CN215834452U

CN215834452U - Rebounding type key structure and handheld temperature measuring equipment

Info

Publication number: CN215834452U
Application number: CN202122467898.1U
Authority: CN
Inventors: 李平
Original assignee: Iray Technology Co Ltd
Current assignee: Iray Technology Co Ltd
Priority date: 2021-10-13
Filing date: 2021-10-13
Publication date: 2022-02-15
Anticipated expiration: 2031-10-13

Abstract

The utility model relates to a rebounding type key structure and handheld temperature measuring equipment, wherein the key structure comprises a trigger key, a supporting frame, a fixed shell and an operating switch, a mounting groove for accommodating the trigger key is formed in the fixed shell, the operating switch is mounted in the mounting groove, the supporting frame is arranged between the trigger key and the operating switch and comprises an action arm and an elastic arm which are arranged in an included angle, one end of the action arm is in contact with the trigger key, the other end of the action arm is in contact with the operating switch, one end of the elastic arm is connected with the action arm, and the other end of the elastic arm is mounted on the fixed shell. The support frame is arranged between the trigger button and the operating switch, and the action arm of the support frame is utilized to transmit pressing force, so that the operating switch is switched on, and after external force is removed, the elastic arm is restored to an initial state under restoring force, the number of parts is reduced, the assembly is convenient, the assembly efficiency is improved, the cost is low, and the competitiveness in the same market is increased.

Description

Rebounding type key structure and handheld temperature measuring equipment

Technical Field

The utility model relates to the technical field of temperature measuring equipment, in particular to a rebounding type key structure and handheld temperature measuring equipment.

Background

The trigger button a1 of the handheld thermometric product on the market at present generally comprises a torsion spring 2, a rotating shaft 3 and a fixing plate 5 for structural fixation, and the rotating pressing and rebounding of the trigger button a1 are realized by means of the deformation and elasticity of the torsion spring 2, as shown in fig. 8, 9 and 10.

The specific assembly is briefly described as follows:

(1) the torsion spring 2 is placed at a position corresponding to the trigger button A1, and then the rotating shaft 3 passes through the rotating shaft hole 1a and the torsion spring body shaft hole 2a so as to fix the rotating shaft 3 and the torsion spring 2 on the trigger button 1;

(2) and placing the semi-finished product of the trigger key assembled with the torsion spring 2 and the rotating shaft 3 into the corresponding guide groove 4a of the fixed shell 4, and inserting the fixed plate 5 into the corresponding slot 4b to complete the assembly of the whole trigger key.

Wherein, trigger button A1 drives the rotatory deformation of torsional spring 2 through the rotation of rotation axis 3 when external force is pressed and realizes pushing down of trigger button A1 and the operating force of trigger button A1 is felt, and trigger button A1 releases the resilience of torsion realization trigger button through the rotatory deformation of torsional spring 2 when removing external force trigger button A1.

In the assembling process, because the structure needs to manually install the torsion spring 2 at the corresponding position of the trigger button A1, and then the rotating shaft 3 passes through the rotating shaft holes 1a at two positions of the trigger button A1, the assembling is complex and various, the rotating shaft 3 is not easy to pass through the second rotating shaft hole 1a of the trigger button 1 during the installation, the assembling efficiency is reduced linearly, the number of structural parts is large, the cost is relatively high, and the market competitiveness of the product is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a rebounding type key structure and handheld temperature measuring equipment, aiming at the technical problems of complex structure and difficult assembly of the existing handheld temperature measuring equipment.

The technical scheme for solving the technical problems is as follows: the utility model provides a formula button structure can kick back, includes trigger button, support frame, set casing and operating switch, be equipped with on the set casing and hold the mounting groove of trigger button, install operating switch in the mounting groove, be equipped with the support frame between trigger button and the operating switch, the support frame is including action arm and the elastic arm that is the contained angle setting, the one end of action arm with the trigger button contacts, the other end with operating switch contacts, the one end and the action arm of elastic arm are connected, and the other end is installed on the set casing.

On the basis of the technical scheme, in order to achieve the convenience of use and the stability of equipment, the utility model can also make the following improvements on the technical scheme:

furthermore, one end of the elastic arm, which is far away from the action arm, is provided with a supporting part, the supporting part comprises two parallel supporting plates and two fixing plates for connecting the supporting plates, the outer side walls of the two supporting plates are provided with limiting grooves, the fixing shell is provided with limiting ribs, and during installation, the limiting grooves are sleeved on the limiting ribs.

Further, the upper end face of backup pad is equipped with rotates groove one, be equipped with on the set casing and rotate groove two, it forms the accommodation hole to rotate groove one and rotate groove two cooperation, be equipped with the axis of rotation on the trigger button, the axis of rotation rotates to be installed in the accommodation hole.

Further, the included angle between the action arm and the elastic arm is 30-50 degrees.

Further, the support frame is of an integrated structure.

Furthermore, the support frame is made of plastic materials.

Further, the support frame is made of polyformaldehyde POM or nylon PA.

Furthermore, the trigger button comprises an arc-shaped pressing part, the lower end of the pressing part is provided with a limiting structure, and the limiting structure is inserted into the fixed shell.

Furthermore, the rotating shafts are two, the two rotating shafts are respectively located on two sides of the pressing portion, and the limiting structures are two parallel limiting shafts.

The utility model has the beneficial effects that: according to the utility model, the support frame is arranged between the trigger button and the operating switch, and the action arm of the support frame is utilized to transfer pressing force, so that the operating switch is switched on, and after external force is removed, the operating switch is restored to an initial state under the restoring force of the elastic arm, the number of parts is reduced, the structure is simple, the assembly is convenient, and the assembly efficiency is improved; the plastic property of the plastic material is combined with the structure of the support frame, so that normal key pressing and rebounding of the trigger key are realized, the structure is compact, the cost is low, and the competitiveness in the similar market is enhanced.

The utility model also relates to handheld temperature measuring equipment which comprises the rebounding type key structure.

The utility model has the advantages that: through will kick-back formula button structural mounting on handheld temperature measurement equipment, make handheld temperature measurement equipment's part quantity less, installation, convenient to carry have improved this handheld temperature measurement equipment's assembly efficiency, reduce the processing cost, have improved the competitiveness in the market.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a schematic structural view of the supporting frame;

FIG. 3 is another angle view of the supporting frame

FIG. 4 is a schematic view of a trigger button of the present invention;

FIG. 5 is a schematic view of another angle of the trigger button of the present invention;

FIG. 6 is a schematic view of a stationary housing;

FIG. 7 is an enlarged view of a portion of FIG. 6 at A;

FIG. 8 is a schematic view of a prior art trigger button A;

FIG. 9 is a prior art schematic view of a trigger button A mounted in a stationary housing;

fig. 10 is a schematic view of a prior art mounting fixing plate.

The reference numbers are recorded as follows: 1. a trigger button A; 1a, a rotating shaft hole; 2. a torsion spring; 2a, a shaft hole of the torsion spring body; 3. a rotating shaft; 4. fixing the shell; 4a, a guide groove; 4b, a slot; 5. a fixing plate;

10. a trigger button; 10a, a rotating shaft; 10b, a limiting structure; 10c, a pressing part; 20. a support frame; 20a, a resilient arm; 20b, a first rotating groove; 20c, a limiting groove; 20d, an action arm; 20e, a support portion; 30. a stationary case; 30a, a limiting rib; 30b, a second rotating groove; 40. the switch is operated.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1 to 7, the present invention provides a resilient key structure, which includes a trigger key 10, a supporting frame 20, a fixing shell 30 and an operating switch 40, wherein the fixing shell 30 is provided with an installation groove for accommodating the trigger key 10, the shape of the installation groove is adapted to the shape of the trigger key 10, the installation groove is further provided with the operating switch 40, the supporting frame 20 is arranged between the trigger key 10 and the operating switch 40, the supporting frame 20 includes an action arm 20d and an elastic arm 20a arranged at an included angle, the included angle between the action arm 20d and the elastic arm 20a can be 30 to 50 degrees, which can ensure normal transmission of pressing force, and at the same time, under the same external force, the included angle structure can reduce the displacement of the action arm 20d, thereby reducing the overall volume of the key structure, facilitating carrying, one end of the action arm 20d is in contact with the trigger key 10, the other end is in contact with the operating switch 40, one end of the elastic arm 20a is connected with the actuating arm 20d, and the other end is mounted on the fixed case 30. The size of the action arm 20d is larger than that of the elastic arm 20a, so that the pressing force of the trigger button 10 is transmitted to the operation switch 40, the operation switch 40 is ensured to be smoothly conducted, and the service life of the support frame 20 is prolonged.

In an alternative embodiment, the angle between the actuating arm 20d and the resilient arm 20a is acute.

In a preferred embodiment, the angle between the actuating arm 20d and the resilient arm 20a is 45 °.

Referring to fig. 2 and 3, a support portion 20e is disposed at one end of the elastic arm 20a away from the actuating arm 20d, and a fillet is disposed at a joint of the elastic arm 20a and the support portion 20e, so that strength of the joint can be ensured and service life can be improved, the support portion 20e includes two parallel support plates and a fixing plate connecting the two support plates, a limiting groove 20c is disposed on outer sidewalls of the two support plates, a limiting rib 30a is disposed on the fixing shell 30, and the limiting groove 20c and the limiting rib 30a are designed in a matching manner, so that when mounting, the limiting groove 20c can be inserted on the limiting rib 30 a.

The up end of backup pad is equipped with rotates groove one 20b, be equipped with on the set casing 30 and rotate groove two 30b, it forms the accommodation hole to rotate groove one 20b and rotate the cooperation of groove two 30b, be equipped with axis of rotation 10a on the trigger button 10, axis of rotation 10a rotates and installs in the accommodation hole. The first rotating groove 20b and the second rotating groove 30b are semicircular grooves, and circular holes are formed after the first rotating groove and the second rotating groove are matched, so that the smoothness of rotation of the trigger key 10 is guaranteed, and sliding can be avoided. In this embodiment, two limiting grooves 20c are provided, a reinforcing rib is provided between the two limiting grooves 20c, and the first rotating groove 20b is provided on the support plate at the reinforcing rib, so that the contact area between the rotating shaft 10a and the first rotating groove 20b is increased, and the support strength of the rotating shaft 10a is ensured.

The material of support frame 20 is the plastic material, support frame 20 formula structure as an organic whole. The support frame 20 can be processed by a mold, so that the processing cost can be reduced, and the support strength and the better restoring force of the support frame 20 can be ensured.

In a preferred embodiment, the material of the supporting frame 20 is polyoxymethylene POM or nylon PA. The material has good mechanical strength and excellent electrical insulation performance, so that the support strength of the support frame 20 can be guaranteed, the service life of the support frame 20 is prolonged, the operation switch 40 is insulated, electric shock hazard is avoided when a hand presses the trigger key 10, and the use safety is guaranteed.

Referring to fig. 4 and 5, the trigger key 10 includes an arc-shaped pressing portion 10c, the arc-shaped pressing portion 10c facilitates a human hand to apply a pressing force, the upper end of the pressing portion 10c is smaller than the mounting groove, and the lower end of the pressing portion 10c is larger than the mounting groove, so as to prevent the trigger key 10 from sliding out of the mounting groove. The contact position of the action arm 20d and the pressing part 10c is provided with an inclined surface which is matched with the arc shape of the pressing part 10c so as to ensure that the force of the trigger key 10 is transmitted to the operating switch 40, the lower end of the pressing part 10c is provided with a rotating shaft 10a and a limiting structure 10b, the rotating shaft 10a is rotatably installed in the accommodating hole, and the limiting structure 10b is inserted on the fixed shell 30. When the trigger button 10 is pressed, the trigger button 10 can rotate around the rotating shaft 10a, when the trigger button 10 is pressed to a certain position, the limiting structure 10b prevents the trigger button 10 from continuously moving downwards, damage to the operating switch 40 due to overvoltage is avoided, and the service life of the operating switch 40 is ensured.

The axis of rotation 10a is equipped with two, two the axis of rotation 10a is located respectively press the both sides of splenium 10c to guarantee trigger button 10 pivoted stability, avoid taking place the skew, limit structure 10b is the spacing axle of two parallels, and spacing axle plays direction and spacing effect to trigger button 10, guarantees that trigger button 10 can normally reciprocate.

The assembly process of the utility model is as follows:

firstly, the rotating shaft 10a of the trigger key 10 is arranged on the second rotating groove 30b of the fixed shell 30, and the pressing part 10c of the trigger key 10 extends out of the mounting groove on the fixed shell 30, so that the force is conveniently applied to the trigger key 10 by human hands;

then, from one side of the opening of the fixed shell 30, the limiting groove 20c of the support frame 20 is sleeved on the limiting rib 30a of the fixed shell 30, and the support frame 20 moves along the limiting rib 30a until the first rotating groove 20b on the support frame 20 moves to the second rotating groove 30b, and forms an accommodating hole for fusing the rotating shaft 10a by matching with the second rotating groove 30 b;

finally, the operation switch 40 is mounted on the fixed case 30, and the operation arm 20d of the support 20 is brought into contact with the trigger point of the operation switch 40, thereby completing the assembly. The utility model has fewer integral parts, is convenient to assemble and improves the assembly efficiency.

The working process of the utility model is as follows:

when the trigger button 10 is pressed by external force, as shown in fig. 1, the trigger button 10 rotates and displaces downwards around the rotating shaft 10a, at this time, the external force on the trigger button 10 acts on the supporting frame 20 synchronously, the elastic arm 20a deforms when the supporting frame 20 is acted by the external force, and drives the action arm 20d to move downwards, and when the action arm 20d moves to a certain position, the action switch 40 is triggered to be switched on, so as to realize the switching-on action of the action switch 40. At this time, if the trigger button 10 is continuously acted by external force, the trigger button 10 continuously moves down, and the limit structure 10b on the trigger button 10 prevents the trigger button 10 from continuously moving down, so as to prevent the operating switch 40 from being damaged due to overvoltage, and ensure the service life of the operating switch 40.

When the external force is removed, because the elastic arm 20a of the supporting frame 20 has generated plastic deformation, the elastic arm 20a generating plastic deformation can reversely deform and recover to the original state, and the trigger button 10 can be synchronously driven when the elastic arm 20a reversely recovers to the original state, so that the trigger button 10 upwards rotates by taking the rotating shaft 10a as the rotating center, the trigger button 10 stops rotating when the trigger button 10 rotates to the preset position on the fixed shell 30, at this time, the elastic arm 20a recovers to the original state to complete the reset action of the trigger button 10, and the trigger button 10 completes the whole pressing and rebounding actions.

The novel handheld temperature measuring equipment that still includes of this use, but this handheld temperature measuring equipment includes above-mentioned resilience formula button structure. But rebound formula mounting structure installs on handheld temperature measurement equipment, handheld temperature measurement equipment can be for handheld infrared temperature measurement equipment, and application range is extensive, convenient to carry.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a formula of can kick-backing button structure, its characterized in that, includes trigger button, support frame, set casing and operating switch, be equipped with on the set casing and hold the mounting groove of trigger button, operating switch still installs in the mounting groove, be equipped with the support frame between trigger button and the operating switch, the support frame is including action arm and the elastic arm that is the contained angle setting, the one end of action arm with the trigger button contacts, the other end with operating switch contacts, the one end and the action arm of elastic arm are connected, and the other end is installed on the set casing.

2. The resilient key structure of claim 1, wherein the end of the elastic arm away from the actuating arm is provided with a support portion, the support portion comprises two parallel support plates and a fixing plate connecting the two support plates, the outer side walls of the two support plates are provided with limiting grooves, the fixing shell is provided with limiting ribs, and the limiting grooves are sleeved on the limiting ribs during installation.

3. The resilient key structure of claim 2, wherein the supporting plate has a first rotating groove on an upper end surface thereof, the stationary housing has a second rotating groove thereon, the first rotating groove and the second rotating groove cooperate to form a receiving hole, the trigger key has a rotating shaft thereon, and the rotating shaft is rotatably mounted in the receiving hole.

4. The resilient key structure of claim 1, wherein the angle between the actuating arm and the resilient arm is between 30 ° and 50 °.

5. The resilient key structure of claim 1, wherein the support frame is a one-piece structure.

6. The resilient key structure of claim 5, wherein the supporting frame is made of plastic material.

7. The resilient key structure of claim 6, wherein the material of the supporting frame is polyoxymethylene POM or nylon PA.

8. The resilient key structure of claim 3, wherein the trigger key comprises an arc-shaped pressing portion, a limiting structure is arranged at the lower end of the pressing portion, and the limiting structure is inserted into the fixed shell.

9. The resilient key structure of claim 8, wherein there are two of the rotation shafts, the two rotation shafts are respectively located at two sides of the pressing portion, and the limiting structures are two parallel limiting shafts.

10. A hand-held thermometric apparatus comprising the resilient button structure of any one of claims 1 to 9.