8results about How to "Small tolerance" patented technology

A scroll compressor is provided. The scroll compressor includes a housing, a fixed scroll member and an orbiting scroll member housed in the housing, the orbiting scroll member configured to be engaged with the fixed scroll member and orbitable with respect to the fixed scroll member to compress a working fluid, a partition configured to partition a space in the housing into a high-pressure chamber and a low-pressure chamber, and a positioning member provided between the partition and the fixed scroll member and configured to position one of the partition and the fixed scroll member with respect to the other of the partition and the fixed scroll member upon assembly. According to the scroll compressor of the present disclosure, by positioning the positioning member directly between the partition and the fixed scroll member, a tolerance chain between a discharge assembly and the fixed scroll member is shortened, and a tolerance between the discharge assembly and the fixed scroll member can be reduced.

A housing unit (2) for a semiconductor power module (1) comprises a molded body (3) configured to enclose electrical components of the semiconductor power module (1). The housing unit (2) further comprises at least one terminal (10) integrated and at least partially embedded in the molded body (3) such that the at least one terminal (10) extends through the molded body (3) and an end (11) of the at least one terminal (10) is exposed at an upper surface (6) of the molded body (3) with respect to a stacking direction (A) of the semiconductor power module (1). The at least one terminal (10) further comprises at least one sealing structure (13, 14) arranged in a boundary region (5) between the exposed end (11) and the molded edge (4) of the molded body (3), the sealing structure (13, 14) being configured to limit an upper extension of the molded body (3) during formation of the molded body (3).

The utility model relates to vehicle body technical field and provide a kind of instrument panel stiffening beam and vehicle, the utility model discloses instrument panel stiffening beam includes instrument panel stiffening beam main body, and is located at the mounting bracket of stiffening beam main body length direction both ends, each mounting bracket is equipped with the first installation part of being installed in the stiffening beam sub-mounting bracket of instrument panel stiffening beam main body, and the second installation part of being installed in the stiffening beam general mounting bracket of instrument panel stiffening beam main body.The utility model discloses the instrument panel stiffening beam, only needs to adopt one mould processing, this not only can improve production efficiency, also can greatly simplify processing manufacturing process, while the quantity of spare part is less, can reduce the multiple spare parts such as bolt and connecting procedure required in traditional assembly mode, and management and production cost can be reduced, and tolerance in assembly process can be reduced, prevent the problem of not easy assembly when loading.

The subject of the invention is a motor vehicle door lock having a locking mechanism (5) comprising a rotary latch (6) and at least one pawl (7), the rotary latch (6) being engageable in at least one engagement position by means of the pawl (7); a release lever (8), wherein the locking mechanism (5) can be switched from the engagement position to a release position by means of the release lever (8); the invention relates to a locking mechanism (5) for a motor vehicle, comprising an electric drive unit (10, 11, 12) and an actuating lever (9), the actuating lever (9) being actuatable by the electric drive unit (10, 11, 13) and the locking mechanism (5) being at least indirectly unlockable by means of the actuating lever (9), the actuating lever (9) and the gear (10) of the electric drive unit (10, 11, 13) being mountable on a common shaft (19).

The invention discloses a pulse valve, and relates to the technical field of valves, the pulse valve comprises a shell assembly, a coil assembly, a permanent magnet assembly and a sealing assembly, the coil assembly and the permanent magnet assembly are both located in the shell assembly, the coil assembly is located on the periphery of the permanent magnet assembly, and the sealing assembly is located on the periphery of the permanent magnet assembly. The permanent magnet assembly comprises a permanent magnet, stop iron and an armature which are sequentially arranged in the axial direction of the shell assembly, the periphery of the end, close to the stop iron, of the armature is sleeved with an elastic element, the end, away from the stop iron, of the armature is connected with the sealing assembly, the armature can reciprocate in the axial direction of the shell assembly, and the elastic element is connected with the shell assembly. And the sealing assembly is driven to move back and forth. According to the invention, the number of size chain participation rings can be reduced, the performance consistency of products in batch production is improved, and meanwhile, the processing cost is reduced.

The invention discloses electronic equipment, relates to the technical field of electronic products, and is used for solving the technical problem that a key module is easily wrongly assembled in the assembling process. The electronic equipment comprises a key body and a shell, the key body comprises a pressing structure and a triggering structure, the pressing structure comprises an appearance face, the triggering structure is located on the side, opposite to the appearance face, of the pressing structure, the triggering structure comprises a first section and a second section which are arranged in the first direction, and the first section is located between the pressing structure and the second section; the second section comprises a first body part and a buffer piece; the buffer piece is arranged at one end, far away from the first section, of the first body part; a first communicating hole is formed in the shell, the second section is arranged in the first communicating hole, and the first communicating hole comprises a first hole opening facing the pressing structure; the orthographic projection of the first section on the reference plane is a first projection, the orthographic projection of the first orifice on the reference plane is a second projection, and the area of the first projection is larger than that of the second projection; wherein the reference plane is perpendicular to the first direction.

The present application is suitable for the field of flexible printed circuit board testing, and provides a test method and device for improving FPC test yield from process and technology. The method comprises: measuring the size parameters of the flexible board in advance, determining the positioning size and tolerance of the first needle mold; placing the flexible board on the first needle mold, and positioning in X and Y directions; taking the contact surface of the first needle mold and the second needle mold as the size chain reference surface in the Z-axis direction, so that the relative distance between the tip of the long probe and the test point of the flexible board forms a closed loop; the bottom surface of the first needle mold is in contact with the top surface of the second needle mold, and at the same time the long probe touches the test point of the flexible board; the circuit is turned on, and the test is completed. The positioning of the product is carried out on the flexible board shape and B2B shape, the test yield is improved from the production process, the processing reference is changed from the processing technology, the size chain is shortened, the tolerance of the closed loop is reduced, and the test yield is improved.

The utility model discloses a kind of mobile base type permanent magnet speed regulator of air-cooled heat dissipation, including motor, base, speed regulation mechanism and driving mechanism, motor is set on base;Base includes upper base, lower base and multiple linear guides, linear guide is symmetrically set on lower base, the slider of linear guide is connected with upper base;Speed regulation mechanism is connected with the motor shaft of motor, and heat sink and flow guide fan blade are set on speed regulation mechanism;Driving mechanism is set on lower base, and driving mechanism is connected with upper base. Advantage: linear guide is rolling friction, and small friction makes that wear is smaller, can prolong service life, the tolerance between each structure inside linear guide is small, the gap between each structure is small, upper base is not easy to produce shaking in other direction, can reduce the noise generated by vibration;Heat sink and flow guide fan blade are heat dissipated to speed regulation mechanism, avoid high temperature to influence the normal operation of device and service life.