JP2014212055A - Fuse holder cover and fuse holding unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow for exchange of a fuse holder cover incorporating a fusion checker, for example, or attachment of a fuse holder cover, incorporating a fusion checker, to an existing fuse holder, by allowing easy exchange of each fuse holder cover.SOLUTION: A fuse holder cover 50 to be attached rotatably to a fuse holder 10 includes a pair of connection pieces 55 provided to protrude downward near the end of a cover 51. The pair of connection pieces 55 are provided, respectively, with a protrusion 56 formed on the outer side face and becoming a rotary shaft by being supported pivotally by the fuse holder 10, and an operating portion 57 formed further tip side than the protrusion 56. When pressing the operating portion 57 from both sides, the pair of connection pieces 55 deform elastically so as to approach each other.

Description

  The present invention relates to a fuse holder cover rotatably attached to a fuse holder having a pair of terminal fittings for holding a glass tube fuse, and a fuse holding unit including the fuse holder and the fuse holder cover.

  Conventionally, a glass tube fuse for circuit protection has been installed in a control panel or equipment in order to cut off the current when the value of the current flowing in the wire exceeds a certain value. Such a glass tube fuse is installed, for example, held in a fuse holder.

  There is also known a fuse holder in which an indicator lamp such as an LED is turned on when the fuse is blown so that the blow can be notified.

  For example, in Patent Document 1, a holding arm is supported on a base body of a terminal block so as to be raised and lowered, a tube fuse is loaded on a pair of connection terminals provided inside the base body, and the fuse is reported to the holding arm. The structure which enabled arrangement | positioning of the fusing checker of is disclosed. According to this Patent Document 1, since the fusing checker is configured as an independent unit part and can be integrally press-fitted and connected using a groove provided in a holding arm of a terminal block with a fuse, It is said that a terminal block with a fuse can be added as an additional feature to easily add a display function when the fuse is blown.

Japanese Patent Laid-Open No. 11-273545

  However, since the configuration described in Patent Document 1 is a configuration in which a fusing checker is added to the upper part of the rotating member (holding arm), the size is larger than that in which the fusing checker is built in the rotating member. Thus, there is a problem that the manufacturing cost also increases.

  In addition, in the structure of patent document 1, when a fusing checker is built in a rotation member, there exists a problem that a fusing checker cannot be additionally equipped to the terminal block with a fuse already installed.

  Therefore, the present invention enables replacement of the rotating member for each unit, for example, replacement of a rotating member with a built-in fusing checker or a rotating member with a fusing checker built into an existing fuse holder. It is an object of the present invention to provide a structure that can be attached, suppresses an increase in size and manufacturing cost, and easily adds a fusing checker to an existing terminal block.

  The present invention has been made to solve the above-described problems, and is characterized by the following.

(Claim 1)
The fuse holder cover according to claim 1 is a fuse holder cover that is rotatably attached to a fuse holder having a pair of terminal fittings for holding a glass tube fuse, and a cover portion that covers an upper surface of the fuse holder; A holding portion that protrudes downward in the vicinity of the middle portion of the cover portion and can hold the glass tube fuse, and is provided to protrude downward in the vicinity of the end portion of the cover portion so as to face each other. A pair of connection pieces, wherein the pair of connection pieces is formed on the outer surface with a projection that is pivotally supported by the fuse holder and is formed on the front side with respect to the projection. When the operation portion is pressed from both sides, the pair of connection pieces are elastically deformed in a direction approaching each other.

(Claim 2)
The invention described in claim 2 has the following features in addition to the features of the invention described in claim 1 described above.
That is, the operation part is formed by bending the tip of the connection piece into a substantially L shape.

(Claim 3)
The invention described in claim 3 is characterized by the following points in addition to the characteristics of the invention described in claim 1 or 2.
That is, a slit is formed in the cover part substantially in parallel with the connection piece.

(Claim 4)
Invention of Claim 4 is a fuse holding unit provided with the fuse holder cover in any one of Claims 1-3, and the fuse holder which can attach this fuse holder cover, Comprising: It is characterized by.
That is, the fuse holder includes a pair of wall portions in which fitting holes for fitting the protrusions are formed, and a guide groove is formed on an inner surface of the wall portion from an edge toward the fitting hole. It is formed.

  The invention according to claim 1 is as described above, and in the fuse holder cover that is rotatably attached to the fuse holder, the fuse holder cover includes a pair of connection pieces provided to project downward in the vicinity of the end of the cover portion, In the pair of connection pieces, a projection that is pivotally supported by the fuse holder and formed as a rotating shaft is formed on the outer surface, and an operation portion is formed on the tip side of the projection, and the operation portion is viewed from both sides. When the pressing operation is performed, the pair of connection pieces are elastically deformed in a direction approaching each other. That is, since the pair of connecting pieces provided with the rotation shaft is elastically deformed by picking the operation part from both sides, the fuse holder cover can be easily attached to and detached from the fuse holder by performing such an operation. .

  Therefore, for example, a display function at the time of fuse blowing can be easily added by attaching a fuse holder cover provided with a notification means such as an LED that lights when the fuse is blown to the fuse holder. Further, it is easy to replace the fuse holder cover provided with the notification means and the fuse holder cover not provided with the notification means. According to such a configuration, an increase in size and manufacturing cost can be suppressed as compared with a configuration in which a fusing checker is added as a separate member.

  The invention according to claim 2 is as described above, and the operation portion is formed by bending the tip of the connection piece into a substantially L shape. According to such a configuration, when the fuse holder cover is rotated in the upright direction and opened with respect to the fuse holder, the operation portion extends in a direction protruding out of the fuse holder. The part can be easily operated.

  The invention according to claim 3 is as described above. Since the slit is formed in the cover portion substantially in parallel with the connection piece, the connection piece is elastically deformed in a direction approaching each other. It is easy to be elastically deformed by using the slit, and the attachment and detachment of the fuse holder cover can be further facilitated.

  The invention according to claim 4 is as described above, and the fuse holder includes a pair of wall portions in which fitting holes for fitting the protrusions are formed. Since the guide groove is formed from the edge toward the fitting hole, when the fuse holder cover is attached to the fuse holder (that is, the protrusion serving as the rotation shaft is fitted into the fitting hole of the fuse holder). At the same time, it can be easily mounted using a guide groove.

It is an external appearance perspective view of the fuse holding unit which opened the fuse holder cover. It is an external appearance perspective view of the fuse holding unit which closed the fuse holder cover. It is an external appearance perspective view of a fuse holder. It is a disassembled perspective view of a fuse holder. It is a disassembled side view of a fuse holder. It is (a) top view, (b) front view, (c) side view of a fuse holder. It is XX sectional drawing of a fuse holder. It is XX sectional drawing which shows a mode that an electric wire is attached or detached to a fuse holder. It is an external appearance perspective view of a fuse holder cover. It is (a) top view, (b) front view, (c) side view of a fuse holder cover.

Embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the fuse holding unit according to the present embodiment includes a fuse holder 10 used for holding a glass tube fuse 70 installed in a control panel or equipment, and a fuse holder 10. And a fuse holder cover 50 that is rotatably attached to the housing.

  As shown in FIGS. 4 and 5, the fuse holder 10 includes a pair of terminal fittings 11 for holding the glass tube fuse 70 and a case body 20 formed of an insulator for supporting the pair of terminal fittings 11 and the like. A terminal cover 35 attached to the case body 20 so as to cover the pair of terminal fittings 11, a biasing member 40 built in the case body 20 so as to face the pair of terminal fittings 11, respectively, And an operation member 46 attached to the case body 20 so as to be able to be pushed in to operate the urging member 40.

  As shown in FIG. 3, the pair of terminal fittings 11 are arranged side by side in the longitudinal direction, and each terminal fitting 11 holds both ends of the glass tube fuse 70. As shown in FIG. 4, each terminal fitting 11 includes a holding portion 12 that holds the glass tube fuse 70 and a prismatic embedded portion 14 that is provided continuously to the holding portion 12.

  The holding part 12 is formed by a pair of standing pieces arranged so as to face each other, and a concavely curved part into which the end of the glass tube fuse 70 is fitted is formed at the center of each standing piece. . Therefore, when the end portion of the glass tube fuse 70 is inserted from above the holding portion 12, the pair of standing pieces are elastically deformed in the spreading direction, and the end portion of the glass tube fuse 70 can be inserted to the concave curved portion. It has become. When the end portion of the glass tube fuse 70 is inserted to the concave curved portion, the pair of standing pieces pinch and fix the vicinity of the end portion of the glass tube fuse 70 from both sides. The holding portion 12 is provided with an end face support piece 13 that supports the end face of the glass tube fuse 70, and the end face support piece 13 supports the end face of the glass tube fuse 70 so that it is narrowed by the holding portion 12. The glass tube fuse 70 that is held and fixed can be prevented from falling off.

  The embedded portion 14 is a portion embedded in a recess 24 (described later) of the case body 20. The embedded portion 14 is embedded in the concave portion 24 of the case body 20 and covered with the terminal cover 35 from above, whereby the terminal fitting 11 is fixed to the case body 20. The embedded portion 14 is formed in a prismatic shape, and an urging member 40 can be disposed therein. Further, the top surface of the embedded portion 14 constitutes an electric wire contact portion 15 that contacts the electric wire 80, and the electric wire 80 is pressed against the electric wire contact portion 15 by the urging member 40. 11 is electrically connected.

  The case body 20 is a housing that incorporates the terminal fittings 11 and the like described above, and is formed of an insulating material such as a synthetic resin. As shown in FIG. 6 and the like, the case body 20 is configured such that the terminal fitting 11 can be exposed and fixed on the upper surface, and includes a wall portion 21 that covers a side portion of the exposed terminal fitting 11. A fitting hole 22 for attaching the fuse holder cover 50 is formed in the upper end corner of the wall portion 21. A guide groove 23 that gradually decreases in width from the edge toward the fitting hole 22 is formed on the inner side surface of the wall portion 21, and the projection 56 of the fuse holder cover 50 is formed by the guide groove 23. It can be guided to the fitting hole 22.

  On the upper surface of the case body 20, recessed portions 24 for embedding the embedded portions 14 of the terminal fittings 11 are provided at two positions in the front and rear directions. Terminal cover mounting portions 25 for inserting the insertion leg portions 38 are formed at the four corners of the recess 24.

  Further, insertion holes 26 for inserting the electric wires 80 are formed through the front and rear end faces of the case body 20 as viewed in the longitudinal direction. As shown in FIG. 7 and the like, the insertion hole 26 penetrates to the inside of the recess 24 and is formed so that the electric wire 80 inserted into the insertion hole 26 can be introduced into the inside of the recess 24. The end edge of the insertion hole 26 is a cylindrical portion 27 protruding in a cylindrical shape as shown in FIG.

  Further, on the side surface of the case body 20, a first connection portion 28 is provided on one side, and a second connection portion 29 is provided on the other side. The first connection portion 28 and the second connection portion 29 are formed in shapes that can be engaged with each other. By engaging the first connection portion 28 and the second connection portion 29, two adjacent case bodies are formed. 20 can be connected. Specifically, the second connection portion 29 includes a dovetail groove portion 30 that can be engaged by sliding the first connection portion 28 from above, and the first connection portion 28 corresponds to the dovetail groove portion 30. Since it protrudes as a tenon, it is formed so that the case body 20 can be coupled and uncoupled by sliding up and down while the side surfaces of the two case bodies 20 are in close contact with each other.

  A rail attachment portion 31 for fitting and fixing to a DIN rail or the like is provided at the lower portion of the case body 20. For this reason, the fuse holder 10 can be attached to a desired location by fitting and fixing the rail attachment portion 31 to a DIN rail or the like.

  The terminal cover 35 is attached to the case body 20 so as to cover the embedded portion 14 of the terminal fitting 11 accommodated in the recess 24 of the case body 20, and as shown in FIG. A portion 36 and insertion leg portions 38 projecting downward from the four corners of the covering portion 36 are provided. The insertion leg portion 38 is a portion to be inserted into the terminal cover mounting portion 25 of the case body 20, and the terminal cover 35 is attached to the case body 20 by inserting the insertion leg portion 38 into the terminal cover mounting portion 25. Can be. Further, the covering portion 36 is a portion that covers the terminal fitting 11 and the operation member 46 from above so that the terminal fitting 11 and the operation member 46 are not detached from the case body 20. An opening 37 is formed in the center of the covering portion 36 to expose the upper surface of a prismatic portion 47 (described later) of the operation member 46.

  The urging member 40 is for pressing the electric wire 80 introduced into the recess 24 from the insertion hole 26 against the electric wire contact portion 15 of the terminal fitting 11 and urging the operation member 46 upward. The urging member 40 is a leaf spring as shown in FIG. 4 and the like, and is housed inside the embedded portion 14 of the terminal fitting 11. In the present embodiment, two urging members 40 are arranged on both sides of a leg portion 49 (described later) of the operation member 46 that enters the embedded portion 14 when viewed from the center. Thus, by providing two urging members 40 corresponding to the insertion holes 26, the electric wires 80 inserted from the insertion holes 26 can be separately pressed against the electric wire contact portion 15 of the terminal fitting 11. Yes.

  The urging member 40 includes a base portion 41 having a mounting surface that contacts the bottom surface of the embedded portion 14, a first arm portion 42 extending from one end of the base portion 41, and extending from the other end of the base portion 41. A second arm portion 44. The first arm portion 42 and the second arm portion 44 extend obliquely upward so as to be substantially parallel to each other, and the insertion direction is such that the tip of the electric wire 80 inserted from the insertion hole 26 contacts the inclined surface. Inclined along. For this reason, when the electric wire 80 is inserted from the insertion hole 26, the first arm portion 42 and the second arm portion 44 are elastically deformed downward so that the electric wire 80 can pass therethrough. The electric wire 80 that has passed in this way is sandwiched between the upper ends of the first arm portion 42 and the second arm portion 44 and the electric wire contact portion 15 of the terminal fitting 11, and is not easily pulled out. That is, the urging member 40 is formed to urge the electric wire 80 inserted into the insertion hole 26 in the direction of the terminal fitting 11 so that the electric wire 80 is sandwiched and fixed together with the terminal fitting 11. Yes.

  Note that receiving portions 43 and 45 are provided in the middle of the first arm portion 42 and the second arm portion 44, respectively. The receiving portions 43, 45 are provided at positions that come into contact with the bottom surface of the prismatic portion 47 of the operation member 46.

  The operation member 46 is a member that is arranged to be movable up and down inside the recess 24 of the case body 20, and includes a square columnar prism portion 47 and a leg portion 49 that protrudes from the bottom surface of the prism portion 47. ing. As described above, the lower surface of the prism portion 47 is in contact with the receiving portions 43 and 45 of the urging member 40, whereby the operation member 46 is urged upward by the urging member 40 (or the operation is performed). The member 46 is placed on the biasing member 40). When viewed from the opposite side, when the operation member 46 is pushed in, the bottom surface of the prism portion 47 of the operation member 46 presses the receiving portions 43 and 45 downward, and the operation member 46 is pushed in. Thus, the urging member 40 pressed by the operation member 46 is elastically deformed. When the electric wire 80 is nipped and fixed by the urging member 40 and the terminal fitting 11, the urging member 40 is elastically deformed by pushing the operating member 46 to release the nipping and fixing of the electric wire 80. It can be done.

  Note that an engaging recess 48 for receiving the screw driver 90 and the like is formed on the upper surface of the prismatic portion 47 of the operation member 46. Therefore, the operation member 46 is formed to be easily pushed in against the urging force of the urging member 40 by engaging the screw driver 90 or the like with the engaging recess 48 and pushing from above.

  In particular, the operation member 46 of the present embodiment can be pushed in the direction orthogonal to the installation surface. For this reason, even when the fuse holder 10 is fixed using the rail mounting portion 31, the operation member 46 can be pressed by the screw driver 90 or the like while being fixed.

  FIG. 8 is a diagram showing how the electric wire 80 is attached to and detached from the fuse holder 10. As shown in FIG. 8A, when the electric wire 80 is attached to the fuse holder 10, it is only necessary to insert the electric wire 80 from the insertion hole 26. The electric wire 80 inserted from the insertion hole 26 is inserted by pushing away the urging member 40, and is clamped and fixed in the recess 24 of the case body 20. Thereby, as FIG.8 (b) shows, the electric wire 80 and the terminal metal fitting 11 are electrically connected.

  If the urging member 40 cannot be inserted because the electric wire 80 is thin, the electric wire 80 can be inserted without being affected by the urging member 40 by inserting the electric wire 80 with the operation member 46 pushed from above. Can be plugged in.

  Further, when the electric wire 80 is removed from the fuse holder 10, as shown in FIG. 8C, the screw driver 90 or the like is engaged with the engagement concave portion 48 of the operation member 46 and pushed from above, thereby energizing. The member 40 is elastically deformed downward to release the pinching and fixing of the electric wire 80 by the urging member 40 and the terminal fitting 11. Then, after releasing the pinching and fixing, the electric wire 80 may be pulled out. Note that the drawn electric wire 80 and the fuse holder 10 are not subjected to external changes due to soldering or caulking, and thus can be reused as they are.

  As shown in FIG. 1, the fuse holder cover 50 that is rotatably attached to the fuse holder 10 is rotated in the upright direction to open the inside of the fuse holder 10, thereby replacing the glass tube fuse 70. Is formed so as to be easily performed.

  As shown in FIGS. 9 and 10, the fuse holder cover 50 includes a cover portion 51 that covers the upper surface of the fuse holder 10, a holding portion 54 that protrudes downward near the middle portion of the cover portion 51, and a cover portion 51. A knob 53 provided at one end, an engaging part 58 provided to protrude below the knob 53, and provided to protrude downward at the other end opposite to the side on which the engaging part 58 is provided. The pair of connecting pieces 55 is a synthetic resin member formed integrally.

  The cover portion 51 is a plate-like member that is formed substantially equal to the planar shape of the fuse holder 10. As shown in FIG. 9, a slit 52 is formed in the end portion of the cover portion 51 in the longitudinal direction substantially parallel to the connection piece 55. The slits 52 are formed at two locations inside each of the pair of connection pieces 55, and are formed by cutting longer than the connection pieces 55.

  The holding portion 54 is a bowl-shaped portion that detachably holds the glass tube fuse 70, and is attached to the holding portion 54 by closing the fuse holder cover 50 with the glass tube fuse 70 attached to the holding portion 54. A glass tube fuse 70 is attached to the terminal fitting 11 of the fuse holder 10.

  The knob 53 is a part for picking and operating the fuse holder cover 50 when opening and closing it. In the present embodiment, although not shown in particular, a notification means using LEDs, neon or the like is disposed inside the knob 53, and when the fuse is blown, the notification means is lit to notify the fusing. It has become.

  The engaging part 58 is a part for engaging with the fuse holder 10 when the fuse holder cover 50 is closed. The engaging portion 58 includes a protrusion 59 that fits into the fitting hole 22 of the fuse holder 10, and the protrusion 59 engages with the fitting hole 22 when the fuse holder cover 50 is closed. The holder cover 50 is not intended to be opened unintentionally. The engagement between the protrusion 59 and the fitting hole 22 can be easily released by pulling up the fuse holder cover 50 while holding the knob 53. The fuse holder cover 50 is lifted and rotated in the standing direction. By doing so, the fuse holder cover 50 can be opened as shown in FIG.

  The pair of connection pieces 55 is a part for providing a rotation fulcrum of the fuse holder cover 50. As shown in FIG. 10 and the like, the pair of connection pieces 55 are formed by arranging thin plate-like members having an L shape in a side view so as to face each other.

  Projections 56 are formed on the outer surfaces of the pair of connection pieces 55 as shown in FIG. The protrusion 56 forms a rotating shaft for rotating the fuse holder cover 50 by being fitted into the fitting hole 22 of the fuse holder 10. The protrusion 56 protrudes larger than the protrusion 59 of the engaging portion 58 and cannot be easily removed from the fitting hole 22 like the protrusion 59 of the engaging portion 58.

  In addition, an operation portion 57 is formed on the pair of connection pieces 55 on the distal end side with respect to the protrusion 56 described above. The operation portion 57 is for elastically deforming the pair of connection pieces 55 in a direction approaching each other, and is formed by bending the tip of the connection piece 55 into a substantially L shape. As shown in FIG. 1, when the fuse holder cover 50 is rotated in the upright direction and opened with respect to the fuse holder 10, the operation unit 57 is formed by bending the L-shaped portion into the substantially L shape. The fuse holder 10 protrudes outside the wall portion 21.

  When removing the fuse holder cover 50 from the fuse holder 10, as shown in FIG. 1, with the fuse holder cover 50 rotated in the upright direction and opened with respect to the fuse holder 10, the operation unit 57 is moved from both sides. Pick and operate. As described above, the pair of connection pieces 55 are formed in a thin plate shape, and the slits 52 are formed inside the pair of connection pieces 55. The pair of connection pieces 55 bend and elastically deform in a direction approaching each other. When the pair of connection pieces 55 are elastically deformed in a direction approaching each other, the protrusions 56 provided on the outside of the connection pieces 55 are retracted inward, so that the protrusions 56 can be removed from the fitting holes 22. If the fuse holder cover 50 is pulled out in this state, the fuse holder cover 50 can be easily removed from the fuse holder 10.

  On the other hand, when attaching the fuse holder cover 50 to the fuse holder 10, the projection 56 is engaged with the fitting hole 22 in a state where the operation portion 57 is grasped from both sides and the pair of connection pieces 55 are elastically deformed. The fuse holder cover 50 may be inserted. At this time, since the guide groove 23 is formed from the edge toward the fitting hole 22 on the inner surface of the pair of wall portions 21 in which the fitting hole 22 is formed, the protrusion 56 is formed along the guide groove 23. The protrusion 56 and the fitting hole 22 can be easily engaged by sliding.

  As described above, according to the present embodiment, in the fuse holder cover 50 that is rotatably attached to the fuse holder 10, the pair of connection pieces 55 that protrude downwardly in the vicinity of the end portion of the cover portion 51 are provided. The pair of connection pieces 55 includes a projection 56 that is pivotally supported by the fuse holder 10 and serves as a rotation shaft, and an operation portion 57 is formed on the tip side of the projection 56. When the operation portion 57 is pressed from both sides, the pair of connection pieces 55 are elastically deformed in a direction approaching each other. That is, since the pair of connection pieces 55 having the rotation shaft is elastically deformed by picking the operation portion 57 from both sides, the fuse holder cover 50 can be easily attached to and detached from the fuse holder 10 by performing such an operation. Can be made.

  Therefore, for example, a display function at the time of fuse blow can be easily added by attaching the fuse holder cover 50 provided with a notification means such as an LED that lights when the fuse is blown to the fuse holder 10 afterwards. Further, it is easy to replace the fuse holder cover 50 provided with the notification means and the fuse holder cover 50 not provided with the notification means. According to such a configuration, an increase in size and manufacturing cost can be suppressed as compared with a configuration in which a fusing checker is added as a separate member.

  The operation portion 57 is formed by bending the tip of the connection piece 55 into a substantially L shape. According to such a configuration, when the fuse holder cover 50 is rotated in the upright direction and opened with respect to the fuse holder 10, the operation portion 57 is extended in a direction protruding from the fuse holder 10. Therefore, the operation unit 57 can be easily operated.

  Further, since the slit 51 is formed in the cover portion 51 substantially in parallel with the connection piece 55, when the connection piece 55 is elastically deformed in a direction approaching each other, it is elastically deformed using the slit 52. The fuse holder cover 50 can be easily attached and detached.

  The fuse holder 10 includes a pair of wall portions 21 in which fitting holes 22 for fitting the protrusions 56 are formed, and the fitting hole 22 is formed on an inner surface of the wall portion 21 from an edge. Since the guide groove 23 is formed toward the front, when the fuse holder cover 50 is attached to the fuse holder 10 (that is, when the protrusion 56 serving as the rotation shaft is fitted into the fitting hole 22 of the fuse holder 10). ), And can be easily attached using the guide groove 23.

DESCRIPTION OF SYMBOLS 10 Fuse holder 11 Terminal metal fitting 12 Holding part 13 End surface support piece 14 Buried part 15 Electric wire contact part 20 Case body 21 Wall part 22 Fitting hole 23 Guide groove 24 Recess 25 Terminal cover mounting part 26 Insertion hole 27 Cylindrical part 28 1st Connection part 29 Second connection part 30 Dovetail part 31 Rail attachment part 35 Terminal cover 36 Cover part 37 Opening 38 Inserting leg part 40 Energizing member 41 Base part 42 First arm part 43 Receiving part 44 Second arm part 45 Receiving part 46 Operation Member 47 Square column part 48 Engagement concave part 49 Leg part 50 Fuse holder cover 51 Cover part 52 Slit 53 Pick part 54 Holding part 55 Connection piece 56 Protrusion 57 Operation part 58 Engagement part 59 Protrusion 70 Glass tube fuse 80 Electric wire 90 Screw driver

Claims (4)

A fuse holder cover rotatably attached to a fuse holder having a pair of terminal fittings for holding a glass tube fuse,
A cover portion covering the upper surface of the fuse holder;
A holding part that is provided projecting downward in the vicinity of the middle part of the cover part and can hold the glass tube fuse;
A pair of connecting pieces provided so as to protrude downward in the vicinity of the end of the cover part and arranged to face each other;
With
In the pair of connection pieces, a projection that is pivotally supported by the fuse holder and formed as a rotation shaft is formed on the outer surface, and an operation portion is formed on the tip side of the projection,
The fuse holder cover, wherein when the operation portion is pressed from both sides, the pair of connection pieces are elastically deformed in a direction approaching each other.   The fuse holder cover according to claim 1, wherein the operation portion is formed by bending the tip of the connection piece into a substantially L shape.   The fuse holder cover according to claim 1 or 2, wherein a slit is formed in the cover portion substantially parallel to the connection piece. A fuse holding unit comprising the fuse holder cover according to any one of claims 1 to 3 and a fuse holder to which the fuse holder cover can be attached,
The fuse holder includes a pair of wall portions formed with fitting holes for fitting the protrusions.
A fuse holding unit, wherein a guide groove is formed on an inner surface of the wall portion from an end edge toward the fitting hole.

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