Gearbox mount for a vehicle having distributed stoppers

Abstract

A transmission mount (1) for a vehicle, comprising: a holding part (40) which has received an insulating element (50) having an outer core (70) coupled to an inner core (60), and which has an upper housing (41) covering an upper part of the insulating element (50) and a plate (42) supporting a lower portion of the insulating element (50), and the outer core (70) which, based on the inserted inner core (60), has a lower portion (71), an upper portion (72), two lateral portions (74), two bridge portions (75) supporting a body of the outer core (70), and a lower main stopper (76) formed on an upper surface of the plate (42), wherein a space portion is formed in the body of the outer core (70), wherein a rod (43) projecting from a rear surface of the upper housing (41) of the holding part (40) is arranged to be inserted into the space portion, and wherein inner wall surfaces of the space portion respectively contact an upper portion (72), a lower portion (71) and a front portion of the rod (43), wherein an inner wall surface auxiliary stopper (73a) is formed from an inner wall surface (73) facing the end surface of the rod (43) of the space portion formed in the outer core (70) toward the end surface of the rod (43).

Description

Background of the inventionField of the invention

[0001] The present invention relates to a transmission mount for a vehicle (e.g., a motor vehicle), and more particularly, to a transmission mount for a vehicle, comprising: a holding part that houses an isolating part (e.g., a vibration isolating part) having an outer core (e.g., an outer part of the isolating part) coupled to an inner core (e.g., an inner part of the isolating part), and having an upper case covering an upper portion of the isolating part and a plate supporting a lower portion of the isolating part, and the outer core having, based on the inserted inner core, a lower portion, an upper portion, two lateral portions, two bridge portions supporting a body of the outer core (which is formed by, e.g., the lower portion, the upper portion, and the two lateral portions), and a lower main stopper (e.g., a main stopper element, e.g., a stopper).support member) formed on an upper surface of the plate, wherein a space portion (e.g., a recess) is formed in the body of the outer core such that a rod projecting from a rear surface of the upper housing of the holding part is inserted into the space portion, and wherein inner wall surfaces of the space portion come into contact with an upper portion, a lower portion, and a front portion of the rod, respectively. Description of the state of the art

[0002] In general, a transmission mount refers to a component configured to connect a driveline (e.g., a vehicle transmission) and a vehicle body, support the weight of the driveline, control displacement (e.g., of the transmission / driveline), and prevent driveline vibration noise from being transmitted to the vehicle body.

[0003] Fig. 1 and Fig. 2 are views of a configuration of a gear holder of the prior art, and an insulating member 20 having an outer core 22 to which an inner core 21 is coupled is accommodated in a holding part 10 having holding arms 11, 12 and 13 formed in respective directions.

[0004] In the present case, the outer core 22, which supports the inner core 21 of the insulating member 20, has a lower portion 22a, an upper portion 22b, and two lateral portions 22c and 22d, and the lower portion 22a dampens omnidirectional vibrations while contacting a lower stopper 31, an upper stopper 32, a first-side stopper 33, and a second-side stopper 34 formed in a housing of the insulating member.

[0005] However, the previous transmission mounts were mainly developed for the function of damping vibrations, but a newer design of a stopper structure is considered more important for ride quality and handling performance (hereinafter referred to as R&H performance).

[0006] Techniques for improving a stopper function of the gear bracket are disclosed in JP 2012 - 116 242 A, JP 2006 - 177 544 A, US 2016 / 238 102 A1 and JP 2003 / 202 053 A, but the techniques are limited in sufficiently realizing the R&H performance.

[0007] The information disclosed in this "Background of the Invention" section is provided for the sole purpose of facilitating an understanding of the general background of the invention and is not intended as an acknowledgement or any form of suggestion that this information constitutes prior art already known to those skilled in the art.

[0008] For example, from JP 2012 - 202 418 A, a motor mount is known, comprising: a holding part which accommodates an insulating member having an outer core coupled to an inner core, and which has an upper casing covering an upper part of the insulating member, and a plate supporting a lower portion of the insulating member, and the outer core, which has, based on the inserted inner core, a lower portion, an upper portion, two lateral portions, two bridge portions supporting a body of the outer core, and a lower main stopper formed on an upper surface of the plate, wherein a space portion is formed in the body of the outer core, wherein a flange member is adapted to be inserted into the space portion, and wherein inner wall surfaces of the space portion each have an upper portion,contact a lower section and a front section of the flange element.,

[0009] Furthermore, a gearbox mount is known, for example, from JP 2009 - 298 316 A. Explanation of the invention

[0010] The present invention is directed to providing a configuration of a transmission mount (hereinafter referred to as a transmission mount) configured to execute an actuation (e.g., load, e.g., by vibration) of an auxiliary stopper (e.g., a stopper element, e.g., a stop or support element; hereinafter referred to as an auxiliary stopper) in respective directions and the actuation (e.g., load, e.g., by vibration) of a main stopper (e.g., a stopper element, e.g., a stop or support element) in respective directions with respect to vibrations transmitted in an up-down direction, a front-back direction, and a left-right direction.

[0011] According to the invention, a transmission mount having the features of claim 1 is provided. Further embodiments are described in the dependent claims. That is, a transmission mount (e.g. for a vehicle transmission) according to the invention for a vehicle (e.g. a motor vehicle) comprises: a holding part which has an insulating element (e.g. a damping element) accommodated (e.g. therein, e.g. at least substantially therein), which has an outer core (e.g. an outer part of the insulating element) coupled to an inner core (e.g. an inner part of the insulating element), and which has an upper housing covering an upper part of the insulating element and a plate supporting a lower portion of the insulating element, and the outer core, which, based on the inserted inner core, has a lower portion, an upper portion, two lateral portions, two bridge portions (which, e.g.,first) main stopper, e.g. a stopper element, e.g. abutment or support element) supporting a body of the outer core (which is formed e.g. by the lower portion, the upper portion and the two lateral portions), and a lower (e.g. second) main stopper (e.g. a stopper element, e.g. abutment or support element) formed on an upper surface of the plate, wherein a space portion (e.g. a recess) is formed in the body of the outer core, wherein a rod protruding from a rear surface of the upper housing of the holding part is adapted to be inserted into the space portion, and wherein inner wall surfaces of the space portion contact an upper portion, a lower portion and a front portion of the rod, respectively.Further, an inner wall surface auxiliary stopper is formed from an inner wall surface facing the end surface of the rod of the space portion formed in the outer core toward the end surface of the rod.

[0012] The transmission mount of the present invention having this configuration is a very advanced invention in that the auxiliary stoppers and the main stopper are actuated (e.g., loaded) in the corresponding directions with respect to the vibrations transmitted in the up-down direction, the front-back direction, and the left-right direction, and the distributed stoppers (e.g., main and auxiliary stoppers) can be actuated in the corresponding directions, and thus it is possible to improve the noise vibration harshness performance (NVH performance) of the vehicle and the R&H performance of the vehicle.

[0013] The devices of the present invention have other features and advantages which will be more clearly understood from, and pointed out in more detail by, the accompanying drawings incorporated herein and the following detailed description, which together serve to describe certain principles of the present invention. Short description of the drawings Fig. 1 is a perspective view of a prior art transmission mount. Fig. 2 is a cross-sectional view of the prior art gear mount. Fig. 3 is a perspective view of a transmission mount according to an exemplary embodiment of the present invention. Fig. 4 and Fig. 5 are cross-sectional views of the transmission mount according to an exemplary embodiment of the present invention, wherein the Fig. 4 a cross-sectional view along line AA' of the Fig. 3 and the Fig. 5 a cross-sectional view along the line BB' of the Fig. 4 is. Fig. 6 to 8 are views showing states in which the gear bracket according to an exemplary embodiment of the present invention is actuated (e.g., loaded).

[0014] It should be understood that the attached drawings are not necessarily to scale and represent a somewhat simplified representation of various features illustrating the basic principles of the invention. The specific constructional features of the present invention, including, but not limited to, specific dimensions, directions, positions, and shapes disclosed herein, will be dictated in part by the particular intended application and usage environment.

[0015] Throughout the numerous figures of the drawing, reference numerals in the figures designate the same or essentially equivalent parts of the present invention. Detailed description

[0016] Reference will now be made in detail to various embodiments of the present invention, examples of which are illustrated in the accompanying drawings and described below. Although the invention has been described in connection with the exemplary embodiments, it is to be understood that the present description is not intended to limit the invention to these exemplary embodiments. Unless defined to the contrary, the terms used in the description of the present invention have the meanings typically understood by those skilled in the art to which the present invention pertains, and in the following description and the accompanying drawings, detailed description of publicly known functions and configurations is omitted to avoid unnecessarily obscuring the subject matter of the present invention.

[0017] The Fig. 3 is a perspective view of a gear mount of the present invention.

[0018] A gear holder 1 of the present invention is configured wherein an insulating member 50 having an inner core 60 and an outer core 70 is accommodated in a holding member 40.

[0019] The holding part 40 has an upper housing 41 which covers an upper portion of the insulating part 50 and a plate 42 which supports a lower portion of the insulating part 50.

[0020] The gear bracket 1 of the present invention configured as described above has a structure including stopper portions distributed in respective directions used in the holding part.

[0021] With this distributed stopper structure, it is possible to distribute compressive loads of the stoppers caused by excessive movement of an engine (e.g., an internal combustion engine) when vibrations occur, e.g., when the vehicle is running on a rough road and when the vehicle is handled, and consequently, it is possible to control movement of the vehicle and improve durability (of the vehicle, e.g., the transmission mount).

[0022] A detailed configuration of the gear bracket of the present invention configured as described above will now be described.

[0023] The Fig. 4 and Fig. 5 are cross-sectional views of the gear mount of the present invention, wherein the Fig. 4 a cross-sectional view along the line AA' of the Fig. 3 and where the Fig. 5 a cross-sectional view along the line BB' of the Fig. 4 is.

[0024] First, referring to the Fig. 4, the upper housing 41 of the gear holder of the present invention has a trapezoidal shape, which includes an upper surface 41a covering the upper portion of the insulating member 50, a rear surface 41b covering a rear surface of the insulating member 50, and lateral surfaces 41c covering left and right surfaces of the insulating member 50, respectively (see also Fig. 5).

[0025] In the present case, a rod 43, which projects from the rear surface 41b in a direction perpendicular to the rear surface 41b, is formed at (e.g., on) an intermediate portion (e.g., central portion) of the rear surface 41b of the upper case.

[0026] The rod 43 is a portion which the stoppers having a distributed structure contact due to the vibration, and the rod 43 may have a rectangular parallel column shape.

[0027] The inner core 60 of the insulating member 50 of the present invention is coupled to the outer core 70, and a lower support 61 (e.g., a lower support portion) and an upper support 62 (e.g., an upper support portion) are arranged in the outer core 70 (e.g., to support the inner core 60, e.g., to connect to the outer core), and the inner core 60 comprises a typical metal material.

[0028] Next, referring to the Fig. 5, the outer core 70 of the insulating part 50 of the present invention has a lower portion 71 which defines a lower end portion based on the inner core 60 inserted into a body (e.g., the outer core), an upper portion 72 which defines an upper end portion, two lateral portions 74 which define two lateral (end) portions, two bridge portions 75 which support the body (which is formed, e.g., by the lower portion, the upper portion, and the two lateral portions) of the outer core 70, and a lower main stopper 76 which projects upward from an upper surface of the plate 42 of the holding part 40, and the outer core 70 has a typical rubber material (e.g., the lower, the upper, and / or the two lateral portions 71, 72, 74 of the outer core 70 form a first main stopper which, e.g., upon actuation (e.g., load), stops the housing or the lower (e.g.second) main stopper 76).

[0029] A space portion (e.g., a recess) recessed inwardly (e.g., inside) from the rear surface of the outer core 70 is formed, wherein the rod 43 may be inserted into the center of the body of the outer core 70, and a distributed stopper structure is formed as inner wall surfaces of the space portion, which contact an upper portion, a lower portion, and a front portion of the rod 43, respectively.

[0030] Therefore, in order to obtain the distributed stopper structure, a lower auxiliary stopper 71a is formed to protrude upward from an upper surface of the lower portion 71 of the outer core 70, an upper auxiliary stopper 72a is formed to protrude gradually downward from a bottom surface of the upper portion 72 of the outer core 70, lateral auxiliary stoppers 74a and 74b are formed to protrude gradually toward the center (e.g., the outer core, e.g., the recess) from inner walls of the lateral portions 74 of the outer core 70, and an inner wall surface auxiliary stopper 73a is formed to protrude gradually toward an end surface of the rod 43 from an inner wall surface 73 facing the end surface of the rod 43 of the space portion formed in the outer core 70. to lead.

[0031] The auxiliary stoppers 71a, 72a, 73a, 74a and 74b are arranged to distribute respective stopping functions by assisting the main stopper which is actuated (e.g., loaded) between the outer core 70 and the upper housing 41.

[0032] The following describes operations (e.g., loads) of the gear holder of the present invention, which has the auxiliary stoppers. Fig. 6, Fig. 7 and Fig. 8 are views showing states in which the gear bracket of the present invention is actuated (e.g., loaded).

[0033] First, referring to the Fig. 5 and Fig. 6, when vibrations in the up-down direction are transmitted to the gear mount of the present invention through the inner core 60, the lower portion 71 of the outer core 70 contacts the lower main stopper 76 formed on the upper surface of the plate 42 (see FIG. Fig. 5), and the upper portion 72 of the outer core 70 contacts the upper surface 41a of the upper housing 41 (cf. Fig. 5), and as a result, the main stopper (e.g., the upper and lower portions 71, 72 of the outer core) is actuated (e.g., loaded) in the up-down direction.

[0034] Along with the operations of the main stopper in the up-down direction as described above, the lower auxiliary stopper 71a of the lower portion 71 of the outer core 70 contacts a bottom surface (e.g., lower surface) of the rod 43, and the upper auxiliary stopper 72a of the upper portion 72 of the outer core 70 contacts an upper surface of the rod 43, the auxiliary stoppers are simultaneously operated (e.g., loaded) in the up-down direction, and as a result, the distributed stoppers are operated (e.g., loaded) along with the operation of the main stopper in the up-down direction.

[0035] Next, referring to the Fig. 5 and Fig. 7, when vibrations in the front-to-rear direction are transmitted to the gear mount of the present invention through the inner core 60, the lateral portions 74 of the outer core 70 respectively contact the lateral surfaces 41c of the upper case 41 (see FIG. Fig. 5), and as a result, the main stopper (e.g., the lateral portions 74 of the outer core 70) is configured to be actuated (e.g., loaded) in the front-to-back direction.

[0036] Together with the operations of the main stopper in the front-to-back direction, the lateral auxiliary stoppers 74a and 74b of the lateral portion 74 of the outer core 70 contact both lateral surfaces of the rod 43, the auxiliary stoppers being simultaneously operated (e.g., loaded) in the front-to-back direction, and as a result, the distributed stoppers are operated (e.g., loaded) together with the operation of the main stopper in the front-to-back direction.

[0037] Next, referring to the Fig. 4, Fig. 5 and Fig. 8, when vibrations in the left-right direction are transmitted to the gear bracket of the present invention through the inner core 60, the lower portion 71, the upper portion 72, the lateral portions 74, and the bridge portions 75 of the outer core 70 contact the rear surface 41b of the upper case 41 (see FIG. Fig. 4 and Fig. 5), wherein the main stopper (which is formed, for example, from the lower, the upper, the two lateral sections and / or the two bridge sections 71, 72, 74, 75) is / is actuated (e.g. loaded) in the left-right direction.

[0038] Along with the operations of the main stopper in the left-right direction, the inner wall surface auxiliary stopper 73a formed on the inner wall surface 73 facing the end surface of the rod 43 of the space portion formed in the outer core 70 contacts the end surface of the rod 43, whereby the auxiliary stoppers are operated (e.g., loaded) in the left-right direction.

[0039] According to the transmission mount of the present invention, which is actuated (e.g., loaded) as described above, both the auxiliary stopper(s) and the main stopper (e.g., the main stopper and the lower main stopper) are actuated (e.g., loaded) in the respective directions with respect to the vibrations transmitted in the up-down direction, the front-rear direction, and the left-right direction, the distributed stoppers can be actuated (e.g., loaded) in the respective directions, and as a result, it is possible to improve the NVH performance of the vehicle and the R&H performance of the vehicle.

[0040] For ease of explanation and to accurately define the appended claims, the terms "upper...", "lower...", "inner...", "outer...", "top", "bottom", "upward", "downward", "front...", "backward...", "front", "backward", "inside", "outside", "inwardly", "outwardly", "forwardly" and "backwardly" are used to describe features of the exemplary embodiments with reference to positions of those features shown in the drawings.

[0041] The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the invention to the precise forms disclosed.

Claims

[1] A gearbox mount (1) for a vehicle, comprising: a holding part (40) which has received an insulating element (50) having an outer core (70) coupled to an inner core (60), and which has an upper housing (41) covering an upper part of the insulating element (50) and a plate (42) supporting a lower portion of the insulating element (50), and the outer core (70) which, based on the inserted inner core (60), has a lower portion (71), an upper portion (72), two lateral portions (74), two bridge portions (75) supporting a body of the outer core (70), and a lower main stopper (76) formed on an upper surface of the plate (42), wherein a space portion is formed in the body of the outer core (70), wherein a rod (43) projecting from a rear surface of the upper housing (41) of the holding part (40) is arranged to be inserted into the space portion, and wherein inner wall surfaces of the space portion respectively contact an upper portion (72), a lower portion (71) and a front portion of the rod (43), wherein an inner wall surface auxiliary stopper (73a) is formed from an inner wall surface (73) facing the end surface of the rod (43) of the space portion formed in the outer core (70) toward the end surface of the rod (43). [2] The transmission mount according to claim 1, wherein the upper case (41) has an upper surface (41a) covering the upper portion (72) of the insulating member (50), a rear surface (41b) covering a rear surface of the insulating member (50), and lateral surfaces (41c) covering left and right surfaces of the insulating member (50), respectively. [3] The gear bracket according to claim 1 or 2, wherein a lower auxiliary stopper (71a) is formed to protrude upward from the upper surface of the lower portion (71) of the outer core (70). [4] The gear bracket according to any one of the preceding claims, wherein an upper auxiliary stopper (72a) is shaped to project downward from a bottom surface of the upper portion (72) of the outer core (70). [5] The gear holder according to any one of the preceding claims, wherein lateral auxiliary stoppers (74a, 74b) are formed from inner walls of the lateral portions (74) of the outer core (70) toward the center.

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