53results about How to "Reduce welding parts" patented technology

The invention relates to a hydraulic shock absorber. A piston (24) connected with a piston rod (27) is fitted in a cylinder (3) having a hydraulic fluid sealed therein. A damping force is generated through extension (31) and compression disk valves (32) and an orifice (33). Vehicle height adjustment is performed with a self-leveling mechanism (S) by transferring the hydraulic fluid between the cylinder and a hydraulic fluid tank (10). A bladder (12) of the hydraulic fluid tank (10) is clamped between an outer flange portion (9) of a partition member (8) and a casing (2). Because the hydraulicfluid tank is formed without welding, it is possible to avoid contamination of the hydraulic fluid by welding sputter and thermal deformation. Provision of an O-ring (49) on the outer flange portion can reduce the pressure acting from a reservoir (11) on the clamped portion of the bladder (12) and hence prevent dislodging of the bladder.

There is provided a crawler frame having a centre frame and right and left track frames disposed at the right and left sides of the centre frame so as to extend in a back and forth direction, wherein legs for connecting a central frame section of the centre frame to the track frames are formed from cast steel in order that washing can be easily done by reducing the amount of mud to be adhered to and deposited on the legs and in order that easy manufacture may be possible.

To restrain generation of a sound from a heat shielding cover for covering a part of an exhaust pipe, in an exhaust system of a vehicular engine for connecting the upstream end of the exhaust pipe to a cylinder head of the engine mounted on a vehicle, and connecting an exhaust muffler to the downstream end of the exhaust pipe. A stay 25 having a support plate part 25b curved so as to cover a part of the outer periphery of the exhaust pipe 17 from the outside, is fixed to the heat shielding cover 22 for covering a part near at least the engine of the exhaust pipe 17. The support plate part 25b for sandwiching a vibration control member 26 between the part and the outer periphery of the exhaust pipe 17, is installed in the exhaust pipe 17 by fastening of a band member 29 for sandwiching a vibration control member 27 between the member and the support plate part 25b.

The invention provides a mechanical connection conducting cooling type semiconductor laser unit stack packaging structure which is used for improving the reliability of a product and prolonging the service life of the product. On an insulation structure, a laser unit stack is located in the middle, a positive electrode connecting block and a negative electrode connecting block are located on the two sides of the laser unit stack, the positive electrode connecting block and the negative electrode connecting block are fixedly connected with a basic heat sink in the mode that fastening screws obliquely penetrate through the insulation structure downwards, the opposite inner side faces of the positive electrode connecting block and the negative electrode connecting block are both slopes, the two slopes are closed downwards overall, and the outer side faces at the two ends of the whole laser unit stack are also slopes which are matched with the two slopes respectively, so that under the screwing effect of the fastening screws arranged obliquely downwards, all chip modules are pressed to the middle and downwards through the positive electrode connecting block and the negative electrode connecting block, and therefore the mechanical connection conducting cooling type semiconductor laser unit stack packaging structure is finally acquired.

The invention provides a crawler frame, which is formed by a center frame and left and right track frames extending forward and backward on the left and right sides of the center frame, and is made of cast steel castings to connect the center frame part of the center frame and the track frame. Outriggers, the structure of the outriggers connecting the center frame of the track frame makes the soil rarely adhere to and accumulate, so it is easy to clean and simple to manufacture.