JPH0563368U - Crotch-opening spring-type back plate retainer for frame - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a crotch-opening spring type back plate retainer that not only provides a strong locking force but also is easy to install and remove because it changes to a posture in which it will never come out of the frame. To do. [Structure] On both sides of the top body piece, leg pieces for standing on the back plate of the frame are continuously connected in a crotch-like manner, and a head piece having a cross-section protruding length to be inserted into the frame projects forwardly on the front. It is installed by forming the neck part so that it catches on the opening ridge of the insertion groove of the frame, and the body part is rearwardly projected with respect to the leg part, and the foot part at the lower end of the leg part is formed. Are also formed rearward in a toe-like manner so that the posture height between the upper and lower end surfaces of the head piece is smaller than the opening width of the insertion groove when the head is raised in the horizontal direction. The head piece is hooked on the ridge of the frame by elasticity, and it is configured to press-contact with the lower piece of the insertion groove using that portion as a fulcrum.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a crotch-opening spring type back plate retainer used to press the back plate of a frame toward the work.

[0002]

[Prior Art]

 This kind of back plate retainer is formed of elastic metal or plastic in a crotch-opening shape having both legs, and presses down the back plate by its elasticity. Examples thereof include those described in Japanese Utility Model Publication No. 63-54369.

FIG. 5 and FIG. 6 show a back plate retainer described in the publication. The back plate retainer is formed by pressing a metal plate, and both legs 51, 51 open crotch. A flat finger retainer portion 52 is formed on the upper end, and a hook claw 53 is projected on the front end thereof. Feet 54, 54 are formed in a warped shape at the lower ends of both legs 51, 51, and toe portions 55, 55 are provided on both legs 54, 54 in the same front direction as the projecting direction of the hooks 53.

The latch claw 53 is formed in a U shape so as to be inverted from downward to upward. Therefore, in the frame 56 of the frame, a groove 57 is formed on the back side of the rear surface wall, and by hooking the locking claw 53 on the groove 57, the back plate 58 is stopped by the elasticity of both legs 51.51. ..

[0005]

[Problems to be solved by the device]

 According to the conventional crotch-opening spring-type back plate retainer as described above, the protrusion is provided just below the latching claw 53 so that the spring force of the spring acts on the latching claw 53 in the vertical direction (see the arrow). Since the toe parts 55, 55 are projected further longer than the length, the locking force more than the elastic force of the spring cannot be obtained from the acting direction of the spring and it is easy to come off, so any deep locking part is Since it was necessary, it was not easy to install and remove.

[0006] Further, since the toe portion is projected forward, a force is applied to the toe portion when it is advanced toward the frame so as to be hung on the frame, the slip on the back plate is bad, and when pulling it out. However, it was difficult to install and remove even at this point because it was easy to fall backward and it was difficult to apply pulling force.

In view of the above situation, the present invention provides a crotch opening spring that not only provides a strong latching force but also can be easily attached and detached because the posture changes so that the frame never comes out. The purpose is to provide a type back plate retainer.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention has a pair of leg pieces for standing on a back plate of a frame connected in a crotch-opening manner on both sides of a top body piece, and has a cross-section protruding at the front surface to be inserted into a frame. A long head piece is projected forward and the neck is depressed so that it catches on the opening ridge of the insertion groove of the frame. Similarly, the legs at the lower end of the leg pieces are also formed rearward in a toe-like shape, and the posture height between the upper and lower end surfaces of the head piece is greater than the opening width of the insertion groove when the head is raised horizontally. It is characterized in that it is formed to be small, and that the head piece is hooked on the ridge of the frame by the elasticity of the leg piece, and is pressed against the lower piece of the insertion groove with that portion as a fulcrum.

In addition, a finger-holding recess may be formed on the upper surface of the body piece.

[0010]

[Action]

 Since the crotch-opening spring-type back plate retainer is configured as described above, when it is attached to the frame, it is erected on the back plate and then pushed forward while pressing the torso piece with your fingertips. Lower the head piece and thrust it into the insertion groove of the frame, and hook it on the ridge at the neck.

Since the body piece is formed in a rearward projecting shape, pressing it down causes a downward slope in the rear, which is a high slope forward, so it can be advanced over the back plate. The head piece lifts the head in the horizontal direction at the same time when the head is tilted, and its posture height becomes smaller than the opening width of the insertion groove. When released, the elastic force of the spring acts with the catching portion as the fulcrum, the head piece strengthens the forward inclination and presses against the lower piece of the insertion groove, and the posture height is fixed so that it does not come off.

[0012] The foot part protrudes backward like a toe, and when the torso piece is pushed down, it tilts backward, so there is a risk of tipping over when advancing for attachment or retracting for removal. There is no.

[0013]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings.

1 to 4 show an embodiment, in which a crotch-opening spring-type back plate retainer P is integrally molded of plastic having elastic force, and the top body part 1 The legs 3 and 3 are provided on both sides of the body so as to project in a bow shape, and the head piece 5 is provided on the lower portion of the front surface of the body piece 1.

The body part 1 has a substantially horizontal upper surface in a stepladder on the back plate 25 (FIG. 2), but has a rear end projecting shape with respect to both leg parts 3 and 3, and A wide concave portion 7 is provided as a finger pad, and the concave and convex portions are easily formed on the inner surface of the concave portion 7 so as to be easily hooked with a finger.

The both leg pieces 3, 3 have a front-back width that gradually narrows downward, and has a foot portion 9 at the lower end portion that projects backwards like a toe. Further, ribs 11 are formed on the upper surface along the peripheral edge.

The head piece 5 is formed so as to be inclined downward, is longer than the thickness in the protruding direction, has an elliptical shape in cross section, and has a portion of the neck portion 13 so that it can be caught by the frame F of the frame G. The upper surface is depressed.

In the frame F, the insertion groove 15 of the head piece 5 is opened on the inner peripheral surface, and of the upper and lower pieces 17 and 19 constituting the insertion groove 15, the head piece 5 is placed at the opening edge of the upper piece 17. The ridge 23 to be hooked is provided so as to project downward. Under the lower piece 19, a storage groove 31 for accommodating the back plate 25, the mat 27, and the ends of the glass 29 is formed.

Regarding the relationship between the head piece 5 of the presser tool P and the insertion groove 15 thereof, if the opening width (height) of the insertion groove 15 is W, the posture height between the upper and lower surfaces of the head piece 5 is increased. Ha is large (Fig. 2)

In order to hook the head piece 5 into the insertion groove 15, by pressing the fingertip into the concave portion 7 on the body piece 1 to press it down (FIG. 3), both leg pieces 3 and 3 are elastic. However, due to the shape of the rear end of the body piece 1, the body piece 1 is pushed backward at a low inclination, and at that inclination, it is easy to push forward. Further, the head piece 5 becomes lower in a state where the head piece 5 is raised or raised, and the posture height Hb becomes smaller than the opening width W of the insertion groove 15.

When the head piece 5 is inserted into the insertion groove 15 and then the finger is released (FIG. 4), the head piece 5 is projected on the neck portion 13 by the elastic force of the leg pieces 3 and 3 at the ridge 23 of the frame F. Get caught in. Due to the action of the spring, a force for reversing backward is applied to the body piece 1 and the head piece 5 with this catching portion as the fulcrum A (arrow Q in the figure), so that the body piece 1 is lifted about the fulcrum A. At that inclination, the head piece 5 comes into pressure contact with the lower piece 19 of the insertion groove 15 at point B.

The head piece 5 rotates together with the body piece 1 and strengthens the front drip inclination, so that the posture height Hc becomes larger than the opening width W, and further, the ridge 23 extends from the reversing force toward the rear. The head piece 5 is completely caught by the reversal force, and the head piece 5 never comes out of the insertion groove 15.

When pulling out the head piece 5, as shown in FIG. 3, the body piece 1 is pressed with a finger to raise the head piece 5 to reduce the posture height H.

In the attached state (FIG. 4), considering the portion B where the head piece 5 contacts the lower piece 19 as the fulcrum, the point A becomes the point of action, so the shape of the foot portion 9, especially the toe portion. If the force point is located as rearward as possible due to the shape and the protruding length of 10, the force greater than the elastic force of the spring can act on the hooking portion at point A.

[0025]

[Effect of the device]

 As described above, according to the back plate retainer of the present invention, since the body piece protrudes backward in the shape of a tail, when it is simply pushed with a finger, it is inclined backward. As the head piece lowers its head horizontally and lifts it horizontally to insert it into the insertion groove, the head piece can be easily hung on and removed from the ridges of the frame, and in the installed state. Because the posture height of the head piece becomes larger than the opening width of the insertion groove, and the elastic force of the spring acts as a force that urges the neck part forward without being dislodged, it is easy to remove and the engagement state is easy. However, it never comes off. In addition, since the foot portion protrudes backward like a toe, it is easy to move forward, and since it is prevented from tipping over when retracting, this point is also easy to attach and detach.

In addition, when the concave portion is formed on the upper surface of the body piece, it is possible to easily attach and detach it by putting a finger on the concave portion.

[Brief description of drawings]

FIG. 1 is a perspective view showing a stepped state on a back plate of a frame.

FIG. 2 is a vertical cross-sectional view showing an enlarged view of FIG.

FIG. 3 is a vertical sectional view showing a mounting procedure.

FIG. 4 is a vertical sectional view showing a mounted state.

FIG. 5 is a perspective view of a conventional example.

FIG. 6 is a vertical cross-sectional view showing a mounted state of a conventional example.

[Explanation of symbols]

 A fulcrum F frame G frame Ha, Hb, Hc posture height P crotch opening spring type back plate retainer W opening width of insertion groove 1 body piece 3 leg part 5 head piece 7 recess 9 foot 13 neck 15 insertion groove 19 lower piece 23 ridge

Claims (2)

[Scope of utility model registration request] 1. A leg piece for standing on a back plate of a frame is continuously provided on both sides of a top body piece in a crotch-opening manner, and a head piece having a projecting cross-section to be inserted into a frame is inclined forward on the front surface. It is formed by dropping the neck part so that it catches on the opening ridge of the insertion groove of the frame, and the body part is rearwardly protruding with respect to the leg part, and the bottom part of the leg part The legs are also formed rearward in a toe-like shape, and the height between the upper and lower end surfaces of the head piece is smaller than the opening width of the insertion groove when the head is raised horizontally. A crotch-opening spring type back plate retainer for a frame, characterized in that the head piece is hooked on the ridge of the frame by the elasticity of the piece and is pressed against the lower piece of the insertion groove with that portion as a fulcrum. 2. A crotch-opening spring type back plate retainer for a frame according to claim 1, wherein a recess for finger hooking is formed on the upper surface of the body piece.