JPH0424402Y2 - - Google Patents

Description

[Detailed explanation of the idea] 〓Industrial application field〓 This invention relates to a tape measure.

〓Prior art〓 Various types of conventional tape measures with stop devices are known, but the press-fit piece that stops the rule of the tape measure is not pressed against the rule in a screw-type manner with a button, but the press-fit piece that stops the rule of the tape measure is The tip will come into contact with the rule at an angle, making it impossible to efficiently transmit the pressing force of the pressure welding piece to the rule. Also, the accuracy of the joint between the button and the pressure welding piece, which is in a screw-like relationship, may be affected. Unless the height was increased, it could not be operated smoothly enough.

Furthermore, in the case of a device in which the pressure welding piece contacts the rule perpendicularly, the pressure welding piece is pressed against the rule by pressing the button, but as soon as the button is released, the pressure of the pressure welding piece against the rule is released. So I ended up pulling the rules into the case. Furthermore, since the force of pressing the button was directly transmitted to the rule via the pressure contact piece, more pressure than necessary was applied to the rule.

As a solution to this situation, Jikoko 56
The tape measure disclosed in Publication No. 24884 presses the top of the press piece with the cam surface of the locking part provided on the push button by operating a seesaw type push button, and one end is attached to the spring support piece on the press piece. , the other end is fixed to a spring receiving piece provided at the lower end of the guide of the pressure welding piece, and the pressure welding piece is pressed against the rule against the biasing force of the spring, and when releasing the pressure of the pressure welding piece against the rule, the above-mentioned seesaw type is used. The cam surface of the locking part that was in contact with the top of the pressure welding piece is moved by operating the push button, and the pressure welding piece is pushed back by the biasing force of the spring, thereby separating the rule and the pressure welding piece. As a result, the pressing piece slides into pressure contact with the rule in a direction perpendicular to the rule, effectively transmitting the elasticity of the pressing piece itself to the rule, and prevents applying an excessive pressing force to the rule.

In addition, there is a tape measure locking device that does not use a spring and has a configuration disclosed in Japanese Utility Model Publication No. 60-9683, but the device shown here has a hook, a hollow space, or a narrow squeezer at the lower end of the tumbler knob. It is constructed by forming parts, depressions, shoes, etc., which engage with the driven member in a more complicated manner.

Problems that the invention attempts to solve
It is constructed so that the pressure contact piece is pressed against the rule against the urging force of the spring, and the pressure contact piece is separated from the rule by the urging force of the spring, but the spring receiving piece is installed inside a small tape measure case with little internal space. In addition, a spring support piece must be provided on the pressure contact piece, and a spring is interposed between the two, which not only complicates the structure, but also causes various problems in manufacturing the parts and assembling the tape measure. Ta.

In addition, the tape measure locking device shown in Utility Model Publication No. 1985-9685 presses a tumbler knob that swings in a seesaw style to press the driven member against the rule and release the pressure. The tumbler knob, which has hooks, cavities, constrictions, recesses, shoes, etc., must be engaged with the driven member in a complicated manner in a small tape measure case, and its complicated shape makes it difficult to use the parts. In addition to being extremely complicated and requiring skill in manufacturing and assembling the tape measure, there were also problems such as the tape measure being easily damaged during use.

This idea was made with the aim of simplifying such a complicated configuration, improving productivity and saving labor.

〓Means for solving the problem〓 The tape measure of this invention has a drawer opening for pulling out the rules wound and stored in the case, and an elastic body is provided inside the drawer opening of the case so as to intersect with the rule. A tongue-shaped press-contact piece is provided so as to be freely slidable, and the tips of the support rods protruding from the left and right sides of the press-contact piece are fitted into support slits in the case body, and a central part is provided above the drawer opening in a seesaw manner. A pivoted push button is provided, a locking portion protruding in an L-shape is provided at the lower end of the push button, the lower surface of the locking portion of the push button is a cam surface, and the cam surface has a first cam surface and a second cam surface. The distance between the first cam surface and the fulcrum of the seesaw type push button is larger than the distance between the second cam surface and the fulcrum of the seesaw type push button, and the distance between the cam surface and the pressure contact piece is When the tops of the push buttons are brought into contact and the lower end of the push button is pushed into the case, the pressure contact piece releases pressure contact with the rule, and when the upper end of the push button is pushed into the case, the support rod of the pressure contact piece is deformed. The problem was solved by configuring the pressure welding piece and the rule to come into pressure contact.

〓Operation〓 Since the tape measure of the present invention has the above-mentioned structure, by pressing the seesaw type push button and swinging the locking part, the tongue-shaped pressure welding piece is pressed, and the elastic force of the support rod of the pressure welding piece is When the pressure welding piece is moved forward against the pressure, the pressure welding piece presses the rule against the rule guide to stop and fix the rule, and when the pressure on the pressure welding piece is released by swinging of the locking part, the pressure welding piece presses the rule against the rule guide. Due to the elastic force of the rod, the pressure contact piece retreats and separates from the rule surface, allowing the rule to move.

〓Example〓 Next, an example of the tape measure of the present invention will be explained with reference to the drawings.
Reference numeral 1 denotes a case body, and a rule 4 is drawn into the case 1 by a spring 3 wound around a shaft 2 at the center of the case, the rule 4 is wound around the outer circumference of the spring, and the end of the rule 4 is inserted through the outlet 5 into the case body. 1
Pull it out to the outside. Guide pieces 6 and 7 are provided facing each other inside the outlet 5, and a pressure contact piece 8 is slidably held between them. It is desirable that the pressure contact piece 8 is provided so as to be perpendicular to the rule 4 near the outlet 5.

When viewed from the side, the press-welding piece 8 consists of an elastic flat plate having an approximately tongue-like shape and has legs 9 protruding from both ends of the lower part. It is desirable that the curves have substantially matching arcuate shapes. The tips of the support rods 10 extending to the left and right of the tongue-shaped pressure contact piece 8 are fitted into support slits 11 provided on the inner surface of the case body 1, and the pressure contact piece 8 is held between the guide pieces 6 and 7. has been done. A seesaw type push button 12 whose center portion is pivoted to the case body 1 is provided above the pressure contact piece 8. At the lower end of the seesaw push button 12, there is an L-shaped locking part 13.
protrudes and its lower surface is used as a cam surface, and a first cam surface 14 is formed at the tip end thereof, and the locking portion 13
The peripheral edge between the side edge 15 of the seesaw push button 12 and the first cam surface 14 forms a second cam surface 16. The distance between the first cam surface 14 and the fulcrum 17 of the seesaw push button 12 is greater than the distance between the second cam surface 16 and the fulcrum 17 of the seesaw push button 12; The contact point and fulcrum 17 with the pressure contact piece 8, and the second cam surface 16 and the pressure contact piece 8
The contact point and the fulcrum 17 are both located on the same straight line.

Reference numeral 18 denotes an upper stopper for controlling the swinging of the seesaw type push button 12, and the side edge portion 15 of the locking portion 13
forms the lower stopper. 19 is a rule guide provided at the lower edge of the drawer opening 5, and 20 is a screw hole for fixing the lid 21 to the case body 1.

Now, when you want to pull out the rule 4 from the case body 1, press the lower part of the seesaw type push button 12 toward the case body, and the first cam surface 14 of the locking part 13 of the seesaw type push button 12 will come into pressure contact. Since the pressure contact piece 8 comes off the top of the piece 8 and moves to the second cam surface 16 and the pressing force is released, the pressure contact piece 8, which had been deformed into an arched shape due to the pressing force, is Due to its elasticity, the supporting rod 10 becomes flat as shown in FIG. 2, and the pressure contact piece 8 rises along the guide pieces 6 and 7, and the end surface of the leg 9 separates from the rule 4, and the pressure contact piece 8 rises along the guide pieces 6 and 7.
can be freely withdrawn. And if you want to fix rule 4 at a predetermined length,
When the upper end of the seesaw type push button 12 is pushed back toward the case body and the locking part 13 is rotated clockwise in the opposite direction to the previous time, as shown in FIG. 3, the second cam surface 1
The top of the pressure contact piece 8, which was located on the first cam surface 14, moves onto the first cam surface 14 and is pressed by the cam surface, so the pressure contact piece 8 curves its support rod 10 into an arcuate shape. The pressure contact piece 8 is pushed down and protrudes toward the rule guide 18, and the leg 9 end of the pressure contact piece 8 presses the rule 4 against the rule guide 18, and the upper edge of the square portion of the tongue-shaped pressure contact piece 8 presses the rule 4 against the rule guide 18. Both shoulders 22 are deformed into a bulging state as shown in FIG. 3, and their elastic force presses the rule 4, so the rule 4 stops moving and is fixed on the rule guide 18. It is.

〓Effects of the invention〓 As described in detail above, the tape measure of the present invention has an elastic body inside the drawer opening of the case that pulls out the rules wound and stored in the case so as to intersect with the rules. A tongue-shaped pressure welding piece is slidably provided, and the ends of the supporting rods that protrude to the left and right of the pressure welding piece are fitted into support slits in the case body, and a seesaw-like center is provided above the outlet. A push button is provided with an L-shaped locking portion at the lower end of the push button, the lower surface of the locking portion of the push button is a cam surface, and the cam surface has a first cam surface and a locking portion. A second cam surface is provided, and the distance between the first cam surface and the fulcrum of the seesaw push button is larger than the distance between the second cam surface and the fulcrum of the seesaw push button, and the cam surface and the pressure contact When the tops of the pieces touch and the lower end of the push button is pushed into the case, the pressure contact piece releases the pressure contact with the rule, and when the top end of the push button is pushed into the case, the support rod of the pressure contact piece releases the pressure contact with the rule. The first cam surface of the locking part is configured to press the pressure welding piece and the rule by deforming it, so by pressing the seesaw type push button and swinging the locking part, the first cam surface of the locking part can press the tongue. When the top of the pressure welding piece is pressed and the pressure welding piece moves forward against the elastic force of the support rod of the pressure welding piece, the pressure welding piece presses the rule against the rule guide to stop and fix the rule, and, When the locking part swings to move the top part to the second cam surface and release the pressure on the pressure contact piece, the pressure contact piece retreats due to the elastic force of the support rod and separates from the rule surface, preventing the rule from moving. This makes it possible to draw out the rules from inside the case and store the rules inside the case. There is no need for a complicated structure such as providing a spring support piece on the pressure contact piece and interposing a spring between the two, and by making the pressure contact piece have a specific shape such as a tongue shape, the pressure contact piece Because the rule is stopped, fixed, pulled out of the case, and stored in the case using only the elastic deformation of This has made it easier to use and has greatly contributed to improving productivity and saving labor.

[Brief explanation of the drawing]

Fig. 1 is a front view of the tape measure of the present invention with the case cover removed, Fig. 2 is a side sectional view taken along the line of Fig. 1, showing a state in which the pressure welding piece is separated from the rule, and Fig. 3 is a side view of the same. It is a sectional view showing a state in which the pressure contact piece presses the rule. 1... Case body, 4... Rule, 8... Pressing piece, 10... Support rod, 12... Seesaw type push button, 1
3...Locking part, 19...Rule guide, 21...
lid.

Claims (1)

[Scope of utility model registration request] A case has a drawer opening for pulling out the rules wound and stored in the case, and a tongue-shaped pressure welding piece made of an elastic material is slidably disposed in the drawer opening of the case so as to intersect with the rule, and the pressure welding piece is The tips of the support rods extending left and right are fitted into support slits in the case body, and above the drawer opening there is provided a push button whose central part is pivoted in a seesaw style, and at the lower end of the push button is an L.
A locking portion protruding in the shape of a letter is provided, the lower surface of the locking portion of the push button is a cam surface, the cam surface is provided with a first cam surface and a second cam surface, and the first cam surface and the seesaw type are provided. The cam surface has a distance from the fulcrum of the push button that is larger than the distance between the second cam surface and the fulcrum of the seesaw type push button,
When the cam surface and the top of the pressure contact piece are in contact with each other, and the lower end of the push button is pushed into the case, the pressure contact piece releases the pressure contact with the rule, and when the upper end of the push button is pushed into the case, the pressure contact piece releases the pressure contact with the rule. A tape measure in which the support rod of the pressure welding piece is deformed so that the pressure welding piece and the rule are brought into pressure contact.