Auxiliary watch for parachuting safety

Abstract

The utility model relates to the technical field of communication, and particularly discloses a safety auxiliary watch for parachuting, which comprises a watchcase and a button structure arranged on the side surface of the watchcase. The side surface of the watchcase is provided with an accommodating groove and a through hole penetrating through the bottom wall of the accommodating groove. The button structure comprises a button rod, a button cap arranged at the outer end of the button rod, a spring and a clamp spring. The button cap is movably arranged in the containing groove along the axis of the through hole, the button rod penetrates through the through hole, and the button rod is provided with an abutting inner end used for abutting against a light touch key in the watchcase. The button rod is sleeved with the spring, and the two ends of the spring abut against the button cap and the outer side face of the bottom wall of the containing groove respectively. The clamp spring is clamped in the annular clamping groove in the inner end of the button rod so as to be in stop fit with the inner side face of the bottom wall of the containing groove. According to the auxiliary watch for parachuting safety provided by the utility model, the button structure is convenient to disassemble and assemble, the working efficiency is relatively high, and the installation of other parts in the watch shell is not influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a communication technical field, concretely relates to a watch for parachuting safety assistance. BACKGROUND

[0002] In order to strengthen the safety of parachuting training of new soldiers, the watch for parachuting safety assistance is carried before parachuting. The watch for parachuting safety assistance has the broadcasting functions of prompting the parachuting personnel to open the backup parachute in the emergency, prompting to avoid when the distance between the adjacent parachuting personnel in the air is too close, and reminding to prepare for landing at the required height before landing.

[0003] A watch in the prior art comprises a watch case, a power supply, a control board and a function module arranged in the watch case, a display screen arranged on the front of the watch case, and a button structure for displaying, switching or adjusting the display information. The button structure comprises a button cap, a button rod and a spring. The button structure is installed in the following manner: the button rod and the spring are inserted into the button hole on the watch case from the outside of the watch case, and then the protruding structure is installed on the inner end of the button rod by screw connection. The protruding structure can prevent the button cap and the button rod from being pulled out of the button hole, and is also used to press the light touch button in the watch case to realize the corresponding function of the watch.

[0004] However, the watch in the prior art has the following problems: 1. Since the space inside the watch case is small, the protruding structure is installed or dismounted on the inner end of the button rod by screw connection, which is inconvenient for the operator to operate and requires the use of special tools, thus reducing the work efficiency; 2. The protruding structure occupies additional space inside the watch case, which causes the arrangement of other components in the watch case to be crowded, thereby affecting the design and installation of other components in the watch case. CONTENT OF THE UTILITY MODEL

[0005] The utility model provides a watch for parachuting safety assistance, which aims to solve the technical problems of the prior art that the button structure is inconvenient to dismount and affects the installation of other components in the watch case.

[0006] The watch for parachuting safety assistance comprises a watch case and a button structure arranged at the side of the watch case. A containing groove and a through hole penetrating the bottom wall of the containing groove are arranged at the side of the watch case. The button structure comprises a button rod, a button cap arranged at the outer end of the button rod, and a spring and a catch spring. The button cap is arranged in the containing groove along the axis of the through hole, and the button rod penetrates the through hole. The button rod has an inner end for abutting against the light touch button in the watch case. The spring is sleeved on the button rod, and the two ends of the spring are respectively in abutment with the button cap and the outer side of the bottom wall of the containing groove. The catch spring is arranged in the annular clamping groove at the inner end of the button rod to abut against the inner side of the bottom wall of the containing groove.

[0007] Preferably, an installation cylinder is arranged at the outer side of the bottom wall of the accommodating groove, the button rod penetrates through the installation cylinder, and a first sealing ring is fixedly arranged on the inner wall of the installation cylinder and in sliding sealing cooperation with the button rod.

[0008] Preferably, a limiting protrusion is arranged at the edge of the outer side of the bottom wall of the accommodating groove, and a limiting groove matched with the limiting protrusion is arranged at the corresponding position of the button cap, so as to limit the rotation of the button cap around the axis thereof.

[0009] Preferably, the watch case comprises a main shell and a back shell; the main shell is penetrated in the up-down direction to form a top installation opening and a bottom installation opening; the back shell is arranged at the bottom installation opening, and a second sealing ring is arranged between the back shell and the main shell; an annular installation plate is arranged at the inner wall of the top installation opening, double-sided adhesive tape and tempered glass are sequentially arranged on the top of the annular installation plate in the up direction, and a main control PCB is arranged at the bottom of the annular installation plate; a display screen is arranged at the top of the main control PCB and on the inner side of the annular installation plate; and foam is arranged between the display screen and the tempered glass.

[0010] Preferably, a watchband assembly is arranged on the main shell, the watchband assembly comprises a watchband, a first rotating block and a second rotating block which are rotatably arranged at opposite ends of the main shell respectively; one end of the watchband is arranged on the first rotating block, and the other end of the watchband is used for penetrating through the through hole of the second rotating block and being attached to the watchband; and a vibration motor electrically connected with the main control PCB is arranged at the inner wall of the back shell.

[0011] Preferably, a loudspeaker is arranged at the inner side wall of the main shell, and a sound outlet hole is arranged at the position corresponding to the loudspeaker of the main shell; a silica gel sleeve is arranged at the opening of the loudspeaker; and a first waterproof and breathable film is arranged between the loudspeaker and the sound outlet hole.

[0012] A first air hole is arranged at the side wall of the main shell, a fixed cover is arranged at the position corresponding to the first air hole of the main shell, a second air hole is arranged on the fixed cover and in communication with the first air hole, and a second waterproof and breathable film is arranged between the fixed cover and the main shell.

[0013] Preferably, a power management PCB is arranged at the inner side wall of the main shell, and a power supply is arranged at the inner wall of the back shell; the power management PCB is electrically connected with the main control PCB and the power supply.

[0014] A magnetic charging connector electrically connected with the power management PCB is arranged at the side wall of the main shell; a third sealing ring is arranged between the magnetic charging connector and the main shell; and a protective cover is arranged at the magnetic charging connector.

[0015] The side wall of the main shell is further provided with a light guide column for displaying the power charging condition, and the light guide column is provided with a fourth sealing ring between the light guide column and the main shell.

[0016] The power management PCB is provided with a tactile button for cooperating with the inner end surface of the button rod.

[0017] Preferably, the inner wall of the back shell is further provided with an FPC antenna; the inner side wall of the main shell is further provided with a ceramic antenna; and the FPC antenna and the ceramic antenna are electrically connected with the main control PCB.

[0018] Preferably, the corners of the watch case are all provided with rounded corners.

[0019] Preferably, the watch case is made of PC and ABS composite materials.

[0020] Beneficial effects are:

[0021] 1. In the parachute safety auxiliary watch, the button rod is limited in the axial direction by the snap spring, the button rod can be quickly installed and disassembled without using special tools, the operation of the operator is facilitated, the work efficiency is improved, the volume of the snap spring is small, the thickness is thin, the internal space of the watch case is not additionally occupied, the design and arrangement of other parts in the watch case are facilitated. Further, the spring provides the button cap and the button rod with a rebounding force, ensures the accuracy and stability of the movement of the button cap and the button rod, absorbs part of the impact force in the movement process of the button cap and the button rod, thereby reducing vibration and noise, and provides the user with a better use experience; the spring reduces the wear and impact in the movement process of the button cap and the button rod, and helps to prolong the service life of the button structure.

[0022] 2. The first sealing ring arranged between the installation cylinder and the button rod can have a waterproof and dustproof effect, and ensures the safety of the watch.

[0023] 3. The limiting protrusion and the limiting groove not only guide the movement of the button cap and the button rod, but also avoid the friction force generated by the relative rotation of the button cap and the accommodating groove and the friction force generated by the relative rotation of the button rod and the through hole.

[0024] 4. Since the vibration motor is arranged at the inner wall of the back shell, it is more fitted to the arm, can effectively increase the vibration intensity, and makes the wearer experience stronger.

[0025] 5. By arranging the first air hole, the second air hole and the second waterproof air permeable film, the inside of the watch and the outside atmosphere are communicated, and then the air pressure sensor in the main shell can accurately detect the atmospheric pressure, and has a waterproof function. BRIEF DESCRIPTION OF DRAWINGS

[0026] The above and other objects, features and advantages of the present embodiments will become more apparent from the following detailed description read in conjunction with the accompanying drawings. In the drawings, several embodiments of the present application are illustrated by way of example and not limitation. Like reference numerals are used to refer to corresponding or like parts throughout the several views of the drawings, and:

[0027] Figure 1 It is a perspective view of the paratrooper safety auxiliary watch of the present embodiment;

[0028] Figure 2 It is an exploded view of the paratrooper safety auxiliary watch of the present embodiment;

[0029] Figure 3 It is a side view of the watch band removal assembly of the present embodiment;

[0030] Figure 4 It is Figure 3 the sectional view in direction A-A;

[0031] Figure 5 It is Figure 4 the enlarged view of the portion A;

[0032] Figure 6 It is a perspective view of the button structure of the present embodiment;

[0033] Figure 7 It is a perspective view of the watch band removal assembly and the main housing of the present embodiment;

[0034] Figure 8 It is a perspective view of the rear housing, the power supply and the vibration motor of the present embodiment.

[0035] Explanation of reference numerals:

[0036] 1, watch case; 11, main housing; 111, accommodating groove; 112, mounting cylinder; 113, annular mounting plate; 12, rear housing; 2, button structure; 21, button rod; 22, button cap; 23, spring; 24, snap spring; 25, spring washer; 26, first sealing ring; 27, limiting groove; 30, second sealing ring; 31, double-sided adhesive tape; 32, tempered glass; 33, main control PCB; 34, display screen; 35, foam; 36, vibration motor; 37, loudspeaker; 38, sound outlet hole; 39, silica gel sleeve; 40, first waterproof and breathable film; 41, fixing cover; 42, second breathable hole; 43, second waterproof and breathable film; 44, power management PCB; 45, power supply; 46, magnetic charging connector; 47, third sealing ring; 48, protective cover; 49, light guide column; 50, fourth sealing ring; 51, light touch button; 52, ceramic antenna; 6, watch band assembly; 61, watch band; 62, second rotating block. DETAILED DESCRIPTION

[0037] The embodiments of the present application are described in detail below, examples of which are shown in the drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0038] As shown in the drawings, the present application provides a kind of watch for parachuting safety auxiliary, including watch case 1 and the button structure 2 of being located at the side of watch case 1.Button structure 2 includes button rod 21, button cap 22 for being located at the outer end of button rod 21 and spring 23 and snap spring 24.Button rod 21 and button cap 22 can be integrally formed, can also be detachable connection, for example, threaded connection.Button cap 22 is moved in the containing groove 111 along the axis of through hole, and button rod 21 passes through through hole.Button rod 21 has the abutting inner end for abutting the touch button 51 in watch case 1.Spring 23 is sleeved on button rod 21, and the two ends of spring 23 are respectively in contact with the outer side of button cap 22 and the bottom wall of containing groove 111.Catch spring 24 is clamped in the annular clamping groove of inner end of button rod 21, to stop cooperation with the inner side of the bottom wall of containing groove 111. Figures 1 to 8 The watch for parachuting safety auxiliary of the present application, when installing button structure 2, first, spring 23 is sleeved on button rod 21, second, button rod 21 is aligned with through hole and is inserted therein, at this time, button cap 22 is also inserted into containing groove 111, and spring 23 is compressed and deformed under the pressing action of button cap 22, then catch spring 24 is clamped in the annular clamping groove of inner end of button rod 21, so that catch spring 24 and the inner side of the bottom wall of containing groove 111 stop cooperation, complete the installation of button structure 2.When disassembling button structure 2, first, catch spring 24 is taken out from the annular clamping groove on button rod 21, the axial limitation of button rod 21 is removed, then button cap 22 is pulled outwards, button rod 21 and spring 23 are taken out, and the disassembly of button structure 2 is completed.When using button structure 2, press button cap 22, spring 23 is compressed, and at the same time, button cap 22 synchronously drives button rod 21 to move inward, to realize the corresponding function of watch.After pressing, spring 23 restores elastic deformation, drives button cap 22 and button rod 21 to move outward, until reset.

[0039]

[0040] ​The utility model discloses a jump from an airplane safety auxiliary watch, through snap spring 24 realizes the limit of button rod 21 axial, can realize quick installation and disassembly, need not use special tool, convenient for operator operation, improve work efficiency, and the volume of snap spring 24 is smaller, and the thickness is thinner, will not extra occupy the internal space of watch case 1, facilitate the design and arrangement of other parts in watch case 1. Further, the spring 23 is provided, the button cap 22 and button rod 21 provide the resilience, ensure the accuracy and stability of button cap 22 and button rod 21 movement;Spring 23 can also absorb part of the impact force in the movement of button cap 22 and button rod 21, thereby reducing vibration and noise, providing better user experience;Spring 23 reduces the wear and impact in the movement of button cap 22 and button rod 21, which helps to prolong the service life of button structure 2.

[0041] As Figures 4 to 6 The bottom wall of the accommodating groove 111 is provided with a mounting cylinder 112 at the outer side thereof, and the button rod 21 penetrates the mounting cylinder 112. The inner wall of the mounting cylinder 112 is fixedly provided with a first sealing ring 26, and the button rod 21 is in sliding sealing cooperation with the inner wall of the first sealing ring 26. Specifically, the mounting cylinder 112 is arranged at the outer side of the bottom wall of the accommodating groove 111 and is larger than the diameter of the penetrating hole. The inner end of the spring 23 is further provided with a spring washer 25, the spring washer 25 abuts against the outer end surface of the first sealing ring 26, and the inner end surface of the first sealing ring 26 abuts against the bottom wall of the accommodating groove 111. The outer peripheral surface of the first sealing ring 26 is in sealing connection with the inner wall of the mounting cylinder 112. In the present embodiment, the first sealing ring 26 arranged between the mounting cylinder 112 and the button rod 21 can have a waterproof and dustproof effect, thereby ensuring the safety of the watch in use. For example, the first sealing ring 26 is an O-shaped sealing ring.

[0042] As Figure 6 The edge of the outer side of the bottom wall of the accommodating groove 111 is provided with a limiting protrusion, and the corresponding position of the button cap 22 is provided with a limiting groove 27 matched with the limiting protrusion, so as to limit the rotation of the button cap 22 around the axis thereof. In the present embodiment, by arranging the limiting protrusion and the limiting groove 27, the button cap 22 cannot rotate, but can only move along the axis thereof, that is, the button rod 21 can also only move along the axis thereof. Such an arrangement not only plays a guiding role in the movement of the button cap 22 and the button rod 21, but also avoids the friction force generated by the relative rotation of the button cap 22 and the accommodating groove 111 and the friction force generated by the relative rotation of the button rod 21 and the penetrating hole.

[0043] In some alternative embodiments, the edge of the outer side of the bottom wall of the accommodating groove 111 is provided with a limiting groove 27, and the corresponding position of the button cap 22 is provided with a limiting protrusion matched with the limiting groove 27.

[0044] As Figure 3 And Figure 4As shown, the watch case 1 includes a main shell 11 and a rear shell 12. The main shell 11 is penetrated in the up-down direction to form a top mounting opening and a bottom mounting opening. The rear shell 12 is arranged at the bottom mounting opening, and a second sealing ring 30 is arranged between the rear shell 12 and the main shell 11. The rear shell 12 and the main shell 11 can be connected by screws for easy disassembly and maintenance. The second sealing ring 30 can play a waterproof and dustproof role to ensure the safety of the watch use.

[0045] As shown in Figure 2 and Figure 4 , an annular mounting plate 113 is arranged at the inner wall of the top mounting opening, and a double-sided adhesive tape 31 and a tempered glass 32 are sequentially arranged on the top of the annular mounting plate 113. A main control PCB 33 is arranged at the bottom of the annular mounting plate 113. A display screen 34 is arranged at the top of the main control PCB 33 and on the inner side of the annular mounting plate 113. A foam 35 is arranged between the display screen 34 and the tempered glass 32.

[0046] In this embodiment, the tempered glass 32 is fixedly attached to the annular mounting plate 113 by the double-sided adhesive tape 31, so that the fixing is more firm, and the tempered glass 32 can play a good protection role on the display screen 34. Four circular limiting columns are arranged at the bottom of the annular mounting plate 113, and the main control PCB 33 is fixedly connected to the four circular limiting columns by screws. The main control PCB 33 is located at the central position of the cavity of the main shell 11. The foam 35 is attached around the top of the display screen 34 to play a role of moisture-proof and dust-proof.

[0047] As shown in Figure 1 and Figure 2 , a watchband assembly 6 is arranged on the main shell 11, and the watchband assembly 6 includes a watchband 61 and first and second rotating blocks 62 rotatably arranged at opposite ends of the main shell 11. One end of the watchband 61 is arranged on the first rotating block, and the other end of the watchband 61 is arranged through the through hole of the second rotating block 62 and attached to the watchband 61. By arranging the watchband assembly 6, the watch can be worn on the wrist of the user, thereby facilitating carrying. The watchband 61 is attached and fastened in the form of magic tape, which is more convenient to wear. The material of the watchband 61 is nylon textile cloth, which makes the wearer more comfortable. A vibration motor 36 electrically connected to the main control PCB 33 is arranged at the inner wall of the rear shell 12. A limiting groove for mounting the vibration motor 36 is arranged at the inner wall of the rear shell 12. Since the vibration motor 36 is arranged at the inner wall of the rear shell 12, it is more fitted to the arm, which can effectively increase the vibration intensity and make the wearer experience stronger.

[0048] As shown in Figure 1 , Figure 2 , Figure 4 and Figure 7As shown, the inner side wall of the main shell 11 is provided with a loudspeaker 37, and the main shell 11 is provided with a sound hole 38 corresponding to the position of the loudspeaker 37. The main shell 11 is provided with a mounting cavity for mounting the loudspeaker 37 at the corresponding position. The loudspeaker 37 is provided with a silica gel sleeve 39. A first waterproof and breathable film 40 is arranged between the loudspeaker 37 and the sound hole 38. The sound emitted by the loudspeaker 37 can be transmitted through the sound hole 38, so that the sound is larger, which is convenient for reminding the wearer. The silica gel sleeve 39 and the first waterproof and breathable film 40 can play the role of waterproof and breathable.

[0049] As shown in Figure 2 and Figure 7 , the side wall of the main shell 11 is provided with a first air hole, and the main shell 11 is provided with a fixed cover 41 corresponding to the first air hole, and the fixed cover 41 is provided with a second air hole 42 communicating with the first air hole. For example, the fixed cover 41 and the main shell 11 can be connected by screws, which is convenient for disassembly and maintenance. A second waterproof and breathable film 43 is arranged between the fixed cover 41 and the main shell 11. By arranging the first air hole, the second air hole 42 and the second waterproof and breathable film 43, the inside of the watch and the outside atmosphere are communicated, so that the atmospheric pressure sensor in the main shell 11 can accurately detect the atmospheric pressure, and has the waterproof function.

[0050] As shown in Figure 4 , Figure 7 and Figure 8 , the inner side wall of the main shell 11 is provided with a power management PCB board 44, and the inner wall of the rear shell 12 is provided with a power supply 45. The power management PCB board 44 is electrically connected with the main control PCB board 33 and the power supply 45. The power supply 45 can be a lithium battery. The inner side wall of the main shell 11 is provided with a circular limiting column, and the power management PCB board 44 is arranged on the circular limiting column by screws. The power management PCB board 44 has the functions of charging the power supply 45 and supplying power to the main control PCB board 33.

[0051] As shown in Figures 1 to 3 and Figure 7 , the side wall of the main shell 11 is provided with a magnetic charging connector 46 electrically connected with the power management PCB board 44. A third sealing ring 47 is arranged between the magnetic charging connector 46 and the main shell 11. The magnetic charging connector 46 is provided with a protective cover 48. Because the magnetic charging connector 46 is arranged, magnetic connection can be realized, which can be stable and not fall off, and can be twisted and disassembled at any time, which has the advantages of fashion, convenience, efficiency and safety. The third sealing ring 47 can have the functions of waterproof and dustproof. The protective cover 48 can be arranged at the magnetic charging connector 46 when not charging, which can protect the magnetic charging connector 46.

[0052] As shown in Figure 1 , Figure 2 and Figure 7As shown, the side wall of the main shell 11 is also provided with a light guide column 49 for displaying the charging condition of the power supply 45, and a fourth sealing ring 50 is arranged between the light guide column 49 and the main shell 11. Since the light guide column 49 is arranged, the charging condition can be easily checked. For example, during the charging process, the light guide column 49 emits red light, and after the charging is completed, the light guide column 49 emits green light, which can remind the user to stop charging in time and prevent the power supply 45 from being damaged due to overcharging.

[0053] The power management PCB board 44 is provided with a tactile button 51 for cooperating with the inner end surface of the button rod 21. The button rod 21 moves towards the inside of the watch case 1 under the pressing of the button cap 22, and the inner end of the button rod 21 presses the tactile button 51 to realize the corresponding function of the watch.

[0054] The inner wall of the back shell 12 is also provided with an FPC antenna. The FPC antenna is pasted on the blank and flat part of the inner wall of the back shell 12. The FPC antenna is electrically connected with the main control PCB board 33. The FPC antenna is used for receiving 915Mhz signals. The FPC antenna is a flexible printed circuit antenna made of flexible material. This kind of antenna combines the advantages of flexible circuit and antenna technology, and has the characteristics of lightness, flexibility, bendability, etc., and is suitable for various complex and compact device spaces. The high performance, low cost and easy integration of the FPC antenna can meet the use requirements of the watch.

[0055] As shown in Figure 7 The inner side wall of the main shell 11 is also provided with a ceramic antenna 52. The ceramic antenna 52 is electrically connected with the main control PCB board 33. The ceramic antenna 52 is used for receiving Beidou signals. The ceramic antenna 52 is a miniaturized antenna, which uses a ceramic shell as the material and has the ability of anti-interference, lightning protection and waterproof and dustproof. The frequency range of the ceramic antenna 52 is generally between 902MHz and 928MHz.

[0056] As shown in Figure 1 and Figure 2 The corners of the watch case 1 are all provided with rounded corners, so that the appearance of the watch is round and the wearer wears more comfortably.

[0057] The watch case 1 is made of PC and ABS composite material, so that the watch case 1 has the advantages of high strength, high and low temperature resistance, light weight, etc., and does not interfere with the reception of the antenna signal in the watch case 1.

[0058] According to the above description of the present specification, those skilled in the art can also understand that the terms used such as "upper", "lower", "horizontal", "top", "bottom", "inner", "outer" and the like indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings of the present specification, which are only for the purpose of facilitating the description of the scheme of the present application and simplifying the description, and are not explicitly or implicitly indicated that the devices or elements involved must have the specific orientation, be constructed and operated in a specific orientation, therefore the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as a limitation on the scheme of the present application.

[0059] In addition, in the description of the present specification, the meaning of "a plurality of" is at least two, such as two, three or more, etc., unless otherwise explicitly and specifically limited.

Claims

1. A wristwatch for use in parachuting safety assistance, characterized by, The watch includes a watch case and a button structure arranged at the side of the watch case; a receiving groove and a through hole penetrating the bottom wall of the receiving groove are arranged at the side of the watch case; the button structure includes a button rod, a button cap arranged at the outer end of the button rod, a spring and a catch spring; the button cap is arranged in the receiving groove along the axis of the through hole, the button rod penetrates the through hole, the button rod has an abutting inner end for abutting a touch button in the watch case; the spring is sleeved on the button rod, and the two ends of the spring are respectively abutted against the button cap and the outer side of the bottom wall of the receiving groove; the catch spring is arranged in the annular clamping groove of the inner end of the button rod to abut against the inner side of the bottom wall of the receiving groove.

2. The paracuting safety auxiliary watch according to claim 1, wherein an installation cylinder is arranged at the outer side of the bottom wall of the receiving groove, the button rod penetrates the installation cylinder, a first sealing ring is fixedly arranged on the inner wall of the installation cylinder, and the button rod is in sliding sealing cooperation with the inner wall of the first sealing ring.

3. The paracuting safety auxiliary watch according to claim 1, wherein a limiting protrusion is arranged at the edge of the outer side of the bottom wall of the receiving groove, and a limiting groove matched with the limiting protrusion is arranged at the corresponding position of the button cap, so as to limit the rotation of the button cap around the axis thereof.

4. The paracuting safety auxiliary watch according to claim 1, wherein the watch case includes a main case and a back case; the main case penetrates in the up-down direction to form a top installation opening and a bottom installation opening; the back case is arranged at the bottom installation opening, and a second sealing ring is arranged between the back case and the main case; an annular installation plate is arranged at the inner wall of the top installation opening, a double-sided adhesive tape and a tempered glass are sequentially arranged on the top of the annular installation plate in the up direction, and a main control PCB is arranged at the bottom of the annular installation plate; a display screen is arranged at the top of the main control PCB and on the inner side of the annular installation plate; and foam is arranged between the display screen and the tempered glass.

5. The paracuting safety auxiliary watch according to claim 4, wherein a watchband assembly is arranged on the main case, the watchband assembly includes a watchband, a first rotating block and a second rotating block which are rotatably arranged at the opposite ends of the main case respectively; one end of the watchband is arranged on the first rotating block, and the other end of the watchband is used for penetrating the through hole of the second rotating block and being adhered to the watchband; and a vibration motor electrically connected with the main control PCB is arranged at the inner wall of the back case.

6. The paracuting safety auxiliary watch according to claim 4, wherein a loudspeaker is arranged at the inner side wall of the main case, the main case is provided with a sound outlet hole corresponding to the position of the loudspeaker; a silica gel sleeve is arranged at the opening of the loudspeaker; and a first waterproof and breathable film is arranged between the loudspeaker and the sound outlet hole; a first air hole is arranged at the side wall of the main case, a fixed cover corresponding to the first air hole is arranged on the main case, the fixed cover is provided with a second air hole in communication with the first air hole; and a second waterproof and breathable film is arranged between the fixed cover and the main case.

7. The paracuting safety auxiliary watch according to claim 4, characterized in that, the inner side wall of the main shell is provided with a power management PCB board, the inner wall of the rear shell is provided with a power supply, and the power management PCB board is electrically connected with the main control PCB board and the power supply; the side wall of the main shell is provided with a magnetic charging connector electrically connected with the power management PCB board; the magnetic charging connector is provided with a third sealing ring between the main shell; and the magnetic charging connector is provided with a protective cover; the side wall of the main shell is also provided with a light guide column for displaying the charging condition of the power supply; and the light guide column is provided with a fourth sealing ring between the main shell; the power management PCB board is provided with a touch button for cooperating with the inner end face of the button rod.

8. The paracuting safety auxiliary watch according to claim 4, characterized in that, the inner wall of the rear shell is also provided with an FPC antenna; the inner side wall of the main shell is also provided with a ceramic antenna; and the FPC antenna and the ceramic antenna are electrically connected with the main control PCB board.

9. The paracuting safety auxiliary watch according to claim 1, characterized in that, the edges of the watch shell are all provided with rounded corners.

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