CN1660559B - 应用脊增强焊接强度的树脂部件的激光焊接 - Google Patents

应用脊增强焊接强度的树脂部件的激光焊接 Download PDF

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CN1660559B
CN1660559B CN2005100529213A CN200510052921A CN1660559B CN 1660559 B CN1660559 B CN 1660559B CN 2005100529213 A CN2005100529213 A CN 2005100529213A CN 200510052921 A CN200510052921 A CN 200510052921A CN 1660559 B CN1660559 B CN 1660559B
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base portion
cross
ridge
section
resin
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CN1660559A (zh
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大西纯
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Denso Corp
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Denso Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
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    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission welding
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/61—Joining from or joining on the inside
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • G—PHYSICS
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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
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Abstract

激光焊接两个树脂部件的方法包括下列步骤：提供各自具有连接表面的第一和第二树脂部件；在第一和第二树脂部件之一的连接表面上形成具有一定长度的脊，脊包括基部和顶部，顶部的宽度以及宽度增大比例比基部的宽度和宽度增大比例小；将第一和第二树脂部件之一放置在另一树脂部件上，以使第一和第二树脂部件的连接表面互相朝向对方，脊置于它们之间；将第一和第二树脂部件之一向另外一个树脂部件挤压以完全压碎脊的顶部；在将第一和第二树脂部件之一连续地挤压靠在另一树脂部件上时，用激光束照射脊的基部。

Description

应用脊增强焊接强度的树脂部件的激光焊接
相关申请的交叉参考
本申请要求于2004年2月27日提交的日本专利申请2004-54406的优先权，其内容作为参考引入本申请。
技术领域
本发明通常涉及到树脂部件的激光焊接。更特别地，本发明涉及一种树脂制品，该制品具有用来增强树脂制品与相配树脂制品之间激光焊接的焊接强度的脊，涉及一种应用这种脊激光焊接两个树脂制品的方法，以及涉及一种用该激光焊接方法制成并用于容纳电气或电子元件的壳体。
背景技术
现有多种通过激光焊接连接树脂部件的方法。
图7A显示通过激光焊接连接两个树脂部件的第一个示例。图中，两个树脂部件101和111各自具有一个连接表面。激光焊接时，树脂部件101和111的连接表面首先开始互相接触。第二步，在激光焊接的挤压步骤中，树脂部件111挤压在树脂部件101上以消除两个连接表面之间的间隙。第三步，在激光焊接的照射和熔化步骤中，树脂部件101的连接表面被激光束照射并熔化，因此将两个树脂部件101和111连接在一起。
图7A中，树脂部件101和111的连接表面通过树脂模制规则形成，没有任何缩痕或者波纹。因此，在挤压步骤中可以完全消除两个树脂部件的连接表面之间的间隙。
然而，如图7B所示，当树脂部件101的连接表面由树脂模制非规则形成时，在挤压步骤中完全消除两个树脂部件的连接表面之间的间隙或者将间隙减少至小于0.1mm的水平变得困难起来。从而，在接下来的照射和熔化步骤中，由照射在树脂部件101的连接表面上的激光束产生的热量不能有效地传导到树脂部件111的连接表面。其结果是两个树脂部件101和111不能高焊接强度地焊接在一起。
图8A显示通过激光焊接连接两个树脂部件的第二个示例。图中，两个树脂部件201和211各自具有一个连接表面。树脂部件201还具有形成在树脂部件201的连接表面上的脊202。脊202具有形状为三角形的横截面。三角形的一条边处在连接表面上，另外两条边在正对连接表面的顶点处形成一个锐角。激光焊接时，树脂部件211首先放置在树脂部件201上以使两个树脂部件的连接表面互相朝向对方，脊202置于它们之间。第二步，在激光焊接的挤压步骤中，树脂部件211向树脂部件201挤压以使脊202被完全压碎，因此消除了两个树脂部件的连接表面之间的间隙。第三步，在激光焊接的照射和熔化步骤中，树脂部件201的连接表面被激光束照射并熔化，因此将两个树脂部件201和211连接在一起。
图8A中，树脂部件201和211的连接表面以及脊202的表面通过树脂模制规则地形成，而没有任何缩痕或者波纹。因此，在挤压步骤中脊202可以被完全压碎以消除两个树脂部件的连接表面之间的间隙。
然而，如图8B所示，当树脂部件201的连接表面以及脊202的表面由树脂模制非规则地形成时，在挤压步骤中完全压碎脊202以完全消除两个树脂部件的连接表面之间的间隙变得困难起来。从而，在接下来的照射和熔化步骤中，两个树脂部件201和211间的焊接区变小，其结果是激光焊接的焊接强度低。
图9A显示通过激光焊接连接两个树脂部件的第三个示例。图中，两个树脂部件301和311各自具有一个连接表面。树脂部件301还具有形成在树脂部件301的连接表面上的脊302。脊302具有形状为三角形的横截面。三角形的一条边位于连接表面上，另外两条边在正对连接表面的顶点处形成一个钝角。激光焊接时，树脂部件311首先放置在树脂部件301上以使两个树脂部件的连接表面互相朝向对方，脊302置于它们之间。第二步，在激光焊接的挤压步骤中，树脂部件311挤靠树脂部件301以压碎脊302的顶部，在两个树脂部件的连接表面之间剩下了脊的残余部分。第三步，在激光焊接的照射和熔化步骤中，脊302的残余部分被激光束照射并熔化，因此将两个树脂部件301和311连接在一起。
图9A中，树脂部件301和311的连接表面以及脊302的表面通过树脂模制规则地形成，没有任何缩痕或者波纹。因此，在挤压步骤中脊302的顶部可以被压碎，剩下的脊的残余部分可以被照射并熔化。
然而，如图9B所示，当树脂部件301的连接表面以及脊302的表面由树脂模制非规则地形成时，在挤压步骤中压碎脊302的顶部变得困难起来。相应地，由于脊302表面的不规则性，在脊302的顶部和树脂部件311的连接表面之间存在间隙。从而，在接下来的照射和熔化步骤中，由照射在树脂部件301的脊302上的激光束产生的热量不能有效地传导到树脂部件311的连接表面。其结果是两个树脂部件301和311不能高焊接强度地焊接在一起。
发明内容
考虑到上面问题提出本发明。
因此，本发明主要目的是提供一种树脂制品，该制品具有确保树脂制品与相配树脂制品之间激光焊接的焊接强度的改进结构；应用这种结构激光焊接两个树脂部件的方法；以及用该激光焊接方法制成并用于容纳电气或电子元件的壳体。
根据本发明的第一方面，树脂制品包括：
具有将通过激光焊接与相配树脂制品相连接的连接表面的本体；以及
脊，所述脊用于通过将两个制品之一挤压靠在另一个上并用激光束照射脊而在本体和相配树脂制品的连接表面之间形成焊接；脊形成在本体的连接表面上且具有一定长度，并且包括形成在连接表面上的基部和形成在基部上的顶部，基部和顶部都沿着脊的纵向方向延伸；将被激光束照射的基部具有垂直于脊纵向方向的横截面，该横截面在基部和顶部之间的界面处具有最小宽度、且宽度从界面向本体的连接表面以一预定比例增大；将要被挤压完全压碎的顶部，具有垂直于脊纵向方向的横截面，该横截面从其顶端向基部和顶部之间的界面以一小于基部横截面增大比例的预定比例增大，并且在界面处具有最大宽度，该最大宽度等于或小于基部横截面的最小宽度。
应用这种结构，当树脂制品与相配树脂制品通过激光焊接连接时，不管脊的表面和本体的连接表面是否为不规则形成，在激光焊接的挤压步骤中脊的顶部可以被完全压碎。相应地，脊的基部可以与相配树脂制品毫无间隙地密切接触。
而且，照射并熔化具有更大的宽度和增大比例的横截面的基部，可以在两个树脂制品之间获得足够大的焊接区以确保激光焊接的高焊接强度。
上面的根据本发明的树脂制品，脊顶部横截面的形状可以为三角形，该三角形有一条边位于基部和顶部之间的界面上、并且顶点形成横截面顶端。顶部的最大宽度，也即三角形一条边的长度，可以等于或小于基部横截面的最小宽度。
顶部横截面的形状也可以为梯形，该梯形的较长边位于基部和顶部之间的界面上，较短边形成横截面的顶端。
而且，顶部横截面的形状也可以为矩形，该矩形的一对相对边之一位于基部和顶部之间的界面上、另外一条边形成横截面的顶端。
另外，上面的根据本发明的树脂制品，顶部横截面增大的预定比例可以从顶部横截面的顶端向基部和顶部之间的界面不连续地变化。
此外，顶部横截面增大的预定比例可以从顶部横截面的顶端向基部和顶部之间的界面连续地变化。
根据本发明的第二方面，激光焊接两个树脂部件的方法包括下列步骤：
提供各自具有连接表面的第一和第二树脂部件；
在第一和第二树脂部件之一的连接表面上形成具有一定长度的脊，脊包括形成在连接表面上的基部和形成在基部上的顶部，基部和顶部都沿着脊的纵向方向延伸；基部具有垂直于脊纵向方向的横截面，该横截面在基部和顶部之间的界面处具有最小宽度且宽度从界面向连接表面以一预定比例增大；顶部具有垂直于脊纵向方向的横截面，该横截面从其顶端向基部和顶部之间的界面以一小于基部横截面增大比例的预定比例增大，并且在界面处具有最大宽度，该最大宽度等于或小于基部横截面的最小宽度；
将第一和第二树脂部件之一放置在另一树脂部件上，以使第一和第二树脂部件的连接表面互相朝向对方，脊置于它们之间；
将第一和第二树脂部件之一挤压靠在另一树脂部件上以完全压碎脊的顶部，在第一和第二树脂部件的连接表面之间仅剩下脊的基部；以及
在将第一和第二树脂部件之一连续地挤压靠在另一树脂部件上时，用激光束照射脊的基部。
应用这种激光焊接方法，不管脊的表面和两个树脂部件的连接表面是否为不规则形成，在挤压步骤中脊的顶部可以被完全压碎。相应地，脊的基部可以与相配的树脂部件的连接表面毫无间隙地密切接触。
而且，照射并熔化具有更大宽度和增大比例的横截面的基部，可以在两个树脂部件间获得足够大的焊接区以确保激光焊接的高焊接强度。
根据本发明的第三方面，提供用于容纳至少一个电气或电子元件的壳体。该壳体用根据本发明的方法激光焊接至少两个树脂部件制成。
上面的壳体，不采用任何振动将树脂部件连接在一起。进一步，用根据本发明的方法激光焊接树脂部件过程中，热量仅在形成并被激光束照射的脊的基部产生。从而，容纳在壳体内的至少一个电气或电子元件免受否则施加到连接树脂部件的振动或热量破坏。
上面的根据本发明的壳体，容纳至少一个电气或电子元件，可以是电子传感器，例如G传感器。
附图说明
从下文给出的更加详细的描述和本发明优选实施例的附图，可以更加充分地理解本发明。然而，不应该将本发明局限于特定的实施例，实施例仅仅是为了更好的解释和理解本发明。
图1A是根据本发明第一实施例的树脂制品的透视图；
图1B是图1的树脂制品的脊的放大图；
图2是显示在树脂制品规则地形成的情况下图1中树脂制品与相配树脂制品的激光焊接的方法的示意图；
图3是显示在树脂制品非规则地形成的情况下图1中树脂制品与相配树脂制品的激光焊接的示意图；
图4A是包括根据本发明的第二实施例的树脂壳体的加速度检测装置的示意图；
图4B是放大图，显示了形成在树脂开口容器的一个端面上的脊，树脂开口容器将被激光焊接到树脂盖上以形成图4A的树脂壳体；
图5是显示将树脂开口容器焊接到树脂盖上以形成图4A的树脂壳体的示意图；
图6A-6E是显示根据本发明的图1B的脊的变化的示意图；
图7A是显示在两个树脂部件都规则地形成的情况下采用第一种现有方法激光焊接两个树脂部件的示意图；
图7B是显示在两个树脂部件之一非规则地形成的情况下采用第一种现有方法激光焊接两个树脂部件的示意图；
图8A是显示在两个树脂部件都规则地形成的情况下采用第二种现有方法激光焊接两个树脂部件的示意图；
图8B是显示在两个树脂部件之一非规则地形成的情况下采用第二种现有方法激光焊接两个树脂部件的示意图；
图9A是显示在两个树脂部件都规则地形成的情况下采用第三种现有方法激光焊接两个树脂部件的示意图；以及
图9B是显示在两个树脂部件之一非规则地形成的情况下采用第三种现有方法激光焊接两个树脂部件的示意图。
具体实施方式
下文中将参考图1-9对本发明的优选实施例进行描述。
第一实施例
本实施例显示了如图1A-1B所示的、根据本发明的树脂制品1，以及根据本发明将树脂制品1与相配树脂制品激光焊接的方法。
本实施例中树脂制品1是开口盒，通过激光焊接将其与相配树脂制品11连接，本实施例中相配树脂制品11是覆盖开口盒的盖子。树脂制品1和2都是由树脂模制制成。
如图1A中所示，树脂制品1具有上端面2和脊3。上端面2作为将要通过激光焊接与树脂制品11的连接表面连接的连接表面。脊3形成在上端面2上且具有一定长度。
参考图1B，脊3包括形成在上端面2上的基部3a和形成在基部3a上的顶部3b，两部分都沿着脊3的纵向方向延伸。
基部3a具有垂直于脊3纵向方向的横截面，本实施例中该横截面形状为梯形。相应地，基部3a的横截面在基部3a和顶部3b之间的界面3c处具有最小宽度，并且从界面3c向上端面2以一给定比例增大。
顶部3b具有垂直于脊3纵向方向的横截面，本实施例中该横截面形状为三角形。
三角形的一条边处在界面3c上，另外两条边在正对界面3c的顶点处形成一个锐角。换句话说，顶部3b的横截面从其顶端(即三角形的顶点)向界面3c以一小于基部3a横截面增大比例的给定比例增大。
进一步，顶部3b的最大宽度也即界面3c上三角形边的长度，等于基部3a横截面的最小宽度。
树脂制品1可按照如下方式通过激光焊接与树脂制品11连接在一起。
第一步，参考图2，树脂制品1固定成使其上端面2朝上。随后，树脂制品11放置在树脂制品1上，以使树脂制品1的上端面2朝向树脂制品11的连接表面，脊3置于它们之间。
第二步，在激光焊接的挤压步骤中，树脂制品11通过夹具(图中没有显示)挤压靠在树脂制品1上，直到脊3的顶部3b被完全压碎。
应该注意到，在图2中，上端面2和脊3的表面通过树脂模制规则地形成，而没有任何缩痕或者波纹。然而，即使上端面2和脊3的表面是通过树脂模制非规则地形成，如图3所示，仍然可以完全压碎脊3的顶部3b。这是因为顶部3b的横截面具有如前所述的较小的宽度和增大比例。
从而，脊3的基部3a与树脂制品11的连接表面毫无间隙地密切接触。
第三步，在激光照射和熔化步骤中，在树脂制品11被连续地压靠在树脂制品1上时，用激光束照射脊3的基部3a。结果，基部3a的树脂被熔化并附着在树脂制品11的连接表面上，因此将两个树脂制品1和11连接在一起。
还应该注意到，因为基部3a的横截面具有如前所述的较大的宽度和增大比例，在两个树脂制品1和11之间获得足够大的焊接区是可能的。
从而，树脂制品1和11被高焊接强度地焊接在一起。
总之，根据本发明的树脂制品1包括上端面2和脊3。
上端面2将通过激光焊接与相配树脂制品(例如本实施例中的盖子11)相连接。
脊3形成在上端面2上并具有一定长度，其包括形成在上端面2上的基部3a和形成在基部3a上的顶部3b，基部和顶部都沿脊3的纵向方向延伸。
基部3a具有垂直于脊3纵向方向的横截面，该横截面在基部3a和顶部3b之间的界面3c处具有最小宽度，并且从界面3c向上端面2以一预定比例增大。
顶部3b具有垂直于脊3纵向方向的横截面，该横截面从顶端向基部3a与顶部3b之间的界面3c以一小于基部3a横截面增大比例的预定比例增大，并且在界面3c处具有最大宽度，该最大宽度等于或小于基部3a横截面的最小宽度。
应用这种结构，当树脂制品1与相配树脂制品通过激光焊接连接时，不管脊3和上端面2的表面是否不规则地形成，脊3的顶部3b可以在激光焊接的挤压步骤中被完全压碎。相应地，脊3的基部3a可以与相配树脂制品毫无间隙地密切接触。
进一步，照射并熔化基部3a，可以在两个树脂制品之间获得足够大的焊接区，以确保激光焊接的高焊接强度。
第二实施例
本实施例显示了根据本发明的用于容纳电气或电子元件的树脂壳体。
参考图4A，图中显示了将要安装在汽车前部的加速度检测装置31。加速度检测装置31用来产生预示碰撞或振动发生的加速度信号，并将加速度信号输出到汽车的气囊控制系统。
加速度检测装置31主要包括电路部分41、容纳电路部分41的开口容器51、以及覆盖容器51开口端(即图4A中的上端)的盖子61。
电路部分41包括G传感器(或加速度传感器)42和塑料板43。G传感器42具有传感部分、并依靠传感部分的变形和移动产生加速度信号。塑料板43是玻璃环氧树脂基板，G传感器42和用于输出由G传感器42产生的加速度信号的电路安装在其上。
开口容器51用树脂，例如PBT(聚丁烯)树脂、尼龙树脂以及或类似树脂通过树脂模制制成。容器51整体地形成有连接器端子52，连接器端子支撑容纳在容器51中的电路部分41。连接器端子52用金属材料制成、并用于将电路部分41电连接到外部装置或电路。容器51具有设置有金属衬套的固定部分53，以将容器51固定在汽车上。
开口容器51还具有上端面54，脊55沿着上端面54周边形成在其上、并具有一定长度。脊55的形状与前述实施例中脊3的形状相同。
具体地，参考图4B，脊55具有形成在上端面54上的基部55a和形成在基部55a上的顶部55b，两部分都沿脊55的纵向方向延伸。
基部55a具有垂直于脊55纵向方向的横截面，该横截面形状为梯形。顶部55b具有垂直于脊55纵向方向的横截面，该横截面形状为三角形。三角形的一条边位于基部55a和顶部55b之间的界面上，另外两条边在与界面相对的顶点处一起形成一个锐角。
盖子61也是用树脂，例如PBT树脂、尼龙树脂以及或类似树脂通过树脂模制制成。盖子61将通过激光焊接连接到容器51上，以与容器51一起形成密闭壳体(或容器)71。
容器51与盖子61的激光焊接可如下进行。
第一步，参考图5，容器51以及容纳在其中的电路部分41被固定，使得上端面54朝上。随后，盖子61放置在容器51上，以使51的上端面54朝向盖子61的连接表面(即图5中的下表面)，脊55置于它们之间。
第二步，在激光焊接的挤压步骤中，盖子61通过夹具(图中没有显示)被挤压靠在容器51上，直到脊55的顶部55b被完全压碎。从而，脊55的基部55a与盖子61的连接表面毫无间隙地密切接触。
第三步，在激光照射和熔化步骤中，在盖子61被连续地挤压靠在容器51上时，用激光束照射脊55的基部55a。从而，基部55a的树脂被熔化并附着在盖子61的连接表面上，因此将容器51和盖子61连接在一起。
结果，容器51和盖子61被高焊接强度地焊接在一起，提供了电路部分41容纳在其中的壳体71。
本实施例中，没有施加任何振动将容器51和盖子61连接在一起。而且，热量仅在被激光束照射并熔化的基部55a产生。从而，容纳在壳体71内的G传感器42免受否则将施加到容器51和盖子61的振动或热量破坏。
具体地，G传感器42是不能承受高温的电子装置。因此，如果容器51和盖子61是通过热板焊接连接在一起，G传感器42可能经历高温并受到破坏。
而且，依靠传感部分的变形和移动产生加速度信号的G传感器42必定具有可能发生共振的共振频率。因此，如果容器51和盖子61是通过振动焊接或超声焊接连接在一起，那些焊接过程中的振动频率可能与G传感器42的共振频率一致，因此导致G传感器42被破坏。
变化
在显示和描述本发明的上述特定实施例时，那些实施本发明的人以及本领域熟练人员可以理解，在不离开已经揭示的概念主旨的情况下可以对本发明作出各种修改、变化以及改进。
例如，在本发明的第一个实施例中，垂直于脊纵向方向的脊3的横截面具有如图1B所示的形状。
然而，除图1B所示的形状外，脊3的横截面可以具有各种形状，例如在图6A-6E中所示形状。
图6A中，顶部3b的横截面的形状是与图1B中类似的三角形。特别地，三角形的一条边位于基部3a和顶部3b之间的界面上，另外两条边在与界面相对的顶点处形成一个锐角。然而，图6A中，顶部3b的最大宽度也即界面上三角形边的长度，小于基部3a横截面的最小宽度。
图6B中，顶部3b的横截面的形状为代替了三角形的梯形。该梯形具有一对相对边，相对边中的较长的一条边位于基部3a和顶部3b之间的界面上，而较短的一条边形成横截面的顶端。
图6C中，顶部3b的横截面的形状为具有一对相对边的矩形，相对边之一位于基部3a和顶部3b之间的界面上，而另外一条边形成横截面的顶端。
图6D中，顶部3b的横截面从顶端向基部3a和顶部3b之间的界面以一给定的比例增大，该比例从顶端向界面不连续地改变。
图6E中，顶部3b的横截面从顶端向基部3a和顶部3b之间的界面以一给定的比例增大，该比例从顶端向界面连续地改变。
另外，在本发明的第二个实施例中，壳体71用于容纳G传感器42。
然而，这样的壳体也可以用于容纳任何其它电气或电子元件。
在本领域知识内的这种修改、变化以及改进将包含在权利要求书中。

Claims (17)

1.一种树脂制品，包括：
具有将通过激光焊接与相配树脂制品相连接的连接表面的本体；以及
脊，所述脊用于通过将两个制品之一挤压靠在另一个上并用激光束照射脊而在本体和相配树脂制品的连接表面之间形成焊接；脊形成在本体的连接表面上且具有一定长度，并且包括形成在连接表面上的基部和形成在基部上的顶部，基部和顶部都沿着脊的纵向方向延伸；将被激光束照射的基部具有垂直于脊纵向方向的横截面，该横截面在基部和顶部之间的界面处具有最小宽度、且宽度从界面向本体的连接表面以一预定比例增大；通过挤压将被压碎的顶部具有垂直于脊纵向方向的横截面，该横截面的宽度从其顶端向基部和顶部之间的界面以一小于基部横截面宽度增大比例的预定比例增大，并且在界面处具有最大宽度，该最大宽度等于或小于基部横截面的最小宽度。
2.如权利要求1所述树脂制品，其特征在于，顶部横截面的形状为三角形，该三角形有一条边位于基部和顶部之间的界面上、并且顶点形成横截面顶端；其中，顶部的最大宽度，也即三角形所述一条边的长度等于基部横截面的最小宽度。
3.如权利要求1所述树脂制品，其特征在于，顶部横截面的形状为三角形，该三角形有一条边位于基部和顶部之间的界面上、并且顶点形成横截面顶端；其中，顶部的最大宽度，也即三角形所述一条边的长度小于基部横截面的最小宽度。
4.如权利要求1所述树脂制品，其特征在于，顶部横截面的形状为梯形，该梯形的较长边位于基部和顶部之间的界面上，较短边形成横截面的顶端。
5.如权利要求1所述树脂制品，其特征在于，顶部横截面宽度增大的预定比例从顶部横截面的顶端向基部和顶部之间的界面不连续地变化。
6.如权利要求1所述树脂制品，其特征在于，顶部横截面宽度增大的预定比例从顶部横截面的顶端向基部和顶部之间的界面连续地变化。
7.一种树脂制品，包括：
具有将通过激光焊接与相配树脂制品相连接的连接表面的本体；以及
脊，所述脊用于通过将两个制品之一挤压靠在另一个上并用激光束照射脊而在本体和相配树脂制品的连接表面之间形成焊接；脊形成在本体的连接表面上且具有一定长度，并且包括形成在连接表面上的基部和形成在基部上的顶部，基部和顶部都沿着脊的纵向方向延伸；将被激光束照射的基部具有垂直于脊纵向方向的横截面，该横截面在基部和顶部之间的界面处具有最小宽度、且宽度从界面向本体的连接表面以一预定比例增大；通过挤压将被压碎的顶部具有垂直于脊纵向方向的横截面，顶部横截面的形状为矩形，该矩形的一对相对边之一位于基部和顶部之间的界面上、另外一条边形成横截面的顶端。
8.一种通过激光焊接连接两个树脂部件的方法，包括下列步骤：
提供各自具有连接表面的第一和第二树脂部件；
在第一和第二树脂部件之一的连接表面上形成具有一定长度的脊，脊包括形成在连接表面上的基部和形成在基部上的顶部，基部和顶部都沿着脊的纵向方向延伸；基部具有垂直于脊纵向方向的横截面，该横截面在基部和顶部之间的界面处具有最小宽度且宽度从界面向连接表面以一预定比例增大；顶部具有垂直于脊纵向方向的横截面，该横截面的宽度从其顶端向基部和顶部之间的界面以一小于基部横截面宽度增大比例的预定比例增大，并且在界面处具有最大宽度，该最大宽度等于或小于基部横截面的最小宽度；
将第一和第二树脂部件之一放置在另外一个树脂部件上，以使两个树脂部件的连接表面互相朝向对方，脊置于它们之间；
将第一和第二树脂部件之一挤压靠在另一树脂部件上以压碎脊的顶部，在第一和第二树脂部件的连接表面之间仅剩下脊的基部；以及
在将第一和第二树脂部件之一连续地挤压靠在另一树脂部件上时，用激光束照射脊的基部。
9.如权利要求8所述通过激光焊接连接两个树脂部件的方法，其特征在于，顶部横截面的形状为三角形，该三角形有一条边位于基部和顶部之间的界面上、并且顶点形成横截面顶端；其中，顶部的最大宽度，也即三角形所述一条边的长度等于基部横截面的最小宽度。
10.如权利要求8所述通过激光焊接连接两个树脂部件的方法，其特征在于，顶部横截面的形状为三角形，该三角形有一条边位于基部和顶部之间的界面上、并且顶点形成横截面顶端；其中，顶部的最大宽度，也即三角形所述一条边的长度小于基部横截面的最小宽度。
11.如权利要求8所述通过激光焊接连接两个树脂部件的方法，其特征在于，顶部横截面的形状为梯形，该梯形的较长边位于基部和顶部之间的界面上，较短边形成横截面的顶端。
12.如权利要求8所述通过激光焊接连接两个树脂部件的方法，其特征在于，顶部横截面宽度增大的预定比例从顶部横截面的顶端向基部和顶部之间的界面不连续地变化。
13.如权利要求8所述通过激光焊接连接两个树脂部件的方法，其特征在于，顶部横截面宽度增大的预定比例从顶部横截面的顶端向基部和顶部之间的界面连续地变化。
14.一种通过激光焊接连接两个树脂部件的方法，包括下列步骤：
提供各自具有连接表面的第一和第二树脂部件；
在第一和第二树脂部件之一的连接表面上形成具有一定长度的脊，脊包括形成在连接表面上的基部和形成在基部上的顶部，基部和顶部都沿着脊的纵向方向延伸；基部具有垂直于脊纵向方向的横截面，该横截面在基部和顶部之间的界面处具有最小宽度且宽度从界面向连接表面以一预定比例增大；顶部具有垂直于脊纵向方向的横截面，顶部横截面的形状为矩形，该矩形的一对相对边之一位于基部和顶部之间的界面上、另外一条边形成横截面的顶端；
将第一和第二树脂部件之一放置在另外一个树脂部件上，以使两个树脂部件的连接表面互相朝向对方，脊置于它们之间；
将第一和第二树脂部件之一挤压靠在另一树脂部件上以压碎脊的顶部，在第一和第二树脂部件的连接表面之间仅剩下脊的基部；以及
在将第一和第二树脂部件之一连续地挤压靠在另一树脂部件上时，用激光束照射脊的基部。
15.一种用于容纳至少一个电气或电子元件的壳体，该壳体采用如权利要求8或14所述方法通过激光焊接将至少两个树脂部件连接在一起制成。
16.如权利要求15所述壳体，其特征在于，容纳在壳体中的至少一个电气或电子元件是电子传感器。
17.如权利要求16所述壳体，其特征在于，电子传感器是G传感器。
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