MXPA99001599A - Cerrojo de impacto and yes method of ensam - Google Patents

Abstract

A sliding action impact lock to secure a. door panel, especially a hinged door panel, in a closed position with a bolt body built in one piece and carrying a spring that is installed in it, the bolt being installed in a single opening in the door panel and being self-retained in it. The bolt operates by means of a sliding action directed by the spring to engage with the door frame or a percussion plate. The spring predisposition is provided by means of a separate spring member and the bolt is additionally provided with a spring guide to facilitate the installation of the spring in the bolt. A method for assembling the hill is also provided

Description

LATCH OF IMPACT AND ITS METHOD OF ASSEMBLY BACKGROUND OF THE INVENTION FIELD OF THE INVENTION This invention relates to bolts used to secure, in closed position, hinged door panels. The invention relates especially to that class of bolts in which a cam surface at one end of a sliding bolt member cooperates with a striking surface on a door frame to cause the bolt action to secure the door when closed against the frame. The invention relates especially to that class of bolts in which a cam surface at the end of a sliding bolt element cooperates with a firing surface on the frame of a door for the action of the bolt to secure the door as it is closed against the frame.

BRIEF DESCRIPTION OF THE PREVIOUS TECHNIQUE The principle of impact action has been widely used in the prior art and has been included in various bolt designs that commonly incorporate a housing that assembles several components, one of which is a sliding bolt element. The general characteristic of this type of bolt is that it is activated to secure the door by means of the cooperation of a firing pin mounted on the frame of a door when the door is pushed gently or is closed at a stroke, but which requires some operation of the mechanism of bolt to release the bolt and open the door. The particular class of locks to which the current invention belongs uses a cam surface at the end of the bolt element to cooperate with the striking surface to slide the bolt in the housing against the force of a spring contained therein. This spring force then urges the bolt to engage behind the door frame or to engage with a securing element provided in the door frame. To open a door secured with such a bolt, a hand grip is normally provided to operate the mechanism that removes the bolt end of the coupling with the latch on the door frame. Currently available bolts of impact-type slide bolts are installed by mounting the bolt assembly on a door panel using rivets, or bolts and nuts, or screws, or other fastening means.

Other impact bolts include a flexible wall portion or a spring to direct the sliding action of the bolt to open and close the door. Examples are shown in U.S. Patent Nos. 3,841,674 and 3,850,464, both referred to as "Impact Bolt," the complete disclosures of which are incorporated herein by reference. This type of bolt operates by a sliding action directed by spring to engage with a percussion plate or the frame of a door. A separate spring member has been employed in this type of bolt. However, in the operation of the bolt, it has occurred that the spring member has been prevented from engaging the wall adjacent to the bolt. The present invention attempts to solve this problem associated with bolts of this type of the prior art by providing an improved and novel impact bolt. SUMMARY OF THE INVENTION The primary object of the present invention is to provide a sliding bolt-type impact bolt that can be installed more easily, at low cost, without the use of rivets, or bolts and nuts, or screws, or other fasteners, and with an improved operation. Mentioned object is made, according to one embodiment of the present invention, by constructing a bolt of material having spring characteristics or sufficient elasticity to achieve a "pressurized" installation wherein the function of closing by impact is provided by means of a separate spring , and wherein the spring is configured to provide a cooperative operation with the panel in which the bolt is installed, or with which the bolt is associated. Another object of the present invention is to provide a novel method for assembling a bolt in which a spring member provided separately is installed in the bolt. BRIEF DBSCRIPTION OF THE DRAWINGS Fig. 1 is a perspective representation of a bolt embodiment of the current invention. Fig. 2 is a view in left lateral elevation of the bolt of Fig. 1, shown in an interim position during its installation in a door panel. Fig. 3 is an elevation view of the left side of the bolt mode of Figs. 1 and 2, shown fully installed in a door panel. The bolt unit in Fig. 3 is shown in its front or closed position. Fig. 4 illustrates a longitudinal sectional view of the lock of Fig. 3 being pushed to its rear or open position.

Fig. 5 is an elevation view of the right side of the rear portion of the latch of Fig. 3. Fig. 6 is a sectional view of the latch rib taken along line 6-6 of Fig. 5. 5. Fig. 7 is a sectional view of the bolt taken along line 7-7 of Fig. 3. Fig. 8 is a sectional view of the bolt taken along line 8-8 of the Fig. 3. Fig. 9 is an elevation view of the right side of an alternate bolt embodiment according to the present invention. Fig. 10 is a top sectional view of the latch of Fig. 9 taken along line 10-10 of Fig. 9 showing the rear portion of the bolt. Fig. 11 is a longitudinal sectional view of the bolt body shown in Figs. 9 and 10, taken along line 11-11 of Fig. 10. Fig. 12 is an enlarged partial perspective view of the right side of the wall inclined portion of the bolt embodiment of Figs. 9-11. Fig. 13 shows a modification in which the hand grip is a knob gripped by finger and thumb instead of the finger concavity shown in Figs. 1-4 and in Figs. 10 and 11.

DETAILED DESCRIPTION OF THE PERFERRED MODALITIES With reference now to FIG. 1, this figure is a perspective view of an embodiment of the invention wherein the impact bolt comprises a single component of an elastic plastic material formed by molding or by another method. of manufacture. The impact bolt of Fig. 1 includes a bolt body 10 having at one end a portion engageable with the frame 12 adapted to engage with the frame F, an angled cam surface 13, an adjacent guide surface 14, and a concavity 15. The bolt body 10, at its other end, has a vertical wall portion 16 which is integral with the bolt body 10 at its base but which is spaced upwardly. The wall portion 16 is bent to allow the insertion of the bolt body 10 into the panel opening, after which the wall portion 16 is springbacked to a position to retain the bolt in the panel. A metallic spring element is provided, shown composed of a torsion spring 29. The spring 29 has a first spring arm 30 with a hook 31 extending therefrom. The end of the spring arm opposite the hook end is attached to a spiral portion 33 of the spring. A second spring arm 32 is provided and engaged in the transverse wall of the bolt body 35. The predisposition of the spring for the sliding movement of the bolt is provided only by the spring metal element 29. An upper surface 17 covers the body of the spring. bolt 10 and projects beyond it in all directions, forming a peripheral flange 18. The peripheral flange 18 is superimposed on the perimeter of the installation gap provided in the door or other panel. A finger cavity 19 is provided in the upper surface 17, having a rear wall 20 tilting down and backward. By means of the finger cavity 19, the bolt can be manually slid back to its unlocked position, as indicated in Fig. 4, after which the door can be opened by the movement of the finger, shown in phantom in Fig. 4, in the direction of the phantom arrows. Fig. 2 shows the manner in which the bolt body of Fig. 1 is inserted into a rectangular opening prepared in the door panel P. The concavity 15 has a specific shape and size to receive the leading edge E of the opening in the door panel P. During installation, the rear edge R of the opening makes contact with the wall portion 16, which is bent to allow the insertion of the bolt into the rectangular opening in the door panel P. From the position partial insert shown in FIG. 2, the bolt body 10 is rotated in a clockwise rotation about the leading edge E of the panel opening. During this rotation, the wall portion 16 is forced to curl forward towards the bolt body 10, to allow the upper edge 24 of the wall portion 16 to pass the trailing edge R of the opening of the panel. In this manner, the bolt is inserted into the opening of the panel in its final position, illustrated in Fig. 3. In Fig. 2, the installation force is indicated by the arrow "I". Referring now to Fig. 3, the bolt is shown here in its normal, unlocked position. All edges of the panel opening underlie and are hidden by the peripheral flange 18 of the cover 17. The upper end of the wall portion 16 is shown as consisting of a flange 25 which is spaced from the peripheral flange 18 of the cover 17 to define an interior space 26 for accommodating the rear edge R of the panel opening between the bottom surface of the flange 18 and the flange 25, in which space 26 the rear edge R is slidably supported. The portion of the panel adjacent the leading edge E of the opening is slidably supported between the lower surface of the flange 18 and the guide surface 14. The engagable portion of the frame 12 retains the bolt body 10, and therefore the panel gate P, in a closed position with respect to the frame F. In FIG. 4, by means of the finger shown in phantom, the bolt has been slid to its rear position against the action of the torsion spring 29. This is the position unlocked of the bolt, the portion engageable with the frame 12 being withdrawn in order to pass the frame of the door F. The leading edge E of the panel opening has moved forward in the cavity 15, however, it is fastened under the flange 18, as is clearly visible in Fig. 4. The rear edge R of the panel opening continues to be retained in the space 26 formed by the flange 25 of the wall portion 16 and the flange 18. During the operation of the bolt, the first b The spring arm 30 is forced towards the body 30 of the bolt (from its position in Fig. 3 to its position in Fig. 4) by the rear edge R of the opening of the panel P which engages in the hook 31 of the first arm of spring 30. With the bolt 10 slid to the left, in the position shown in Fig. 4, the spring 29 is tightened, and there is a predisposition of the bolt portion that engages with the frame to engage the frame F When the backward force applied by the finger in the cavity 19 is eliminated, or even when the bolt body is free of pressure from that or any other force from outside, the arm of the spring 30 and the hook 31, return from the position shown in Fig. 4 to the position shown in Fig. 3, and this force causes the bolt body 10 to slide forward with respect to the panel P until the front edge of the panel rests against the edge of the cavity 15, as shown in Fig. 3. For the or, the spring 29, upon returning to its closed or rest position, causes the frame engaging portion 12 of the bolt body 10 to engage in the door frame F. As shown in Figs. 3 and 8, the transverse wall 35 preferably comprises a vertically disposed and partially inclined wall section 36, which is defined in part by an angled wall segment 37. The angled wall segment 37 appears with a triangular configuration, with the vertex 47 pointing downwards relative to the peripheral flange 18 of the bolt, to which the base portion or upper part of the segment 37 is attached. The vertical portion of the wall 16 is opposite the transverse wall 35 of the bolt body 10. Containment means are provided to facilitate retention of the spring member 29 in the assembly. The panel P advances within the space 26, and the rear edge of the panel R directs the arm of the spring 30 towards the bolt body 10. The spring containment means are preferably provided in the form of a portion extending partly over the spring member 29. The spring containment means are shown extending from the vertical wall portion 16 of the bolt and having an arched shape 27 which partially surrounds the spring 33. Figs. . 5 and 6 show the spring installation means of the current invention. The vertical wall portion 16 and the transverse wall portion 35 of the bolt body 10 define a retaining space 34 in which the spring member 29 is disposed., the spring member 29 is installed by sliding it into the interior of the space 34 in a direction parallel to the direction of its installed position. The spring installation means is provided to facilitate the installation of the spring member 29 in the bolt. The spring installation means are shown as comprising diverting means including the protruding rib member 38 extending outwardly from the vertical wall portion 16 to the rear transverse wall 35 of the bolt body 10. Preferably, the rib member 38 has a bevelled or inclined side 39 (see Fig. 6) to provide the leverage of the spring arm 30 in an outward direction of the vertical wall 16, when the spring 29 is inserted for installation in the receiving space 34. Levering of the spring 29 tightens the first spring arm 31 against the force of the spring 33 to cause the raising of the spring arm 30 and the hook 31 attached thereto in the vertical direction. The spring 29 is inserted from the right side (the side shown in Fig. 5) of the bolt sliding into the space 34, with the second arm, or spring rear arm 32 being inserted on the right side of the bolt. When the first spring arm 30 is inserted into the space 34, the arm 30 eventually engages the rib 38, after which the spring 29 continues to be inserted to complete its installation in the bolt. During this additional part of the insertion, the spring arm 30 is directed by means of the rib 38 and moves along the rib 38 until it reaches the side wall 41 of the projecting portion 42. This is represented by the movement of spring in Fig. 6 which, during installation, moves from its position shown in phantom to its final installed position, in the direction of arrow "I". Fig. 7 shows a sectional view of the bolt body 10 with the spring member 29 installed, seen from the transverse wall 35 of the bolt body 10 facing the rear part of the bolt. The rib member 38 is shown extending transversely from one side of the vertical portion of wall 16 towards the center of the bolt and ending in the side wall 41. FIG. 8 shows the opposite view with respect to FIG. 7, showing the transverse wall 35 of the bolt body. An alternate embodiment of a bolt 110 according to the present invention is shown in Figs. 9-11. A bolt 110 similar to the bolt 10 described above is provided, with the features described above, but having a different configuration with respect to its rear section. Spring installation means are provided which comprise an inclined portion of wall 138 that extends vertically along the inner portion of the vertical wall portion 116. The spring 129 in FIG. 9 is shown installed in the lock 110 in FIG. the space 134 formed between the transverse wall 135 of the bolt body 110 and the interior of the vertical wall portion 116. The first spring arm 130 is located closer to the transverse wall portion 135 by means of the inclined wall 138. The inclined wall portion 138 is engaged by the first spring arm 130 when the spring 129 is inserted into the bolt body 110. As shown in Fig. 10, the inclined wall portion has a cross-sectional thickness that goes increasing from the right side of the bolt towards the wall 141 of the projection 140. The projection 140 extends from the vertical wall 116 to partially surround the spring coils 133. Preferentially In addition, the inclined portion of the wall 138, in addition to being inclined in its entire lateral dimension in cross section, as shown in FIG. 10, has a vertical or longitudinal inclination, seen in cross-section in FIG. 11. Fig. 12, the cross-sectional thickness of the wall portion 138 decreases from the upper edge 142 of the wall portion 138, (where the wall portion has its maximum thickness), towards the lower end 143 of the wall portion which, preferably, joins the thickness of the vertical wall portion 116. Preferably, the wall portion 138 can be described geometrically, as shown in Fig. 12, with a triangular upper portion 144, an anterior portion 145, a lateral portion 146 attached to the side wall 141 of the projection 140, and a rear portion 147. It will be understood that the wall portion 138 may preferably be molded with the bolt body 110. It will be noted that the wall portion 138 may comprise a partial helical configuration. Fig. 13 shows another modification where, instead of a finger cavity, such as 19 shown in Fig. 1, the bolt 210 is provided with an upper projection for thumb and finger 219. The new impact bolt which has been described and illustrated has several advantages over the impact sliding locks of the prior art. Its manufacturing cost is low, due to its design as a single molded component of low cost plastic material. It is fast and simple, and also economical, to install because it does not require fastening devices, tools or hardware. Once installed, it should operate without mechanical defects because it does not incorporate any mechanical components that often fail, or clog, or malfunction. Installed, it has a neat and attractive appearance. From the outside of the installation, only the upper flange surface of the bolt with the handle cavity is visible. No screw or any other unsightly bra is displayed that degrade its appearance and style. In addition, the plastic material from which the bolt body is made is not subject to corrosion or deterioration under normal environmental conditions. Finally, the means for installing the spring facilitate the assembly of the bolt.

Claims (17)

1. CLAIMS 1. A bolt action type impact for installation in an opening in a door panel, characterized in that the bolt comprises: a. a bolt body having a recess formed at its forward end to cooperatively receive the leading edge of the panel opening; b. said bolt body having a vertical wall portion at its rear end, the upper end of the wall portion being spaced from the main bolt body portion and adapted to be bent forward during push-in of the latch body in the latch body. opening the panel and then quickly returning to its position to retain the bolt body in the opening of the panel; c. the bolt body also having a engaging portion with the frame at its front end; and d. spring means for directing the bolt body forward to its latching position; and. the spring means comprising an additional metal spring component carried by said bolt body in the space between the vertical wall portion and the main portion of the bolt body, the metal spring component being configured to engage with the rear edge of the bolt body. panel opening; and f. spring installation means for facilitating the installation of the spring member in position within the space between the vertical wall portion and the main bolt portion. The bolt of claim 1, characterized in that the spring installation means includes leverage means. The bolt of claim 2, characterized in that the spring member comprises a torsion spring having a first arm and a second arm which are connected by a series of spirals. The bolt of claim 3, characterized in that the leverage means includes means for engaging the first spring arm and raising the first spring arm away from the vertical wall portion and toward the main portion of the bolt body. The bolt of claim 4, characterized in that the vertical wall portion has an internal portion that faces the main portion of the bolt body, and wherein the leverage means comprises a rib projecting from the internal portion of the bolt body. vertical wall portion. The bolt of claim 5, characterized in that the rib is inclined. The bolt of claim 5, characterized in that the vertical wall portion includes a protruding portion extending into the space defined by the vertical wall and the main portion of the bolt body, said protruding portion partially surrounding the spring member. , and having at least one side wall, wherein the rib is inclined from a point along the internal portion of the vertical side wall in a direction toward said at least one side wall of the projecting portion of the vertical wall . The bolt of claim 5, characterized in that the rib extends laterally along the vertical wall portion from one side thereof to the center of the bolt. The apparatus of claim 8, characterized in that the rib has a portion tapered to one end thereof. The bolt of claim 4, characterized in that the leverage means includes a wall inclined portion in the vertical wall portion. The bolt of claim 10, characterized in that the vertical wall portion includes a protruding portion extending into the interior of the space defined by the vertical wall and the main portion of the bolt body, said protruding portion partially surrounding said bolt member. spring, and having at least one side wall, in which the inclined wall portion inclines towards the side wall of the projecting portion. 12. The lock of claim 11, characterized in that the inclined wall portion has a longitudinal dimension with respect to the vertical wall portion and is additionally inclined, the additional inclination being in the longitudinal direction, from a lower point along the vertical wall towards the upper part of the wall. vertical wall portion. The bolt of claim 3, characterized in that the spring installation means include means provided in the vertical wall portion for partially tightening the spring member relative to the compression of the spring member caused by the coupling with the rear edge of the panel, wherein the means for partially tightening the spring member includes adjustment means for gradually increasing the pressure in the spring member during its insertion in the bolt during installation. A method of assembling a bolt characterized in that it comprises the steps of: a) - providing a bolt having a vertical wall portion and a body portion, wherein the vertical wall is spaced from the body portion to define a space between the same; the vertical wall portion having means for raising a spring member; b) - providing a torsion spring member having at least one spring arm extending therefrom; c) - inserting the spring member into the space defined by the vertical wall and the bolt body; d) - wherein the step of inserting the spring member into the space includes moving the spring member along the leverage means and gradually tightening the spring member during its insertion; e) - completing the insertion of the spring member and allowing the spring member to remain partially depressed. The method of claim 14, characterized in that the leverage means includes a rib member disposed on the vertical wall portion, wherein the spring member has at least one arm, and wherein the step of moving the member of spring along the means of leverage includes coupling the spring arm member with the rib member. The method of claim 14, characterized in that the spring member has at least one arm, and wherein the step of moving the spring member along the leverage means includes engaging the arm of the spring member in a portion of the vertical wall member, which becomes thicker in relation to its original thickness on the side of the bolt where the spring is inserted into the space. A method of assembling a bolt according to claim, characterized in that the method comprises the steps of: a) - providing a bolt body; b) - providing a torsion spring member having at least one spring arm extending therefrom; c) - inserting the spring member into the space defined by the vertical wall and the bolt body; d) - wherein the step of inserting the spring member into the space includes moving the spring member along the spring installation means and gradually tightening the spring member when the spring member is inserted; e) - completing the insertion of the spring member and allowing the spring member to remain partially tightened. SUMMARY OF THE INVENTION A sliding action impact latch for securing a door panel, especially a hinged door panel, in a closed position with a bolt body constructed in one piece and carrying a spring that is installed therein; the bolt being installed in a single opening in the door panel and being self-retained therein. The bolt operates by means of a sliding action directed by the spring to engage with the door frame or a percussion plate. The spring predisposition is provided by means of a separate spring member and the bolt is additionally provided with a spring guide to facilitate the installation of the spring in the bolt. A method for bolt assembly is also provided.