Injector fixing structure of fuel rail

Abstract

Disclosed herein is an injector fixing structure of a fuel rail. The injector fixing structure for a fuel rail module is configured such that an injector cup that includes a slot formed at a side thereof and an injector that includes an anti-rotation pin inserted into the slot are coupled to each other by a clip. The injector fixing structure also includes a lock formed integrally with the anti-rotation pin, and a fixing member coupled to the slot and allowing the lock to be secured when the anti-rotation pin is inserted into the slot such that the anti-rotation pin is prevented from being separated from the slot. The present invention may prevent separation of the injector from the fuel rail during transportation of the fuel rail module, thereby improving assemblability of the fuel rail module in engine assembly and increasing process efficiency.

Claims

1. An injector fixing structure of a fuel rail for a fuel rail module wherein an injector cup that includes a slot formed at a side thereof and an injector that includes an anti-rotation pin inserted into the slot are coupled to each other by a clip, the injector fixing structure comprising: a lock formed integrally with the anti-rotation pin; and a fixing member coupled to the slot and allowing the lock to be secured when the anti-rotation pin is inserted into the slot such that the anti-rotation pin is prevented from being separated from the slot, wherein the anti-rotation pin is divided into first to third pin members which are separated from each other such that each pin member is configured to be elastically deformed in forward, rearward, left, and right direction, and wherein the lock is formed on a surface of the second pin member that is a middle pin member of the first to third pin members.

2. The injector fixing structure of claim 1, wherein the fixing member is provided at a lower end portion of the slot of the injector cup such that after the anti-rotation pin is inserted through a space between the slot and the fixing member, the lock is secured to an upper end portion of the fixing member.

3. The injector fixing structure of claim 1, wherein the lock is formed on a front surface of the second pin member.

4. The injector fixing structure of claim 3, wherein the second pin member is elastically deformed in a rearward direction upon insertion into the slot such that the lock is allowed to pass through the fixing member, and is then restored to an original shape thereof after the lock passes through the fixing member, whereby the lock is secured to the fixing member.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

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

(2) FIG. 1 shows an injector fixing structure of a fuel rail of a fuel rail module according to the related art;

(3) FIG. 2 shows an injector fixing structure of a fuel rail of a fuel rail module according to a first exemplary embodiment of the present invention;

(4) FIGS. 3 and 4 show an injector fixing structure of a fuel rail of a fuel rail module according to a second exemplary embodiment of the present invention; and

(5) FIGS. 5 and 6 show an injector fixing structure of a fuel rail of a fuel rail module according to a third exemplary embodiment of the present invention.

DETAILED DESCRIPTION

(6) The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms a, an and the are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms comprises and/or comprising, when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term and/or includes any and all combinations of one or more of the associated listed items.

(7) The present invention will be described in detail below with reference to the accompanying drawings.

(8) Referring to FIG. 2, an injector fixing structure of a fuel rail according to a first exemplary embodiment of the present invention may include a lock 14 and a fixing member 21. The lock 14 may be formed integrally with an anti-rotation pin 10 of an injector 1, and the anti-rotation pin 10 of the injector 1 according to the exemplary embodiment of the present invention may be divided into first to third pin members 11, 12, and 13. The lock 14 may be formed on a front surface of the second pin member 12 that is a middle pin member of the respective pin members.

(9) The fixing member 21 may be coupled to a slot 20 of the injector cup 2 such that a space where the anti-rotation pin 10 of the injector 1 is inserted may be defined between the slot 20 and the fixing member 21. The fixing member 21 may be coupled to a lower end portion of the slot 20 of the injector cup 2 such that the anti-rotation pin 10 may be inserted between the slot 20 and the fixing member 21 and then the lock 14 may be secured to an upper end portion of the fixing member 21. Since the anti-rotation pin 10 may be divided into the first to third pin members 11, 12, and 13, each pin member may be elastically deformed in forward, rearward, left, and right directions. Accordingly, the second pin member 12 that includes the lock 14 formed thereon may be elastically deformed in the rearward direction upon insertion into the slot 20 such that the lock 14 may be allowed to pass through the fixing member 21, and then be restored to an original shape thereof after the lock 14 has passed through the fixing member 21, whereby the lock 14 may be secured to the fixing member 21.

(10) According to the injector fixing structure of the fuel rail according to the first exemplary embodiment of the present invention having the above configuration, when the anti-rotation pin 10 of the injector 1 is inserted into the slot 20 of the injector cup 2, the anti-rotation pin 10 may be supported and retained by the slot 20 and the fixing member 21 to prevent the injector 1 from being separated in the forward and rearward directions, while the first and third pin members 11 and 13 of the anti-rotation pin 10 may be supported and retained on left and right opposed inside surfaces of the slot 20, respectively, to prevent the injector 1 from rotating in the left and right directions. Furthermore, the lock 14 of the second pin member 12 may be secured to the fixing member 21 supportably and retainably to prevent the injector 1 from being separated in upward and downward directions. Consequently, secure and reliable coupling of the injector 1 may be maintained during transportation of a fuel rail module.

(11) FIGS. 3 and 4 are views showing an injector fixing structure of a fuel rail according to a second exemplary embodiment of the present invention. The injector fixing structure of the fuel rail according to the second exemplary embodiment may be configured such that a lock 14 is formed on an outer side surface of each of first and third pin members 11 and 13 of an anti-rotation pin 10, and a stepped portion 22 is formed at a lower end portion of a slot 20 by protruding from each of left and right opposed inside surfaces thereof such that the locks 14 may be secured to the stepped portions 22.

(12) The first and third pin members 11 and 13 that include the locks 14 formed thereon may be elastically deformed in the left and right directions upon insertion into the slot 20 such that the locks 14 may be allowed to pass through the stepped portions 22 of the slot 20, and then be restored to original shapes thereof after the locks 14 have passed through the stepped portions 22, whereby the locks 14 may be secured to the stepped portions 22 of the slot 20.

(13) According to the injector fixing structure of the fuel rail according to the second exemplary embodiment of the present invention having the above configuration, when the anti-rotation pin 10 of the injector 1 is inserted into the slot 20 of the injector cup 2, the anti-rotation pin 10 may be supported and retained by the slots 20 and the fixing member 21 to prevent the injector 1 from being separated in the forward and rearward directions, while the first and third pin members 11 and 13 of the anti-rotation pin 10 may be supported and retained on the left and right opposed inside surfaces of the slot 20, respectively, to prevent the injector 1 from rotating in the left and right directions. Furthermore, the locks 14 of the first and third pin members 11 and 13 may be respectively secured to the stepped portions 22 of the slot 20 supportably and retainably to prevent the injector 1 from being separated in the upward and downward directions. Consequently, secure and reliable coupling of the injector 1 may be maintained during transportation of a fuel rail module.

(14) FIGS. 5 and 6 are views showing an injector fixing structure of a fuel rail according to a third exemplary embodiment of the present invention. The injector fixing structure of the fuel rail according to the third exemplary embodiment of the present invention may be configured such that a lock 14 is formed on a rear surface of a second pin member 12 of an anti-rotation pin 10, and a stepped portion 22 is formed at a lower end portion of a slot 20 by protruding in the forward direction such that the lock 14 may be secured to the stepped portion 22.

(15) The second pin member 12 having the lock 14 formed thereon may be elastically deformed in the forward direction upon insertion into the slot 20 such that the lock 14 may be allowed to pass through the stepped portion 22 of the slot 20, and then be restored to an original shape thereof after the lock 14 has passed through the stepped portion 22, whereby the lock 14 may be secured to the stepped portion 22 of the slot 20.

(16) According to the injector fixing structure of the fuel rail according to the third exemplary embodiment of the present invention having the above configuration, when the anti-rotation pin 10 of the injector 1 is inserted into the slot 20 of the injector cup 2, the anti-rotation pin 10 may be supported and retained by the slot 20 and the fixing member 21 to prevent the injector 1 from being separated in the forward and rearward directions, while the first and third pin members 11 and 13 of the anti-rotation pin 10 may be supported and retained on the left and right opposed inside surfaces of the slot 20, respectively, to prevent the injector 1 from rotating in the left and right directions. Furthermore, the lock 14 of the second pin member 12 may be secured to the stepped portion 22 of the slot 20 supportably and retainably to prevent the injector 1 from being separated in the upward and downward directions. Consequently, secure and reliable coupling of the injector 1 may be maintained during transportation of a fuel rail module.

(17) Although the preferred embodiments of the present invention 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 invention as disclosed in the accompanying claims.

(18) The present invention is intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments that may be included within the spirit and scope of the present invention as defined by the appended claims. In addition, the scope of the present invention is defined by the accompanying claims rather than the description which is presented above.