Electronic thermometer

Abstract

The utility model discloses an electronic thermometer, which comprises a shell and a cover body, a temperature measuring module is arranged in the shell, the front end of the shell is connected with a temperature sensing head, the cover body is inserted into the rear end of the shell along the length direction of the shell, the cover body is connected with the shell through a screw, and a nut of the screw is clamped in a through hole arranged on the cover body, so that the temperature sensing head is connected with the temperature sensing head. The cover body is limited to be separated from the shell along the length direction of the shell; and the phenomenon that the cover body can be pulled out only in a plug-pull mode to expose the battery is avoided, so that the possibility that an unrecognized child touches the button battery is reduced, and the risk that the child mistakenly eats the battery is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of body temperature testing, in particular to an electronic thermometer. Background Art

[0002] Thermometers on the market today can be roughly divided into two types: mercury thermometers and electronic thermometers. These two types of thermometers are used by enthusiasts according to their usage habits. Although the existing mercury thermometer is cheap, it is not only slow in measuring temperature, but also has the risk of breaking when dropped. The broken mercury is also toxic.

[0003] If inhaled, it may lead to mercury poisoning, with symptoms of vomiting and diarrhea. Large amounts of inhalation may even be life-threatening. In comparison, although electronic thermometers are slightly more expensive than mercury thermometers, they can measure temperature quickly in a few seconds and are not easily broken when dropped. Therefore, electronic thermometers have gradually replaced mercury thermometers and become one of the must-have items for household temperature measurement.

[0004] In order to facilitate users to remove the temperature sensing module in the thermometer housing for repair or replace the button battery, existing electronic thermometers generally allow the cover to be installed or removed by simple plugging and unplugging. For children, when they play with the thermometer as a toy, they may easily pull off the cover, take out the button battery and accidentally swallow it. Summary of the invention

[0005] In order to solve the above-mentioned technical problems, the purpose of the utility model is to provide an electronic thermometer, which connects the shell and the cover by screws. After the screws are tightened, the nut of the screw will be stuck in the preset through hole of the cover, which can effectively prevent the cover from detaching from the shell along the length direction of the shell, reducing the possibility of children pulling off the cover and contacting the button battery, thereby further improving safety.

[0006] The technical solution of the utility model is achieved in this way:

[0007] An electronic thermometer comprises a shell and a cover, wherein a temperature measuring module is installed inside the shell, a temperature sensing head is connected to the front end of the shell, the cover is plugged into the rear end of the shell along the length direction of the shell, and the cover and the shell are connected by screws, a mounting hole is provided at the rear end of the shell, a through hole matching the size of a nut on the head of the screw is provided on the cover, the through hole corresponds to the mounting hole position and after the screw is installed in place, the nut of the screw is stuck in the through hole to limit the cover from detaching from the shell along the length direction of the shell.

[0008] Preferably, a notch is provided on the cover body along the direction of plugging and unplugging the cover body so that the through hole is connected to the outside, the screw includes a nut and a screw rod, the width of the notch is greater than or equal to the diameter of the screw rod, and the width of the notch is less than the diameter of the nut; when the screw is turned to completely separate the nut from the through hole of the cover body, the notch of the cover body is opposite to the threaded portion, and the cover body can be pulled out of the shell. Since the utility model uses the nut to stop the toothed portion of the cover body end surrounding the through hole, the notch is provided so that the cover body can be pulled out of the shell without unscrewing the entire screw, as long as the nut leaves the notch and the screw rod is opposite to the notch of the cover body.

[0009] Preferably, the cover includes a cover-like body and a flat convex tooth extending from the opening of the cover-like body toward the shell, and the notch and the through hole for matching the screw are provided in the middle of the convex tooth. Since the wall thickness of the cover is mostly very thin, if the notch and the through hole are directly hollowed out on the cover, even if there is a stopper effect of the screw, the cover is easy to deform and detach from the shell when subjected to a large pulling force; and the protruding design of the convex tooth forms the notch and the through hole in the middle of the convex tooth, detaching from the cover body, in order to transfer the deformation force of the cover to the convex tooth, and then to the recessed groove on the shell surface matching with the convex tooth, and finally to be borne by the shell, and the shell wall thickness and strength are greater than the cover, thereby avoiding deformation of the cover itself and the convex tooth, and avoiding the cover directly detaching from the shell when subjected to a large pulling force.

[0010] Preferably, an annular contraction portion is provided at the rear end of the shell, a sealing ring is installed in the annular contraction portion, the mounting hole and the annular contraction portion are staggered and spaced apart, and the screw is clamped by the convex teeth surrounding the mounting hole, thereby limiting the cover body from detaching from the shell along the length direction of the shell without affecting the sealing effect of the sealing ring.

[0011] Preferably, a recessed groove matching the convex teeth is provided on the rear end surface of the shell, and the thickness of the recessed groove is consistent with the convex teeth. After the cover body is installed in place, the convex teeth are embedded in the recessed groove, making the surface of the electronic thermometer smooth and more beautiful.

[0012] Preferably, a protrusion matching the width of the notch is provided in the middle of the sink. The protrusion matching the notch is provided to fill the depression caused by the notch to avoid uneven outer surface of the electronic thermometer after the cover and the shell are assembled and matched by screws.

[0013] Preferably, the thickness of the convex teeth is the same as that of the nut, so that when the nut is matched with the through hole between the convex teeth, the nut does not protrude or sink, making the outer surface of the electronic thermometer smoother.

[0014] Preferably, the screw is an anti-slip screw connected to the shell, the temperature measurement module includes a bearing seat embedded in the shell and a circuit board installed on the bearing seat, the bearing seat is provided with a threaded hole matched with the screw, and after the screw is installed in place, the screw is threadedly connected to the bearing seat; when the screw is disengaged from the threaded hole, the nut of the screw head leaves the through hole but the screw is always inserted in the mounting hole so as not to be separated from the shell; from top to bottom, from the nut of the screw to the tail of the screw, the screw is matched with the following components in sequence, the nut of the screw is matched with the through hole of the cover body, then the screw rod is first matched with the mounting hole of the shell, then with the preset hole of the circuit board, and finally the screw rod of the screw is screwed into the threaded hole of the bearing seat; when the cover body needs to be removed, the screw rod of the screw is unscrewed out of the threaded hole of the bearing seat, because the diameter of the threaded part of the end of the screw rod that matches the bearing seat is set to be larger than the diameter of the mounting hole provided in the shell, so the threaded part of the end of the screw rod that matches the bearing seat cannot always pass through the mounting hole of the shell, thereby achieving the anti-slip effect of the anti-slip screw, which not only avoids the loss of the screw, but also reduces the risk of children swallowing the screw by mistake.

[0015] Preferably, the mounting hole is a threaded hole, and the screw is threadedly connected to the shell. From top to bottom, from the screw nut to the screw tail, the screw is matched with the following parts in sequence, the screw nut is matched with the through hole of the cover body, and then the screw rod is threadedly connected to the mounting hole of the shell. A avoidance hole is opened at a corresponding position inside the shell, and the screw rod is inserted into it but not connected with it; when the cover body needs to be removed, the screw rod of the screw is screwed out of the mounting hole of the shell until the nut leaves the through hole, which is to apply a force in the opposite direction of the shell to the cover body. The screw rod passes through the gap and the cover body can be pulled off. At this time, the screw is still inserted in the mounting hole of the shell. Since the screw needs to be completely screwed out of the shell before it can be taken out, it not only avoids the loss of the screw, but also reduces the risk of children swallowing the screw by mistake.

[0016] The principle and beneficial effects of the utility model using the above technical solution are:

[0017] 1. The cover is inserted into the rear end of the shell along the length direction of the shell, and the two are also fixed by screws. The nut of the screw is stuck in the through hole of the cover, and the screw rod of the screw is screwed into the bearing seat installed in the shell, so that the cover can be avoided by only plugging and unplugging, and the battery is exposed to the outside, which reduces the possibility of children without knowledge coming into contact with button batteries and reduces the risk of children accidentally swallowing batteries.

[0018] 2. Since the screw is a very small part, it is easy to lose the screw when the user repairs the temperature measuring module or needs to replace the battery and unscrews it. Therefore, the connecting screw of the utility model is configured as an anti-slip screw; no matter whether the anti-slip screw is threadedly connected to the shell or threadedly connected to the bearing seat in the shell, the diameter of the end of the screw is larger than the diameter of the mounting hole on the shell, so the end of the screw can never pass through the mounting hole of the shell, thereby achieving the anti-slip effect of the anti-slip screw, which not only avoids the loss of the screw, but also reduces the risk of children accidentally swallowing the screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 An exploded view of unscrewing the screws and removing the cover of an electronic thermometer;

[0020] Figure 2 is a side view of a full cross-sectional view of an electronic thermometer;

[0021] Figure 3 It is a front view of the electronic thermometer;

[0022] Figure 4 A schematic diagram of the three-dimensional structure of the housing for unscrewing the screws, removing the cover, and taking out the sealing ring;

[0023] Figure 5 is a schematic diagram of the three-dimensional structure of a screw;

[0024] The figures are marked as follows: 1-cover body, 11-cover-shaped body, 101-convex teeth, 102-through holes, 103-notches, 2-shells, 201-annular contraction portions, 202-mounting holes, 203-sunk grooves, 3-screws, 3a-nuts, 3b-screws, 4-sealing rings, 5-supporting seats, 501-threaded holes, 6-circuit boards. DETAILED DESCRIPTION

[0025] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0027] The specific implementation of the utility model is as follows:

[0028] Example 1: Please refer to Figure 1-5, this embodiment proposes an electronic thermometer, which is mainly composed of a shell 2, a cover 1 and a temperature measuring module. The shell 2 is equipped with a temperature measuring module, and a temperature sensing head is connected to the front end. The cover 1 is plugged into the rear end of the shell 2 along the length direction of the shell 2. The innovation of the utility model lies in that the cover 1 and the shell 2 are also connected by screws, and the rear end of the shell 2 is provided with a mounting hole 202. The cover 1 is provided with a through hole 102 whose size matches the nut 3a of the head of the screw 3, and the through hole 102 corresponds to the mounting hole 202 in position; after the screw is installed in place, the nut 3a of the screw 3 is stuck in the through hole 102, which limits the cover 1 from being separated from the shell 2 along the length direction of the shell 2, so that children cannot pull out the cover 1 by applying a force in the opposite direction of the shell 2 to the cover, thereby contacting the button battery.

[0029] Specifically, the above design is implemented as follows: First, Figure 4 The rear end of the shell 2 is provided with an annular contraction portion 201, and a sealing ring 4 is installed in the annular contraction portion 201. The cover body and the shell are fastened together by the sealing ring. This is a common technology for connecting the cover body and the shell on the market.

[0030] On this basis, if Figure 1 As shown, the present invention designs the cover 1 to be composed of two parts: a cover body 11 and a flat protruding tooth 101 extending from the opening of the cover body 11 toward the housing 2 . A through hole 102 and a notch 103 are provided on the protruding tooth 101 . If the through hole 102 and the notch 103 are directly opened on the cover-like body, the through hole 102 and the notch 103 will expose the sealing ring to the outside, affecting the sealing effect; at the same time, since the wall thickness of the cover body 1 is mostly very thin, if the notch 103 and the through hole 102 are directly hollowed out on the cover body 1, even with the stopping effect of the screw 3, the cover body 1 is still easy to deform and easily separate from the shell when subjected to a large pulling force; and the protruding design of the convex tooth forms the notch and the through hole in the middle of the convex tooth, which is separated from the cover body. This is to transmit the deformation force on the cover body to the convex tooth, and then to the recessed groove on the surface of the shell that cooperates with the convex tooth, and finally to the shell. The shell wall thickness and strength are greater than the cover body, thereby avoiding deformation of the cover body itself and the convex tooth, and avoiding the cover body from directly separating from the shell when subjected to a large pulling force.

[0031] In addition, a recessed groove 203 matching the protruding tooth 101 is provided on the rear end surface of the shell 2. After the cover 1 is installed in place, the protruding tooth 101 is embedded in the recessed groove 203. The cooperation between the protruding tooth 101 and the recessed groove 203 on the surface of the shell 2 can play a positioning role.

[0032] To be more specific, the specific structure of the convex tooth 101 is as follows: the convex tooth 101 is provided with a through hole 102 for matching the screw 3 and a notch 103 for connecting the through hole 102 with the outside, the through hole 102 and the notch 103 are arranged in the middle position of the convex tooth 101, the screw 3 includes a nut 3a and a screw rod 3b, the width of the notch 103 is greater than or equal to the diameter of the screw rod 3b, and the width of the notch 103 is less than the diameter of the nut 3a; when the screw 3 is rotated to completely separate the nut 3a from the through hole 102 of the cover body 1, the notch 103 of the cover body 1 is opposite to the threaded portion, and the cover body 1 can be pulled out of the shell body 2; when the cover body 1 is subjected to a pulling force, the force is transmitted from the cover-shaped body 11 to the through hole 102, so that the nut 3a and the tooth portion surrounding the through hole 102 form a confrontation, thereby realizing the clamping connection of the screw 3 to the cover body 1; and the design of the notch 103 is to realize the anti-slip function of the anti-slip screw, so that the user can remove the cover body 1 without completely removing the screw 3.

[0033] In order to make the outer surface of the thermometer feel smoother and without bumps, the thickness of the recessed groove 203 provided on the rear end surface of the shell 2 is consistent with the thickness of the convex tooth 101, and a protrusion is provided in the middle of the recessed groove 203 to match the notch 103, and the length, width and thickness of the protrusion are the same as those of the notch 103; in order to prevent the nut 3a from protruding from the outer surface of the thermometer or forming a depression on the outer surface of the thermometer after the screw is installed, the thickness of the convex tooth 101 is the same as that of the nut 3a, which can prevent the nut 3a of the screw 3 from scratching the user or hooking the thread of foreign objects.

[0034] When installing the cover body 1, first unscrew the screw 3 partially, then plug the cover body 1 and the shell 2 through the positioning effect of the convex tooth 101 and the shell groove 203, and finally use a screwdriver to tighten the screw 3. The effect of the installation is: the nut 3a of the screw 3 is flush with the shell 2 and the cover body 1, neither protruding nor recessed. At this time, when a pulling force is applied to the cover body 1 in the opposite direction of the shell 2, the cover body 1 cannot be removed from the shell 2 due to the confrontation between the screw 3 and the through hole 102 of the cover body 1.

[0035] The anti-slip effect of the anti-slip screw in Example 1 is achieved as follows: Figure 3The screw 3 shown is an anti-slip screw connected to the shell, including a nut 3a and a screw rod 3b, and only the part of the end of the screw rod 3b that cooperates with the bearing seat 5 is provided with a thread; the temperature measuring module includes a bearing seat 5 embedded in the shell and a circuit board 6 installed on the bearing seat, and the bearing seat 5 is provided with a threaded hole 501 that cooperates with the screw 3. After the screw 3 is installed in place, the screw 3 is threadedly connected to the bearing seat 5; when the screw 3 is disengaged from the threaded hole 501, the nut 3a at the screw head leaves the through hole 102, but the screw is always inserted in the mounting hole 202 and does not separate from the shell 2; from top to bottom, from the nut 3a of the screw 3 to the tail of the screw, the screw 3 cooperates with the following parts in sequence, the nut 3a of the screw cooperates with the through hole 102 of the cover body 1, and then the screw 3b first cooperates with the mounting hole 202 of the shell 2, and then The screw rod 3b of the screw is screwed into the threaded hole 501 of the supporting seat 5; it should be mentioned that the circuit board 5 between the shell 2 and the supporting seat 5 is provided with an avoidance hole, and the diameter of the avoidance hole on the circuit board 6 is larger than the diameter of the threaded part at the end of the screw rod that cooperates with the supporting seat 5, which is to provide space for the screw rod 3b to move and prevent the screw 3 from being unable to be screwed out; when the cover body 1 needs to be removed, the screw rod 3b of the screw is screwed out of the threaded hole 501 of the supporting seat 5. In order to achieve the anti-slip effect of the anti-slip screw, the diameter of the threaded part at the end of the screw rod 3b that cooperates with the supporting seat 5 is set to be larger than the diameter of the mounting hole 202 provided in the shell, so the threaded part at the end of the screw rod 3b that cooperates with the supporting seat 5 can never pass through the mounting hole 202 of the shell.

[0036] Embodiment 2: The difference between this embodiment and embodiment 1 is that the mounting hole 202 is a threaded hole, and the screw 3 is threadedly connected to the housing 2. From top to bottom, from the nut 3a of the screw 3 to the tail of the screw 3, the screw 3 is matched with the following parts in sequence, the nut 3a of the screw 3 is matched with the through hole 102 of the cover 1, and then the screw rod 3b is threadedly connected with the mounting hole 202 of the housing 1, and a avoidance hole is opened at a corresponding position inside the housing 2, and the screw rod 3b is inserted therein but not connected with it; when the cover needs to be removed, the screw rod 3b of the screw 3 is screwed out of the mounting hole 202 of the housing 2 until the nut 3a leaves the through hole 102, and at this time, a force is applied to the cover 1 in the opposite direction of the housing 2, and the screw rod 3b passes through the notch 103, and the cover 1 can be pulled off, and at this time the screw 3 is still inserted in the mounting hole 202 of the housing 2. Since the screw 3 needs to be completely screwed out of the housing 2 before it can be taken out, this not only avoids the loss of the screw, but also reduces the risk of children swallowing the screw by mistake.

[0037] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. An electronic thermometer, comprising a housing (2) and a cover (1), wherein a temperature measuring module is installed inside the housing (2), a temperature sensing head is connected to the front end of the housing (2), and the cover (1) is plugged into the rear end of the housing (2) along the length direction of the housing (2), characterized in that: The cover body (1) and the shell (2) are also connected by screws. The shell (2) is provided with a mounting hole (202) at the rear end. The cover body (1) is provided with a through hole (102) whose size matches the nut (3a) of the head of the screw (3). The through hole (102) corresponds to the mounting hole (202) in position. After the screw is installed in place, the nut (3a) of the screw (3) is stuck in the through hole (102) to limit the cover body (1) from being separated from the shell (2) along the length direction of the shell (2).

2. An electronic thermometer according to claim 1, characterized in that: Along the insertion and removal direction of the cover body (1), a notch (103) is provided on the cover body (1) to connect the through hole (102) with the outside, the screw (3) comprises a nut (3a) and a screw rod (3b), the width of the notch (103) is greater than or equal to the diameter of the screw rod (3b), and the width of the notch (103) is less than the diameter of the nut (3a); when the screw (3) is rotated to completely separate the nut (3a) from the through hole (102) of the cover body (1), the notch (103) of the cover body (1) is opposite to the threaded portion, and the cover body (1) can be pulled out and separated from the shell (2).

3. An electronic thermometer according to claim 2, characterized in that: The cover body (1) comprises a cover-shaped body (11) and a flat protruding tooth (101) extending from an opening of the cover-shaped body (11) towards the housing (2), and a notch (103) and a through hole (102) for fitting a screw (3) are provided in the middle of the protruding tooth (101).

4. An electronic thermometer according to claim 1, characterized in that: The rear end of the housing (2) is provided with an annular contraction portion (201), a sealing ring (4) is installed in the annular contraction portion (201), and the mounting hole (202) and the annular contraction portion (201) are staggered and spaced apart.

5. An electronic thermometer according to claim 2, characterized in that: A recessed groove (203) matching the protruding tooth (101) is provided on the rear end surface of the housing (2), and the thickness of the recessed groove (203) is consistent with that of the protruding tooth (101). After the cover body (1) is installed in place, the protruding tooth (101) is embedded in the recessed groove (203).

6. An electronic thermometer according to claim 5, characterized in that: A protrusion matching the width of the notch (103) is provided in the middle of the sink (203).

7. An electronic thermometer according to claim 2, characterized in that: The thickness of the protruding teeth (101) is the same as that of the nut (3a).

8. An electronic thermometer according to claim 1, characterized in that: The screw (3) is an anti-slip screw connected to the housing (2). The temperature measurement module comprises a bearing seat (5) embedded in the housing (2) and a circuit board installed on the bearing seat. The bearing seat is provided with a threaded hole (501) that matches the screw (3). After the screw is installed in place, the screw (3) is threadedly connected to the bearing seat. When the screw (3) is disengaged from the threaded hole (501), the nut (3a) at the head of the screw (3) leaves the through hole, but the screw (3) is always inserted in the installation hole (202) and does not detach from the housing (2).

9. An electronic thermometer according to claim 1, characterized in that: The mounting hole (202) is a threaded hole, and the screw (3) is threadedly connected to the housing (2).

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