Door latch device for vehicle

Abstract

A door latch device for a vehicle includes a door striker fixed to a vehicle body corresponding to a lower side of a door, a latch unit fixed to the lower side of the door, a pop-up guide unit fixed to the lower side of the door, a lock unit fixed to the door striker, and a door sag prevention bracket fixed to the door striker. The vehicle door is opened or closed by means of a hinge unit through double motion of ejection motion and swing motion; a latch unit mounted on a lower side of the door to lock or release the door striker; a pop-up guide unit that guides a lower side of the vehicle door through a vehicle door striker during a pop-up movement of the vehicle door; a locking unit that locks the door striker when the door is closed by the swing movement and the door striker enters the ejection guide unit; the door sag prevention bracket includes one end portion fixed to a main body of the latch unit, and extends toward the locking unit while being spaced apart from a top portion of the ejection guide unit.

Description

[0001] Cross - reference to related applications

[0002] This application claims the priority of Korean Patent Application No. 10 - 2024 - 0006588, filed on January 16, 2024, the entire content of which is incorporated herein for all purposes by this reference. Technical field

[0003] The present invention relates to a door latch device for a vehicle, and to such a door latch device for a vehicle that prevents a door from sagging when the door performs a closing operation by a swinging motion in a vehicle without a B - pillar. Background art

[0004] Generally, a vehicle door can separate the inside and outside of the vehicle, block external noises, rain, dust, wind, etc., and together with the side structure, perform an important function of absorbing impacts, thereby safely protecting passengers in the event of a side collision.

[0005] Vehicle doors come in various types, including special - purpose doors, and hinged swinging doors are most commonly applied to passenger vehicles.

[0006] Generally, a swinging door refers to a door that opens outward from the vehicle body around a hinge axis provided by a hinge bracket between the door and the vehicle body. Such a swinging door can be easily opened and closed, and has a simple structure, so it is easy to maintain and repair.

[0007] Meanwhile, some vehicles use double - acting swinging doors, which provide a large sense of openness when the doors are opened and are beneficial for passengers to enter and leave the vehicle.

[0008] Double - acting swinging doors can be divided into a type without a B - pillar and a type with a B - pillar.

[0009] As Figure 1 shown, existing double - acting swinging doors applied to vehicles without a B - pillar may include a front door 110 and a rear door 120. The front door 110 has a hinge axis installed at the front end of the vehicle body 100 and the front door 110, and the rear door 120 has a hinge axis installed at the rear end of the vehicle body 100 and the rear door 120.

[0010] In current double - acting swinging doors, a latch unit LC may be provided on one side of the front door 110 or the rear door 120 to maintain its locked state. As Figure 3 shown, the rear door 120 may include a door latch device 140 provided on the front - lower side thereof. The door latch device 140 may operate on a striker 150 fixed to one side of the vehicle body to maintain the locked state of the door.

[0011] Recently, a structure has been used in which the rear door is opened or closed mainly through the hinge unit 130 by means of a pop-up movement, a sliding movement, and a swinging movement, thus eliminating the guide rails at the top and bottom of the door. In the current structure, a fixing structure such as a latch can be applied to the top and bottom of the door, but it is impossible to prevent the door from sagging before the door fixing structure is fastened during the sliding movement.

[0012] As Figure 2 shown, when the rear door 120 sags, the bottom 122 of the rear door 120 may contact the side step cover 128 of the vehicle body (in area "B"), and the door may contact the part where the door latch device 140 and the door striker 150 installed in the rear door 120 are fastened to each other (in area "C"). This may cause damage to the door and result in the door reversing because the convex-concave connection of the upper stopper is not properly formed.

[0013] The information included in the background section of the present invention is only intended to enhance the overall understanding of the present invention and should not be construed as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Invention

[0014] Aspects of the present invention aim to provide a door latch device for a vehicle that prevents the door from sagging by further installing a door sag prevention bracket on the door latch device, thereby supporting the bottom of the door, and preventing damage to the door by preventing interference between the prevention bracket and a part of the door latch device, while ensuring smooth operation of the door.

[0015] According to an exemplary embodiment of the present invention, there is provided a door latch device for a vehicle, the device including: a door striker, a latch unit, a pop-up guide unit, a locking unit, and a door sag prevention bracket. The door striker is fixed to the vehicle body corresponding to the lower side of the door, and the door is opened or closed by means of a dual movement of a pop-up movement and a swinging movement through a hinge unit; the latch unit is installed on the lower side of the door to lock or release the door striker; the pop-up guide unit guides the lower side of the door through the door striker during the pop-up movement of the door; the locking unit locks the door striker when the door is closed by a swinging movement and the door striker enters the pop-up guide unit; the door sag prevention bracket includes one end fixed to the main body of the latch unit and extends toward the locking unit while being spaced apart from the top of the pop-up guide unit.

[0016] The latch unit can lock or release the door striker through a pawl rod and a ratchet rod provided on the main body.

[0017] The pop-up guide unit may include a guide groove formed by a first guide member and a second guide member, the first guide member and the second guide member being respectively formed on one side of the main body, and the pop-up guide unit may be moved to insert the door striker into the guide groove.

[0018] The locking unit may include a locking claw, a locking claw link, a locking pawl, and a release lever provided on the pop-up guide unit. When the door is closed by a swinging motion and the door striker enters the pop-up guide unit, the locking unit locks the door striker through the locking claw.

[0019] The door sag prevention bracket may include a first bracket, a second bracket, and a third bracket. Among them, the first bracket includes a first end and a second end. The first end is fixed to the upper surface of the main body of the latch unit and protrudes in a direction perpendicular to the main body, and the second end extends from the first end in a direction parallel to the main body; the second bracket extends integrally from the second end of the first bracket and is bent to extend while having a height lower than the vertical height of the second end of the first bracket; the third bracket extends integrally from the second bracket and extends toward the top of the locking unit while having a height higher than the vertical height of the second bracket.

[0020] The vertical height of the second bracket may be such that the bottom of the second bracket can contact the top of the door striker entering the pop-up guide unit.

[0021] The width of the second bracket may be smaller than the width of the top of the door striker.

[0022] The width of the third bracket may decrease in the direction in which the third bracket extends toward the locking unit.

[0023] A plurality of ribs may be formed on the bottom of the second bracket, extending in a direction perpendicular to the top of the door striker entering the pop-up guide unit and protruding toward the door striker.

[0024] A plastic coating may be formed on the upper surface of the door sag prevention bracket.

[0025] According to an exemplary embodiment of the present invention, in a vehicle without a B-pillar, when the door performs a closing operation by a swinging motion, the door sag in the height direction can be prevented by applying a door latch device further including a door sag prevention bracket that contacts the door striker.

[0026] In addition, the door latch device can prevent the door from sagging during the sliding movement section of the door, make the door operation smooth, and prevent damage to the door.

[0027] By incorporating the accompanying drawings herein and subsequently with the appendixFigure 1 Specific embodiments are used to illustrate certain principles of the present invention, and other features and advantages of the methods and devices of the present invention will become more specifically clear or be elucidated. Description of the Drawings

[0028] Figure 1 FIG. 1 is a side view of a vehicle using a pair of swing doors according to a conventional example.

[0029] Figure 2 FIG. 2 is a sectional view taken along line “A-A” in FIG. 1. Figure 1 in FIG. 1

[0030] Figure 3 FIG. 3 is a perspective view of the rear door of a pair of swing doors according to a conventional example.

[0031] Figure 4 FIG. 4 is a perspective view of a vehicle door latch device when the swinging movement of the door is completed according to an exemplary embodiment of the present invention.

[0032] Figure 5 FIG. 5 is a side view of a vehicle door latch device when the swinging movement of the door is completed according to an exemplary embodiment of the present invention.

[0033] Figure 6 FIG. 6 is a perspective view of a vehicle door latch device during the sliding movement of the door according to an exemplary embodiment of the present invention.

[0034] Figure 7 FIG. 7 is a side view of a vehicle door latch device during the sliding movement of the door according to an exemplary embodiment of the present invention.

[0035] Figure 8 FIG. 8 is a perspective view of a vehicle door latch device just before fastening the upper stop during the sliding movement of the door according to an exemplary embodiment of the present invention.

[0036] Figure 9 FIG. 9 is a side view of a vehicle door latch device just before fastening the upper stop during the sliding movement of the door according to an exemplary embodiment of the present invention.

[0037] Figure 10 FIG. 10 is a perspective view of a vehicle door latch device after the sliding movement of the door is completed according to an exemplary embodiment of the present invention.

[0038] Figure 11 FIG. 11 is a side view of a vehicle door latch device after the sliding movement of the door is completed according to an exemplary embodiment of the present invention.

[0039] Figure 12An enlarged perspective view of a door sag prevention bracket portion of a door latch device for a vehicle according to an exemplary embodiment of the present invention.

[0040] Figure 13 A perspective view showing the door sag prevention bracket portion of the door latch device for a vehicle according to an exemplary embodiment of the present invention as viewed from below.

[0041] It should be understood that the drawings are not necessarily drawn to scale, but rather show a somewhat simplified representation of the various features that illustrate the basic principles of the present invention. The specific design features of the present invention included herein (including, for example, specific dimensions, orientations, positions, and shapes) will be determined in part by the specific target application and the environment of use.

[0042] In these figures, throughout the several views of the drawings, like reference numerals represent the same or equivalent components of the present invention. Detailed Description of the Invention

[0043] Hereinafter, various specific embodiments of the present invention will be described in detail. Examples of these specific embodiments are shown in the drawings and described as follows. Although the present invention will be described in conjunction with the exemplary embodiments of the present invention, it should be realized that this specification is not intended to limit the present invention to those exemplary embodiments. On the other hand, the present invention is intended to cover not only the exemplary embodiments of the present invention, but also various alternative forms, modifications, equivalent forms, and other embodiments that may be included within the spirit and scope of the present invention as defined by the appended claims.

[0044] Hereinafter, various exemplary embodiments of the present invention will be described in detail with reference to the drawings, so that those skilled in the art to which the present invention pertains can easily implement the present invention. The present invention can be modified in various different forms and is not limited to the exemplary embodiments provided in the specification.

[0045] In addition, in various exemplary embodiments of the present invention, components including the same configuration are representatively described using the same reference numerals in the exemplary embodiments of the present invention, while only the components different from the exemplary embodiments are described in other embodiments.

[0046] It should be understood that the drawings are schematic and not drawn to scale. For clarity and convenience in the drawings, the sizes and proportions of components in the drawings are relatively enlarged or reduced. This arbitrary size is illustrative only and not restrictive. In addition, the same reference numerals are used to denote similar features of the same structure, element or component shown in two or more drawings. When a component is referred to as being on or above another component, it should be understood that the component can be directly on the other component or can be above the other component with a third component interposed therebetween.

[0047] The exemplary embodiments of the present invention specifically represent the exemplary embodiments of the present invention. Accordingly, the schematic drawings can be variously modified. Correspondingly, the exemplary embodiments of the present invention are not limited to the specific shapes of the portions shown and can include, for example, shapes modified during production.

[0048] Hereinafter, the structure of a door latch device for a vehicle according to an exemplary embodiment of the present invention will be described in detail with reference to the drawings. When describing the exemplary embodiments of the present invention, for ease of explanation, by defining Figure 6 the upper left side of Figure 6 as the front portion and defining the lower right side of

[0049] Figure 4 as the rear portion to provide the description. In addition, the door latch device for a vehicle according to an exemplary embodiment of the present invention can be provided on two rear doors behind the driver's seat and the passenger seat of the vehicle, and an example in which the door latch device of the exemplary embodiment of the present invention is applied to the rear door behind the passenger seat is described. Figure 5 FIG. is a perspective view of a door latch device for a vehicle when the swinging movement of the door is completed according to an exemplary embodiment of the present invention.

[0050] The door latch device for a vehicle according to an exemplary embodiment of the present invention can be applied to the rear doors of a passenger vehicle without a B-pillar. That is, the door latch device can be provided between one side of the front lower portion of the rear door and the corresponding vehicle body, and the rear door is opened or closed by a dual movement of a pop-up movement and a swinging movement by means of a hinge unit.

[0051] Referring to Figure 4 and Figure 5 , the door latch device 10 for a vehicle according to an exemplary embodiment of the present invention can include a door striker 11, a latch unit 20, a pop-up guide unit 50, a locking unit 70, and a door sag prevention bracket 200.

[0052] The door impact member 11 can be fixed to the vehicle body corresponding to one side of the front lower part of the rear door through a fixing bracket 13, and the rear door is opened or closed by means of a double movement of a pop-up movement and a swinging movement by means of a hinge unit.

[0053] The latch unit 20 can be provided on one side of the front lower part of the rear door and configured to lock or release the door impact member 11, thereby keeping the rear door closed or opening the rear door.

[0054] The latch unit 20 can include a main body, a pawl rod and a ratchet rod provided on the main body, and an operating rod.

[0055] The latch unit 20 can be formed with a cutout on one side of the front lower part of the inner panel of the rear door and can be provided therein to act on the door impact member 11 on the vehicle body.

[0056] During the pop-up movement of the door, the pop-up guide unit 50 can guide the lower side of the door through the door impact member 11.

[0057] The pop-up guide unit 50 can include a first guide member 51 integrally formed with one front side of the main body, and a second guide member 53 integrally formed with the other front side of the main body, and at the same time includes a guide groove 300 in which the second guide member 53 is spaced apart from the first guide member 51 by a predetermined distance.

[0058] The guide groove can facilitate the entry of the door impact member 11 through an inlet included between the first guide member 51 and the second guide member 53, and the distance of the inlet between the first guide member 51 and the second guide member 53 is greater than the predetermined distance of the guide groove 300.

[0059] Here, the first guide member 51 can be longer than the second guide member 53, and the inlet for guiding the door impact member 11 to enter is guided to the outside of the vehicle body.

[0060] When the door is closed by a swinging movement, in the case where the door impact member 11 enters the pop-up guide unit, the locking unit 70 can lock the door impact member 11. Even in the case where a force greater than required is applied to the door when the rear door performs a closing operation by a swinging movement, the locking unit 70 can prevent the rear door from rebounding from the door impact member 11.

[0061] The locking unit 70 can include a locking pawl, a locking pawl link, a locking ratchet, and a release lever. When the rear door performs a closing operation by a swinging action, in the case where the door impact member 11 enters the pop-up guide unit 50, the locking pawl can prevent the rear door from leaving in the rebounding direction by locking the door impact member 11.

[0062] The door sag prevention bracket 200 may have one end fixed to the body of the latch unit 20 and may extend toward the locking unit 70 while being spaced apart from the top of the pop-up guide unit 50.

[0063] The door sag prevention bracket 200 may include three parts: a first bracket 230, a second bracket 220, and a third bracket 210.

[0064] The first bracket 230 may have one end fixed to the upper surface of the body of the latch unit 20 and protruding in a direction perpendicular to the body. The other end of the first bracket 230 may be bent from its end and extend in a direction parallel to the body.

[0065] The second bracket 220 may extend integrally from the other end of the first bracket 230 and may be bent to extend while having a height lower than the vertical height of the other end of the first bracket 230.

[0066] The third bracket 210 may extend integrally from the second bracket 220 and extend toward the top of the locking unit 70 while having a height higher than the vertical height of the second bracket 220.

[0067] When the door striker 11 is disposed in Figure 5 the area “D”, the top of the door striker 11 may contact the bottom of the second bracket 220 of the door sag prevention bracket 200, preventing the door latch device 10 and the door from sagging downward.

[0068] To this end, the vertical height of the second bracket 220 may be such that the bottom of the second bracket 220 can contact the top of the door striker 11 entering the pop-up guide unit 50.

[0069] At the same time, the width of the second bracket 220 may be smaller than the width of the top of the door striker 11, and the width of the third bracket 210 may decrease in the direction in which the third bracket 210 extends toward the locking unit 70.

[0070] Figure 6 A perspective view of a vehicle door latch device during the sliding movement of a door according to an exemplary embodiment of the present invention, Figure 7 A side view of a vehicle door latch device during the sliding movement of a door according to an exemplary embodiment of the present invention.

[0071] Refer to Figure 6 and Figure 7, when the rear door starts to slide, the door striker 11 can enter the entrance of the guide groove 300 and slide along the guide groove 300, thereby pushing one side of the release lever backward, thus causing the release lever to rotate. The rod end can thus push the locking pawl, causing the locking pawl to rotate.

[0072] In the current situation, the top of the door striker 11 can contact the bottom of the second bracket 220 of the door anti-drop bracket 200. Therefore, the door latch device 10 and the door can be prevented from drooping downward by the supporting force of the door anti-drop bracket 200.

[0073] Figure 8 A perspective view of a vehicle door latch device just before the fastening upper stop during the sliding movement of the door according to an exemplary embodiment of the present invention. Figure 9 A side view of a vehicle door latch device just before the fastening upper stop during the sliding movement of the door according to an exemplary embodiment of the present invention.

[0074] In the current situation, the top of the door striker 11 can pass by the second bracket of the door anti-drop bracket and be disposed below the first bracket 230. The vertical height of the first bracket 230 can be higher than the height of the top of the door striker 11, thereby preventing the first bracket 230 and the door striker 11 from contacting each other. The section where the door striker 11 is disposed at the bottom of the first bracket 230 can be the section where the upper stop is connected.

[0075] The total length of the door anti-drop bracket 200 can be adjusted based on the length of the door latch device 10, and the contact section of the door anti-drop bracket 200, i.e., the length of the second bracket 220, can also be adjusted as needed.

[0076] Figure 10 A perspective view of a vehicle door latch device after the sliding movement of the door is completed according to an exemplary embodiment of the present invention. Figure 11 A side view of a vehicle door latch device after the sliding movement of the door is completed according to an exemplary embodiment of the present invention.

[0077] In the current situation, after the rear door completes the sliding movement, the door striker 11 can be locked into the locking groove of the pawl rod of the latch unit 20. As the door striker 11 completely passes by the release lever, the locking pawl and the release lever can return to their initial positions by the locking pawl spring and the rod spring respectively. Therefore, the rear door can complete the closing operation through the swinging movement and the sliding movement.

[0078] Figure 12An enlarged perspective view of a door sag prevention bracket portion of a door latch device for a vehicle according to an exemplary embodiment of the present invention Figure 13 A perspective view showing the door sag prevention bracket portion of the door latch device for a vehicle according to an exemplary embodiment of the present invention as viewed from below

[0079] Referring to Figure 12 ,the upper surface of the door sag prevention bracket 200 may include a plastic coating 225. The plastic coating may be applied to the corresponding surface to prevent noise caused by friction occurring between the door striker 11 and the door sag prevention bracket 200

[0080] The exterior of the door latch device 10 may be wrapped by a housing. As the door striker 11 and the door sag prevention bracket 200 come into contact with each other, when the door sag prevention bracket 200 moves up and down, friction noise may be generated when the inner surface of the housing comes into contact with the door sag prevention bracket 200. Therefore, in order to prevent the current noise, a plastic coating 225 made of a soft material may be formed on the upper surface of the door sag prevention bracket 200

[0081] Referring to Figure 13 ,a plurality of ribs 227 may be formed on the bottom of the second bracket 220 of the door sag prevention bracket 200 and protrude toward the door striker 11. The plurality of ribs 227 may extend in the traveling direction of the door striker 11. That is, the plurality of ribs 227 may extend in a direction perpendicular to the top of the door striker 11 entering the ejection guide unit 50. Both ends of the plurality of ribs 227 may be rounded

[0082] The plurality of ribs 227 may minimize the friction that occurs when the bottom of the second bracket 220 of the door sag prevention bracket 200 comes into contact with the top of the door striker 11

[0083] As described above, according to an exemplary embodiment of the present invention, in a vehicle without a B-pillar, when the door performs a closing operation by a swinging motion, door sag in the height direction may be prevented by applying a door latch device further including a door sag prevention bracket that comes into contact with the door striker

[0084] In addition, the door latch device may prevent the door from sagging during the sliding movement section of the door, make the door operation smooth, and prevent damage to the door

[0085] In an exemplary embodiment of the present invention, a vehicle may be referred to based on a concept that includes various transportation means. In some cases, a vehicle may be interpreted based on such a concept that includes not only various land transportation means traveling on roads, such as cars, motorcycles, trucks, and buses, but also various transportation means such as airplanes, drones, ships, etc.

[0086] For the convenience of explanation and to precisely define the appended claims, the terms "upper", "lower", "inner", "outer", "above", "below", "upward", "downward", "front", "rear", "back", "inner side", "outer side", "inwardly", "outwardly", "interior", "exterior", "internal", "external", "forward", "backward" are used to describe the features of the exemplary specific embodiments with reference to the positions of these features shown in the accompanying drawings. It will be further understood that the term "connected" or its derivatives refer to both direct connection and indirect connection.

[0087] The term "and / or" may include combinations of multiple related listed items or any one of the multiple related listed items. For example, "A and / or B" includes all three cases, namely "A", "B", and "A and B".

[0088] In an exemplary embodiment of the present invention, "at least one of A and B" may refer to "at least one of A or B" or "at least one of the combination of at least one of A and B". In addition, "one or more of A and B" may refer to "one or more of A or B" or "one or more of the combination of one or more of A and B".

[0089] In this specification, unless otherwise specified, singular expressions include plural expressions, unless the context clearly indicates otherwise.

[0090] In an exemplary embodiment of the present invention, it should be understood that terms such as "comprising" or "having" are intended to specify the presence of the features, numerical values, steps, operations, elements, components, or combinations thereof described in the specification, and do not exclude the possibility of adding or existing one or more other features, numerical values, steps, operations, elements, components, or combinations thereof.

[0091] According to an exemplary embodiment of the present invention, components may be combined with each other to be implemented as one, or some components may be omitted.

[0092] The foregoing description of the specific exemplary embodiments of the present invention has been presented for purposes of illustration and description. The foregoing description is not intended to be exhaustive nor to limit the invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teachings. The exemplary specific embodiments were chosen and described in order to explain specific principles of the invention and their practical application so as to enable others skilled in the art to make and utilize various exemplary specific embodiments of the invention and their various alternative forms and modifications. The scope of the invention is intended to be defined by the appended claims and their equivalents.

Claims

1. A door latch device for a vehicle, comprising: A door striker, which is fixed to the vehicle body corresponding to the lower side of the door, and the door is opened or closed by a dual movement of a pop-up movement and a swing movement by means of a hinge unit; A latch unit, which is installed on the lower side of the door to lock or release the door striker; A pop-up guide unit, which guides the lower side of the door through the door striker during the pop-up movement of the door; A locking unit, which locks the door striker in response to the door striker entering the pop-up guide unit when the door is closed by a swing movement; And A door sag prevention bracket, which includes one end fixed to the main body of the latch unit and extends toward the locking unit while being spaced apart from the top of the pop-up guide unit.

2. The door latch device for a vehicle according to claim 1, wherein, The latch unit locks or releases the door striker through a pawl rod and a ratchet rod provided on the main body.

3. The door latch device for a vehicle according to claim 1, wherein, The pop-up guide unit includes a guide groove formed by a first guide member and a second guide member, the first guide member and the second guide member are each formed on one side of the main body, and the pop-up guide unit is moved to insert the door striker into the guide groove.

4. The door latch device for a vehicle according to claim 1, wherein, The locking unit includes a locking pawl, a locking pawl link, a locking ratchet, and a release rod provided on the pop-up guide unit. When the door is closed by a swing movement, in response to the door striker entering the pop-up guide unit, the locking unit locks the door striker through the locking pawl.

5. The door latch device for a vehicle according to claim 1, wherein, The door sag prevention bracket includes: A first bracket, which includes a first end and a second end, the first end is fixed to the upper surface of the main body of the latch unit and protrudes in a direction perpendicular to the main body, and the second end extends from the first end in a direction parallel to the main body; A second bracket, which extends integrally from the second end of the first bracket and is bent to extend while having a vertical height lower than the vertical height of the second end of the first bracket; and A third bracket, which extends integrally from the second bracket and extends toward the top of the locking unit while having a height higher than the vertical height of the second bracket.

6. The door latch device for a vehicle according to claim 5, wherein, The vertical height of the second bracket is such that the bottom of the second bracket can contact a part of the door striker entering the pop-up guide unit.

7. The door latch device for a vehicle according to claim 5, wherein, The vertical height of the first bracket is higher than the vertical height of the top of the door striker, thereby preventing the first bracket and the door striker from contacting each other.

8. The door latch device for a vehicle according to claim 6, wherein, The width of the second bracket is smaller than the width of the top of the door striker.

9. The door latch device for a vehicle according to claim 8, wherein, The width of the third bracket decreases in the direction in which the third bracket extends toward the locking unit.

10. The door latch device for a vehicle according to claim 6, wherein, At least one rib is formed on the bottom of the second bracket, extends in a direction perpendicular to the top of the door striker entering the pop-up guide unit, and protrudes toward the door striker.

11. The door latch device for a vehicle according to claim 5, wherein, A plastic coating is formed on the upper surface of the door sag prevention bracket.

12. The door latch device for a vehicle according to claim 11, wherein, The plastic coating is formed on the surface of the door sag prevention bracket where friction is generated between the door sag prevention bracket and the door striker.

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