Anti-falling screw lock structure and electronic thermometer

Abstract

The utility model discloses an anti-falling screw lock structure and an electronic thermometer. The anti-falling screw lock structure is applied to the electronic thermometer and comprises a shell, a fixing piece, an adhesive layer and a screw lock piece. The shell is a part of an outer shell of the electronic thermometer, the shell is provided with a through hole and an inner shrinkage groove surrounding the through hole, the fixing piece is arranged in the inner shrinkage groove and fixed in the inner shrinkage groove through the adhesive layer, the fixing piece is provided with a lock hole axially communicated with the through hole, and the lock hole is provided with a lock hole. And the screw locking piece penetrates through the lock hole and the through hole to screw and lock a temperature sensing device of the electronic thermometer, so that the temperature sensing device is connected to the shell.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic clinical thermometer, especially to the screw lock structure of electronic clinical thermometer. BACKGROUND

[0002] Electronic clinical thermometer is disclosed in US8827552B2, US8657492B2 and US8400316B2, which has a pen-shaped structure with a long strip appearance. It usually includes a shell and a temperature sensing device connected to the shell. The shell and the temperature sensing device are usually combined and fixed together by screwing.

[0003] In order to avoid screw loosening, a washer is usually arranged between the screw and the shell to use the axial force generated by the washer after being pressed to assist in fixing the screw. The washer has a perforation for the screw to pass through, so that the washer is temporarily fixed on the shaft of the screw. When the screw is screwed into the shell and the temperature sensing device, the washer is pressed and the shell and the temperature sensing device are fixed together.

[0004] Since the diameter of the perforation is larger than the diameter of the shaft, the washer will have an axial offset relative to the screw. When the axial offset is too large, the screw cannot evenly press the washer, resulting in uneven force, which increases the risk of screw loosening. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to disclose a screw lock structure to avoid screw loosening, so as to reduce the risk of using electronic clinical thermometer for infants.

[0006] To achieve the above purpose, the utility model discloses an electronic clinical thermometer and a screw lock structure for preventing loosening. The screw lock structure includes a shell, a fixing piece, an adhesive layer and a screw lock piece. The shell is part of the shell of the electronic clinical thermometer. The shell has an outer side and an inner side, and the inner side faces away from the outer side. The shell also has a perforation and a recessed groove. The perforation passes through the outer side and the inner side to communicate the outer side and the inner side. The recessed groove is arranged on the outer side and surrounds the perforation, that is, the perforation is arranged in the recessed groove.

[0007] The fixing piece is matched with the recessed groove and arranged in the recessed groove. The contour of the fixing piece can be slightly smaller than the recessed groove and fixed by using the adhesive layer. In more detail, the adhesive layer is arranged between the fixing piece and the recessed groove to use the adhesive force of the adhesive layer to adhere the fixing piece to the recessed groove. The fixing piece has a lock hole which is arranged to be axially communicated with the perforation.

[0008] The screw-locking component has a head, a shaft, and a threaded structure. The shaft extends from the head, and the threaded structure is formed on the shaft. The screw-locking component passes through the locking hole and the through hole from one side of the outer surface, with the head located on one side of the outer surface and the threaded structure located on one side of the inner surface. Thus, the anti-loosening screw-locking structure is provided on the housing. The shaft with the threaded structure also passes through a temperature sensing device of the electronic thermometer, connecting the temperature sensing device to the housing.

[0009] This utility model discloses an anti-loosening screw lock structure, comprising:

[0010] A housing having an outer side, an inner side opposite to the outer side, a through hole passing through the outer side and the inner side, and an inner groove disposed on the outer side and surrounding the through hole.

[0011] A fixing piece with a shape matching the inner groove is disposed in the inner groove and has a locking hole that is axially connected to the through hole;

[0012] An adhesive layer is disposed between the fixing piece and the inner groove to fix the fixing piece within the inner groove; and

[0013] A screw lock has a head, a shaft extending from the head, and a threaded structure formed on the shaft. The screw lock passes through the lock hole and the through hole from the outer side, with the head located on one side of the outer side and the threaded structure located on one side of the inner side.

[0014] In one embodiment of the present invention, the fixing piece further includes an annular plate and a notch formed in the annular plate.

[0015] In one embodiment of this utility model, the minimum width of the notch is not greater than the minimum outer diameter of the rod body of the screw.

[0016] In one embodiment of the present invention, the annular plate has a first end face adjacent to the notch and a second end face opposite to the first end face, the first end face and the second end face being parallel to each other.

[0017] In one embodiment of this utility model, the maximum inner diameter of either the lock hole or the through hole is smaller than the maximum outer diameter of the rod body.

[0018] In one embodiment of this utility model, the threaded structure and the rod body each have a major diameter and a minor diameter, and the diameter of the locking hole is between the major diameter and the minor diameter.

[0019] In one embodiment of the present invention, the annular plate has an inner ring side surface and a protrusion structure formed on the inner ring side surface.

[0020] In one embodiment of this utility model, an electronic thermometer includes:

[0021] A shell;

[0022] A temperature sensing device connected to the housing; and

[0023] The aforementioned anti-loosening screw locking structure is disposed on the outer casing. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the electronic thermometer of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of this utility model;

[0026] Figure 3 This is an exploded view of the structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the fixing plate structure in the first embodiment;

[0028] Figure 5 This is a schematic diagram of the fixing plate structure in the second embodiment;

[0029] Figure 6 This is a schematic diagram of the fixing plate structure in the third embodiment;

[0030] Figure 7 This is a schematic diagram of the fixing plate structure in the fourth embodiment.

[0031] [Symbol Explanation]

[0032] 1: Electronic thermometer

[0033] 2: Anti-loosening screw locking structure

[0034] 10: Shell

[0035] 10A: Outer casing

[0036] 11: Outer side

[0037] 12: Inner side

[0038] 13: Perforation

[0039] 14: Inner groove

[0040] 20, 20A, 20B, 20C: Fixing plates

[0041] 201: Annular plate

[0042] 2011: Inner Ring Road Side

[0043] 2012: Protruding Structure

[0044] 202: Gap

[0045] 203: First end face

[0046] 204: Second end face

[0047] 21: Keyhole

[0048] 30: Adhesive layer

[0049] 40: Screw locking parts

[0050] 41: Head

[0051] 42: Shaft

[0052] 43: Threaded Construction

[0053] 50: Temperature sensing device

[0054] 51: Screw hole Detailed Implementation

[0055] The terminology used herein is for the purpose of illustrating particular embodiments only and is not intended to limit the invention. Unless the context otherwise indicates, the singular forms “a” and “the” used herein may also include the plural forms.

[0056] See Figure 1 This utility model discloses an electronic thermometer 1 and an anti-detachment screw locking structure 2 used in the electronic thermometer 1. The electronic thermometer 1 includes a housing 10A and a temperature sensing device 50. The temperature sensing device 50 is connected to the housing 10A, and the anti-detachment screw locking structure 2 is disposed on the housing 10A and is used to connect the temperature sensing device 50.

[0057] See Figure 2 and Figure 3 The diagram shows a structural schematic and exploded view according to an embodiment of the present invention. The anti-loosening screw-lock structure 2 includes a housing 10, a fixing piece 20, an adhesive layer 30, and a screw-locking member 40. The housing 10 is part of the outer shell 10A of the electronic thermometer 1. The housing 10 is shell-shaped and is usually made of plastic injection molding. The housing 10 has an outer side 11, an inner side 12, a through hole 13, and an inner groove 14. The outer side 11 and the inner side 12 are the two sides of the shell. The through hole 13 penetrates the shell, that is, it passes through the outer side 11 and the inner side 12. The inner groove 14 is disposed on the outer side 11 and surrounds the through hole 13. The inner groove 14 surrounds the through hole 13 to form a space communicating with the through hole 13.

[0058] The setting space is for placing the fixing piece 20. The fixing piece 20 has a contour that matches the shape of the retracted groove 14 and can be set in the retracted groove 14. The fixing piece 20 has a locking hole 21 which is set to be axially connected to the through hole 13. In order to fix the fixing piece 20 in the retracted groove 14, an adhesive layer 30 can be coated on the surface of the retracted groove 14 in contact with the fixing piece 20. The adhesive can be, for example, epoxy resin glue, polyurethane glue, silicone glue, acrylic glue, etc. The adhesive layer 30 provided between the fixing piece 20 and the retracted groove 14 can fix the fixing piece 20 in the retracted groove 14.

[0059] The locking member 40 can be a screw, which has a head 41, a rod body 42 and a thread structure 43. The rod body 42 extends from the head 41, and the thread structure 43 is formed on a partial area of the rod body 42, usually extending from the area far from the head 41 towards the head 41. In use, the locking member 40 passes through the locking hole 21 and the through hole 13 from the outer side surface 11 of the housing 10. In this way of use, the head 41 is located on one side of the outer side surface 11, and the thread structure 43 is located on one side of the inner side surface 12. Thus, the rod body 42 with the thread structure 43 can continue to be screwed into a screw hole 51 of the temperature sensing device 50 on one side of the inner side surface 12, so that the temperature sensing device 50 is connected to the housing 10, that is, connected to the outer shell 10A.

[0060] In addition, in order to reduce the possibility of the locking member 40 falling off, the locking hole 21 and the through hole 13 can be selected individually or both, and the maximum inner diameter is made smaller than the maximum outer diameter of the rod body 42. In this way, when the locking member 40 passes through the locking hole 21 and the through hole 13, the locking hole 21 and / or the through hole 13 can tighten and press the rod body 42, reducing the possibility of the locking member 40 falling off.

[0061] In addition, the thread structure 43 and the rod body 42 each have a major diameter and a minor diameter, and the diameter of the locking hole 21 is between the major diameter and the minor diameter. In this design, the thread structure 43 can easily squeeze the locking hole 21 to deform, and the thread structure 43 can smoothly pass through the locking hole 21.

[0062] See Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, the fixing pieces 20, 20A, 20B, 20C of the first to fourth embodiments are respectively disclosed, which have different structural forms. The fixing piece 20 of the first embodiment includes an annular plate body 201, and the locking hole 21 is directly formed in the middle.

[0063] In addition to the annular plate 201, the fixing piece 20A of the second embodiment also includes a notch 202. The notch 202 is formed on the annular plate 201. The presence of the notch 202 allows the annular plate 201 to have the elasticity to open outward, that is, the width of the lock hole 21 can be elastically opened and enlarged.

[0064] The width of the notch 202 is generally set to be no greater than the outer diameter of the rod body 42 of the screw 40. This ensures that the annular plate 201 does not detach from the notch 202 when it is fitted onto the rod body 42. When the width of the notch 202 varies depending on the radial radius of the annular plate 201, the minimum width of the notch 202 must not exceed the minimum outer diameter of the rod body 42. Preferably, the annular plate 201 has a first end face 203 and a second end face 204 adjacent to the notch 202. The first end face 203 faces the second end face 204, and the first end face 203 and the second end face 204 are parallel to each other.

[0065] The fixing piece 20B of the third embodiment includes the annular plate 201, which has an inner annular side surface 2011 and a protruding structure 2012 formed on the inner annular side surface 2011. Since the locking hole 21 is located at the center of the inner annular side surface 2011, the protruding structure 2012 protrudes into the locking hole 21. Under this design, when the screw 40 passes through the locking hole 21, the protruding structure 2012 can help to restrain and tighten the rod body 42.

[0066] The fixing piece 20C of the fourth embodiment includes the annular plate 201 and the notch 202, and the annular plate 201 has the inner ring side 2011 and the protrusion structure 2012.

[0067] As can be seen from the above, the screw locking component of this utility model passes through both the locking hole of the fixing plate and the through hole of the housing. The fixing plate is used as a washer when the screw locking component is screwed in, which can prevent the screw locking component from loosening. The fixing plate is bonded and fixed in the inner groove, which can greatly reduce the risk of falling off and meet the use requirements of preventing falling off.

Claims

1. A pull-off prevention screw locking structure characterized by comprising: The anti-loosening screw lock structure comprises: a housing having an outer side, an inner side opposite to the outer side, a through hole penetrating the outer side and the inner side, and a recessed groove arranged on the outer side and surrounding the through hole; a fixing plate matching the recessed groove, arranged in the recessed groove and having a locking hole axially communicating with the through hole; an adhesive layer arranged between the fixing plate and the recessed groove to fix the fixing plate in the recessed groove; and a screw member having a head, a shank extending from the head, and a thread structure formed on the shank, the screw member penetrating the locking hole and the through hole from the outer side, and the head being located on one side of the outer side and the thread structure being located on one side of the inner side.

2. The anti -pullout screw lock structure of claim 1, wherein The fixing plate further comprises an annular plate body and a notch formed on the annular plate body.

3. The anti -pullout screw lock structure of claim 2, wherein A minimum width of the notch is not greater than a minimum outer diameter of the shank of the screw member.

4. The anti -pullout screw lock structure of claim 2, wherein The annular plate body has a first end face adjacent to the notch and a second end face opposite to the first end face, and the first end face and the second end face are parallel to each other.

5. The anti -pullout screw lock structure of claim 1, wherein A maximum inner diameter of either the locking hole or the through hole is less than a maximum outer diameter of the shank.

6. The anti -pullout screw lock structure of claim 2, wherein The thread structure and the shank respectively have a large diameter and a small diameter, and a diameter of the locking hole is between the large diameter and the small diameter.

7. The anti -pullout screw lock structure of claim 2, wherein The annular plate body has an inner annular side and a protruding structure formed on the inner annular side.

8. An electronic thermometer characterized by comprising: The anti-loosening screw lock structure comprises: a housing; a temperature sensing device connected to the housing; and the anti-loosening screw lock structure according to any one of claims 1 to 7 is arranged on the housing.

Images