectional view of the assembly position of the locking ring, the bottom shell of the wind shield and the upper cover of the balance when the locking ring, the bottom shell of the wind shield and the upper cover of the balance are in the unlocked state.

[0056] Fig.19 The present invention is a side partial cross-sectional view of the assembly position of the locking ring, the bottom shell of the wind shield and the balance body in the quick disassembly and assembly mechanism of the wind shield and the balance body when the locking ring, the bottom shell of the wind shield and the balance cover are in the unlocked state.

[0057] Fig. 20 The invention is a horizontal partial cross-sectional view of the assembly position of the locking ring, the bottom shell of the wind shield and the upper cover of the balance when the locking ring, the bottom shell of the wind shield and the upper cover of the balance are in the unlocked state in the quick disassembly and assembly mechanism for the wind shield and the balance body of the present invention.

[0058] Fig.21The present invention is a partial cross-sectional view of the assembly position of the locking ring, the bottom shell of the wind shield and the upper cover of the balance when the locking ring, the bottom shell of the wind shield and the upper cover of the balance are in a locked state.

[0059] Fig. 22 The present invention is a side partial cross-sectional view of the assembly position of the locking ring, the bottom shell of the wind shield and the upper cover of the balance when the locking ring, the bottom shell of the wind shield and the upper cover of the balance are in a locked state.

[0060] Fig.23 The invention is a horizontal partial cross-sectional view of the assembly position of the locking ring, the bottom shell of the wind shield and the upper cover of the balance when the locking ring, the bottom shell of the wind shield and the upper cover of the balance are in the unlocked state in the quick disassembly and assembly mechanism for the wind shield and the balance body of the present invention.

[0061] [Reference Signs]

[0062] Balance wind shield 100

[0063] Balance body 200

[0064] Wind shield cover 110

[0065] Wind shield column 120

[0066] Wind shield bottom shell 130

[0067] Balance cover 210

[0068] Locking ring 300

[0069] Main body 310

[0070] Locking ring hook 320

[0071] Horizontal rotating cantilever beam 330

[0072] Cantilever beam 340

[0073] Cantilever beam bending 350

[0074] Cantilever beam hook 360

[0075] Cantilever beam contact protrusion 361

[0076] Locking and rotating finger placement slot 370

[0077] Rotating force bar 371

[0078] Unlock logo 400

[0079] Lock mark 500

[0080] Rotation direction mark 600

[0081] Avoidance Space 131

[0082] Bottom shell support avoidance surface 132

[0083] First annular wall 133

[0084] Bottom shell positioning groove 134

[0085] Bottom shell limit space 135

[0086] Locking ring limit boss 380

[0087] Locking load beam 211

[0088] Locking ring cover rotation space 212

[0089] Second annular wall 213

[0090] The locking ring is clamped into the guide surface 331

[0091] Wind shield bottom shell guide surface 1311

[0092] Upper cover guide chute 214

[0093] Lock the bottom contact surface 215 of the load-bearing beam

[0094] Locking ring hook sliding guide surface 321 DETAILED DESCRIPTION

[0095] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0096] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to preferred embodiments of the present invention, examples of which are shown in the accompanying drawings. Wherever possible, the same reference numerals will be used throughout the drawings to represent the same or similar parts.

[0097] Furthermore, although the terms used in the present invention are selected from well-known and commonly used terms, some terms mentioned in the present invention specification may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description of this document.

[0098] Furthermore, it is required that the present invention be understood not only by the actual terms used but also by the meanings connoted by each term.

[0099] like Figure 1 As shown, the present invention discloses an electronic balance, including a balance wind shield 100 and a balance body 200, wherein the balance wind shield 100 is mounted on the balance body 200. Figure 2 As shown, the balance wind shield 100 includes a wind shield upper cover 110, a wind shield column 120 and a wind shield bottom shell 130, which are interconnected to form a frame structure.

[0100] The special feature is that a quick disassembly structure is used between the balance wind shield 100 and the balance body 200 of the present application, which is used for the quick disassembly mechanism of the wind shield and the balance body. The user only needs to lock or release the structure according to the mark to easily complete the fixing and separation of the balance wind shield and the balance body, thereby realizing the overall installation or removal of the balance wind shield.

[0101] See also Figure 3 The present invention discloses a quick disassembly and assembly mechanism for a wind shield and a balance body, which comprises: a locking ring 300, a wind shield bottom shell 130 and a balance cover 210. The wind shield bottom shell 130 is provided with an assembly position whose shape matches that of the locking ring 300, and the locking ring 300 is installed at the assembly position and connected with the wind shield bottom shell 130. The balance cover 210 is provided with a corresponding assembly position, and the locking ring 300 is installed at the assembly position of the balance cover 210 together with the wind shield bottom shell 130. The locking ring 300 can be quickly locked and unlocked at the assembly position of the balance cover 210 through the locking structure.

[0102] like Figure 4 and Figure 5 As shown, in this embodiment, the bottom surface of the locking ring 300 is provided with at least one group of claw-shaped structures (the number of a group here is not limited, and can be two, three or more, all of which are applicable to the technical solution of the present invention). Preferably, the claw-shaped structures described herein are evenly distributed on the bottom surface of the locking ring 300. In one embodiment, each of the claw-shaped structures may preferably include a main body 310, a locking ring hook 320 and two horizontally rotating cantilever beams 330. The main body 310 extends downward from the locking ring 300, for example, from the bottom surface or side surface of the locking ring 300. The locking ring hook 320 is provided at the bottom of the main body 310 and extends toward the center of the locking ring 300, for locking or unlocking the balance cover 210. The horizontally rotating cantilever beams 330 are respectively provided on both sides of the main body 310, and there is a gap between them and the bottom surface of the locking ring 300.

[0103] In one embodiment, a cantilever beam hook assembly is provided on the outer side of the claw-shaped structure, and the cantilever beam hook assembly may preferably include a cantilever beam 340, a cantilever beam bend 350 and a cantilever beam hook 360 connected in sequence. A cantilever beam contact protrusion 361 may be further provided on the outer end surface of the cantilever beam hook 360. The cantilever beam hook assembly here is mainly used to clamp the air hood bottom shell 130.

[0104] In addition, further, a plurality of pairs of locking rotating finger placement grooves 370 are provided on the upper end surface of the locking ring 300. For example, in the embodiment of the present application, four symmetrically distributed locking rotating finger placement grooves 370 are cited, and a rotation force rib 371 is provided between each pair of locking rotating finger placement grooves 370. This structure can facilitate the customer to rotate the locking ring, making the operation more convenient and improving ergonomics.

[0105] For example Figure 4 As shown, an unlock mark 400, a lock mark 500 and a rotation direction mark 600 can also be set on the upper end surface of the locking ring 300, so as to clearly inform the customer how to rotate the locking ring 300 to reach the unlocking or locking state, thereby completing the rapid disassembly and installation and fixing operation of the balance wind hood.

[0106] like Figure 6 and Figure 7 As shown, in this embodiment, at least one group of hollow avoidance spaces 131 is provided on the bottom shell 130 of the wind shield (the number of a group here is not limited, and can be two, three or more, all of which are applicable to the technical solution of the present invention). Preferably, the avoidance spaces 131 described herein are evenly distributed on the bottom shell 130 of the wind shield. A bottom shell support avoidance surface 132 is provided on both sides of the bottom of each avoidance space 131. When the locking ring 300 is assembled with the bottom shell 130 of the wind shield, the claw-shaped structure is inserted into the corresponding avoidance space 131 and connected to the bottom shell 130 of the wind shield, and the claw-shaped structure can rotate in the avoidance space 131. The horizontal rotating cantilever beams 330 on both sides of the claw-shaped structure are used to match and engage with the bottom shell support avoidance surface 132 up and down, so as to reach the position of limiting the unlocking and locking of the locking ring 300. At the same time, the cantilever beam hook assembly located on the outer side of the claw-shaped structure contacts the outer ring wall of the avoidance space 131. Furthermore, the cantilever beam contact protrusion 361 on the cantilever beam hook 360 of the cantilever beam hook assembly may contact the outer ring wall surface of the avoidance space 131. This structure can further improve the connection firmness between the locking ring 300 and the wind shield bottom shell 130.

[0107] In one embodiment, a mounting portion matching the shape of the locking ring 300 is provided on the bottom shell 130 of the wind shield, and the middle of the mounting portion is a first circular wall 133 protruding upward, and the avoidance space 131 is arranged around the outer side of the first circular wall 133, and the locking ring 300 is sleeved on the first circular wall 133. When the locking ring 300 is assembled with the bottom shell 130 of the wind shield, the locking ring 300 is sleeved on the first circular wall 133. When the locking ring 300 and the bottom shell 130 of the wind shield are in the initial state after the assembly, at least a part of the structure of the horizontal rotating cantilever beam 330 located on both sides of the claw-shaped structure is respectively located below the corresponding bottom shell support avoidance surface 132 (such as Fig.11 and Fig.13).

[0108] In another embodiment, at least one bottom shell positioning groove 134 is further provided on the outer ring wall surface of the avoidance space 131, and the bottom shell positioning groove 134 is close to the bottom shell support avoidance surface 132, and is used to snap into the cantilever beam contact protrusion 361. When the locking ring 300 is about to be locked, the cantilever beam contact protrusion 361 passes through the bottom shell positioning groove 134 and snaps into the bottom shell positioning groove 134, thereby reminding the user of the state of the locking ring 300.

[0109] In another embodiment, further, a bottom shell limiting space 135 is provided on the wind hood bottom shell 130, and a locking ring limiting boss 380 is provided on the bottom surface of the locking ring 300. The locking ring limiting boss 380 is installed in the bottom shell limiting space 135, and the locking ring limiting boss 380 is slidable in the bottom shell limiting space 135 to limit the rotation range of the locking ring.

[0110] like Figure 8 and Fig. 9 As shown, in this embodiment, at least one group of locking force beams 211 and locking ring upper cover rotation space 212 are arranged on the balance cover 210 (the number of a group here is not limited, and can be two, three or more, all of which are applicable to the technical solution of the present invention). Preferably, the locking force beams 211 described herein are evenly distributed on the balance cover 210. The locking force beams 211 are located above the locking ring upper cover rotation space 212, and the claw-shaped structure is installed in the locking ring upper cover rotation space 212. After the locking ring 300 and the wind shield bottom shell 130 are connected together, they are connected to the balance cover 210, and the claw-shaped structure is installed in the locking ring upper cover rotation space 212.

[0111] The locking ring 300 is mounted on the upper end surface of the wind shield bottom shell 130 through the claw-shaped structure, and the wind shield bottom shell 130 is further mounted on the upper end surface of the balance cover 210 through the claw-shaped structure.

[0112] When the locking ring 300 rotates relative to the balance cover 210 until the claw-shaped structure is locked with the locking force beam 211, the first side portion C (eg Fig.17 When the locking ring 300 rotates relative to the balance cover 210 until the claw-shaped structure is unlocked from the locking force beam 211, the second side portion D of the claw-shaped structure (as shown in FIG. Fig.15 As shown) is located below the corresponding bottom shell support avoidance surface 132.

[0113] In one embodiment, further, a second annular wall 213 protruding upward is provided on the balance cover 210, the locking force beam 211 is arranged on the outer wall surface of the second annular wall 213, the locking ring cover rotation space 212 is arranged on the outer periphery of the second annular wall 213, and the first annular wall 133 corresponds to the second annular wall 213 up and down. This structure can make the locking ring 300 and the balance cover 210 concentrically aligned up and down, so that the installation of the two is more secure and stable. The claw-shaped structure of the locking ring 300 passes through the avoidance space 131 and is installed in the locking ring cover rotation space 212. Through the rotation of the locking ring 300, the locking ring hook 320 and the locking force beam 211 are locked or unlocked.

[0114] Based on the above-described structure of each component, the assembly process of the locking ring 300, the wind shield bottom shell 130 and the balance cover 210 is described in detail below. Fig.10 As shown, first, the operator holds the locking ring 300 so that the locking ring 300 is located directly above the air hood bottom shell 130, and the circular ring area inside the locking ring 300 is concentric with the circular hole in the middle of the air hood bottom shell 130. At this time, the position of the locking ring 300 is adjusted. The outer end of the horizontal rotating cantilever beam 330 of the locking ring 300 is provided with a locking ring snap-in guide surface 331. Correspondingly, air hood bottom shell guide surfaces 1311 are provided on both side walls of the avoidance space 131. During installation, the locking ring snap-in guide surface 331 is located directly above the air hood bottom shell guide surface 1311, and the locking ring 300 and the air hood bottom shell 130 are in the initial preparation position for assembly (that is, in the initial state). The bottom view in this state is as shown in FIG. Fig.11 shown.

[0115] like Fig.10 and Fig.11 As shown, a certain amount of interference is designed between the horizontal rotating cantilever beam 330 of the locking ring 300 and the bottom shell support avoidance surface 132. At this time, the locking ring 300 is pressed vertically downward so that the main body 310 of the claw-shaped structure is inserted into the avoidance space 131 of the bottom shell claw-shaped structure of the wind hood bottom shell 130. During this action, the horizontal rotating cantilever beam 330 of the locking ring 300 is squeezed by the wind hood bottom shell 130 and undergoes plastic deformation, so that the locking ring is inserted into the guide surface 331 and can easily slide with the wind hood bottom shell guide surface 1311, and the locking ring 300 continues to be installed downward. The horizontal rotating cantilever beam 330 of the locking ring 300 stops being stressed and returns to its original state. At this point, the locking ring 300 has been inserted into the wind hood bottom shell 130, and the horizontal rotating cantilever beam 330 is entirely located below the bottom shell support avoidance surface 132. The bottom view at this time is as shown in FIG. Fig.11 shown.

[0116] When the locking ring 300 is initially inserted into the air shield bottom shell 130, the cantilever beam contact protrusion 361 on the cantilever beam hook 360 contacts the air shield bottom shell 130. When the locking ring 300 moves downward, the cantilever beam contact protrusion 361 is squeezed and deformed, causing the cantilever beam bend 350 and the cantilever beam 340 to move inward.

[0117] When the locking ring 300 has completely entered the air shield bottom shell 130, the cantilever beam contact protrusion 361 continues to press the air shield bottom shell 130. Both cantilever beam hooks 360 are subjected to a radial inward pressure. The two directions are opposite and the size is the same, which can keep the locking ring 300 in the center position on the air shield bottom shell 130 at all times.

[0118] like Fig.12 and Fig.13 As shown, the locking ring 300 is in the initial position of the assembly. When the locking ring 300 is installed into the wind shield bottom shell 130, the locking ring limiting boss 380 can just enter the bottom shell limiting space 135. Here, the locking ring limiting boss 380 has two main functions: one is to limit the rotation of the rear locking ring 300 to two extreme positions; the other is to prevent fooling.

[0119] Specifically, when the customer initially installs the locking ring 300 to the air shield bottom shell 130 (i.e., not in accordance with Fig.10 If the locking ring 300 is inserted into the air hood bottom shell 130, the locking ring limiting boss 380 will interfere with the air hood bottom shell 130 and cannot be installed correctly. Therefore, by providing the locking ring limiting boss 380, the uniqueness of the installation position of the locking ring 300 on the air hood bottom shell 130 can be ensured.

[0120] like Fig.14 and Fig.15 As shown, when the locking ring and the bottom shell of the wind shield are in the unlocked state, the locking ring 300 is rotated toward the unlocking mark 400 by contacting the locking finger placement groove 370 and rotating the force-bearing rib 371 with the finger. At this time, the locking ring limit boss 380 also moves in the bottom shell limit space 135. When the locking ring limit boss 380 reaches the limit position, the locking ring 300 is in the unlocked state. The front assembly diagram at this time is as shown in FIG. Fig.14 , the reverse assembly diagram is as follows Fig.15 shown.

[0121] Depend on Fig.15It can be seen that when the locking ring 300 rotates, the claw-shaped structure as a whole rotates along with it. Two bottom shell positioning grooves 134 can be provided in one avoidance space 131, and the positions of the two bottom shell positioning grooves 134 correspond to the unlocked state and the locked state respectively. When the unlocked state is about to be entered ( Figures 13 to 15 During the process), the cantilever beam contact protrusion 361 is inserted into a bottom shell positioning groove 134, making a "click" sound, informing the customer that the locking ring 300 is in an unlocked state.

[0122] like Fig.16 and Fig.17 As shown, when the locking ring and the bottom shell of the wind shield are in a locked state, the locking ring 300 is rotated toward the direction of the locking mark 500 by contacting the locking finger placement groove 370 and rotating the force-bearing rib 371 with the finger. At this time, the locking ring limit boss 380 also moves in the bottom shell limit space 135. When the locking ring limit boss 380 reaches the limit position, the locking ring 300 is in a locked state. The front assembly diagram at this time is as shown in FIG. Fig.16 , the reverse assembly diagram is as follows Fig.17 shown.

[0123] Depend on Fig.17 It can be seen that when the locking ring 300 rotates, the claw-shaped structure as a whole rotates along with the wind shield bottom shell 130. Figures 15 to 17 During the process), the cantilever beam contact protrusion 361 is inserted into another bottom shell positioning groove 134, making a "click" sound, informing the customer that the locking ring 300 is in a locked state.

[0124] When in Fig.15 In the unlocked state shown in FIG. 1 , one side of the claw-shaped structure (i.e., the horizontal rotating cantilever beam 330 on one side) is located above the bottom shell support avoidance surface 132 (below in the front view, as shown in FIG. 1 ). Fig.14 shown). Fig.17 In the locked state shown in FIG. 1 , the other side of the claw-shaped structure (i.e., the horizontal rotating cantilever beam 330 on the other side) is located above the bottom shell support avoidance surface 132 (below in the front view, as shown in FIG. 1 ). Fig.16 shown).

[0125] When the locking ring and the bottom shell of the fan cover are in Fig.13 In the assembled initial position shown, parts of the horizontal rotating cantilever beams 330 on the left and right sides of the claw-shaped structure are just above the bottom shell support avoidance surfaces 132 on both sides.

[0126] It can be seen from this that Fig.13 , Fig.15 and Fig.17The claw-shaped structures of the locking ring and the wind shield bottom shell in three states (initial position, unlocked state and locked state) are respectively shown to have part of the structure located below the bottom shell support avoidance surface 132, thereby ensuring that the locking ring 300 will not easily fall off from the wind shield bottom shell 130, and it can be effectively and stably connected.

[0127] The above part is a description of the assembly of the locking ring 300 and the wind shield bottom shell 130. At this point, the locking ring 300 and the wind shield bottom shell 130 become one component, and then the two are assembled together with the balance cover 210.

[0128] like Fig.18 , Fig.19 and Fig. 20 As shown in FIG. 1 , the locking ring, the wind shield bottom shell and the balance cover are in the unlocked state. Turn the locking ring 300 so that it is in the unlocked state on the wind shield bottom shell 130 (as shown in FIG. 1 ). Fig.14 and Fig.15 As shown), the wind shield bottom shell 130 is assembled on the balance cover 210. At this time, the wind shield bottom shell 130 and the balance cover 210 are in an unlocked state. Figure 1 ), the balance wind shield 100 and the balance body 200 are in a detachable state, and the balance wind shield 100 can be easily taken down from the balance body 200. The locking ring 300 is in an unlocked state.

[0129] Depend on Fig. 20 It can be seen that there is a certain distance between the locking ring hook 320 and the locking force beam 211 , and the two are not in a locked state. At this time, the wind shield bottom shell 130 with the locking ring 300 can be directly removed from the balance cover 210 .

[0130] The above is the initial position of the locking ring 300, the wind shield bottom shell 130 and the balance cover 210 when they are installed. Then manually rotate the locking ring 300 so that the locking ring 300 rotates in the direction of the locking mark 500. When a "click" sound is heard, the locking ring 300 reaches the locked state. At this time, the wind shield bottom shell 130 and the balance cover 210 are in the locked state. Figure 1 ), the balance wind shield 100 and the balance body 200 are in a fixed state, and the balance wind shield 100 cannot be removed from the balance body 200. At this time, the locking ring 300, the wind shield bottom shell 130 and the balance cover 210 are in a locked state, and the corresponding assembly position is as shown in FIG. Fig.21 , Fig. 22 and Fig.23 shown.

[0131] like Fig.21As shown, the locking ring hook 320 and the locking force beam 211 are in a locked state, and the bottom contact surface 215 of the locking force beam and the locking ring hook 320 are in contact with each other and tightly connected. The entire claw-shaped structure is located in the rotation space 212 of the locking ring upper cover.

[0132] In addition, the two side edges of the locking ring hook 320 are set as inclined surfaces, namely, the locking ring hook sliding guide surfaces 321. At the same time, the bottom of the locking force beam 211 is provided with a chamfer, namely, the upper cover guide inclined groove 214. The locking ring 300 is on the balance upper cover 210, and the unlocked state (such as Fig. 20 As shown) rotate to a fixed state (as shown Fig.23 During the process shown in FIG. 2 , the locking ring hook sliding guide surface 321 and the upper cover guide inclined groove 214 cooperate with each other, so that the locking ring hook 320 can be easily inserted into the bottom of the locking force beam 211 to complete the locking function. For example, Fig.23 It can be clearly seen in the figure that the locking ring hook 320 is located below the locking force beam 211 .

[0133] In summary, the quick disassembly and assembly mechanism for the wind shield and the balance body and the electronic balance of the present invention have the following advantages:

[0134] 1. The traditional method of connecting the balance wind shield by screws is optimized to a method in which the locking ring hook of the wind shield cooperates with the locking force beam of the balance body.

[0135] Second, the fast installation and disassembly of the balance wind shield can be completed by the cooperation between the locking ring hook and the locking force beam of the balance body, thereby solving the problem of inconvenient installation and disassembly of the balance wind shield.

[0136] 3. The user only needs to lock or release the structure according to the mark to easily complete the fixation and separation of the balance wind shield and the balance body, thereby realizing the overall installation or disassembly of the balance wind shield.

[0137] 4. The design is more optimized, with higher reliability and more convenient operation for customers.

[0138] 5. It is more convenient for customers to clean.

[0139] For those skilled in the art, the above invention disclosure is only used as an example and does not constitute a limitation of the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements and amendments to the present application. Such modifications, improvements and amendments are suggested in the present application, so such modifications, improvements and amendments still belong to the spirit and scope of the exemplary implementation of the present application.

[0140] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" 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 positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0141] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A quick disassembly and assembly mechanism for a wind shield and a balance body, characterized in that: The quick disassembly and assembly mechanism comprises: A locking ring, the bottom surface of which is provided with at least one group of arranged claw-shaped structures; A wind shield bottom shell, wherein at least one set of hollow avoidance spaces is arranged on the wind shield bottom shell, and a bottom shell supporting avoidance surface is arranged on both sides of the bottom of each avoidance space, respectively, and the claw-shaped structure is inserted into the corresponding avoidance space and connected to the wind shield bottom shell, and the claw-shaped structure can rotate in the avoidance space; A balance cover, wherein the balance cover is provided with at least one group of locking force beams and a locking ring cover rotation space, the locking force beams are located above the locking ring cover rotation space, and the claw-shaped structure is installed in the locking ring cover rotation space; The locking ring is mounted on the upper end surface of the wind shield bottom shell through the claw-shaped structure, and the wind shield bottom shell is further mounted on the upper end surface of the balance cover through the claw-shaped structure; When the locking ring is rotated relative to the balance cover until the claw-shaped structure and the locking force beam are locked, the first side portion of the claw-shaped structure is located below the corresponding bottom shell support avoidance surface; when the locking ring is rotated relative to the balance cover until the claw-shaped structure and the locking force beam are unlocked, the second side portion of the claw-shaped structure is located below the corresponding bottom shell support avoidance surface.

2. The quick disassembly and assembly mechanism for the wind shield and the balance body according to claim 1, characterized in that: Each of the claw-shaped structures comprises: a main body, the main body extending downward from the locking ring; A locking ring hook, which is arranged at the bottom of the main body and extends toward the center of the locking ring, and is used to lock or unlock the locking force beam; Two horizontally rotating cantilever beams are respectively arranged on both sides of the main body, with a gap between the horizontally rotating cantilever beams and the bottom surface of the locking ring, and are used to cooperate with the bottom shell support avoidance surface to limit.

3. The quick disassembly and assembly mechanism for the wind shield and the balance body according to claim 1, characterized in that: The bottom shell of the wind shield is provided with a mounting portion matching the shape of the locking ring, the middle of the mounting portion is a first circular wall protruding upward, the avoidance space is arranged around the outer side of the first circular wall, and the locking ring is sleeved on the first circular wall.

4. The quick disassembly and assembly mechanism for the wind shield and the balance body according to claim 3, characterized in that: The balance cover is provided with a second circular wall protruding upward, the locking force beam is arranged on the outer wall surface of the second circular wall, the locking ring cover rotation space is arranged on the outer periphery of the second circular wall, and the first circular wall corresponds to the second circular wall up and down.

5. The quick disassembly and assembly mechanism for the wind shield and the balance body according to claim 2, characterized in that: When the locking ring and the wind shield bottom shell are in an initial state after being assembled, at least a portion of the structure of the horizontal rotating cantilever beam located on both sides of the claw-shaped structure is respectively located below the corresponding bottom shell support avoidance surface.

6. The quick disassembly and assembly mechanism for the wind shield and the balance body according to claim 1, characterized in that: A cantilever beam hook assembly is disposed on the outer side of the claw-shaped structure, and the cantilever beam hook assembly is in contact with the outer ring wall surface of the avoidance space.

7. The quick disassembly and assembly mechanism for the wind shield and the balance body according to claim 6, characterized in that: The cantilever beam hook assembly includes a cantilever beam, a cantilever beam bend and a cantilever beam hook which are connected in sequence as an integral whole. A cantilever beam contact protrusion is arranged on the outer end surface of the cantilever beam hook, and the cantilever beam contact protrusion contacts the outer ring wall surface of the avoidance space.

8. The quick disassembly and assembly mechanism for the wind shield and the balance body according to claim 7, characterized in that: At least one bottom shell positioning groove is arranged on the outer ring wall surface of the avoidance space, and the bottom shell positioning groove is close to the bottom shell supporting avoidance surface and is used for clamping the cantilever beam contact protrusion.

9. The quick disassembly and assembly mechanism for the wind shield and the balance body according to claim 1, characterized in that: The upper end surface of the locking ring is provided with a plurality of pairs of locking and rotating finger placement grooves, and a rotation force-bearing rib is provided between each pair of the locking and rotating finger placement grooves.

10. The quick disassembly and assembly mechanism for the wind shield and the balance body according to claim 1, characterized in that: The bottom shell of the wind shield is also provided with a bottom shell limiting space, and the bottom surface of the locking ring is also provided with a locking ring limiting boss, the locking ring limiting boss is installed in the bottom shell limiting space, and the locking ring limiting boss can slide in the bottom shell limiting space.

11. The quick disassembly and assembly mechanism for the wind shield and the balance body according to claim 1, characterized in that: Locking ring hook sliding guide surfaces are respectively arranged on both sides of the locking ring hook.

12. The quick disassembly and assembly mechanism for the wind shield and the balance body according to claim 2, characterized in that: The outer end of the horizontal rotating cantilever beam is provided with a locking ring clamping guide surface.

13. The quick disassembly and assembly mechanism for the wind shield and the balance body according to claim 1, characterized in that: The two side walls of the avoidance space are provided with wind shield bottom shell guide surfaces.

14. An electronic balance, characterized in that: The electronic balance comprises a quick disassembly and assembly mechanism for the wind shield and the balance body as described in any one of claims 1 to 13.

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