JP2003123591A - Head ball detecting switch and its assembling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hard ball detecting switch and its assembling method capable of simplifying the assembling work with the small number of pieces of components, preventing the failure in assembling causing short-circuit of a switching member, and improving the detecting accuracy of a hard ball by improving the vibration resistance and the impact resistance. SOLUTION: The switch member 2 and a terminal member 3 are manufactured as one component of which plus-sides and minus-sides are respectively continued by cut-needed parts 2G, 3G, and the cut-needed parts 2G, 3G are cut after they are assembled in a base member 12 as one component, whereby the number of assembled components can be reduced, and its assembling work can be simplified. The vibration to one of switch pieces 2A side of the switch member 2, of the other switch piece 2B is controlled by a positioning projection 1B2, which prevents the failure in assembling causing short-circuit of a constantly-opened contact, and the undesired closing of the constantly-opened contact by the vibration and the impact, and the vibration resistance and the impact resistance can be improved, as a result, the detecting accuracy of the hard ball is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hard ball detecting switch for counting the number of passing hard balls such as pachinko balls and an assembling method thereof. More specifically, the present invention relates to a hard ball detecting switch having a small number of assembling parts and easy assembling work. The present invention relates to a switch and its assembling method.

[0002]

2. Description of the Related Art A hard-ball detecting switch for detecting the number of hard-balls passing is widely mounted on a pachinko machine or the like, for example, to detect the number of passing pachinko balls. There are two types of this type of hard-ball detection switch: a contact type that operates by contact with a hard ball (see "Hard-Ball Detector" in Japanese Utility Model Publication No. 7-49706) and a non-contact type that operates without contacting a hard ball. It is roughly divided into.

The contact-type hard-ball detecting switch is provided with at least a switch operator having a passive portion facing the inside of a guide hole through which a hard ball passes, and a switch member contacting the operating portion of the switch operator. This hard ball detection switch, when the hard ball passes through the guide hole, when the passive portion of the switch operator contacts the hard ball and is pushed, the actuating portion of the switch operator pushes the switch member, The normally open contact of the switch member is closed to detect passage of a hard ball.

On the other hand, the non-contact type hard sphere detection switch is provided with a magnetic sensor, a photo sensor, etc. arranged around the guide hole of the hard sphere, and when the hard sphere passes through the guide hole, its magnetic change and the amount of light. The passage of the hard sphere is detected by the change, and the detection signal is output.

[0005]

By the way, the contact-type hard-ball detection switch described above does not require expensive parts such as a magnetic sensor and a photosensor as compared with the non-contact-type hard-ball detection switch, which is advantageous in terms of cost. On the other hand, on the other hand, a large number of parts such as a switch actuator, a pair of switch members separated into plus and minus sides, a terminal member, and a connector receiving member are required, and the structure is complicated and the assembly work is troublesome. It costs.

Further, in the contact-type hard-ball detecting switch, the clearance of the contact of the switch member is set to a very small value, so there is a risk that the normally open contact may be short-circuited due to improper assembly of the switch member. Even when the switch member is normally assembled, there is a possibility that the contacts may accidentally open and close due to vibration or shock and malfunction.

Therefore, according to the present invention, the number of parts to be assembled can be reduced to simplify the assembling work, and it is possible to prevent a defective assembly in which the switch member is short-circuited, and also to improve the vibration resistance and shock resistance of the switch member. An object of the present invention is to provide a hard ball detection switch and an assembling method thereof that can be improved and the accuracy of detecting a hard ball can be improved.

[0008]

As means for solving the above problems, a hard ball detection switch according to the present invention comprises a base member having a guide hole through which a hard ball passes and elastic contact through a normally open contact. A switch member in which a pair of possible switch pieces is provided on the mounting piece in a projecting manner, a terminal member in which a pair of connector pins are provided in a projecting manner on the mounting piece that is electrically connected to the mounting piece of the switch member, and the switch member A switch operator that is elastically contacted with one of the switch pieces and faces the inside of the guide hole to be pushed by a hard ball passing through the guide hole to close the normally open contact, and a pair of connector pins of the terminal member. A cover member that forms an enclosing connector holding portion between the base member and the base member, and the cover member covers the switch member, the terminal member, and the switch actuator together with the cover member. A hard-ball detection switch assembled to a base member, wherein the pair of switch pieces and the pair of connector pins, which are electrically connected to each other, are provided on a plus side and a minus side of the attachment piece of the switch member and the attachment piece of the terminal member. It is characterized in that each of them is provided with a required cut portion which is cut after being assembled to the base member so as to be separated.

In the hard-ball detecting switch according to the present invention, for example, a switch member and a terminal member are assembled to a base member,
Cut each required cut part of each mounting piece that overlaps each other,
The switch operation element is attached to the base member, and the cover member is attached to the base member so as to cover them and the assembly work is completed. Here, in the hard-ball detection switch of the present invention, the number of parts to be assembled is such that the base member and the pair of switch pieces on the plus side and the minus side are continuous as one part through the required cut portion of the attachment piece. And a pair of connector pins on the plus side and the minus side are connected through the cut-off portion of the mounting piece to form a terminal member as one component, a switch operator, and a cover member for a total of 5 points. The number of attached parts is reduced and the assembling work is simplified.

In the hard-ball detecting switch of the present invention assembled in this way, when the base member is provided with a positioning protrusion for positioning the other switch piece of the switch member, the switch member is short-circuited at the normally open contact. Bad attachment is prevented. Also, even if a pair of switch pieces vibrate due to vibration or impact, the other switch piece is prevented from vibrating toward the one switch piece side by the positioning protrusion, so the normally open contact of the switch member is not affected by the vibration or impact. The vibration resistance and the shock resistance of the switch member are improved without the need of being closed easily, and the detection accuracy of the hard ball is improved.

On the other hand, in the method for assembling the hard-ball detecting switch according to the present invention, at least the switch member and the terminal member are assembled to the base member and the respective cut portions of the respective mounting pieces which overlap each other are cut off. The cover member is heat-welded and assembled to the base member to which the actuator is assembled.

According to the method for assembling the hard-ball detecting switch of the present invention, a pair of switch pieces on the plus side and the minus side are connected to each other through the required cut portion of the mounting piece as a single component switch member, and the plus side. And a terminal member as one component in which a pair of connector pins on the minus side are connected via a cut portion of a mounting piece and assembled into a base member, and in this state, each cut portion of each mounting piece of the switch member and the terminal member Therefore, the number of parts to be assembled is reduced and the assembling work is simplified as compared with the case where the switch member and the terminal member are previously separated into two parts, the plus side and the minus side, respectively. Further, since the cover member is heat-welded and assembled to the base member, the assembling work is simpler than the case where the cover member is assembled by screwing.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a hard ball detecting switch and an assembling method thereof according to the present invention will be described below with reference to the drawings. In the drawings to be referred to, FIG. 1 is an exploded perspective view showing an entire configuration of a hard ball detection switch according to an embodiment of the present invention, and FIG. 2 is a perspective view of a base member and a switch member shown in FIG.

As shown in FIG. 1, a hard-ball detecting switch according to an embodiment of the present invention includes a base member 1, a switch member 2, a terminal member 3, a switch operator 4, and a cover member 5.
The cover member 5 covers the switch member 2, the terminal member 3 and the switch operator 4 together with the switch member 2, and is mounted on the rear surface side of the base member 1. It has a unique structure.

The base member 1 is made of a resin having high abrasion resistance and stable dimensional accuracy, such as thermoplastic PBT.
(Polybutylene terephthalate) resin is integrally molded into a thick plate having a substantially rectangular outline. A guide hole 1A for allowing a pachinko ball as a hard ball to pass in the direction of the arrow on one side of the base member 1 (on the left front side in FIG. 1).
Are formed. The guide hole 1A may be a round hole or a square hole, but in the present embodiment, it is a modified hole having a square hole as a basic shape, and one side 1A1 parallel to the short side of the base member 1 is formed in the base member 1. It faces the central part.

A housing groove portion 1B for housing a pair of positive and negative switch pieces 2A and 2B of the switch member 2 is provided in the remaining portion on the back side of the base member 1 (on the far right side in FIG. 1). , A mounting base 1C for mounting the mounting piece 3A of the terminal member 3 together with the mounting piece 2C provided on the switch member 2, a mounting recess 1D for mounting the switch operator 4, and the cover member 5, the pedestal portion 1E and the like are integrally formed.

As shown in FIG. 2, the accommodation groove portion 1B is
The base member 1 is arranged at a substantially central portion of the remaining portion. The accommodating groove portion 1B has a wide groove shape extending along the short side direction of the base member 1, and has a bottom portion on one end side thereof, the tip end of one switch piece 2A of the switch member 2 and the other switch piece 2B. A separator 1B1 is formed so as to project between the separator 1B1 and the base end thereof. And this accommodation groove part 1B
On the bottom portion on the other end side, a positioning protrusion 1B2 for positioning the tip portion of the other switch piece 2B is formed. As shown in an enlarged view in FIG. 3, the positioning protrusion 1B2 has a hemispherical tip end portion, and the tip end portion of the other switch piece 2B accommodated in the accommodating groove portion 1B from above is connected to one switch piece. It is configured so that it can be smoothly guided in a direction away from 2A.

As shown in FIG. 1, the mounting base 1C is
It is arranged adjacent to the accommodation groove portion 1B on the side opposite to the guide hole 1A. The mounting base portion 1C corresponds to the accommodation groove portion 1
It has a substantially rectangular trapezoidal shape extending along B, and a through hole 1 for receiving a punch to be described later is provided in a central portion in the longitudinal direction thereof.
C1 is formed. Further, for example, a total of 6 positioning pins 1C2 are provided at each of both end portions on both sides of the through hole 1C1. These positioning pins 1C2
Are provided in two rows on both sides of the through-hole 1C1 so as to project in a row, and are also provided one by one in a row close to the through-hole 1C1. A pair of locking protrusions 1C3 (only one of which is shown) for locking the cover member 5 are provided on the side walls of both ends of the mounting base 1C in the longitudinal direction.

As shown in FIG. 2, the assembly recess 1D is
It is arranged between the accommodation groove portion 1B and the guide hole 1A. The mounting recess 1D has a bearing recess 1D1 having a semicircular cross section that extends along the center of the recess 1D at a position one step lower than the receiving groove 1B, and one side of the guide hole 1A at a position one step higher than the bearing recess 1D1. 1A1 and a notched recessed portion 1D2 opening to 1A1.

The pedestal portion 1E is adjacent to four corners of the remaining portion of the base member 1, that is, two corners adjacent to the accommodating groove portion 1B and surrounding the recessed portion for assembly 1D, and adjacent to the base portion for assembly 1C. It is arranged separately in two corners and four corners. A positioning hole 1E1 for positioning the cover member 5 is formed in each cradle portion 1E in a penetrating state. A holding recess 1F for a connector member (not shown) is formed between the receiving bases 1E at the two corners adjacent to the mounting base 1C.

The switch member 2 has, for example, a thickness of 0.
It is made of a stamped product of a phosphor bronze plated thin plate of about 07 mm, and the pair of switch pieces 2A and 2B are bent from both ends of the mounting piece 2C along one side thereof. The pair of switch pieces 2A and 2B face each other in parallel at a predetermined interval, and are elastically contactable via a normally open contact 2D formed in the longitudinal center of one switch piece 2A. Has been done. This normally open contact 2
The clearance D is set to about 0.10 to 0.15 mm, for example.

The mounting piece 2C of the switch member 2 is a portion to be mounted on the mounting base 1C of the base member 1, and both ends thereof are fitted to the positioning pins 1C2 on the side of the mounting base 1C. Two matching positioning holes 2E are formed in a row. Also, at both ends of this mounting piece 2C,
An elastic contact piece 2F for elastically contacting the attachment piece 3A (see FIG. 1) of the terminal member 3 is provided in a protruding manner. Each elastic contact piece 2
F has a tip portion bent in a stepped manner so as to slightly project from the mounting piece 2C and faces the vicinity of each positioning pin 1C2 on the side of the mounting base portion 1C. A short cut portion 2G for separating the pair of switch pieces 2A and 2B into a plus side and a minus side is formed in a short strip shape at the center of the attachment piece 2C in the longitudinal direction. The required cut portion 2G is arranged so as to overlap the through hole 1C1 of the assembly base portion 1C.

The terminal member 3 has a thickness of 0.5 m, for example.
As shown in FIG. 4, an attachment piece 3A made of a punched product of a brass thin plate of about m and electrically connected to the attachment piece 2C (see FIG. 2) of the switch member 2 and the attachment piece 3A.
It has a pair of connector pins 3B and 3C protruding from A. The mounting piece 3A has a notch 3D at the center of one side facing the holding recess 1F side of the base member 1, and the pair of connector pins 3B and 3C are provided in parallel on both sides thereof. At both ends of the mounting piece 3A, the assembly base 1C is provided.
The positioning hole 3E that fits into the positioning pin 1C2 on the side is 3
It is formed individually. Further, a plurality of small protrusions 3F capable of elastically contacting the mounting pieces 2C (see FIG. 2) of the switch member 2 are formed at both ends of the mounting piece 3A. A short cut portion 3G for separating the pair of connector pins 3B and 3C into a plus side and a minus side is formed in a short strip shape at a central portion in the longitudinal direction of the mounting piece 3A. The required cut portion 3G is arranged so as to overlap with the required cut portion 2G of the switch member 2 and the through hole 1C1 of the assembly base portion 1C.

The switch operator 4 is made of a resin having high fatigue resistance and stable dimensional accuracy, such as thermoplastic P.
It is integrally molded with OM (polyacetal) resin. As shown in FIG. 5, the switch operator 4 has a shaft portion 4A and a lever portion 4B which are orthogonal to each other in a staggered manner. The both ends of the shaft portion 4A are provided with recesses for assembling the base member 1. A ring-shaped rotation fulcrum 4A1 is formed which is attached to and comes into contact with the bearing recess 1D1 (see FIG. 2) in 1D. Further, at one end of the lever portion 4B, the assembling recess 1 is formed.
A passive portion 4B1 facing the inside of one side 1A1 of the guide hole 1A through a cutout recess 1D2 (see FIG. 2) in D is formed in a mountain shape. Then, at the other end of the lever portion 4B,
An actuating portion 4B2 that elastically contacts laterally with one switch piece 2A of the switch member 2 is formed as a curved surface.

The cover member 5 is, for example, a translucent AB.
It is integrally molded with S resin. This cover member 5
As shown in FIG. 6, has a substantially square cover portion 5A that covers the switch member 2, the terminal member 3, and the switch actuator 4. Positioning pins 5B that fit into the positioning holes 1E1 of the receiving portions 1E of the base member 1 are provided on the back surfaces of the four corners of the cover portion 5A, respectively. Further, a positioning pin 5C that can be inserted into the through hole 1C1 of the assembly base 1C of the base member 1 is provided on the back surface of the central portion of the cover 5A.

On the rear surface of the cover portion 5A, the turning fulcrum 4A1 of the switch actuator 4 (see FIG. 2) is provided between the bearing recess 1D1 (see FIG. 2) and the portion facing the mounting recess 1D of the base member 1. 5), a pair of bearing projecting pieces 5D having a semicircular portion that rotatably sandwiches the projecting piece 5D is provided. Further, on the two sides located on both end sides of the mounting base portion 1C of the base member 1, there are provided projecting engaging ear pieces 5E which engage with the locking projections 1C3. The terminal member 3 is provided at a portion of the base member 1 facing the holding recess 1F.
A pair of holding projections 5F, which form a connector holding portion, project from both sides of the pair of connector pins 3B and 3C and project from both sides of the holding recess 1F. This holding protrusion 5
Engaging projections 5G are provided on the inner surfaces of F that face each other so as to prevent the connectors to which lead wires (not shown) are connected from coming off.

A hard ball detection switch according to one embodiment comprising a total of five parts including the base member 1, the switch member 2, the terminal member 3, the switch actuator 4 and the cover member 5 configured as described above (see FIG. 1). Is assembled by the following procedure. First, as the first step, as shown in FIG.
The switch member 2 is assembled to the base member 1. That is, the mounting pieces 2C of the switch member 2 are placed on the mounting base 1C integrally formed on the back surface side of the base member 1, and a total of four positioning holes 2E are provided on the mounting base 1C. The positioning pin 1C2 is fitted and positioned. Then, the pair of switch pieces 2A and 2B of the switch member 2 are connected to the base member 1
It is accommodated in the accommodation groove portion 1B. At that time, the separator 1B1 formed on the bottom portion on one end side of the housing groove portion 1B projects between the tip end portion of one switch piece 2A and the base end portion of the other switch piece 2B to prevent contact between the two. Further, the positioning projection 1B2 formed on the bottom portion on the other end side of the housing groove portion 1B guides and positions the tip end portion of the other switch piece 2B in a direction away from the one switch piece 2A by its hemispherical tip end portion.

Next, as a second step, as shown in FIG. 4, the terminal member 3 is assembled to the base member 1. That is, the mounting piece 3A of the terminal member 3 is superposed on the mounting piece 2C of the switch member 2, and a total of six positioning holes 3E are formed on each positioning pin 1C2 of the mounting base 1C projecting on the mounting piece 2C. Fit and position. In this assembled state, the tip end of each positioning pin 1C2 protrudes above the mounting piece 3A of the terminal member 3, and the required cut portion 2G on the switch member 2 side and the required cut portion 3G on the terminal member 3 side are base members. The first through hole 1C1 is overlaid. Therefore, in a third step, the tip portion of each positioning pin 1C2 is cold-crimped by the outer punch of the coaxial punch by using a not-shown caulking device, and then the inner punch of the coaxial punch is punched by the through hole 1C1. To cut the required cut portion 3G and the required cut portion 2G.

By the third step, the mounting piece 3A of the terminal member 3 is brought into close contact with the mounting piece 2C of the switch member 2 to be in a conductive state. At that time, the elastic contact piece 2F on the switch member 2 side elastically contacts the mounting piece 3A of the terminal member 3, and the small protrusion 3F on the terminal member 3 side bites into the mounting piece 2C of the switch member 2, The attachment piece 3A and the attachment piece 2C are surely conducted. Further, the pair of switch pieces 2A, 2B of the switch member 2 and the pair of connector pins 3B, 3C of the terminal member 3 are cut into the plus side and the minus side by cutting the cut portion 3G and the cut portion 2G. So that one switch piece 2A conducts only to one connector pin 3B and the other switch piece 2B conducts only to the other connector pin 3C.

Subsequently, as a fourth step, as shown in FIG. 5, the switch actuator 4 is assembled to the base member 1. That is, the notch recess 1D2 of the assembly recess 1D of the base member 1
The passive portion 4B1 side of the lever portion 4B of the switch operator 4 is fitted into the switch actuator 4 and the operating portion 4B2 on the opposite side is elastically contacted with the normally open contact 2D of the one switch piece 2A of the switch member 2. Then, the shaft portion 4A of the switch operator 4 is fitted into the bearing recess 1D1. FIG. 7 shows a state in which the switch actuator 4 is assembled to the base member 1, and the normally open contact 2D between the pair of switch pieces 2A and 2B of the switch member 2 has a clearance of, for example, about 0.10 to 0.15 mm. Is set to.

Finally, as a fifth step, as shown in FIG. 6, the cover member 5 is assembled to the base member 1. That is, the positioning pins 5B projecting from the four corners of the back surface of the cover member 5 are attached to the positioning holes 1 of the pedestal portions 1E of the base member 1.
Along with the insertion into E1, the positioning pin 5C protruding from the central portion of the back surface of the cover member 5 is inserted into the through hole 1C1 of the assembly base 1C of the base member 1. And the cover member 5
A pair of engaging ear pieces 5E protruding from the two sides of the mounting base 1C
Are engaged with a pair of locking projections 1C3 (only one of which is shown) projecting from the side walls of both ends. In this state, the pair of bearing projecting pieces 5D projectingly provided on the back surface of the cover member 5 are interposed between the pair of bearing projecting pieces 5D and the bearing recess 1D1 (see FIG. 2).
The rotation fulcrum 4A1 (see FIG. 5) is rotatably held.
Therefore, in order to reliably maintain this state, the tips of the positioning pins 5B and the positioning pins 5C of the cover member 5 are caulked in a heated state and heat-welded to the base member 1. This work is performed using, for example, a multi-point heating punch (not shown).

In the hard ball detection switch of one embodiment, the cover member 5 is assembled to the base member 1 as shown in FIG. 8 by the above first to fifth steps, and the assembling work is completed. Then, in this assembled state, in the hard ball detection switch according to the embodiment, as shown in FIG. 9, the pair of connector pins 3B and 3C are formed by the holding recess 1F of the base member 1 and the pair of holding projections 5F of the cover member 5. A surrounding connector holding portion is configured, and a connector to which a lead wire (not shown) is connected is detachably attached to the connector holding portion.

In the above-mentioned assembly work, in the first step,
Since the positioning protrusion 1B2 formed on the bottom portion on the other end side of the housing groove portion 1B of the base member 1 positions the other switch piece 2B of the switch member 2 at a predetermined position, the switch member 2 is short-circuited at the normally open contact 2D. Assembly failure is prevented. In addition, the hard ball detection switch that completed the assembly work,
Even if the pair of switch pieces 2A and 2B of the switch member 2 vibrate due to vibration or impact, the vibration of the other switch piece 2B toward the one switch piece 2A side is restricted by the positioning protrusion 1B2. Therefore, the hard-ball detection switch according to the embodiment does not cause the normally-open contact 2D of the switch member 2 to be inadvertently closed due to vibration or impact when mounted on, for example, a pachinko machine, and the vibration resistance of the switch member 2 is prevented. sex,
The impact resistance is improved and the accuracy of detecting hard balls is improved.

Here, in the hard-ball detecting switch of one embodiment, the number of parts to be assembled is such that the base member 1 and the pair of switch pieces 2A and 2B on the plus side and the minus side have the cut portion 2G of the mounting piece 2C. The switch member 2 as a single component continuous through the pair of connector pins 3B and 3C on the plus side and the minus side, and the cut portion 3G of the attachment piece 3A.
There are a total of five points including the terminal member 3 as a single component, the switch operator 4, and the cover member 5 that are continuous through the switch member 2 and the terminal member 3 in advance on the two components on the plus side and the minus side, respectively. Compared to the separated conventional example, the number of parts to be assembled is reduced, and the assembling work becomes simpler. Further, since the cover member 5 is heat-welded and assembled to the base member 1, the assembling work is further simplified as compared with the case where the cover member 5 is fixed by screws.

[0035]

As described above, according to the hard ball detection switch of the present invention, the number of parts to be assembled is the base member, and the pair of positive and negative switch pieces are the cut parts of the mounting piece. A switch member as one component continuous through the terminal member, a terminal member as one component in which a pair of connector pins on the plus side and the minus side are continuous through the cut portion of the mounting piece, a switch operator, and a cover member. It is possible to reduce the number of parts to be assembled to simplify the assembling work.

In the hard-ball detection switch of the present invention, when the base member is provided with a positioning protrusion for positioning the other switch piece of the switch member, the switch member is prevented from being short-circuited at the normally-open contact to prevent an assembly failure. can do. Further, even if the pair of switch pieces vibrate due to vibration or impact, the positioning protrusion of the other switch piece restricts the vibration to one switch piece side.
The normally open contact of the switch member will not be accidentally closed due to vibration or shock. Therefore, the vibration resistance and shock resistance of the switch member can be improved, and the detection accuracy of the hard ball can be improved.

On the other hand, according to the method for assembling the hard-ball detecting switch of the present invention, a pair of switch pieces on the plus side and the minus side are connected to each other through a cut portion of the attachment piece, and the plus switch member is a single component. The terminal member as one component in which the pair of connector pins on the negative side and the negative side are connected via the cut portion of the mounting piece is assembled to the base member, and in this state, each of the mounting pieces of the switch member and the terminal member needs to be cut. Since the parts are cut, the number of parts to be assembled is reduced and the assembly work is simplified as compared with the case where the switch member and the terminal member are preliminarily separated into two parts on the plus side and the minus side. You can Also,
Since the cover member is heat-welded and assembled to the base member,
The assembly work can be simplified as compared with the case of assembling by screwing.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an overall configuration of a hard ball detection switch according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing an assembling mode of a switch member to the base member shown in FIG.

FIG. 3 is a partially enlarged perspective view of the accommodating groove portion shown in FIG. 2 near a positioning protrusion.

4 is an exploded perspective view showing how the terminal member is assembled to the base member shown in FIG.

5 is an exploded perspective view showing how the switch actuator is assembled to the base member shown in FIG. 1. FIG.

6 is an exploded perspective view showing how the cover member is assembled to the base member shown in FIG.

7 is a rear view showing a state in which a switch member, a terminal member and a switch actuator are assembled to the base member shown in FIG.

FIG. 8 is a perspective view of the hard ball detection switch of one embodiment in which the assembly work is completed, as viewed from the back side of the cover member side.

FIG. 9 is a front view of the hard-ball detection switch according to the embodiment in which the assembly work is completed, as viewed from the pair of connector pins.

[Explanation of symbols]

1: Base member 1A: Guide hole 1A1: One side 1B: accommodation groove 1B1: Separator 1B2: Positioning protrusion 1C: Assembly stand 1C1: Through hole 1C2: Positioning pin 1C3: Locking protrusion 1D: Assembly recess 1D1: Bearing recess 1D2: Notched recess 1E: Stand 1E1: Positioning hole 1F: holding recess 2: Switch member 2A: One switch piece 2B: The other switch piece 2C: Mounting piece 2D: Normally open contact 2E: Positioning hole 2F: Elastic contact piece 2G: Cut required 3: Terminal member 3A: Mounting piece 3B: One connector pin 3C: The other connector pin 3D: Notch 3E: Positioning hole 3F: Small protrusion 3G: Cut required 4: Switch actuator 4A: Shaft 4A1: Rotation fulcrum 4B: Lever part 4B1: Passive part 4B2: Actuator 5: Cover member 5A: Cover part 5B: Positioning pin 5C: Positioning pin 5D: Bearing protrusion 5E: Engagement ear piece 5F: Holding protrusion 5G: Engagement protrusion

Claims (3)

[Claims] 1. A base member having a guide hole for passing a hard ball, a switch member in which a pair of switch pieces which can elastically contact through a normally-open contact point are projected on the mounting piece, and a mounting piece of the switch member. A terminal member having a pair of connector pins projecting from a mounting piece that is superposed on and electrically connected to each other, and a hard ball that passes through the guide hole by elastically contacting one switch piece of the switch member and facing the inside of the guide hole. A switch member that is pushed by the switch to close the normally open contact; and a cover member that forms a connector holding portion that surrounds the pair of connector pins of the terminal member between the base member and the cover member. A hard-ball detecting switch which is assembled with the switch member, the terminal member, and the switch actuator together with the base member so as to cover the switch member, the switch member, and a mounting piece of the switch member. And a mounting member for the terminal member, each of which is provided with a cut-off portion that is cut after being assembled to the base member so as to separate the pair of switch pieces and the pair of connector pins that are electrically connected to each other into a positive side and a negative side. A hard ball detection switch characterized by being used. 2. The hard ball detection switch according to claim 1, wherein the base member is formed with a positioning protrusion for positioning the other switch piece of the switch member. . 3. The method of assembling a hard ball detection switch according to claim 1, wherein at least the switch member and the terminal member are assembled to a base member, and each of the attachment pieces that are overlapped with each other is required to be cut. A method for assembling a hard-ball detecting switch, characterized in that, after cutting the portion, a cover member is heat-welded and assembled to a base member to which a switch actuator is assembled.