阅读说明：本技术 连接器 (Connector with a locking member ) 是由 高野龙太郎 土屋博崇 于 2019-05-05 设计创作，主要内容包括：本发明提供一种将连接壳固定于壳基体时的负担小,还能应对多极化的连接器。该连接器具备：筒状的连接壳(2)、以及具有与连接壳(2)嵌合的筒状的嵌合部(30)的壳基体(3),在由连接壳(2)和壳基体(3)构成的壳体内,容纳有保持接触件(4)的绝缘子(5),连接壳(2)具备从外周面能变形地立起的防脱片(20、20),防脱片(20、20)被紧固,并与形成于壳基体(3)的防脱卡定部(301)卡定。(The invention provides a connector which has less burden when fixing a connecting shell to a shell base body and can deal with multi-polarization. The connector includes: a cylindrical connecting shell (2) and a shell base body (3) having a cylindrical fitting portion (30) that fits the connecting shell (2), wherein an insulator (5) that holds a contact (4) is housed in a shell that is formed by the connecting shell (2) and the shell base body (3), the connecting shell (2) is provided with anti-release pieces (20, 20) that rise from the outer peripheral surface in a deformable manner, and the anti-release pieces (20, 20) are fastened and locked to an anti-release locking portion (301) that is formed in the shell base body (3).)

1. A connector is provided with: a cylindrical connection housing and a housing base body having a cylindrical fitting portion to be fitted to the connection housing, wherein an insulator holding a contact is accommodated in a housing formed by the connection housing and the housing base body,

the connecting shell is provided with a slip-off preventing piece which can be deformed and erected from the outer peripheral surface,

the retaining piece is fastened and is retained by a retaining portion formed in the housing base.

2. The connector of claim 1,

the housing base body is provided with a connection housing insertion portion into which the connection housing is inserted, on the outer side of the fitting portion,

a fastening hole for fastening the anti-slip sheet is formed in the peripheral wall of the connecting shell insertion portion.

3. Connector according to claim 1 or 2,

the anti-release locking portion is protrudingly provided on an outer peripheral surface of the fitting portion, and the anti-release piece is bent toward a shell base side of the anti-release locking portion.

4. The connector of claim 2,

the locking prevention portion is formed at the coupling case insertion portion.

5. The connector according to any one of claims 1 to 4,

the connector is a multi-stage connector as follows: in the case base, a plurality of fitting portions protrude from an end surface, and a connection case is fitted to each of the fitting portions.

Technical Field

The present invention relates generally to a connector for connecting a coaxial cable used for high-frequency signal transmission to an electronic device or for connecting coaxial cables to each other.

Background

Conventionally, coaxial connectors have been used for connecting a coaxial cable for transmitting a high-frequency signal to an electronic device or connecting coaxial cables to each other.

The coaxial connector includes a cylindrical connection housing and a housing base having a cylindrical fitting portion to be fitted to the connection housing, and is configured to accommodate an insulator holding a contact in a housing formed by the connection housing and the housing base.

The housing is configured to: the coaxial cable connector includes a housing base body and a connecting housing, which are separately formed by die casting and connected to a coaxial cable and a substrate, and the connecting housing is assembled to the housing base body.

As such a housing, for example, the following structures are known: a connecting shell accommodating an insulator is inserted into the shell base having the rear end side opening (inserted from the rear end side opening), and the fitting portion of the shell base and the connecting shell are press-fitted together (see, for example, patent document 1).

However, the above-described conventional techniques have the following problems: in order to crimp the fitting portion between the housing base and the connecting housing, the connecting housing and the insulator may be damaged by pressure during crimping, and therefore the following machining accuracy is required: the fitting portion of the cylindrical case base is formed to have an appropriate thickness that can be pressure-bonded without being broken.

In particular, in the case of making such a coaxial connector multipolar, it is conceivable to adopt the following structure for a single housing base body: a plurality of cylindrical fitting portions are formed to project from end faces thereof, and the connecting shell is attached to each fitting portion.

In this case, since the shape of the case base is complicated, high processing accuracy is required in that the fitting portion of the case base formed into a cylindrical shape by casting or cutting has an appropriate thickness that can be pressure-bonded without being broken, and therefore, there is a possibility that difficulty is high and manufacturing cost is increased.

Disclosure of Invention

Problems to be solved by the invention

The present invention has been made in view of the above conventional problems, and an object of the present invention is to provide a connector which has a small load when fixing a connecting shell to a shell base and can cope with multi-polarization.

Means for solving the problems

Solution 1 for solving the above conventional problem is characterized by comprising: in the connector, the connecting shell includes a retaining piece that rises from an outer peripheral surface thereof so as to be deformable, and the retaining piece is fastened and engaged with a retaining portion formed in the housing base.

In the structure of claim 2, in addition to the structure of claim 1, the housing base body includes a connection housing insertion portion into which the connection housing is inserted outside the fitting portion, and a fastening hole for fastening the separation preventing piece is formed in a peripheral wall of the connection housing insertion portion.

In the structure of claim 3, in addition to the structure of claim 1 or 2, the locking prevention portion is provided so as to protrude from an outer peripheral surface of the fitting portion, and the locking prevention piece is bent toward the housing base of the locking prevention portion.

In the structure of claim 4, in addition to the structure of claim 2, the locking prevention portion and the fastening hole are formed integrally with the connecting shell insertion portion.

The feature of aspect 5 is that, in addition to the structure of any one of aspects 1 to 4, the connector is a multi-stage connector as follows: in the case base, a plurality of fitting portions protrude from an end surface, and a connection case is fitted to each of the fitting portions.

Effects of the invention

The connector of the present invention has the structure described in claim 1, and the fixing strength of the connecting shell and the shell base is determined by the engagement of the locking piece and the locking prevention portion, and the operation of locking the locking piece to the locking prevention portion is also determined by the tightening with a small pressure, so that the load when fixing the connecting shell to the shell base is small, the restriction on the thickness of the shell base fitting portion is reduced, the connector can be easily processed, and accordingly, the manufacturing cost is also reduced.

Further, in the present invention, by providing the structure described in claim 2, the centering of the connecting case with respect to the fitting portion can be performed, and the fastening work of the anti-slip piece can be appropriately performed.

In addition, in the present invention, by providing the structure described in claim 3, the case and the case base can be stably fixed and connected.

Further, in the present invention, by providing the structure of claim 4, the case and the case base can be stably fixed and connected.

Further, in the present invention, by providing the structure of claim 5, it is possible to cope with multi-polarization.

Drawings

Fig. 1 is a perspective view showing an example of a connector of the present invention.

Fig. 2 is a longitudinal section view of the same.

Fig. 3 is an exploded side view of the same.

Fig. 4 is a front view showing the case base in fig. 1, fig. 4 (b) is a rear view thereof, fig. 4 (c) is a side view thereof, and fig. 4 (d) is a plan view thereof.

Fig. 5 is a perspective view showing the connection housing in fig. 2, fig. 5 (a) is a view seen from the upper side, fig. 5 (b) is a view seen from the lower side, and fig. 5 (c) is a view seen from the upper side in a state where the separation preventing piece is fastened.

Fig. 6 is a perspective view for explaining a connecting operation of the case base and the connecting case.

Fig. 7 is a partially enlarged plan view showing the locking body of the above-described locking piece and locking portion.

Fig. 8 is a partially enlarged sectional view of the same.

Fig. 9 is a partially enlarged plan view showing another embodiment of the locking prevention section.

Description of the reference numerals

1: a connector; 2: a connecting shell; 20: an anti-drop sheet; 21: an elastic contact piece portion; 22: a through slot is inserted; 23: crimping the convex part; 24: a press-fitting projection; 3: a housing base; 30: a fitting portion; 301: an anti-drop locking part; 31: a housing base body; 32: an insulator insertion portion; 33: a connection housing insertion portion; 331: a fastening hole; 34: inserting the groove; 4: a contact member; 41: a contact body; 42: a substrate connecting portion; 5: an insulator; 51: a contact holding portion; 511: a contact insertion hole; 52: a substrate connecting portion accommodating portion; 521: a substrate connecting part accommodating groove; 6: a cover body; 71. 72: and (7) a cover.

Detailed Description

Next, an embodiment of the connector of the present invention will be described based on examples shown in fig. 1 to 8. In the present embodiment, a multipolar coaxial connector is described as an example of a connector, and reference numeral 1 denotes a connector.

The connector 1 includes: the cylindrical connection housings 2 and 2 … and the housing base 3 having the cylindrical fitting portion 30 to be fitted to the connection housings 2 and 2 … are configured to accommodate the insulators 5 holding the contacts 4 in a multilayer arrangement in a housing constituted by the connection housings 2 and 2 … and the housing base 3.

The connector 1 includes a cover 6 made of insulating resin on the front surface side of the housing base 3, and the connecting housings 2 and 2 … are accommodated in the cover 6, and a mating connector (not shown) is inserted into the cover 6, whereby the connecting housings 2 and 2 … and the contact 4 are connected to the mating connector.

As shown in fig. 4, the case base 3 includes a hollow box-shaped case base body 31 and a plurality of cylindrical fitting portions 30 and 30 … provided to protrude from one end surface (distal end surface) of the case base body 31, and is formed by die-casting a conductive material such as a zinc alloy.

The housing base body 31 has a hollow box shape in which insulator insertion portions 32, 32 having open rear and bottom surfaces are arranged in a vertically stacked manner, and a plurality of cylindrical fitting portions 30, 30 … are integrally provided on the front end surface so as to communicate with the insulator insertion portions 32, 32.

The housing base 3 is provided with a connecting housing insertion portion 33 surrounding the proximal end side portion of the fitting portion 30 on the outside of each fitting portion 30, an annular groove-shaped insertion groove 34 opened on the front surface side is formed between the inner surface of the connecting housing insertion portion 33 and the fitting portion 30, and the proximal end side of the connecting housing 2, 2 … is inserted into the insertion groove 34 and fitted to the outside of the fitting portion 30.

The fitting portion 30 is formed in a cylindrical shape with both ends open, and integrally protrudes from the front surface side end surface in a state of communicating with the insulator insertion portion 32 of the housing base body 31, and the tip end side (contact holding portion 51) of each insulator 5 inserted from the rear end opening side of the housing base body 31 is inserted into the fitting portion 30.

The fitting portion 30 is provided with a retaining locking portion 301 protruding at a predetermined position on the outer peripheral surface thereof, and the connecting shells 2 and 2 … fitted to the fitting portion 30 are prevented from coming off by locking the retaining pieces 20 and 20 of the connecting shells 2 and 2 … to the back side in the connecting direction of the retaining locking portion 301.

The coupling housing insertion portion 33 is formed so as to surround the fitting portion 30 by a peripheral wall integrally rising from the front end surface of the housing base body 31. The connecting shell insertion portion 33 may be formed integrally with the peripheral wall surrounding each fitting portion 30 as in the present embodiment, or may be formed in a shape rising so as to surround the fitting portions 30 one by one.

In the coupling-housing insertion portion 33, a fastening hole 331 is formed in accordance with the position of the retaining locking portion 301, and the retaining pieces 20, 20 of the coupling housings 2, 2 … fitted to the fitting portion 30 can be fastened through the fastening hole 331.

The fastening hole 331 also functions as an avoidance passage that prevents the rising retaining pieces 20 and 20 from interfering with the peripheral wall of the connecting-case insertion portion 33.

The fastening hole 331 is formed in a recessed hole shape having an opening on the front surface side and the outer surface side (upper surface or lower surface), and the proximal end portion of the fitting portion 30 and the retaining locking portion 301 are exposed to the outer surface side through the fastening hole 331.

As shown in fig. 5, the connecting cases 2 and 2 … are formed into a cylindrical shape with both ends open in the axial direction by press working a conductive plate material, and are fitted into the fitting portions 30 provided to protrude from the end face of the case base 3.

The connecting shell 2, 2 … has a plurality of notches on the distal end side thereof facing the axial direction at intervals in the circumferential direction, and the distal end side of the cylindrical shape is divided in the circumferential direction by the notches, so that a plurality of (a pair of in the present embodiment) elastic contact piece portions 21, 21 that come into contact with the opposite terminals are formed in the circumferential direction.

Further, the coupling shells 2 and 2 … have a pair of anti-slip pieces 20 and 20 formed upright on the rear end side thereof, and an insertion groove 22 through which the anti-slip locking portion 301 is inserted is formed between the two anti-slip pieces 20 and 20.

The anti-slip sheets 20 and 20 are formed by using the joint portions of the conductive plate material, and have a shape in which rectangular protruding pieces are obliquely and outwardly raised from the circumferential inner edges of the insertion grooves 22.

Further, the outer peripheral surface of the rear end side of the connecting shell 2, 2 … is provided with a plurality of pressure contact protrusions 23, 23 … protruding outward at intervals in the circumferential direction.

The pressure contact protrusions 23 and 23 … are positioned so that the connection housings 2 and 2 … are concentric with the fitting portion 30 by the pressure contact protrusions 23 and 23 … being pressed against the inner surface of the connection housing insertion portion 33 by fitting the connection housing 2 to the outside of the fitting portion 30 and being inserted into the connection housing insertion portion 33.

The reference numeral 24 denotes a press-fitting protrusion, and the connection housing 2 is press-fitted into the connection housing insertion portion 33 by pressing the press-fitting protrusion 24 in the cylindrical axis direction.

To fix the connection housings 2 and 2 … to the housing base 3, first, as shown in fig. 6, the connection housing 2 is fitted to the fitting portions 30 from the axial direction, and the press-fitting projection 24 is pressed until the rear end of the connection housing 2 abuts against the front end surface of the housing base body 31.

At this time, as shown in fig. 5 (a), the retaining pieces 20 and 20 are inclined outward in the initial state and are in a state of not contacting the retaining engagement portion 301, and the retaining engagement portion 331 is inserted into the insertion groove 22 and has the fastening hole 331 formed therein, so that interference with the coupling housing insertion portion 33 is not generated.

Further, by the rear end portions of the connection shells 2 and 2 … being press-fitted into the connection shell insertion portion 33, the press-fitting protrusions 23 and 23 … are press-fitted to the inner surface of the peripheral wall of the connection shell insertion portion 33, the connection shells 2 and 2 … are prevented from coming off the fitting portion 30 with a certain strength, and the connection shells 2 and 2 … are positioned (centered) so as to be arranged concentrically with the fitting portion 30.

Next, the retaining pieces 20, 20 are fastened by a fastening tool of a dedicated jig or device through the fastening hole 331, and as shown in fig. 7 and 8, the retaining pieces 20, 20 are bent toward the back side (the case base body 31 side) of the retaining locking portion 301, and the retaining pieces 20, 20 are engaged with the retaining locking portion 301 to be retained.

In this case, the locking pieces 20 and 20 are only required to be bent toward the back side (the side of the housing body 31) of the locking portion 301 for locking, and the pressure is not applied to the fitting portion 30 and the insulator 5 therein.

The contact 4 is integrally formed of a conductive metal member, includes a contact body 41 having a pin shape facing the connection direction of the connector 1, and a board connection portion 42 extending downward from the rear end of the contact body 41, and is formed in an L shape. The lengths of the contact body 41 and the substrate connection portion 42 are different between the upper stage side and the lower stage side.

The insulator 5 is formed of an insulating resin, includes a contact holding portion 51 elongated in the connector connection direction, and a board connection portion accommodating portion 52 extending downward from a rear end of the contact holding portion 51, and has an L-shape in side view.

The insulator 5 has a contact insertion hole 511 penetrating the contact holding portion 51 in the front-rear direction, communicates with the rear end side of the contact insertion hole 511, and has a groove-like substrate connecting portion accommodating groove 521 opened on the lower surface side, and by press-fitting the contact 4 from the rear end side of the insulator 5, the contact body 41 is inserted through the contact insertion hole 511, the tip end of the contact body 41 is projected from the tip end of the contact holding portion 51, and the substrate connecting portion 42 is held in the substrate connecting portion accommodating groove 521 to be integrated with the contact 4.

Then, the insulators 5 of the holding contacts 4 are inserted into the insulator insertion portions 32 and 32 from the rear end opening side of the housing body 3, and in this state, the fixing covers 71 and 72 are pressed into the housing body 31 from below to close the rear ends of the insulator insertion portions 32 and 32, whereby the insulators 5 are fixed in the housing body 3.

In the connector 1 thus arranged, the fixing of the respective connecting shells 2 and 2 … to the housing base 3 is not affected by the pressure contact, and the load on the fitting portion 30 and the insulator 5 generated at the time of fixing can be reduced by fastening the retaining pieces 20 and deforming them to engage with the retaining engagement portion 301.

This reduces the restrictions on the thickness and the like when forming the fitting portion 30, does not require high precision in machining, increases the degree of freedom in design, and can reduce the manufacturing cost.

In particular, in the present invention, when a plurality of fitting portions 30 are integrally provided on a single housing base body 3, the restrictions on the thickness and the like in the processing of each fitting portion 30 and the housing base body 3 provided with each fitting portion 30 are reduced, so that the processing becomes easy, and the multi-polarization can be favorably accommodated.

Further, since the outside of the fitting portion 30 is covered with the connecting cases 2 and 2 …, the resistance to the force acting in the direction intersecting the cylindrical axis direction of the fitting portion 30 is also improved, and there is an effect of preventing the fitting portion 30 from being broken.

In the present invention, the centering of the coupling cases 2 and 2 … and the fitting portion 30 can be appropriately performed by providing the coupling case insertion portion 33, and the operation of connecting the coupling cases 2 and 2 … and the case base 3 can be smoothly performed by providing the fastening hole 331 in the coupling case insertion portion 33 to avoid the interference between the separation preventing pieces 20 and the coupling case insertion portion 33.

In the above-described embodiment, the example in which the locking portion 301 for preventing disengagement is provided so as to protrude from the outer periphery of the fitting portion 30 has been described, but the embodiment of the locking portion for preventing disengagement is not limited to this, and for example, as shown in fig. 9, the locking portions 332 and 332 for preventing disengagement may be provided in the coupling housing insertion portion 33. The same components as those of the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

The locking portions 332 and 332 for coming-off prevention are formed in a concave hole shape communicating with both ends of the fastening hole 331 and are bent outward when the anti-coming- off prevention pieces 20 and 20 are fastened, thereby engaging with inner edges of the locking portions 332 and 332 for coming-off prevention.

In the above-described embodiment, the multipolar coaxial connector 1 is described as an example, but the present invention is also applicable to a single-pole coaxial connector 1.

Further, the shapes of the insulator 5 and the contact 4 are not limited to the above-described embodiments, and for example, the connector of the embodiment connected to a coaxial cable may be applied.