JP4918434B2 - Cover plate fixing structure - Google Patents

Description

  The present invention relates to a fixing structure in which, for example, a substrate such as a back plate of a fan heater is covered with a covering plate such as an air filter and is detachably fixed.

  For example, a cover plate (for example, an air filter) is detachably attached to a substrate (for example, a back plate of a fan heater), as in the case where an air filter is coated on the back plate of a fan heater and is detachably fixed. As a fixing structure to be installed and fixed, a fixing member such as a screw, a rotary locking tool, and a pin using deformation of resin is employed.

  In screwing, a screw hole is provided on the substrate side, a screw insertion hole is provided on the cover plate side, and a screw as a fixing member is inserted into the screw insertion hole and fixed by being screwed into the screw hole. In the rotary locking device, a locking tool with a locking projection protruding from the tip of the shaft is inserted from the coating plate side into a locking hole provided to communicate with the coating plate and the substrate, and the back plate After the shaft is inserted into the locking hole, the shaft is rotated by a predetermined angle, so that the locking protrusion is locked in the locking hole of the back plate in a retaining state.

In the case of utilizing the deformation of the resin, a resin pin having a slightly larger diameter than the through hole is forcibly used as a fixing member in the through hole provided to communicate with the frame body and the back plate of the air filter. The resin pins are inserted and elastically expanded in the through holes of the back plate, thereby fixing both.
JP-A-9-142077 Japanese Patent No. 3777715

  However, in the fixing structure as described above, fixing members such as screws, rotary fasteners, and resin pins are separate parts from the substrate and the cover plate. With the covering plate positioned on the substrate, the fixing member must be handled only with the other hand, and the fixing operation is difficult. In addition, there is a problem that the fixing member is lost when the cover plate is removed from the substrate at the time of replacement of the air filter or maintenance inspection. In order to prevent loss, it is conceivable that the fixing member is provided integrally with the cover plate or the substrate, but this requires other auxiliary parts such as a split pin and an E-ring. Further, a jig for utilizing the above is required, the number of parts increases, the structure becomes complicated, and the entire fixing structure becomes large.

  In addition to the above problems, when using screws, the screw head of the screw being screwed into the screw hole may be damaged due to overtightening of the screw. There is an inconvenience that requires the entire repair and replacement.

  In addition, in the fixing structure using deformation of the resin such as insertion of the resin pin into the through hole, the fixing force is lowered due to deterioration of the resin pin due to long-term use, and the covering plate is lifted from the substrate. There is.

  Further, in these fixing structures, since the direction of the fixing member at the time of fixing is not specified, there is a problem that it is difficult for an operator to reliably grasp the fixing state of the cover plate to the substrate by the fixing member.

  According to the present invention, in the “fixing structure of the covering plate in which the covering plate coated on the substrate is detachably fixed by the fixing member”, the fixing member is integrated with the covering plate without increasing the number of parts. It is an object of the present invention to make it possible to prevent loss and to facilitate the work of detaching the cover plate from the substrate by the fixing member.

(1) The covering plate fixing structure according to the first aspect of the present invention is as follows: “The fixing member is a clip hole provided in the covering plate, and is rotatable with respect to the clip hole and in a retaining state. It consists of a plastic clip body to be attached,
A locking hole is provided at a predetermined position of the substrate corresponding to the clip hole,
The clip body includes a clip leg and a lock leg portion that can be inserted continuously through the lock hole, a lock arm portion that is locked into the clip hole by being forcedly inserted, An operation head that can be rotated in a direction in which the locking leg can be locked in a locking state with respect to the locking hole is provided integrally with the shaft .
Each of the locking legs protrudes from the mutually opposing positions in the vicinity of one end of the shaft part, one on each side.
The locking arm portion extends obliquely while being separated from the shaft portion toward the other end of the shaft portion, one on each side from the mutually opposing positions between the locking leg portions. Projecting
The clip hole is opened in one surface of the cover plate and is provided in the center of the long hole through which the pair of locking leg portions can be inserted at the same time, and elastic in the direction in which the pair of locking arm portions are close to each other. A first hole having a shape of a round hole of a size that can be inserted while being deformed, communicated with the first hole, opened to the other surface of the cover plate, and the locking leg and the locking arm portion. It consists of a second hole with a depth that can be accommodated simultaneously,
The locking hole is configured in a shape having a round hole of a size that allows the pair of locking arm portions to be inserted in a natural state at the center of a long hole having the same size and shape as the first hole,
The locking leg can be locked to the round hole of the locking hole in a state where the locking leg is rotated by a predetermined angle by the operation of the operation head after inserting the elongated hole of the locking hole. It is characterized by that.
The technical means operates as follows.
The clip body is an integrally molded resin body having a structure in which a locking leg, a locking arm, and an operation head are provided on the shaft, and the locking leg and the locking arm are forced into the clip hole. By engaging, the locking arm portion is locked (one-way engagement) in the clip hole in a retaining state. As a result, the clip body is attached to the cover plate and is not separated. In this mounted state, the operation head protrudes to the one surface side of the covering body, and the locking leg portion is located on the other surface side of the covering plate, like the locking arm portion.

  Then, the clip hole is aligned with the locking hole, and the locking leg portion of the clip body is inserted through the locking hole. If the operating head protruding from the one surface side of the cover plate after the insertion is rotated in a predetermined direction, the lock legs are locked in the lock holes, and the cover plate is fixed to the substrate.

  The cover plate can be removed from the substrate by rotating the operating head in the direction in which the locking leg is released from the locking hole and removing the locking leg from the locking hole of the substrate. I can do it. After the removal, the clip arm is maintained in a state where it is locked in the clip hole of the cover plate so that the clip body is not detached, so that the clip body does not fall off the cover plate and is not separated.

In addition, the locking leg portion and the locking arm portion are provided in a pair of opposing positions in the vicinity of one end of the shaft portion, respectively, and the pair of locking arm portions are directed from the vicinity of one end of the shaft portion toward the other end. It is formed so as to extend obliquely in a substantially U shape or a substantially V shape. Then, the locking leg portion is inserted into the elongated hole of the first hole together with the locking arm portion. The locking arm portion is forcibly inserted into the round hole while elastically deforming the extension ends in directions close to each other. After insertion, the extension arm side is elastically restored, so that the locking arm portion is round. The one-way engagement is performed on the periphery of the hole in a retaining state, and the hole is accommodated in the second hole of the clip hole together with the locking leg. The cover plate is overlaid on the substrate so that the elongated holes of the first hole correspond to the elongated holes of the first hole in the same direction, the shaft portion is further pushed into the substrate side, and the engaging leg portion is inserted into the second hole of the clip hole. It protrudes from the hole and is inserted through the long hole of the locking hole. After the insertion, if the operating head is rotated so that the protruding direction of the locking leg is displaced from the long hole of the locking hole, the locking leg is prevented from coming off against the round hole of the locking hole. The cover plate is fixed to the substrate.

  To remove the cover plate from the substrate, rotate the operating head again, align the protruding direction of the locking leg with the elongated hole of the locking hole, and then pull the operating head to remove it from the elongated hole. Take it. When the operating head is pulled in the direction in which the clip body is extracted from the clip hole, the locking arm portion of the clip body is locked to the peripheral edge of the round hole of the first hole of the clip hole in a retaining state. Therefore, the clip body does not fall out of the clip hole.

(2) The invention according to claim 2 is the covering plate fixing structure according to claim 1 , wherein the operating head is configured to have a cross-sectional shape that is elongated in the protruding direction of the locking leg. It is possible to check the protruding direction of the locking leg in the posture of the operating head, and when it is positioned at right angles to the direction of the long hole of the locking hole, the cover plate is fixed In the case where they are positioned in parallel, it can be confirmed that they are in a fixed release state.

(3) According to a third aspect of the present invention, there is provided the covering plate fixing structure according to any of the above-mentioned claims , wherein “a disk portion is stretched in a circumferential direction on a base end portion of the operation head of the clip body. And projecting a convex portion on the surface opposite to the operation head,
When the clip body is in a first posture in which the locking leg can be inserted into the clip hole, and the clip body is rotated by 90 degrees in the circumferential direction from the first posture. In each of the two postures, a concave portion into which the convex portion can be fitted is provided at each position around the clip hole to which the convex portion corresponds.
The distance between the locking leg portion and the disc portion is set so as to be approximately equal to the combined length of the locking hole and the clip hole ”. The clip body is provided with a locking leg portion and a locking arm portion on one end side of the shaft portion and an operation head portion and a disc portion on the other end side by integral molding of synthetic resin. It is configured in a different shape. When the cover plate is coated on the substrate, the long hole of the clip hole is aligned with the long hole of the lock hole, and the lock leg portion of the clip body is continuously inserted into the clip hole and the lock hole, the lock leg portion Since the distance between the disk portion and the disc portion is set so as to substantially match the combined length of the locking hole and the clip hole, the peripheral portion of the locking hole of the substrate And the peripheral portion of the clip hole of the cover plate are just sandwiched between the locking leg portion and the disc portion, and the convex portion provided on the disc portion is provided around the clip hole. It fits into the recessed part. This state is the first posture of the clip body and is the posture when the cover plate is removed from the substrate. When the operating head is forcibly rotated from this state, the convex portion is allowed to escape from the concave portion, and the locking leg portion or the disc portion is elastically deformed by the protruding height of the convex portion. Then, when the operation head is turned 90 degrees, the elastic return force causes the convex portion to fit into the other concave portion, so that the attachment of the cover plate to the substrate is completed. You can know by sound. This state is the second posture of the clip body. The first posture and the second posture are maintained unless the operation head is forcibly rotated so that the convex portion is forcibly escaped from the concave portion.

(4) According to a fourth aspect of the present invention, there is provided the covering plate fixing structure according to any of the above-mentioned claims , wherein a pair of supporting legs is provided on the shaft portion closer to the operating head than the locking leg portion. The part protrudes in the same direction as the locking leg, and the distance between the locking leg and the support leg is set to substantially match the thickness of the substrate. When the operating head is rotated and the locking leg is engaged with the locking hole, the peripheral area of the locking hole of the substrate is sandwiched between the locking leg and the support leg.

(5) The invention according to claim 5 is the covering plate fixing structure according to each of the above claims , wherein “the substrate is a back plate of a fan heater, and the covering plate has a filter surface in a rectangular frame. An air filter provided,
Locking hooks are provided at both ends near the upper side of the rectangular frame so as to project obliquely downward, and the locking hooks can be locked at predetermined positions on the back plate corresponding to the locking hooks. Each is provided with a locking hole,
In the state where the locking hook is locked to the locking hole, a supporting hook for receiving the lower side is provided in the vicinity of both ends of the back plate to which the lower side of the rectangular frame corresponds, and The clip hole is provided in the center of the lower side ”, and the structure of the clip body and the clip hole is adopted as the fixing structure for mounting the air filter on the back plate of the fan heater, and the rectangular shape of the air filter The upper side of the frame is fixed by locking the locking hook to the locking hole of the back plate from above, and the lower side of the rectangular frame is fixed by being supported by a support hook provided on the back plate. . In this state, the clip body is inserted into the locking hole and fixed to complete the attachment of the air filter to the back plate of the fan heater. To remove it, the operating head is rotated and the clip body is pulled. Then, the fixing by the clip body is released, and then the rectangular frame is lifted obliquely upward, the locking hook is allowed to escape from the locking hole, and the lower side of the rectangular frame is separated from the support hook.

  As described above, according to the invention according to claim 1, since the clip body is configured to be attached in a retaining state by simply inserting the clip body into the clip hole of the cover plate, without increasing the number of parts, The clip body can be integrally provided on the cover plate without increasing the size. Thereby, since the clip body is not carelessly separated from the cover plate, the clip body is not lost even when the fixing member is not used after the cover plate is removed from the substrate. Further, the restriction on the mounting position due to the size of the fixing member is also reduced.

  Also, after the clip body's locking leg is pushed into the board side and inserted through the locking hole, the locking leg can be locked by simply rotating the operation head on the cover plate in a predetermined direction. If the clip body is pulled after the operating head is rotated again so that the locking leg is in a posture in which the locking leg can be inserted through the locking hole. The locking leg can be removed from the locking hole, and the cover plate can be removed from the substrate. As described above, since the work of detaching the cover plate from the substrate using the fixing member is facilitated, the workability of the work of detaching the cover plate is improved. Even if the clip body is damaged during the work, the damaged clip body can be easily removed from the cover plate or substrate, and only the clip body needs to be replaced. Easy to deal with.

Further , the clip body is one-way engaged with the first hole of the clip hole by elastically deforming a pair of locking arm portions respectively provided at positions facing each other of the shaft portion in a direction close to each other. Therefore, the clip body can be easily attached to the covering plate in a retaining state. Further, since the locking leg and the locking arm can be accommodated in the second hole of the clip hole, the locking leg and the locking arm are placed at predetermined positions on the board when the cover plate is removed from the board. Without being caught, the locking leg portion and the locking arm portion can be prevented from being damaged when the fixing member is not used.

In addition, according to the second aspect of the present invention, it is possible to easily and reliably grasp the fixing state by the operator, so that the workability and the reliability of the work of detaching the cover plate from the substrate are improved.
According to the invention of claim 3 , since the convex part of the disk part fits into the concave part vigorously, it is possible to know the fixing state of the fixing member with a quick response and sound, so that the operator is easier. In addition, the fixing state of the fixing member can be confirmed reliably.

According to the invention of claim 4 , when the covering plate is covered on the substrate and the both are fixed by the clip body, the peripheral area of the locking hole of the substrate is the locking leg portion and the supporting leg portion of the clip body. Therefore, it is possible to stabilize the posture of the clip body in a state where the locking leg is inserted into the locking hole and locked. Therefore, not only when the locking leg is locked to the locking hole, but also when the operating head is turned, the clip body does not wobble and the clip body can be operated in a stable state.

According to the invention of claim 5 , the work of attaching and detaching the air filter to the back plate of the fan heater is facilitated, and the clip body as a fixing member is lost during maintenance and replacement of the air filter. There is no inconvenience.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
The substrate in the embodiment of the present invention is the back plate (3) of the fan heater, and the covering plate is an air filter (4) attached to the back plate (3).

  As shown in FIG. 1, the back plate (3) is provided with a number of air supply ports (31) for sending combustion air into a heater body (not shown). In order to prevent dust from entering the heater body from the air supply port (31), the back plate (3) of the heater body is covered with an air filter (4).

The air filter (4) is a filter composed of a rectangular frame (40) having a size surrounding the area where the air supply port (31) of the back plate (3) is formed, and a wire mesh stretched in the rectangular frame (40). Part (41). The rectangular frame (40) is divided into left and right parts at the longitudinal center line part (42), and the filter parts (41) (41) are stretched on the left and right sides, respectively.
Engageable in the vicinity of the left and right ends of the upper side (45) of the rectangular frame (40) is a pair of locking holes (33) (33) penetrating the left and right sides of the upper end of the back plate (3). Stop hooks (43) and (43) project.

  In addition, a clip hole (2) through which a clip body (1), which will be described later, can be inserted, is formed at the lower end of the vertical center line portion (42). And, in a state where the locking hooks (43) (43) are locked to the locking holes (33) (33), at a predetermined position of the back plate (3) corresponding to the clip hole (2), Both ends of the back plate (3) correspond to the lower side (44) of the rectangular frame (40), and the clip body (1) further penetrates the locking hole (30) that can be locked in the retaining state. Support hooks (34) (34) for supporting the lower side (44) from below are projected at respective positions in the vicinity.

  The clip body (1) is formed by integral molding of synthetic resin, and as shown in FIGS. 1 and 2 (A) and (B), at one end of the substantially cylindrical shaft portion (11), The locking arm portions (12) and (12) and the locking leg portions (13) and (13) protrude from the sides alternately at intervals of 90 degrees, and the shaft portion (11) On the end side, an operation head (15) is formed so as to be elongated in the protruding direction of the locking legs (13) (13). 2B shows a state in which (A) is rotated 90 degrees.

  A disc part (10) protrudes from the base end of the operation head (15), and a pair of support leg parts (14) is provided between the disc part (10) and the locking leg part (13). ) (14) projects in the same direction as the locking legs (13) (13). The distance between the locking leg (13) and the support leg (14) is set so as to substantially match the thickness of the back plate (3).

A pair of convex parts (16), (16) are provided on both ends of the diameter perpendicular to the longitudinal direction of the operating head (15), of the periphery of the disk part (10), and the shaft part (11). It protrudes from the surface on the one end side (the lower surface in FIG. 2).
As shown in FIG. 2 (B), the locking arm portions (12) and (12) are separated from each other upward from the one end (lower end in the drawing) of the shaft portion (11). It protrudes so as to extend obliquely, and its extended end is set to be positioned higher than the locking leg (13). Further, the distance (L2) between the outer ends of the extended ends is set to be larger than the distance (L1) between the outer ends of the base end portions. The locking arm portions (12) and (12) can be elastically deformed in directions close to each other using the elasticity of the synthetic resin.

  To fix the air filter (4) to the back plate (3), first attach the lower side (44) of the rectangular frame (40) of the air filter (4) to the support hook (34) of the back plate (3). (34), and keep the upper side (45) close to the back plate (3) side, then lift the air filter (4) slightly, and lock the hooks (43) (43) into the locking holes. (33) Lock to (33). In this state, the clip hole (2) provided at the lower end of the longitudinal center line portion (42) of the air filter (4) communicates with the locking hole (30) of the back plate (3). Then, if the clip body (1) is inserted and fixed in the clip hole (2) and the locking hole (30), the air filter (4) is attached and fixed to the back plate (3).

As shown in FIG. 3, the clip hole (2) is formed in a cylindrical portion (20) protruding a predetermined height from the lower side (44) of the rectangular frame (40) to the opposite side (outside) of the back plate (3). Is formed.
The cylindrical portion (20) is provided with a recessed portion (25) having a size and depth that can accommodate the disc portion (10) of the clip body (1) described above so as to open outward. And the clip hole (2) communicates with the first hole (21) opened to the recess (25) and the first hole (21) and opens to the back plate (3) side (inward). It is comprised from the 2nd hole (22). The depth of the second hole (22) is set so as to substantially match the extended height of the engagement arm portion (12) (see FIG. 6).

As shown in FIG. 4, the shape of the first hole (21) is composed of a long hole (21a) whose long side is located along the lower side (44) and a round hole (21b) located at the center thereof. As shown in FIG. 5, each of the second holes (22) is provided with pillar portions (23) and (24) at opposing positions, and the portions other than the pillar portions (23) and (24) are open. It has become.
In addition, the long side length of the long hole (21a) of the first hole (21) is the length (L3) between the projecting end surfaces of the engaging leg (13) of the clip body (1) (see FIG. 2 (A)). ), And the diameter of the round hole (21b) is larger than the distance (L1) between the outer ends of the base end portions of the engagement arm portions (12) and (12) and the engagement arm portion ( 12) It is set to be smaller than the distance (L2) between the outer ends of the extended ends of (12) (see FIG. 2B).

As described above, the locking arm portions (12) and (12) can be elastically deformed in directions close to each other, so that the protruding direction of the engaging leg portions (13) and (13) is the long side of the long hole (21a). Accordingly, the clip body (1) is inserted into the clip hole (2) from the one end side. Then, the engaging leg portions (13) and (13) pass through the long hole (21a) of the clip hole (2) and the locking arm portions (12) and (12) are elastically deformed in the direction in which the extended end sides are close to each other. And passing through the round hole (21b). Then, after passing, the locking arms (12) and (12) are elastically restored in the second hole (22), so that the extended ends of the locking arms (12) and (12) as shown in FIG. Contacts the peripheral edge of the round hole (21b) of the first hole (21). As a result, the clip body (1) is prevented from being detached from the clip hole (2).
In addition, as shown in FIG. 4, each part corresponding to the both sides of the longitudinal direction both ends of the said long hole (21a) of the periphery of a dent part (25), and each part rotated 90 degree | times from each of these, Recesses (26), (27) having a depth substantially equal to the height of the protrusions (16) of the disk part (10) are formed in the vertical and horizontal directions of the first hole (21), respectively. Yes.

  The shape of the locking hole (30) formed in the back plate (3) is formed so as to substantially match the shape of the first hole (21) of the clip hole (2). Is set to be larger than the distance (L2) between the outer ends of the extended ends of the engaging arm portion (12) described above.

  The distance (L4) from the engagement leg (13) to the lower surface of the disc (10) is the distance from the open end of the second hole (22) to the bottom of the recess (25). The length (L5) of the combined thickness of (3) is substantially the same, and the surface of the engaging leg (13) (13) facing the support leg (14) (14) is The inclined surfaces (13a) and (13a) descend in the direction of rotation of the clip body (1) (see FIG. 6).

  To fix the center of the lower side (44) of the air filter (4) to the center of the back plate (3) using the clip body (1), first, as described above, the rectangular frame of the air filter (4) is used. The lower side (44) of (40) is supported by the support hooks (34) and (34) of the back plate (3), and the hooks (43) and (43) are locked to the locking holes (33) and (33). Let At this time, it is assumed that the clip body (1) is attached in advance to the clip hole (2) of the air filter (4) in the above-described manner.

  The first hole (21) of the clip hole (2) and the long hole of the locking hole (30) of the back plate (3) are both formed in a direction parallel to the lower side (44), and the operation head Since (15) is formed in an elongated shape along the protruding direction of the engaging legs (13) and (13), the posture of the clip body (1) is determined so that the operating head (15) is oriented sideways. (First posture) The surfaces of the engaging legs (13) and (13) in the rotational direction in this posture are respectively column portions (23) and (24) in the second hole (22) of the clip hole (2) shown in FIG. It will contact | abut to the horizontal surface (23a) (24a) which comprises. With the posture, when the clip body (1) is pushed in until the lower surface of the disk portion (10) contacts the bottom surface of the recessed portion (25) of the cylindrical portion (20), as shown in FIG. The convex portions (16) and (16) of the disc portion (10) are fitted into the concave portions (27) and (27) formed above and below the concave portion (25). On the other hand, the engaging arm portion (12) and the engaging leg portion (13) can be easily inserted through the locking hole (30) of the back plate (3), and the engaging leg portions (13) and (13) can be inserted into the back plate (3). ) Through the locking hole (30) and project into the fan heater body.

From the state of FIG. 7, the operation head (15) is rotated 90 degrees clockwise.
As described above, the distance (L4) from the locking leg (13) to the lower surface of the disk portion (10) is the distance from the open end of the second hole (22) to the bottom of the recess (25). Therefore, when the operating head (15) is turned, the convex parts (16) (16) At the same time as the forcible escape from the recesses (27), (27), the engaging legs (13), (13) slide into contact with the inner peripheral surface of the locking hole (30). At this time, the disc portion (10) is elastically deformed to a state of being raised from the recessed portion (25) by the protruding height of the convex portions (16), (16), and at the same time, the engaging leg portions (13), (13) Since the surface in contact with the inner surface of the back plate (3) is an inclined surface (13a) (13a) that descends in the direction of rotation of the clip body (1), the engaging leg (13) (13 ) Can smoothly enter the inner peripheral surface of the locking hole (30) of the back plate (3) using the inclined surfaces (13a) (13a). At this time, since the periphery of the locking hole (30) is located between the locking leg (13) and the support leg (14), the clip body (1) is inserted into the clip hole. Posture is stable.

  The state rotated 90 degrees in this posture is the second posture of the clip body (1) shown in FIG. The operating head (15) is in a vertical posture, and at the same time, the engaging legs (13) and (13) are engaged with the upper and lower regions of the inner peripheral surface of the locking hole (30) of the back plate (3) in a retaining state. The convex portions (16) and (16) are stopped by the elastic return force of the disc portion (10) at the time corresponding to the concave portions (26) and (26) located at the left and right ends of the concave portion (25). The portions (16) and (16) are fitted into the recesses (26) and (26) vigorously.

  This state is the state in which the air filter (4) is fixed to the back plate (3) by the clip body (1), and the protrusions (16) (16) are fitted into the recesses (26) (26). It is possible to confirm that the clip body (1) is securely locked in the retaining state by the touch and sound of

  To remove the air filter (4) from the back plate (3) during maintenance such as replacing the filter part (41), turn the operating head (15) of the clip body (1) 90 degrees counterclockwise. Let Then, the convex portions (16) and (16) are escaped from the concave portions (26) and (26) at the left and right ends of the concave portion (25), and the convex portions (16) and (16) are the upper and lower ends of the concave portion (25). When the recesses (27) and (27) are reached, the recesses (27) and (27) are fitted into the recesses (27) and (27).

  From this state, when the clip body (1) is pulled, the locking arm portion (12) and the locking leg portions (13) (13) pass through the locking hole (30) of the back plate (3). The disc part (10) is separated from the recessed part (25), and the locking arm part (12) and the locking leg part (13) are accommodated in the cylindrical part (20). Thus, after releasing the engagement of the locking legs (13) and (13) with the locking holes (30), the air filter (4) is lifted upward, and the lower side (44) of the rectangular frame (40) At the same time as releasing the support by the support hooks (34) and (34), the locking hooks (43) and (43) are pulled out from the locking holes (33) and (33). Thereby, the air filter (4) can be removed from the back plate (3) of the fan heater.

  Even when the clip body (1) is pulled out from the locking hole (30) of the back plate (3), as shown in FIG. 6, the extended end of the locking arm portion (12) is the first end of the clip hole (2). The clip body (1) does not fall out of the clip hole (2) of the air filter (4) because it comes into contact with the periphery of the round hole (21b) provided in the hole (21).

Therefore, even if the air filter (4) is removed from the back plate (3), the clip body (1) is not separated from the air filter (4), so that the clip body (1) can be prevented from being lost. .
In this embodiment, when the operation head (15) is positioned vertically, the locking legs (13) (13) are locked in the locking holes (30) of the back plate (3). When the clip body (1) is in a fixed state and is positioned horizontally, the clip body (1) can be fixed so that the locking legs (13) (13) can escape from the locking holes (30). Since it is in the released state, the fixing state by the clip body (1) can be easily confirmed by the posture of the operation head (15).

  To rotate the operating head (15) in the vertical or horizontal posture, the convex portion (16) (16) of the disc portion (10) fitted in the concave portion (26) or the concave portion (27). Is required to force the disk part (10) to escape from the concave part (26) or the concave part (27) while elastically deforming the disk part (10). In other words, the clip body (1) in a fixed posture rotates naturally and the fixed state is loosened, or the locking legs (13) (13) are released from the locking holes (30). There is no inconvenience that the air filter (4) is inadvertently detached from the back plate (3).

  Although the clip body (1) does not rotate carelessly as described above, the clip body (1) can be rotated only by rotating the operation head (15) without using other parts or jigs. Since the air filter (4) can be easily attached and detached by the above, the workability of the work of detaching the air filter (4) from the back plate (3) is improved.

  In the above embodiment, the clip hole (2) is provided only in the center of the lower side (44) of the air filter (4), and the clip body (1) is fixed to the back plate (3). The clip hole (2) is provided at a plurality of locations of the air filter (4), and the clip body (1) provided at each of the clip holes (2) is a locking hole (30) provided at a plurality of locations corresponding to the back plate (3). It is good also as a structure locked and fixed to. In this case, the fixing strength of the air filter (4) to the back plate (3) can be further improved.

The disassembled perspective view which shows the back plate as a board | substrate of this invention embodiment, the air filter as a coating | coated board, and the clip body as a fixing means which fixes these. It is explanatory drawing of the clip body employ | adopted by embodiment of this invention, (B) shows the state which rotated (A) 90 degree | times. Sectional drawing of the lower side center of the air filter employ | adopted by embodiment of this invention. Explanatory drawing of the lower side center of the air filter employ | adopted by embodiment of this invention. The rear view of the cylinder part which abbreviate | omitted the rectangular frame of the air filter employ | adopted by embodiment of this invention. Explanatory drawing which shows the state which made the clip body employ | adopted by embodiment of this invention inserted in a clip hole. Explanatory drawing which shows the state which inserted the clip body further from the state of FIG. Explanatory drawing which shows the state which rotated the clip body 90 degree | times from the state of FIG.

Explanation of symbols

(1) ・ ・ ・ ・ ・ ・ Fixing member (clip body)
(11) ・ ・ ・ ・ ・ ・ Shaft
(12) ・ ・ ・ ・ ・ ・ Locking arm
(13) ... Locking leg
(15) ... Operation head
(2) ・ ・ ・ ・ ・ ・ Fixing member (clip hole)
(3) ・ ・ ・ ・ ・ ・ Substrate (back plate)
(30) ... Locking hole
(4) ・ ・ ・ ・ ・ ・ Coating board (air filter)

Claims (5)

In the fixing structure of the covering plate in which the covering plate coated on the substrate is detachably fixed by the fixing member,
The fixing member includes a clip hole provided in the cover plate and a resin clip body that is rotatable with respect to the clip hole and is attached in a retaining state.
A locking hole is provided at a predetermined position of the substrate corresponding to the clip hole,
The clip body includes a clip leg and a lock leg portion that can be inserted continuously through the lock hole, a lock arm portion that is locked into the clip hole by being forcedly inserted, An operation head that can be rotated in a direction in which the locking leg can be locked in a locking state with respect to the locking hole is provided integrally with the shaft .
Each of the locking legs protrudes from the mutually opposing positions in the vicinity of one end of the shaft part, one on each side.
The locking arm portion extends obliquely while being separated from the shaft portion toward the other end of the shaft portion, one on each side from the mutually opposing positions between the locking leg portions. Projecting
The clip hole is opened in one surface of the cover plate and is provided in the center of the long hole through which the pair of locking leg portions can be inserted at the same time, and elastic in the direction in which the pair of locking arm portions are close to each other. A first hole having a shape of a round hole of a size that can be inserted while being deformed, communicated with the first hole, opened to the other surface of the cover plate, and the locking leg and the locking arm portion. It consists of a second hole with a depth that can be accommodated simultaneously,
The locking hole is configured in a shape having a round hole of a size that allows the pair of locking arm portions to be inserted in a natural state at the center of a long hole having the same size and shape as the first hole,
The locking leg can be locked to the round hole of the locking hole in a state where the locking leg is rotated by a predetermined angle by the operation of the operation head after inserting the elongated hole of the locking hole. fixing structure of the cover plate, characterized in that. The covering plate fixing structure according to claim 1 , wherein the operation head is configured to have an elongated cross-sectional shape in a protruding direction of the locking leg portion. 3. The cover plate fixing structure according to claim 1 , wherein a disk portion projects in a circumferential direction at a proximal end portion of the operation head of the clip body and is opposite to the operation head. Projections are projected on the surface of
When the clip body is in a first posture in which the locking leg can be inserted into the clip hole, and the clip body is rotated by 90 degrees in the circumferential direction from the first posture. In each of the two postures, a concave portion into which the convex portion can be fitted is provided at each position around the clip hole to which the convex portion corresponds.
The distance between the locking leg portion and the disc portion is set so as to be approximately equal to the combined length of the locking hole and the clip hole. Cover plate fixing structure. The cover plate fixing structure according to any one of claims 1 to 3 , wherein a pair of support legs are provided on the shaft part closer to the operation head than the locking leg part and the locking leg part. Protruding in the same direction,
The cover plate fixing structure, wherein a distance between the locking leg portion and the support leg portion is set to substantially match a thickness of the substrate. The cover plate fixing structure according to any one of claims 1 to 4 , wherein the substrate is a back plate of a fan heater, and the cover plate is an air filter provided with a filter surface in a rectangular frame,
Locking hooks are provided at both ends near the upper side of the rectangular frame so as to project obliquely downward, and the locking hooks can be locked at predetermined positions on the back plate corresponding to the locking hooks. Each is provided with a locking hole,
In the state where the locking hook is locked to the locking hole, a supporting hook for receiving the lower side is provided in the vicinity of both ends of the back plate to which the lower side of the rectangular frame corresponds, and The cover plate fixing structure, wherein the clip hole is provided in the center of the lower side.

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