Structure of transmission mount

Abstract

A transmission mount installed in a vehicle body in order to support the weight of a transmission includes a housing bracket including a housing having stopper-fixing holes and stopper-position-fixing portions, a stopper having insertion-protruding portions formed so as to be inserted into the stopper-position-fixing portions, fixing pieces formed so as to be inserted into the stopper-fixing holes and curled, and fixing holes formed near the fixing pieces, and an inner steel member having protruding pieces formed so as to be inserted into the fixing holes formed in the stopper. The stopper contacts a transmission bracket of a powertrain when a transmission of the powertrain is biased to the left in response to a right turn of a vehicle, thereby suppressing movement of the powertrain and further improving steering performance.

Claims

1. A transmission mount installed in a vehicle body in order to support a weight of a transmission, the transmission mount comprising: a housing bracket including a housing, having an opening formed therein, at least two stopper-fixing holes formed therein, and stopper-position-fixing portions formed at an upper portion and a lower portion of the opening; and a stopper configured to be inserted into the stopper-position-fixing portions formed in the housing bracket, and to be fixed to a front surface of the housing in close contact therewith by being inserted into the stopper-fixing holes, wherein the stopper has fixing pieces protrudingly formed at left and right outer sides of upper and lower portions thereof so as to be inserted into the stopper-fixing holes and curled.

2. The transmission mount according to claim 1, wherein the fixing pieces of the stopper are curled in an outward direction of the stopper in order to prevent an insulator, which is inserted into the housing through the opening thereof, from being damaged due to interference between the insulator and the fixing pieces of the stopper.

3. A transmission mount installed in a vehicle body in order to support a weight of a transmission, the transmission mount comprising: a housing bracket including a housing, having an opening formed therein, at least two stopper-fixing holes formed therein, and stopper-position-fixing portions formed at an upper portion and a lower portion of the opening; a stopper having insertion-protruding portions, which are protrudingly formed at inner upper and lower portions thereof so as to be inserted into the stopper-position-fixing portions formed in the housing bracket, fixing pieces, which are formed so as to be inserted into the stopper-fixing holes and curled, and fixing holes, which are formed near the fixing pieces; and an inner steel member having protruding pieces, which are formed at outer sides of upper and lower portions thereof so as to be inserted into the fixing holes formed in the stopper, the inner steel member being fixed to the stopper in close contact therewith by insertion of the protruding pieces into the fixing holes.

4. The transmission mount according to claim 3, wherein the inner steel member has curved protruding portions formed at inner upper and lower portions thereof in order to effectively control vertical movement of an insulator which is inserted into the housing through the opening thereof.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The above and other objects, features and other advantages of the present disclosure will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

(2) FIG. 1 is a view illustrating a stopper of a conventional transmission mount;

(3) FIG. 2 is a view illustrating a stopper of a transmission mount according to the present disclosure;

(4) FIGS. 3A to 3E are views illustrating parts that constitute the stopper of the transmission mount according to the present disclosure. FIG. 3A is a view illustrating a bracket, FIG. 3B is a front view of the stopper, FIG. 3C is a rear view of the stopper, FIG. 3D is a view illustrating the state in which the stopper is mounted to the bracket, and FIG. 3E is a view illustrating an inner steel member, which is formed as a separate part;

(5) FIG. 4 is a view illustrating the state in which the inner steel member is mounted to the stopper according to the present disclosure; and

(6) FIGS. 5A to 5C are views illustrating various embodiments of the inner steel member.

DETAILED DESCRIPTION

(7) Reference will now be made in detail to the embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, to allow those skilled in the art to easily understand and reproduce the embodiments of the present disclosure. However, the present disclosure may be implemented in various different forms, and are not limited to the embodiments described herein.

(8) To clearly explain the present disclosure, illustration of elements having no connection with the description is omitted, and the same or extremely similar elements are designated by the same reference numerals throughout the specification.

(9) In addition, the terms or words used in the specification and claims of the present disclosure are not to be interpreted using typical or dictionary limited meanings, and are constructed as meanings and concepts conforming to the technical spirit of the present disclosure based on the principle that the inventors can appropriately define the concepts of the terms to explain the present disclosure in the best manner.

(10) The present disclosure relates to a stopper, which is mounted to a transmission mount 10 in order to prevent excessive elastic deformation of an insulator 30 coupled to a core 40. Hereinafter, an exemplary embodiment of the present disclosure will be described in more detail with reference to the accompanying drawings.

(11) The transmission mount 10 according to the present disclosure includes a housing bracket 100, a stopper 200, and an inner steel member 300.

(12) The housing bracket 100 according to the present disclosure is configured in a similar manner to the conventional configuration described above, such that an insulator 30, which is formed of an elastic material, and a metal core 40 are coupled to each other and are inserted together into a housing 110, which is formed in the shape of a container having a predetermined size.

(13) However, as shown in FIG. 3A, the housing bracket 100 according to the present disclosure is configured such that the housing 110 has an opening, into which the insulator 30 is inserted and which has stopper-position-fixing portions 112 formed at the inner upper portion and the inner lower portion thereof, and such that the housing 110 has at least two stopper-fixing holes 111 formed in portions thereof that are adjacent to the stopper-position-fixing portions 112.

(14) The stopper-position-fixing portions 112 include arc-shaped curling cut portions, which are formed at four corners of the opening, and sides that connect the curling cut portions.

(15) When the stopper 200 is seated in the stopper-position-fixing portions 112, the stopper 200 is able to be displaced at a desired position while absorbing dimensional tolerance of the stopper-position-fixing portions 112 due to the curling cut portions.

(16) For example, the stopper-position-fixing portions 112 need to be formed to be larger than the insertion-protruding portions 212 of the stopper 200, which will be described later, in the interests of assembly efficiency and ensuring the lifespan of press tools, and thus the curling cut portions are required to enable the stopper 200 to be displaced at a desired position.

(17) Described in detail, the stopper 200 is formed of a hard rubber material, and as shown in FIG. 3B, has a rib 201, which protrudes upwards from the inner lower side thereof in order to prevent the core 40 from moving downwards a predetermined distance or more. Further, as shown in FIG. 3C, the stopper 200 has insertion-protruding portions 212, which are protrudingly formed at the inner upper and lower portions thereof and have shapes corresponding to the curling cut portions so as to be inserted into the stopper-position-fixing portions 112 formed in the bracket 100.

(18) Furthermore, as shown in FIG. 3C, the stopper 200 has fixing pieces 211, which are protrudingly formed at the outer sides of the upper and lower portions thereof. The fixing pieces 211 are inserted into the stopper-fixing holes 111 and are subsequently curled in the outward direction of the stopper 200.

(19) Accordingly, the stopper 200, as shown in FIG. 3D, is coupled to the housing bracket 100.

(20) That is, the insertion-protruding portions 212, which are formed at the inner upper and lower portions of the stopper 200, are inserted into the stopper-position-fixing portions 112 formed at the inner upper and lower portions of the housing 110, and at the same time, the fixing pieces 211, which are protrudingly formed at the outer left and right sides of the upper and lower portions of the stopper 200, are inserted into the stopper-fixing holes 111 formed in the housing 110, and are subsequently curled and fixed to the housing 110, as shown in FIG. 3D.

(21) The stopper 200 further has fixing holes 213 formed near the fixing pieces 211, into which protruding pieces 311 of the inner steel member 300 are inserted.

(22) The inner steel member 300 has curved protruding portions 312, which are formed at the inner upper and lower portions thereof in order to effectively control vertical movement of the insulator 30. The inner vertical sides of the inner steel member 300 are formed so as to provide gaps through which a core bracket is efficiently assembled.

(23) Further, the inner steel member 300 has protruding pieces 311, which are formed at the outer sides of the upper and lower portions thereof so as to be inserted into the fixing holes 213 formed in the stopper 200.

(24) The inner steel member 300 assists in effectively fixing the stopper 200 to the bracket 100 through insertion of the insertion-protruding portions 212 of the stopper 200 into the stopper-position-fixing portions 112 formed in the bracket 100. The entire area of the inner steel member 300 may be covered with rubber in order to prevent the occurrence of corrosion and noise.

(25) Further, the curved protruding portions 312, which are formed at the inner upper and lower portions of the inner steel member 300, are formed so as to extend laterally, whereby the curved protruding portions 312 serve to fix the position of the stopper 200 until the stopper 200 is assembled with the bracket 100 by inserting the fixing pieces 211 into the stopper-fixing holes 111 and curling the same in the outward direction of the stopper 200. Furthermore, the curved protruding portions 312 serve to reinforce the stiffness of the inner steel member 300 in order to prevent the inner steel member 300 from being deformed due to vertical displacement of the core 40.

(26) As described above, as shown in FIGS. 2 to 4, the transmission mount 10 is structured such that the inner steel member 300, which is coupled to the stopper 200 in order to effectively control vertical movement of the insulator 30, has the curved protruding portions 312 formed at the inner upper and lower portions thereof. The inner steel member 300 having these curved protruding portions 312 not only fixes the position of the stopper 200 but also enables the stopper 200 to effectively suppress excessive vertical movement of the insulator 30.

(27) FIGS. 5A to 5C illustrate various embodiments of the inner steel member 300. As shown in FIG. 5A, the inner steel member 300 may have no curved protruding portions. As shown in FIG. 5B, the inner steel member 300 may have curved protruding portions 312, which are formed at four inner corners thereof. As shown in FIG. 5C, the inner steel member 300 may have curved protruding portions 312, which are formed so as to extend along the inner upper side and the inner lower side thereof.

(28) As is apparent from the above description, the structure of a transmission mount according to the present disclosure has the following effects.

(29) First, as a result of coupling an inner steel member to a stopper, it is possible to securely fix the stopper and to effectively prevent the occurrence of noise and separation of the stopper.

(30) Second, the stopper of the transmission mount contacts a transmission bracket of a powertrain when a transmission of the powertrain is biased to the left in response to a right turn of a vehicle, thereby suppressing movement of the powertrain and further improving the steering performance (when the vehicle turns left, a stopper provided at an insulator suppresses movement of the powertrain).

(31) Third, as a result of inserting fixing pieces of the stopper into stopper-fixing holes in a housing bracket and curling the same in the outward direction of the stopper, it is possible to prevent the insulator from being damaged due to interference between the insulator and the fixing pieces of the stopper.

(32) Finally, as a result of forming curved protruding portions at the inner upper and lower portions of the inner steel member, which is coupled to the stopper in order to effectively control vertical movement of the insulator, it is possible not only to fix the position of the stopper but also to enable the stopper to effectively suppress excessive vertical movement of the insulator (control of vertical movement of a powertrain of a vehicle).

(33) Although the preferred embodiments of the present disclosure have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the disclosure as disclosed in the accompanying claims.