CN115692096A - Ball switch - Google Patents

Abstract

A ball switch includes an insulating housing, a first terminal, a second terminal, and a conductive ball. The first terminal includes the landing face, and certainly landing face upwards extends and the ring inclined plane of flaring, the ring inclined plane forms the slope contained angle between 10 degrees to 85 degrees with the baseline. The second terminal comprises an inner end part and two outer end parts which are communicated with the inner end part. The insulating housing, the first terminal and the inner end piece define a cavity for accommodating the conductive ball. The conductive ball is in a conductive position and simultaneously contacts the ring inclined surface and the inner end piece to enable the first terminal and the outer end piece to be conductive, and the conductive ball is in a non-conductive position and is separated from one of the ring inclined surface and the inner end piece to enable the first terminal and the outer end piece not to be conductive. Therefore, the effect of high sensitivity and difficult bead clamping is achieved.

Description

Ball switch

Technical Field

The invention relates to a switch, in particular to a ball switch.

Background

Referring to fig. 1, a ball switch 9, such as that disclosed in taiwan patent No. 476445U, includes a conductive housing 91, a conductive block 92, and a ball 93, wherein the conductive housing 91 has an inner surface 911 defining a chamber 94 opened downward, an outer surface 912 opposite to the inner surface 911, an open end 913 connecting the inner surface 911 and the outer surface 912, a closed end 914 opposite to the open end 913, a protrusion 915 connected to the inner surface 911 and adjacent to the closed end 914, and a first terminal portion 916 connected to the outer surface 912 and adjacent to the closed end 914. The conductive block 92 has a body 921 extending into the housing 94, a second terminal portion 922 connected to the body 921 and adjacent to the open end 913, and a tapered ring surface 923 extending downward from a top side of the body 921, wherein the ring surface 923 defines a groove 95 for the ball 93 to be disposed. When the conductive housing 91 is tilted to a predetermined angle, the balls 93 roll and contact the ring surface 923 and the protrusions 915 simultaneously, so that the first terminal portion 916 and the second terminal portion 922 are in an indirectly conductive state.

However, when the ball switch 9 is tilted to a position greater than the predetermined angle, the ball 93 remains clamped between the protrusion 915 and the ring surface 923, and is in a conducting state, so the ball switch 9 is easy to clamp the ball, and can only meet the conducting requirement when the ball switch is tilted to the predetermined angle.

Disclosure of Invention

The invention aims to provide a ball switch which can be in a conducting state in a set inclination range and is not easy to clamp balls.

The ball switch of the invention comprises an insulating shell, a first terminal, a second terminal and a conductive ball. The insulating housing includes a lower housing wall surrounding an axis extending up and down, an upper housing wall positioned above the lower housing wall and surrounding the axis, and a top wall positioned above the upper housing wall and intersecting the axis, the lower housing wall having a first inner wall surface surrounding the axis and a first outer wall surface opposite the first inner wall surface, the upper housing wall having a second inner wall surface surrounding the axis and a second outer wall surface opposite the second inner wall surface.

The first terminal is arranged on the first inner wall surface of the lower shell wall, and comprises a platform surface intersected with the axis, and a ring inclined surface which surrounds the axis and extends upwards from the platform surface along the extending direction of the axis and is gradually expanded, wherein in any cross section cut along the extending direction of the axis, the ring inclined surface and a base line orthogonal to the axis form an inclined included angle, and the inclined included angle is 15-80 degrees.

The second terminal comprises an inner end piece, two outer end pieces and two conductive pieces, wherein the inner end piece surrounds the axis and is arranged on the second inner wall surface of the upper shell wall, the two outer end pieces are arranged on the second outer wall surface of the upper shell wall at intervals, the two conductive pieces penetrate from the second inner wall surface to the second outer wall surface and are respectively connected with the outer end pieces and the inner end piece, and a cavity is defined by the lower shell wall, the upper shell wall, the top wall, the first terminal and the inner end pieces of the second terminal in a matched mode.

The conductive ball is located in the cavity and is movable between a conductive position and a non-conductive position, wherein in the conductive position, the conductive ball simultaneously contacts the ring slope and the inner end piece and conducts the first terminal and the inner end piece to conduct the first terminal with the outer end piece, and in the non-conductive position, the conductive ball is separated from one of the ring slope and the inner end piece to make the first terminal and the inner end piece non-conductive to make the first terminal and the outer end piece non-conductive.

In the ball switch of the present invention, the inner end member is cylindrical around the axis, and the inner diameter of the inner end member is larger than the diameter of the conductive ball.

In the ball switch of the invention, the platform surface is substantially circular and the diameter of the conductive ball is smaller than that of the platform surface.

According to the ball switch, the inclined included angle is 75-85 degrees.

In the ball switch of the invention, the platform surface is substantially circular and the diameter of the conductive ball is larger than that of the platform surface.

In the ball switch, the inclined included angle is between 10 and 20 degrees.

In the ball switch, the first outer wall surface of the lower shell wall is provided with two first concave arc parts which are oppositely arranged and are in concave arc shapes, the second outer wall surface of the upper shell wall is provided with two second concave arc parts which are oppositely arranged and are in concave arc shapes, each first concave arc part is matched with the corresponding second concave arc part to define a groove extending along the axial extension direction, and the outer end part is in a bent arc sheet shape and is respectively accommodated in the groove.

The invention has the beneficial effects that: the ball switch can be in a conducting state in a set inclined range, and has the advantages of high sensitivity and difficulty in clamping balls.

Drawings

Fig. 1 is a sectional view of a combination of a ball switch of taiwan new patent No. 476445U;

FIG. 2 is a perspective assembly view of a first embodiment of the ball switch of the present invention;

FIG. 3 is an exploded perspective view of the first embodiment;

FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. 2 illustrating the conductive ball of the first embodiment in a non-conductive position;

FIG. 5 is a cross-sectional view similar to FIG. 4, illustrating the ball switch tilted 80 degrees and the conductive ball in the on position;

FIG. 6 is a cross-sectional view similar to FIG. 5, illustrating the ball switch tilted greater than 90 degrees and the conductive ball in the non-conductive position;

FIG. 7 is a schematic cross-sectional view of a second embodiment of the ball switch of the present invention illustrating the conductive ball in the non-conductive position;

FIG. 8 is a cross-sectional view similar to FIG. 7, illustrating the ball switch tilted 15 degrees and the conductive ball in the on position; and

FIG. 9 is a cross-sectional view similar to FIG. 8, illustrating the ball switch tilted greater than 90 degrees and the conductive ball in the non-conductive position.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Before the present invention is described in detail, it should be noted that like elements are represented by like reference numerals throughout the following description.

Referring to fig. 2, 3 and 4, the ball switch according to the first embodiment of the present invention includes an insulating housing 1, a first terminal 2, a second terminal 3 and a conductive ball 4.

The insulating housing 1 includes a lower housing wall 11 surrounding an axis L1 extending up and down, an upper housing wall 12 positioned above the lower housing wall 11 and surrounding the axis L1, and a top wall 13 positioned above the upper housing wall 12 and intersecting the axis L1.

The lower housing wall 11 is open at the top and bottom and has a first inner wall surface 111 surrounding the axis L1 and a first outer wall surface 112 opposite to the first inner wall surface 111, and the first outer wall surface 112 has two first concave arc portions 113 oppositely arranged in a concave arc shape.

The upper housing wall 12 is open at the top and bottom and has a second inner wall surface 121 surrounding the axis L1, a second outer wall surface 122 opposite to the second inner wall surface 121, a top side surface 123 connecting the second inner wall surface 121 and the second outer wall surface 122 and abutting against the top wall 13, and two wire slots 124 located at the top side surface 123 and extending from the second inner wall surface 121 to the second outer wall surface 122 respectively. The second outer wall surface 122 of the upper housing wall 12 has two second concave arc portions 125 oppositely arranged in a concave arc shape, and the wire grooves 124 are located on two opposite sides of the axis L1 and respectively adjacent to the second concave arc portions 125. The lower shell wall 11, the upper shell wall 12 and the top wall 13 are juxtaposed along the extension direction of the axis L1, and each first concave arc portion 113 and the corresponding second concave arc portion 125 cooperate to define a groove 14 extending along the extension direction of the axis L1.

In this embodiment, the lower housing wall 11, the upper housing wall 12 and the top wall 13 are Printed Circuit Boards (PCBs), and in other variations of this embodiment, the lower housing wall 11, the upper housing wall 12 and the top wall 13 may be made of other types of insulating materials.

The first terminal 2 is cup-shaped and disposed in the first inner wall surface 111 of the lower housing wall 11, and includes a flat surface 21 circularly intersecting with the axis L1, a ring inclined surface 22 surrounding the axis L1 and extending upward from the periphery of the flat surface 21 along the extending direction of the axis L1, a first outer peripheral surface 23 opposite to the ring inclined surface 22 and abutting against the first inner wall surface 111, an open end 24 connecting the ring inclined surface 22 and the first outer peripheral surface 23, and a closed end 25 opposite to the open end 24 and connecting the first outer peripheral surface 23, wherein the flat surface 21 is adjacent to the closed end 25.

In any cross section taken along the extending direction of the axis L1, the ring inclined surface 22 and a base line L2 orthogonal to the axis L1 form an inclined included angle θ 1, and the inclined included angle θ 1 is between 10 degrees and 85 degrees. In one embodiment, the included inclination angle θ 1 is between 75 degrees and 85 degrees. In this embodiment, the inclined angle θ 1 is 80 degrees, and the diameter of the conductive ball 4 is smaller than that of the platform surface 21.

The second terminal 3 includes an inner end member 31 which is cylindrical around the axis L1 and is pressed against the second inner wall surface 121 in a tight fit manner, two outer end members 32 which are bent arc sheet-shaped and are arranged on the second outer wall surface 122 at intervals, and two conductive members 33 which penetrate from the second inner wall surface 121 to the second outer wall surface 122 and are separably connected with the outer end members 32 and the inner end member 31, respectively.

The inner end part 31 has an upper opening end 311 surrounding the axis L1 and abutting against the top wall 13, and a lower opening end 312 opposite to the upper opening end 311 and defining a gap with the open end 24 of the first terminal 2, the inner diameter of the inner end part 31 is larger than the diameter of the conductive ball 4, the outer end parts 32 are shaped to fit the grooves 14 and are respectively accommodated in the grooves 14, and the conductive members 33 are respectively inserted in the wire grooves 124.

In this embodiment, the conductive member 33 is a copper foil of a PCB.

The lower housing wall 11, the upper housing wall 12, the top wall 13, the first terminal 2, and the inner end piece 31 of the second terminal 3 cooperate to define a chamber 5 in which the conductive ball 4 is rollably received.

Referring to fig. 4 to 6, the conductive ball 4 is movable between a conductive position (see fig. 5) and a non-conductive position (see fig. 4 and 6), in which the conductive ball 4 simultaneously contacts the ring inclined surface 22 and the inner end member 31 and conducts the first terminal 2 and the inner end member 31, so that the first terminal 2 is indirectly conductive with the outer end member 32, and in which the conductive ball 4 is separated from one of the ring inclined surface 22 and the inner end member 31, so that the first terminal 2 and the inner end member 31 are not conductive, so that the first terminal 2 is not conductive with the outer end member 32.

Referring to fig. 4, when the ball switch is horizontally disposed, the conductive ball 4 is located at the non-conductive position, and the conductive ball 4 abuts against the platform surface 21 and the ring inclined surface 22 and does not contact the inner terminal 31, so that the first terminal 2 and the inner terminal 31 are not conductive, and the first terminal 2 and the outer terminal 32 are not conductive.

Referring to fig. 5 to 6, when the ball switch is tilted to 80 degrees, the conductive ball 4 rolls to the conducting position, the conductive ball 4 simultaneously contacts the ring inclined surface 22 and the inner end part 31 to conduct the first terminal 2 and the inner end part 31, and the conductive member 33 indirectly conducts the first terminal 2 and the outer end part 32. When the ball switch is tilted to more than 90 degrees, the conductive ball 4 rolls toward the top wall 13 to disengage from the ring slope 22 and moves to the non-conductive position, so that the first terminal 2 and the inner end part 31 are not conductive, and the first terminal 2 and the outer end part 32 are not conductive.

From the above description, the advantages of the present invention can be summarized as follows:

1. when the ball switch is tilted at an angle greater than or equal to 80 degrees and less than 90 degrees, the conductive ball 4 may contact the ring slope 22 of the first terminal 2 and the inner terminal 31 at the same time and be located at the conducting position, and when the ball switch is tilted at an angle less than 80 degrees, the conductive ball 4 may be separated from the inner terminal 31 and fall on the ring slope 22 and the platform surface 21 of the first terminal 2, and when the ball switch is tilted at an angle greater than 90 degrees, the conductive ball 4 may smoothly roll toward the top wall 13 to be separated from the ring slope 22 of the first terminal 2, so that the ball switch may be located within a selected tilting range, so that the conductive ball 4 is located at the conducting position, and has advantages of high sensitivity and difficulty in ball clamping.

2. When the ball switch is tilted to the conducting ball 4 at the conducting position, the first terminal 2 can be conducted with the outer terminal 32 at the same time, and the outer terminal 32 is located at two opposite sides of the insulating housing 1 relative to the axis L1, so as to increase the application range.

Referring to fig. 7 to 9, the ball switch according to the second embodiment of the present invention includes the insulating housing 1, a first terminal 2', the second terminal 3, and the conductive ball 4. The second embodiment differs from the first embodiment in that: the first terminal 2 'is cup-shaped and disposed in the first inner wall surface 111, and includes a platform surface 21' intersecting the axis L1 in a circular shape, a ring inclined surface 22 'extending upward from the periphery of the platform surface 21' in the extending direction of the axis L1 around the axis L1, a first outer peripheral surface 23 'opposite to the ring inclined surface 22' and abutting against the first inner wall surface 111, an open end 24 'connecting the ring inclined surface 22' and the first outer peripheral surface 23', and a closed end 25' opposite to the open end 24 'and connecting the first outer peripheral surface 23'.

The ring slope 22' has a slope section 221 extending upward and diverging along the extending direction of the axis L1, and a straight section 222 extending upward from the slope section 221 along the extending direction of the axis L1, and the open end 24' connects the straight section 222 and the first outer peripheral surface 23'.

The inclined section 221 of the first terminal 2 'forms an inclined included angle θ 2 with the base line L2, the inclined included angle θ 2 ranges from 10 degrees to 20 degrees, and the platform surface 21' is adjacent to the open end 24 and has a diameter smaller than that of the conductive ball 4. In the second embodiment, the inclined angle θ 2 is 15 degrees.

When the ball switch is tilted by an angle greater than or equal to 15 degrees and less than 90 degrees, the conductive ball 4 rolls to the conducting position, the conductive ball 4 simultaneously contacts the ring inclined surface 22' and the inner end part 31 to conduct the first terminal 2' and the inner end part 31, and the conductive member 33 conducts the first terminal 2' and the outer end part 32. When the ball switch is tilted to more than 90 degrees, the conductive ball 4 rolls toward the top wall 13 to disengage from the ring slope 22' and is located at the non-conductive position, so that the first terminal 2' and the inner end member 31 are not conductive, and the first terminal 2' and the outer end member 32 are not conductive

When the ball switch is tilted at an angle of 15 to 90 degrees, the conductive ball 4 is located at the conducting position, and therefore, the ball switch of the second embodiment has the advantages that the conductive ball 4 is located at the conducting position within the selected tilting range, the sensitivity is high, and the ball is not easily clamped, as in the first embodiment.

The above description is only an example of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made according to the claims and the content of the specification of the present invention are still within the scope of the present invention.

Claims (7)

1. A ball switch, characterized in that: comprises the following steps:

an insulating housing including a lower housing wall surrounding an axis extending up and down, an upper housing wall positioned above the lower housing wall and surrounding the axis, and a top wall positioned above the upper housing wall and intersecting the axis, the lower housing wall having a first inner wall surface surrounding the axis and a first outer wall surface opposite the first inner wall surface, the upper housing wall having a second inner wall surface surrounding the axis and a second outer wall surface opposite the second inner wall surface;

the first terminal is arranged on the first inner wall surface of the lower shell wall, and comprises a platform surface intersected with the axis, and a ring inclined surface which surrounds the axis and extends upwards from the platform surface along the extending direction of the axis and is gradually expanded, and in any section cut along the extending direction of the axis, the ring inclined surface and a base line orthogonal to the axis form an inclined included angle, and the inclined included angle is between 10 degrees and 85 degrees;

a second terminal including an inner end piece surrounding the axis and disposed on a second inner wall surface of the upper housing wall, two outer end pieces spaced apart from the second outer wall surface of the upper housing wall, and two conductive pieces penetrating from the second inner wall surface to the second outer wall surface and respectively connecting the outer end pieces and the inner end pieces, wherein the lower housing wall, the upper housing wall, the top wall, the first terminal, and the inner end piece of the second terminal cooperate to define a cavity; and

and a conductive ball disposed in the cavity and movable between a conductive position and a non-conductive position, wherein in the conductive position, the conductive ball simultaneously contacts the ring slope and the inner member to conduct the first terminal and the inner member, thereby conducting the first terminal to the outer member, and in the non-conductive position, the conductive ball is separated from one of the ring slope and the inner member to make the first terminal and the inner member non-conductive, thereby making the first terminal and the outer member non-conductive.

2. The ball switch of claim 1, wherein: the inner end piece is cylindrical around the axis, and the inner diameter of the inner end piece is larger than the diameter of the conductive ball.

3. The ball switch of claim 2, wherein: the platform face is substantially circular and the diameter of the conductive balls is less than the diameter of the platform face.

4. The ball switch of claim 3, wherein: the inclined included angle is 75-85 degrees.

5. The ball switch of claim 2, wherein: the platform face is substantially circular and the diameter of the conductive balls is greater than the diameter of the platform face.

6. The ball switch of claim 5, wherein: the inclined included angle is between 10 and 20 degrees.

7. The ball switch of claim 1, wherein: the first outer wall surface of the lower shell wall is provided with two first concave arc parts which are oppositely arranged and are in concave arc shapes, the second outer wall surface of the upper shell wall is provided with two second concave arc parts which are oppositely arranged and are in concave arc shapes, each first concave arc part is matched with the corresponding second concave arc part to define a groove extending along the axial line extending direction, and the outer end part is in a bent arc sheet shape and is respectively contained in the grooves.

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