TWI448674B - Backlight module fixing tool - Google Patents

Description

Backlight module fixing fixture

The invention relates to an optical component fixing jig, in particular to a backlight module fixing jig.

The liquid crystal display has the advantages of light weight and small volume compared with the conventional cathode ray tube display, and becomes one of the displays replacing the cathode ray tube display. In a liquid crystal display, since liquid crystal molecules are not self-luminous, a liquid crystal display generally includes a backlight module that supplies a light source for liquid crystal molecules. The backlight module generally includes a circuit board, a light source (such as a light-emitting diode), a reflective plate and a light guide plate on the circuit board and driven by the circuit board. Before the factory, the brightness and uniformity of the backlight module illumination should be tested. During the test, the backlight module needs to be fixed to ensure the accuracy of the test results. Therefore, how to develop a fixed fixture for fixing the backlight module during the test process has become an urgent problem to be solved.

In view of this, it is necessary to provide a backlight module fixing jig capable of fixing the backlight module.

A backlight module fixing jig includes a base, a first clamping arm and a second clamping arm. The base is provided with a first guiding slot extending in the first direction and a second guiding slot extending in the second direction, the first direction being perpendicular to the second direction. The first clamping arm includes a first guiding rod and a first clamping portion vertically connected to the first guiding rod, the first guiding rod driving the first clamping portion to be guided by the first guiding slot The activity is set on the base. The second clamping arm includes a second guiding rod and an L-shaped second clamping portion fixed perpendicularly to the second guiding rod, the second guiding rod driving the second clamping portion by the second guiding slot The guiding and moving are disposed on the base, and the first clamping portion and the second clamping portion together form a receiving space for fixing the backlight module.

Compared with the prior art, the backlight module fixing fixture fixes the backlight module in two directions by the first clamping arm and the second clamping arm on the base, thereby ensuring that the backlight module is in the testing process. Medium fixed.

Referring to FIG. 1 , a backlight module fixing jig 100 according to an embodiment of the present invention includes a base 110 , a first clamping arm 120 , a second clamping arm 130 , a third clamping arm 140 , and a The adjustment unit 150, a pressing unit 160, and a power socket 170.

The base 110 defines a first guiding slot 112 extending along the first direction X, a second guiding slot 114 extending along the second direction Y, and a first guiding slot extending along the first direction X and the first guiding slot 112. The third guiding groove 116 is spaced apart, and the first direction X and the second direction Y are perpendicular to each other.

The first clamping arm 120 includes a first guiding rod 122 and a first clamping portion 124 movably connected to the first guiding rod 122. The first guiding rod 122 drives the first clamping portion 124 by the first The guide groove 112 is guided to be movably disposed on the base 110. The first guiding portion 124 defines a first guiding through hole 126 extending through the first guiding rod 122 and extending in the second direction Y. The first guiding rod 122 sequentially passes through the first guiding through hole 126. And the first guiding groove 112. The first guiding rod 122 slides the first clamping portion 124 along the first guiding slot 112 , and the first clamping portion 124 slides along the first guiding through hole 126 .

The second clamping arm 130 includes a second guiding rod 132 and an L-shaped second clamping portion 134 fixed perpendicularly to the second guiding rod 132. The second guiding rod 132 drives the second clamping portion 134. The second guiding portion 124 is movably disposed on the base 110, and the first clamping portion 124 and the second clamping portion 134 form a fixed backlight module 200 (refer to FIG. 2). Containing space 180. In the present embodiment, the second guiding rod 132 is vertically disposed through the second clamping portion 134 and is fixed to the second clamping portion 134 .

The third clamping arm 140 includes a third guiding rod 142 and an L-shaped third clamping portion 144 that is vertically movably connected to the third guiding rod 142. The third clamping portion 144 includes a clamping member 146 extending in the second direction Y and a support member 147 fixed perpendicularly to the clamping member 146 and parallel to the surface of the base 110. The clamping member 146 is provided with a second guiding through hole 148 extending in the second direction Y. The third guiding rod 142 sequentially passes through the second guiding through hole 148 and the third guiding groove 116 of the clamping member 146 to drive the third clamping portion 144 to be guided by the third guiding groove 116 to be movable on the base. On the platform 110. The clamping member 144 is guided to slide by the second guiding through hole 148.

The adjusting portion 150 includes an adjusting rod 152 and a resisting block 154 . The adjusting rod 152 is movably disposed on the supporting member 147 and fixed to the resisting block 154 . The resisting block 154 is stepped and includes a resisting surface 156 extending in the first direction X.

The pressing portion 160 includes a screw 162 and a pressing piece 164 which is bored and fixed to the pressing piece 164 and screwed onto the base 110. The distance between the tab 164 and the surface of the base 110 can be achieved by screwing or unscrewing the screw 162 out of the base 110.

The backlight module fixing jig 100 has a receiving groove 190 at the edge of the base 110 and a guide rail 192 disposed in the receiving groove 190. The power socket 170 includes a socket body 172 and a cover body 174 hinged to the socket body 172. The socket body 172 is provided with a guide slot 176 at the bottom. The socket body 172 is coupled to the rail 192 by the guide slot 176. The container is accommodating in the storage slot 190. The socket body 172 can be coupled to an external power source (not shown) that powers the circuit board 220 (see Figure 2).

Referring to FIG. 2, when a backlight module 200 needs to be fixed, the first clamping arm 120, the second clamping arm 130, and the third clamping arm 140 are respectively along the first, second, and third guiding slots. 112, 114 and 116 sliding adjustment and screw 162 are unscrewed from the base 110, so that the area of the receiving space 180 is slightly larger than the area of the circuit board 220 of the backlight module 200 and the distance between the pressing piece 164 and the surface of the base 110 is greater than the circuit board. The thickness of 220. The circuit board 220 is placed in the accommodating space 180, and the first clamping arm 120, the second clamping arm 130, and the third clamping arm 140 are respectively along the first, second, and third guiding slots 112, 114, and 116. The sliding adjustment causes the first, second, and third clamping portions 124, 134, and 144 to respectively abut the side of the circuit board 220 to fix the circuit board 220; the screw 162 is screwed into the base 110 to press the pressing piece 164 Circuit board 220. The position of the power outlet 170 is adjusted along the rail 192 such that the power outlet 170 is aligned with the power line 222 of the circuit board 220. The cover 174 is opened, the power cord 222 is inserted into the socket body 172, and the cover 174 is closed, so that the power cord 222 can be kept in good contact with the power socket 170.

After the circuit board 220 is fixed, the adjusting rod 152 is adjusted to abut the resisting surface 156 of the blocking block 154 to a predetermined position in the receiving space 180. The predetermined position is a reflecting plate (not shown, located in the circuit board 220 and the light guide plate 240). And the light guide plate 240 can be assembled to the design position of the circuit board 220, that is, in the assembled backlight module 200, the relative relationship between the light source (not shown) on the circuit board 220 and the light incident surface of the light guide plate 240 is ensured. The position is the position at design time. The abutting block 154 and the clamping member 146 together form an L-shaped receiving space 180a to abut the surface 156 and the side of the clamping member 146 as two adjacent reference sides. When the reflective plate and the light guide plate 240 are assembled, the reflective plate and the light guide plate 240 can be quickly and accurately assembled to the design position of the circuit board 220 by using the two reference sides as a reference.

In summary, the backlight module fixing jig 100 is disposed in two directions X and Y by the first clamping arm 120, the second clamping arm 130 and the third clamping arm 140 on the base 110. The circuit board 220 is fixed to ensure that the backlight module 200 is well fixed during the testing process; the pressing portion 160 further fixes the circuit board 220; the clamping member 146 and the resisting block 154 are assembled together to form a rear reflecting plate and a light guiding plate 240. Fast and accurate assembly; power outlet 170 facilitates electrical connection of circuit board 220 to an external power source.

In addition, the present invention also includes other embodiments, such as in one other embodiment, the third clamping arm 140 is omitted, and the L-shaped second clamping portion 134 of the second clamping arm 130 is directly used for rear assembly. The reflector and the light guide plate 240 are assembled and assembled, which is more convenient and quicker. In still another embodiment, the adjustment portion 150 is omitted, and the reflection plate and the light guide plate 240 are directly positioned by using the L-shaped third clamping portion 144 as two reference sides, and the third clamping portion 144 The first clamping portion 124 and the second clamping portion 134 together form the receiving space 180.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

100. . . Backlight module fixing fixture

110. . . Abutment

120. . . First clamping arm

130. . . Second clamping arm

140. . . Third clamping arm

150. . . Adjustment department

160. . . Pressure holding part

170. . . Power outlet

112. . . First channel

114. . . Second guide slot

116. . . Third channel

122. . . First guide

124. . . First clamping part

126. . . First guiding through hole

132. . . Second guide

134. . . Second clamping part

200. . . Backlight module

180,180a. . . Containing space

142. . . Third guide

144. . . Third clamping part

146. . . Clamping piece

147. . . supporting item

148. . . Second guiding through hole

152. . . Adjustment rod

154. . . Resisting block

156. . . Resisting surface

162. . . Screw

164. . . Tablet

190. . . Storage slot

192. . . guide

172. . . Socket body

174. . . Cover

176. . . Guide slot

220. . . Circuit board

222. . . power cable

240. . . Light guide

FIG. 1 is a perspective view of a backlight module fixing jig according to an embodiment of the present invention.

2 is a schematic view of the backlight module fixing fixture fixed backlight module of FIG. 1 .

100. . . Backlight module fixing fixture

110. . . Abutment

120. . . First clamping arm

130. . . Second clamping arm

140. . . Third clamping arm

150. . . Adjustment department

160. . . Pressure holding part

170. . . Power outlet

112. . . First channel

114. . . Second guide slot

116. . . Third channel

122. . . First guide

124. . . First clamping part

126. . . First guiding through hole

132. . . Second guide

134. . . Second clamping part

142. . . Third guide

180. . . Containing space

146. . . Clamping piece

144. . . Third clamping part

148. . . Second guiding through hole

147. . . supporting item

154. . . Resisting block

152. . . Adjustment rod

162. . . Screw

156. . . Resisting surface

190. . . Storage slot

164. . . Tablet

172. . . Socket body

192. . . guide

176. . . Guide slot

174. . . Cover

Claims (8)

A backlight module fixing jig is improved in that it comprises: a base having a first guiding groove extending in a first direction and a second guiding groove extending in a second direction, the first direction being The second direction is perpendicular to each other; a first clamping arm includes a first guiding rod and a first clamping portion vertically connected to the first guiding rod, the first guiding rod driving the first clamping portion Guided by the first guiding groove and movably disposed on the base; and a second clamping arm comprising a second guiding rod and an L-shaped second clamping portion fixed perpendicularly to the second guiding rod The second guiding rod drives the second clamping portion to be guided by the second guiding groove and is movably disposed on the base. The first clamping portion and the second clamping portion form a backlight for fixing the backlight. The housing space of the module. The backlight module fixing jig according to claim 1, wherein the base further defines a third guiding slot extending along the first direction and spaced apart from the first guiding slot, the base further comprising a third clamping arm, the third clamping arm includes a third guiding rod, an L-shaped third clamping portion vertically connected to the third guiding rod, and the third guiding rod drives the third clamping portion The third guiding portion, the first clamping portion and the second clamping portion jointly form the receiving space. The backlight module fixing jig according to claim 2, wherein the third clamping portion includes a clamping member extending along the second direction, and one of the clamping members is vertically fixed and parallel to the clamping member. a support member on the surface of the base plate, the backlight module fixing jig further includes an adjusting portion, the adjusting portion includes an adjusting rod and a resisting block, the adjusting rod is movably disposed on the supporting member and is opposite to the supporting member Hold the block. The backlight module fixing jig according to claim 3, wherein the resisting block has a stepped shape and includes a resisting surface extending in the first direction. The backlight module fixing jig according to the first aspect of the invention, wherein the backlight module fixing jig further comprises a pressing portion, the pressing portion comprises a screw and a pressing piece, and the screw is fixedly disposed. On the tablet and screwed onto the base. The backlight module fixing jig according to the first aspect of the invention, wherein the backlight module fixing jig further comprises a power socket and a receiving slot formed at an edge of the base, the receiving slot is for receiving the Power outlet. The backlight module fixing jig according to claim 6, wherein the power socket comprises a socket body and a cover body hinged with the socket body. The backlight module fixing jig according to the seventh aspect of the invention, wherein the backlight module fixing jig is provided with a guide rail in the receiving slot, and the socket body is provided with a guiding slot at the bottom, the socket body The guide slot is movably received in the receiving groove by engaging with the guide rail.