CN101887815A

CN101887815A - Switch button and lamp with same

Info

Publication number: CN101887815A
Application number: CN2010102077832A
Authority: CN
Inventors: 周明杰; 刘廷明
Original assignee: Oceans King Lighting Science and Technology Co Ltd; Shenzhen Oceans King Lighting Engineering Co Ltd
Current assignee: Oceans King Lighting Science and Technology Co Ltd; Shenzhen Oceans King Lighting Engineering Co Ltd
Priority date: 2010-06-23
Filing date: 2010-06-23
Publication date: 2010-11-17

Abstract

The invention relates to a switch button and a lamp with the same. The switch button comprises a button cap and a switch, wherein the switch is provided with a button head; the button cap is provided with a pressing part and a cylinder extended from the inside of the pressing part; the cylinder and the button head are coaxial; the periphery at the end of the cylinder is extended along the axial direction of the cylinder so as to form an inner cavity; the inner diameter of the inner cavity is matched with the outer diameter of the button head; and the button head is inserted into the inner cavity. Due to the adoption of the structure, the inner cavity formed at the end of the button cap can play a role of limiting and can limit a parallel movement range of the button cap; the coaxiality of the cylinder of the button cap and the button head when the button cap is pressed by a finger is ensured, so that a switching function of the button can be realized easily when the compression stroke of the button is shorter; and the button cap cannot release from the button head so as to ensure the effectiveness and the reliability of the use of the button.

Description

A kind of switch key and have the light fixture of this switch key

Technical field

The invention belongs to lighting technical field, relate in particular to a kind of switch key and have the light fixture of this switch key.

Background technology

Portable lamp is many based on flashlight, and common flashlight general appearance is less, is fit to hold.The switch key of most of flashlight is usually located at the afterbody of flashlight, and uses the self-locking switch.At the flashlight afterbody, can make the button cap size design must be bigger button design, make the button feel better, also can guarantee the reliability of switching function.Yet, the button design is not easy to the user at the flashlight afterbody carries out switching manipulation.

According to people's traditional habit, switch key is designed near lamp holder the operation when easy to use.This design is subjected to the influence of flashlight profile, and the button cap size can not be done too greatly, and size too conference influences the attractive in appearance of flashlight, and in addition, the too big sealing effectiveness of size also is difficult for reaching.As shown in Figure 1, button cap 1 central authorities have cylinder 11 usually, and its diameter is similar to the diameter of pressing key head 22 on the switch 2, switch 2 belongs to the industry standard part usually, and its top by key head 22 is a dome, pressing keys cap 1, cylinder 11 tops are compressed by key head 22, can realize switching function.Yet, when finger presses button cap 1, if the finger the universal deviation that has slightly of exerting oneself, there is certain angle in the axis of power thrusts and button cap 1, button cap 1 just be easy to from switch 2 by slippage on the key head 22, cause button malfunctioning.

Summary of the invention

The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of button cap that prevents from by the switch key of slippage on the key head and have the light fixture of this switch key.

The present invention realizes like this, a kind of switch key, comprise button cap and switch, switch has by key head, the cylinder that button cap has the press section and extended by the inboard, press section, and cylinder is with to press key head coaxial, the periphery of cylinder end extends axially along cylinder, and the formation inner chamber, the internal diameter of inner chamber is suitable with the external diameter of pressing key head, is inserted in the inner chamber by key head.

Further, the degree of depth of described inner chamber is half of button head height degree.

Further, the press section periphery of described button cap extends annular sidewall in the same way along the bearing of trend of cylinder, protrudes to form two parallel collar flanges on the outside wall surface of sidewall, forms annular groove between two flanges.

Further, described switch is the self-locking switch.

A kind of light fixture has lamp holder, is provided with switch key near lamp holder, switch key comprises button cap and switch, and switch is positioned at lamp interior, and it has by key head, button cap is installed on the lamp outer casing, the cylinder that it has the press section and is extended by the inboard, press section, cylinder makes an exception outside the press section and is exposed to the lamp outer casing surface with to press key head coaxial, the periphery of cylinder end extends axially along cylinder, and the formation inner chamber, the internal diameter of inner chamber is suitable with the external diameter of pressing key head, is inserted in the inner chamber by key head.

Further, the press section periphery of described button cap extends annular sidewall in the same way along the bearing of trend of cylinder, protrudes to form two parallel collar flanges on the outside wall surface of sidewall, is formed for the annular groove that cooperates with lamp outer casing between two flanges.

Further, corresponding position by key head offers through hole on the described lamp outer casing, and the internal diameter of annular groove is less than the aperture of through hole, and button cap is arranged in the through hole inner edge by annular groove.

Further, described switch is the self-locking switch.

Further, described light fixture is a flashlight.

Compared with prior art, the inner chamber that above-mentioned button cap end is provided with can play position-limiting action, it can limit the parallel mobile scope of button cap, can guarantee button cap keeps button cap in by the process of finger presses cylinder and axiality by key head, make button under short compression travel, easily realization switching function, and button cap can not break away from by key head, thereby guarantees validity and the reliability that button uses.

Description of drawings

Fig. 1 is the partial schematic sectional view of existing flashlight.

Fig. 2 is the decomposition texture schematic diagram of switch key in a preferred embodiment of the present invention.

Fig. 3 is the axial cross-sectional schematic of button cap shown in Fig. 2.

Fig. 4 is the partial schematic sectional view of light fixture in a preferred embodiment of the present invention.

Embodiment

In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.

See also Fig. 2 and Fig. 3, it is a preferred embodiment of switch key among the present invention, this switch key comprises that button cap 10 and switch 20 (can be self-marketing formula switches, also can be the switch of other kinds), switch 20 has by key head 202, the cylinder 104 that button cap 10 has press section 102 and extended by 102 inboards, press section, cylinder 104 is with to press key head 202 coaxial, periphery the extending axially of cylinder 104 ends along cylinder 104, and formation cavity 106, the internal diameter of cavity 106 is suitable with the external diameter of pressing key head 202, is inserted in the cavity 106 by key head 202.

The cavity 106 that above-mentioned button cap 10 ends are provided with can play position-limiting action, it can limit button cap 10 parallel mobile scopes, can guarantee that button cap 10 keeps the cylinder 104 of button cap 10 and axiality by key head 202 in by the process of finger presses, make button under short compression travel, easily realize switching function, and button cap 10 can not break away from by key head 202, thereby guarantees validity and reliability that button uses.

In the present embodiment, the degree of depth of cavity 106 is for pressing highly half of key head 202, and such degree of depth can guarantee that button cap 10 does not break away from by key head 202, simultaneously, also can not influence the compression travel of button.

Particularly, described button cap 10 is made by elastomeric material, its press section 102 peripheries extend annular sidewall 107 in the same way along the bearing of trend of cylinder 104, on the outside wall surface of sidewall 107, protrude and form two parallel collar flanges 108, thereby between two flanges 108, form annular groove 109, to cooperate, play water proof and dust proof effect (seeing aftermentioned for details) with light fixture.

Please together consulting Fig. 4, is the partial schematic sectional view of a preferred embodiment of light fixture among the present invention.Light fixture in the present embodiment is a flashlight, and it has lamp holder 30, and switch key is located near the lamp holder 30, and switch 20 is positioned at lamp interior, and fixes by screw and lamp outer casing.Corresponding position by key head 202 offers through hole 302 on the lamp outer casing, and the internal diameter of annular groove 109 is slightly less than the external diameter of through hole 302, and button cap 10 is arranged in through hole 302 inner edges of lamp outer casing by annular groove 109.When button cap 10 was arranged in through hole 302, button cap 10 pressurizeds produced deformation, have filled all spaces of through hole 302, thereby can play water proof and dust proof.After button cap 10 was mounted on the lamp outer casing, its 102 outsides, press section exposed to the lamp outer casing surface, and are inserted in by key head 202 tops in the cavity 106 of cylinder 104.

When using above-mentioned light fixture, even the axis of the application of force direction of finger presses button cap 10 and button cap 10 has certain angle, but under the position-limiting action of cavity 106, can prevent that also button cap 10 is from by slippage on the key head 202.

The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims

1. switch key, comprise button cap and switch, described switch has by key head, the cylinder that described button cap has the press section and extended by inboard, described press section, described cylinder is characterized in that with to press key head coaxial, periphery the extending axially of described cylinder end along cylinder, and the formation inner chamber, the internal diameter of described inner chamber and the described external diameter of pressing key head are suitable, describedly are inserted in the described inner chamber by key head.

2. switch key as claimed in claim 1 is characterized in that, the degree of depth of described inner chamber is half of described button head height degree.

3. switch key as claimed in claim 1 or 2, it is characterized in that, the press section periphery of described button cap extends annular sidewall in the same way along the bearing of trend of cylinder, protrudes to form two parallel collar flanges on the outside wall surface of described sidewall, forms annular groove between two flanges.

4. switch key as claimed in claim 1 is characterized in that, described switch is the self-locking switch.

5. light fixture, has lamp holder, near described lamp holder, be provided with switch key, described switch key comprises button cap and switch, described switch is positioned at lamp interior, it has by key head, described button cap is installed on the lamp outer casing, the cylinder that it has the press section and is extended by inboard, described press section, and described cylinder is with to press key head coaxial, the outside, described press section exposes to the lamp outer casing surface, it is characterized in that the periphery of described cylinder end extends axially along cylinder, and form inner chamber, the internal diameter of described inner chamber and the described external diameter of pressing key head are suitable, describedly are inserted in the described inner chamber by key head.

6. light fixture as claimed in claim 5 is characterized in that, the degree of depth of described inner chamber is half of described button head height degree.

7. as claim 5 or 6 described light fixtures, it is characterized in that, the press section periphery of described button cap extends annular sidewall in the same way along the bearing of trend of cylinder, on the outside wall surface of described sidewall, protrude two parallel collar flanges of formation, between two flanges, be formed for the annular groove that cooperates with described lamp outer casing.

8. light fixture as claimed in claim 7, it is characterized in that, corresponding described position by key head offers through hole on the described lamp outer casing, and the internal diameter of described annular groove is less than the aperture of described through hole, and described button cap is arranged in described through hole inner edge by described annular groove.

9. light fixture as claimed in claim 5, described switch are the self-locking switch.

10. light fixture as claimed in claim 5 is characterized in that, described light fixture is a flashlight.