JPH06283219A - Terminal board - Google Patents

Abstract

PURPOSE:To provide a terminal board which allows smooth operation of a release button. CONSTITUTION:A case 10 is provided with a quick connection terminal 20 inside. The quick connection terminal 20 is provided with a release button 23 to remove a wire guided from a wire insert hole 17 and held between a terminal frame 21 and a lock spring 22. The release button 23 is provided with a guide protrusion 23c protruded on one face of the middle in a forward and backward moving direction. Formed on the inside face of the case 10 is a guide groove 11 which is engaged with the guide protrusion 23c to guide the release button 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal block provided with a quick-connect terminal in which an electric wire is sandwiched between a terminal frame and the terminal frame by utilizing the elasticity of a lock spring.

[0002]

2. Description of the Related Art Conventionally, there has been provided a terminal block having a quick-connect terminal in a case. The quick-connect terminal includes a terminal frame formed by bending a conductive metal plate, a locking spring having an elastic locking piece and a contact portion in a direction of approaching one surface of the terminal frame, and a part thereof. And a release button that is disposed so as to face the locking piece and has the other end protruding from the case. When the electric wire is introduced into the case through the electric wire insertion hole formed in the case, the electric wire is clamped between the locking piece and the contact portion and the terminal frame. That is, the locking piece is inclined so as to reduce the distance from the one surface of the terminal frame in the direction in which the electric wire is introduced, and the withdrawal of the electric wire is prohibited by the leading edge of the locking piece biting into the electric wire. It is like this. When the electric wire is pulled out from the case, the release button is pushed into the case to separate the tip of the locking piece from the one surface of the terminal frame, and the engagement state between the electric wire and the locking piece is released. Here, the release button is inserted into a through hole formed in the case so as to be able to move forward and backward, and a locking piece formed at an intermediate portion in the forward and backward direction of the release button is locked to the inner peripheral surface of the case at the peripheral portion of the through hole. By doing so, the release button is prevented from coming off. Further, the release button is guided by the inner peripheral surface of the through hole.

[0003]

In the above-mentioned conventional structure, since the release button is guided only by the inner peripheral surface of the through hole, the release button is supported only at one position in the advancing / retreating direction. There is a problem that the release button is apt to wobble when moving forward and backward, and a smooth operation feeling cannot be obtained when pressing the release button.

Further, in order to lock the retaining piece provided on the release button on the inner peripheral surface of the case, the release button needs to be introduced into the through hole from the inside of the case. Then, there arises a problem that it is difficult to attach the release button to the case. The present invention is intended to solve the above problems, and enables the release button to be operated smoothly,
Another object of the present invention is to provide a terminal block in which a release button can be attached from the outside of the case to facilitate assembly work.

[0005]

According to a first aspect of the present invention, there is provided a terminal frame housed in a case, a locking piece having elasticity and a contact portion that are oriented so as to approach one surface of the terminal frame, and an electric wire insertion opening in the case. A lock spring that clamps the electric wire introduced into the case through the hole between the locking piece and the contact portion and the terminal frame, and a shape in which one end contacts the locking piece and the other end projects to the outer surface of the case. A release button that is inserted into a through hole formed in the partition wall of the case so as to be able to advance and retreat, and that when the other end is pushed into the case, the lock piece is bent in a direction of separating from the one surface of the terminal frame. The lock piece and the contact portion are arranged in order in the direction of introducing the electric wire into the case through the electric wire insertion hole, and the locking piece is a terminal in the direction of introducing the electric wire so that the leading edge engages with the electric wire introduced. Tilt in the direction that reduces the distance from the above one side of the frame. Guide projections on one surface of the intermediate portion is projected in the moving direction of the release button, the inner surface of the case, characterized in that formed by forming the guide grooves for guiding the release button engages the guide projection.

According to the second aspect of the present invention, the terminal frame housed in the case, the locking piece having elasticity in the direction of approaching one surface of the terminal frame, and the contact portion are introduced into the case through the wire insertion hole opened in the case. A lock spring for holding the electric wire between the locking piece and the contact portion and the terminal frame, and a lock spring formed on the partition wall of the case such that one end of the locking spring abuts on the locking piece and the other end projects to the outer surface of the case. And a release button for bending the locking piece in a direction to separate the locking piece from the one surface of the terminal frame when the other end is pushed into the case and is inserted into the through hole. Are arranged in order in the direction in which the electric wire is introduced into the case through the electric wire insertion hole, and the locking piece is directed toward the direction in which the electric wire is introduced so that the leading edge of the electric wire is engaged with the one surface of the terminal frame. How to move the release button forward and backward by inclining to reduce the distance In the middle part of the locking button, a locking claw is formed which is projected on one surface of the release button and whose side surface on the one end side is a guide surface that is inclined toward the one end so as to reduce the projecting dimension. The protrusion size of the other end side is set so that the side surface on the other end side can contact a part of the inner peripheral surface of the case at the peripheral edge of the through hole, and the guide surface is in contact with the peripheral part of the through hole. At least one of the peripheral portion of the through hole in the case and the locking claw is made of a flexible material so that the locking claw of the release button can be introduced inside the case. Is characterized by.

The invention according to claim 3 is characterized in that an erroneous operation preventing rib is provided so as to project around the through hole on the outer surface of the case. According to a fourth aspect of the present invention, the case includes a body whose one surface along the wire introduction direction is open, and the side edge of the terminal frame is provided with a holding claw protruding from the inner peripheral surface intersecting the opening surface of the body. The holding claw is characterized in that the side edge on the opening side of the body is substantially parallel to the opening surface, and the side edge on the bottom surface side of the body is an inclined surface that is inclined toward the bottom surface of the body so as to reduce the projecting dimension. To do.

According to a fifth aspect of the present invention, the case has a body whose one surface is open along the direction of introduction of the electric wire, and the connecting projection is provided on the peripheral portion of one of the one surface on the opening side of the body and the opposite surface of the one surface. A connecting hole is formed on the other side of the body so that the connecting protrusion provided on the other body is press-fitted into the body. It is characterized in that it is formed with a removal groove into which a tool in the shape of a slot can be inserted.

[0009]

According to the invention of claim 1, a guide projection is provided on one surface of an intermediate portion of the release button in the advancing / retracting direction, and a guide groove for engaging the guide projection and guiding the release button is provided on the inner side surface of the case. Since the release button is formed, the guide groove guides the guide protrusion when the release button moves forward and backward, and the release button is supported at two points of the peripheral edge of the through hole and the guide groove. As a result, the release button moves smoothly without wobbling and the feeling of operation is improved.

According to the second aspect of the present invention, a guide is provided with a locking claw projecting on one surface in the middle of the release button in the advancing and retracting direction, and one side surface of the locking claw in the advancing and retracting direction of the release button being inclined. At least one of the peripheral portion of the through hole and the engaging pawl so that the engaging pawl of the release button can be introduced into the case while the guide surface is in contact with the peripheral portion of the through hole. Since it is made of a flexible material, the projecting size of the locking claw from one surface of the release button is set so that it can contact the peripheral portion of the through hole on the inner peripheral surface of the case. By pressing the release button into the through hole from the outside of the case, the release button can be attached to the case. Therefore, if the release button is press-fitted from the outside of the case after the terminal frame or lock spring is installed in the case and the release button is attached, the tip of the release button should come into contact with the locking spring lock piece and fall off. Therefore, the release button can be easily assembled. Moreover, since the release button is attached from the outside of the case,
Even a small terminal block can be easily handled.

According to the third aspect of the present invention, the erroneous operation prevention rib is provided around the through hole on the outer side surface of the case so as to prevent the release button from being pushed into the case. It is possible to prevent the release button from being pushed in by receiving the electric wire connected to the terminal block with the erroneous operation prevention rib when the terminal block is incorporated in the device.

According to the fourth aspect of the present invention, a part of the case is formed by a body whose one surface is open, and the holding claws provided on the side edges of the terminal frame are pressed against the inner peripheral surface of the body. The claws have the side edges on the opening side of the body substantially parallel to the opening surface, and the side edges on the bottom side of the body are inclined surfaces to reduce the projecting dimension toward the bottom surface of the body. Since the holding claws are pressed into contact with the body and temporarily held by being pressed into, the terminal frame can be prevented from falling off even if the case is open during the assembly.

According to the fifth aspect of the present invention, a part of the case is formed by a body whose one surface is open, and the connecting projection is projected on either one of the opening side of the body and the opposite surface. Since a connecting hole into which the connecting protrusion is press-fitted is formed on the other side, it is possible to connect the plurality of bodies to each other by sequentially connecting the connecting protrusion and the connecting hole for the plurality of bodies. it can. Here, since the opening surface of the body is closed by another body, it suffices to provide a member for closing the opening surface only for one body, and to provide a member for closing the opening surface for all the bodies. Compared to the case, the exclusive space of the same number of bodies can be reduced. Moreover, the bodies are joined together by press-fitting the connecting projections into the connecting holes, and the removal groove is formed at a point on the outer peripheral surface on the opening side of the body so that the plate-shaped tool can be inserted while the bodies are connected. Therefore, the body in the coupled state can be easily separated by inserting a tool such as a flat-blade screwdriver into the removal groove and prying. By making the body detachable in this way, an arbitrary number of terminal blocks can be provided.

[0014]

【Example】

(Embodiment 1) As shown in FIG. 1, a case 10 is formed by a body 11 whose side surface is open and a flat cover 12 which covers the opening of the body 11. Both the body 11 and the cover 12 are made of synthetic resin as a flexible material. The body 11 is formed as shown in FIG. 5 to FIG. 10, and the connection protrusions 13 are provided at four corners of the side surface of the body 11 on the opening side, and the connection projections 13 are formed at the four corners of the side surface opposite to the opening. A connection hole 14 (see FIG. 9) into which the pressure can be press-fitted is provided. As shown in FIG. 9, a bulging portion 13a having a diameter larger than that of the base end portion is formed at the tip end of the connecting protrusion 13.
And a receiving portion 14a with which the bulging portion 13a is engaged is formed inside the connecting hole 14. Further, as shown in FIGS. 11 and 12, at the four corners of the cover 12, assembling holes 15 through which the connecting protrusions 13 are inserted are punched, and when the connecting protrusions 13 are press-fitted into the assembling holes 15, the bulging portions 13a are formed. After passing through 15, the body 11 and the cover 12 are joined together in such a manner that the peripheral portion of the assembly hole 15 is sandwiched between the bulging portion 13a and the body 11. 1 across the surface of the body 11 facing the cover 12 and the outer peripheral surface of the body 11.
A removal groove 16 is formed at the location. A plate-shaped tool such as a flat-blade screwdriver can be inserted into the removal groove 16 in a state where the cover 12 is coupled to the body 11, and the body 1
It is possible to release the connection state between 1 and the cover 12.

A quick-connect terminal 20 having a terminal frame 21 and a lock spring 22 is housed in a case 10 composed of a body 11 and a cover 12. As shown in FIG. 14, the terminal frame 21 is formed by bending a conductive metal plate so that it has a substantially U-shaped cross section. The two terminal pieces 21a are continuously and integrally formed. The terminal piece 21a is pulled out of the case 10 through an insertion groove 11a formed in the peripheral wall of the body 11. The terminal frame 21 is housed in the body 11 with the U-shaped center piece facing the bottom surface of the body 11 (the right side surface in FIG. 4), and is placed in the bottom surface of the body 11 and the U-shaped center piece of the terminal frame 21. The lock spring 22 is housed in the sandwiched space.

The lock spring 22 has a contact portion 22a and a locking piece 22b which face the other leg of the U-shaped terminal frame 21 by bending both ends of the conductive metal strip in the longitudinal direction. The center piece between the contact portion 22a and the locking piece 22b comes into contact with the one leg piece of the terminal frame 21. The contact portion 22a is formed at a portion facing the terminal frame 21 in a portion bent in a substantially S shape by folding one end portion in the longitudinal direction of the strip once and then folding it again.
The locking piece 22b is formed by bending the other end of the strip plate in the longitudinal direction once and is inclined so that the distance from the terminal frame 21 becomes smaller toward the tip. Contact part 22a and locking piece 2
A wire insertion hole 17 is formed through the body 11 on a straight line in the direction in which 2b and 2b are sequentially arranged. Therefore, when an electric wire is introduced from the outside of the case 10 through the electric wire insertion hole 17,
The electric wire is sandwiched between the locking piece 22b and the contact portion 22a and the terminal frame 21, so that the electric wire and the terminal frame 21 are electrically connected. Here, the tip of the locking piece 22b bites into a part of the electric wire, and the locking piece 22b is inclined so as to reduce the distance from the terminal frame 21 along the direction in which the electric wire is introduced. On the other hand, even if tension is applied in the direction of pulling out from the case 10, the electric wire can be prevented from falling off. Here, since the exposed length of the core wire needs to be constant when introducing the insulation-coated electric wire, a gauge 12a is formed on the outer surface of the cover 12 to give a guide for the exposed length of the core wire. As shown in FIGS. 15 and 16, the leg piece of the terminal frame 21 facing the contact portion 22a and the locking piece 22b has an uneven surface in which unevenness is alternately repeated along the direction orthogonal to the wire introduction direction. 21d is formed.

Holding claws 21b are provided on both side edges of one leg of the terminal frame 21 in a protruding manner. As shown in FIG. 15, the holding claw 21b has a side surface on the opening side of the body 11 substantially parallel to the opening surface, and the side surface on the side opposite to the opening surface has a smaller protruding size toward the tip of the leg piece. Thus, the inclined surface 21c is inclined. Further, as shown in FIGS. 2 and 17, the holding claws 21b are the holding grooves 1 formed on the inner peripheral surface of the body 11.
1b is inserted. Therefore, the lock spring 2 is attached to the terminal frame 21.
If the terminal frame 21 is press-fitted into the body 11 in the form of housing 2, the terminal frame 21 is temporarily held by the body 11, and at the same time,
Since the lock spring 22 is held between the body 11 and the terminal frame 21, the terminal frame 21 and the lock spring 22 can be temporarily held by the body 11 even when the cover 12 is not coupled to the body 11. is there.

By the way, in order to pull out the electric wire sandwiched between the terminal frame 21 and the lock spring 22, it is necessary to bend the locking piece 22b in a direction away from the leg piece of the terminal frame 21. A release button 23 is attached to the body 11 for this purpose. The release button 23 is inserted into a through hole 18 penetrating the peripheral wall (upper wall in FIG. 1) of the body 11 so as to be able to advance and retract, and one end face in the advancing and retracting direction is arranged so as to face the locking piece 22b. Further, a cutout 21e is formed in the leg of the terminal frame 21 so that the release button 23 can pass between it and the bottom surface of the body 11. The surface of the release button 23 facing the locking piece 22b serves as a pressing surface 23b inclined along the locking piece 22b. The other end of the release button 23 in the advancing / retreating direction projects from the outer peripheral surface of the body 11 by the spring force of the locking piece 22b.
An insertion groove 23a into which a tool such as a flat-blade screwdriver can be inserted is formed on the end surface of the release button 23 exposed from the body 11.

As shown in FIGS. 18 to 21, the release button 23
The guide protrusion 23 is provided on one side surface of the intermediate portion in the moving direction of
c is projected, and a locking claw 23d is projected on the other side surface.
A guide surface 23e is formed on one side surface of the locking claw 23d in the advancing / retreating direction of the release button 23 so as to be inclined so as to reduce the protrusion size in the direction toward the locking piece 22b. The other side surface of the locking claw 23d forms a locking surface 23f that is substantially parallel to the inner peripheral surface of the body 11 in the peripheral portion of the through hole 18, and the release dimension of the locking claw 23d depends on the release button 23.
It is set so that it does not fall off from the body 11 through 8. Guide protrusion 2 on the bottom surface of body 11
A guide groove 11c is formed in a portion corresponding to 3c.
As shown in FIGS. 4 and 22, a guide protrusion 23c is inserted into the guide groove 11c to guide and move the release button 23. Therefore, the release button 23 is guided at two places, the through hole 18 and the guide groove 11c, and moves smoothly.

As shown in FIGS. 2 and 3, a pair of erroneous operation preventing ribs 19 are provided on the outer surface of the body 11 at the peripheral portion of the through hole 18 so as to project. The erroneous operation prevention rib 19 prevents the release button 23 from being pushed into the body 11 and prevents the electric wire from coming off even when a member having a size that extends over both the erroneous operation prevention ribs 19 contacts the body 11. To do. For example, as shown in FIG. 23, if the electric wire A passes between the housing B and the case 10 when the case 10 is incorporated in the device, the release button 23 is pushed in when there is no erroneous operation prevention rib 19. Wire A is fast-connecting terminal 2
Although it may be used in a state where it does not come into sufficient contact with 0, the provision of the erroneous operation prevention rib 19 can prevent such inconvenience from occurring.

When assembling the above-described terminal block, the release button 23 is passed through the through hole 18 from the inside of the body 11, and then the lock spring 22 is attached to the terminal frame 21.
1 is press-fitted into the body 11. In this state, the terminal frame 21 is held by the body 11 even if the cover 12 is not joined, so that the parts do not fall off from the body 11 and the handling becomes easy.

By the way, although there is a case where only one terminal block is used alone, a plurality of terminal blocks are often arranged and used. In this case, as shown in FIGS. 24 and 25, when the cover 12 is not joined to the body 11, the necessary number of bodies 11
As for the connection protrusions 13, the plurality of bodies 11 can be integrally combined without the need for the cover 12 by sequentially fitting the connection protrusions 13 into the connection holes 14. If a plurality of bodies 11 are coupled in this way and then a cover 12 is coupled only to the body 11 at one end, a plurality of terminal blocks can be arranged side by side without exposing the terminal frame 21 to the outside. it can.
Moreover, the occupied space is reduced as compared with the case where the covers 12 are provided on all the bodies 11.

In order to separate the bodies 11 which are connected to each other and arranged side by side as described above, a plate-shaped tool C such as the tip of a flat-blade screwdriver may be removed and inserted into the groove 16. The same applies when the cover 12 coupled to the body 11 is removed. (Embodiment 2) In this embodiment, as shown in FIG. 26, the guide protrusion 23c of the release button 23 and the guide groove 11c of the body 11 are omitted from the configuration of Embodiment 1. Also,
The projection size of the locking claw 23d is set to such a degree that it can be pressed into the through hole 18 by utilizing the flexibility (elasticity) of the material of the body 11 and the release button 23. That is, as shown in FIG. 27A, the release button 23 is inserted into the through hole 1 from the outside of the body 11.
8 and pushes the release button 23 into the body 11 with a strong force in a state where the guide surface 23e is in contact with the peripheral edge of the through hole 18, the through hole 18 slightly expands due to the force from the guide surface 23e. Finally, as shown in FIG. 27 (b), the locking claw 2
3d is inserted into the body 11.
When the locking claw 23 is inserted into the body 11, the through hole 1
8 returns to its original size due to the flexibility of the material, and the locking claw 23
The locking surface 23f of d can come into contact with the inner peripheral surface of the body 11 to prevent the release button 23 from coming off.

By adopting such a structure, rattling occurs when operating the release button 23 as compared with the first embodiment, but it is necessary to assemble the release button 23 from the inside of the body 11 during assembly. No release button 23
The assembly work of is easy. That is, the release button 23 can be assembled from the outside of the body 11 with the terminal frame 21 and the lock spring 22 attached to the body 11, and the assembling work is facilitated. Since other configurations are the same as those in the first embodiment, the description thereof will be omitted.

(Embodiment 3) In this embodiment, FIGS.
As shown in FIG. 3, the terminal frame 21 is provided with four holding claws 21b and the holding grooves 11b are formed at four positions of the body 11, which is different from the first embodiment. That is, in the first embodiment, since the holding claws 21b are provided on both side edges of one leg of the terminal frame 21, only two holding claws 21b are provided, but in the present embodiment, both side edges of each leg of the terminal frame 21 are provided. The number of the holding claws 21b is four, and the number of the holding claws 21b is four, and the holding grooves 11b are also provided at four positions. By fixing the body 11 and the terminal frame 21 at four places in this way, the bonding strength between the two is increased. Other configurations are similar to those of the first embodiment.

[0026]

According to the invention of claim 1, a guide projection is provided on one surface of an intermediate portion of the release button in the advancing / retracting direction, and a guide groove for engaging the guide projection and guiding the release button is formed on the inner surface of the case. Since the release button is formed, the guide groove guides the guide protrusion when the release button moves forward and backward, and the release button is supported at two points of the peripheral edge of the through hole and the guide groove. As a result, there is an advantage that the release button moves smoothly without wobbling and the operation feeling is improved.

According to a second aspect of the present invention, a locking claw is provided on one surface of the release button in an intermediate portion in the forward / backward direction, and an inclined guide surface is formed on one side surface of the locking claw in the forward / backward direction of the release button. Then, at least one of the peripheral part of the through hole and the locking claw is flexible so that the locking claw of the release button can be introduced into the case while the guide surface is in contact with the peripheral part of the through hole. The release button is formed from a material, and the protrusion size of the locking claw from one surface of the release button is set so that it can contact the peripheral portion of the through hole on the inner peripheral surface of the case. By press-fitting into the through hole, the release button can be easily attached to the case. That is, if the release button is press-fitted from the outside of the case after the terminal frame and the lock spring are installed in the case and the release button is attached, the tip of the release button will come into contact with the locking spring lock piece and fall off. There is an advantage that the release button can be easily assembled. Moreover, since the release button is attached from the outside of the case, even a small terminal block can be easily handled.

According to the third aspect of the present invention, since the erroneous operation preventing rib is provided around the through hole in the outer surface of the case,
It is possible to prevent the release button from being pushed into the case. For example, when installing the terminal block in the equipment, the release button is received by receiving the electric wire connected to the terminal block with the misoperation prevention rib. Has the advantage that it can be prevented from being pushed in.

According to a fourth aspect of the present invention, a part of the case is formed by a body whose one surface is open, and a holding claw provided on a side edge of the terminal frame is pressed against the inner peripheral surface of the body, and the holding claw is opened in the body. Since the side edge on the side is substantially parallel to the opening surface and the side edge on the bottom surface side of the body is an inclined surface that is inclined so as to reduce the projecting dimension toward the bottom surface of the body, by pressing the terminal frame into the body Since the holding claws are pressed against the body and temporarily held, there is an advantage that the terminal frame can be prevented from falling off even in the state where the case is opened during the assembly.

According to a fifth aspect of the present invention, a part of the case is formed by a body having an opening on one side, and a connecting projection is provided on either one of the opening side of the body and the opposite side of the one side. Since the connecting hole into which the connecting protrusion is press-fitted is formed on the other side, the plurality of bodies can be connected to each other by sequentially connecting the connecting protrusion and the connecting hole for the plurality of bodies. effective. Here, since the opening surface of the body is closed by another body, 1
It suffices to provide a member that closes the opening surface only for each body, and it is possible to reduce the occupied space of the same number of bodies as compared with the case where a member that closes the opening surface is provided for all the bodies. There is an advantage that you can. Moreover, the bodies are joined together by press-fitting the connecting projections into the connecting holes, and the removal groove is formed at a point on the outer peripheral surface on the opening side of the body so that the plate-shaped tool can be inserted while the bodies are connected. Therefore, the body in the coupled state can be easily separated by inserting a tool such as a flat-blade screwdriver into the removal groove and prying. By attaching and detaching the body in this manner, there is an advantage that an arbitrary number of terminal blocks can be provided.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a first embodiment.

FIG. 2 is a front view of the first embodiment with a cover removed.

FIG. 3 is a plan view of the first embodiment with a cover removed.

4 is a sectional view taken along line XX of FIG.

FIG. 5 is a front view of the body used in the first embodiment.

FIG. 6 is a plan view of a body used in the first embodiment.

FIG. 7 is a bottom view of the body used in the first embodiment.

8 is a partially cutaway side view taken along the line XX of FIG.

9 is a partially cutaway side view taken along the line YY of FIG.

10 is a sectional view taken along line ZZ of FIG.

FIG. 11 is a front view of a cover used in the first embodiment.

FIG. 12 is a partially cutaway side view of the cover used in the first embodiment.

13 is a front view of the terminal frame used in Example 1. FIG.

14 is a side view of the terminal frame used in Example 1. FIG.

15 is a bottom view of the terminal frame used in Example 1. FIG.

16 is a cross-sectional view of a main part of a terminal frame used in Example 1. FIG.

FIG. 17 is a schematic sectional view of a main part of the first embodiment.

FIG. 18 is a front view of a release button used in the first embodiment.

FIG. 19 is a side view of the release button used in the first embodiment.

FIG. 20 is a plan view of a release button used in the first embodiment.

FIG. 21 is a bottom view of the release button used in the first embodiment.

FIG. 22 is a cross-sectional view of a main part of the first embodiment.

FIG. 23 is a cross-sectional view showing a comparative example with respect to the function of the incorrect operation preventing rib of the first embodiment.

FIG. 24 is a front view showing a usage example of the first embodiment.

FIG. 25 is a plan view showing a usage example of the first embodiment.

FIG. 26 is an exploded perspective view showing a second embodiment.

FIG. 27 is an explanatory diagram of the operation of the second embodiment.

FIG. 28 is an exploded perspective view showing a third embodiment.

FIG. 29 is a front view showing a terminal frame used in Example 3;

[Explanation of symbols]

 10 Case 11 Body 11c Guide groove 13 Connection protrusion 14 Connection hole 16 Removal groove 17 Wire insertion hole 18 Through hole 19 Misoperation prevention rib 21 Terminal frame 21b Holding claw 21c Inclined surface 22 Lock spring 22a Contact portion 22b Locking piece 23c Release button 23c Guide protrusion 23d Locking claw 23e Guide surface

Claims (5)

[Claims] 1. A terminal frame housed in a case, a locking piece having elasticity in a direction of approaching one surface of the terminal frame, and a contact portion, and a wire to be introduced into the case through a wire insertion hole opened in the case. A lock spring sandwiched between the lock piece and the contact portion and the terminal frame, and withdrawal to and from the through hole formed in the partition wall of the case with one end abutting the lock piece and the other end protruding to the outer surface of the case. It is equipped with a release button that is freely inserted and that bends the locking piece in the direction of pulling it away from the one surface of the terminal frame when the other end is pushed into the case, and the locking piece and the contact part pass through the wire insertion hole. The lock pieces are arranged in order in the direction in which the electric wire is introduced into the case, and the locking piece is a direction in which the distance from the one surface of the terminal frame is reduced toward the direction in which the electric wire is introduced so that the leading edge engages with the introduced electric wire. Tilted to the middle of the release button A terminal block characterized in that a guide projection is provided on one surface, and a guide groove is formed on the inner surface of the case to guide the release button by engaging with the guide projection. 2. A terminal frame housed in a case, a locking piece having elasticity in a direction to approach one surface of the terminal frame, and a contact portion, and a wire to be introduced into the case through a wire insertion hole opened in the case. A lock spring sandwiched between the lock piece and the contact portion and the terminal frame, and withdrawal to and from the through hole formed in the partition wall of the case with one end abutting the lock piece and the other end protruding to the outer surface of the case. It is equipped with a release button that is freely inserted and that bends the locking piece in the direction of pulling it away from the one surface of the terminal frame when the other end is pushed into the case, and the locking piece and the contact part pass through the wire insertion hole. The lock pieces are arranged in order in the direction in which the electric wire is introduced into the case, and the locking piece is a direction in which the distance from the one surface of the terminal frame is reduced toward the direction in which the electric wire is introduced so that the leading edge engages with the introduced electric wire. Tilted to the middle of the release button Has a locking claw protruding from one surface of the release button, and the side surface on the one end side is a guide surface that inclines toward the one end so as to reduce the protruding size. The side surface on the other end side is set so as to be able to come into contact with a part of the inner peripheral surface of the case at the peripheral edge of the through hole. At least one of the peripheral portion of the through hole in the case and the locking claw is made of a flexible material so that the retaining claw can be introduced inside the case. Terminal block. 3. The terminal block according to claim 1 or 2, wherein an erroneous operation preventing rib is provided so as to project around the through hole on the outer surface of the case. 4. The case is provided with a body whose one surface along the introduction direction of the electric wire is open, and at the side edge of the terminal frame, a holding claw which is in pressure contact with an inner peripheral surface intersecting with the opening surface of the body is projectingly provided. Is characterized in that the side edge on the opening side of the body is substantially parallel to the opening surface, and the side edge on the bottom surface side of the body is an inclined surface which is inclined toward the bottom surface of the body so as to reduce the projecting dimension. The terminal block according to claim 1 or 2. 5. The case is provided with a body having an opening on one surface extending in the introduction direction of the electric wire, and a connecting protrusion is provided on a peripheral portion of one of the opening-side surface of the body and the opposite surface of the one surface, and the other. The peripheral part of the body has a connecting hole into which the connecting protrusion provided on the other body is press-fitted, and a plate-shaped tool is inserted in the main part of the outer peripheral surface on the opening side of the body with the multiple bodies connected. The terminal block according to claim 1 or 2, wherein an enabling groove is formed.