Lamp device shell cracking tool set and lamp device shell cracking method

Abstract

To provide a shell crushing device for a lamp device that is used in work for crushing a shell of a lamp device such as a head lamp, which can be prevented from sliding between a housing main body and a cutting edge of a plier, so as to surely perform work for separating the housing main body from a lens (a work for crushing a shell of the lamp device).SOLUTION: The shell crusher for a lamp device comprises a plier member T1 that is configured to insert a pair of claw members 14 and 24 into a mating surface Y between a housing main body W1 and a lens W2 to spread a space s between the housing main body W1 and the lens W2. The pair of claw members 14 and 24 is constituted of the first claw member 14 comprising a contacting / spreading part whose one side is formed in a nearly I-shape and the second claw member 24 comprising a contacting / spreading part whose other side is formed in a nearly Y-shape. At tip parts of the first claw member 14 and the second claw member 24 are provided burr parts that engage with the housing main body W1 and the lens W2.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a lamp device shell cracking tool used when performing a so-called shell cracking operation on a lamp device such as a head lamp device or a tail lamp device of an automobile or the like. Set and lamp device shell cracking method Regarding. [Background technology]

[0002] In recent years, the cost of headlamp units themselves has risen in automobile and taillamp units due to the widespread use of specially shaped units to meet design requirements, as well as the incorporation of LED lamps and sensors for preventive safety systems within the headlamp unit. On the other hand, LED lamps can be used semi-permanently and do not require replacement in principle, and in order to prevent damage to the reflector within the headlamp unit from changing the light distribution characteristics and affecting sensor operation, an increasing number of headlamp units are being integrated with adhesives or other means to prevent the light-emitting part (main housing part) and the transparent resin part (lens part) from being separated.

[0003] However, when part of a headlamp device is damaged in an accident or when the transparent color of the lens changes over time, it may be necessary to replace only the lens. However, as mentioned above, because the headlamp device is held together with adhesive, it is necessary to replace the entire lamp device.

[0004] Therefore, as described in the following Non-Patent Document 1, it is known that the lamp device is first heated with a hair dryer or the like, and then the housing body and lens are separated using "clip pliers," a special tool for removing plastic clips that secure interior trim, etc. This type of separation work is known among workers as "cracking open the shell of a headlamp device," and several videos of the work have also been uploaded to the Internet.

[0005] In this way, it is known that by using "clip pliers," which are originally a special tool for removing plastic clips, to crack open the shell of this headlamp device, the work of cracking open the shell of this headlamp device can be carried out relatively easily. [Prior art documents] [Non-patent literature]

[0006] [Non-Patent Document 1] 1. Author: "Metaba" 2. Title: "Metabanium" 3. Related section: "Try cracking open the headlight shell (RAV4 50 series)" 4. Media type: "online" 5. Publication date: "September 1, 2020" 6. Retrieved date: "August 26, 2021" 7. URL: "https: / / www.metabanium.com / car / headlight-karawari / " Summary of the Invention [Problem to be solved by the invention]

[0007] However, in order to improve the sealing performance of lamp devices, the housing body and lens are bonded with a strong adhesive, which can be achieved by ultrasonic welding or by using a sealant, such as butyl rubber or other viscous material.

[0008] Therefore, when opening the lamp device, it is necessary to resist this strong adhesive force to separate the housing body and the lens. However, because this adhesive force is so strong, even if you use clip pliers to separate a part between the housing body and the lens, the adhesive state will immediately return to normal. There is a problem that it reverts to

[0009] In particular, the cutting edge of the clip pliers is originally formed thin and wedge-shaped so that it can be inserted between the resin clip and the interior material, so the clip pliers are easily ejected from between the housing body and the lens, making it difficult to separate the housing body and the lens.

[0010] Furthermore, one of the cutting edges of the clip pliers has a U-shaped notch for inserting the shaft of the resin clip, which means that the contact area of ​​the cutting edge cannot be secured sufficiently, resulting in no sliding resistance and causing the clip pliers to slip, making it difficult to crack open the lamp device.

[0011] The present invention has been made in view of the above points, and its object is to provide a lamp device shell cracking tool used when cracking the shell of a lamp device such as a headlamp. Set and lamp device shell cracking method A lamp device shell cracking tool that can reliably perform the work of separating the housing body and the lens (shell cracking of the lamp device) by preventing slippage between the housing body and the cutting edge of the pliers. Set and lamp device shell cracking method The purpose is to provide [Means for solving the problem]

[0012] In order to achieve this object, the present invention provides a lamp device shell cracking tool for cracking a lamp device by separating a housing body and a lens of the lamp device. Set and lamp device shell cracking method The cutting edge of the tool tip is formed as a flat sliding part, and a burr is provided at the tip of the sliding part. etc. It is characterized by the following.

[0013] Specifically, in the first invention, a lamp device shell cracking tool is provided for cracking a lamp device configured by bonding a housing body and a lens. set And, The lamp device shell cracking tool set includes at least a pliers member and a wedge member, and the pliers member has a pair of abutment expansion portions that are inserted between the mating surfaces of the housing main body and the lens so as to expand the gap between the mating surfaces in the early stage of the shell cracking operation, the wedge member has a horizontally long, generally rectangular cross section, and is provided with a horizontally oriented insertion engaging portion that is inserted horizontally into the gap between the mating surfaces expanded by the pliers member in the middle stage of the shell cracking operation and is configured to maintain the gap on its short side, and in the later stage of the shell cracking operation, is provided with a vertically oriented insertion engaging portion that is inserted vertically into the gap between the mating surfaces further expanded by the pliers member and is configured to maintain the gap on its long side. A lamp device shell cracking tool characterized by the above features. It is a set.

[0014] In the second invention, The pair of contact extension parts of the pliers member are configured such that one is formed in a substantially Y-shape and the other is formed in a substantially I-shape, and when the two are overlapped, they are aligned in a substantially straight line, and a spring member is provided to bias the contact extension parts so that they are aligned in a substantially straight line. A lamp device shell cracking tool characterized by the above features. It is a set .

[0015] In the third invention, The wedge member is formed in a wedge shape whose thickness gradually increases from the tip side to the base side, and a plurality of burrs are provided from the tip side to the base side on the contact surface of the wedge member between the housing body and the lens to prevent the wedge member from coming off. A lamp device shell cracking tool characterized by the above features. It is a set .

[0016] In the fourth invention, This is a method for cracking a lamp device shell that is constructed by bonding a housing body and a lens, and is characterized in that, in the early stage of the shell-cracking operation, a step is set up in which a pair of abutment expansion portions of a pliers member are inserted into the mating surfaces of the housing body and the lens to expand the gap between the mating surfaces; in the middle stage of the shell-cracking operation, a step is set up in which a horizontally oriented insertion engagement portion of a wedge member having a horizontally elongated, approximately rectangular cross section is inserted horizontally to maintain the gap between the mating surfaces expanded by the pliers members, thereby maintaining the gap on the short side; and in the later stage of the shell-cracking operation, a step is set up in which a vertically oriented insertion engagement portion of the wedge member is inserted vertically to maintain the gap between the mating surfaces that has been further expanded by the pliers members, thereby maintaining the gap on the long side. [Effects of the Invention]

[0017] As described above, according to the present invention, it is possible to reliably obtain sliding resistance between the pair of tip ends of the pliers members and prevent the pliers members from falling off, thereby reliably preventing slippage between the housing body of the lamp device and the pliers members. etc. can be done.

[0018] Therefore, a lamp device shell cracking tool used when performing shell cracking work on a lamp device such as a headlamp Set and lamp device shell cracking method To prevent slippage between the housing body and the cutting edge of the pliers and ensure separation of the housing body and lens. etc. can be done. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is an overall perspective view of a lamp device shell cracking tool according to a first embodiment of the present invention, showing, from above, a pliers member, a wedge member, and a spatula member. [Figure 2] 1A is a plan view of a pliers member of a lamp device shell cracking tool, and FIG. 1B is a side view of the pliers member. [Figure 3] 3A and 3B are a plan view and a side view, respectively, of a first claw member of the pliers member of FIG. 2. [Figure 4] 3A and 3B are a plan view and a side view, respectively, of the second claw member of the pliers member of FIG. 2. [Figure 5] 2A is a plan view of a wedge member of a lamp device shell cracking tool, and FIG. 2B is a vertical cross-sectional view taken along line XX. [Figure 6] FIG. 2 is an exploded perspective view of the headlamp device. [Figure 7] FIG. 10 is a diagram showing the first step of the shell cracking operation of the headlamp device. [Figure 8] FIG. 10 is a diagram showing the second step of the shell cracking operation of the headlamp device. [Figure 9]FIG. 10 is a diagram showing the third step of the shell cracking operation of the headlamp device. [Figure 10] FIG. 10 is a diagram showing the fourth step of the shell-opening work of the headlamp device. [Figure 11] FIG. 10 is a diagram showing the fifth step of the headlamp device shell cracking operation. [Figure 12] FIG. 10 is a diagram showing the sixth step of the shell cracking work of the headlamp device. [Figure 13] FIG. 10 is a diagram showing the seventh step of the headlamp device shell cracking operation. DETAILED DESCRIPTION OF THE INVENTION

[0020] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following description of the preferred embodiments is merely exemplary in nature and is not intended to limit the present invention, its applications, or its uses.

[0021] (Embodiment 1) First, the lamp device shell cracking tool T will be described using Figure 1. This lamp device shell cracking tool T is composed of three members. From the top, they are a pliers member T1, a wedge member T2, and a spatula member T3. Of these, the pliers member T1 and the wedge member T2 are used to crack the headlamp device W (see Figure 6), and the spatula member T3 is used to attach a new adhesive, i.e., a sealing material W3, to the housing main body W1 (see Figure 6) after the shell cracking operation.

[0022] First, the above-mentioned pliers member T1 will be described with reference to FIG. 2 and other figures.

[0023] This pliers member T1 is constructed by connecting two parts, a first main body part 1 and a second main body part 2, so that they can rotate freely via a central rotation shaft 3. Specifically, handle portions 11, 21 are provided on the base end sides of the first main body part 1 and the second main body part 2, and tip portions 12, 22 are provided on the tip end sides of the first main body part 1 and the second main body part 2, with the rotation shaft 3 provided in the middle between them.

[0024] By configuring the pliers member T1 in this way, when an operator grips and clamps the handle portions 11, 21 of the first main body part 1 and the second main body part 2, the interval between the tip portions 12, 22 of the first main body part 1 and the second main body part 2 is widened outward by the reversing action of the rotation shaft 3. It is composed of:

[0025] The handle portions 11, 21 are covered with rubber cover members 13, 23, respectively, to prevent slipping when the operator grips the handle portions 11, 21. A coil spring 4 (see Figure 2) is interposed between the two handle portions 11, 21 near the rotation axis 3, and this coil spring 4 biases the two handle portions 11, 21 to move in the expanding direction and the tip portions 12, 22 to move in the closing direction.

[0026] Separate claw members 14, 24 are provided on the two tip portions 12, 22 via mounting screws 5, 5. These claw members 14, 24 may be formed integrally with the first main body part 1 and the second main body part 2.

[0027] The claw members 14, 24 are composed of a first claw member 14 shown in FIG. 3 and a second claw member 24 shown in FIG.

[0028] The first claw member 14 shown in Fig. 3 has a contact extension 14a that is generally Y-shaped in side view at its tip end and a rod-shaped insertion fixing pin 14b at its base end. The contact extension 14a has two flat receiving surfaces 14c, 14c and a bifurcated base 14d, with steps 14e, 14e formed between the receiving surfaces 14c, 14c and the base 14d. Furthermore, the tip ends of the receiving surfaces 14c, 14c are provided with burrs 14g that protrude outward.

[0029] Furthermore, a notched surface 14f is formed on the side surface of the insertion fixing pin portion 14b, and this notched surface 14f is used to fix the insertion fixing pin portion 14b to the tip portion 12 of the first main body part 1 with a mounting screw 5 (see FIG. 1).

[0030] The second claw member 24 in Fig. 4 has a contact extension 24a at its tip end that is generally I-shaped in side view and a rod-shaped insertion fixing pin 24b at its base end. The contact extension 24a of the second claw member 24 has a flat receiving surface 24c and a thick base 24d, with a step 24e formed between the receiving surface 24c and the base 24d. The tip of the receiving surface 24c also has a burr 24g that protrudes outward.

[0031] In addition, a notched surface 24f is formed on the side of the insertion fixing pin portion 24b of this second claw member 24, and this notched surface 24f is used to fix it to the tip portion 22 of the second main body part 2 with an attachment screw 5 (see Figure 1).

[0032] In this way, by making the abutment extension portion 14a of the first claw member 14 approximately Y-shaped and the abutment extension portion 24a of the second claw member 24 approximately I-shaped, when these two claw members 14, 24 are overlapped, the approximately I-shaped abutment extension portion 24a is positioned between the approximately Y-shaped abutment extension portions 14a, and the tips of the two abutment extension portions 14a, 24a are aligned in a substantially straight line. Therefore, as will be described later, these two abutment extension portions 14a, 24a can be easily inserted into the mating surface Y (see FIG. 7) of the housing main body W1 and the lens W2 of the headlamp device W.

[0033] Furthermore, because the tips of the contact extensions 14a, 24a are formed with thin, flat receiving surface portions 14c, 24c, they can be easily inserted all the way to the back (inside) of the gap s between the mating surfaces Y (see FIG. 7) of the housing main body W1 and the lens W2. Furthermore, of these flat receiving surface portions 14c, 24c, the receiving surface portion 24c of the second claw member 24 in particular is approximately I-shaped, which ensures a larger contact area compared to the cutting edge portion of a typical clip pliers that has a U-shaped notch, thereby increasing the sliding resistance against the housing main body W1 or the lens W2.

[0034] Furthermore, because the contact extensions 14a, 24a are provided with burrs 14g, 24g at their respective tips, once inserted into the gap s between the mating surfaces Y of the housing main body W1 and the lens W2, these burrs 14g, 24g prevent the contact extensions 14a, 24a from falling out, and the contact extensions 14a, 24a will not be ejected from the gap s between the mating surfaces Y of the housing main body W1 and the lens W2. This makes it easy to separate the housing main body W1 and the lens W2 using the pliers member T1 (opening the shell of the headlamp device W).

[0035] The contact extension portions 14a, 24a are provided with step portions 14e, 24e and the tip end portions are formed flat so that the operator can visually check the insertion state when inserting the flat receiving surface portions 14c, 24c into the gap s between the mating surfaces Y of the housing main body W1 and the lens W2.

[0036] Next, the above-mentioned wedge member T2 will be described with reference to FIGS.

[0037] The wedge member T2 is a roughly shaped member molded from a hard resin, such as PP (polypropylene). This wedge member T2 is composed of an insertion engaging portion 6 provided at the tip end, a gripping portion 7 provided at the base end, and a neck portion 8 provided between the insertion engaging portion 6 and the gripping portion 7.

[0038] The aforementioned insertion engagement portion 6 has a horizontally elongated, generally rectangular cross section that gradually becomes thicker from the tip end toward the base end. A plurality of nodular ridges 61, 62, and 63 are formed along the way. These ridges 61, 62, and 63 are formed in this order, with a first ridge 61 and a second ridge 62 extending from the tip end around the entire circumference of the insertion engagement portion 6, and a third ridge 63 formed only on the side surface of the insertion engagement portion 6. Washboard-shaped irregularities 64 are provided on the top and bottom surfaces of the insertion engagement portion 6 to prevent slippage.

[0039] The grip portion 7 has a horizontally long, approximately rectangular shape with a through-hole 70 in the center. This horizontally long shape makes it easier for an operator to push the insertion engagement portion 6 into the gap s between the mating surfaces Y of the housing main body W1 and the lens W2.

[0040] The neck portion 8 is formed to be thinner than the insertion engaging portion 6 and the grip portion 7, and has a recess 81 in the center.

[0041] The spatula member T3 described above is configured to have a roughly dust-like shape and is molded from a hard resin, for example, PP (polypropylene), as shown in Figure 1. This spatula member T3 is also configured with a cutting edge shaped portion 9A, a grip portion 9B, and a neck portion 9C, similar to the wedge member T2 described above.

[0042] However, as described above, the spatula member T3 is used to fill new sealant W3 into the housing main body W1 after the shell-cracking operation, and therefore does not have a burr or the like. On the other hand, the tip of the cutting edge shaped portion 9A is provided with a tip portion 10 made of a silicone material. By providing the tip portion 10 at the tip of the spatula member T3 in this manner, the sealant W3, such as butyl rubber, is less likely to stick to the tip portion 10, making it easier to fill the housing main body W1 with the sealant W3 using the spatula member T3. While the tip portion 10 is made of a silicone material in this embodiment, other materials with a release effect may also be used.

[0043] Next, the operation of separating the housing main body W1 and the lens W2 of the headlamp device W (the operation of opening the shell of the headlamp device W) will be described.

[0044] FIG. 6 is a diagram showing the state in which the housing body W1 and the lens W2 of the headlamp device W are separated.

[0045] The headlamp device W is composed of a resin housing body W1 with a light-emitting portion inside, a cover-like lens W2 molded from transparent resin, and a sealing material W3 made of butyl rubber or the like interposed between the housing body W1 and the lens W2.

[0046] In the headlamp device W, under normal conditions, the lens W2 is adhesively fixed in a fitted state at the front position of the housing main body W1, as shown by the dashed-dotted imaginary line, and the housing main body W1, lens W2, and sealant W3 are integrated into a single unit. For this reason, if, for example, part of the lens W2 is damaged, it has conventionally been necessary to replace the entire headlamp device W. Therefore, it is necessary to separate the housing main body W1 and the lens W2 (open the shell of the headlamp device W) so that only the lens W2 can be replaced.

[0047] The shell cracking operation of the headlamp device W is carried out gradually from the corner Z indicated by the circle on the mating surface Y between the housing body W1 and the lens W2, and then spreads to the entire circumference of the mating surface Y.

[0048] The specific steps of the shell-opening work for the headlamp device W will be described below with reference to FIGS.

[0049] First, as shown in Figure 7, the pliers T1 are used to approach the mating surface Y between the housing main body W1 and the lens W2. With the first claw member 14 and the second claw member 24 at the tip of the pliers T1 closed, the pliers are inserted into the mating surface Y between the housing main body W1 and the lens W2 (see Figure 7, etc.). Although not shown, it is desirable to apply heat to the mating surface Y beforehand to soften the sealing material W3.

[0050] Specifically, a recessed receiving portion W11 is formed at the end of the housing body W1, and butyl rubber, which is a sealing material W3, is embedded inside the recessed receiving portion W11. An insertion piece W21 at the end of the lens W2 is inserted into this sealing material W3, thereby adhesively fixing the lens W2 to the housing body W1. An abutment piece W22 is provided at the end of the lens W2, and this abutment piece W22 abuts against the outer wall W12 of the receiving portion W11 of the housing body W1, thereby forming a mating surface Y between the housing body W1 and the lens W2.

[0051] By inserting the tips of the first claw member 14 and the second claw member 24 into this mating surface Y, a small gap s is formed between the housing body W1 and the lens W2, and the pliers member T1 is pushed inward until the tips of the first claw member 14 and the second claw member 24 abut against the insertion piece W21 of the lens W2.

[0052] Next, as shown in FIG. 8, an operator grips the handle portions 11, 12 of the pliers member T, widening the gap between the tips of the second claw member 24 of the first claw member 14. This widens the gap s between the mating surfaces Y of the housing main body W1 and the lens W2. As the gap s between the mating surfaces Y widens in this manner, the sealing material W3 is pulled up by the insertion piece W21 at the end of the lens W2 and stretches. Then, although not shown, the adhesion between the insertion piece W21 of the lens W2 and the sealing material W3 eventually comes apart, and the lens W2 and the housing main body W1 separate at this portion.

[0053] However, since the adhesive strength of this sealing material W3 is strong, when the grip of the handle portions 11, 12 of the pliers member T1 is loosened, the adhesive state of this portion between the lens W2 and the housing member W1 is restored.

[0054] Therefore, in this embodiment, as shown in the following FIGS. 9 to 13, a wedge member T2 is used to maintain the separated state of the lens W2 and the housing main body W1.

[0055] First, as shown in Fig. 9, the wedge member T2 is inserted sideways (so that the short side of the approximately rectangular shape is sandwiched in the gap and the long side is in contact) into the gap s between the mating surfaces Y of the housing main body W1 and the lens W2. The insertion position of this wedge member T2 is adjacent to the position where the pliers member T1 is inserted. This makes it easier to insert the wedge member T2.

[0056] The first ridge portion 61 of the wedge member T2 is hooked onto the inside of the outer wall W12 of the receiving portion W11 of the housing main body W, so that the wedge member T2 maintains the gap s of the mating surfaces Y widened by the pliers member T1.

[0057] In this way, by using the wedge member T2 to maintain the gap s of the mating surfaces Y widened by the pliers member T1, the pliers member T1 can be temporarily removed from the mating surface Y between the lens W2 and the housing main body W1 and moved to another mating surface (not shown).

[0058] The pliers member T1 that has been moved to another mating surface also undergoes the steps shown in FIGS. 7 and 8 at the location of that mating surface to widen the gap between the mating surfaces.

[0059] In this way, when the gap at another mating surface is widened by the pliers member T1, the gap s can be further widened at the mating surface Y where the wedge member T2 is inserted. Therefore, as shown in Figure 10, the wedge member T2 is inserted inward to maintain the widened gap s.

[0060] That is, by inserting the wedge member T2 inward and hooking the second ridge portion 62 onto the inside of the outer wall W12 of the receiving portion W11 of the housing main body W1, the gap s of the mating surface Y, which has been further widened by the wedge member T2, is maintained.

[0061] The reason why the spacing s of the gap Y is gradually widened using the wedge member T2 in this manner is that the lens W2 and the housing main body W1 are firmly bonded together by the strong adhesive force of the sealing material W3, and if the spacing of the gap s is widened all at once, there is a possibility that the lens W2 or the housing main body W1 may be damaged.

[0062] Thereafter, the pliers member T1 is removed from the other mating surface and moved to yet another mating surface (not shown). Then, at the other mating surface, the pliers member T1 is used to widen the gap between the other mating surfaces through the steps shown in FIGS. 7 and 8.

[0063] If the gap widens at this other mating surface, the gap s at mating surface Y where wedge member T2 is inserted will also widen further, so as shown in Figure 11, the gap s is further widened by using wedge member T2.

[0064] 11, the wedge member T2 is oriented vertically (so that the long sides of the substantially rectangular shape are sandwiched in the gap and the short sides abut) and inserted into the gap s between the mating surfaces Y of the housing main body W1 and the lens W2. By oriented vertically in this way, even if the gap s between the housing main body W1 and the lens W2 widens further, the wedge member T1 can be used to maintain the gap s between the housing main body W1 and the lens W2.

[0065] In this state, the first burr portion 61 (61b) on the side surface of the wedge member T2 is also By hooking the wedge member T2 onto the inside of the outer wall W12 of the receiving portion W11 of the housing body W1, the gap s of the mating surfaces Y, which has been further expanded by the wedge member T2, can be maintained.

[0066] If the gap s between the mating surfaces Y of the housing main body W1 and the lens W2 then widens further, the wedge member T2 is oriented vertically as shown in Figures 12 and 13 and inserted into the gap s between the mating surfaces Y of the housing main body W1 and the lens W2.

[0067] Specifically, as shown in Figure 12, the wedge member T2 is inserted further inward than in Figure 11, and the second ridge portion 62 (62b) on the side of the wedge member T2 is hooked onto the inside of the outer wall W12 of the receiving portion W11 of the housing main body W1, thereby maintaining the gap s between the mating surfaces Y of the housing main body W1 and the lens W2.

[0068] Furthermore, as shown in Figure 13, the wedge member T2 is inserted further inward than in Figure 12, and the third ridge portion 63 of the wedge member T2 is hooked onto the inside of the outer wall W12 of the receiving portion W11 of the housing main body W1, thereby maintaining the gap s between the mating surfaces Y of the housing main body W1 and the lens W2.

[0069] In this way, by switching the insertion position of the wedge member T2, the wedge member T2 can be adapted to the gap s between the housing main body W1 and the lens W2, which gradually changes during the shell-opening process of the headlamp device W.

[0070] In this way, the shell of the headlamp device W can be opened by gradually widening the gap around the entire circumference of the mating surface Y of the headlamp device W using the pliers member T1 and the wedge member T2, thereby allowing the housing body W1 and the lens W2 to be separated cleanly. Once the housing body W1 and the lens W2 are separated in this way, only the damaged lens W2 can be replaced with a new one.

[0071] After replacing the lens W2 with a new one, the spatula member T3 is used to fill the inside of the receiving portion W11 of the housing main body W1 with new sealing material W3 (butyl rubber), and then the housing main body W1 and the lens W2 are joined together. In this way, the work of opening the shell of the headlamp device W is completed.

[0072] As described above, in this embodiment, the lamp device shell cracking tool T is used to crack open a headlamp device W constructed by bonding a housing body W1 and a lens W2, and includes a pliers member T1 that inserts a pair of claw members 14, 24 between the mating surfaces Y of the housing body W1 and the lens W2 to expand the gap s between the housing body W1 and the lens W2, and the pair of claw members 14, 24 is composed of a first claw member 14 on one side having an approximately I-shaped abutment extension portion 14a, and a second claw member 24 on the other side having an approximately Y-shaped abutment extension portion 24a, and the forefronts of the first claw member 14 and the second claw member 24 are provided with burrs 14g, 24g that engage with the housing body W1 and the lens W2.

[0073] This ensures a sufficient contact area between the pair of abutment extension portions 14a, 24a of the pliers member T1. Furthermore, by providing the burrs 14g, 24g at the leading ends of the first claw member 14 and the second claw member 24, once the pair of abutment extension portions 14a, 24a of the pliers member T1 are inserted between the housing main body W1 and the lens W2 of the headlamp device W, it is possible to prevent the pliers member T2 from falling out.

[0074] This ensures that the sliding resistance of the pair of tip ends of the pliers member T2 is obtained, and prevents the pliers member T2 from falling off, thereby reliably preventing slippage between the housing main body W1 of the headlamp device W and the pliers member T1.

[0075] Therefore, in the lamp device shell cracking tool T used when cracking the shell of a lamp device such as a headlamp, slippage between the housing body W1 etc. and the cutting edge of the pliers member T1 can be prevented, and the housing body W1 and the lens W2 can be separated reliably.

[0076] In addition, in this embodiment, a wedge member T2 is provided that maintains the expanded gap s by inserting the insertion engagement portion 6 into the gap s expanded between the housing main body W1 and the lens W2 using the pliers member T1, and burrs 61, 62, and 63 are provided on the surface of the wedge member T2 that abuts against the housing main body W1 and the lens W2 to prevent the wedge member T from slipping out.

[0077] As a result, by inserting the insert engagement portion 6 of the wedge member T2 into the gap s between the expanded housing main body W1 and the lens W2 with the pliers member T1, the spacing of the gap s can be maintained, and by providing the wedge member T2 with burrs 61, 62, 63, it is possible to prevent the wedge member T2 from falling out from between the housing main body W1 and the lens W2.

[0078] Therefore, the gap s between the housing main body W1 and the lens W2 expanded by the pliers member T1 does not narrow even when the pliers member T1 is removed, and the gap s can be maintained even if the housing main body W1 and the lens W2 try to return to their bonded state due to their strong adhesive force. This makes it possible to insert the pliers member T1 into the mating surface Y of the next housing main body W1 and lens W2, and use that pliers member T1 to expand the gap s between that housing main body W1 and lens W2.

[0079] Therefore, the pliers member T1 and the wedge member T2 can be used to gradually widen the gap s between the housing body W1 and the lens W2 over the entire circumference of the headlamp device W, thereby ensuring reliable work in cracking the shell of the headlamp device W.

[0080] In this embodiment, the wedge member T2 is formed in a wedge shape whose thickness gradually increases from the tip side to the base side, and has multiple burrs (61, 62, 63) provided from the tip side to the base side.

[0081] According to this configuration, the burrs 61, 62, 63 of the wedge member T2 are provided at multiple locations where the thickness gradually increases, so that by inserting the wedge member inward (toward the back), the spacing of the expanded gap s can be made wider.

[0082] Therefore, the wedge member T2 not only maintains the expanded gap s, but also has the function of widening the gap s.

[0083] Therefore, the gap s between the housing body W1 and the lens W2 of the headlamp device W can be expanded not only by the pliers member T1 but also by the wedge member T2, and the shell of the headlamp device W can be opened more quickly.

[0084] In addition, in this embodiment, the wedge member T2 has a rectangular cross-sectional shape, and the ridge portions 61, 62 are formed on the long side surfaces (61a, 62a) and short side surfaces (61b, 62b) of the rectangular shape, respectively. In the early stages of the headlamp device W shell-cracking work, the ridge portions 61a, 62a on the long side surfaces prevent the wedge member T2 from coming off, and in the later stages of the headlamp device W shell-cracking work, the ridge portions 61b, 62b on the short side surfaces prevent the wedge member T2 from coming off.

[0085] As a result, the headlamp device W can be opened with one wedge member T2 throughout the entire operation. A gap s is maintained between the housing body W1 and the lens W2.

[0086] Therefore, the gap s between the housing body W1 and the lens W2 of the headlamp device W can be maintained over a wide range using only one wedge member T2.

[0087] Therefore, even if a strong adhesive force acts for a long period of time during the shell-opening operation of the headlamp device W, the wedge member T2 can reliably maintain the gap s between the housing body W1 and the lens W2 of the headlamp device W, so that the shell-opening operation of the headlamp device W can be carried out more reliably.

[0088] (Other embodiments) Next, other embodiments will be described.

[0089] In the first embodiment, the work of cracking open a headlamp device has been described, but the present invention is not limited to this, and may be used for cracking open a lamp device such as a tail lamp device or a winker device, for example.

[0090] Regarding the structure of the pliers, for example, the first claw member and the second claw member may be configured to be fixed by press fitting. Also, the contact surfaces of the contact expansion parts of the first claw member and the second claw member may be subjected to an anti-slip treatment to increase sliding resistance.

[0091] Furthermore, the wedge member may also be configured with a shape and material that suppresses slippage of the contact surfaces, as long as the shape allows the gap s of the mating surfaces Y to be positioned. [Industrial Applicability]

[0092] INDUSTRIAL APPLICABILITY As described above, the present invention is useful for a lamp device shell cracking tool used when performing shell cracking work on a lamp device such as a headlamp. [Explanation of symbols]

[0093] T... Lamp device shell cracking tool T1...Pliers part T2...Wedge member W...Headlamp device W1...Housing body W2…Lamp 14...First claw member 14a...Abutment extension 14c...Receiving surface part 14g...burrs 24...Second claw member 24a...Abutment extension 24c...Receiving surface part 24g...burrs

Claims

1. A lamp device shell cracking tool set for cracking a lamp device configured by bonding a housing body and a lens, The lamp device shell cracking tool set includes at least a pliers member and a wedge member, the pliers member has a pair of abutment expansion portions that are inserted between the mating surfaces of the housing body and the lens so as to expand a gap between the mating surfaces at an initial stage of the shell cracking operation, The wedge member has a cross section formed in a horizontally elongated, substantially rectangular shape, and is provided with a horizontal insertion engaging portion configured to be inserted horizontally into the gap between the mating surfaces expanded by the pliers member during the middle stage of the shell cracking operation and to maintain the gap on the short side; In the later stage of the shell cracking operation, a vertical insertion engaging portion is provided which is inserted vertically into the gap between the mating surfaces further expanded by the pliers member and is configured to maintain the gap on the long side. A lamp device shell cracking tool set.

2. The pair of abutment extension portions of the pliers member are configured so that one is formed in an approximately Y-shape and the other is formed in an approximately I-shape, and when the two are overlapped, they are aligned in an approximately straight line, A spring member is provided to bias the contact expansion parts so that the contact expansion parts are aligned in a substantially straight line.

2. The lamp device shell cracking tool set according to claim 1.

3. The wedge member is formed in a wedge shape whose thickness gradually increases from the tip end side to the base end side, A plurality of burrs are provided on the contact surface of the wedge member between the housing body and the lens from the tip side toward the base side to prevent the wedge member from coming off.

3. The lamp device shell cracking tool set according to claim 1 or 2.

4. A method for cracking a lamp device shell, the method comprising: At the beginning of the shell cracking operation, a step is set in which a pair of contact expansion portions of a pliers member is inserted into the mating surfaces of the housing body and the lens to expand the gap between the mating surfaces, In the middle of the shell cracking operation, a process is set up in which the horizontal insertion engagement portion of the wedge member having a horizontally elongated, substantially rectangular cross section is inserted horizontally to maintain the gap between the mating surfaces expanded by the pliers member, and the gap is maintained on the short side, In the later stage of the shell cracking operation, a step is set up in which the vertically oriented insertion engaging portion of the wedge member is inserted vertically to maintain the gap between the mating surfaces further expanded by the pliers member, and the gap is maintained on the long side. A method for cracking a lamp device shell.

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